CN208989415U

CN208989415U - Folding and self-locking structure and folding and self-locking frame and fully collapsible invalid's chair

Info

Publication number: CN208989415U
Application number: CN201820055768.2U
Authority: CN
Inventors: 张颂扬; 杨帆
Original assignee: Health Health Management (shenzhen) Co Ltd
Current assignee: Zhang Na
Priority date: 2017-08-18
Filing date: 2018-01-12
Publication date: 2019-06-18
Anticipated expiration: 2028-01-12
Also published as: CN108078697B; CN108078697A

Abstract

The utility model discloses a kind of folding and self-locking structures and folding and self-locking frame and fully collapsible invalid's chair, wherein the folding and self-locking structure includes a bottom plate；One latch assembly, the latch assembly and the bottom plate generate axis rotation, and the latch assembly includes a bolt sliding block；An and locked component, the locked component and the bottom plate generate axis rotation, the locked component includes a prevention end, wherein, the locked component and the latch assembly relative position are removable, in a folded configuration, the fixed latch assembly of the locked component, and the reducible movement of both the locked component and the latch assembly, enable the folding and self-locking structure from unfolded state to folded state during complete self-locking operation.

Description

Folding and self-locking structure and folding and self-locking frame and fully collapsible invalid's chair

Technical field

The utility model relates to machinery fields, more particularly, to a kind of folding and self-locking structure and folding and self-locking frame and folding Folded wheelchair.

Background technique

Foldable structure is very universal application in machinery field, and the application of foldable structure can save when idle The space occupied of time, and do not influence use state.Therefore, foldable structure is all applied in many fields.One of application neck Domain is in medical instruments field, and by taking wheelchair as an example, more fully collapsible invalid's chair is to be simply completed folding, and roll over currently on the market Volume after folded is larger.

It can lead to the problem of during use following:

The first, when folding, some structures be it is exposed outside, actually again without completely folding.Such as Relatively common in wheelchair is foot pedal, arm-rest frame and backing cushion, these things are required to protectively store.

The second, the wheelchair crowd that perhaps other frame structures use is the not convenient patient or disabled person of legs and feet, here Safety need higher protection.Common practice be by a locked instrument, and by the locked instrument further Lock the wheelchair or other frame structures.Therefore, the safety of locked instrument is just very important, and existing wheelchair is filled in locking The safety for setting itself needs to be promoted, and existing locked instrument is required to operator's manual locking.

The device of third, existing foldable structure, the structure and step folded up are complex, for the user, After folding, it is also necessary to lock the foldable structure, therefore be more troublesome.

Such as the medical health apparatus such as wheelchair, safety be it is extremely important, when fold open after, it is necessary first to be exactly Stability and safety are kept, but some users may forget to lock, in this way, the safety of entire wheelchair is difficult to protect Card.

Utility model content

One of the utility model is designed to provide a kind of folding and self-locking structure and folding and self-locking frame and folding wheel Chair, it is advantageous that, the folded frame of the folding and self-locking mechanism can lock automatically after the folding that is completed, and not need artificial Intervene, reduces operating process.

One of the utility model is designed to provide a kind of folding and self-locking structure and folding and self-locking frame and folding wheel Chair, during folding, the basic structure of the fully collapsible invalid's chair can be folded and be opened simultaneously, and be opened to maximum opening angle In the case where degree, which cannot continue to open backwards, be only capable of folding forward, pass through the folding and self-locking structure, the folding Wheelchair folding facing forward is locked.

One of the utility model is designed to provide a kind of folding and self-locking structure and folding and self-locking frame and folding wheel Chair, during opening and using, even if the folding and self-locking structure is opened suddenly, foldable integral frame will not be folded, It ensure that the safety of the folded frame.

One of the utility model is designed to provide a kind of folding and self-locking structure and folding and self-locking frame and folding wheel Chair, the folded frame are further locked by the folding and self-locking structure.

One of the utility model is designed to provide a kind of folding and self-locking structure and folding and self-locking frame and folding wheel Chair, wherein the folding and self-locking structure passes through the mutual cooperation of the locked component and the latch assembly, completes fixed and automatic The effect of locking.

One of the utility model is designed to provide a kind of folding and self-locking structure and folding and self-locking frame and folding wheel Chair, wherein the bottom plate is movably coupled to the locked component, when the latch assembly is mutual by the guiding groove and the bottom plate In chimeric process, the locked component allow the latch assembly enter the bottom plate, when the latch assembly by the guiding groove with After the bottom plate is mutually fitted into, which prevents the latch assembly from being separated from each other by the guiding groove and the bottom plate.

One of the utility model is designed to provide a kind of folding and self-locking structure and folding and self-locking frame and folding wheel Chair, wherein the bottom plate is movably coupled to the latch assembly, and during the latch assembly is around bottom plate movement, this is inserted Pin assemblies are fitted into and are separated by the guiding groove.

One of the utility model is designed to provide a kind of folding and self-locking structure and folding and self-locking frame and folding wheel Chair, wherein the advantage of the folding and self-locking structure is, after the latch assembly and the mutually chimeric bottom plate, the locked component is certainly The latch assembly is locked dynamicly, so that the latch assembly and the bottom plate keep stablizing.

One of the utility model is designed to provide a kind of folding and self-locking structure and folding and self-locking frame and folding wheel Chair, wherein the folding and self-locking structure is used in a folded frame so that two folding stands of the folded frame be folded when It waits, it is locked by the folding and self-locking structure.

One of the utility model is designed to provide a kind of folding and self-locking structure and folding and self-locking frame and folding wheel Chair, wherein the folded frame has one first folding stand and one second folding stand, and wherein first folding stand includes a bolt group Part, second folding stand include a bottom plate and a locked component, are mutually folded when first folding stand with second folding stand In the process, the latch assembly and the bottom plate and the locked component complete function that is mutually chimeric and locking.

One of the utility model is designed to provide a kind of folding and self-locking structure and folding and self-locking frame and folding wheel Chair, wherein the fully collapsible invalid's chair includes a use of revenue to finance expense frame, a wheel support and one by arm support and a folding and self-locking structure, passes through the branch The folding and opening of frame and the back bracket, complete the folding and self-locking of the fully collapsible invalid's chair.

One of the utility model is designed to provide a kind of folding and self-locking structure and folding and self-locking frame and folding wheel Chair, wherein the fully collapsible invalid's chair includes a use of revenue to finance expense frame, a wheel support and one by arm support and a folding and self-locking structure, passes through the wheel The folding and opening of bracket and the back bracket, complete the folding and self-locking of the fully collapsible invalid's chair.

According to the one aspect of the utility model, the utility model provides a folding and self-locking structure, comprising:

One bottom plate；

One latch assembly, the latch assembly and the bottom plate generate axis rotation, and the latch assembly includes a bolt Sliding block；And

One locked component, the locked component and the bottom plate generate axis rotation, and the locked component includes a prevention End, wherein the locked component and the latch assembly relative position are removable, in a folded configuration, the locked component The fixed latch assembly, and the reducible movement of both the locked component and the latch assembly, so that the folding Self-locking structure can from unfolded state to folded state during complete self-locking operation.

One of embodiment according to the present utility model, wherein the bolt sliding block around the bottom plate axis rotation simultaneously A rotary motion trace is formed, the locked component and the bottom plate can reset ground axis rotation, and the prevention end is initial with one Position is simultaneously arranged in the rotary motion trace,

In auto-lock process, the bolt sliding block drives the prevention end to leave the initial position, and then described slotting Pin sliding block is continued to move to along the rotary motion trace, in the case where the bolt sliding block crosses the prevention end, the resistance Not-go-end head is reset to the initial position, and the bolt sliding block is prevented to return, meanwhile, the prevention end prevents the bolt Sliding block moves on, and then completes self-locking.

One of embodiment according to the present utility model, the bottom plate axis rotation and formed a rotary motion trace, institute The movement of ground axle center can be resetted by stating bolt sliding block and the bottom plate, and the bolt sliding block has an initial position and is arranged on described In rotary motion trace,

In auto-lock process, the prevention end drives the bolt sliding block to leave the initial position, and then the resistance Not-go-end head is continued to move to along the rotary motion trace, described to insert in the case where the bolt sliding block is crossed in the prevention end Pin sliding block is reset to the initial position, and completes self-locking.

One of embodiment according to the present utility model, the bottom plate have a guiding groove, the rotary motion trace Part is overlapped with the guiding groove, and one end of the locked component prevents one end of the latch assembly from sliding into the guiding cunning Slot, in the case where applying a motive force, one end of the latch assembly compresses one end of the locked component, the locking group Part is moved so that the latch assembly is able to continue to slide into the guiding groove, and the locked component resets and prevents described insert Pin assemblies are returned from the guiding groove, and then are completed self-locking.

One of embodiment according to the present utility model, the bottom plate have a first side and a second side, Described in latch assembly be arranged on the first side of the bottom plate, wherein the locked component is arranged on the bottom plate The second side, one end of the latch assembly has a bolt sliding block, and the bolt sliding block prolongs from the first side Extend to the second side.

One of embodiment according to the present utility model, wherein the folding and self-locking structure also has at least two limits End, wherein the positive stop end is arranged on the bottom plate, the positive stop end limits the moving range of the locked component and formation One stop zone, the guiding groove has an opening and a channel, wherein the channel is located in the stop zone, so that The prevention end can be moved at the channel of the guiding groove.

The bolt sliding block of one of embodiment according to the present utility model, the latch assembly is driven by a motive force It moves to be slid into from the opening of the guiding groove, the bolt shoe contact simultaneously compresses the prevention end, so that institute It states and end is prevented to be moved to that the bolt sliding block is allowed to go successively to the guiding groove.

There is a guiding face and one to prevent face, institute for one of embodiment according to the present utility model, the prevention end It states bolt shoe contact and compresses the guiding face for preventing end, the guiding face guides the bolt sliding block, so that While the prevention end is moved, the bolt sliding block passes through the guiding face.

One of embodiment according to the present utility model, the prevention end also have a separation side, the prevention face The two sides for separating side are in the guiding face, and the direction of the prevention face and the guiding face forms one jiao Degree, so that the bolt sliding block is by the way that behind the separation side, it is described that the prevention end allows the bolt sliding block to go successively to Guiding groove.

One of embodiment according to the present utility model, in the stop zone, the locked component is formed one time Multiple power, the restoring force reset ground and pull the prevention end, and in the stop zone, the prevention end is reset to initially Position, the prevention face for preventing end prevent the bolt sliding block from returning.

One of embodiment according to the present utility model, the bottom plate have a first connecting portion, the latch assembly The other end have a second connecting portion, wherein the first connecting portion is mutually spirally connected with the second connecting portion, and described Latch assembly is collapsibly rotated around the bottom plate；Wherein the bottom plate also has one the 4th interconnecting piece, the locked component The other end have a third interconnecting piece, the third interconnecting piece and the 4th interconnecting piece are mutually spirally connected, and the locking Component is collapsibly rotated around the bottom plate.

One of embodiment according to the present utility model, the folding and self-locking structure also has an elastic element, described One end of elastic element is connected to the locked component, and one end of the elastic element is connected to the bottom plate, and then forms institute Restoring force is stated, to drive the locked component to reset.

One of embodiment according to the present utility model, the locked component also have a driving lever, the driving lever driving Ground controls the prevention end, in the stop zone, controls the movement for preventing end by the driving lever.

One aspect according to the present utility model, the utility model provide a folding and self-locking frame, comprising:

One first folding stand；

One second folding stand, first folding stand and second folding stand collapsibly rotate；And

One folding and self-locking structure, wherein the folding and self-locking structure includes:

One bottom plate, the bottom plate are arranged on first folding stand；

One latch assembly, the latch assembly are arranged on second folding stand, the latch assembly and the bottom plate Axis rotation, the latch assembly include a bolt sliding block, and the bolt sliding block is around the bottom plate axis rotation and forms one Rotary motion trace；And

One locked component, the locked component and the bottom plate can reset ground axis rotation, and the locked component includes one End is prevented, the prevention end has an initial position and is arranged in the rotary motion trace,

Wherein, first folding stand and second folding stand generate movement folded against, so that the bolt sliding block Receive a motive force, so that the bolt sliding block compresses the prevention end along the direction of advance of the rotary motion trace and drives The initial position is left in the prevention end, and the bolt sliding block is allowed for continue to move to along the rotary motion trace, In the case that the bolt sliding block crosses the prevention end, the prevention end is reset to the initial position, and prevents institute The direction of advance that bolt sliding block is stated against the rotary motion trace returns, and the prevention end prevents the bolt sliding block from continuing Advance along the rotary motion trace, and then completes self-locking.

One of embodiment according to the present utility model, in first folding stand and second folding stand from folding In the case where opening, the motive force is provided.

One of embodiment according to the present utility model, the bottom plate have a guiding groove, the rotary motion trace Part is overlapped with the guiding groove, and one end of the locked component prevents one end of the latch assembly from sliding into the guiding cunning Slot, in the case where applying the motive force, one end of the latch assembly compresses one end of the locked component, the locking Component is moved so that the latch assembly is able to continue to slide into the guiding groove, and the locked component is resetted and prevented described Latch assembly is returned from the guiding groove, and then is completed self-locking.

One aspect according to the present utility model, the utility model further provide a fully collapsible invalid's chair, comprising:

One main body frame, the main body frame include a braced frame and a back bracket, and the braced frame is around institute It states back bracket collapsibly to rotate, wherein the braced frame includes a use of revenue to finance expense frame and a wheel support, the use of revenue to finance expense frame and institute Wheel support is stated to be connected in linkage, when so that the use of revenue to finance expense frame being rotated around the back bracket, the wheel support simultaneously around Back bracket rotation, the braced frame and the back bracket there is a maximum open angle；

One mobile devices, the mobile devices include multiple wheels, and the wheel is arranged on the wheel support to drive State fully collapsible invalid's chair rotation；And

One folding and self-locking structure, the folding and self-locking structure are arranged on the main body frame, wherein described fold certainly Lock construction includes:

One bottom plate, the bottom plate are arranged in the braced frame；

One latch assembly, the latch assembly and the bottom plate axis rotation, the latch assembly include a bolt sliding block, The bolt sliding block is around the bottom plate axis rotation and forms a rotary motion trace；And

One locked component, the locked component are arranged in the back bracket, the locked component and the bottom plate Ground axis rotation can be resetted, the locked component includes a prevention end, and the prevention end has an initial position and set It sets in the rotary motion trace,

Wherein, the braced frame of the main body frame and the back bracket generate movement folded against, so that described insert It sells sliding block and receives a motive force, so that the bolt sliding block compresses the prevention end along the direction of advance of the rotary motion trace And the prevention end is driven to leave the initial position, allow for the bolt sliding block to continue to move along the rotary motion trace Dynamic, in the case where the bolt sliding block crosses the prevention end, and the braced frame and the back bracket reach The maximum open angle, the prevention end is reset to the initial position, and prevents the bolt sliding block against described turn Before the direction of advance of dynamic rail mark returns, and the prevention end prevents the bolt sliding block from continuing on the rotary motion trace Advance into direction, and then completes self-locking when the fully collapsible invalid's chair is opened to maximum open angle.

One of embodiment according to the present utility model, the bottom plate are arranged on the use of revenue to finance expense frame.

One of embodiment according to the present utility model, the bottom plate are arranged on the wheel support.

One of embodiment according to the present utility model, the fully collapsible invalid's chair further include a control handle, wherein described Control handle is arranged on the main body frame, and the control handle controllably connects the driving lever.

One of embodiment according to the present utility model, the mobile devices further include a power device, the power The device electrical connection wheel is to drive the wheel to rotate and then drive the fully collapsible invalid's chair.

One of embodiment according to the present utility model, the fully collapsible invalid's chair further include a foot support and a head bracket, Wherein the foot support is collapsibly arranged on the wheel support, and the head bracket is collapsibly arranged on the backrest Bracket.

One of embodiment according to the present utility model, the fully collapsible invalid's chair further include an armrest support, the handrail Bracket is collapsibly arranged in the braced frame.

Detailed description of the invention

Figure 1A-C indicates the entirety and operation chart of one embodiment of the folding and self-locking structure.

Fig. 2A-D indicates the entirety and operation chart and decomposition diagram of one embodiment of the folding and self-locking structure.

Fig. 3 A-C indicates the auto-lock process schematic diagram of the folded frame 1.

Fig. 4 A-C indicates the auto-lock process schematic diagram of the folded frame 2.

Fig. 5 A-D indicates the operation chart of the another embodiment of the folding and self-locking structure.

Fig. 6 indicates the positive overall schematic of the fully collapsible invalid's chair 3.

Fig. 7 indicates the back side overall schematic of the fully collapsible invalid's chair 3.

Fig. 8 A-E indicates the process schematic of the fully collapsible invalid's chair 3 from opening state to folded state.

Fig. 9 A-E indicates the process schematic of the fully collapsible invalid's chair 3 from folded state to opening state.

Figure 10 indicates the enlarged schematic partial view of the fully collapsible invalid's chair 3.

Figure 11 indicates the structural schematic diagram of the control handle 134 of the fully collapsible invalid's chair 3.

Specific embodiment

It is described below for disclosing the utility model so that those skilled in the art can be realized the utility model.It retouches below Preferred embodiment in stating is only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.It is retouched following The basic principle of the utility model defined in stating can be applied to other embodiments, deformation scheme, improvement project, etc. Tongfangs The other technologies scheme of case and the spirit and scope without departing from the utility model.

It will be understood by those skilled in the art that in the exposure of the utility model, term " longitudinal direction ", " transverse direction ", "upper", The orientation or position of the instructions such as "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, and It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore Above-mentioned term should not be understood as limiting the present invention.

It is understood that term " one " is interpreted as " at least one " or " one or more ", i.e., in one embodiment, The quantity of one element can be one, and in a further embodiment, the quantity of the element can be it is multiple, term " one " is no It can be interpreted as the limitation to quantity.

As shown in figs. 1 a-c, the utility model provide a folding and self-locking structure 10 first embodiment, wherein the folding from The advantage of lock construction 10 is after the completion of folding, while being automatically completed locking.Specifically, which includes One bottom plate 11, a latch assembly 12 and a locked component 13, the bottom plate 11 and the latch assembly 12 are detachably connected, the bottom plate 11 is detachably connected with the locked component 13.Wherein the bottom plate 11 moves in a coupled condition with the latch assembly 12, The bottom plate 11 moves in connected state with the locked component 13.

In another variant embodiment, which connect with being integrally formed with one end of the latch assembly 12, should Latch assembly 12 is collapsibly rotated around the bottom plate 11.One end of the bottom plate 11 and the locked component 13 is integrally formed ground even It connects, which collapsibly rotates around the bottom plate 11.

Preferably, which has an a first side M1 and second side M2, and wherein the latch assembly 12 is set In the first side M1 of the bottom plate 11, which is arranged on the second side M2 of the bottom plate 11.

The latch assembly 12 around the bottom plate 11 rotate during, formed a rotary motion trace, specifically, the latch assembly It is a circular arc that 12 one end, which is formed by the rotary motion trace,.The locked component 13 can reset ground axis rotation around the bottom plate 11, Wherein one end of the locked component 13 is by axis connection on the bottom plate 11, and the locked component 13 has an initial position, when In the case that the locked component 13 is pushed by a motive force and leaves the initial position, the locked component 13 is simultaneously by one time Multiple power makes it be restored to the initial position.

The locked component 13 be should be noted that always by a restoring force, so that the locked component 13 is in no external force In the case where driving, it is always positioned at the initial position, and in the case that the extraneous motive force is greater than the restoring force, the locking Component 13 is pushed and makees axis rotation around the bottom plate 11, and when the motive force is less than the case where restoring force even disappears Under, which is responded to the initial position.

In the present embodiment, which includes a bolt sliding block 122, and the bolt sliding block 122 is along the rotation rail Mark advances, and the direction advanced is the rotary motion trace.At this point, the part of the locked component 13 in the initial position is located at In the rotation direction of the rotary motion trace, that is to say, that when the latch assembly 12 rotation, the bolt of the latch assembly 12 Sliding block 122 can wherein contacting with each other with the locked component 13 in the rotary motion trace.

Specifically, which includes a prevention end 132, which is located at turning for the rotary motion trace On dynamic direction, in the case where the latch assembly 12 and the locked component 13 contact, the bolt sliding block 122 and the prevention end 132 contact with each other.At this point, the prevention end 132 is in the initial position, and prevent the bolt sliding block 122 along this turn Dynamic rail mark continues to move to, and when the motive force is greater than the restoring force, which continues on rotary motion trace rotation, and And the locked component 13 is pushed to leave the initial position, while the initial position is left in the prevention end 132.Until the prevention end First 132 are pushed and are left the rotary motion trace, which crosses the prevention end 132 and continue to move to.In other words, The prevention end 132 leaves the initial position and the bolt sliding block 122 is allowed to continue to move to, at this point, the bolt sliding block 122 is got over It crosses after the prevention end 132, the motive force which is subject to weakens up to disappearing, in this process, the resistance Pulling of the not-go-end head 132 by the restoring force, and then return back to the initial position.

After the prevention end 132 comes back to the initial position, which be can continue to along the rotation rail Mark moves forward, but the prevention end 132 prevents the bolt sliding block 122 to return along the rotary motion trace.

It is understood that there is a guiding face 1321 and one to prevent face 1322 for the prevention end 132, wherein the bolt is sliding Block 122 is rotated along the rotary motion trace and is contacted with the guiding face 1321 of the prevention end 132 of the locked component 13, at this In the case that bolt sliding block 122 moves on, the prevention end 132 and the bolt sliding block 122 generate relative displacement.The prevention end First 132 push and leave the initial position by a motive force, which moves on the guiding face 1321.The guiding Face 1321 forms a guiding face direction, which is intended to the direction of advance of the rotary motion trace.Therefore, when the bolt is sliding Block 122 cross the prevention end 132 namely by the guiding face 1321 when, which is pushed and to leave this first Beginning position, and the bolt sliding block 122 passes through the guiding face 1321.

Separate it should be noted that separating side 1133 by one among the guiding face 1321 and the prevention face 1322, the resistance Only face 1322 forms one and prevents face direction, which is intended to the direction of advance of the rotary motion trace.Therefore work as the bolt After sliding block 122 crosses the guiding face 1321 entrance prevention face 1322 along the direction of advance of the rotary motion trace, the prevention face 1322 prevent the bolt sliding block 122 from returning along the inverse direction of advance of the rotary motion trace.

The direction of advance of the so-called rotary motion trace in above-described embodiment refers to the bolt sliding block 122 towards the locking group Part 13 is rotated along the rotary motion trace.It is to be appreciated that the rotary motion trace in the present embodiment is virtual track, it is convenient for table It states and sets.

The utility model provides another variant embodiment of the above-mentioned folding and self-locking structure 10, wherein the bottom plate 11 It is in unfolded state with the latch assembly 12, in the unfolded state, the bottom plate 11 and one end of the latch assembly 12 are mutual Connection, the latch assembly 12 can be rotated around with one end of the bottom plate 11.

The bottom plate 11 is movably coupled to the latch assembly 12, and wherein the bottom plate 11 has a first connecting portion 111, right Ying Di, the latch assembly 12 have a second connecting portion 121, and wherein the first connecting portion 111 and the second connecting portion 121 can It is movably attached.

It is so-called in the present embodiment to be movably coupled to, refer to and fixes the bottom plate 11 and the bolt group in one direction Part 12, allow in the other directions the latch assembly 12 around the bottom plate 11 rotate, and the latch assembly around this first Interconnecting piece 111 and the second connecting portion 121 are axis rotation.

Specifically, which is mutually spirally connected with the latch assembly 12, wherein the first connecting portion 121 tool of the bottom plate 11 There is one first mounting hole A1, accordingly, the second connecting portion 121 of the latch assembly 12 has one second mounting hole A2, this Two interconnecting pieces 121 provide an attachment screw 1211, by the attachment screw 1211 through the first mounting hole A1 and second peace Hole A is filled, and makes the bottom plate 11 and the latch assembly 12 in removable, the quilt on perpendicular to in-plane along in-plane It is fixed.

It is completed it is understood that the bottom plate 11 such as can also connect by axis with the latch assembly 12, is hinged at the modes, so that The latch assembly is axis rotation around the first connecting portion 111 and the second connecting portion 121.

For ease of description, direction defined in the utility model, reference frame refer to, to be parallel to the bottom plate 11 in-plane be X axis, perpendicular to 11 in-plane of bottom plate be Y-axis, coordinate origin on the bottom plate 11, and And in 11 plane of bottom plate vertically with X axis be Z axis to.Therefore, which is in the X-Z plane, does not consider this The influence of 11 thickness of bottom plate.Therefore, the above-mentioned latch assembly 12 rotates on the first side M1 of the bottom plate 11, that is to say, that On X-Z plane.

In the present embodiment, which includes a bolt sliding block 122, and the bolt sliding block 122 is from the first side M1 extends to second side M2, that is, the bolt sliding block 122 towards Z axis to a predetermined altitude.The latch assembly 12 In the case where 11 axis rotation of bottom plate, the bolt sliding block 122 have a scheduled rotary motion trace, the rotary motion trace with should Bottom plate 11 forms a contact area.That is, the bolt sliding block 122 is around 11 axis rotation of bottom plate, when the bolt is sliding Block 122 can continue to rotate after contacting with the bottom plate 11.

As shown in fig. 2 a-d, further, which also has a guiding groove 112, which is opened It is located at the edge of the bottom plate and extends inward.The latch assembly 12 also has a bolt sliding block 122,122 court of bolt sliding block To perpendicular to the base plate plane direction direction i.e. Y-axis direction extend to form one protrusion.

Accordingly, which can accordingly slide in the guiding groove 112.That is, the guiding is sliding This of slot 112 and relative distance of the first mounting hole A1 on the bottom plate 11, above-mentioned relative distance and the latch assembly 12 are inserted It sells sliding block 122 and the relative distance of second mounting hole A2 is comparable.

In this way, when the latch assembly 12 is when the first side M1 of the bottom plate 11 is rotated, so that the bolt sliding block 122 are inserted into the guiding groove 112.Specifically, which has an opening 1121 and a channel 1122.

Obtained by above-mentioned, as shown in fig. 2 a-d, in the first embodiment of the utility model, the latch assembly 12 around 11 axis rotation of bottom plate, from unfolded state to folded state.

So-called unfolded state in the present embodiment refers to the bolt sliding block 122 and the bottom plate 11 of the latch assembly 12 Separation.

So-called folded state in the present embodiment refers to that the bolt sliding block 122 of the latch assembly 12 connects with the plate 11 Touching.

In the variant embodiment of the first embodiment of the utility model, the latch assembly 12 is around the bottom plate 11 When the first mounting hole A1 is rotated, in unfolded state to folded state, the bolt sliding block 122 of the latch assembly 12 Enter the channel 1122 by the opening 1121 of the guiding groove 112, so that the latch assembly 12 and the bottom plate 11 are overlapped, subtracts The area of its in-plane is lacked.The trend in the channel 1122 and the bolt sliding block 122 first are connect around this of the bottom plate 11 Track caused by portion 111 is related.

It is understood that the opening 1121 of the guiding groove 112 can be with being set greater than the bolt sliding block 122 Width, suitable for the slide-in of the bolt sliding block 122, and the channel 1122 can change its angle according to the angle of folding.

From the point of view of the direction perpendicular to 11 in-plane of bottom plate, the height of projection of the bolt sliding block 122 has one to subscribe Highly, which is greater than the thickness of the bottom plate 11.Therefore, which exceeds the bottom plate 11 in a folded configuration Part, pass through 13 mutually locking of locked component.

Folded state in above-mentioned variant embodiments refers to that the bolt sliding block 122 of the latch assembly 12 slides into the bottom plate In the channel 1122 of 11 guiding groove 112.

Unfolded state in above-mentioned variant embodiments refers to the bolt sliding block 122 and the bottom plate of the latch assembly 12 11 guiding groove 112 is separated from each other.

The bottom plate 11 is removable with the locked component 13 and can connect with resetting, and wherein the locked component 13 is around this Bottom plate 11 rotatably rotates and in unlocked state, and wherein the locked component 13 has a third interconnecting piece 131, corresponding Ground, the bottom plate 11 also have one the 4th interconnecting piece 113, and the third interconnecting piece 131 and the 4th interconnecting piece 113 are connected with each other, make It is removable in the in-plane of the second side M2 along the bottom plate 11 i.e. X-Z plane direction to obtain the locked component 13, And the locked component 13 around the third interconnecting piece 131 and the 4th interconnecting piece 113 the bottom plate 11 second side M2 Rotation.

The locked component 13 also has one to prevent end 132, which has a guiding face 1321 and a resistance Only face 1322, as seen in figs. 2a-2b, during the bottom plate 11 and the latch assembly 12 are mutually chimeric, which leads to The opening 1121 for crossing the guiding groove 112 of the bottom plate 11 enters the channel 1122, and the position of the prevention end 132 is located at should At the channel 1122 of guiding groove 112.

It is noted that the locked component 13 and the bottom plate 11 have a predetermined position, so that the prevention end 132 is hung down Directly in the in-plane i.e. Y-axis of the bottom plate 11, it is preferably at 112 top of guiding groove, and be in the bolt Sliding block 122 passes through at the channel 1122 of the guiding groove 112.

So-called unlocked state in the present embodiment refers to the bolt sliding block 122 not yet by the prevention end 132 It is locked.

In the first embodiment of the utility model, which passes through the process that the locked component 13 is locked It is elucidated with.It is formed by the rotary motion trace in the bolt sliding block 122 around the bottom plate 11 rotation, the resistance of the locked component 13 Not-go-end head 132 has an initial position, which is arranged in the rotary motion trace.

That is, the prevention end 132 of the locked component 13 prevents the bolt sliding block 122 on the initial position Continue to move along the rotary motion trace.In this process, if it is desired to continue to move to, the bolt sliding block 122 is for the prevention end First 132 need to apply a motive force F.Under the promotion of motive force F, the bolt sliding block 122 is along the prevention end 132 The guiding face 1321 and the prevention end 132 generate opposite movement, and the guiding direction of the guiding face 1321 is led from this Draw face 1321 to the prevention face 1322.

Preferably, which is an arcwall face, and the setting of the arcwall face tends to so that the bolt sliding block 122 begins The prevention face 1322 is slided into from the guiding face 1321 eventually.

It is understood that moving direction of the bolt sliding block 122 in the guiding groove 112 only can be along the rotation Track, and under the promotion of above-mentioned motive force F, if static for object of reference with the bottom plate 11, which can only court To the rotary motion trace direction.As a result, in above process, which generates certain displacement.

Certain displacement of the prevention end 132 is rotatably to be realized by the locked component 13 around the bottom plate 11. In order to further complete self-locking function, which also has an elastic parts 14, the elastic parts 14 packet An elastic element 141 and at least one positive stop end 142 are included, wherein one end of the elastic element 141 is interconnected with 11 phase of bottom plate It connects, the other end of the elastic element 141 and the locked component 13 are connected with each other, and the positive stop end 142 is arranged on the bottom plate On 11, the one or more positive stop end 142 limits the locked component 13 and forms a stop zone 1420, so that should Stop zone 1420 limits moving range of the locked component 13 on the bottom plate 11.

Preferably, which in the effect of setting be when the prevention end 132 of the locked component 13 When generating certain displacement, the starting point and ending point of the displacement is limited.That is, when the prevention end 132 is in Under the position of the starting point of the stop zone 1420, at this point, the bolt sliding block 122 contacts the guiding face of the prevention end 132 1321。

It is understood that the prevention end 132 is always positioned at an initial position with or without the bolt sliding block 122, The so-called initial position of the utility model refers to that the prevention end 132 is in the starting point of the stop zone 1420.

The displacement of the above-mentioned prevention end 132 is limited by the stop zone 1420, when the bolt sliding block 122 contact should It prevents the guiding face 1321 of end 132 and generates certain displacement along the guiding direction of the guiding face 1321.

Also there is a separation side 1323 in the guiding face 1321 of the prevention end 132 and the centre in the prevention face 1322, In the two sides on the separation side 1323, the direction in the guiding face 1321 and the prevention face 1322 forms an angle of intersection, and The bolt sliding block 122 on the guiding face 1321 when relatively moving, motive force F of the bolt sliding block 122 to the prevention end 132 Always pressure is so that the bolt sliding block 122 compresses the prevention end.

When the bolt sliding block 122 passes through the separation side 1323 from the guiding face 1321 to the prevention face 1322, the bolt is sliding Block 122 is formed by ' locked ' zone 1320 into the prevention face 1322, while the bolt sliding block 122 is to the prevention end 132 Motive force F weakens until disappearing.

It is understood that the guiding face 1321 is arranged on the outside of the prevention end 132,1322 quilt of the prevention face The inside of the prevention end 132 is set.As shown in Figure 3B, the bolt sliding block 122 the guiding face 1321 relative movement away from From the moving distance for being less than the locked component 13 that the stop zone 1420 is limited.

In the variant embodiments of above-mentioned first embodiment, which is locked by the locked component 13 Process is elucidated with, when the bolt sliding block 122 passes through the guiding groove 112, and the guiding face 1321 with the prevention end 132 It is in contact.

It should be noted that encountering the prevention end when the bolt sliding block 122 into the guiding groove 112 when moving 132 prevention, and continue mobile towards the direction inside the guiding groove 112.The prevention end of the locked component 13 132 prevent the bolt sliding block 122 from continuing to move along the guiding groove 112.In this process, if it is desired to it continues to move to, it should Bolt sliding block 122 needs to apply a motive force F for the prevention end 132.Under the promotion of motive force F, the bolt is sliding Block 122 along the guiding face 1321 and prevention end 132 of the prevention end 132 generate it is opposite move, and the guiding The guiding direction in face 1321 is from the guiding face 1321 to the prevention face 1322.

It is understood that moving direction of the bolt sliding block 122 in the guiding groove 112 only can be along the guiding Sliding slot 132, and under the promotion of above-mentioned motive force F, if static for object of reference with the bottom plate 11, the bolt sliding block 122 It can be towards the direction of the guiding groove 132.As a result, in above process, which generates certain displacement.

The mutual alignment and movement relation and above-mentioned first embodiment of the bolt sliding block 122 and the prevention end 132 at this time This mutual alignment is identical as movement relation.

To sum up, during the bolt sliding block 122 passes through and is fitted to the guiding groove 112, the prevention is being touched Behind end 132, due to the presence of motive force F, which persistently presses to the prevention end 132, so that the resistance Not-go-end head 132 and the bolt sliding block 122 generate certain relative displacement.At this point, the bolt sliding block 122 constantly passes through and is fitted into To the guiding groove 112.

It should be noted that since the locked component 13 and the bottom plate 11 are by the elastic element 141 interconnection, so that The locked component 13 in the process of moving, answers power H once always, in the prevention end 132 and the bolt sliding block 122 Push-pull effort F is fought during being mutually shifted.

The motive force F that the bolt sliding block 122 is generated by, into the prevention face 1322, being in contact behind the separation side 1323 Weaken and even disappears, meanwhile, restoring force H pulls the prevention end 132 of the locked component 13 to be returned to initial position, Position exactly before the bolt sliding block 122 and the prevention end 132 contact with each other, so prevent the bolt sliding block 122 to It is mobile at the opening 1121 of the guiding groove 112.At this point, complete the prevention end 132 lock the bolt sliding block 122 from Lock function.

The so-called lock state of the present embodiment refers to that the bolt sliding block 122 enters in the guiding groove 112, and the resistance Not-go-end head 132 is located at the rear side of the bolt sliding block 122, and the bolt sliding block 122 is prevented to return from the guiding groove 112.

It is understood that in the case that the bolt sliding block 122 is by entering the prevention face 1322 behind the separation side 1323, The bolt sliding block 122 reaches terminal in the guiding groove 112, and entire folding and self-locking structure reaches fixed and self-locking at this time.? It is possible that the bolt sliding block 122 can also move in the guiding groove 112, at this point, the folding and self-locking structure 10 reaches certainly Lock, but the latch assembly 12 can still be relatively moved with the bottom plate 11.

The so-called self-locking function of the present embodiment, refers to, enters the bottom plate 11 in the bolt sliding block 122 of the latch assembly 12 The guiding groove 112 during, do not need the operation bidirectional locked component 13 the prevention end 132 can be completed for The locking of the bolt sliding block 122, the promotion for only needing that the bolt sliding block 122 is pushed to enter the guiding groove 112 during this Power F is greater than restoring force H.

As shown in Figure 1A-C and 2A-D, which is elucidated with from opening state is locked state to.Wherein should Locked component 13 also has a driving lever 133, after completing the locking process such as Fig. 3 B, if operator wants the bolt sliding block 122 separate from the guiding groove 112, by stirring the driving lever 133 so that prevention face 1322 of the prevention end 132 with The bolt sliding block 122 separation, allows for the bolt sliding block 122 free to slide in the guiding groove 112.

As shown in figures 3 a-c, the utility model further provides a folded frame 1, which includes one first Folding stand 101, one second folding stand 102 and a folding and self-locking structure 10, wherein first folding stand 101 and second folding stand 102 one end is connected with each other and second folding stand 102 can be rotated around first folding stand 101.

Further, which is provided with the bottom plate 11 of the folding and self-locking structure 10, sets in the bottom plate 11 Be equipped with the locked component 13, which is provided with the difference latch assembly 12 of the folding and self-locking structure so that this One folding stand 101 and second folding stand 102 drivingly complete the folding and self-locking structure 10 during be opened to folding Self-locking function.

It should be noted that first folding stand 101 and second folding stand 102 are in the open state, the latch assembly The 12 bolt sliding block 122 is separated from each other with the guiding groove 112 of the bottom plate 11.First folding stand 101 and second folding Superimposed 102 is in folded state, which enters the guiding groove 112, and passes through the resistance of the locked component 13 Not-go-end head 132 is completed chimeric and is locked.

Specifically, wherein the folding and self-locking structure 10 includes a bottom plate 11, which is arranged on first folding stand On 101, which has a guiding groove 112；One latch assembly 12, the latch assembly 12 are arranged on second folding On frame 102, one end of the latch assembly 12 is adapted to slide into the guiding groove 112, the other end of the latch assembly 12 and the bottom plate 11 connect and collapsibly rotate around the bottom plate 11；And a locked component 13, the locked component 12 and the bottom plate 11 can It folding and can rotate with resetting, one end of the locked component 13 prevents one end of the latch assembly 12 from sliding into the guiding groove 112, In the case where applying a motive force F, first folding stand 101 and second folding stand 102 are from folded state to opening state Process, which drives one end of the latch assembly 12 to compress one end of the locked component 13, the locked component 13 are moved so that the latch assembly 12 is able to continue to slide into the guiding groove 112, which resets and this is prevented to insert 112 return from the guiding groove of pin assemblies 12, and then complete self-locking.

As illustrated in figs. 4 a-c, the utility model further provides a folded frame 2, which includes a third Folding stand 201, one the 4th folding stand 202 and a folding and self-locking structure 10, wherein the third folding stand 201 is provided with the folding certainly The bottom plate 11 of lock construction 10 and the locked component 13 being arranged on the bottom plate 11 are provided with this on the 4th folding stand 202 Latch assembly 12 of folding and self-locking structure 10, so that the third folding stand 201 and the 4th folding stand 202 are opened from folding into During, drivingly complete the self-locking function of the folding and self-locking structure 10.

It should be noted that the third folding stand 201 and the 4th folding stand 202 are in folded state, the latch assembly The 12 bolt sliding block 122 is separated from each other with the guiding groove 112 of the bottom plate 11.The third folding stand 201 and the four fold Superimposed 202 is in the open state, which enters the guiding groove 112, and passes through the resistance of the locked component 13 Not-go-end head 132 is completed chimeric and is locked.

The so-called opening state of the present embodiment, refers to full open position.So-called folded state refers to and folds completely State.

As illustrated in figs. 4 a-c, wherein the folding and self-locking structure 10 includes a bottom plate 11, which is arranged on the third On folding stand 201, which has a guiding groove 112；One latch assembly 12, the latch assembly 12 are arranged on the 4th On folding stand 202, one end of the latch assembly 12 is adapted to slide into the guiding groove 112, the other end of the latch assembly 12 with should Bottom plate 11 is connected and is collapsibly rotated around the bottom plate 11；And a locked component 13, the locked component 12 and the bottom plate 11 is foldable and can rotate with resetting, and one end of the locked component 13 prevents one end of the latch assembly 12 from sliding into the guiding groove 112, in the case where applying a motive force F, the third folding stand 201 and the 4th folding stand 202 are from opening state to folding One end of the process of state, the third folding stand 201 drive latch assembly 12 compresses one end of the locked component 13, the lock Determine component 13 and be moved so that the latch assembly 12 is able to continue to slide into the guiding groove 112, which resets and hinder The only latch assembly 12 112 return from the guiding groove, and then complete self-locking.

It is noted that the self-locking operation in above-described embodiment is by 122 active exposure of bolt sliding block and to compress Prevention end 132, wherein force side is the bolt sliding block 122, that is to say, that motive force F pushes the bolt sliding block 122 to produce Raw movement, and moved by the bolt sliding block 122 along the rotary motion trace, and then the bolt sliding block 122 is pushed and is somebody's turn to do The prevention end 132 of locked component 13, and self-locking operation is completed in the two Soviet Union's bolt sliding block 122 and the prevention end 132.

As shown in figures 5 a-d, the another embodiment of the self-locking operation is illustrated in figure, wherein force side is the prevention End 132, that is to say, that motive force F pushes the prevention end 132 to generate movement, and the prevention end 132 and the bolt Opposite movement is generated between sliding block 122, wherein the bolt sliding block 122 can be with resetting mobile, and the prevention end 132 is along one Rotary motion trace is moved, and in moving process, which passes through the guiding face 1321 of the prevention end 132 simultaneously Into the prevention face 1322, and then complete self-locking.Also, as shown in figures 5 a-d, the bolt sliding block 122 in the process of moving, It can be reset to initial position, and then completed in folding process self-locking.

As shown in fig. 6-7, the utility model further provides the fully collapsible invalid's chair using the folding and self-locking structure 10, wherein The fully collapsible invalid's chair 3 includes a main body frame 31 and a mobile devices 32, which connect with the mobile devices 32, so that The mobile devices 32 drive the main body frame 31 mobile.The main body frame 31 includes a braced frame 311 and a back bracket 312, which is foldably connected the back bracket 312, which includes a use of revenue to finance expense frame 3111 and one Wheel support 3112, one end of the use of revenue to finance expense frame 3111 is arranged on the back bracket 312, and the use of revenue to finance expense frame 3111 is around the backrest Bracket 312 collapsibly rotates, which includes that at least four-wheel 321, the wheel support 3112 can with the back bracket 312 It foldedly connects, which is separately positioned on the quadrangle of the wheel support 3112, convenient for keeping balancing and driving the fully collapsible invalid's chair 3 is mobile.

Details enlarged drawing as shown in Figure 10, the fully collapsible invalid's chair 3 shown in figure also have a folding and self-locking structure 10, In the folding and self-locking structure 10, including a bottom plate 11, the bottom plate 11 be arranged on the use of revenue to finance expense frame 3111, which has one Guiding groove 112；One latch assembly 12, the latch assembly 12 are arranged in the back bracket 312, and the one of the latch assembly 12 End is adapted to slide into the guiding groove 112, and the other end of the latch assembly 12 connect with the bottom plate 11 and can around the bottom plate 11 Foldedly rotate；And a locked component 13, the locked component 13 is foldable with the bottom plate 11 and can rotate with resetting, the locking One end of component 13 prevents one end of the latch assembly 12 from sliding into the guiding groove 112, in the case where applying a motive force F, From folded state to opening state, one end of the latch assembly 12 compresses the locking for the use of revenue to finance expense frame 311 and the back bracket 312 One end of component 13, the locked component 13 are moved so that the latch assembly 12 is able to continue to slide into the guiding groove 112, the lock Determine component 13 to reset and the latch assembly is prevented to return from the guiding groove 112, and then completes self-locking.The present embodiment is so-called Opening state refers to that the use of revenue to finance expense frame 311 and the back bracket 312 are in and opens and be crossed to form an open angle.

The so-called folded state of the present embodiment refers to that the use of revenue to finance expense frame 3111 and the back bracket 312 are in and folds, opens Angle is intended to zero.

As shown in Fig. 8 A-E, wherein Fig. 8 A-E indicates process signal of the fully collapsible invalid's chair 3 from opening state to folded state Figure.As shown in Fig. 9 A-E, wherein Fig. 9 A-E indicates the process schematic of the fully collapsible invalid's chair 3 from opening state to folded state.

Specifically, the use of revenue to finance expense frame 311 and the back bracket 312 form a maximum open angle A, the wheel support 3112 with The back bracket 312 forms a maximum open angle B, and it is simultaneously to go out that maximum open angle A, which corresponds to maximum open angle B, It is existing.That is, keep the back bracket 312 static, while opening the use of revenue to finance expense frame 311 to maximum open angle A, the wheel Bracket 3112 is passively opened to maximum open angle B.

It should be noted that the use of revenue to finance expense frame 311 and the back bracket 312 be after opening to maximum open angle A, the seat Bracket 311 and the back bracket 312 are stationary state.Preferably, which is an angle for being suitable for human body sitting posture Degree, can be between 90 ° -180 °.That is, in these cases, user takes the fully collapsible invalid's chair 3, the back of user Against the back bracket 312, even at this point, the self-locking function of the folding and self-locking structure 10, the fully collapsible invalid's chair 3 are not protected still Hold fixation.

And the folding and self-locking structure 10 is arranged in the use of revenue to finance expense frame 311 and the backrest branch in the fully collapsible invalid's chair 3 of the utility model In the case that frame 312 forms maximum open angle A, the bolt sliding block 122 and the prevention end 132 generate relative displacement, and The separation side 1323 is moved on the guiding face 1321, due to the decrease of motive force F, restoring force H drives the prevention end First 132 reset, and then the bolt sliding block 122 is prevented to skid off from the guiding groove 112, complete the folding and self-locking structure 10 oneself Lock.

It is beaten it is understood that being slightly less than the maximum in the open angle that the use of revenue to finance expense frame 311 and the back bracket 312 are formed In the case where opening angle A, be arranged in the use of revenue to finance expense frame 311 the bottom plate 11 and the locked component 13 and be arranged in the back bracket 312 latch assembly 12 can also complete the self-locking of the folding and self-locking structure 10.

In the above-described embodiments, the junction of the use of revenue to finance expense frame 311 and the back bracket 312 passes through the folding and self-locking structure 10 Complete the function of folding and self-locking.

It should be noted that the folding and self-locking structure 10 prevents other people or contactant to compress the back bracket 312 Towards the direction folded, to destroy the opening of the fully collapsible invalid's chair 3.

But at this point, the unlock of the folding and self-locking structure 10 passes through stirring for the driving lever 133 of the locked component 13, in turn Control being mutually shifted and unlocking for the prevention end 132 and the bolt sliding block 122.

Specifically, in the above-described embodiments, which needs stirring by operator, and keeps the driving lever 133 The movement of the prevention end 132 is driven, then on the other hand, operator's another hand, which controls the bolt sliding block 122 and skids off this, leads Draw sliding slot 112.That is, needing the operation of operator's both hands simultaneously during controlling the folding and self-locking structure 10.

In another embodiment, as shown in figure 11, which also has a control handle 134, wherein should Control handle 134 is arranged in the back bracket 312, and the control handle 134 controllably connects the driving lever 133, behaviour Author can drive movement and the unlock of the driving lever 133 by the control handle 134.There are one advantages for the control handle 134 It is, operator is capable of after the operation of the singlehanded completion control handle 134 and unlock, the back bracket 312 is pushed directly on, and And complete the operation folded.

It is noted that the use of revenue to finance expense frame 311 is connect with the wheel support 3112 by an at least linkage support 33 in linkage, So that the use of revenue to finance expense frame 311 and the wheel support 3112 are simultaneously rotated around the back bracket 312.

Further, which is additionally provided with a driving device 322, which is drivingly connected this Wheel 321, so that the wheel 321 rotates and drives the fully collapsible invalid's chair 3.

Specifically, which is provided with the bottom plate 11 of the folding and self-locking structure 10 and is arranged in the bottom plate 11 The locked component 13, which is provided with the latch assembly 12 of the folding and self-locking structure 10.When user's driving should In the case that use of revenue to finance expense frame 311 is folded to the back bracket 312, the bolt of the latch assembly 12 of the use of revenue to finance expense frame 311 is set The opening of sliding block 122 towards the guiding groove 112 of the bottom plate 11 that the back bracket 312 is arranged in slides into.

And the motive force F applied in user pushes the bolt sliding block 122 to compress the resistance of the locked component 13 Not-go-end head 132, since the prevention end 132 by the pulling of restoring force H and is intended to be returned to initial state simultaneously.Therefore Motive force F is greater than restoring force H, which continues to move towards inside the guiding groove 112, while driving should The movement of the prevention end 132 of locked component 13.

It is understood that in the present embodiment, the bottom plate 11 and the locked component 13 can also be arranged on the use of revenue to finance expense On frame 3111, which is arranged in the back bracket 312.

It is understood that in another embodiment, the bottom plate 11 and the locked component 13 can also be arranged on this On wheel support 3112, which is arranged in the back bracket 312.

It is understood that in another embodiment, which can also be arranged on the use of revenue to finance expense frame 3111, The bottom plate 11 and the locked component 13 are arranged on the back bracket 312.

It is understood that in another embodiment, which can also be arranged on the wheel support 3112, The bottom plate 11 and the locked component 13 are arranged on the back bracket 312.

It should be understood by those skilled in the art that foregoing description and the embodiments of the present invention shown in the drawings are only used as It illustrates and is not intended to limit the utility model.The purpose of this utility model completely and effectively realizes.The function of the utility model Can and structural principle in embodiment show and illustrate, under without departing from the principle, the embodiments of the present invention can To have any deformation or modification.

Claims

1. a folding and self-locking structure characterized by comprising

One bottom plate；

One latch assembly, the latch assembly and the bottom plate generate axis rotation, and the latch assembly includes a bolt sliding block； And

One locked component, the locked component and the bottom plate generate axis rotation, and the locked component includes a prevention end, Wherein, the locked component and the latch assembly relative position are removable, in a folded configuration, the fixed institute of the locked component Latch assembly, and the reducible movement of both the locked component and the latch assembly are stated, so that the folding and self-locking knot Structure can from unfolded state to folded state during complete self-locking operation.

2. folding and self-locking structure according to claim 1, which is characterized in that wherein the bolt sliding block is around the bottom plate Axis rotation simultaneously forms a rotary motion trace, and the locked component and the bottom plate can reset ground axis rotation, the prevention end With an initial position and it is arranged in the rotary motion trace,

In auto-lock process, the bolt sliding block drives the prevention end to leave the initial position, and then the bolt is sliding Block is continued to move to along the rotary motion trace, in the case where the bolt sliding block crosses the prevention end, the prevention end Head is reset to the initial position, and the bolt sliding block is prevented to return, meanwhile, the prevention end prevents the bolt sliding block It moves on, and then completes self-locking.

3. folding and self-locking structure according to claim 1, which is characterized in that wherein the prevention end is around the bottom plate Axis rotation simultaneously forms a rotary motion trace, and the bolt sliding block and the bottom plate can reset the movement of ground axle center, the bolt sliding block With an initial position and it is arranged in the rotary motion trace,

In auto-lock process, the prevention end drives the bolt sliding block to leave the initial position, and then the prevention end Head is continued to move to along the rotary motion trace, and in the case where the bolt sliding block is crossed in the prevention end, the bolt is sliding Block reset is completed self-locking to the initial position.

4. folding and self-locking structure according to claim 2, which is characterized in that the bottom plate has a guiding groove, described The part of rotary motion trace is overlapped with the guiding groove, and one end of the locked component prevents one end of the latch assembly from sliding into The guiding groove, in the case where applying a motive force, one end of the latch assembly compresses one end of the locked component, The locked component is moved so that the latch assembly is able to continue to slide into the guiding groove, and the locked component resets simultaneously It prevents the latch assembly from returning from the guiding groove, and then completes self-locking.

5. folding and self-locking structure according to claim 4, which is characterized in that the bottom plate has a first side and one the Two side faces, wherein the latch assembly is arranged on the first side of the bottom plate, wherein the locked component is set In the second side of the bottom plate, one end of the latch assembly has a bolt sliding block, and the bolt sliding block is from described First side extends to the second side.

6. folding and self-locking structure according to claim 5, which is characterized in that wherein the folding and self-locking structure also have to Few two positive stop ends, wherein the positive stop end is arranged on the bottom plate, the positive stop end limits the movement of the locked component Range simultaneously forms a stop zone, and the guiding groove has an opening and a channel, wherein the channel is located at the limit In region, so that the prevention end can be moved at the channel of the guiding groove.

7. folding and self-locking structure according to claim 6, which is characterized in that the bolt sliding block quilt of the latch assembly One pushes power drive to slide into from the opening of the guiding groove, and the bolt shoe contact simultaneously compresses the prevention end Head, so that the prevention end is moved to that the bolt sliding block is allowed to go successively to the guiding groove.

8. folding and self-locking structure according to claim 7, which is characterized in that the prevention end has a guiding face and one Prevention face, the bolt shoe contact simultaneously compress the guiding face for preventing end, and the guiding face guides the bolt Sliding block, while so that the prevention end is moved, the bolt sliding block passes through the guiding face.

9. folding and self-locking structure according to claim 8, which is characterized in that the prevention end also has a separation side, The prevention face and the guiding face are in the two sides for separating side, and the direction side in the prevention face and the guiding face It is at an angle to shape so that the bolt sliding block is by behind the separations side, the prevention end permission bolt sliding block after It is continuous to enter the guiding groove.

10. folding and self-locking structure according to claim 9, which is characterized in that in the stop zone, the locking group Part forms a restoring force, and the restoring force resets ground and pulls the prevention end, in the stop zone, the prevention end It is reset to initial position, the prevention face for preventing end prevents the bolt sliding block from returning.

11. folding and self-locking structure according to claim 1, which is characterized in that the bottom plate has a first connecting portion, institute The other end for stating latch assembly has a second connecting portion, wherein the first connecting portion and the mutual spiral shell of the second connecting portion It connects, and the latch assembly is collapsibly rotated around the bottom plate；Wherein the bottom plate also has one the 4th interconnecting piece, institute The other end for stating locked component has a third interconnecting piece, and the third interconnecting piece and the 4th interconnecting piece are mutually spirally connected, and And the locked component is collapsibly rotated around the bottom plate.

12. folding and self-locking structure according to claim 1, which is characterized in that the folding and self-locking structure also has a bullet Property element, one end of the elastic element are connected to the locked component, and one end of the elastic element is connected to the bottom plate, And then a restoring force is formed, to drive the locked component to reset.

13. folding and self-locking structure according to claim 12, which is characterized in that the folding and self-locking structure also has at least One positive stop end, the positive stop end limit the locked component and form a stop zone, and the locked component also has one group Bar, the driving lever drivingly controls the prevention end, in the stop zone, controls the prevention end by the driving lever The movement of head.

14. a folding and self-locking frame characterized by comprising

One first folding stand；

One bottom plate, the bottom plate are arranged on first folding stand；

One latch assembly, the latch assembly are arranged on second folding stand, the latch assembly and the bottom plate axle center Rotation, the latch assembly include a bolt sliding block, and the bolt sliding block is around the bottom plate axis rotation and forms a rotation Track；And

One locked component, the locked component and the bottom plate can reset ground axis rotation, and the locked component includes a prevention End, the prevention end have an initial position and are arranged in the rotary motion trace,

Wherein, first folding stand and second folding stand generate movement folded against, so that the bolt sliding block receives One motive force, so that the bolt sliding block compresses described in the prevention end and drive along the direction of advance of the rotary motion trace It prevents end from leaving the initial position, allows for the bolt sliding block to continue to move to along the rotary motion trace, described In the case that bolt sliding block crosses the prevention end, the prevention end is reset to the initial position, and prevents described insert The direction of advance for selling sliding block against the rotary motion trace returns, and the prevention end prevents the bolt sliding block from continuing on The rotary motion trace is advanced, and then is completed self-locking.

15. folding and self-locking frame according to claim 14, which is characterized in that in first folding stand and described second Folding stand provides the motive force in the case where fold into opening.

16. folding and self-locking frame according to claim 15, which is characterized in that the bottom plate has a guiding groove, institute The part for stating rotary motion trace is overlapped with the guiding groove, and one end of the locked component prevents one end of the latch assembly sliding Enter the guiding groove, in the case where applying the motive force, one end of the latch assembly compresses the locked component One end, the locked component are moved so that the latch assembly is able to continue to slide into the guiding groove, the locked component It resets and the latch assembly is prevented to return from the guiding groove, and then complete self-locking.

17. a fully collapsible invalid's chair characterized by comprising

One main body frame, the main body frame include a braced frame and a back bracket, and the braced frame is leaned on around described Back braces collapsibly rotate, wherein the braced frame includes a use of revenue to finance expense frame and a wheel support, the use of revenue to finance expense frame and the wheel Bracket is connected in linkage, and when so that the use of revenue to finance expense frame being rotated around the back bracket, the wheel support is simultaneously around institute Back bracket rotation is stated, the braced frame and the back bracket have a maximum open angle；

One mobile devices, the mobile devices include multiple wheels, and the wheel is arranged on the wheel support to drive the folding Folded wheelchair rotation；And

One folding and self-locking structure, the folding and self-locking structure are arranged on the main body frame, wherein the folding and self-locking knot Structure includes:

One bottom plate, the bottom plate are arranged in the braced frame；

One latch assembly, the latch assembly and the bottom plate axis rotation, the latch assembly includes a bolt sliding block, described Bolt sliding block is around the bottom plate axis rotation and forms a rotary motion trace；And

One locked component, the locked component are arranged in the back bracket, and the locked component can be answered with the bottom plate Position ground axis rotation, the locked component include a prevention end, and the prevention end has an initial position and is arranged on In the rotary motion trace,

Wherein, the braced frame of the main body frame and the back bracket generate movement folded against, so that the bolt is sliding Block receives a motive force, so that the bolt sliding block compresses the prevention end and band along the direction of advance of the rotary motion trace It moves the prevention end and leaves the initial position, the bolt sliding block is allowed for continue to move to along the rotary motion trace, In the case where the bolt sliding block crosses the prevention end, and the braced frame and the back bracket reach described Maximum open angle, the prevention end is reset to the initial position, and prevents the bolt sliding block against the rotation rail The direction of advance of mark returns, and the advance side for preventing end that the bolt sliding block is prevented to continue on the rotary motion trace It marches forward, and then completes self-locking when the fully collapsible invalid's chair is opened to maximum open angle.

18. fully collapsible invalid's chair according to claim 17, which is characterized in that the bottom plate is arranged on the use of revenue to finance expense frame.

19. fully collapsible invalid's chair according to claim 17, which is characterized in that the bottom plate is arranged on the wheel support.

20. fully collapsible invalid's chair according to claim 17, which is characterized in that the bottom plate have a guiding groove, described turn The part of dynamic rail mark is overlapped with the guiding groove, and one end of the locked component prevents one end of the latch assembly from sliding into institute Guiding groove is stated, in the case where applying the motive force, one end of the latch assembly compresses one end of the locked component, The locked component is moved so that the latch assembly is able to continue to slide into the guiding groove, and the locked component resets simultaneously It prevents the latch assembly from returning from the guiding groove, and then completes self-locking.

21. fully collapsible invalid's chair according to claim 20, which is characterized in that the folding and self-locking structure also has at least one Positive stop end, the positive stop end limit the locked component and form a stop zone, and the locked component also has a driving lever, institute It states driving lever and drivingly controls the prevention end, in the stop zone, the prevention end is controlled by the driving lever It is mobile.

22. fully collapsible invalid's chair according to claim 21, which is characterized in that the fully collapsible invalid's chair further includes a control handle, Wherein the control handle is arranged on the main body frame, and the control handle controllably connects the driving lever.

23. any fully collapsible invalid's chair of 7-22 according to claim 1, which is characterized in that the mobile devices further include one dynamic Power device, the power device electrical connection wheel is to drive the wheel to rotate and then drive the fully collapsible invalid's chair.

24. fully collapsible invalid's chair according to claim 23, which is characterized in that the fully collapsible invalid's chair further includes a foot support and one Head bracket, wherein the foot support is collapsibly arranged on the wheel support, the head bracket is collapsibly arranged on The back bracket.

25. fully collapsible invalid's chair according to claim 24, which is characterized in that the fully collapsible invalid's chair further includes an armrest support, The armrest support is collapsibly arranged in the braced frame.