CN106473496B - Chair adjusting tray and chair with same - Google Patents

Abstract

The invention relates to the technical field of chairs, in particular to a chair adjusting tray and a chair with the same. The adjusting tray comprises a first connecting part and a second connecting part, wherein the first connecting part is used for being connected with the bottom of the chair seat, the second connecting part is used for being connected with the upper end of the lifting rod of the chair, the first connecting part is hinged with the second connecting part through a hinge shaft, and a positioning mechanism is arranged between the first connecting part and the second connecting part; the second connecting part is provided with a lifting rod mounting hole for sleeving the upper end of the lifting rod of the chair, the inner side of the lifting rod mounting hole is provided with a spanner block, and one end of the spanner block is driven by the pulling of a second traction wire to drive the other end of the spanner block to touch a lifting switch at the upper end of the lifting rod of the chair; the wrench block has a fulcrum between the one end and the other end, and is configured to be rotatable about the fulcrum. The chair comprises the adjusting tray. The invention has simple structure and is convenient to manufacture and use.

Description

Chair adjusting tray and chair with same

Technical Field

The invention relates to the technical field of chairs, in particular to a chair adjusting tray and a chair with the same.

Background

Existing chairs such as office chairs generally consist of a chair seat and a chair base, wherein a lifting rod is usually arranged at the chair base, an adjusting mechanism such as a supporting plate is usually arranged between the lifting rod and the bottom of the chair seat, and the adjusting mechanism is mainly used for realizing any one or all functions of seat height adjustment and seat tilting adjustment. When the height adjusting function is needed, the height adjusting function is usually realized by touching a lifting switch at the upper end of a lifting rod; when the seat reclining function is required, it is usually achieved by adjusting the included angle formed by two independent connecting blocks in the adjusting mechanism.

In the prior art, the above functions (height adjustment and/or tilt adjustment) are usually implemented by using a lever, and the lever is relatively large, so that the lever is limited by the structure of the chair, and the overall appearance of the chair is greatly affected after the lever is arranged, and the cost of the lever is relatively high. Although the functions (height adjustment and/or tilt adjustment) are also implemented in the form of a pull switch in the prior art, the conventional pull switch is not perfect in structural design, and thus causes great inconvenience to users.

Disclosure of Invention

In order to overcome the defects of complex structure, inconvenient use and the like of an adjusting mechanism in the prior art, the invention provides a chair adjusting tray.

The chair adjusting tray comprises a first connecting part and a second connecting part, wherein the first connecting part is used for being connected with the bottom of a chair seat, the second connecting part is used for being connected with the upper end of a chair lifting rod, the first connecting part is hinged with the second connecting part through a hinge shaft, and a positioning mechanism is arranged between the first connecting part and the second connecting part;

the positioning mechanism comprises a positioning pin shaft arranged at the second connecting part and a positioning pin hole arranged at the first connecting part and used for the positioning pin shaft to extend into, and the positioning pin shaft keeps a tendency of contracting inwards towards the second connecting part through an elastic piece so as to be separated from the positioning pin hole;

the positioning pin shaft is matched with a lever mechanism, and one end of the lever mechanism is driven by the pull of a first traction wire to drive the other end of the lever mechanism to overcome the elastic force provided by the elastic piece so as to apply force to the positioning pin shaft;

the second connecting part is provided with a lifting rod mounting hole for sleeving the upper end of the lifting rod of the chair, the inner side of the lifting rod mounting hole is provided with a spanner block, and one end of the spanner block is driven by the pulling of a second traction wire to drive the other end of the spanner block to touch a lifting switch at the upper end of the lifting rod of the chair; the wrench block has a fulcrum between the one end and the other end, and is configured to be rotatable about the fulcrum.

In the chair adjusting tray, the first connecting part and the second connecting part are hinged, and when the positioning pin shaft is inserted into the positioning pin hole, the chair seat can keep a fixed angle; when the positioning pin shaft is separated from the positioning pin hole, the chair seat can rock back and forth, so that the chair seat can be well adapted to the sitting posture of a user and can be tilted independently. Of course, the positioning pin holes can be arranged in a plurality of ways, so that the chair seat can preferably keep a plurality of angles. In addition, the spanner block can trigger the lifting switch at the upper end of the lifting rod of the chair under the pulling of the second traction wire, so that the lifting adjustment of the chair seat can be better realized.

In the chair adjusting tray, as the positioning mechanism is controlled by the first traction wire and the spanner block is controlled by the second traction wire, compared with the control mode of the control lever in the prior art, the related mechanism has smaller volume and higher freedom degree of setting positions.

On the other hand, in the stay wire control form existing in the prior art, the positioning pin shaft is mostly pulled directly through a rope; the positioning pin is limited by functions, so that the design range of the positioning pin in the space position is relatively small, namely the positioning pin is generally arranged on the side surface of the tray, and in order to ensure that the rope can be pulled by the positioning pin well, the part of the rope in the tray is required to be parallel to the axis of the positioning pin, so that the optional position range of the rope (the first traction wire) entering and exiting the tray is small, and the position selection of the tail end of the rope (the first traction wire) is greatly influenced. In the invention, the rope (the first traction wire) can drive the positioning pin shaft through the lever mechanism due to the lever mechanism, and a larger design space exists in the specific structure of the lever mechanism, so that a larger choice exists in the arrangement space of the relevant position of the rope (the first traction wire). And through adjusting the proportion of 2 arm of force of lever mechanism, also can be better make first traction wire can be comparatively laborsaving drive the locating pin axle through lever mechanism.

Similarly, in the existing pull wire control mode, the rope (the second traction wire) is mostly pulled directly by the contact block (the spanner block) to trigger the lifting switch, so that the setting position of the rope (the second traction wire) is greatly limited. According to the invention, the second traction wire can be well adapted by bending the wrench block into different angles, namely, the setting position of the second traction wire is free. In addition, through adjusting the position of spanner piece fulcrum, can be better make the second traction wire can be comparatively laborsaving touch the lifting switch through spanner piece.

Preferably, the wrench block is arranged at the second connecting part through a hinge shaft or a connecting shaft, and the joint of the hinge shaft or the connecting shaft and the second connecting part or the joint of the hinge shaft or the connecting shaft and the wrench block forms a fulcrum. Thereby enabling the wrench block to be better arranged at the inner side of the second connecting part.

Preferably, the wrench block is provided with a sleeve for being sleeved on the connecting shaft.

Preferably, the wrench block comprises a wrench block main body, wherein the wrench block main body is provided with a first plate and a second plate which form an included angle with each other, a second wire passing hole matched with the second traction wire is formed in the first plate, and a touch block capable of installing a lifting switch at the upper end of the lifting rod of the Kong Chudong chair through the lifting rod is formed in the second plate. The second wire through hole is arranged to enable the second traction wire to be connected with the first plate better, and the touch block is arranged to enable the second plate to touch the lifting switch better.

Preferably, the second traction wire is arranged at the second wire passing hole through a connecting terminal, the end part of the second traction wire is at least provided with a first baffle body capable of penetrating through the second wire passing hole, and the connecting terminal is at least provided with a baffle ring body capable of clamping the first baffle body outside the second wire passing hole. Through the cooperation of binding post and first fender block for the second traction wire can be comparatively simple and convenient, firm setting in second wire hole department.

Preferably, the second traction wire is driven by a second wrench, the second wrench comprises a second wrench seat and a second pulling part, and the second wrench seat and the second pulling part are coaxially and rotatably connected through a second wrench pin; the second spanner seat is provided with a second rotating cavity with two open ends, the second spanner part is provided with a second movable column matched with the second rotating cavity, and the second traction wire penetrates through the side wall of the second rotating cavity and then is connected with the second movable column. Thereby the control of the second traction wire can be better realized.

Preferably, the inner wall of the second rotating cavity is provided with a first limiting protrusion and a second limiting protrusion, and the second movable column is provided with a third limiting protrusion which is interfered with the first limiting protrusion and the second limiting protrusion during rotation at a position between the first limiting protrusion and the second limiting protrusion. Through the cooperation of the first spacing protruding, the spacing protruding of second and the spacing protruding of third for the second spanner portion can only rotate in certain stroke range, thereby can effectually avoid the damage such as parts such as second traction wire, second spanner that lead to because of the maloperation.

Preferably, the second traction wire is provided with a clamping block at one end connected with the second movable column, a clamping block groove for placing the clamping block is formed at the second movable column, a threading hole for the second traction wire to pass through is formed at the side wall of the second rotating cavity, and an installation channel is formed between the inner wall of the threading hole and the end face of one end of the second rotating cavity. Through the cooperation in joint piece and joint piece groove for the second traction wire can be better set up in second movable column department. The setting of mounting channel for the second haulage line can be convenient locate in the through wires hole.

Preferably, a second traction wire sleeve is further arranged on the outer side of the second traction wire, and two ends of the second traction wire sleeve are respectively connected with the second connecting portion and the second spanner seat. The second traction wire sleeve is arranged, so that the second traction wire can be protected better.

Preferably, an elastic mechanism is further arranged between the first connecting portion and the second connecting portion, the elastic mechanism comprises an elastic unit, the strain of the elastic unit and the distance between the first connecting portion and the second connecting portion corresponding to the elastic mechanism are in linear relation, and the initial strain of the elastic unit is adjustable. Due to the arrangement of the elastic mechanism, when the positioning pin shaft is separated from the positioning pin hole, the chair seat can be well adapted to the sitting posture of a user to automatically tilt.

Preferably, the first traction wire is driven by a first wrench, and the first wrench is provided with at least one station capable of keeping the other end of the lever mechanism to press the positioning pin shaft into the positioning pin hole. So that the seat can be preferably held at a fixed angle by the first wrench.

Preferably, the first wrench comprises a first wrench seat and a first wrench part, and the first wrench seat and the first wrench part are coaxially and rotatably connected through a first wrench pin; the first pulling part comprises a first movable column, a first pulling block is arranged on the side wall of the first movable column along the radial direction, a first rotating cavity for accommodating the first movable column is formed in the first wrench seat, and the first rotating cavity is at least provided with a travel port for freely pulling the first pulling block in the circumferential direction; a first travel channel is formed in the side wall of the first movable column, and a baffle with elastic deformation characteristics, which arches towards the outer side of the first movable column, is arranged in the first travel channel; a positioning stop block is constructed at the position of the inner wall of the first rotating cavity corresponding to the first travel channel, and the positioning stop block is interfered with the stop piece. The arrangement of the travel port enables the first pulling part to rotate within a certain travel range, so that damage to components such as the first traction wire and the first wrench caused by misoperation can be effectively avoided. Through the cooperation between location dog and separation blade for the multiple rotation position of maintenance that first spanner portion can be better.

Preferably, the first wrench seat is provided with a first wire passing port for the first traction wire to pass through, and the first movable column is provided with a first wire connecting slot for fixing the end part of the first traction wire.

Preferably, the end portion of the first traction wire, which is matched with the first wiring groove, is provided with a second blocking body, the first wiring groove comprises a first fixing hole for placing the second blocking body and a winding groove which extends along the circumferential direction of the first movable column and is communicated with the first fixing hole, and at least a penetrating hole for the second blocking body to penetrate through is formed at the first wire passing opening. Through the cooperation of first fixed orifices and second fender block for first traction wire can be better locate first activity post department.

Preferably, the lever mechanism comprises a movable plate which is in an L shape, one end of the movable plate is provided with a first wiring block, a first wire passing hole for penetrating the first traction wire is formed in the first wiring block, and the other end of the movable plate is provided with a force application block matched with the inner end of the positioning pin shaft. The first wire passing holes are formed, so that the first traction wires can be better arranged at the movable plate. The arrangement of the force application block enables the movable plate to be matched with the positioning pin shaft better.

Preferably, the movable plate is directly movably connected with the second connecting part. Through with fly leaf direct and second connecting portion swing joint, the inner structure of tray can be greatly simplified.

Preferably, the first connecting part comprises a first mounting plate, and two opposite sides of the first mounting plate are vertically bent towards the same side to form 2 first connecting side plates; the second connecting part comprises a second mounting plate, and two opposite sides of the second mounting plate are vertically bent towards the same side to form 2 second connecting side plates;

the first hinge shaft hole that is used for the hinge shaft to pass is all equipped with in 2 first connection sideboard departments, 2 second connection sideboard departments all are equipped with the second hinge shaft hole that is used for the hinge shaft to pass, 2 second connection sideboard are located 2 first connection sideboard inboards, the location pinhole is located 2 first connection sideboard's one of them department.

Preferably, a clamping block which is constructed into a U shape is clamped at any second connecting side plate, the clamping block comprises a U-shaped clamping block main body, a positioning bulge is arranged at the side wall of a clamping groove of the clamping block main body, and the positioning bulge is provided with a guide inclined plane which faces the second connecting side plate when being clamped; the second connecting side plate is provided with a positioning groove matched with the bottom of the clamping block main body and a positioning hole matched with the positioning protrusion. The setting of fixture block not only can be better keep the clearance between first connecting portion and the second connecting portion in order to prevent rocking about the seat support, but also can be better weaken the sound that first connecting portion and second connecting portion produced because of the friction in the rotation process.

Preferably, the lever mechanism is arranged at the second connecting part through a bracket mechanism, the bracket mechanism comprises a supporting plate for arranging the lever mechanism, and two opposite sides of the supporting plate are vertically bent towards the same side to form 2 connecting plates for being respectively connected with the 2 second connecting side plates; the positioning pin shaft is arranged at one of the 2 connecting plates, a first positioning pin hole matched with the positioning pin shaft is arranged at the second connecting side plate corresponding to the connecting plate provided with the positioning pin shaft, and the positioning pin shaft extends out of the corresponding second connecting side plate from the first positioning pin hole in a natural state. The lever mechanism is arranged by adopting the bracket mechanism, so that the arrangement of the components inside the tray can be greatly facilitated.

Preferably, the elastic piece adopts a spring and is sleeved at the part of the positioning pin shaft, which is positioned at the inner side of the corresponding connecting plate, and a cotter pin is radially penetrated at the part of the positioning pin shaft, which is positioned between the corresponding connecting plate and the corresponding second connecting side plate. Thereby better ensuring that the positioning pin shaft does not fall off.

In addition, the invention also provides a chair, which comprises a chair seat and a lifting rod arranged at the chair base, wherein any chair adjusting tray is arranged between the chair seat and the lifting rod.

Drawings

Fig. 1 is a schematic view showing the external structure of a chair adjustment tray in embodiment 1;

fig. 2 is a schematic view showing the internal structure of the chair adjustment tray of embodiment 1;

fig. 3 is a schematic structural view of the first connecting portion in embodiment 1;

fig. 4 is a schematic structural view of a second connecting portion in embodiment 1;

fig. 5 is a schematic structural diagram of the latch in embodiment 1;

FIG. 6 is a schematic diagram showing the positional relationship between the lever mechanism and the spanner block and the bracket mechanism in the embodiment 1;

fig. 7 is a schematic diagram showing the positional relationship between the lever mechanism and the bracket mechanism in embodiment 1;

fig. 8 is a schematic structural view of a bracket mechanism in embodiment 1;

fig. 9 is a schematic structural view of the lever mechanism in embodiment 1;

FIG. 10 is a schematic view of the structure of the wrench block in example 1;

fig. 11 is a schematic structural view of a connection terminal in embodiment 1;

fig. 12 is a schematic structural view of an elastic mechanism in embodiment 1;

FIG. 13 is an exploded view of the pull wire handle of example 2;

fig. 14 is a schematic structural view of a first trigger in embodiment 2;

fig. 15 is a schematic structural diagram of a first wrench socket in embodiment 2;

fig. 16 is a schematic structural view of the first trigger in embodiment 2 from another view;

FIG. 17 is an exploded view of the universal pull wire handle of example 3;

fig. 18 is a schematic structural diagram of a second wrench socket in embodiment 3;

fig. 19 is a schematic structural view of a second trigger in embodiment 3;

fig. 20 is a schematic structural view of an elastic positioning block in embodiment 3;

fig. 21 is a schematic view of the structure of the chair lift adjustment device in embodiment 4;

fig. 22 is a schematic structural view of a chair tilt adjusting apparatus in embodiment 5;

fig. 23 is a schematic structural view of the chair in embodiment 6.

Detailed Description

For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples. It is to be understood that the examples are illustrative of the present invention and are not intended to be limiting.

Example 1

As shown in fig. 1, the present embodiment provides a chair adjustment tray. The chair comprises a first connecting part 110 used for being connected with the bottom of a chair seat and a second connecting part 120 used for being connected with the upper end of a lifting rod of the chair, wherein the first connecting part 110 is hinged with the second connecting part 120 through a hinge shaft 130, and a positioning mechanism is arranged between the first connecting part 110 and the second connecting part 120.

Referring to fig. 2, the positioning mechanism includes a positioning pin 141 disposed at the second connection portion 120 and a positioning pin hole 142 disposed at the first connection portion 110 for the positioning pin 141 to extend into, and the positioning pin 141 maintains a tendency to retract inward toward the second connection portion 120 by an elastic member 210 so as to be separated from the positioning pin hole 142. The positioning pin 141 cooperates with a lever mechanism 220, and the lever mechanism 220 is configured such that one end of the lever mechanism 220 is pulled by a first traction wire 230 to drive the other end thereof to apply a force to the positioning pin 141 against the elastic force provided by the elastic member 210.

The second connecting portion 120 is provided with a lifting rod mounting hole 121 for sleeving the upper end of the lifting rod of the chair, and a wrench block 270 is arranged at the inner side of the lifting rod mounting hole 121, and one end of the wrench block 270 is driven by the pulling of a second traction wire 280 to drive the other end of the wrench block 270 to touch the lifting switch at the upper end of the lifting rod of the chair.

Referring to fig. 3, the first connection portion 110 includes a first mounting plate 241, and the first mounting plate 241 is configured to be directly connected to the bottom of the seat. Two opposite sides of the first mounting plate 241 are vertically bent toward the same side to construct 2 first connection side plates 242, first hinge shaft holes 310 for passing the hinge shaft 130 are provided at the 2 first connection side plates 242,

referring to fig. 4, the second connection part 120 includes a second mounting plate 411, and the lifter mounting hole 121 is provided at the second mounting plate 411. Two opposite sides of the second mounting plate 411 are vertically bent toward the same side to form 2 second connection side plates 412, and the second connection side plates 412 are respectively provided with a second hinge shaft hole 412a for the hinge shaft 130 to pass through.

The first and second connection parts 110 and 120 are connected by the first and second connection side plates 242 and 412 and the hinge shaft 130, and the 2 second connection side plates 412 are positioned inside the 2 first connection side plates 242 and enable the first and second connection parts 110 and 120 to rotate about the hinge shaft 130. In addition, the positioning pin 141 and the positioning pin hole 142 are respectively disposed at the second connection side plate 412 and the first connection side plate 242 on the same side.

Referring to fig. 5, a clamping block 500 having a substantially U-shape is clamped at any of the second connecting side plates 412, the clamping block 500 includes a U-shaped clamping block main body 510, a positioning protrusion 520 is provided at a clamping groove side wall of the clamping block main body 510, and the positioning protrusion 520 has a guiding inclined plane 521 facing the second connecting side plate 412 when clamped; the second connection side plate 412 is provided with a positioning groove 421 for being engaged with the bottom of the cartridge body 510 and a positioning hole 422 for being engaged with the positioning protrusion 520.

Referring to fig. 6, 7 and 8, the lever mechanism 220 and the wrench block 270 are disposed at the second connecting portion 120 through a bracket mechanism 260. The bracket mechanism 260 includes a support plate 610 for providing the lever mechanism 220, and two opposite sides of the support plate 610 are vertically bent toward the same side to configure 2 connection plates 620 for respectively connecting with 2 second connection side plates 412.

The positioning pin shaft 141 is disposed at one of the 2 connection plates 620, and a first positioning pin hole 412c for matching with the positioning pin shaft 141 is disposed at a second connection side plate 412 corresponding to the connection plate 620 provided with the positioning pin shaft 141, and the positioning pin shaft 141 extends from the first positioning pin hole 412c to the corresponding second connection side plate 412 in a natural state.

The 2 connecting plates 620 are connected with 2 second connecting side plates 412 through a connecting shaft 250, the 2 connecting plates 620 are located inside the 2 second connecting side plates 412, the 2 connecting plates 620 are respectively provided with a first connecting shaft hole for being matched with the connecting shaft 250, and the 2 second connecting side plates 412 are respectively provided with a second connecting shaft hole 412b for being matched with the connecting shaft 250.

In this embodiment, the elastic member 210 is a spring and is sleeved on a portion of the positioning pin 141 located at the inner side of the corresponding connection plate 620, and a cotter pin 630 is radially inserted through a portion of the positioning pin 141 located between the corresponding connection plate 620 and the corresponding second connection side plate 412.

In this embodiment, the wrench block 270 is disposed at the connecting shaft 250.

Referring to fig. 9, the lever mechanism 220 includes a movable plate 910 configured in an "L" shape, one end of the movable plate 910 is provided with a first connection block 930, a first wire passing hole 931 for passing through the first traction wire 230 is provided at the first connection block 930, and the other end of the movable plate 910 is provided with a force application block 940 for being matched with the inner end of the positioning pin 141.

In this embodiment, the movable plate 910 is movably connected to the supporting plate 610 at a bending portion by a connecting member 920, and the connecting member 920 can take various existing forms such as a bolt, a pin, and the like.

Referring to fig. 10, the wrench block 270 includes a wrench block body having a first plate 1010 and a second plate 1020 forming an angle with each other, a second wire passing hole 1011 for cooperating with the second wire 280 is formed at the first plate 1010, and a touch block 1021 capable of touching the upper end lifting switch of the lifting lever of the chair through the lifting lever mounting hole 121 is formed at the second plate 1020. In addition, a socket 1030 is configured at the wrench block 270, and in this embodiment, the wrench block 270 is disposed at the connection shaft 250 through the socket 1030.

Referring to fig. 11, the second traction wire 280 is disposed at the second wire passing hole 1011 through a connection terminal 1040, and the end of the second traction wire 280 has at least a first stopper body 1110 capable of passing through the second wire passing hole 1011, and the connection terminal 1040 has at least a retainer body 1120 capable of retaining the first stopper body 1110 outside the second wire passing hole 1011. In addition, a socket part capable of being inserted into the second wire passing hole 1011 is further arranged on one side of the retainer body 1120, threading channels for the second traction wire 280 to pass through are formed in the middle of the socket part and the retainer body 1120, and gaps for communicating the threading channels with the outside are formed in the side walls of the socket part and the retainer body 1120, so that the second traction wire 280 can be clamped in the threading channels through the gaps, and then the socket part is inserted into the second wire passing hole 1011, so that connection between the second traction wire 280 and the second wire passing hole 1011 can be achieved more simply.

In the present embodiment, the connection between the first traction wire 230 and the first wire through hole 931 is also achieved through the connection terminal 1040.

Referring to fig. 12, an elastic mechanism 160 is further disposed between the first connection portion 110 and the second connection portion 120, the elastic mechanism 160 includes an elastic unit, strain of the elastic unit is in a linear relationship with a distance between the first connection portion 110 and the second connection portion 120 corresponding to the elastic mechanism 160, and an initial strain of the elastic unit is adjustable.

In this embodiment, the elastic mechanism 160 includes a compression screw 1210, and the compression screw 1210 sequentially passes through the first connecting portion 110 and the second connecting portion 120 and then is in threaded engagement with an adjusting end cover 1220, and a compression spring 1230 sleeved at the compression screw 1210 is disposed between the adjusting end cover 1220 and the second connecting portion 120.

A protecting piece 1240 with a cylindrical structure is arranged between the pressing spring 1230 and the second connecting part 120, the adjusting end cover 1220 is also configured with a cylindrical structure, the protecting piece 1240 is sleeved in the adjusting end cover 1220, and the pressing spring 1230 is positioned in a cavity formed by the protecting piece 1240 and the adjusting end cover 1220; a gasket 1250 is arranged between the compression spring 1230 and the adjusting end cover 1220, and a limit nut 1260 connected with the compression screw 1210 is arranged outside the adjusting end cover 1220.

In this embodiment, the first traction wire 230 is driven by a first wrench 150, and the first wrench 150 has at least one station capable of holding the force application block 940 of the lever mechanism 220 to press the positioning pin 141 into the positioning pin hole 142. The first traction wire 230 is further provided with a first traction wire sleeve 180 at an outer side thereof, and both ends of the first traction wire sleeve 180 are respectively connected with the second connecting portion 120 and the first wrench 150.

In this embodiment, the second traction wire 280 is driven by a second wrench 170, and a second traction wire sleeve 190 is further disposed on the outer side of the second traction wire 280, and two ends of the second traction wire sleeve 190 are respectively connected to the second connecting portion 120 and the second wrench 170.

It should be noted that the present embodiment is only a preferred embodiment, and in practical application, the wrench block 270 only needs to have a pivot point between two ends, and the wrench block 270 can rotate about the pivot point to realize the lifting adjustment function of the seat. In this embodiment, the wrench block 270 is disposed at the connecting shaft 250, and the connection between the wrench block 270 and the connecting shaft 250 or the connection between the connecting shaft 250 and the second connecting portion 120 can form a fulcrum separately or jointly, that is, at least one portion between the wrench block 270 and the connecting shaft 250 and between the connecting shaft 250 and the second connecting portion 120 can be rotatably engaged. In addition, the wrench block 270 can be provided at the hinge shaft 130, and it is sufficient to ensure that the wrench block 270 can be freely rotated.

In addition, the lever mechanism 220 and the positioning mechanism can be directly disposed at the second connecting portion 120 in a specific application, i.e., the bracket mechanism 260 can be omitted.

In addition, a stroke limiting slot may be provided at the first connection portion 110, and a stroke limiting pin extending into the stroke limiting slot may be provided at the second connection portion 120, so that the first connection portion 110 and the second connection portion 120 may be rotated within a maximum limiting angle.

Example 2

This embodiment provides a pull wire handle that can be used as a specific implementation of the first wrench 150 of embodiment 1.

As shown in fig. 13, the wire pulling handle of the present embodiment includes a first wrench socket 1310 and a first pulling portion 1320, wherein the first wrench socket 1310 and the first pulling portion 1320 are coaxially and rotatably connected by a first wrench pin 1330; the first pulling part 1320 includes a first movable column 1321, and a first pulling block 1322 is provided at a side wall of the first movable column 1321 in a radial direction; the first wrench socket 1310 is internally configured with a first rotating chamber 1410 for receiving the first movable post 1321, the first rotating chamber 1410 having at least a travel port 1340 for the first wrench block 1322 to be freely wrenched in the circumferential direction.

Referring to fig. 14 and 15, a first travel channel 1321a is formed at a side wall of the first movable column 1321, and a baffle 1510 with elastic deformation property, which arches to the outside of the first movable column 1321, is provided in the first travel channel 1321 a; the inner wall of the first rotation chamber 1410 is provided with a positioning block 1420 corresponding to the first travel channel 1321a, and the positioning block 1420 interferes with the baffle 1510.

The first socket 1310 is provided with a first wire passing port 1311 for passing a rope therethrough, and the first movable post 1321 is provided with a first wire connection groove 1321b for fixing an end portion of the rope. The first wiring groove 1321b includes a first fixing hole 1610 for fitting with the rope end block and a winding groove 1620 extending along the circumferential direction of the first movable post 1321 and communicating with the first fixing hole 1610, and the first wire passing port 1311 includes a penetrating hole 1430 for passing the rope end block. The first spanner block 1322 has a plurality of protrusions on a surface thereof.

When the pull wire handle in this embodiment is used as the first wrench 150 in embodiment 1, a second blocking body can be disposed at the end portion of the first pull wire 230, which is matched with the first connection slot 1321b, and the second blocking body can be disposed in the first fixing hole 1610 after passing through the hole 1430, and the first pull wire 230 at the second blocking body can be hidden in the winding slot 1620, so that the first pull wire 230 cannot affect the rotation between the first movable post 1321 and the first rotation cavity 1410.

Example 3

This embodiment provides a universal cord grip that can function as either the first wrench 150 or the second wrench 170 of embodiment 1 with simple modification.

As shown in fig. 17, the universal cord grip of the present embodiment includes a second wrench socket 1710 and a second pulling portion 1720, the second wrench socket 1710 and the second pulling portion 1720 being coaxially and rotatably connected by a second wrench pin 1730.

Referring to fig. 18 and 19, the second wrench socket 1710 includes a second rotating cavity 1830, and the second wrench portion 1720 has a second movable post 1910 for rotating engagement with the second rotating cavity 1830; the second rotating chamber 1830 has a threading hole 1711 on the side wall for the rope to pass through, and the second movable column 1910 is used for connecting the rope passing through the threading hole 1711.

The second rotating cavity 1830 is open at both ends, and the second movable column 1910 extends into the second rotating cavity 1830 from one end and is connected to a movable end cover 1740 by a second wrench pin 1730, and the second movable column 1910 and the movable end cover 1740 are relatively stationary and can rotate relative to the second rotating cavity 1830.

The second rotating cavity 1830 is provided at an inner wall thereof with a first stopper protrusion 1810 and a second stopper protrusion 1820 at a spaced apart position, and the second movable pillar 1910 is configured with a third stopper protrusion 1911 that interferes with the first stopper protrusion 1810 and the second stopper protrusion 1820 in the radial direction at a position between the first stopper protrusion 1810 and the second stopper protrusion 1820.

The inner wall of the second rotating cavity 1830 is also provided with a positioning block mounting cavity 1831 for arranging an elastic positioning block 2000, and the side wall of the second movable column 1910 is provided with a positioning part 1912 capable of interfering with the elastic positioning block 2000; the side of the elastic positioning block 2000 facing the positioning portion 1912 is a positioning block interference side 2010, and the positioning block interference side 2010 has an elastic deformation characteristic and is configured with at least 1 positioning groove 2020 for engaging with the positioning portion 1912.

Referring to fig. 20, a buffer hole 2030 is provided in the middle of the elastic positioning block 2000, and the buffer hole 2030 covers at least the positioning block interference side 2010.

In this embodiment, a clamping block groove 1920 for matching with an end clamping block of the rope is provided at the second movable column 1910, and an installation groove 1711a is provided between the inner wall of the threading hole 1711 and one end surface of the second wrench seat 1710.

When the universal pull wire handle of the present embodiment is used as the first wrench 150 in embodiment 1, the elastic positioning block 2000 is only required to be placed in the positioning block mounting cavity 1831.

When the universal pull wire handle of the present embodiment is used as the second wrench 170 in embodiment 1, the elastic positioning block 2000 is not required to be placed in the positioning block mounting cavity 1831.

In addition, when the universal wire handle in the present embodiment is matched with the first traction wire 230 or the second traction wire 280, a clamping block can be arranged at the end of the first traction wire 230 or the second traction wire 280, the connection between the first traction wire 230 or the second traction wire 280 and the second movable column 1910 can be preferably realized through the matching of the clamping block and the clamping block groove 1920, and the first traction wire 230 or the second traction wire 280 can be placed into the threading hole 1711 through the installation channel 1711a.

Example 4

The embodiment provides a chair lifting adjusting device which can adjust the height of a chair seat in a rope control mode.

As shown in fig. 21, the chair lift adjustment device of the present embodiment is compared with embodiment 1: it has at least the second connecting portion 120 and the wrench block 270 of embodiment 1, the wrench block 270 is disposed at the second connecting portion 120 by a mechanism such as the connecting shaft 250, and the wrench block 270 is also driven by the second wrench 170 through the second traction wire 280.

In this embodiment, the second wrench 170 employs the universal cord grip of embodiment 3.

Example 5

The embodiment provides a chair tilt adjusting device, which can preferably adjust the tilt angle of a chair seat in a rope control manner.

As shown in fig. 22, the chair tilt adjustment device of the present embodiment is compared with embodiment 1: at least without the wrench block 270 and the components or structures for mating with the wrench block 270.

In this embodiment, the first wrench 150 can employ the wire pulling handle of embodiment 2 or the universal wire pulling handle of embodiment 3.

Example 6

As shown in fig. 23, the present embodiment provides a chair comprising a seat 1 and a chair base 2, wherein the seat 1 and the chair base 2 are connected by a connecting chassis 3.

The connection chassis 3 can include the chair adjustment tray in embodiment 1, or the chair lift adjustment device in embodiment 4, or the chair tilt adjustment device in embodiment 5.

The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.

Claims (20)

1. Chair adjustment tray, its characterized in that:

comprises a first connecting part (110) used for being connected with the bottom of the chair seat and a second connecting part (120) used for being connected with the upper end of a lifting rod of the chair, wherein the first connecting part (110) is hinged with the second connecting part (120) through a hinge shaft (130), and a positioning mechanism is arranged between the first connecting part (110) and the second connecting part (120);

the positioning mechanism comprises a positioning pin shaft (141) arranged at the second connecting part (120) and a positioning pin hole (142) arranged at the first connecting part (110) and used for the positioning pin shaft (141) to extend into, and the positioning pin shaft (141) keeps a trend of contracting inwards towards the second connecting part (120) through an elastic piece (210) so as to be separated from the positioning pin hole (142);

the positioning pin shaft (141) is matched with a lever mechanism (220), and one end of the lever mechanism (220) is driven by the pulling of a first traction wire (230) to force the positioning pin shaft (141) against the elasticity provided by the elastic piece (210);

a lifting rod mounting hole (121) for sleeving the upper end of the lifting rod of the chair is formed in the second connecting part (120), a spanner block (270) is arranged at the inner side of the lifting rod mounting hole (121), and one end of the spanner block (270) is constructed to drive the other end of the spanner block to touch a lifting switch at the upper end of the lifting rod of the chair under the pulling of a second traction wire (280); the spanner block (270) is provided with a fulcrum between the one end and the other end, and the spanner block (270) is configured to rotate around the fulcrum;

the second traction wire (280) is driven by a second spanner (170), the second spanner (170) comprises a second spanner seat (1710) and a second spanner portion (1720), and the second spanner seat (1710) and the second spanner portion (1720) are coaxially and rotatably connected through a second spanner pin (1730); the second spanner seat (1710) is provided with a second rotating cavity (1830) with two open ends, the second spanner portion (1720) is provided with a second movable column (1910) matched with the second rotating cavity (1830), and the second traction wire (280) passes through the side wall of the second rotating cavity (1830) and then is connected with the second movable column (1910).

2. The chair adjustment tray of claim 1, wherein:

the spanner block (270) is arranged at the second connecting part (120) through the hinge shaft (130) or a connecting shaft (250), and the joint of the hinge shaft (130) or the connecting shaft (250) and the second connecting part (120) or the joint of the hinge shaft (130) or the connecting shaft (250) and the spanner block (270) forms a fulcrum.

3. The chair adjustment tray of claim 2, wherein:

a socket (1030) is formed at the wrench block (270) for being sleeved at the connecting shaft (250).

4. The chair adjustment tray of claim 1, wherein:

the spanner block (270) comprises a spanner block main body, the spanner block main body is provided with a first plate (1010) and a second plate (1020) which form an included angle with each other, a second wire passing hole (1011) which is used for being matched with the second traction wire (280) is arranged at the first plate (1010), and a touch block (1021) which can touch a lifting switch at the upper end of a lifting rod of the chair through a lifting rod mounting hole (121) is arranged at the second plate (1020).

5. The chair adjustment tray of claim 4, wherein:

the second traction wire (280) is arranged at the second wire passing hole (1011) through a connecting terminal (1040), the end part of the second traction wire (280) is at least provided with a first baffle block (1110) which can pass through the second wire passing hole (1011), and the connecting terminal (1040) is at least provided with a baffle ring body (1120) which can clamp the first baffle block (1110) at the outer side of the second wire passing hole (1011).

6. The chair adjustment tray of claim 1, wherein:

the inner wall of the second rotating cavity (1830) is provided with a first limit protrusion (1810) and a second limit protrusion (1820), and the second movable column (1910) is provided with a third limit protrusion (1911) interfering with the first limit protrusion (1810) and the second limit protrusion (1820) when rotating at a position between the first limit protrusion (1810) and the second limit protrusion (1820).

7. The chair adjustment tray of claim 1, wherein:

the second traction wire (280) is used for being connected with one end of second movable column (1910) and is provided with the joint piece, and second movable column (1910) department is constructed and is used for placing joint piece groove (1920) of joint piece, and second rotation chamber (1830) lateral wall department is equipped with threading hole (1711) that are used for second traction wire (280) to pass through, is equipped with mounting channel (1711 a) between threading hole (1711) inner wall and second rotation chamber (1830) one end terminal surface.

8. The chair adjustment tray of claim 1, wherein:

a second traction wire sleeve (190) is further arranged on the outer side of the second traction wire (280), and two ends of the second traction wire sleeve (190) are respectively connected with the second connecting part (120) and the second spanner seat (1710).

9. The chair adjustment tray of claim 1, wherein:

an elastic mechanism (160) is further arranged between the first connecting portion (110) and the second connecting portion (120), the elastic mechanism (160) comprises an elastic unit, the strain of the elastic unit is in linear relation with the distance between the first connecting portion (110) and the second connecting portion (120) corresponding to the elastic mechanism (160), and the initial strain of the elastic unit is adjustable.

10. The chair adjustment tray of claim 1, wherein:

the first traction wire (230) is driven by a first wrench (150), and the first wrench (150) is provided with at least one station capable of keeping the other end of the lever mechanism (220) to press the positioning pin shaft (141) into the positioning pin hole (142).

11. The chair adjustment tray of claim 10, wherein:

the first wrench (150) comprises a first wrench seat (1310) and a first wrench part (1320), wherein the first wrench seat (1310) and the first wrench part (1320) are coaxially and rotatably connected through a first wrench pin (1330); the first pulling part (1320) comprises a first movable column (1321), a first pulling block (1322) is arranged at the side wall of the first movable column (1321) along the radial direction, a first rotating cavity (1410) for accommodating the first movable column (1321) is formed in the first wrench seat (1310), and the first rotating cavity (1410) is at least provided with a travel port (1340) for freely pulling the first pulling block (1322) along the circumferential direction; a first travel channel (1321 a) is formed in the side wall of the first movable column (1321), and a baffle (1510) with elastic deformation property, which is arched towards the outer side of the first movable column (1321), is arranged in the first travel channel (1321 a); a positioning stop block (1420) is arranged on the inner wall of the first rotating cavity (1410) corresponding to the first travel channel (1321 a), and the positioning stop block (1420) is interfered with the baffle plate (1510).

12. The chair adjustment tray of claim 11, wherein:

the first wrench seat (1310) is provided with a first wire passing port (1311) for the first traction wire (230) to pass through, and the first movable column (1321) is provided with a first wire connecting groove (1321 b) for fixing the end part of the first traction wire (230).

13. The chair adjustment tray of claim 12, wherein:

the end of the first traction wire (230) matched with the first wire connecting groove (1321 b) is provided with a second baffle body, the first wire connecting groove (1321 b) comprises a first fixing hole (1610) used for placing the second baffle body and a winding groove (1620) extending along the circumferential direction of the first movable column (1321) and communicated with the first fixing hole (1610), and at least a penetrating hole (1430) used for the second baffle body to penetrate is formed at the first wire through hole (1311).

14. The chair adjustment tray of claim 1, wherein:

the lever mechanism (220) comprises a movable plate (910) which is in an L shape, one end of the movable plate (910) is provided with a first wiring block (930), a first wire passing hole (931) for penetrating the first traction wire (230) is formed in the first wiring block (930), and the other end of the movable plate (910) is provided with a force application block (940) which is matched with the inner end of the positioning pin shaft (141).

15. The chair adjustment tray of claim 14, wherein:

the movable plate (910) is directly and movably connected with the second connecting part (120).

16. The chair adjustment tray of claim 1, wherein:

the first connecting part (110) comprises a first mounting plate (241), and two opposite sides of the first mounting plate (241) are vertically bent towards the same side to form 2 first connecting side plates (242); the second connecting part (120) comprises a second mounting plate (411), and two opposite sides of the second mounting plate (411) are perpendicularly bent towards the same side to form 2 second connecting side plates (412);

the first hinge shaft holes (310) used for allowing the hinge shafts (130) to pass through are formed in the positions of the 2 first connecting side plates (242), the second hinge shaft holes (412 a) used for allowing the hinge shafts (130) to pass through are formed in the positions of the 2 second connecting side plates (412), the 2 second connecting side plates (412) are located on the inner sides of the 2 first connecting side plates (242), and the positioning pin holes (142) are formed in one of the 2 first connecting side plates (242).

17. The chair adjustment tray of claim 16, wherein:

a clamping block (500) which is constructed into a U shape is clamped at any second connecting side plate (412), the clamping block (500) comprises a U-shaped clamping block main body (510), a positioning bulge (520) is arranged at the side wall of a clamping groove of the clamping block main body (510), and the positioning bulge (520) is provided with a guide inclined plane (521) which faces the second connecting side plate (412) when being clamped; the second connecting side plate (412) is provided with a positioning groove (421) matched with the bottom of the clamping block main body (510) and a positioning hole (422) matched with the positioning protrusion (520).

18. The chair adjustment tray of claim 16, wherein:

the lever mechanism (220) is arranged at the second connecting part (120) through a bracket mechanism (260), the bracket mechanism (260) comprises a supporting plate (610) for arranging the lever mechanism (220), and two opposite sides of the supporting plate (610) are vertically bent towards the same side to form 2 connecting plates (620) for being respectively connected with the 2 second connecting side plates (412); the positioning pin shaft (141) is arranged at one of the 2 connecting plates (620), a first positioning pin hole (412 c) for being matched with the positioning pin shaft (141) is arranged at a second connecting side plate (412) corresponding to the connecting plate (620) provided with the positioning pin shaft (141), and the positioning pin shaft (141) extends out of the first positioning pin hole (412 c) from the corresponding second connecting side plate (412) in a natural state.

19. The chair adjustment tray of claim 18, wherein:

the elastic piece (210) adopts a spring and is sleeved at the part of the positioning pin shaft (141) positioned at the inner side of the corresponding connecting plate (620), and a cotter pin (630) is radially penetrated at the part of the positioning pin shaft (141) positioned between the corresponding connecting plate (620) and the corresponding second connecting side plate (412).

20. Chair, including the seat support and locate the lifter of chair base department, its characterized in that:

a chair adjustment tray according to any one of claims 1 to 19 provided between the seat and the lifter.

Images