WO2019166024A1

WO2019166024A1 - Support frame, and chair using same

Info

Publication number: WO2019166024A1
Application number: PCT/CN2019/077016
Authority: WO
Inventors: 田西岳
Original assignee: 田西岳
Priority date: 2018-01-10
Filing date: 2019-03-05
Publication date: 2019-09-06
Also published as: CN108185706A; CN208863884U

Abstract

A support frame, and a chair (50) using the same. The support frame comprises a support board (10) and a fastening component (20). The fastening component (20) is disposed at a bottom portion of the support board (10), and is used to detachably dispose the support board (10) at armrest portions on a left and right side of the chair (50). A front end of the support board (10) is provided with transverse arrangement portions (10a). The support board (10) comprises a left support board (11) and a right support board (12) disposed at the left and right side of the chair (50), respectively. The transverse arrangement portions (10a) of the left support board (11) and the right support board (12) extend from the left and right sides of the chair (50) toward the middle, and are transversely disposed in front of a user, such that the user can naturally stretch their left and right arms in front of their body and place their arms above the transverse arrangement portions (10a) to perform an operation. The support board (10) is transversely arranged in front of and adjacent to the user, so as to enable the user to reach two split keyboards by naturally stretching their arms, such that a user does not need to bend forward when performing an operation, thereby providing lumbar support for the user, and eliminating fatigue due to prolonged use of the keyboards for work or entertainment.

Description

Bracket and its chair

Technical field

The invention relates to the technical field of tables and chairs, in particular to a bracket with two left and right carriages and a chair thereof.

Background technique

The current chair has a simple structure. Although there is a backrest for people to use, during the work or entertainment process, most of the time, the person's body leans forward, and the back of the back is separated from the back of the chair, and the posture is maintained for a long time, which is more likely to cause people to be exhausted.

Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bracket and a chair thereof to solve the technical problem in the prior art that people sitting on a chair can easily lean forward from the backrest to cause physical exhaustion.

In order to solve the above technical problem, the present invention provides a bracket including a pallet and a fixing component;

The fixing member is disposed at a bottom of the pallet for positioning the pallet on an armrest portion of left and right sides of the chair;

The front end of the pallet is provided with a transverse portion (ie, the front end of the pallet protrudes inwardly, or the front end of the pallet protrudes toward the inner side of the chair);

The pallet includes a left pallet and a right pallet respectively disposed on the left and right sides of the chair;

In the state of use, the transverse portions of the left and right pallets extend from the left and right sides of the chair to the middle (ie, in front of the chest or in front of the body) and are laterally placed on the front side of the human body, so as to facilitate The left and right hands of the person naturally extend to the front of the body and are placed above the transverse portion for operation.

The bracket disclosed by the invention is mainly used for the use of the split keyboard, and the split keyboard can be respectively placed on the left pallet and the right pallet, and the pallet is placed horizontally in front of the person and is more closely attached to the body. The arm naturally extends out to touch two separate keyboards. It does not require the human body to tilt forward to operate, and the back of the human body is supported. The user does not feel tired when working or playing for a long time.

Further, the left tray and the right tray are respectively movably disposed on the respective corresponding fixing members for the lateral portion to be withdrawn from the middle of the chair to facilitate the person to sit in or out of the chair.

Further, the pallet is generally L-shaped as a whole, and the pallet further comprises a longitudinal portion, wherein the transverse portion is disposed at an outer front of the longitudinal portion of the chair, and the transverse portion is inverted The middle of the chair exits so that people can sit in or out of the chair.

The longitudinal portion can be used to support the forearm of the human body, the forearm is naturally placed down on the longitudinal portion, and the hand is placed above the transverse portion for easy operation of the mouse or keyboard.

Further, the fixing component includes a base connector, and a rear end of the pallet is pivotally connected to the base connector by a pivot shaft;

Alternatively, the outer edge of the pallet is hingedly connected to the base connector by a hinge shaft, and the hinge shaft is parallel to the pallet, and the pallet can be turned over to both sides of the chair;

Or the tray is translatably disposed on the base connector by a limit guiding mechanism;

Among them, the limit guiding mechanism has many forms, such as a sliding rail, a matching linear or curved guiding groove and a slider, or a guide rail and a card slot.

Alternatively, the pallet can be quickly disassembled on the base connector.

Among them, there are many quick disassembly methods, such as quick-release screws, chucks, and the like.

The movable arrangement of the pallet can be achieved by the above-described schemes, so that the transverse portion can be withdrawn from the middle of the chair to facilitate the person to sit in or out of the chair.

The basic connector has many forms, including a substrate or a pedestal.

Further, an intermediate transition member disposed between the base connector and the armrest of the chair is further included;

The intermediate transition piece is provided with at least one set of first connecting holes for connecting with the base connecting piece, and at least one set of second connecting holes for connecting with the armrest of the chair;

The central axes of the second connecting holes and the first connecting holes are non-parallel for connecting the base connecting member to the armrest of the chair.

Preferably, the intermediate transition piece is generally wedge-shaped for adjusting the pitch angle of the pallet. The second connecting hole and the first connecting hole are arranged in a matrix to facilitate fitting to different specifications of the armrest, and adjusting the pitch angle of the pallet by adjusting the wedging depth.

Further, the bottom surface and/or the top surface of the intermediate transition piece are provided with a groove for engaging with the armrest of the chair.

Further, a bottom surface and/or a top surface of the intermediate transition piece is provided with a rubber layer.

Further, the front end of the cross section of the intermediate transition piece is curved downwardly to fit the arc-shaped front end of the armrest.

Further, the base connector is provided with a connection structure for fixing the fixing member to both sides of the chair.

Further, the connecting structure comprises a plurality of pressing plates, and the pressing plate is connected to the basic connecting member by bolts and nuts, and the base connecting member and the pressing plate respectively hold the armrests of the chair from above and below, and then the basic connecting members are further It is fixed on the armrest of the chair.

Further, the base connector bottom portion is provided with a plurality of sets of spaced threaded hole groups in the longitudinal direction (the armrest length direction, or the front-rear direction).

The bolts are optionally connectable to different sets of threaded holes for connection to different length gauge armrests.

Further, the threaded hole group includes threaded holes arranged in pairs, and bolts arranged in pairs are connected to the bottom of the base connecting member through screw holes; the bolts in each pair are symmetrically disposed on the left and right sides of the armrest (armrest setting) In the middle of the two connecting fasteners).

The base connector and the pressure plate are provided with a rubber layer at a contact portion with the armrest.

Further, the connecting structure comprises: a first clamping plate, a second clamping plate and a pressing bolt; the first clamping plate and the second clamping plate are erected at the bottom of the base connector; the first clamping a clamping space for accommodating the armrest of the chair is disposed between the plate and the second clamping plate;

a threaded through hole is disposed on the first clamping plate and/or the second clamping plate;

The pressing bolt protrudes from the outside into the clamping space through a threaded through hole of the first clamping plate or the second clamping plate, and the top of the pressing bolt abuts against the side of the handrail, thereby realizing the handrail Fixed connection.

Further, a top of the pressing bolt is provided with a pressing block, and the pressing bolt abuts against the side of the armrest through the pressing block.

Further, the threaded through holes of the first clamping plate and the second clamping plate are arranged in a matrix.

Further, the first clamping plate and the second clamping plate are respectively strip-shaped; the bottom of the basic connecting member and the two sides of the armrest are respectively spaced apart from the first clamping plate and The second clamping plate;

Each of the first clamping plate and the second clamping plate are respectively spaced apart from each other in the height direction by a plurality of the threaded through holes.

A plurality of the compression bolts are selectively screwed into a plurality of threaded through holes according to the length of the armrest and the height of the fixing member, thereby fixing the fixing member to the armrest.

Further, the fixing member is provided at the bottom of the base connector with a card slot for engaging on both side edges of the chair panel of the chair;

The fixing member is divided into a left fixing member disposed under the left tray, and a right fixing member disposed under the right tray;

The left fixing member and the right fixing member are respectively attached to the left and right sides of the seat panel through the card slot, and the left fixing member and the right fixing member are connected by a connecting member.

Further, the connecting member is a tension spring disposed under the seat panel, and two ends of the tension spring are respectively connected with the left fixing member and the right fixing member, and tend to force the left fixing member and the right fixing portion The components are respectively moved in the middle and abut against both sides of the seat panel;

Alternatively, the connecting member is a connecting rod below the seat panel, and two ends of the connecting rod are detachably and fixedly connected to the left fixing member and the right fixing member respectively;

Alternatively, the connecting member is a length-adjustable telescopic rod below the seat panel, and two ends of the telescopic rod are detachably connected to the left fixing member and the right fixing member, respectively.

The telescopic rod includes a connecting rod, a connecting sleeve and a locking member; the connecting rod is slidably inserted in the connecting sleeve, and the locking member is used for fixedly connecting the two.

Wherein, the locking member may be a screw member, and the screw member protrudes from the outside of the connecting sleeve into the connecting sleeve, and the top portion abuts against the connecting rod to lock the two.

Further, the bottoms of the left and right pallets are provided with clips for clamping the base connectors.

By providing a clip, the connection between the pallet and the base connector can be further enhanced, increasing the degree of stability between the two.

Further, the bottom of the base member is located at the end of the sliding track of the clip head, and is provided with a limiting structure such as a card slot or a card block.

Further, a ball is disposed between the clip and the left tray and the right tray.

Wherein, the ball is rotatably disposed on the clip or the pallet, and the clip clamps the left pallet and the right pallet by the ball, and the relative sliding between the clip and the pallet is further improved as the clip rotates with the pallet Smooth.

Preferably, the clip comprises an elastic clamping plate, one end of the clamping plate is connected with the bottom of the supporting plate, and a clamping groove for clamping the basic connecting member is formed between the clamping plate and the supporting plate, and the clamping plate is formed Abutting against the bottom of the base connector under elastic force, the base connector is clamped between the pallet and the clamping plate.

Further, in the state of use, the transverse portions of the two pallets abut together or maintain an interval of 10-40 cm.

When in use, the two transverse portions are abutted together, and can be used for placing office appliances such as a keyboard or a notebook, so that people can use it for office or entertainment.

When the two transverse portions are kept at a certain interval, the two left and right portions of the split keyboard can be separately placed, and the human hands are naturally placed on the left and right branches of the split keyboard and operated.

Further, further comprising a support cantilever, the support cantilever includes an arm set and a clamping seat, the clamping seat is pivotally connected at a lower end of the arm set for clamping and connecting the chair panel; the arm set The upper end is connected to the transverse portion;

Wherein, the arm set includes at least two arm joints that are pivoted first and last. During the translation of the transverse portion, the arm sets are bent or straightened, and when straightened, the transverse portion can be supported or stretched. The function also prevents the pallet from being lifted up or bent downward.

Further, a corner limiting structure for limiting the swing angle of the arm set is disposed between the arm set and the holder;

And/or, a corner limiting structure is disposed between adjacent two arm segments in the arm set.

Further, a corner limiting structure for defining a relative rotation angle between the bracket and the base connector is disposed.

Further, a pitch adjustment mechanism for adjusting a pitch angle at which the front end of the pallet is raised or dropped is further included.

Wherein, the pitch adjustment mechanism is in many forms, for example, the pitch adjustment mechanism is a wedge-shaped block having a triangular or trapezoidal cross section, the wedge block being interposed between the base connector and the armrest, or the base connector and the bracket Between the plates, the pitch angle of the pallet can be adjusted by adjusting the wedge depth of the wedge block, so that it is suitable for different users.

Alternatively, the pitch adjusting mechanism is an intermediate connecting member, and the pallet is pivotally connected to the base connecting member via an intermediate connecting member, and the intermediate connecting member is horizontally swingably hingedly connected to the base connecting member, and the supporting plate can be tilted at an angle Adjustably pivoted to the intermediate connector.

A corner limiting structure is arranged between the intermediate connecting member and the pallet, such as an arc guiding groove and a locking screw sliding in the guiding groove, the locking screw is loosened, the pitch angle of the pallet is adjustable, and the locking is tightly locked. The bolt locks the pallet.

Further, the longitudinal portion of the pallet is a trapezoid having a front width and a rear narrow portion and an oblique side edge disposed on the inner side of the chair. In turn, it is convenient for the supporter to naturally tilt the forearm placed in the middle.

Further, the pallet is provided with a pen holder, a mobile phone holder, a small keyboard holder and/or a water cup holder.

Further, a top surface of the longitudinal portion is provided with a sinking groove for accommodating the transverse portion, and the vertical portion is provided with a lifting plate in the sinking groove, and the horizontal portion is reversibly disposed at The lifting plate; after the transverse portion is unfolded and the lifting plate is raised, the top surface of the transverse portion and the lifting plate are flush with the top surface of the longitudinal portion; the transverse portion is turned to the outside and is lowered with the lifting plate After entering the sinking groove, the bottom surface of the transverse portion is flush with the top surface of the longitudinal portion.

Alternatively, the transverse portion is turned over in the range of 90-180°, and the transverse portion is inverted or erected above the longitudinal portion.

A corner limiting mechanism may be disposed between the transverse portion and the longitudinal portion, and the limit of the turning angle of the transverse portion is implemented.

With the above technical solution, the present invention has the following beneficial effects:

The bracket provided by the invention has the advantages of simple structure and easy promotion, and an integrated or split keyboard can be placed on the pallet, and the human arm can naturally reach out and touch the keyboard, and the human body can be operated without tilting forward. The back of the human body is supported, and the user does not feel tired when working or playing for a long time.

In addition, the pallet can be horizontally rotated to facilitate people to enter the seat, and can also adjust the opening and closing degree of the left pallet and the right pallet according to their own usage habits, thereby reducing the fatigue of long hours of work and entertainment.

Moreover, the pallet can be tilted and adjusted, which is more convenient for people to rely on the back of the chair during operation to reduce the degree of fatigue.

In addition, the present invention also discloses a chair with the above-mentioned bracket, the left and right pallets are respectively disposed on the left and right sides of the chair through the fixing members;

The fixing member is detachably connected to the chair, or the fixing member is integrally provided with the chair.

When the body is arranged separately, the chair and the bracket are independent of each other, and when used, the bracket can be connected to the chair through the fixing member; or the fixing member is integrally provided with the chair, and the pallet is disposed on the armrest portions on both sides of the chair through the fixing member.

DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions of the prior art, the drawings used in the specific embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a perspective view of the bracket according to Embodiment 1 of the present invention when it is opened;

2 is a perspective view of the bracket according to Embodiment 1 of the present invention when it is closed for use;

Figure 3 is a perspective view showing the bracket in the first embodiment of the present invention when it is placed on a chair;

4 is a schematic structural view of a bottom portion of a bracket according to Embodiment 1 of the present invention;

Figure 5 is a schematic structural view showing a connection structure of a fixing member in Embodiment 2 of the present invention;

Figure 6 is a schematic structural view showing a connection structure of a fixing member in Embodiment 3 of the present invention;

Figure 7 is a perspective view of an intermediate transition piece in an embodiment of the present invention;

Figure 8 is a cross-sectional view of the intermediate transition piece in the embodiment of the present invention;

9 is a schematic structural view of a bottom portion of a bracket with a limited position mechanism at the bottom of a basic connecting member according to an embodiment of the present invention;

Figure 10 is a schematic structural view of a longitudinal portion according to Embodiment 4 of the present invention;

Figure 11 is a schematic structural view of the transverse portion of the embodiment 4 after being turned over;

Figure 12 is a schematic structural view of the transverse portion of the embodiment 4 of the present invention;

Fig. 13 is a structural schematic view showing another flipping manner of the transverse portion in the fourth embodiment of the present invention.

Reference mark:

1-bolt; 2-nut; 10-plate; 10a-transverse; 10b-longitudinal; 10c-lifting plate; 10d-sinking; 11-left pallet; 12-right pallet; Axle; 14-pen holder; 15-cup holder; 16-cell holder; 20-fixing member; 20a-left fixing member; 20b-right fixing member; 21-base connector; 21a-threaded hole group; 22-platen; 23-first clamping plate; 24-second clamping plate; 24a-threaded through hole; 25-compression bolt; 26-pressing block; 27-card slot; 28-connecting sleeve; 28a-locking member; 29-connecting rod; 30-supporting cantilever; 31-clamping seat; 32-arm set; 40-clip; 41-stop structure; 50-chair; 51-chair panel; 70-intermediate transition piece; Two connection holes; 72 - first connection holes; 73 grooves.

Detailed ways

The technical solutions of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the description of the present invention, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplified description, rather than indicating or implying that the device or component referred to has a specific orientation, in a specific orientation. The construction and operation are therefore not to be construed as limiting the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

The invention will be further explained below in conjunction with specific embodiments.

Example 1

As shown in FIG. 1 to FIG. 3, a bracket provided by the embodiment includes a pallet 10 and a fixing member 20;

The fixing member 20 is disposed at the bottom of the pallet 10 for detachably arranging the pallet 10 on the left and right side of the chair 50;

The front end of the pallet 10 is provided with a transverse portion 10a;

The pallet 10 includes a left pallet 11 and a right pallet 12 respectively disposed on the left and right sides of the chair 50;

As shown in FIG. 3, in the use state, the transverse portions 10a of the left and

right pallets

11 and 12 are respectively extended from the left and right sides of the chair 50 to the middle (ie, in front of the chest or in front of the body) and are placed transversely. On the front side of the human body, the left and right hands of the person naturally extend to the front of the body and are placed above the transverse portion 10a for operation.

The bracket disclosed in the present invention is mainly used for the use of a split keyboard, and the split keyboard can be respectively placed on the left tray 11 and the right tray 12, and the tray 10 is horizontally placed in front of the person and is more closely attached. The body, the human arm naturally extends to touch the two separate keyboards, and the human body does not need to be tilted forward to operate, the back of the human body is supported, and the user does not feel tired when working or playing for a long time.

Wherein, as shown in FIG. 4, the left pallet 11 and the right pallet 12 are respectively rotatably disposed on the respective corresponding fixing members 20 through the pivot shaft 13, for the lateral portion 10a to be withdrawn from the middle of the chair 50 so as to be facilitated. The person sits in or leaves the chair 50.

The pallet 10 is generally generally L-shaped, and the pallet 10 further includes a longitudinal portion 10b that is transverse (i.e., substantially perpendicular) to the forward end of the longitudinal portion 10b.

The longitudinal portion 10b can be used to support the forearm of the human body, and the forearm is naturally placed down on the longitudinal portion 10b, and the hand is placed above the transverse portion 10a for easy operation of the mouse or the keyboard.

In any of the above technical solutions, further, the fixing member 20 includes a base connector 21, and a rear end of the longitudinal portion 10b is pivotally connected to the base connector 21.

The base connector 21 is provided with a connection structure for fixing the fixing member 20 to both sides of the chair 50. The connecting structure includes a plurality of pressing plates 22 connected to the base connecting member 21 by bolts 1 and nuts 2, and the base connecting member 21 and the pressing plate 22 respectively grip the armrests of the chair 50 from above and below, thereby fixing the base connecting member 21 On the armrest of the chair 50.

The bottom of the base connector 21 is provided with a plurality of sets of spaced-apart threaded hole groups 21a in the longitudinal direction (the armrest length direction, or the front-rear direction).

The bolts are optionally connected to different sets of threaded holes 21a for connection to different length gauge armrests.

Wherein, the threaded hole group 21a includes threaded holes arranged in pairs, and the bolts 1 disposed in pairs are connected to the bottom of the base connecting member 21 through the screw holes; each pair of bolts are symmetrically disposed on the left and right sides of the armrest of the chair 50 (the armrest is disposed at two The middle of the bolt 1).

More preferably, the base connector 21 and the pressure plate 22 are provided with a rubber layer at a portion in contact with the armrest. Thereby the armrest is protected while the armrest is clamped more firmly.

Further, the bottom of the left pallet 11 and the right pallet 12 is provided with a clip 40 for holding the base connector 21.

By providing the clip 40, the connection between the pallet 10 and the base connector 21 can be further enhanced, increasing the degree of stability between the two. More preferably, a ball may be disposed between the clip and the left pallet 11 and the right pallet 12. The balls are rotatably disposed on the clip or on the pallet 10, and the clips hold the left pallet 11 and the right pallet 12 by balls, and the relative sliding between the clamp and the pallet 10 is further changed as the pallet rotates. Smooth.

Specifically, as shown in FIG. 9, the clip 40 includes an elastic clamping plate, one end of the clamping plate is coupled to the bottom of the pallet 10, and a clamping member is formed between the clamping plate and the pallet 10 for clamping the basic connector. The clamping groove of 21, the clamping plate abuts against the bottom of the base connector 21 under the action of the elastic force, and clamps the base connector 21 between the pallet 10 and the clamping plate.

Preferably, at the bottom of the plate-shaped base connector 21, a light limiting structure 41 such as a card slot or a card block is disposed at the end of the sliding track of the clip head, and the head of the clip 40 is snapped into the card slot or over the card block. Limiting the clip can be achieved, further locking the base connector and the pallet.

In the state of use, the transverse portions 10a of the two pallets 10 abut or remain at an interval of 10-40 cm.

In this embodiment, a support cantilever 30 is further included. The support cantilever 30 includes an arm set 32 and a clamping seat 31. The clamping seat 31 is pivotally connected to the lower end of the arm set 32 for clamping the connecting chair 50 of the chair panel 51; The upper end of the node group 32 is connected to a portion of the bottom portion of the transverse portion 10a near the outer edge;

Wherein, the arm set 32 includes two arm joints that are pivoted end to end. A corner limit structure for restricting the swing angle of the arm set 32 may be disposed between the arm set 32 and the clamp seat 31; a corner limit may be disposed between adjacent two arm sections of the arm set 32 structure.

And a corner limiting structure for defining the relative rotation angles of the brackets 10 and the base connecting member 21 is provided.

The corner limiting structure can adopt the prior art, such as a positioning groove and a positioning pin; the positioning pin tends to protrude into the positioning groove under the action of the elastic member, and one or several positioning grooves are disposed on the movement track of the positioning pin, When the positioning pin moves to the positioning groove portion, the positioning pin protrudes into the positioning groove under the action of the elastic member, thereby achieving a slight limit of the two components. When an external force is used to overcome the elastic member, the positioning pin is forced to exit the positioning groove. The two components can continue to rotate relative to each other.

As shown in FIG. 2, the pallet 10 is provided with attachments such as a pen holder 14, a mobile phone holder 16, and a water cup holder 15.

As shown in Figures 7 and 8, the embodiment further includes an intermediate transition member 70 disposed between the base connector and the armrest of the chair;

The intermediate transition piece 70 is provided with a first connecting hole 72 for connecting with the base connecting piece, and a second connecting hole 71 for connecting with the armrest of the chair;

The central axes of the second connecting holes 71 and the first connecting holes 72 are non-parallel for connecting the base connecting member to the armrest of the chair.

The second connecting hole 71 and the first connecting hole 72 respectively comprise two rows, which are respectively disposed on two sides of the armrest.

Wherein, the intermediate transition piece has a wedge shape as a whole and can be used to adjust the pitch angle of the pallet. The second connecting hole and the first connecting hole are arranged in a matrix to facilitate fitting to different specifications of the armrest, and adjusting the pitch angle of the pallet by adjusting the wedging depth.

In addition, the bottom and/or top surface of the intermediate transition piece is provided with a recess 73 which can be used for snapping onto the armrest of the chair. The bottom and/or top surface of the intermediate transition piece is preferably provided with a rubber layer. The front end of the cross section of the intermediate transition piece is a downwardly curved arc to fit the arcuate front end of the armrest.

The bracket provided by the invention has the advantages of simple structure and easy promotion, and the integrated board or the split keyboard can be placed on the pallet 10, and the human arm can be extended naturally to touch the keyboard, and the human body can be operated without the human body leaning forward. The back of the human body is supported, and the user does not feel tired when working or playing for a long time.

In addition, the pallet 10 can be horizontally rotated to facilitate the person to enter the seat, and can also adjust the opening and closing degree of the left pallet 11 and the right pallet 12 according to their own usage habits, thereby reducing the fatigue of long working and entertainment. Moreover, the pallet 10 can be adjusted in pitch, which is more convenient for the person to rely on the back of the chair during operation to reduce the degree of fatigue.

Example 2

This embodiment is basically the same as the structure of Embodiment 1, except that:

As shown in FIG. 5, the connecting structure includes: a first clamping plate 23, a second clamping plate 24, and a pressing bolt 25; the first clamping plate 23 and the second clamping plate 24 are erected at the bottom of the base connector 21 a clamping space for accommodating the armrest of the chair is disposed between the first clamping plate 23 and the second clamping plate 24;

The first clamping plate 23 and the second clamping plate 24 are provided with threaded through holes 24a;

The pressing bolt 25 protrudes from the outer side of the chair into the clamping space through the threaded through hole 24a of the second clamping plate 24, and the top of the pressing bolt abuts against the side of the armrest, thereby achieving a fixed connection with the armrest.

In order to include the armrest, the top of the compression bolt 25 is preferably provided with a compression block 26 against which the compression bolt abuts against the side of the armrest.

The threaded through holes in the first clamping plate 23 and the second clamping plate 24 are arranged in a matrix. Specifically, the first clamping plate 23 and the second clamping plate 24 are respectively strip-shaped; the bottom of the base connecting member 21 and the two sides of the armrest are respectively spaced apart from the first clamping plate 23 and the second clamping member. Holding board 24;

Each of the first holding plate 23 and the second holding plate 24 is provided with a plurality of threaded through holes spaced apart in the height direction.

The at least two compression bolts are selectively screwed into a plurality of threaded through holes according to the length of the armrest and the height of the fixing member 20, thereby fixing the fixing member 20 to the armrest.

Example 3

As shown in Figure 6, the fixing member 20 is provided at the bottom of the base connector 21 with a card slot 27 for snapping on both sides of the chair panel;

The fixing member 20 is divided into a left fixing member 20a disposed under the left pallet 11, and a right fixing member 20b disposed below the right pallet 12;

The left fixing member 20a and the right fixing member 20b are respectively engaged with the right and left sides of the seat panel through the card slot 27, and the left fixing member 20a and the right fixing member 20b are connected by a connecting member.

The connecting member is a length-adjustable telescopic rod below the seat panel, and both ends of the telescopic rod are detachably connected to the left fixing member 20a and the right fixing member 20b, respectively.

The telescopic rod includes a connecting rod 29, a connecting sleeve 28 and a locking member 28a; the connecting rod 29 is slidably inserted into the connecting sleeve 28, and the locking member 28a is used for fixedly connecting the two. Wherein, the locking member may be a screw member, and the screw member protrudes from the outside of the connecting sleeve into the connecting sleeve, and the top portion abuts against the connecting rod to lock the two.

Of course, the connector has many forms, for example, the connecting member is a tension spring disposed under the seat panel, and the two ends of the tension spring are respectively connected with the left fixing member 20a and the right fixing member 20b, tending to force the left fixing member 20a and The right fixing members 20b are respectively moved in the middle and abut against the two sides of the seat panel; or, the connecting member is a connecting rod below the seat panel, and the two ends of the connecting rod are detachably fixed to the left fixing member 20a and the right fixing member 20b, respectively. connection;

Further, in any of the above aspects, more preferably, the bracket further includes a pitch adjustment mechanism for adjusting a pitch angle at which the front end of the pallet 10 is lifted or dropped.

Wherein, the pitch adjustment mechanism is in many forms. For example, as shown in FIG. 7, the pitch adjustment mechanism is a wedge-shaped intermediate transition piece 70 having a triangular or trapezoidal cross section, and the intermediate transition piece 70 is interposed between the base connection member 21 and the armrest. The pitch angle of the pallet 10 can be achieved by adjusting the wedging depth of the intermediate transition piece 70, thereby being adapted to the usage habits of different users.

Of course, the pitch adjustment mechanism may also be an intermediate connector. The pallet 10 is pivotally connected to the base connector 21 via an intermediate connector, and the intermediate connector is hingedly coupled to the base connector 21 in a horizontally swingable manner. The pallet 10 can be tilted. Adjustably pivoted to the intermediate connector. A corner limiting structure is arranged between the intermediate connecting member and the pallet 10, for example, an arc guiding groove and a locking screw sliding in the guiding groove, the locking screw is loosened, the pitch angle of the pallet 10 is adjustable, and the locking is tightly locked. The bolt locks the pallet 10.

Example 4

As shown in FIGS. 10 to 12, the transverse portion 10a is provided at the front end of the longitudinal portion 10b so as to be turned over to the outside of the chair, and the transverse portion 10a is turned over and then withdrawn from the middle of the chair so that the person can sit in. Or leave the chair.

The top of the longitudinal portion 10b is provided with a sinking groove 10d for accommodating the transverse portion 10a, and the vertical portion 10b is provided with a lifting plate 10c which is vertically movable in the sinking groove, and the transverse portion 10a is reversible It is disposed on the lift plate 10c.

After the transverse portion is unfolded and the lifting plate is lifted up, the top surface of the transverse portion and the lifting plate is flush with the top surface of the longitudinal portion; the transverse portion is turned outward and then the lifting plate falls into the sinking groove, The bottom surface of the horizontal portion 10a is flush with the top surface of the vertical portion 10b.

Alternatively, as shown in FIG. 13, the transverse portion 10a is turned over in the range of 90-180, and the transverse portion 10a is inverted and stands upright or obliquely above the longitudinal portion 10b. A stopper mechanism for the angle at which the transverse portion is turned over is provided between the transverse portion and the longitudinal portion.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

A bracket, characterized in that it comprises a pallet and a fixing member;

The fixing member is disposed at a bottom of the pallet for positioning the pallet on an armrest portion of left and right sides of the chair;

The front end of the pallet is provided with a transverse portion;

The pallet includes a left pallet and a right pallet respectively disposed on the left and right sides of the chair;

In the state of use, the transverse portions of the left and right pallets extend from the left and right sides of the chair to the middle and are laterally placed on the front side of the human body, so that the left and right hands of the person naturally extend to the front of the body. And placed above the transverse portion for operation.
The bracket according to claim 1, wherein said left pallet and said right pallet are respectively movably disposed on respective corresponding fixing members for said transverse portion from said chair Exit in the middle to facilitate people sitting in or out of the chair.
The bracket according to claim 1, wherein the pallet is substantially L-shaped as a whole, and the pallet further includes a longitudinal portion, the transverse portion being reversibly disposed on the outer side of the chair. The front end, the transverse portion is turned over and then withdrawn from the middle of the chair to facilitate the person to sit in or out of the chair.
The bracket according to claim 2, wherein the fixing member comprises a base connector, and a rear end of the pallet is pivotally connected to the base connector by a pivot shaft;

Alternatively, the outer edge of the pallet is hingedly connected to the base connector by a hinge shaft, and the hinge shaft is parallel to the pallet, and the pallet can be turned over to both sides of the chair;

Or the tray is translatably disposed on the base connector by a limit guiding mechanism;

Alternatively, the pallet can be quickly disassembled on the base connector.
The bracket according to claim 4, further comprising an intermediate transition member disposed between said base connector and the armrest of the chair;

The intermediate transition piece is provided with at least one set of first connecting holes for connecting with the base connecting piece, and at least one set of second connecting holes for connecting with the armrest of the chair;

The central axes of the second connecting holes and the first connecting holes are non-parallel for connecting the base connecting member to the armrest of the chair.
The bracket according to claim 4, wherein said base connecting member is provided with a connecting structure for fixing the fixing member to both sides of the chair.
The bracket according to claim 6, wherein the connecting structure comprises a plurality of pressing plates, and the pressing plate is connected to the base connecting member by bolts and nuts, and the base connecting member and the pressing plate are respectively clamped from above and below The armrest of the chair, in turn, secures the base connector to the armrest of the chair.
The bracket according to claim 7, wherein the base connector bottom portion is longitudinally disposed with a plurality of sets of spaced threaded hole groups;

The threaded hole group includes threaded holes arranged in pairs, and bolts arranged in pairs are connected to the bottom of the base connecting member through screw holes; the bolts in each pair are symmetrically disposed on the left and right sides of the armrest.
The bracket according to claim 6, wherein the connecting structure comprises: a first clamping plate, a second clamping plate, and a pressing bolt; the first clamping plate and the second clamping plate are erected at a bottom of the base connector; a clamping space for accommodating the armrest of the chair is disposed between the first clamping plate and the second clamping plate;

a threaded through hole is disposed on the first clamping plate and/or the second clamping plate;

The pressing bolt protrudes from the outside into the clamping space through a threaded through hole of the first clamping plate or the second clamping plate, and the top of the pressing bolt abuts against the side of the handrail, thereby realizing the handrail Fixed connection.
The bracket according to claim 9, wherein a top of the pressing bolt is provided with a pressing block, and the pressing bolt abuts against the side of the armrest by the pressing block.
The bracket according to claim 6, wherein the fixing member is provided at the bottom of the base connector with a card slot for engaging at both side edges of the chair panel of the chair;

The fixing member is divided into a left fixing member disposed under the left tray, and a right fixing member disposed under the right tray;

The left fixing member and the right fixing member are respectively attached to the left and right sides of the seat panel through the card slot, and the left fixing member and the right fixing member are connected by a connecting member.
The bracket according to claim 11, wherein the connecting member is a tension spring disposed under the seat panel, and two ends of the tension spring are respectively connected to the left fixing member and the right fixing member. Facing to force the left fixing part and the right fixing part to move toward the middle and abut against both sides of the seat panel;

Alternatively, the connecting member is a connecting rod below the seat panel, and two ends of the connecting rod are detachably and fixedly connected to the left fixing member and the right fixing member respectively;

Alternatively, the connecting member is a length-adjustable telescopic rod below the seat panel, and two ends of the telescopic rod are respectively detachably connected to the left fixing member and the right fixing member; the telescopic rod includes a connecting rod, a connecting sleeve and a locking The connecting rod is slidably inserted into the connecting sleeve, and the locking member is used for fixedly connecting the two.
The bracket according to claim 4, wherein the bottoms of the left and right pallets are provided with clips for gripping the base connector.
The bracket according to claim 13, wherein the bottom of the base member is provided with a card slot or a card stop structure at the end of the sliding track of the clip head.
The bracket according to claim 13, wherein a ball is disposed between the clip and the left and right plates.
The bracket according to claim 4, further comprising a support cantilever, the support cantilever comprising an arm set and a holder, the holder being pivotally connected to the lower end of the set of arms for clamping Holding the chair panel; the upper end of the arm set is coupled to the transverse portion; wherein the arm set includes at least two arm joints that are pivoted end to end.
The bracket according to claim 1, further comprising a pitch adjustment mechanism for adjusting a pitch angle at which the front end of the pallet is raised or dropped.
The bracket according to claim 1, wherein the pallet is provided with a pen holder, a mobile phone holder, a keypad holder and/or a water cup holder.
The bracket according to claim 3, wherein a top portion of the longitudinal portion is provided with a sinking groove for accommodating the transverse portion, and the vertical portion is provided with a lifting plate in the sinking groove The transverse portion is reversibly disposed on the lifting plate; after the transverse portion is unfolded and the lifting plate is raised, the top surface of the transverse portion and the lifting plate are flush with the top surface of the longitudinal portion; After the portion is turned to the outside and the falling plate falls into the sinking groove, the bottom surface of the transverse portion is flush with the top surface of the longitudinal portion;

Alternatively, the transverse portion is turned over in the range of 90-180°, and the transverse portion is inverted or erected above the longitudinal portion.
A chair with a bracket according to any one of claims 1 to 19, characterized in that the left and right pallets are respectively disposed on the left and right sides of the chair by the fixing members;

The fixing member is detachably connected to the chair, or the fixing member is integrally provided with the chair.