Connecting rod structure and seat

Abstract

The utility model provides a connecting rod structure and a seat, which are used for solving the technical problem that the effect of a headrest is reduced due to the fact that part of existing seat headrests cannot achieve a better supporting effect. The connecting rod structure comprises a clamping piece, a shifting bead is arranged on the clamping piece, an adjustable connecting piece is arranged on the clamping piece in a rotating mode, the shifting bead is used for limiting rotation of the connecting piece, a stress rod is arranged at one end of the connecting piece in a rotating mode, the other end of the stress rod is used for fixedly arranging a headrest, the headrest is rotated relative to the stress rod, and the clamping piece is connected with the connecting piece in a rotating mode. The angle of the headrest is changed, the headrest is attached to the head of a user, the connecting piece is rotated relative to the clamping piece, the connecting piece drives the headrest to rotate, and the position of the headrest is adjusted.

Description

Technical Field

[0001] This utility model relates to the field of seat technology, and in particular to a linkage structure and a seat. Background Technology

[0002] A chair is a type of seating furniture that has a backrest and sometimes armrests.

[0003] In some existing chairs, the headrest is fixed to the top of the seat back. This fixed design can cause discomfort for people of different body types, as the user's head cannot properly conform to the headrest, thus reducing the headrest's effectiveness in relaxing the user's neck. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, this utility model provides a linkage structure and a seat to solve the technical problem that some existing seat headrests cannot provide good support, resulting in a decrease in the effectiveness of the headrest.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A linkage structure and a seat include a clamping member with a ball bearing and an adjustable connecting member rotatably mounted on the clamping member. The ball bearing is used to limit the rotation of the connecting member. A force-bearing rod is rotatably mounted at one end of the connecting member, and a headrest is fixed at the other end of the force-bearing rod.

[0007] Working principle:

[0008] Keeping the connector stationary, rotate the headrest. The headrest causes the force-bearing rod to rotate, and the force-bearing rod rotates relative to the connector, thus changing the angle of the headrest. Keeping the headrest, force-bearing rod, and connector stationary as a whole, rotate the connector. The connector rotates relative to the clamping part, and the ball bearing has a limiting effect. The headrest can move back and forth relative to the backrest.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] The force-bearing rod rotates easily relative to the connecting parts, and the user can easily adjust the angle of the headrest as needed when resting their head on it.

[0011] The connecting and clamping parts are locked by a ball joint, so the user needs to apply a large external force to adjust the connecting and clamping parts, thereby maintaining the stability of the connecting and clamping parts when the user leans on them. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0013] Figure 2This is a partial structural schematic diagram of an embodiment of the present utility model;

[0014] Figure 3 This is a schematic diagram of the structure from one perspective of one embodiment of the present utility model;

[0015] Figure 4 This is a schematic diagram of the structure from another perspective of an embodiment of the present utility model.

[0016] In the above figures: 10, first mounting hole; 11, second disc; 12, positioning hole; 13, friction block; 14, second cover; 15, arc-shaped rod; 16, force-bearing rod; 17, headrest; 18, second positioning block; 19, third mounting hole; 20, second mounting hole; 21, ball bearing; 22, first positioning block; 23, first cover; 24, first snap-fit ​​rod; 25, first mounting tube; 26, first positioning groove; 27, second positioning groove; 28, second mounting groove; 29, clamping end; 30, fourth mounting hole; 31, contact end; 32, first disc; 35, fifth mounting hole; 36, first mounting groove. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0018] Example 1:

[0019] like Figure 1 and Figure 2 As shown, a linkage structure and seat include a clamping member with a ball bearing 21. An adjustable connecting member is rotatably mounted on the clamping member. The ball bearing 21 restricts the rotation of the connecting member. The ball bearing 21 is a conventional technical means and therefore will not be described in detail in the specification. A force-bearing rod 16 is rotatably mounted at one end of the connecting member. The other end of the force-bearing rod 16 is used to fix a headrest 17. The headrest 17 is a closed ring structure with both ends protruding forward. In use, a mesh can be installed on the outside of the headrest 17, and the user rests their head on the mesh, i.e., their head rests on the middle of the headrest 17.

[0020] The clamping component includes a clamping end 29 and a contact end 31. The clamping end 29 has two fourth mounting holes 30. Two opposing first discs 32 are fixed on the contact end 31. The connecting part is rotatably disposed between the two first discs 32. The first discs 32 have a through first mounting hole 10. Two pawls 21 disposed on both sides of the first mounting hole 10 are embedded and fixed on the opposite end faces of the two first discs 32. The two pawls 21 on the same first disc 32 are symmetrically arranged.

[0021] Each of the two first discs 32 has a first mounting groove 36 on its opposite end face. Each first mounting groove 36 has two hollow first mounting tubes 25 fixed inside. The side wall of the first mounting groove 36 has a first positioning groove 26. Preferably, in this embodiment, there are two first positioning grooves 26, and the two first positioning grooves 26 are symmetrically arranged. A first cover 23 is provided inside the first mounting groove 36. Two first snap-fit ​​rods 24 extending into the corresponding first mounting tubes 25 are fixed at one end of the first cover 23 near the first disc 32. A first positioning block 22 that abuts against the first positioning groove 26 is fixed on the side of the first cover 23. The first positioning block 22 includes two blocks.

[0022] The connector includes a second disc 11 and an arc-shaped rod 15. The second disc 11 has a second mounting hole 20 through it, which communicates with the first mounting hole 10. A screw rod with a nut is rotatably inserted into the first mounting hole 10 and the second mounting hole 20. The other end of the screw rod is threaded with a nut. Several positioning holes 12 are provided on both sides of the second disc 11. There are six positioning holes 12, which are evenly divided into two groups and are provided on both sides of the second mounting hole 20. The second disc 11 is rotatably disposed between two first discs 32. A ball bearing 21 is engaged with one of the positioning holes 12. The other end of the arc-shaped rod 15 has two second mounting grooves 28 on both sides. The two second mounting grooves 28 communicate to form a third mounting hole 19. A second positioning groove 27 is fixed on the side of the second mounting groove 28. Preferably, in this embodiment, there are two second positioning grooves 27, which are symmetrically arranged. The second mounting groove 28 is provided with a second cover 14. The side of the second cover 14 is fixed with a second positioning block 18 corresponding to the second positioning groove 27. The side of the second cover 14 is fixed with a friction block 13, which includes four blocks. The end face of the friction block 13 abuts against the side of the positioning groove 27, further enhancing the stability of the second cover 14.

[0023] like Figure 4 As shown, one end of the force-bearing rod 16 is rotatably mounted on the arc-shaped rod 15. The force-bearing rod 16 has a fifth mounting hole 35 through it. The fifth mounting hole 35 is located between the two third mounting holes 19 and is connected to the third mounting holes 19. A screw rod with a nut is rotatably inserted into the fifth mounting hole 35 and the third mounting holes 19. The other end of the screw rod is threaded with a nut.

[0024] Example 2:

[0025] like Figure 1 and Figure 3As shown, a seat includes a linkage structure, wherein a clamping end is snapped onto the top of the seat back, and one side of the clamping end 29 having two fourth mounting holes 30 abuts against the back end of the seat back. The fourth mounting holes 30 are threaded holes, and two screws with nuts pass through the two fourth mounting holes 30 and abut against the back, thereby cooperating with the clamping end 29 to connect the entire linkage structure to the back.

[0026] Working principle:

[0027] Keeping the arc-shaped rod 15 and the headrest 17 from rotating, rotate the arc-shaped rod 15 so that the arc-shaped rod 15 and the contact end 31 rotate. The arc-shaped rod 15 drives the second disc 11 to rotate, and the second disc 11 drives the positioning hole 12 to rotate. The positioning hole 12 rotates so that the telescopic end of the dial bead 12 enters different positioning holes 12, thereby adjusting the position of the headrest 17 and adjusting the distance between the headrest 17 and the user.

[0028] Keeping the arc-shaped rod 15 and the first disc 32 stationary, rotate the headrest 17. The headrest 17 drives the force-bearing rod 16 to rotate, and the force-bearing rod 16 rotates relative to the arc-shaped rod 15.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A linkage structure, characterized in that, include: The clamping member is provided with a ball (21) and an adjustable connector is rotatably provided on the clamping member. The ball (21) is used to restrict the rotation of the connector. One end of the connector is rotatably provided with a force rod (16) and the other end of the force rod (16) is used to fix the headrest (17).

2. The linkage structure according to claim 1, characterized in that: The clamping member includes a clamping end (29) and a contact end (31). Two opposing first discs (32) are fixed on the contact end (31). The connecting member is rotatably disposed between the two first discs (32). The first discs (32) are provided with a first mounting hole (10). Two beaded balls (21) are embedded and fixed on both sides of the first mounting hole (10) on the opposite end faces of the two first discs (32).

3. A linkage structure according to claim 2, characterized in that: The clamping end (29) has two fourth mounting holes (30).

4. A linkage structure according to claim 2, characterized in that: Each of the two first disks (32) has a first mounting groove (36) on its opposite end face. Each of the first mounting grooves (36) has two hollow first mounting tubes (25) fixed inside. The side wall of the first mounting groove (36) has a first positioning groove (26). The first mounting groove (36) has a first cover (23). The end of the first cover (23) near the first disk (32) has two first snap-fit ​​rods (24) that extend into the corresponding first mounting tubes (25). The side of the first cover (23) has a first positioning block (22) that abuts against the first positioning groove (26).

5. A linkage structure according to claim 2, characterized in that: The connector includes a second disc (11) and an arc-shaped rod (15). The second disc (11) has a second mounting hole (20) through it. Both sides of the second disc (11) have several positioning holes (12). The second disc (11) is rotatably disposed between two first discs (32). The ball (21) is engaged with one of the positioning holes (12). The other side of the arc-shaped rod (15) has a second mounting groove (28). The two second mounting grooves (28) are connected to form a third mounting hole (19). The side of the second mounting groove (28) is fixed with a second positioning groove (27). The second mounting groove (28) is provided with a second cover (14). The side of the second cover (14) is fixed with a second positioning block (18) corresponding to the second positioning groove (27).

6. A linkage structure according to claim 5, characterized in that: One end of the force-bearing rod (16) is rotatably mounted on the arc-shaped rod (15). The force-bearing rod (16) has a fifth mounting hole (35) through it. The fifth mounting hole (35) is located between the two third mounting holes (19) and is connected to the third mounting holes (19).

7. A linkage structure according to claim 6, characterized in that: The second cover (14) has a friction block (13) fixed on its side.

8. A linkage structure according to claim 4, characterized in that: The first positioning groove (26) includes two, and the two first positioning grooves (26) are symmetrically arranged.

9. A linkage structure according to claim 5, characterized in that: The second positioning groove (27) includes two, and the second positioning groove (27) is symmetrically arranged.

10. A type of seat, characterized in that, Includes the linkage structure as described in any one of claims 1-9.

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