Headrest adjusting structure

Abstract

The headrest adjusting structure comprises an inserting rod, a lining, a supporting framework, a vertical rod, a bending part, a circular ring part and a through hole, the inserting rod is an integrated inserting rod, and during installation, a user only needs to insert the lining into the vertical rod, then insert the vertical rod into the supporting framework, clamp the inserted lining into the upper portion of the supporting framework, insert the lining from the bottom of the vertical rod, move the lining to the lower portion of the supporting framework and clamp the lining into the supporting framework. Therefore, the insertion rod is connected with the supporting framework; therefore, the assembly error caused by sectional installation of the original insertion rod is eliminated, and the accuracy of the same height between the first notches in the two vertical rods is improved while the insertion rod is convenient to install; therefore, the problem that the locking and releasing of the push rod structure on the two first notches at the same height are influenced by the precision problem at the same height is solved; and the clamping phenomenon occurring when the inserting rod is adjusted up and down is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile headrest assembly, specifically relates to a headrest adjusting structure. BACKGROUND

[0002] In the automobile headrest assembly process, because the plug-in rod usually is equipped with the bending structure, and general design is on the vertical pole of the plug-in rod, therefore, in order to facilitate the connection of the plug-in rod and the support framework, the existing headrest plug-in rod is generally connected by two vertical poles and a horizontal pole, when installing, first, several bushings are inserted into the support framework horizontally, then the vertical pole is inserted into the bushing along the vertical direction upwards, then the horizontal pole is connected with the top of the two vertical poles, wherein, the bushing and the vertical pole are interference fit, and the vertical pole is equipped with the first gap, the push rod structure realizes the activity and the fixation of the plug-in rod by the limiting and the release of the first gap, thereby realizing the connection of the headrest plug-in rod, but this kind of structure of dividing the plug-in rod into three sections, because there is assembly error, so the same height first gap on the two vertical poles has the precision problem, this can influence the locking and the release of the two first gaps of the same height of the push rod structure, thereby causing the jam of the plug-in rod when adjusting up and down. SUMMARY

[0003] The utility model aims at designing a headrest adjusting structure to solve the problem in the background art, in order to realize the above-mentioned purpose, the utility model provides the following technical scheme: including plug-in rod, bushing and support framework, the plug-in rod includes the horizontal pole and two vertical poles with the same height first gap of integrative forming, the vertical pole is equipped with the bending part, the bushing is equipped with the deformable ring part, the vertical pole and the ring part are interference fit, the bushing is inserted from the bottom of the vertical pole and moves to the both ends of the support framework along the extension direction of the vertical pole, the bushing is clamped in the both ends of the support framework along the direction of the vertical pole, the support framework is equipped with the through hole for the vertical pole insertion, the size of the through hole is not less than the maximum width of the bending part.

[0004] Further, the plug-in rod is a hollow pipe, and the connection between the horizontal pole and the vertical pole is provided with a wiring port.

[0005] Further, the support framework is provided with a first slot, a plurality of first gaps are circumferentially arranged on the first slot, a protruding block is arranged on the bushing and matched with the first slot, and a first elastic buckle is arranged on the end of the protruding block and overlapped with the first gap.

[0006] Further, the top of the first slot is provided with a second slot, and the bushing comprises a protruding platform fixedly connected with the protruding block and matched with the second slot.

[0007] Further, the circular ring part is an elastic annular thin wall, the elastic annular thin wall comprises a fixed ring and an elastic ring, a groove for deforming the fixed ring is arranged between the fixed ring and the protruding block, the elastic ring is fixedly connected with the protruding block through a connecting plate, and a circular ring hole in interference fit with the inserting rod is formed between the fixed ring and the elastic ring.

[0008] Further, a third notch is arranged on the protruding block near both sides of the fixed ring, and the third notch penetrates the protruding block and the boss.

[0009] Further, gaps exist between both ends of the elastic ring and the fixed ring.

[0010] Further, a rib plate is arranged on the connecting plate, and both side ends of the rib plate are connected with the elastic ring and the protruding block respectively.

[0011] Further, a positioning sleeve is fixedly connected on the protruding block, and a fourth notch in gap fit with the positioning sleeve is fixedly connected on the first notch.

[0012] Further, a plurality of ribs are arranged on the side wall of the protruding block.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the inserting rod in the utility model is an integrated inserting rod, when installing, only need to insert the bushing into the vertical rod first, then insert the vertical rod into the support framework, and then insert the bushing into the upper part of the support framework, then insert the bushing from the bottom of the vertical rod into the lower part of the support framework and connect into the support framework, so as to realize the connection between the inserting rod and the support framework; therefore, the utility model eliminates the assembly error of the original inserting rod when installing in sections, facilitates the installation of the inserting rod, improves the precision of the same height between the first notches of the two vertical rods, and eliminates the problem that the push rod structure affects the locking and releasing of the two first notches of the same height due to the precision problem of the same height; and effectively prevents the jamming phenomenon of the inserting rod when adjusting up and down. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Fig. 1 It is the overall structural schematic diagram of the utility model;

[0016] Fig. 2 It is the enlarged schematic diagram of the first notch in the support framework;

[0017] Fig. 3 The overall structure diagram of the bushing.

[0018] 1, wiring port; 2, sound; 3, bushing; 4, support framework; 5, transmission line; 6, bending part; 7, vertical rod; 8, horizontal rod; 9, plug rod; 10, second notch; 11, fourth notch; 12, first notch; 13, first gap; 14, through hole; 15, positioning sleeve; 16, first elastic buckle; 17, protruding block; 18, recess; 19, fixing ring; 20, elastic ring; 21, boss; 22, third notch; 23, rib; 24, annular part; 25, rib plate. DETAILED DESCRIPTION

[0019] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows by combining with the drawings and preferred embodiments.

[0020] Embodiment: please refer to Figs. 1-3The utility model provides a headrest adjusting structure, including plug rod 9, bush 3 and support framework 4, plug rod 9 includes integral moulding horizontal rod 8 and two vertical rods 7 with same height first gap 13, is equipped with bending part 6 on vertical rod 7, is equipped with deformable circular ring part 24 on bush 3, and vertical rod 7 and circular ring part 24 are interference fit, and bush 3 is inserted from the bottom of vertical rod 7 and moves to the both ends of support framework 4 along the extension direction of vertical rod 7, and bush 3 is clamped in the both ends of support framework 4 along the direction of vertical rod 7, and support framework 4 is equipped with the through -hole 14 of inserting vertical rod 7, and the size of through -hole 14 is not less than the maximum width of bending part 6, wherein the accuracy of the same height between first gap 13 is determined by machining error, higher than the assembly error of tradition, thereby it is favorable to eliminate the problem of the locking and releasing of the push rod structure to the two first gaps 13 of the same height caused by the progress problem, it is favorable to prevent the jam of plug rod 9 when adjusting up and down, four bushings 3 are clamped on the support framework 4, two bushings 3 are interference fit on a vertical rod 7, so in the process of installing plug rod 9, first insert bush 3 into plug rod 9 (when passing through bending part 6, bush 3 will be slightly deformed to facilitate the passage of bush 3 through bending part 6, and the interference amount between bush 3 and plug rod 9 is small, so that bush 3 will move on plug rod 9 when subjected to a certain size and along the extension direction of plug rod 9, thereby it can satisfy the sliding of bush 3 on plug rod 9 while preventing the shaking of plug rod 9 during use), then insert two vertical rods 7 into the through -hole 14 of support framework 4 from top to bottom, when bending part 6 also penetrates out of support framework 4, clamp two bushings 3 into support framework 4, thereby realizing the installation of the upper bushings 3 of support framework 4, then insert the remaining two from the bottom of vertical rod 7 into the lower part of support framework 4 and clamp into support framework 4, thereby realizing the connection of plug rod 9 and support framework 4, and support framework 4 is fixedly connected with the headrest, so when moving support framework 4, the headrest will move, thereby realizing the adjustment of the height of the headrest, so the utility model eliminates the assembly error caused by the segmented installation of the original plug rod 9, facilitates the installation of plug rod 9, improves the accuracy of the same height between the first gaps 13 of the two vertical rods 7, thereby eliminating the problem of the locking and releasing of the push rod structure to the two first gaps 13 of the same height caused by the accuracy problem of the same height, and effectively preventing the jam phenomenon of plug rod 9 when adjusting up and down.

[0021] In this embodiment, the insertion rod 9 is a hollow tube, and a wiring port 1 is provided at the connection between the horizontal rod 8 and the vertical rod 7, which facilitates the connection of the transmission line 5 from the inside of the seat to the inside of the headrest, and then to the speaker 2 inside the headrest, thereby improving the practicality of the headrest; the support frame 4 is provided with a first slot 12, and the first slot 12 is provided with several first notches 13 circumferentially. The bushing 3 is provided with a protrusion 17 that mates with the first slot 12, and the end of the protrusion 17 is provided with a first elastic buckle 16 that overlaps with the first notch 13, thereby realizing the connection between the bushing 3 and the support frame 4; and the top of the first slot 12 is provided with a second slot 10, and the bushing 3 includes The boss 21, which is fixed to the protrusion 17 and mates with the second slot 10, facilitates the connection of the bushing 3 and the positioning of the bushing 3 during installation. The annular portion 24 is an elastic annular thin-walled structure, which includes a fixed ring 19 and an elastic ring 20. A groove 18 for deformation of the fixed ring 19 is provided between the fixed ring 19 and the protrusion 17. The elastic ring 20 is fixed to the protrusion 17 through a connecting plate. An annular hole that is interference-fitted with the insertion rod 9 is formed between the fixed ring 19 and the elastic ring 20, thereby enabling the annular portion 24 to undergo minor deformation, thus making it feasible for the annular portion 24 to move at the bend 6 in the insertion rod 9. A third groove 22 is provided on the protrusions 17 near both sides of the fixed ring 19. The third groove 22 passes through the protrusion 17 and the boss 21. There is a gap between the two ends of the elastic ring 20 and the fixed ring 19, thus enabling the ring part 24 to deform, which is beneficial to the deformation of the ring part 24. A rib 25 is provided on the connecting plate. The two ends of the rib 25 are respectively connected to the elastic ring 20 and the protrusion 17, thereby effectively preventing the elastic ring 20 from breaking. In addition, the height of the rib 25 is lower than the height of the elastic ring, thereby preventing the rib from affecting the deformation of the end face of the elastic ring 20. A positioning sleeve 15 is fixedly connected to the protrusion 17. The first groove 1 The bushing 3 is fixedly connected to the fourth slot 11, which is in clearance fit with the positioning sleeve 15. This helps to prevent the bushing 3 from moving horizontally, thereby improving the connection quality between the bushing 3 and the support frame 4. The top of the positioning sleeve 15 is conical, which is conducive to the installation of the protrusion 17. The side wall of the protrusion 17 is provided with several ribs 23. The ribs 23 are chamfered along the vertical direction of the vertical rod 7. This allows the bushing 3 to be inserted into the support frame 4 while the protrusion 17 is squeezed inward, thereby deforming the ring part 24 and further clamping the vertical rod 7. This improves the clamping between the vertical rod 7 and the support frame 4, thus improving the stability of the connection between the vertical rod 7 and the support frame 4.

[0022] The working principle of this embodiment is as follows: During installation, simply insert the two bushings 3 into the two vertical rods 7 respectively, and then insert the vertical rods 7 into the support frame 4. After the bending part 6 has also penetrated the support frame 4 for a certain distance, snap the two bushings 3 that have been inserted into the upper part of the support frame 4. Then, insert the other two bushings 3 from the bottom of the vertical rods 7 respectively, move them to the lower part of the support frame 4, and then snap them into the lower part of the support frame 4, thereby realizing the connection between the insert rod 9 and the support frame 4. In addition, the insert rod 9 in this utility model is an integral insert rod 9; thus eliminating the assembly error caused by the segmented installation of the original insert rod 9, facilitating the installation of the insert rod 9, and improving the accuracy of the same height between the first notches 13 on the two vertical rods 7, thereby eliminating the problem of locking and releasing the push rod structure to the two first notches 13 at the same height due to the accuracy of the same height; effectively preventing the jamming phenomenon that occurs when the insert rod 9 is adjusted up and down.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A headrest adjustment structure characterized by: The support frame (4) is provided with a first slot (12), and a plurality of first notches (13) are circumferentially arranged on the first slot (12); the bushing (3) is provided with a protrusion (17) matched with the first slot (12), and an end of the protrusion (17) is provided with a first elastic buckle (16) overlapped with the first notches (13).

2. The headrest adjustment structure according to claim 1, characterized by: The insertion rod (9) is a hollow pipe, and a wire port (1) is arranged at a connection position of the horizontal rod (8) and the vertical rod (7).

3. The headrest adjustment structure according to claim 1, characterized by: The support frame (4) is provided with a first slot (12), and a plurality of first notches (13) are circumferentially arranged on the first slot (12); the bushing (3) is provided with a protrusion (17) matched with the first slot (12), and an end of the protrusion (17) is provided with a first elastic buckle (16) overlapped with the first notches (13).

4. The headrest adjustment structure according to claim 3, characterized by: The top of the first slot (12) is provided with a second slot (10), and the bushing (3) comprises a boss (21) fixedly connected with the protrusion (17) and matched with the second slot (10).

5. The headrest adjustment structure according to claim 4, characterized by: The annular portion (24) is an elastic annular thin wall, the elastic annular thin wall comprises a fixed ring (19) and an elastic ring (20), a groove (18) for deforming the fixed ring (19) is arranged between the fixed ring (19) and the protrusion (17), the elastic ring (20) is fixedly connected with the protrusion (17) through a connecting plate, and a circular ring hole matched with the insertion rod (9) is formed between the fixed ring (19) and the elastic ring (20).

6. The headrest adjustment structure according to claim 5, characterized by: The protrusion (17) near both sides of the fixed ring (19) is provided with a third slot (22) penetrating through the protrusion (17) and the boss (21).

7. The headrest adjustment structure according to claim 5, characterized by: Gaps exist between both ends of the elastic ring (20) and the fixed ring (19).

8. The headrest adjustment structure according to claim 5, characterized by: The connecting plate is provided with a rib plate (25), and both sides of the rib plate (25) are respectively connected with the elastic ring (20) and the protrusion (17).

9. The headrest adjustment structure according to claim 3, characterized by: The protrusion (17) is fixedly connected with a positioning sleeve (15), and the first slot (12) is fixedly connected with a fourth slot (11) matched with the positioning sleeve (15) in a clearance fit manner.

10. The headrest adjustment structure according to any one of claims 3 to 9, characterized in that: A plurality of rib strips (23) are arranged on the side wall of the protrusion (17).

Images