Position adjusting mechanism of chair headrest

Abstract

The utility model relates to the technical field of chair headrests, in particular to a position adjusting mechanism of a chair headrest, which comprises a supporting piece, a connecting piece and a connecting piece, the connecting piece is used for being connected with a chair back, an adjusting piece is further arranged on the connecting piece, and a first sliding mechanism is arranged between the adjusting piece and the connecting piece; wherein the first sliding mechanism comprises a sliding seat connected to the upper end of the connecting piece, a sliding groove is formed in the lower end face of the adjusting piece, and the sliding seat slides in the sliding groove. Position adjustment is carried out through the first sliding mechanism and / or the second sliding mechanism according to different headrests, various position adjustment requirements can be met, and the adjustment effect is good. And secondly, the overall adjusting structure is simple, assembly and operation are convenient, and the use requirements of different user groups are met.

Description

Technical Field

[0001] The utility model relates to the technical field of chair headrests, in particular to a position adjustment mechanism for a chair headrest. Background Art

[0002] In modern seat design, the headrest is an important component that has a significant impact on the comfort and health of the user. However, most existing seat headrests are fixed in design, which cannot adapt to the needs of different users in different postures. Since the headrest cannot be rotated or raised, the user cannot adjust the position of the headrest according to his or her height or preference, thus failing to ensure optimal support and comfort when using the seat for a long time. This limitation not only reduces the comfort of the seat, but also may have an adverse effect on the user's physical health over a long period of use.

[0003] Although some seats have adopted an adjustable headrest design in an attempt to meet the height and angle requirements of different users, such as using a rotational connection between the headrest and the support mechanism, the single rotational connection method has poor adaptability and is difficult to meet the different adjustment requirements of different user groups. Therefore, there is still room for improvement in the existing adjustable headrest design. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art such as poor adaptability of a single rotating connection mode, and proposes a position adjustment mechanism for a chair headrest.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A position adjustment mechanism for a chair headrest is designed, comprising:

[0007] A support member for connecting the pillow body;

[0008] and a connecting piece for connecting the chair back, wherein an adjusting piece is further arranged on the connecting piece, and a first sliding mechanism is arranged between the adjusting piece and the connecting piece;

[0009] The first sliding mechanism includes a sliding seat connected to the upper end of the connecting member, a sliding groove is provided on the lower end surface of the adjusting member, the sliding seat slides in the sliding groove, and a locking mechanism is provided between the sliding seat and the sliding groove.

[0010] Furthermore, a groove is formed at the bottom of the adjusting member, and a cover plate is detachably connected to the opening side of the groove;

[0011] A guide groove is provided on the end surface of the cover plate, and the guide groove is connected with the groove to form the slide groove.

[0012] Furthermore, the cover plate is fastened in the groove by bolts, and the cross section of the slide groove is a T-shaped structure.

[0013] Furthermore, the locking mechanism includes a plurality of latching teeth formed on the inner bottom surface of the groove, wherein one side of the latching teeth facing the pillow body is set as an inclined surface, and the other side is a plane, wherein a latching piece is rotatably connected to the top of the slide seat.

[0014] Furthermore, the clamping member includes a rotating block rotatably connected to the slide seat, a claw portion is arranged on the top of the rotating block, and a spring plug is arranged on the back end of the rotating block.

[0015] Furthermore, a notch is provided on the top of the sliding seat, and the rotating block is rotatably connected in the notch.

[0016] Furthermore, a first shaft and a second shaft are fixed on both sides of the rotating block, and a straight groove and a bending groove are respectively provided on both sides of the sliding seat. The first shaft rotates and slides in the straight groove, and the second shaft rotates and moves in the bending groove.

[0017] Furthermore, trigger blocks are fixed on the inner side of the groove and at both ends of the plurality of latch teeth, and the trigger blocks can move against the rotating block.

[0018] Furthermore, a lifting block is fixed to the lower end of the slide seat, and the lifting block slides with the connecting member via a second sliding mechanism.

[0019] Furthermore, the first sliding mechanism and the second sliding mechanism have the same structure.

[0020] The utility model proposes a position adjustment mechanism for a chair headrest, which has the beneficial effects of: the utility model can meet various position adjustment requirements by adjusting the position of different headrests through the first sliding mechanism and / or the second sliding mechanism; secondly, the overall adjustment structure is simple, easy to assemble and operate, and can meet the usage requirements of different user groups. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the slide structure of the first embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the latch structure of the first embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the first axis structure of the first embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the rotating block of the first embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the third embodiment of the present invention.

[0028] In the figure: 1, pillow body; 11, guide rod; 2, support member; 21, fixing plate; 3, connecting member; 4, adjusting member; 41, groove; 42, cover plate; 43, guide groove; 44, trigger block; 5, first sliding mechanism; 51, slide seat; 52, slide groove; 6, locking mechanism; 61, locking tooth; 62, clamping member; 621, rotating block; 622, claw part; 623, spring plug; 624, notch; 625, first axis; 626, second axis; 627, straight groove; 628, bending groove; 7, lifting block; 8, second sliding mechanism. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] Embodiment 1

[0031] Reference Figure 1-5 An embodiment of the utility model discloses a position adjustment mechanism for a chair headrest, the adjustment mechanism is used to adjust the position of the pillow body 1 to achieve better adjustment and adaptation requirements. In this embodiment, a single sliding mechanism is taken as an example, that is, the front and rear position of the pillow body 1 is adjusted. Specifically, the adjustment mechanism includes a support member 2 for connecting the pillow body 1. Preferably, the pillow body 1 and the support member 2 described in this embodiment are connected in a rotating manner to achieve angle adjustment requirements. Specifically, bolts can be used to tighten the adjustment angle or a friction plate can be used for damping the rotation. This structure is a conventional method for technicians in the field and will not be described in detail here.

[0032] and a connecting member 3 for connecting the backrest, an adjusting member 4 is further arranged on the connecting member 3, and a first sliding mechanism 5 is arranged between the adjusting member 4 and the connecting member 3;

[0033] The first sliding mechanism 5 includes a slide seat 51 connected to the upper end of the connecting member 3. Preferably, the slide seat 51 described in this embodiment is connected to the connecting member 3 in a rotational manner. The specific description can refer to the above-mentioned rotational manner. A slide groove 52 is provided on the lower end surface of the adjusting member 4. The slide seat 51 slides in the slide groove 52, and a locking mechanism 6 is provided between the slide seat 51 and the slide groove 52.

[0034] In some embodiments, a groove 41 is formed at the bottom of the adjusting member 4, and a cover plate 42 is detachably connected to the opening side of the groove 41;

[0035] A guide groove 43 is formed on the end surface of the cover plate 42 . The guide groove 43 is connected to the groove 41 and forms the slide groove 52 .

[0036] Specifically, the cover plate 42 in this embodiment is fastened in the groove 41 by bolts, and the cross-section of the slide groove 52 is a T-shaped structure, that is, the detachable connection mode of the cover plate 42 in this embodiment can realize the convenient assembly of the slide seat 51. Specifically, it should be noted that one end of the guide groove 43 in this embodiment extends to the side of the cover plate 42, and sliding grooves are provided on both sides of the slide seat 51. During assembly, the sliding groove on the slide seat 51 is first inserted and slid into the guide groove 43 on the cover plate 42, and then the cover plate 42 is installed and fixed to complete the transfer of the slide seat 51.

[0037] Furthermore, the locking mechanism 6 in this embodiment includes a plurality of latch teeth 61 formed on the inner bottom surface of the groove, wherein the side of the latch teeth 61 facing the pillow body 1 is set as an inclined surface, and the other side is a plane, wherein a snap-on component 62 is rotatably connected to the top of the slide seat 51, and the inclined surface is used as a guiding surface. When the pillow body 1 is pushed to move, the inclined surface will push the snap-on component 62 to rotate. Obviously, in this technology, technicians in the relevant field know that the straight surface design used in this embodiment is used to stop the reverse movement of the snap-on component 62, that is, when the pillow body 1 can achieve one-way unimpeded sliding, it will be hindered otherwise.

[0038] On the basis of the above-mentioned embodiment, the clamping member 62 in the utility model includes a rotating block 621 rotatably connected to the slide seat 51, and a claw portion 622 is arranged on the top of the rotating block 621, wherein a spring plug column 623 is arranged at the back end of the rotating block 621. The structure of the spring plug column 623 is the prior art and will not be elaborated here. Specifically, in this embodiment, the rotation design of the rotating block 621 is used to clamp with multiple clamping teeth 61 to complete the clamping positioning at multiple positions.

[0039] Furthermore, in this embodiment, a notch 624 is formed on the top of the slide seat 51 , and the rotating block 621 is rotatably connected in the notch 624 .

[0040] In some embodiments, a first shaft 625 and a second shaft 626 are fixed on both sides of the rotating block 621 in this embodiment, and a straight groove 627 and a bending groove 628 are respectively provided on both sides of the sliding seat 51. The first shaft 625 rotates and slides in the straight groove 627, and the second shaft 626 rotates and moves in the bending groove 628. The design of the straight groove 627 and the bending groove 628 can realize that the rotating block 621 can move a small distance.

[0041] In order to unlock the rotating block 621 and realize movable adjustment on both sides, in this embodiment, a trigger block 44 is fixed on the inner side of the groove 41 and at both ends of the plurality of latch teeth 61 , and the trigger block 44 can resist the movement of the rotating block 621 .

[0042] During specific operation, due to the design of the inclined surface of the latching teeth 61, the pillow body 1 can be directly pushed backward, and the pillow body 1 cooperates with the connecting adjusting member 4 to move. Due to the spring expansion and contraction of the spring plug 623, the rotating block 621 reciprocates and engages with the multiple latching teeth 61. At the same time, under the stop of the plane, the adjusting member 4 cannot move in the reverse direction.

[0043] When it is necessary to move in the opposite direction, the adjusting member 4 is first pushed back to the maximum limit position. At this time, the rotating block 621 rotates, and the second shaft 626 is at the lower end of the bending groove 628. When the adjusting member 4 moves further, the trigger block 44 at the rear end resists the movement of the rotating block 621, that is, the first shaft 625 and the second shaft 626 move inside the straight groove 627 and the bending groove 628 respectively. At this time, restricted by the bending groove 628, the rotating block 621 does not reset and is a certain distance away from the latch 61. In this state, the adjusting member 4 can be freely slid to the front. Under the resistance of the trigger block 44 at the front end, the second shaft 626 is separated from the bending groove 628. Under the elastic support of the spring plug 623, the latch 61 can be connected. After that, the adjusting member 4 can be pushed backward to cyclically adjust the position of the pillow body 1.

[0044] Embodiment 2

[0045] Reference Figure 6 In this embodiment, the same points as those in the first embodiment are not described in detail, and the difference is that: in this embodiment, a fixing plate 21 is fixedly installed on the front side of the support member 2, and a channel is formed between the fixing plate 21 and the end surface of the support member 2;

[0046] Among them, the middle part of the pillow body 1 is provided with a guide rod 11, and the guide rod 11 is arranged in the channel, wherein a plurality of positioning grooves are opened on the end surface of the guide rod, and positioning glass beads are fixed on the inner side of the fixing plate 21. Through the cooperation between the positioning glass beads and the positioning grooves, damping cooperation is achieved, thereby realizing the height-adjustable functional requirement of the pillow body 1.

[0047] Embodiment 3

[0048] Reference Figure 7 The similarities between this embodiment and the first embodiment are not repeated here. The difference is that two sliding mechanisms are designed in this embodiment to adjust the height and front and rear position of the pillow body 1. Specifically, in this embodiment, a lifting block 7 is fixed at the lower end of the slide seat 51, and the lifting block 7 slides with the connecting member 3 through a second sliding mechanism 8.

[0049] Specifically, in this embodiment, the first sliding mechanism 5 and the second sliding mechanism 8 have the same structure. The second sliding mechanism 8 is designed to cooperate with the lifting block 7 to achieve height adjustment adaptation of the pillow body 1 to meet the use requirements of more adjustment methods.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A position adjustment mechanism for a chair headrest, characterized in that: include: A support member (2) used for connecting the pillow body (1); and a connecting member (3) for connecting the chair back, wherein an adjusting member (4) is also arranged on the connecting member (3), and a first sliding mechanism (5) is arranged between the adjusting member (4) and the connecting member (3); The first sliding mechanism (5) comprises a sliding seat (51) connected to the upper end of the connecting member (3), a sliding groove (52) is provided on the lower end surface of the adjusting member (4), the sliding seat (51) slides in the sliding groove (52), and a locking mechanism (6) is provided between the sliding seat (51) and the sliding groove (52).

2. A position adjustment mechanism for a chair headrest according to claim 1, characterized in that: The bottom of the adjusting member (4) is provided with a groove (41), and a cover plate (42) is detachably connected to the opening side of the groove (41); A guide groove (43) is provided on the end surface of the cover plate (42), and the guide groove (43) is connected to the groove (41) to form the slide groove (52).

3. The position adjustment mechanism for a chair headrest according to claim 2, characterized in that: The cover plate (42) is fastened in the groove (41) by means of bolts, and the cross section of the slide groove (52) is a T-shaped structure.

4. The position adjustment mechanism for a chair headrest according to claim 2, characterized in that: The locking mechanism (6) comprises a plurality of locking teeth (61) formed on the inner bottom surface of the groove, wherein one side of the locking teeth (61) facing the pillow body (1) is arranged as an inclined surface, and the other side is arranged as a flat surface, wherein a locking member (62) is rotatably connected to the top of the sliding seat (51).

5. The position adjustment mechanism for a chair headrest according to claim 4, characterized in that: The clamping member (62) comprises a rotating block (621) rotatably connected to the sliding seat (51), a claw portion (622) is arranged on the top of the rotating block (621), and a spring plug (623) is arranged at the back end of the rotating block (621).

6. The position adjustment mechanism for a chair headrest according to claim 5, characterized in that: A notch (624) is provided on the top of the sliding seat (51), and the rotating block (621) is rotatably connected in the notch (624).

7. The position adjustment mechanism for a chair headrest according to claim 5, characterized in that: A first shaft (625) and a second shaft (626) are fixed on both sides of the rotating block (621), and a straight groove (627) and a bending groove (628) are respectively provided on both sides of the sliding seat (51), the first shaft (625) rotates and slides in the straight groove (627), and the second shaft (626) rotates and moves in the bending groove (628).

8. A position adjustment mechanism for a chair headrest according to claim 5, 6 or 7, characterized in that: A trigger block (44) is fixed on the inner side of the groove (41) and at both ends of the plurality of latch teeth (61), and the trigger block (44) can move against the rotating block (621).

9. The position adjustment mechanism for a chair headrest according to claim 1, characterized in that: A lifting block (7) is also fixed at the lower end of the slide seat (51), and the lifting block (7) slides with the connecting member (3) via a second sliding mechanism (8).

10. The position adjustment mechanism for a chair headrest according to claim 9, characterized in that: The first sliding mechanism (5) and the second sliding mechanism (8) have the same structure.

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