Headrest assembly of seat and seat
By setting up a connecting arm and rotating joint between the headrest and the bracket of the seat, combined with the locking member and the limiting structure, the problem of small adjustment range of the headrest is solved, and the multi-angle and height adjustment of the headrest is achieved, and the comfort of the seat is improved.
Patent Information
- Application Number
- CN202422291902.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-19
AI Technical Summary
When adjusting the headrest of traditional seats, the angle adjustment range is small, making it difficult to adjust the support surface angle and height of the headrest to the best state, affecting the comfort of the seat.
A connecting arm is provided between the headrest and the bracket, and connected to the headrest and bracket through a rotating joint, the multi-angle adjustment of the headrest is achieved using the locking member and the limiting structure, and combined with the adjustable bracket height, the adjustment range of the headrest is increased.
The flexible adjustment of the angle and height of the headrest is achieved, which can better fit the user's head and neck curve and improve the comfort of the seat.
Smart Images
Figure CN223081348U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of seats, in particular to a headrest assembly and a seat of a seat. Background Art
[0002] Traditional seats do not have a headrest on the backrest, and cannot provide support for the head and neck of the user, resulting in poor comfort of the seat. In order to improve the defects of traditional seats, some existing office seats, e-sports seats, etc. usually have a headrest installed on the top of the backrest bracket of the seat. Moreover, the headrests of some seats are installed on the top of the backrest bracket in an adjustable manner to change the angle of the headrest support surface, so as to adapt to the body shape of the user and different sitting postures. For example, when the user is in a lying state, the headrest can be rotated forward so that the support surface of the headrest is flush or substantially flush with the back of the user's head. However, when the existing seat headrest is adjusted, the range of angle adjustment is small, and it is difficult to adjust the angle of the headrest support surface and the height of the headrest to the best state. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a headrest assembly and a seat of a seat, so that the angle of the headrest support surface and the height of the headrest can be adjusted to the best state.
[0004] To achieve the above purpose, the utility model adopts the following technical scheme:
[0005] The headrest assembly of the seat includes a headrest, a connecting arm, and a bracket;
[0006] A rotating joint is respectively arranged at the connection between the headrest and the connecting arm and at the connection between the connecting arm and the bracket;
[0007] The rotating joint includes a first connecting seat, a second connecting seat, a rotating shaft, and a locking member. The rotating shaft connects the first connecting seat and the second connecting seat together so that the two can rotate relative to each other, and the locking member is used to lock the first connecting seat and the second connecting seat after they rotate relative to each other to a predetermined angle to limit the freedom of relative rotation between the two.
[0008] Preferably, two connecting ears are arranged on the second connecting seat, a receiving space is formed between the two connecting ears, the first connecting seat is placed in the receiving space and located between the two connecting ears, and the rotating shaft passes through the two connecting ears and the first connecting seat to pivotally connect the first connecting seat and the second connecting seat together.
[0009] Preferably, a plurality of latching grooves are provided on the peripheral wall of the accommodating space on the second connecting seat, and the plurality of latching grooves are arranged around the central axis of the rotating shaft. The locking member includes a shell, a bead and an elastic member fixed on the first connecting seat. The shell is a hollow structure and an opening is formed at one end thereof facing the peripheral wall of the accommodating space. The bead and the elastic member are both placed in the shell. The elastic member is used to apply an elastic stress to the bead so that a part of the bead protrudes from the opening and is latched in one of the latching grooves.
[0010] Preferably, a mounting groove is provided on the outer edge surface of the first connecting seat, the shell is embedded in the mounting groove and fixedly matched with the first connecting seat, and the elastic member is a spring, one end of the spring abuts against the end of the shell away from its opening, and the other end abuts against the inner side of the bead.
[0011] Preferably, a limiting groove is provided on the first connecting seat, and a limiting protrusion embedded in the limiting groove is provided on the peripheral wall of the accommodating space. The limiting protrusion moves between the two ends of the limiting groove to limit the maximum angle of rotation of the first connecting seat and the second connecting seat around the rotating axis.
[0012] Preferably, a first axial hole is provided on the first connecting seat, and a second axial hole is provided on each of the two connecting ears. The second axial holes of the two connecting ears are coaxially arranged, and the rotating shaft crosses the first axial hole and the two second axial holes. A flange is respectively provided at both ends of the rotating shaft, and the two flanges respectively press the two connecting ears toward the first connecting seat.
[0013] Preferably, a step surface is provided in the second axial hole, a bushing is inserted into the second axial hole, and the outer end of the bushing is provided with a convex edge pressed against the step surface. The rotating shaft includes two connecting parts, and the inner ends of the two connecting parts pass through the two bushings respectively and are fixed together in the first axial hole by screwing. The two flanges are respectively located at the outer ends of the two connecting parts and are respectively pressed against the outer sides of the two convex edges.
[0014] Preferably, the two first connection seats of the two rotating joints are respectively arranged at the two ends of the connecting arm;
[0015] Or, the two second connection seats of the two rotating joints are respectively arranged at the two ends of the connecting arm;
[0016] Alternatively, the first connection seat of one of the rotational joints is arranged at one end of the connecting arm, and the second connection seat of the other rotational joint is arranged at the other end of the connecting arm.
[0017] A seat comprises the headrest assembly of the seat mentioned above.
[0018] Preferably, the seat comprises a backrest, a mounting seat is fixedly mounted on the top of the backrest, and the bracket is connected to the mounting seat in a manner that it can be adjusted up and down.
[0019] Compared with the prior art, the beneficial effects of the present invention are:
[0020] The present utility model provides a connecting arm between a headrest and a bracket. The connecting arm is respectively connected to the headrest and the bracket through a rotating joint. By adjusting the rotation angles of the two rotating joints, the adjustment of the headrest can be realized, and the adjustment range of the headrest angle can be increased. At the same time, when the connecting arm is at different inclination angles, the up-and-down position and the front-and-back position of the headrest can be changed. When the user is lying flat or in any other posture, not only can the supporting surface of the headrest better fit the curves of the user's head and neck, but also the height of the headrest can be changed, so that the headrest can be adjusted to the best supporting state, improving the comfort of the seat. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a schematic structural view of the present utility model;
[0022] Figure 2 is a cross-sectional view of the present utility model;
[0023] Figure 3 is Figure 1 a schematic structural view of the connecting arm in
[0024] Figure 4 is Figure 1 an enlarged view of part A in
[0025] Wherein: 10, headrest; 20, connecting arm; 30, bracket; 40, first connecting seat; 401, first shaft hole; 402, outer edge surface; 41, installation groove; 42, limiting groove; 50, second connecting seat; 51, connecting ear; 511, second shaft hole; 512, stepped surface; 52, accommodating space; 521, peripheral wall; 522, clamping groove; 53, limiting protrusion; 61, first connecting member; 62, second connecting member; 63, bushing; 631, convex edge; 70, locking member; 71, housing; 72, bead; 73, spring; 80, mounting seat; 90, backrest. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] Next, in combination with the drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments. Except as otherwise specified, the materials and equipment used in this embodiment can be purchased from the market. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.
[0027] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically and precisely defined.
[0028] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense. For example, it can be a fixed connection, or connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0029] As Figure 1 、 2 、3, and 4 show a headrest assembly of a seat of the present utility model, which includes a headrest 10, a connecting arm 20, and a bracket 30. A rotating joint is respectively provided at the connection between the headrest 10 and the connecting arm 20 and at the connection between the connecting arm 20 and the bracket 30. The two rotating joints enable the headrest 10 and the connecting arm 20 to have a relative rotational freedom, and enable the connecting arm 20 and the bracket 30 to have a relative rotational freedom. The rotating joint includes a first connecting seat 40, a second connecting seat 50, a rotating shaft, and a locking member 70. The rotating shaft pivotally connects the first connecting seat 40 and the second connecting seat 50 together, enabling the first connecting seat 40 and the second connecting seat 50 to have a relative rotational freedom. The central axes of the rotating shafts in the two rotating joints are parallel or substantially parallel. The locking member 70 is disposed between the first connecting seat 40 and the second connecting seat 50. After the first connecting seat 40 and the second connecting seat 50 rotate relative to each other to a predetermined angle, the first connecting seat 40 and the second connecting seat 50 are locked by the locking member 70, limiting the relative rotational freedom of the first connecting seat 40 and the second connecting seat 50. One of the rotating joints is provided at the connection between the headrest 10 and the connecting arm 20, enabling the headrest 10 to rotate relative to the connecting arm 20, and the other rotating joint is provided at the connection between the connecting arm 20 and the bracket 30, enabling the connecting arm 20 to rotate relative to the bracket 30. While the connecting arm 20 rotates, it can drive the headrest 10 to rotate.
[0030] In the present utility model, a connecting arm 20 is provided between the headrest 10 and the bracket 30. The connecting arm 20 is respectively connected to the headrest 10 and the bracket 30 through a rotating joint. By adjusting the rotation angles of the two rotating joints, the adjustment of the headrest 10 can be realized, and the adjustment range of the angle of the headrest 10 can be increased. At the same time, when the connecting arm 20 is at different inclination angles, the up-and-down position and the front-and-back position of the headrest 10 can be changed. When the user is lying flat or in any other posture, not only can the supporting surface of the headrest 10 be better fitted to the curves of the user's head and neck, but also the height of the headrest 10 can be changed, so that the headrest can be adjusted to the best supporting state, improving the comfort of the seat.
[0031] In a preferred embodiment, two oppositely arranged connecting lugs 51 are provided on the second connecting seat 50, and a receiving space 52 is formed between the two connecting lugs 51. The first connecting seat 40 is placed in the receiving space 52, so that the first connecting seat 40 is located between the two connecting lugs 51. A rotating shaft passes through the two connecting lugs 51 and the first connecting seat 40, pivotally connecting the first connecting seat 40 and the second connecting seat 50 together. The peripheral wall 521 of the receiving space 52 is in an arc structure to avoid the first connecting seat 40. A plurality of clamping slots 522 are provided on the peripheral wall 521, and the plurality of clamping slots 522 are arranged around the central axis of the rotating shaft. The locking member 70 includes a housing 71, a bead 72, and a spring 73. The housing 71 is fixed on the first connecting seat 40. The housing 71 is of a hollow structure and an opening is formed at one end thereof facing the peripheral wall 521 of the receiving space 52. Both the bead 72 and the spring 73 are located inside the housing 71. One end of the spring 73 abuts against the end of the housing 71 away from its opening, and the other end of the spring 73 abuts against the inner side of the bead 72. Under the elastic stress provided by the spring 73, a part of the bead 72 protrudes from the opening of the housing 71, and then the protruding part of the bead 72 can be embedded into one of the clamping slots 522. In this way, a part of the bead 72 is placed in the clamping slot 522 and a part is placed inside the housing 71 fixed on the first connecting seat 40, and the first connecting seat 40 and the second connecting seat 50 can be locked by using the bead 72. When it is necessary to adjust the angle between the first connecting seat 40 and the second connecting seat 50, an external force is applied to the first connecting seat 40 or the second connecting seat 50, and the side of the clamping slot 522 presses the bead 72, causing the bead 72 to contract towards the inside of the housing 71 and compress the spring 73. The bead 72 is gradually completely received inside the housing 71. When the first connecting seat 40 and the second connecting seat 50 are rotated to a predetermined angle, the bead 72 moves towards the peripheral wall 521 under the elastic stress of the spring 73 and the bead 72 falls into the clamping slot 522 at the corresponding position. At this time, the bead 72 locks the first connecting seat 40 and the second connecting seat 50 again, keeping their relative positions unchanged. An installation groove 41 is provided on the outer edge surface 402 of the first connecting seat 40 described above, and the housing 71 is embedded inside the installation groove 41 and fixedly cooperates with the first connecting seat 40. The spring 73 described above is used to provide an elastic stress for pressing the bead 72. In fact, in other embodiments, the spring 73 can also be replaced by other elastic elements. For example, the elastic element can be an elastic rubber block, a spring piece, etc.
[0032] In another preferred embodiment, in order to prevent the first connection seat 40 and the second connection seat 50 from rotating excessively when being adjusted, the utility model is provided with a limiting groove 42 on the first connection seat 40, and a limiting protrusion 53 is arranged on the peripheral wall 521 of the accommodating space 52. The limiting protrusion 53 is embedded into the limiting groove 42. The limiting protrusion 53 can move between the two end parts of the limiting groove 42. When the limiting protrusion 53 moves to the end part of the limiting groove 42, the limiting protrusion 53 is blocked by the end part of the limiting groove 42, thereby limiting the maximum angle of rotation of the first connection seat 40 and the second connection seat 50 around the rotating shaft.
[0033] A first shaft hole 401 penetrating through both side surfaces thereof is provided on the first connection seat 40. A second shaft hole 511 is provided on each of the two connecting ears 51. The second shaft holes 511 of the two connecting ears 51 are coaxially arranged. After the first connection seat 40 is placed in the accommodating space 52, the first shaft hole 401 is aligned with the two second shaft holes 511. The rotating shaft passes through the first shaft hole 401 and the two second shaft holes 511. Flanges are respectively arranged at both ends of the rotating shaft. The two flanges respectively press the two connecting ears 51 towards the first connection seat 40, thereby connecting the first connection seat 40 and the second connection seat 50 together. A stepped surface 512 is arranged inside the second shaft hole 511. A bushing 63 is inserted into the second shaft hole 511. A convex edge 631 pressing on the stepped surface 512 is arranged at the outer side end of the bushing 63. The bushing 63 is made of wear-resistant material. The rotating shaft includes a first connecting member 61 and a second connecting member 62. After the inner side ends of the first connecting member 61 and the second connecting member 62 respectively pass through the two bushings 63, they are fixed together in a threaded connection manner inside the first shaft hole 401. The two flanges are respectively located at the outer side ends of the first connecting member 61 and the second connecting member 62, so that the two flanges respectively press on the outer sides of the convex edges 631 of the two bushings 63. During assembly, after the first connection seat 40 is placed in the accommodating space 52, the two bushings 63 are respectively inserted into the two second shaft holes 511 from the outside to the inside. Then the first connecting member 61 and the second connecting member 62 respectively pass through the two bushings 63 from the outside of the second shaft hole 511, so that the first connecting member 61 and the second connecting member 62 are screwed and fixed inside the first shaft hole 401. The first connecting member 61 and the second connecting member 62 are fully tightened, so that the flanges at the outer side ends of the first connecting member 61 and the second connecting member 62 respectively press the convex edges 631 of the two bushings 63. In other embodiments, the first connecting member 61 and the second connecting member 62 are lock screws, and the flanges are lock screw nuts.
[0034] In the present utility model, a first connecting seat 40 may be provided at one end of the connecting arm 20, and a second connecting seat 50 may be provided at the other end. Correspondingly, a second connecting seat 50 is provided on the headrest 10, and a first connecting seat 40 is provided on the bracket 30. In other embodiments, the first connecting seats 40 of the two rotating joints are respectively provided at both ends of the connecting arm 20, and a second connecting seat 50 is respectively provided on the headrest 10 and the bracket 30, or a second connecting seat 50 is respectively provided at both ends of the connecting arm 20, and a first connecting seat 40 is respectively provided on the headrest 10 and the bracket 30.
[0035] See Figure 1 As shown, the seat of the present utility model includes the headrest assembly of the above seat. The seat may include a backrest 90, and a mounting seat 80 is fixed at the top of the backrest 90. The bracket 30 is connected to the mounting seat 80 in a vertically adjustable manner. In this way, the height of the bracket 30 can be adjusted in the vertical direction to quickly adjust the height of the headrest 10. The other structures of the seat are the same as those in the prior art and will not be described in detail here.
[0036] Finally, it should be noted that the above embodiments are only optional embodiment modes of the present utility model, and the protection scope of the present utility model cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model belong to the protection scope required by the present utility model.
Claims
1. A headrest assembly of a seat, characterized in that, Including headrest, connecting arm, bracket; A rotation joint is respectively provided at the connection point between the headrest and the connecting arm, and at the connection point between the connecting arm and the bracket; The rotational joint includes a first connecting seat, a second connecting seat, a rotating shaft, and a locking member. The rotating shaft connects the first connecting seat and the second connecting seat together so that the two can rotate relative to each other. The locking member is used to lock the first connecting seat and the second connecting seat after the first connecting seat and the second connecting seat rotate relative to each other to a predetermined angle to limit the freedom of relative rotation between the two.
2. The headrest assembly of the seat according to claim 1, characterized in that, The second connecting seat is provided with two connecting ears, and a receiving space is formed between the two connecting ears. The first connecting seat is placed in the receiving space and located between the two connecting ears. The rotating shaft crosses the two connecting ears and the first connecting seat to pivotally connect the first connecting seat and the second connecting seat together.
3. The headrest assembly of the seat according to claim 2, characterized in that, A plurality of latching grooves are arranged on the peripheral wall of the accommodating space on the second connecting seat, and the plurality of latching grooves are arranged around the central axis of the rotating shaft. The locking member includes a shell, a bead and an elastic member fixed on the first connecting seat. The shell is a hollow structure and an opening is formed at one end thereof facing the peripheral wall of the accommodating space. The bead and the elastic member are both placed in the shell. The elastic member is used to apply an elastic stress to the bead so that a part of the bead protrudes from the opening and is latched in one of the latching grooves.
4. The headrest assembly of the seat according to claim 3, characterized in that, An installation groove is arranged on the outer edge surface of the first connecting seat, the shell is embedded in the installation groove and fixedly matched with the first connecting seat, and the elastic member is a spring, one end of the spring abuts against the end of the shell away from its opening, and the other end abuts against the inner side of the bead.
5. The headrest assembly of the seat according to claim 3, characterized in that, A limiting groove is provided on the first connecting seat, and a limiting protrusion embedded in the limiting groove is provided on the peripheral wall of the accommodating space. The limiting protrusion moves between the two ends of the limiting groove to limit the maximum angle of rotation of the first connecting seat and the second connecting seat around the rotating axis.
6. The headrest assembly of the seat according to claim 2, characterized in that, A first axial hole is provided on the first connecting seat, and a second axial hole is provided on each of the two connecting ears. The second axial holes of the two connecting ears are coaxially arranged, and the rotating shaft crosses the first axial hole and the two second axial holes. A flange is provided at each end of the rotating shaft, and the two flanges respectively press the two connecting ears toward the first connecting seat.
7. The headrest assembly of the seat according to claim 6, characterized in that, A step surface is arranged in the second shaft hole, and a bushing is inserted in the second shaft hole. A convex edge which is pressed against the step surface is arranged at the outer end of the bushing. The rotating shaft comprises two connecting parts. The inner ends of the two connecting parts respectively pass through the two bushings and are fixed together in the first shaft hole by screw connection. The two flanges are respectively located at the outer ends of the two connecting parts and are respectively pressed against the outer sides of the two convex edges.
8. The headrest assembly of the seat according to any one of claims 1-7, characterized in that, The two first connection seats of the two rotating joints are respectively arranged at the two ends of the connecting arms; Or, the two second connection seats of the two rotating joints are respectively arranged at the two ends of the connecting arm; Alternatively, the first connection seat of one of the rotational joints is arranged at one end of the connecting arm, and the second connection seat of the other rotational joint is arranged at the other end of the connecting arm.
9. A seat, characterized in that, A headrest assembly for a seat comprising any one of claims 1-8.
10. The seat according to claim 9, characterized in that, The seat comprises a backrest, a mounting seat is fixedly mounted on the top of the backrest, and a bracket is connected to the mounting seat in a manner that the bracket can be adjusted up and down.