Adjusting structure of seat headrest and seat

Abstract

The utility model discloses an adjusting structure of a seat headrest and a seat, the adjusting structure of the seat headrest comprises a movable seat, a connecting seat and a mounting seat, and the seat headrest is mounted on the movable seat; the movable seat and the connecting seat are movably installed together, a first locking piece is arranged between the connecting seat and the movable seat, and the first locking piece is used for locking the movable seat and the connecting seat so as to limit the freedom degree of vertical movement of the movable seat relative to the connecting seat; the mounting base is connected with the connecting base through a rotating shaft extending in the left-right direction, a second locking piece is arranged between the mounting base and the connecting base, and the second locking piece is used for locking the connecting base and the mounting base so as to limit the degree of freedom of rotation of the connecting base relative to the mounting base. The height position of the headrest can well adapt to the positions of the head and the neck of a user, meanwhile, the angle of the headrest can well support the head and the neck of the user, and the comfort of the seat is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, and particularly relates to an adjusting structure of a seat headrest and a seat. Background Art

[0002] The traditional seat headrest is fixedly installed at the top of the seat backrest, and it can only provide support for the user's head and neck at a fixed position. When the user is in different sitting postures, it is very difficult for the height of the headrest and the angle of the support surface of the headrest to adapt to the positions of the user's head and neck. Therefore, it is very difficult for seats with fixed headrest positions to meet the requirements of many current functional seats, especially difficult to meet the use requirements of the user for office seats, e-sports seats, children's seats, etc.

[0003] In order to improve the defects of traditional fixed-headrest seats, some existing office seats, e-sports seats, and study seats install the headrest movably on the seat backrest or the backrest bracket, so that the headrest can be adjusted in the height direction. When the user is in different sitting postures, although it can provide support for the user's head and neck, due to the change of the angles of the user's head and neck in different sitting postures, it is difficult to make the support surface on the headrest better adapt to the angles of the user's head and neck only through height adjustment, resulting in poor comfort of the seat. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an adjusting structure of a seat headrest and a seat, which can make the headrest of the seat adapt to different sitting postures of the user and improve the comfort of the seat.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The adjusting structure of the seat headrest includes a movable seat, a connecting seat, and a mounting seat, and the seat headrest is installed on the movable seat;

[0007] The movable seat and the connecting seat are movably installed together so that the movable seat can move relative to the connecting seat in the up and down directions. A first locking member is arranged between the connecting seat and the movable seat, and this first locking member is used to lock the movable seat and the connecting seat after the movable seat moves up and down relative to the connecting seat to a predetermined position to limit the freedom degree of the movable seat moving up and down relative to the connecting seat;

[0008] The mounting seat is connected to the connecting seat through a rotating shaft extending in the left and right directions so that the connecting seat can swing up and down relative to the mounting seat. A second locking member is arranged between the mounting seat and the connecting seat, and the second locking member is used to lock the connecting seat and the mounting seat after the connecting seat rotates relative to the mounting seat to a predetermined position to limit the freedom degree of the connecting seat rotating relative to the mounting seat.

[0009] Preferably, a through groove penetrating the front and rear sides thereof is provided on the movable seat. On both sides of the through groove on the movable seat, a sliding groove extending in the up and down direction is respectively provided. On both sides of the connecting seat, a slider is respectively provided, and the two sliders are respectively slidably installed in the two sliding grooves.

[0010] Preferably, a plurality of card slots arranged in the up and down direction are provided on one side wall of the sliding groove. The first locking member includes a first housing fixedly connected to the slider, a first steel ball, and a first elastic member. The first housing is of a hollow structure, and one end thereof facing the card slot forms an opening. The first steel ball is placed in the first housing, and the first elastic member is placed inside the first housing and applies an elastic stress to the first steel ball, so that a part of the first steel ball protrudes from the opening of the first housing and is embedded in one of the card slots.

[0011] Preferably, two guiding members are fixedly connected to the movable seat. The two guiding members are respectively located on both sides of the through groove. The two sliding grooves are respectively arranged on the two guiding members, and the openings of the two sliding grooves are arranged oppositely.

[0012] Preferably, the connecting seat includes a connecting arm extending in the left and right directions. At both ends of the connecting arm, a connecting ear extending backward and passing through the through groove is respectively provided. The outer sides of the two connecting ears are respectively slidably abutted against both sides of the through groove. The two sliders respectively extend outward from both ends of the connecting arm and respectively extend into the sliding grooves from the openings of the two sliding grooves.

[0013] Preferably, the front end portion of the mounting seat is placed between the two connecting ears. A rotating shaft passes through the two connecting ears and the mounting seat to rotatably connect the connecting seat and the mounting seat together. A plurality of positioning grooves arranged around the rotating shaft are provided on the inner side surface of the connecting ear; the second locking member includes a second housing, a second steel ball, and a second elastic member. The second housing is fixedly connected to the side surface of the mounting seat. The second housing is of a hollow structure, and one end thereof facing the connecting ear forms an opening. The second steel ball is placed in the second housing, and the second elastic member is placed in the second housing and applies an elastic stress to the second steel ball, so that a part of the second steel ball protrudes from the opening of the second housing and is embedded in one of the positioning grooves.

[0014] Preferably, an arc-shaped limiting groove is provided on the rear side surface of the connecting arm. A limiting convex block extending into the limiting groove is provided at the front end portion of the mounting seat. The limiting convex block moves between the two end portions of the limiting groove to limit the maximum angle of the up and down swing of the connecting seat relative to the mounting seat.

[0015] Preferably, a limiting surface is respectively formed at both ends of the connecting arm. After the slider is embedded in the sliding groove of the guiding member, the limiting surface is slidably abutted against the inner side surface of the guiding member to limit the freedom degree of the connecting arm moving relative to the movable seat in the left and right directions.

[0016] Preferably, two positioning grooves are provided on the front side of the movable seat. The two guiding members are respectively embedded in the two positioning grooves. A cover plate is further provided on the front side of the movable seat. The cover plate is fixed to the movable seat by screws. The two guiding members are both clamped between the cover plate and the movable seat so that the two guiding members are fixedly engaged with the movable seat.

[0017] A seat, comprising the adjustment structure of the above-mentioned seat headrest.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] In the present utility model, through the mutual cooperation of the movable seat, the connecting seat and the mounting seat, the headrest mounted on the movable seat can be adjusted up and down. And on the basis that the headrest can be adjusted up and down, the angle adjustment of the headrest can be realized. The user can adjust the height or angle of the headrest, or adjust the height and angle of the headrest at the same time according to his own sitting posture and usage scenario, so that the height position of the headrest can not only better adapt to the head and neck positions of the user, but also the angle of the headrest can provide better support for the head and neck of the user, improving the comfort of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is Figure 1 an assembly schematic diagram of the connecting seat and the movable seat in

[0022] Figure 3 is Figure 1 a schematic structural diagram of the connecting seat in

[0023] Figure 4 is Figure 1 a schematic structural diagram of the mounting seat in

[0024] Figure 5 is Figure 1 a schematic structural diagram of the first locking member in

[0025] Wherein: 10, movable seat; 101, through groove; 102, positioning groove; 11, cover plate; 20, connecting seat; 21, connecting arm; 211, limiting surface; 22, connecting ear; 221, clamping groove; 222, shaft hole; 23, first locking member; 231, first housing; 232, first steel ball; 233, first spring; 24, slider; 241, mounting hole; 25, limiting groove; 30, mounting seat; 301, side surface; 31, shaft hole; 32, second locking member; 33, mounting hole; 34, limiting convex block; 40, guiding member; 41, sliding groove; 42, clamping groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, in combination with the accompanying drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment. Except as otherwise specifically stated, the materials and equipment used in this embodiment can be purchased from the market. The examples of the embodiments are shown in the accompanying drawings, where 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 accompanying 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 accompanying 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 can be connected through an intermediate medium, or can be the internal communication of 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] Such as Figure 1 、 2, as shown in Figures 3, 4, and 5, is an adjustment structure for a seat headrest of the present utility model, which includes a movable seat 10, a connecting seat 20, and a mounting seat 30. The headrest of the seat is mounted on the movable seat 10. The movable seat 10 and the connecting seat 20 are movably mounted together, such that the movable seat 10 can move relative to the connecting seat 20 in the up and down directions. A first locking member 23 is provided between the connecting seat 20 and the movable seat 10. The first locking member 23 is used to lock the movable seat 10 and the connecting seat 20. After the movable seat 10 is moved up and down relative to the connecting seat 20 to a predetermined position, the movable seat 10 and the connecting seat 20 are locked by the first locking member 23 to limit the degree of freedom of the movable seat 10 to move relative to the connecting seat 20 in the up and down directions, thereby realizing the position adjustment of the headrest in the up and down directions. The mounting seat 30 and the connecting seat 20 are connected together by a rotating shaft extending in the left and right directions, enabling the connecting seat 20 to swing up and down relative to the mounting seat 30. A second locking member 32 is provided between the mounting seat 30 and the connecting seat 20. The second locking member 32 can lock the connecting seat 20 and the mounting seat 30, limiting the degree of freedom of the connecting seat 20 to rotate relative to the mounting seat 30 about the rotating shaft. When the connecting seat 20 swings up and down relative to the mounting seat 30 to a predetermined position, the second locking member 32 locks the connecting seat 20 and the mounting seat 30 to prevent the connecting seat 20 from rotating relative to the mounting seat 30 about the rotating shaft, thereby realizing the angle adjustment of the headrest.

[0030] In the present utility model, through the mutual cooperation of the movable seat 10, the connecting seat 20, and the mounting seat 30, the headrest mounted on the movable seat 10 can be adjusted up and down. And on the basis of the headrest being adjustable up and down, the angle adjustment of the headrest can be realized. The user can, according to his own sitting posture and usage scenario, selectively adjust the height or angle of the headrest, or adjust the height and angle of the headrest simultaneously, such that the height position of the headrest can not only better adapt to the head and neck positions of the user, but also the angle of the headrest can provide better support for the head and neck of the user, improving the comfort of the seat.

[0031] In a preferred embodiment, a through groove 101 penetrating the front and rear sides thereof is provided on the movable seat 10. On both sides of the through groove 101 on the movable seat 10, a sliding groove 41 is respectively provided. The extending direction of the sliding groove 41 is consistent with the up and down direction. On both sides of the connecting seat 20, a sliding block 24 is respectively provided. The two sliding blocks 24 are respectively slidably embedded in the two sliding grooves 41. Through the cooperation of the sliding groove 41 and the sliding block 24, it plays a guiding role in the up and down movement of the movable seat 10, that is, when the movable seat 10 moves up and down relative to the connecting seat 20, the sliding block 24 can slide inside the sliding groove 41. On one side wall of the sliding groove 41, a plurality of clamping grooves 42 arranged in the up and down direction are provided. The first locking member 23 is installed on the sliding block 24, and specifically includes a first housing 231, a first steel ball 232 and a first spring 233. The first housing 231 is fixed on the sliding block 24. Specifically, an installation hole 241 can be provided on the sliding block 24, and the first housing 231 is fixedly embedded in the installation hole 241. The first housing 231 is of a hollow structure and an opening is formed at one end thereof facing the clamping groove 42. The first steel ball 232 is placed inside the first housing 231. The first spring 233 is located inside the first housing 231. One end of the first spring 233 abuts against the first housing 231, and the other end abuts against the inner side of the first steel ball 232. An elastic stress is applied to the first steel ball 232 by the first spring 233, so that a part of the first steel ball 232 protrudes from the opening of the first housing 231. The part of the first steel ball 232 protruding from the opening of the first housing 231 is embedded in one of the clamping grooves 42. Through the elastic stress provided by the first spring 233, the first steel ball 232 is always pressed towards the direction facing the clamping groove 42. A part of the first steel ball 232 is embedded in the clamping groove 42 and the other part is embedded in the first housing 231. In this way, the sliding block 24 and the movable seat 10 are locked by the first steel ball 232. When the movable seat 10 is not affected by an external force, the resistance applied by the first steel ball 232 to the movable seat 10 is greater than the self-weight of the movable seat 10 and the headrest, so that the position of the movable seat 10 in the up and down direction remains fixed. When it is necessary to adjust the movable seat 10, the movable seat 10 is pushed upward or the movable seat 10 is pressed downward. The external force applied to the movable seat 10 can overcome the resistance formed by the first steel ball 232 to the movable seat 10. The side of the clamping groove 42 presses the first steel ball 232, and then the first steel ball 232 presses the first spring 233 and contracts towards the inside of the first housing 231. The first steel ball 232 gradually disengages from the clamping groove 42. When the movable seat 10 is moved to the required position and the external force on the movable seat 10 is released, the first steel ball 232 falls into the clamping groove 42 in an appropriate position under the action of the elastic stress of the first spring 233, and locks the movable seat 10 and the connecting seat 20 again.

[0032] Two guiding members 40 are fixedly connected to the movable seat 10. The two guiding members 40 are respectively located on both sides of the through groove 101. Two sliding grooves 41 are respectively arranged on the two guiding members 40. Specifically, the sliding grooves 41 are formed on the inner side surfaces of the guiding members 40. Thus, the openings of the two sliding grooves 41 are arranged oppositely. The connecting seat 20 includes a connecting arm 21 extending in the left-right direction. Two connecting ears 22 extending backward are respectively arranged at both ends of the connecting arm 21. After passing through the through groove 101, the two connecting ears 22 extend to the rear side of the movable seat 10. The outer side surfaces of the two connecting ears 22 are respectively slidably abutted against both side edges of the through groove 101. Two sliders 24 respectively extend outward from both sides of the connecting arm 21, so that the two sliders 24 can respectively extend into the interior of the sliding grooves 41 from the openings of the two sliding grooves 41, and then the two sliders 24 are respectively slidably engaged with the two sliding grooves 41. The front end of the mounting seat 30 is placed between the two connecting ears 22. A rotating shaft passes through the two connecting ears 22 and the front end portion of the mounting seat 30 to rotatably connect the connecting seat 20 and the mounting seat 30 together. Specifically, a shaft hole 222 is provided on the connecting ear 22, and a shaft hole 31 penetrating through both side surfaces 301 of the mounting seat 30 is provided at the front end portion of the mounting seat 30. After the rotating shaft passes through the shaft hole 31, its two ends are inserted into the shaft holes 222 of the two connecting ears 22; a plurality of clamping grooves 221 are provided on the inner side surface of the connecting ear 22. The plurality of clamping grooves 221 are arranged around the rotating shaft. The second locking member 32 has the same structure as the above-mentioned first locking member 23. It includes a second housing, a second steel ball and a second spring. The second housing is fixedly connected in a mounting hole 33 formed on the side surface 301 of the mounting seat 30. The second spring applies an elastic stress to the second steel ball, so that a part of the second steel ball protrudes from the opening of the second housing and is embedded into one of the clamping grooves 221; the elastic stress provided by the second spring is used to press the second steel ball, so that a part of the second steel ball is placed in the clamping groove 221, that is, the freedom degree of rotation of the connecting ear 22 relative to the mounting seat 30 is limited by the second steel ball. When an external force is applied to the headrest or the connecting seat 20 to make the connecting seat 20 swing up and down relative to the mounting seat 30 around the rotating shaft, the side edge of the clamping groove 221 presses the second steel ball, so that the second steel ball compresses the second spring and contracts towards the interior of the second housing, and the second steel ball disengages from the clamping groove 221. After the connecting seat 20 rotates to the required angle, the second steel ball is clamped into the clamping groove 221 at the corresponding position under the action of the elastic stress of the second spring, and the freedom degree of rotation of the connecting seat 20 relative to the mounting seat 30 is locked again.

[0033] It should be noted that the above-mentioned first spring 233 and second spring of the present utility model can also be replaced by other elastic members. For example, they can be elastic rubber blocks or elastic sheets.

[0034] When adjusting the headrest angle, to prevent the connecting seat 20 from rotating excessively relative to the mounting seat 30, an arc-shaped limiting groove 25 is provided on the rear side surface of the connecting arm 21, and a limiting projection 34 is provided at the front end of the mounting seat 30. The limiting projection 34 extends into the limiting groove 25, and the limiting projection 34 moves between the two end portions of the limiting groove 25, thereby limiting the maximum angle of the up-and-down swing of the connecting seat 20 relative to the mounting seat 30.

[0035] Limiting surfaces 211 are respectively formed at both end portions of the connecting arm 21. After the slider 24 is embedded in the sliding groove 41 of the guide member 40, the limiting surfaces 211 slide and abut against the inner side surface of the guide member 40. Thus, by respectively cooperating the two limiting surfaces 211 with the inner side surfaces of the two guide members 40, the degree of freedom of the movement of the connecting arm 21 relative to the movable seat 10 in the left-right direction is limited, preventing the movable seat 10 from swinging left and right relative to the connecting seat 20, enabling the headrest located on the movable seat 10 to have better stability, and then enabling the headrest to provide better support for the user's head and neck.

[0036] Two positioning grooves 102 are provided on the front side surface of the movable seat 10. The two positioning grooves 102 are respectively located on both sides of the through groove 101. The two guide members 40 are respectively embedded in the two positioning grooves 102. A cover plate 11 is further provided on the front side of the movable seat 10. The cover plate 11 is fixedly connected to the movable seat 10 by screws. The two guide members 40 are clamped between the cover plate 11 and the movable seat 10, enabling the two guide members 40 to be fixedly fitted with the movable seat 10. By providing the cover plate 11, the guide members 40 and the connecting seat 20 are shielded at the rear side thereof. The portion on the front side of the cover plate 11 can facilitate the arrangement of the flexible filler inside the headrest. At the same time, when the guide members 40 are worn, the cover plate 11 detachably connected to the movable seat 10 can facilitate the disassembly, installation, and replacement of the guide members 40.

[0037] The seat of the present utility model includes the adjustment structure of the above-mentioned seat headrest. The other structures of the seat are the same as those in the prior art and will not be described in detail here.

[0038] Finally, it should be noted that the above embodiments are only optional embodiment modes of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model fall within the protection scope required by the present utility model.

Claims

1. The adjustment structure of the seat headrest is characterized by: It includes a movable seat, a connecting seat and a mounting seat, and the seat headrest is mounted on the movable seat; The movable seat and the connecting seat are movably mounted together so that the movable seat can move relative to the connecting seat in the up-down direction. A first locking member is provided between the connecting seat and the movable seat. The first locking member is used to lock the movable seat and the connecting seat after the movable seat moves up-down to a predetermined position relative to the connecting seat so as to limit the freedom of the movable seat to move up-down relative to the connecting seat. The mounting base is connected to the connecting base by a rotating shaft extending in the left-right direction so that the connecting base can swing up and down relative to the mounting base. A second locking member is arranged between the mounting base and the connecting base. The second locking member is used to lock the connecting base and the mounting base after the connecting base is rotated to a predetermined position relative to the mounting base to limit the degree of freedom of rotation of the connecting base relative to the mounting base.

2. The seat headrest adjustment structure according to claim 1, characterized in that: The movable seat is provided with a through slot running through the front and rear sides thereof, and the movable seat is provided with a slide slot extending in the up and down directions on both sides of the through slot, and a slider is provided on both sides of the connecting seat, and the two sliders are slidably installed in the two slide slots.

3. The seat headrest adjustment structure according to claim 2, characterized in that: A plurality of slots arranged in the up-down direction are provided on one of the side walls of the slide groove. The first locking member includes a first shell fixedly connected to the slider, a first steel ball, and a first elastic member. The first shell is a hollow structure and an opening is formed at one end thereof facing the slot. The first steel ball is placed in the first shell. The first elastic member is placed inside the first shell and applies an elastic stress to the first steel ball so that a part of the first steel ball protrudes from the opening of the first shell and is embedded in one of the slots.

4. The seat headrest adjustment structure according to claim 2 or 3, characterized in that: The movable seat is fixedly connected with two guide members, the two guide members are respectively located at two sides of the through slot, the two slide slots are respectively arranged on the two guide members, and the openings of the two slide slots are arranged opposite to each other.

5. The seat headrest adjustment structure according to claim 4, characterized in that: The connecting seat includes a connecting arm extending in the left and right directions, and each end of the connecting arm is provided with a connecting ear extending backward and passing through the through slot. The outer sides of the two connecting ears slide against the two side edges of the through slot respectively, and the two sliding blocks extend outward from the two ends of the connecting arm and extend into the slide slot respectively from the openings of the two slide slots.

6. The seat headrest adjustment structure according to claim 5, characterized in that: The front end of the mounting seat is placed between the two connecting ears, and the rotating shaft crosses the two connecting ears and the mounting seat to rotatably connect the connecting seat and the mounting seat. A plurality of locking grooves arranged around the rotating shaft are provided on the inner side surface of the connecting ear; the second locking member includes a second shell, a second steel ball, and a second elastic member. The second shell is fixedly connected to the side of the mounting seat, the second shell is a hollow structure and an opening is formed at one end facing the connecting ear, the second steel ball is placed in the second shell, and the second elastic member is placed in the second shell and applies an elastic stress to the second steel ball so that a part of the second steel ball protrudes from the opening of the second shell and is embedded in one of the locking grooves.

7. The seat headrest adjustment structure according to claim 6, characterized in that: The rear side of the connecting arm is provided with an arc-shaped limiting groove, and the front end of the mounting seat is provided with a limiting protrusion extending into the limiting groove. The limiting protrusion moves between the two ends of the limiting groove to limit the maximum angle of the connecting seat relative to the mounting seat.

8. The seat headrest adjustment structure according to claim 5, characterized in that: A limiting surface is formed at both ends of the connecting arm. After the slider is embedded in the slide groove of the guide member, the limiting surface slides against the inner side surface of the guide member to limit the freedom of movement of the connecting arm in the left and right directions relative to the movable seat.

9. The seat headrest adjustment structure according to claim 4, characterized in that: Two positioning grooves are arranged on the front side of the movable seat, and the two guide members are respectively embedded in the two positioning grooves. A cover plate is also arranged on the front side of the movable seat, and the cover plate is fixed to the movable seat by screws. The two guide members are clamped between the cover plate and the movable seat so that the two guide members are fixedly matched with the movable seat.

10. A seat, characterized in that: The invention comprises the adjustment structure of the seat headrest according to any one of claims 1 to 9.

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