Self-adaptive adjusting mechanism of seat waist support and seat

Abstract

The utility model discloses a self-adaptive adjusting mechanism of a seat waist support and a seat. The self-adaptive adjusting mechanism of the seat waist support comprises a movable seat and a mounting seat, a guide groove is formed in the movable seat, guide rails extending in the vertical direction are formed in the portions, located on the two sides of the guide groove, of the movable seat respectively, sliding grooves are formed in the two sides of the installation seat respectively, and the two guide rails are embedded in the two sliding grooves respectively in a sliding mode so that the movable seat can slide relative to the installation seat in the vertical direction. The mounting seat is provided with a mounting groove extending upwards from the bottom face of the mounting seat, a tension spring is embedded in the mounting groove, the top of the tension spring is connected to the mounting seat, the bottom of the tension spring is connected to the movable seat, and the tension spring is used for providing elastic stress for pulling the movable seat upwards when the movable seat moves downwards relative to the mounting seat. The waist support can automatically adapt to the body types and different sitting postures of different users and can be adaptively moved to the optimal supporting position, the waist support does not need to be adjusted for many times, and the use convenience of the seat is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to an adaptive adjustment mechanism for a seat lumbar support and a seat. Background Art

[0002] A traditional seat is provided with a backrest at the rear side of the seat cushion, and the backrest supports the back of the user. The waist of the user is in a suspended state, which easily causes waist fatigue. In order to solve the above defects of traditional seats, some existing e-sports seats and office seats are usually equipped with a lumbar support on the backrest of the seat, and the lumbar support is used to support the waist of the user to improve the comfort of the seat. In order to further adapt to the body shapes of different users and different sitting postures of users, the lumbar supports of some seats are installed on the backrest of the seat in an adjustable up and down manner. When using the seat, the user can adjust the lumbar support to a suitable position according to his own body shape and sitting posture. However, in the process of using these adjustable lumbar supports, it often takes multiple adjustments to make the lumbar support in the best support position, and the convenience of use is poor. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an adaptive adjustment mechanism for a seat lumbar support and a seat. When using the seat, the lumbar support can automatically move to the best support position according to the body shape and sitting posture of the user, improving the convenience of using the seat.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An adaptive adjustment mechanism for a seat lumbar support includes a movable seat and a mounting seat. The mounting seat is connected to the backrest or seat cushion of the seat, and the lumbar support of the seat is mounted on the movable seat;

[0006] A guide groove is provided on the movable seat, and parts of the movable seat on both sides of the guide groove respectively form a guide rail extending in the up and down direction. A sliding groove is provided on each side of the mounting seat, and the two guide rails are respectively slidably embedded in the two sliding grooves so that the movable seat can slide relative to the mounting seat in the up and down direction;

[0007] A mounting groove extending upward from the bottom surface is provided on the mounting seat, and a tension spring is embedded in the mounting groove. The top of the tension spring is connected to the mounting seat, and the bottom is connected to the movable seat. The tension spring is used to provide an elastic stress for pulling the movable seat upward when the movable seat moves downward relative to the mounting seat.

[0008] Preferably, the mounting seat includes a base placed at the rear side of the movable seat and a fixing plate placed at the front side of the movable seat. The fixing plate and the base are detachably fixed together. The sliding groove is located between the side of the fixing plate and the side of the base, and the mounting groove is provided on the base.

[0009] Preferably, a boss is provided on the front side of the base and is embedded in the guide groove. Both sides of the boss are slidably abutted against the two side walls of the guide groove. The fixing plate is connected to the front side of the boss by screws. The sliding groove is formed by the rear side of the fixing plate, the side of the boss and the front side of the base; the installation groove is recessed backward from the front side of the boss.

[0010] Preferably, the guide rail includes a first wall plate extending from the movable seat towards the middle of the guide groove and a second wall plate extending forward from the inner side edge of the first wall plate. A guide groove is formed between the second wall plates of the two guide rails. On both sides of the rear side of the fixing plate, a retaining rib is respectively protrudingly provided. The two retaining ribs are respectively slidably abutted against the outer sides of the two second wall plates.

[0011] Preferably, there is a clearance fit between the front side of the base and the rear side of the first wall plate. An arc concave position is provided on the front side of the base. A roller is embedded in the arc concave position. A part of the roller protrudes from the front side of the base and abuts against the rear side of the first wall plate to perform a rolling fit with the rear side of the first wall plate.

[0012] Preferably, an upper hanging rod is provided at the top of the installation groove, and an opening is provided at the bottom of the installation groove. A lower hanging rod located directly below the opening is provided at the position of the lower edge of the guide groove on the movable seat. The upper end and the lower end of the tension spring are respectively hung on the upper hanging rod and the lower hanging rod.

[0013] Preferably, a step surface and a stop screw are provided on both the upper hanging rod and the lower hanging rod. The end of the tension spring is limited between the step surface and the nut of the stop screw.

[0014] Preferably, a lumbar support back plate is provided at the rear side of the lumbar support. The lumbar support back plate is connected to the movable seat to mount the lumbar support on the movable seat. A receiving hole is provided on the lumbar support back plate. The movable seat is placed in the receiving hole.

[0015] Preferably, a baffle is detachably fixed on the front side of the movable seat, and the baffle shields the guide groove and the mounting seat at its rear side.

[0016] A seat, comprising the adaptive adjustment mechanism of the above-mentioned seat lumbar support.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] In the present utility model, the movable seat is slidably mounted on the mounting seat up and down, and a tension spring is connected between the movable seat and the mounting seat, so that the lumbar support is in a freely movable state up and down. The tension spring provides an elastic stress that always pulls the movable seat upward. The downward pressure exerted by the user's waist on the lumbar support and the upward elastic stress exerted by the tension spring on the movable seat reach equilibrium, realizing the adaptive adjustment of the position of the lumbar support. The lumbar support can automatically adapt to the body shapes of different users and different sitting postures, and move to the optimal support position adaptively, without the need to adjust the lumbar support multiple times, improving the convenience of using the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural view of the present utility model;

[0020] Figure 2 is a cross-sectional view of the present utility model;

[0021] Figure 3 is Figure 2 the A-A cross-sectional view of

[0022] Figure 4 is an enlarged view of position B in 2;

[0023] Figure 5 is Figure 1 the schematic structural view of the mounting seat in

[0024] Wherein: 10, movable seat; 11, guide groove; 12, guide rail; 121, first wall plate; 122, second wall plate; 13, lower hanging rod; 20, base; 200, mounting seat; 201, front side; 202, sliding groove; 21, boss; 22, mounting groove; 221, upper hanging rod; 222, step surface; 223, stop screw; 23, arc recess; 24, roller; 30, fixing plate; 31, retaining rib; 40, tension spring; 50, lumbar support back plate; 51, receiving hole; 60, baffle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, in combination with the drawings and the specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, any combination can be formed between the following described embodiments or technical features to form new embodiments. Except for special instructions, 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 from beginning to end. 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.

[0026] 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. It 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. Therefore, it 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.

[0027] In the description of the present application, it should be noted that unless otherwise clearly specified 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, or the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to specific circumstances.

[0028] Such as Figure 1 , 2As shown in Figures 3, 4, and 5, an adaptive adjustment mechanism for a seat lumbar support of the present utility model includes a movable seat 10 and a mounting seat 200. The mounting seat 200 is connected to the backrest of the seat, and the lumbar support of the seat is mounted on the movable seat 10. The movable seat 10 can move relative to the mounting seat 200 in the up and down directions, so that the lumbar support has the freedom to move relative to the backrest of the seat in the up and down directions; in other embodiments, it is also possible to mount the mounting seat 200 on the seat cushion of the seat, so that the lumbar support has the freedom to move relative to the seat cushion of the seat in the up and down directions. In short, when using the seat, as long as the lumbar support can have the freedom to move relative to the user's waist in the up and down directions. A guide groove 11 is provided on the movable seat 10, and the parts of the movable seat 10 on both sides of the guide groove 11 respectively form a guide rail 12 extending in the up and down directions; a chute 202 is provided on each side of the mounting seat 200, and the two guide rails 12 are respectively embedded in the two chutes 202, and the two guide rails 12 are respectively in sliding cooperation with the inner walls of the two chutes 202. Thus, the movable seat 10 can slide relative to the mounting seat 200 in the up and down directions. By the cooperation of the two guide rails 12 with the two chutes 202, the movable seat 10 can slide up and down relative to the mounting seat 200 more stably. An installation groove 22 extending upward from the bottom surface is provided on the mounting seat 200, and a tension spring 40 is embedded in the installation groove 22. The top of the tension spring 40 is connected to the mounting seat 200 and the bottom is connected to the movable seat 10. Based on the above mechanism of the movable seat 10 sliding relative to the mounting seat 200 in the up and down directions, the movable seat 10 is hoisted on the mounting seat 200 by the tension spring 40. The tension spring 40 is used to keep the movable seat 10 basically fixed relative to the mounting seat 200 in the height position. When the movable seat 10 moves downward relative to the mounting seat 200, the tension spring 40 is stretched, so that the tension spring 40 provides an elastic stress to pull the movable seat 10 upward relative to the mounting seat 200.

[0029] When the user uses the seat, the user's waist will press the lumbar support downward. The movable seat 10 moves downward relative to the mounting seat 200 along with the lumbar support. As the movable seat 10 moves downward, the tension spring 40 is stretched. As the tension spring 40 is gradually stretched, the upward elastic stress exerted on the movable seat 10 gradually increases. Until the downward pressure of the user's waist on the movable seat 10 and the upward elastic pressure provided by the tension spring 40 reach equilibrium, the movable seat 10 remains in a predetermined position, and then the lumbar support mounted on the movable seat 10 is in the best support position. In the present utility model, the movable seat 10 is slidably mounted on the mounting seat 200 up and down, and the tension spring 40 is connected between the movable seat 10 and the mounting seat 200, so that the lumbar support is in a freely movable state up and down. The tension spring 40 provides an elastic stress that always pulls the movable seat 10 upward. The downward pressure exerted by the user's waist on the lumbar support and the upward elastic stress exerted by the tension spring 40 on the movable seat 10 reach equilibrium, realizing the adaptive adjustment of the position of the lumbar support. The lumbar support can automatically adapt to the body shapes of different users and different sitting postures, and move to the best support position adaptively, without the need to adjust the lumbar support multiple times, improving the convenience of using the seat.

[0030] In a preferred embodiment, to facilitate the assembly and cooperation of the mounting base 200 with the guide rail 12 of the movable seat 10 and also facilitate the installation of the tension spring 40, the mounting base 200 of the present utility model includes a base 20 and a fixing plate 30. The base 20 is located at the rear side of the movable seat 10, and the fixing plate 30 is located at the front side of the movable seat 10. The fixing plate 30 and the base 20 are cooperated in a detachable manner. For example, the two can be detachably fixed together by screws. During assembly, the base 20 is placed at the rear side of the movable seat 10 and the fixing plate 30 is placed at the front side of the movable seat 10, and the fixing plate 30 and the base 20 are fixed by screws, so that the fixing plate 30 and the base 20 are respectively located on the front and rear sides of the guide rail 12. The above-mentioned sliding groove 202 is located between the side edges of the fixing plate 30 and the side edges of the base 20, and the mounting groove 22 is provided on the base 20. The mounting base 200 is set to a split structure to facilitate the assembly of the mounting base 200 with the movable seat 10, so that the sliding groove 202 on the mounting base 200 can be more closely cooperated with the guide rail 12, reducing the fitting clearance between the inner surface of the sliding groove 202 and the guide rail 12, enabling the lumbar support to move up and down stably, and the split mounting base 200 can facilitate the assembly of the tension spring 40 onto the mounting base 200. A boss 21 is protrudingly provided on the front side surface 201 of the base 20. The width of the boss 21 is equivalent to that of the guide groove 11. After the boss 21 is embedded inside the guide groove 11, its two sides respectively slide and abut against the two side walls of the guide groove 11, that is, the boss 21 cooperates with the two side walls of the guide groove 11, which can prevent the movable seat 10 from swinging left and right during the up and down movement. The above-mentioned fixing plate 30 is fixedly connected to the front side surface of the boss 21 by screws. The sliding groove 202 is surrounded by the rear side surface of the fixing plate 30, the side surface of the boss 21, and the front side surface 201 of the base 20. The mounting groove 22 is recessed backward from the front side surface of the boss 21, and the notch formed on the bottom surface of the boss 21 is the bottom opening of the mounting groove 22.

[0031] In order to further prevent the movable seat 10 from yawing left and right during up and down movement and improve the stability of the lumbar support, the above-mentioned guide rail 12 includes a first wall plate 121 extending from the movable seat 10 towards the middle of the guide groove 11, and a second wall plate 122 extending forward from the inner side edge of the first wall plate 121. A guide groove 11 is formed between the second wall plates 122 of the two guide rails 12. On both sides of the rear side of the fixed plate 30, a retaining rib 31 is respectively protrudingly provided. The two retaining ribs 31 are respectively slidably abutted against the outer sides of the two second wall plates 122. By using the cooperation between the second wall plate 122 and the retaining rib 31, the degree of freedom of the movable seat 10 moving relative to the mounting seat 200 in the left and right directions is limited, and the stability of the movable seat 10 during up and down movement is further improved. In addition, the front side surface 201 of the base 20 is in clearance fit with the rear side surface of the first wall plate 121. An arc concave position 23 is provided on the front side surface 201 of the base 20. A roller 24 is embedded inside the arc concave position 23. A part of the roller 24 protrudes from the front side surface 201 of the base 20, and the protruding part of the roller 24 abuts against the rear side surface of the first wall plate 121. By supporting the first wall plate 121 in the front and rear directions by the roller 24 and rollingly cooperating with the rear side surface of the first wall plate 121, the up and down sliding between the movable seat 10 and the mounting seat 200 is rolling friction, reducing the frictional resistance between the movable seat 10 and the mounting seat 200, and making the movement of the movable seat 10 relative to the mounting seat 200 in the up and down direction more flexible.

[0032] In the present utility model, an upper hanging rod 221 is provided at the top of the installation groove 22, and a lower hanging rod 13 is provided at the position of the movable seat 10 along the lower edge of the guide groove 11. The lower hanging rod 13 is directly below the bottom opening of the installation groove 22. The upper end of the tension spring 40 is hung on the upper hanging rod 221, and the lower end is hung on the lower hanging rod 13. In order to prevent the end of the tension spring 40 from loosening and causing the adjustment mechanism to fail, a stepped surface 222 and a stop screw 223 are provided on the upper hanging rod 221. After hanging the upper end of the tension spring 40 on the upper hanging rod 221, the stop screw 223 is screwed onto the upper hanging rod 221, so that the upper end of the tension spring 40 is limited between the stepped surface 222 and the stop screw 223, thereby preventing the upper end of the tension spring 40 from detaching from the upper hanging rod 221. Similarly, a stepped surface and a stop screw for limiting the lower end of the tension spring 40 are also provided on the lower hanging rod 13.

[0033] A lumbar support back plate 50 is provided at the rear side of the lumbar support. The lumbar support back plate 50 is connected to the movable seat 10. The lumbar support is connected to the movable seat 10 through the lumbar support back plate 50. A receiving hole 51 is provided on the lumbar support back plate 50. The receiving hole 51 is used to receive the movable seat 10, so that the entire adjustment mechanism is more compact, especially the size in the front-rear direction after the adjustment mechanism and the lumbar support are assembled can be better controlled. A baffle 60 is provided on the front side of the movable seat 10. The baffle 60 is fixed to the movable seat 10 in a detachable manner. For example, the baffle 60 is fixed to the movable seat 10 by means of snap connection or screw connection. The guide groove 11 and the mounting seat 200 are shielded at the rear side by the baffle 60, so that the front side of the baffle 60 and the lumbar support back plate 50 can conveniently arrange the flexible filler inside the lumbar support, facilitating the assembly of the entire seat.

[0034] The seat of the present utility model includes the adaptive adjustment mechanism of the above-mentioned seat lumbar support. The other structures of the seat are the same as those in the prior art and will not be described in detail here.

[0035] Finally, it should be noted that the above-mentioned 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 fall within the protection scope required by the present utility model.

Claims

1. The adaptive adjustment mechanism of the seat lumbar support is characterized by: It includes a movable seat and a mounting seat, wherein the mounting seat is connected to a backrest or a seat cushion of the seat, and a lumbar support of the seat is mounted on the movable seat; The movable seat is provided with a guide groove, and the parts of the movable seat located on both sides of the guide groove respectively form a guide rail extending in the up-down direction, and the two sides of the mounting seat are respectively provided with a slide groove, and the two guide rails are respectively slidably embedded in the two slide grooves so that the movable seat can slide relative to the mounting seat in the up-down direction; The mounting seat is provided with a mounting groove extending upward from its bottom surface, and a tension spring is embedded in the mounting groove. The top of the tension spring is connected to the mounting seat and the bottom is connected to the movable seat. The tension spring is used to provide an elastic stress to pull the movable seat upward when the movable seat moves downward relative to the mounting seat.

2. The self-adaptive adjustment mechanism of the seat lumbar support according to claim 1, characterized in that: The mounting seat includes a base arranged at the rear side of the movable seat and a fixed plate arranged at the front side of the movable seat. The fixed plate and the base are detachably fixed together. The slide groove is located between the side of the fixed plate and the side of the base. The mounting groove is arranged on the base.

3. The self-adaptive adjustment mechanism of the seat lumbar support as claimed in claim 2, characterized in that: A boss embedded in the guide groove is provided on the front side of the base, and the two sides of the boss slide against the two side walls of the guide groove respectively. The fixing plate is connected to the front side of the boss by screws, and the slide groove is surrounded by the rear side of the fixing plate, the side of the boss and the front side of the base; the installation groove is formed by the front side of the boss being recessed backwards.

4. The self-adaptive adjustment mechanism of the seat lumbar support as claimed in claim 3, characterized in that: The guide rail includes a first wall plate extending from the movable seat toward the middle of the guide groove, and a second wall plate extending forward from the inner side of the first wall plate. A guide groove is formed between the second wall plates of the two guide rails. A retaining rib is protruded on both sides of the rear side of the fixed plate, and the two retaining ribs are slidably attached to the outer sides of the two second wall plates.

5. The self-adaptive adjustment mechanism of the seat lumbar support as claimed in claim 4, characterized in that: The front side surface of the base is gap-matched with the rear side surface of the first wall panel. A circular arc recess is set on the front side surface of the base, and a roller is embedded in the circular arc recess. A part of the roller protrudes from the front side surface of the base and abuts against the rear side surface of the first wall panel to roll with the rear side surface of the first wall panel.

6. The self-adaptive adjustment mechanism of the seat lumbar support as claimed in claim 1, characterized in that: An upper hanging rod is arranged at the top of the installation groove, an opening is arranged at the bottom of the installation groove, a lower hanging rod is arranged on the movable seat at the lower edge of the guide groove and is located directly below the opening, and the upper end and the lower end of the tension spring are respectively hung on the upper hanging rod and the lower hanging rod.

7. The self-adaptive adjustment mechanism of the seat lumbar support as claimed in claim 6, characterized in that: A step surface and a stop screw are arranged on the upper hanging rod and the lower hanging rod, and the end of the tension spring is limited between the step surface and the nut of the stop screw.

8. The self-adaptive adjustment mechanism of the seat lumbar support as claimed in claim 1, characterized in that: A lumbar support back plate is arranged on the rear side of the lumbar support, the lumbar support back plate is connected to the movable seat so as to install the lumbar support on the movable seat, and a receiving hole is arranged on the lumbar support back plate, and the movable seat is placed in the receiving hole.

9. The self-adaptive adjustment mechanism of the seat lumbar support as claimed in claim 8, characterized in that: A baffle is detachably fixed on the front side of the movable seat, and the baffle shields the guide groove and the mounting seat at the rear side thereof.

10. A seat, characterized in that: An adaptive adjustment mechanism for a seat lumbar support comprising any one of claims 1-9.

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