Waist support adjusting mechanism and seat

Abstract

The utility model discloses a lumbar support adjusting mechanism and seat, the lumbar support adjusting mechanism includes: first slide carriage and first slider, the first slider is suitable for being connected with the lumbar support and can be arranged on the first slide carriage along the vertical direction in a sliding manner, and first spring is connected between the first slider and the first slide carriage; the first spring is used for driving the first sliding piece to move upwards relative to the first sliding base. According to the lumbar support adjusting mechanism, through the cooperation of the first sliding piece, the first sliding seat and the first spring, a user only needs to sit down and lean against the lumbar support, the height position of the lumbar support can be adjusted, it is guaranteed that the lumbar support can stably support the waist of the user, and therefore the steps and difficulty of adjusting the height position of the lumbar support by the user can be simplified; the user experience is improved while the comfort level of the seat is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, and in particular to a lumbar support adjusting mechanism and a seat. Background Art

[0002] Seats are essential items in people's lives. A key part affecting the comfort of a seat is the position of the lumbar support of the seat. The lumbar support can bear the weight of the human waist to meet the comfort requirements of users. However, in related technologies, most of the adjustment methods of the lumbar support are manual, and the steps required to adjust the position of the lumbar support are cumbersome, resulting in a poor user experience. Therefore, improvement is needed. Summary of the Utility Model

[0003] The utility model provides a lumbar support adjusting mechanism and a seat, and the lumbar support adjusting mechanism can simplify the steps and difficulty for users to adjust the height position of the lumbar support.

[0004] The lumbar support adjusting mechanism according to the first aspect embodiment of the utility model includes: a first sliding seat and a first sliding member. The first sliding member is adapted to be connected to the lumbar support and is slidably disposed on the first sliding seat in the up-and-down direction. A first spring is connected between the first sliding member and the first sliding seat, and the first spring is used to drive the first sliding member to move upward relative to the first sliding seat.

[0005] According to the lumbar support adjusting mechanism of the first aspect embodiment of the utility model, through the cooperation of the first sliding member, the first sliding seat and the first spring, the user only needs to sit down and lean on the lumbar support to adjust the height position of the lumbar support and ensure that the lumbar support can stably support the user's waist, thereby simplifying the steps and difficulty for the user to adjust the height position of the lumbar support, and improving the user experience while ensuring the comfort of the seat.

[0006] According to some embodiments of the utility model, a chute extending in the up-and-down direction and penetrating in the left-and-right direction is formed on the first sliding seat. A slide bar extending in the left-and-right direction is disposed in the chute. The slide bar is slidable along the extending direction of the chute and a plurality of them are arranged in the up-and-down direction. Both ends of the slide bar extend out of the left and right side surfaces of the first sliding seat and are connected to the first sliding member.

[0007] According to some embodiments of the utility model, in the direction from back to front, the chute extends obliquely downward.

[0008] According to some embodiments of the utility model, the included angle range between the extending direction of the chute and the horizontal direction is 60°-75°.

[0009] According to some embodiments of the present utility model, the first sliding member includes a main body portion and two connecting portions respectively connected to the left and right ends of the main body portion. The main body portion is located on the front side of the first sliding seat, and the two connecting portions are respectively located on the left and right sides of the first sliding seat and are respectively connected to the two ends of the sliding rod.

[0010] According to some embodiments of the present utility model, the first sliding seat is formed with an installation cavity for accommodating the first spring. One end of the first spring is fixed on the inner side surface of the installation cavity, the first sliding member has a spring connecting portion inserted into the installation cavity, and the other end of the first spring is fixed on the spring connecting portion.

[0011] According to some embodiments of the present utility model, the first sliding seat includes an installation box and a cover body that are respectively independently formed. The installation box has an opening that opens forward, the cover body is disposed at the opening and jointly defines the installation cavity with the installation box, and an avoidance hole for inserting the spring connecting portion is formed on the cover body.

[0012] According to some embodiments of the present utility model, the lumbar support adjusting mechanism further includes: a lumbar support connecting member. The first sliding member is adapted to be connected to the lumbar support through the lumbar support connecting member. The lower end of the lumbar support connecting member is rotatably disposed on the first sliding member, the rotation axis of the lumbar support connecting member extends in the left-right direction, and a second spring is disposed between the lumbar support connecting member and the first sliding member. The second spring is used to drive the upper end of the lumbar support connecting member to move forward.

[0013] According to some embodiments of the present utility model, a chute extending in the up-down direction and penetrating in the left-right direction is formed on the first sliding seat. A sliding rod extending in the left-right direction is disposed in the chute. The sliding rod is slidable along the extending direction of the chute and a plurality of sliding rods are arranged in the up-down direction. The two ends of the sliding rod respectively extend out of the left and right side surfaces of the first sliding seat and are both connected to the first sliding member. The lower end of the lumbar support connecting member is rotatably connected to one of the sliding rods; and / or, a first limiting structure is disposed on one of the first sliding seat and the lumbar support connecting member, and a second limiting structure is disposed on the other of the first sliding seat and the lumbar support connecting member. The first limiting structure and the second limiting structure cooperate to limit the rotation amplitude of the lumbar support connecting member relative to the first sliding seat.

[0014] According to some embodiments of the present utility model, the lumbar support adjusting mechanism further includes: a second slider, the first sliding seat is disposed on the second slider; a second sliding seat, the second slider is slidably disposed on the second sliding seat in the front-back direction; a third spring, disposed between the second slider and the second sliding seat and configured to drive the second slider to move forward; a locking module, the locking module is disposed on the second sliding seat and is switchable between a locked state and an unlocked state. In the locked state, the locking module locks the position between the second slider and the second sliding seat. In the unlocked state, the second slider is slidable relative to the second sliding seat.

[0015] According to some embodiments of the present utility model, a moving track groove extending in the front-back direction is formed on the second slider, and a locking card slot is disposed on one side of the moving track groove in the width direction and communicated with the moving track groove. A plurality of the locking card slots are arranged at intervals in the front-back direction. The locking module includes: a locking block and a control component. The locking block is rotatably disposed on the second sliding seat and is formed with a locking protrusion. The control component is configured to control the locking block to switch between a first position and a second position. Wherein, in the first position, the locking protrusion is located in the moving track groove, and the locking module is in the unlocked state. In the second position, the locking protrusion is located in the locking card slot, and the locking module is in the locked state.

[0016] According to some embodiments of the present utility model, the control component includes: a fourth spring, disposed between the locking block and the first sliding seat, the fourth spring is configured to drive the locking block to rotate towards the first position; an adjusting handle, configured to drive the locking block to rotate towards the second position and includes a rotating connection portion and a matching portion. A clamping protrusion facing the adjusting handle is further formed on the locking block. In the second position, the matching portion is located below the clamping protrusion and abuts against the clamping protrusion.

[0017] A seat according to an embodiment of the second aspect of the present utility model includes: the above-mentioned lumbar support adjusting mechanism.

[0018] According to the seat of the embodiment of the second aspect of the present utility model, through the cooperation of the first sliding member, the first sliding seat and the first spring, the user only needs to sit down and lean against the lumbar support to adjust the height position of the lumbar support and ensure that the lumbar support can stably support the user's waist, thereby simplifying the steps and difficulty of the user adjusting the height position of the lumbar support, and improving the user experience while ensuring the comfort of the seat.

[0019] According to some embodiments of the present utility model, the seat further includes a backrest, and the lumbar support is independent of the backrest.

[0020] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an exploded view of a lumbar support adjusting mechanism and a lumbar support according to an embodiment of the present utility model;

[0022] Figure 2 is an exploded view of the lumbar support adjusting mechanism and the lumbar support from another angle according to an embodiment of the present utility model;

[0023] Figure 3 is a schematic diagram of the lumbar support adjusting mechanism and the lumbar support according to an embodiment of the present utility model;

[0024] Figure 4 is a cross-sectional view of the lumbar support adjusting mechanism and the lumbar support in one state according to an embodiment of the present utility model;

[0025] Figure 5 is a cross-sectional view of the lumbar support adjusting mechanism and the lumbar support in another state according to an embodiment of the present utility model;

[0026] Figure 6 is a cross-sectional view of the lumbar support adjusting mechanism according to an embodiment of the present utility model, at this time the locking module is in a locked state;

[0027] Figure 7 is a cross-sectional view of the lumbar support adjusting mechanism according to an embodiment of the present utility model, at this time the locking module is in an unlocked state;

[0028] Figure 8 is a schematic diagram of the second sliding seat and the locking module of the lumbar support adjusting mechanism according to an embodiment of the present utility model;

[0029] Figure 9 is a schematic diagram of the first sliding seat, the second slider and the first spring of the lumbar support adjusting mechanism according to an embodiment of the present utility model;

[0030] Figure 10 is a schematic diagram of the first sliding member of the lumbar support adjusting mechanism according to an embodiment of the present utility model.

[0031] Reference Signs:

[0032] 100, Lumbar support adjustment mechanism; 10a, First spring; 10b, Second spring; 10c, Third spring; 1, First sliding seat; 11, Installation box; 111, Chute; 112, Installation cavity; 113, Fixing structure; 12, Cover body; 121, Avoidance hole; 2, First sliding member; 21, Main body part; 211, Positioning column; 22, Connecting part; 221, First assembly hole; 23, Spring connecting part; 24, First limiting structure; 3, Slide bar; 4, Lumbar support connecting piece; 41, Second limiting structure; 42, Front plate; 421, Limiting groove; 43, Top plate; 44, First side plate; 45, Second side plate; 46, Second assembly hole; 5, Second slider; 51, Moving track groove; 52, Locking card slot; 6, Second sliding seat; 61, Sliding cavity; 62, Matching through hole; 7, Locking module; 71, Locking block; 711, Locking protrusion; 712, Clamping protrusion; 721, Fourth spring; 722, Adjusting handle; 7221, Rotating connection part; 7222, Matching part; 8, Protective cover; 200, Lumbar support. Detailed implementation mode

[0033] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention.

[0034] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the applicability of other processes and / or the use of other materials.

[0035] The lumbar support adjustment mechanism 100 according to the first aspect embodiment of the present invention will be described below with reference to the drawings.

[0036] As Figures 1 to 10As shown, the lumbar support adjusting mechanism 100 according to the first aspect embodiment of the present utility model includes: a first sliding seat 1 and a first sliding member 2. The first sliding member 2 is adapted to be connected to the lumbar support 200 and is slidably disposed on the first sliding seat 1 in the up and down direction. A first spring 10a is connected between the first sliding member 2 and the first sliding seat 1. The first spring 10a is used to drive the first sliding member 2 to move upward relative to the first sliding seat 1. That is to say, the first spring 10a has a tendency to drive the first sliding member 2 to slide upward relative to the first sliding seat 1. When the user sits down and leans the waist on the lumbar support 200, a downward sliding thrust is applied to the first sliding member 2 through the lumbar support 200 to push the first sliding member 2 to stretch the first spring 10a and move downward, thereby adjusting the position of the lumbar support 200 in the up and down direction to meet the different height position requirements of different users for the lumbar support 200. At the same time, under the action of the first spring 10a, the lumbar support 200 can be kept in a state of stably supporting the user's waist upward to improve the supporting effect of the lumbar support 200. When the user gets up, the thrust acting on the first spring 10a disappears, and the lumbar support 200 can move upward and reset under the action of the first spring 10a.

[0037] Therefore, through the cooperation of the first sliding member 2, the first sliding seat 1 and the first spring 10a, the user only needs to sit down and lean on the lumbar support 200 to adjust the height position of the lumbar support 200 and ensure that the lumbar support 200 can stably support the user's waist, thereby simplifying the steps and difficulty of the user adjusting the height position of the lumbar support 200 to improve the user experience while ensuring the comfort of the seat.

[0038] The lumbar support adjusting mechanism 100 according to the first aspect embodiment of the present utility model, through the cooperation of the first sliding member 2, the first sliding seat 1 and the first spring 10a, the user only needs to sit down and lean on the lumbar support 200 to adjust the height position of the lumbar support 200 and ensure that the lumbar support 200 can stably support the user's waist, thereby simplifying the steps and difficulty of the user adjusting the height position of the lumbar support 200 to improve the user experience while ensuring the comfort of the seat.

[0039] According to some embodiments of the present utility model, a chute 111 extending in the up-and-down direction and penetrating in the left-and-right direction is formed on the first sliding seat 1. A sliding rod 3 extending in the left-and-right direction is arranged in the chute 111. A plurality of sliding rods 3 extending in the up-and-down direction are arranged in the chute 111 in a slidable manner. Both ends of the sliding rod 3 extend out of the left and right side surfaces of the first sliding seat 1 and are connected to the first sliding member 2. That is to say, the first sliding member 2 is connected to the first sliding seat 1 through a plurality of sliding rods 3, and the sliding connection between the first sliding member 2 and the first sliding seat 1 is realized by the up-and-down sliding of the plurality of sliding rods 3 in the chute 111. Therefore, by arranging a plurality of sliding rods 3, the moving direction of the first sliding member 2 can be restricted to avoid position deviation when the first sliding member 2 moves. In addition, by arranging the cooperation of the sliding rod 3 and the chute 111, the connection difficulty between the first sliding member 2 and the first sliding seat 1 can be reduced, and the structure of the first sliding member 2 can be simplified. For example, only a first assembly hole 221 for connecting with the sliding rod 3 needs to be arranged on the first sliding member 2, and there is no need to additionally arrange a sliding connection structure.

[0040] In a specific example, the cross-section of the sliding rod 3 is circular, so that the frictional resistance between the sliding rod 3 and the inner side surface of the chute 111 can be reduced, and the sliding rod 3 can slide more smoothly in the chute 111 in the up-and-down direction. In addition, two sliding rods 3 are arranged at parallel intervals in the up-and-down direction, so that the number of sliding rods 3 can be saved while ensuring the sliding stability.

[0041] According to some embodiments of the present utility model, in the direction from back to front, the chute 111 extends obliquely downward. That is to say, when the sliding rod 3 moves downward along the chute 111, it will move forward at the same time, so that the first sliding member 2 can drive the lumbar support 200 to move forward when sliding downward relative to the first sliding seat 1. Therefore, when the user leans on the lumbar support 200, when the first sliding member 2 bears the thrust transmitted by the lumbar support 200 and moves downward, it will drive the lumbar support 200 to move forward at the same time, so that the lumbar support 200 can be closely attached to the user's waist to improve the support effect of the lumbar support 200.

[0042] According to some embodiments of the present utility model, the included angle range between the extending direction of the sliding groove 111 and the horizontal direction is 60° - 75°. Among them, the smaller the included angle between the extending direction of the sliding groove 111 and the horizontal direction, the longer the distance that the first sliding member 2 drives the lumbar support 200 to move forward when sliding downward, but the greater the force required for the user to push the first sliding member 2 to slide downward relative to the first sliding seat 1 through the lumbar support 200; conversely, the larger the included angle between the extending direction of the sliding groove 111 and the horizontal direction, the shorter the distance that the first sliding member 2 drives the lumbar support 200 to move forward when sliding downward, but the smaller the force required for the user to push the first sliding member 2 to slide downward relative to the first sliding seat 1 through the lumbar support 200. Therefore, setting the included angle between the extending direction of the sliding groove 111 and the horizontal direction within the range of 60° to 75° can avoid the problem that it is difficult to adjust the position of the lumbar support 200 due to the excessive force required for the user to push the lumbar support 200, and at the same time can avoid the poor supporting effect of the lumbar support 200 due to the too short distance that the lumbar support 200 can move forward, thereby improving the supporting effect of the lumbar support 200 while reducing the adjustment difficulty of the lumbar support 200. For example, the included angle between the extending direction of the sliding groove 111 and the horizontal direction can be 60°, 63°, 65°, 67°, 70°, 72°, 75°, etc., and no specific limitation is made here.

[0043] According to some embodiments of the present utility model, the first sliding member 2 includes a main body portion 21 and two connecting portions 22 respectively connected to the left and right ends of the main body portion 21. The main body portion 21 is located on the front side of the first sliding seat 1, and the two connecting portions 22 are respectively located on the left and right sides of the first sliding seat 1 and are respectively connected to the two ends of the sliding rod 3. That is to say, at least part of the first sliding seat 1 is located between the connecting portions 22 on both sides, so that the sliding freedom degree of the first sliding seat 1 in the left - right direction can be better restricted through the connecting portions 22 on both sides, thereby improving the connection stability between the first sliding seat 1 and the first sliding member 2. In addition, the first sliding member 2 is connected to the two ends of the sliding rod 3 through the two connecting portions 22, and the two connecting portions 22 are respectively located on the left and right sides of the first sliding seat 1, which is convenient for the connecting portions 22 to be connected to the ends of the sliding rod 3, and at the same time can restrict the movement of the sliding rod 3 in the left - right direction to prevent the sliding rod 3 from disengaging from the sliding groove 111.

[0044] According to some embodiments of the present utility model, the first sliding seat 1 is formed with an installation cavity 112 for accommodating the first spring 10a. One end of the first spring 10a is fixed on the inner side surface of the installation cavity 112. The first sliding member 2 has a spring connection portion 23 inserted into the installation cavity 112, and the other end of the first spring 10a is fixed on the spring connection portion 23. That is to say, the first spring 10a is located in the installation cavity 112, and the first sliding seat 1 can provide a good protection effect on the first spring 10a to prevent the first spring 10a from colliding and interfering with other components, thereby improving the anti-interference ability of the first spring 10a to enhance the stability of the first spring 10a. At the same time, by inserting the spring connection portion 23 into the installation cavity 112, it is convenient to connect the first spring 10a with the spring connection portion 23, and the connection difficulty between the first spring 10a and the first sliding member 2 can be reduced.

[0045] According to some embodiments of the present utility model, the first sliding seat 1 includes an installation box 11 and a cover 12 that are separately and independently formed. The installation box 11 has an opening that opens forward. The cover 12 is disposed at the opening and jointly defines the installation cavity 112 with the installation box 11. The cover 12 is formed with an avoidance hole 121 through which the spring connection portion 23 can be inserted. Therefore, before installing the cover 12 onto the installation box 11, the spring connection portion 23 can be inserted into the avoidance hole 121 first, and then one end of the first spring 10a is connected to the part of the spring connection portion 23 inserted into the avoidance hole 121, and then the cover 12 is installed at the opening of the installation cavity 112 of the installation box 11. That is, by setting the installation box 11 and the cover 12 separately and providing the avoidance hole 121 on the cover 12, a larger operation space can be provided for the connection of the first spring 10a and the spring connection portion 23 before the cover 12 is installed onto the installation box 11, thereby reducing the connection difficulty between the first spring 10a and the spring connection portion 23 and improving the assembly efficiency of the lumbar support adjusting mechanism 100.

[0046] In a specific example, a fixing structure 113 is formed on the inner side surface of the installation cavity 112. The fixing structure 113 is disposed adjacent to the top of the installation cavity 112. The upper end of the first spring 10a is fixed on the fixing structure 113. The spring connection portion 23 is located below the fixing structure 113, and the lower end of the first spring 10a is fixed on the spring connection portion 23. Wherein, through holes can be formed on both the fixing structure 113 and the spring connection portion 23 for connecting with the first spring 10a. In addition, the first spring 10a is located behind the sliding rod 3 and is generally parallel to the extending direction of the sliding groove 111, thereby avoiding interference between the first spring 10a and the sliding rod 3 and ensuring the consistency of the deformation direction of the first spring 10a and the sliding direction of the first sliding member 2.

[0047] According to some embodiments of the present utility model, the lumbar support adjusting mechanism 100 further includes a lumbar support connecting member 4. The first sliding member 2 is adapted to be connected to the lumbar support 200 through the lumbar support connecting member 4. The lower end of the lumbar support connecting member 4 is rotatably provided on the first sliding member 2. The rotation axis of the lumbar support connecting member 4 extends in the left-right direction. A second spring 10b is provided between the lumbar support connecting member 4 and the first sliding member 2. The second spring 10b is used to drive the upper end of the lumbar support connecting member 4 to move forward. That is to say, the second spring 10b has a tendency to drive the upper end of the lumbar support connecting member 4 to move forward. As Figure 5 shown, when the user sits down and leans the waist against the lumbar support 200, a backward thrust is applied to the lumbar support connecting member 4 through the lumbar support 200, so that the lumbar support connecting member 4 rotates counterclockwise around the rotation axis to increase the elevation angle of the lumbar support 200, thereby meeting the different elevation angle requirements of different users for the lumbar support 200. At the same time, under the action of the second spring 10b, the lumbar support 200 can be kept in a state of stably supporting the user's waist forward to improve the support effect of the lumbar support 200. When the user gets up, as Figure 4 shown, the thrust acting on the second spring 10b disappears, and the lumbar support connecting member 4 can rotate clockwise around the rotation axis and reset under the action of the second spring 10b.

[0048] Therefore, through the cooperation of the first sliding member 2, the first sliding seat 1, the first spring 10a, the lumbar support connecting member 4 and the second spring 10b, the user only needs to sit down and lean against the lumbar support 200 to adjust the height position and elevation angle of the lumbar support 200, and ensure that the lumbar support 200 can stably support the user's waist, thereby simplifying the steps and difficulty of the user to adjust the height position and elevation angle of the lumbar support 200, so as to improve the user experience while ensuring the comfort of the seat.

[0049] In a specific example, the lumbar support connecting member 4 and the lumbar support 200 are integrally formed, which can reduce the number of parts of the seat, and at the same time, the steps and connecting components for connecting the lumbar support connecting member 4 and the lumbar support 200 can be omitted.

[0050] According to some embodiments of the present utility model, a chute 111 extending in the up-down direction and penetrating in the left-right direction is formed on the first sliding seat 1. A slide bar 3 extending in the left-right direction is provided in the chute 111. The slide bar 3 is slidable along the extension direction of the chute 111 and a plurality of them are arranged in the up-down direction. Both ends of the slide bar 3 extend out of the left and right side surfaces of the first sliding seat 1 and are both connected to the first sliding member 2. The lower end of the lumbar support connecting member 4 is rotatably connected to one of the slide bars 3. That is to say, the rotational connection between the lumbar support connecting member 4 and the first sliding member 2 and the sliding connection between the first sliding member 2 and the first sliding seat 1 can share the same slide bar 3, thereby omitting the connecting components for connecting the lumbar support connecting member 4 and the first sliding member 2 to reduce the connection cost of the lumbar support connecting member 4.

[0051] According to some embodiments of the present utility model, one of the first sliding seat 1 and the lumbar support connecting member 4 is provided with a first limiting structure 24, and the other of the first sliding seat 1 and the lumbar support connecting member 4 is provided with a second limiting structure 41. The first limiting structure 24 cooperates with the second limiting structure 41 to limit the rotation amplitude of the lumbar support connecting member 4 relative to the first sliding seat 1. Therefore, through the cooperation of the first limiting structure 24 and the second limiting structure 41, the rotation angle of the lumbar support 200 can be preferably limited, thereby ensuring the controllability of the elevation adjustment range of the lumbar support 200.

[0052] In a specific example, the first limiting structure 24 is a convex block provided at one end of the upper slide bar 3, that is, the first limiting structure 24 is provided on the first sliding seat 1 through the slide bar 3. The first limiting structure 24 is located outside the first sliding member 2 in the left-right direction. The lumbar support connecting member 4 includes a front plate 42, a top plate 43, a first side plate 44, and a second side plate 45. The top plate 43 is connected to the upper end of the front plate 42. The first side plate 44 and the second side plate 45 are respectively connected to the left and right sides of the front plate 42 and are respectively located on the left and right sides of the first sliding member 2. The second limiting structure 41 is a groove formed on the inner side surface of the first side plate 44. The first limiting structure 24 is located within the second limiting structure 41. The second limiting structure 41 is formed with a first limiting surface and a second limiting surface spaced apart in the front-rear direction. The first limiting surface and the second limiting surface are used to limit the movement stroke of the first limiting structure 24 in the front-rear direction. A limiting groove 421 is formed on the rear side surface of the front plate 42. The front end of the second spring 10b is located within the limiting groove 421. A positioning post 211 is provided on the front side surface of the first sliding member 2. The rear end of the second spring 10b is sleeved on the positioning post 211.

[0053] In addition, both connecting portions 22 are formed with two first assembly holes 221 arranged in the up-down direction. The first side plate 44 and the second side plate 45 are formed with second assembly holes 46 arranged oppositely. The upper slide bar 3 simultaneously passes through the two upper first assembly holes 221 and the sliding groove 111, and the slide bar 3 and the first sliding member 2 are connected by a fastener. The lower slide bar 3 simultaneously passes through the two lower first assembly holes 221 and the two second assembly holes 46, and the slide bar 3, the first sliding member 2, and the lumbar support connecting member 4 are connected by a fastener.

[0054] According to some embodiments of the present utility model, the lumbar support adjusting mechanism 100 further includes: a second slider 5, a second sliding seat 6, a third spring 10c, and a locking module 7. The first sliding seat 1 is disposed on the second slider 5, the second slider 5 is slidably disposed on the second sliding seat 6 in the front-rear direction, the third spring 10c is disposed between the second slider 5 and the second sliding seat 6 and is used to drive the second slider 5 to move forward. The locking module 7 is disposed on the second sliding seat 6 and can be switched between a locked state and an unlocked state. In the locked state, the locking module 7 locks the position between the second slider 5 and the second sliding seat 6. In the unlocked state, the second slider 5 is slidable relative to the second sliding seat 6. That is to say, the third spring 10c has a tendency to drive the second slider 5 to move forward relative to the second sliding seat 6. In the unlocked state, the user can apply a thrust to the second slider 5 by leaning on the lumbar support 200 to compress the third spring 10c, so as to flexibly adjust the position of the lumbar support 200 in the front-rear direction. In the locked state, the locking module 7 can lock the position of the second slider 5 in the front-rear direction, so as to lock the position of the lumbar support 200 in the front-rear direction to improve the stability of the lumbar support 200 in supporting the human waist.

[0055] According to some embodiments of the present utility model, a moving track groove 51 extending in the front-rear direction is formed on the second slider 5, and a locking slot 52 is disposed on one side of the moving track groove 51 in the width direction and communicates with the moving track groove 51. A plurality of locking slots 52 are arranged at intervals in the front-rear direction. The locking module 7 includes: a locking block 71 and a control component. The locking block 71 is rotatably disposed on the second sliding seat 6 and forms a locking protrusion 711. The control component is used to control the locking block 71 to switch between a first position and a second position. Wherein, in the first position, the locking protrusion 711 is located in the moving track groove 51, and the locking module 7 is in the unlocked state. In the second position, the locking protrusion 711 is located in the locking slot 52, and the locking module 7 is in the locked state. That is to say, the user can drive the locking block 71 to rotate through the control component, so that the locking protrusion 711 moves between the moving track groove 51 and the locking slot 52 to realize the switching of the locking block 71 between the first position and the second position. When the locking block 71 switches to the first position, the locking protrusion 711 moves into the moving track groove 51, and the locking protrusion 711 is slidable in the moving track groove 51 in the front-rear direction, so that the second slider 5 can move relative to the second sliding seat 6 in the front-rear direction to adjust the position of the lumbar support 200 in the front-rear direction. When the locking block 71 switches to the second position, the locking protrusion 711 moves into the locking slot 52, and the position of the locking protrusion 711 in the front-rear direction can be restricted through the locking slot 52, so as to lock the position of the second slider 5 in the front-rear direction to realize the locking of the position of the lumbar support 200 in the front-rear direction.

[0056] In a specific example, the second slider 5 is provided at the rear side of the first sliding seat 1. In addition, the second slider 5 is integrally formed with the mounting box 11. The second sliding seat 6 has a sliding cavity 61 that opens forward. The second slider 5 is slidably provided in the sliding cavity 61 in the front-rear direction. A mating through hole 62 is formed on a portion of the second sliding seat 6 located on the outer peripheral side of the sliding cavity 61. The locking block 71 is provided on the outer surface of the second sliding seat 6 and is located at the mating through hole 62. The locking protrusion 711 is adapted to cooperate with the moving track groove 51 and the locking card slot 52 through the mating through hole 62. Secondly, the lumbar support adjusting mechanism 100 further includes a protective cover 8. The protective cover 8 is provided on the outer surface of the second sliding seat 6 and covers the outer peripheral sides of the mating portion 7222, the locking block 71, and the fourth spring 721 to protect the mating portion 7222, the locking block 71, and the fourth spring 721.

[0057] According to some embodiments of the present invention, the control assembly includes: a fourth spring 721 and an adjusting handle 722. The fourth spring 721 is provided between the locking block 71 and the first sliding seat 1. The fourth spring 721 is used to drive the locking block 71 to rotate towards the first position. The adjusting handle 722 is used to drive the locking block 71 to rotate towards the second position and includes a rotating connection portion 7221 and a mating portion 7222. A clamping protrusion 712 is further formed on the locking block 71 facing the adjusting handle 722. In the second position, the mating portion 7222 is located below the clamping protrusion 712 and abuts against the clamping protrusion 712. That is to say, the fourth spring 721 has a tendency to drive the locking block 71 to rotate towards the first position. When the user drives the locking block 71 to move towards the second position through the adjusting handle 722, the fourth spring 721 is compressed and deformed. Through the abutment of the mating portion 7222 and the clamping protrusion 712, the locking between the adjusting handle 722 and the locking block 71 located in the second position is achieved to prevent the locking block 71 from disengaging from the second position, thereby ensuring the reliability of the control assembly for locking the second slider 5. When the user releases the cooperation between the mating portion 7222 and the clamping protrusion 712 through the adjusting handle 722, the fourth spring 721 restores its elastic deformation and pushes the locking block 71 to move towards the first position, thereby unlocking the second slider 5.

[0058] In some embodiments, the first sliding seat 1, the first sliding member 2, the lumbar support connecting member 4, the sliding rod 3, the second sliding seat 6, and the second slider 5 are all plastic parts. The plastic parts are light in weight, low in cost, and easy to process and form, thereby reducing the weight, cost, and manufacturing difficulty of the first sliding seat 1, the first sliding member 2, the lumbar support connecting member 4, the sliding rod 3, the second sliding seat 6, and the second slider 5.

[0059] In some embodiments, the locking block 71 and the adjusting handle 722 are metal parts. The metal parts have high strength and wear resistance, thereby improving the strength and wear resistance of the locking block 71 and the adjusting handle 722 to enhance the reliability of the locking block 71 and the adjusting handle 722.

[0060] The seat according to the embodiment of the second aspect of the present invention will be described below with reference to the accompanying drawings.

[0061] The seat according to the embodiment of the second aspect of the present invention includes: a lumbar support adjusting mechanism 100.

[0062] In the seat according to the embodiment of the second aspect of the present invention, through the cooperation of the first sliding member 2, the first sliding seat 1 and the first spring 10a, the user only needs to sit down and lean on the lumbar support 200 to adjust the height position of the lumbar support 200 and ensure that the lumbar support 200 can stably support the user's waist, thereby simplifying the steps and difficulty of the user adjusting the height position of the lumbar support 200, and improving the user experience while ensuring the comfort of the seat.

[0063] According to some embodiments of the present invention, it further includes a backrest, and the lumbar support 200 is independent of the backrest. Therefore, the user can adjust the position of the lumbar support 200 alone, thereby avoiding the change of the position of the backrest when adjusting the lumbar support 200 and improving the flexibility of the seat adjustment.

[0064] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0066] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lumbar support adjusting mechanism, characterized in that, Comprising: A first sliding seat; A first sliding member, adapted to be connected to a lumbar support and slidably disposed on the first sliding seat in the up-down direction. A first spring is connected between the first sliding member and the first sliding seat, and the first spring is used to drive the first sliding member to move upward relative to the first sliding seat.

2. The lumbar support adjusting mechanism according to claim 1, characterized in that, A chute extending in the up-down direction and penetrating in the left-right direction is formed on the first sliding seat. A slide bar extending in the left-right direction is disposed in the chute. The slide bar is slidable along the extending direction of the chute and a plurality of them are arranged in the up-down direction. Both ends of the slide bar respectively protrude from the left and right side surfaces of the first sliding seat and are connected to the first sliding member.

3. The lumbar support adjusting mechanism according to claim 2, characterized in that, In the direction from back to front, the chute extends obliquely downward.

4. The lumbar support adjusting mechanism according to claim 3, characterized in that, The included angle range between the extending direction of the chute and the horizontal direction is 60° - 75°.

5. The lumbar support adjusting mechanism according to claim 2, characterized in that, The first sliding member includes a main body portion and two connecting portions respectively connected to the left and right ends of the main body portion. The main body portion is located on the front side of the first sliding seat. The two connecting portions are respectively located on the left and right sides of the first sliding seat and are respectively connected to both ends of the slide bar.

6. The lumbar support adjusting mechanism according to claim 1, characterized in that, The first sliding seat forms an installation cavity for accommodating the first spring. One end of the first spring is fixed on the inner side surface of the installation cavity. The first sliding member has a spring connecting portion inserted into the installation cavity, and the other end of the first spring is fixed on the spring connecting portion.

7. The lumbar support adjusting mechanism according to claim 6, characterized in that, The first sliding seat includes an installation box and a cover body which are respectively independently formed. The installation box has an opening opening forward. The cover body is disposed at the opening and jointly defines the installation cavity with the installation box. An avoidance hole for inserting the spring connecting portion is formed on the cover body.

8. The lumbar support adjusting mechanism according to claim 1, wherein, Further comprising: A lumbar support connecting member. The first sliding member is adapted to be connected to the lumbar support through the lumbar support connecting member. The lower end of the lumbar support connecting member is rotatably disposed on the first sliding member. The rotation axis of the lumbar support connecting member extends in the left-right direction. A second spring is disposed between the lumbar support connecting member and the first sliding member, and the second spring is used to drive the upper end of the lumbar support connecting member to move forward.

9. The lumbar support adjusting mechanism according to claim 8, wherein, A chute extending in the up-down direction and penetrating in the left-right direction is formed on the first sliding seat. A slide bar extending in the left-right direction is disposed in the chute. The slide bar is slidable along the extending direction of the chute and a plurality of them are arranged in the up-down direction. Both ends of the slide bar respectively protrude from the left and right side surfaces of the first sliding seat and are connected to the first sliding member. The lower end of the lumbar support connecting member is rotatably connected to one of the slide bars; and / or, a first limiting structure is provided on one of the first sliding seat and the lumbar support connecting member, and a second limiting structure is provided on the other of the first sliding seat and the lumbar support connecting member. The first limiting structure cooperates with the second limiting structure to limit the rotation amplitude of the lumbar support connecting member relative to the first sliding seat.

10. The lumbar support adjusting mechanism according to claim 1, characterized in that, Further comprising: A second slider, on which the first sliding seat is disposed; A second sliding seat, on which the second slider is slidably disposed in the front-back direction; A third spring, disposed between the second slider and the second sliding seat and used to drive the second slider to move forward; A locking module is provided on the second sliding seat and is switchable between a locked state and an unlocked state. In the locked state, the locking module locks the position between the second slider and the second sliding seat. In the unlocked state, the second slider is slidable relative to the second sliding seat.

11. The lumbar support adjusting mechanism according to claim 10, characterized in that, A moving track groove extending in the front-rear direction is formed on the second slider, and a locking card slot is provided on one side in the width direction of the moving track groove and communicates with the moving track groove. A plurality of the locking card slots are arranged at intervals in the front-rear direction. The locking module includes a locking block and a control component. The locking block is rotatably provided on the second sliding seat and is formed with a locking protrusion. The control component is used to control the switching of the locking block between a first position and a second position. Among them, In the first position, the locking protrusion is located in the moving track groove, and the locking module is in the unlocked state. In the second position, the locking protrusion is located in the locking card slot, and the locking module is in the locked state.

12. The lumbar support adjusting mechanism according to claim 11, wherein, The control component includes: A fourth spring is provided between the locking block and the first sliding seat. The fourth spring is used to drive the locking block to rotate towards the first position. An adjusting handle is used to drive the locking block to rotate towards the second position and includes a rotating connection part and a matching part. A clamping protrusion facing the adjusting handle is further formed on the locking block. In the second position, the matching part is located below the clamping protrusion and abuts against the clamping protrusion.

13. A seat, characterized in that, Including: The lumbar support adjusting mechanism according to any one of claims 1-12.

14. The seat according to claim 13, characterized in that, It further includes a backrest, and the lumbar support is independent of the backrest.

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