Self-adaptive waist support assembly and seat

Abstract

The utility model discloses a self-adaptive waist support assembly and a seat. The self-adaptive waist support assembly comprises a mounting seat, a movable seat, a waist support, an elastic piece and a locking mechanism, the movable seat is movably connected to the mounting seat so that the movable seat can move relative to the mounting seat in the front-back direction, and the elastic piece is arranged between the mounting seat and the movable seat and used for applying forward elastic stress to the movable seat; a plurality of clamping parts arranged front and back are arranged on the movable seat, the locking mechanism is arranged on the mounting seat, locking ends matched with the clamping parts are arranged on the locking mechanism, and the locking ends are used for moving between a first position close to the movable seat and a second position away from the movable seat. The position of the waist support can be quickly adjusted, a user does not need to leave the seat in the adjusting process, the convenience of adjusting the waist support is improved, and the seat is easy and convenient to use.

Description

Technical Field

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

[0002] Traditional seats include a seat cushion and a backrest. When using the seat, the backrest supports the user's back, and the user's waist is in a suspended state. Since the waist cannot be supported, the comfort of the seat is poor. To improve the above defects of traditional seats, some existing office seats, gaming seats, etc. usually are equipped with a lumbar support to provide support for the user's waist to relieve lumbar fatigue. However, in the currently equipped seats with lumbar supports, the position of the lumbar support is fixed and it is difficult to provide better support for users with different body shapes and sitting postures. Therefore, some seats are equipped with a lumbar support adjustment mechanism to adjust the lumbar support back and forth to adapt to different body shapes and sitting postures of users. Although this adjustment mechanism can change the position of the lumbar support to make the lumbar support in a more appropriate support position, during its use, it usually requires the user to adjust the lumbar support multiple times, and the use process is more cumbersome. Moreover, there is a certain distance between multiple gears in the adjustment mechanism, and it is difficult to make the lumbar support in the best support position. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an adaptive lumbar support assembly and a seat, which can adapt to the sitting posture and body shape of the user, make the lumbar support in the best support position, and have high usability.

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

[0005] An adaptive lumbar support assembly, including a mounting seat, a movable seat, a lumbar support connected to the movable seat, an elastic member, and a locking mechanism;

[0006] The movable seat is movably connected to the mounting seat so that the movable seat can move relative to the mounting seat in the front-back direction. The elastic member is arranged between the mounting seat and the movable seat and is used to apply an elastic stress forward to the movable seat;

[0007] A plurality of card positions are arranged in the front-back direction on the movable seat. The locking mechanism is arranged on the mounting seat, and a locking end matching the card position is arranged on the locking mechanism. The locking end is used to move between a first position close to the movable seat and a second position far from the movable seat. When the locking end is in the first position, the locking end is combined with one of the card positions to limit the freedom degree of the movable seat moving relative to the mounting seat in the front-back direction. When the locking end is in the second position, the locking end is disengaged from the card position so that the movable seat can move relative to the mounting seat in the front-back direction.

[0008] Preferably, the locking mechanism includes a locking member, an operating member for pushing the locking member towards the movable seat, and an elastic return member. The locking end is located on the side of the locking member facing the movable seat. The elastic return member is arranged between the mounting seat and the locking member, and is used to provide an elastic stress for pushing the locking member away from the movable seat so that the locking end on the locking member always has a tendency to move towards the second position.

[0009] Preferably, a chute extending backward from its front end surface is provided on the mounting seat, and the movable seat is slidably inserted into the chute; an installation groove is provided on the peripheral wall of the mounting seat, and an avoidance hole communicating with the chute is provided on the bottom wall of the installation groove. The locking member is movably arranged in the installation groove, and the locking end passes through the avoidance hole and is placed in the chute.

[0010] Preferably, the two parts of the bottom wall of the installation groove on both sides of the avoidance hole respectively form a supporting surface. The locking member includes a base and two wing plates respectively located on both sides of the base. The two wing plates are respectively located outside the two supporting surfaces. The locking end is arranged on the inner side surface of the base. The elastic return member includes two return springs, and the two return springs are respectively located between the two wing plates and the two supporting surfaces.

[0011] Preferably, the locking end is a convex tooth arranged on the inner side surface of the base, and the positioning part is a positioning groove arranged on the outer peripheral surface of the movable seat.

[0012] Preferably, the operating member is pivotally connected to the mounting seat, and includes a wrench and a cam fixedly matched with the wrench. The wrench is used to drive the cam to rotate so that the cam pushes the locking member towards the movable seat.

[0013] Preferably, a rear end wall is provided at the rear end part of the mounting seat so that the rear end part of the chute forms a blind end. A groove extending forward from its rear end surface is provided on the movable seat, and the front end part of the groove forms a blind end. The elastic member is a spring placed in the groove. The rear end part of the spring abuts against the end wall, and the front end part abuts against the blind end of the groove.

[0014] Preferably, a supporting sleeve extending forward is provided on the end wall. A stop wall is formed at the front end of the supporting sleeve. A guiding hole is provided in the middle of the stop wall. A guiding column is arranged inside the groove on the movable seat. The front end of the guiding column is fixedly connected to the blind end of the groove. The rear end of the guiding column passes through the guiding hole and is located on the front side of the stop wall. A stop piece is fixed at the rear end of the guiding column, and the stop piece cooperates with the stop wall to limit the maximum displacement of the guiding column moving forward.

[0015] Preferably, convex ribs extending forward and backward are provided on the inner wall surface of the chute and / or the outer peripheral surface of the mounting seat.

[0016] A seat, including the above-mentioned adaptive lumbar support assembly.

[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 movably connected to the mounting seat, and the elastic stress provided by the elastic member is used to support the movable seat. When the lumbar support is squeezed by the user's waist, it moves backward and compresses the elastic member. When the elastic stress of the elastic member reaches equilibrium with the squeezing force from the user's waist, the lumbar support moves to the optimal support position, enabling the lumbar support to adapt to the user's sitting posture and body shape. When using the seat, the user presses the lumbar support backward with their own waist. After the lumbar support reaches the optimal support position, the locking mechanism is operated to lock the movable seat and the mounting seat, quickly completing the adjustment of the position of the lumbar support. There is no need to leave the seat during the adjustment process, improving the convenience of adjusting the lumbar support and making the use of the seat simple and convenient. Description of the Drawings

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

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

[0021] Figure 3 is a schematic diagram of another use state of the present utility model;

[0022] Figure 4 is Figure 2 the A-A cross-sectional view of

[0023] Figure 5 is Figure 1 the schematic structural diagram of the locking member in

[0024] Wherein: 10, lumbar support; 20, movable seat; 21, clamping groove; 22, groove; 23, guide post; 24, retaining piece; 25, screw; 30, mounting seat; 301, end wall; 31, sliding groove; 32, mounting groove; 321, avoidance hole; 322, support surface; 33, support sleeve; 34, retaining wall; 35, guide hole; 36, rib; 40, locking member; 41, base; 42, wing plate; 43, convex tooth; 44, return spring; 50, wrench; 51, cam; 52, rotating shaft; 60, spring. Detailed Embodiment

[0025] 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 not conflicting with each other, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments. Except for special descriptions, 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 from beginning to end. The embodiments described 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.

[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 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.

[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 can be connected through an intermediate medium, and 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 situations.

[0028] Such as Figure 1 、 2As shown in Figures 3, 4, and 5, an adaptive lumbar support assembly of the present utility model includes a lumbar support 10, a mounting seat 30, a movable seat 20, a spring 60, and a locking mechanism. The lumbar support 10 is fixedly connected to the front end of the movable seat 20. The movable seat 20 is movably connected to the mounting seat 30, such that the movable seat 20 can drive the lumbar support 10 to move relative to the mounting seat 30 in the front-back direction. The mounting seat 30 can be fixedly connected to the backrest of the seat, so that the lumbar support 10 has the freedom to move relative to the backrest in the front-back direction. The spring 60 is disposed between the mounting seat 30 and the movable seat 20. Its front end abuts against the movable seat 20 and its rear end abuts against the mounting seat 30, enabling the spring 60 to apply a forward elastic stress to the movable seat 20. When the user's waist presses the lumbar support 10 backward, the lumbar support 10 drives the movable seat 20 to move backward against the mounting seat 30, compressing the spring 60. The greater the distance the lumbar support 10 moves backward, the greater the compression of the spring 60, and the greater the elastic stress it applies to the movable seat 20. When the pressure exerted on the lumbar support 10 by the user's waist is equal to the elastic stress of the spring 60, the lumbar support 10 moves to the optimal support position. Thus, the lumbar support 10 adapts to the user's sitting posture and body shape. A plurality of positioning portions arranged in the front-back direction are provided on the movable seat 20. The locking mechanism is provided on the mounting seat 30. A locking end is provided on the locking mechanism. The locking end is movably engaged with the mounting seat 30 and can move between a first position close to the movable seat 20 and a second position away from the movable seat 20. When the locking end is in the first position, the locking end engages with one of the positioning portions, locking the freedom of movement of the movable seat 20 relative to the mounting seat 30. At this time, the pressure exerted by the user's waist on the lumbar support 10 and the elastic stress of the spring 60 will not cause the movable seat 20 to move relative to the mounting seat 30. When the locking end is in the second position, the locking end moves away from the movable seat 20 and disengages from the positioning portion. At this time, the locking end and the positioning portion no longer limit the freedom of movement of the movable seat 20, enabling the movable seat 20 to move relative to the mounting seat 30 in the front-back direction. The lumbar support 10 can move backward under the extrusion of the user's waist or move forward under the elastic stress of the spring 60.

[0029] When the utility model is in use, the locking end of the locking mechanism can be transferred to the second position, so that the locking end is disengaged from the clamping portion on the movable seat 20. The locking mechanism does not limit the degree of freedom of the movable seat 20, and the lumbar support 10 is in a free state. The user's waist presses the lumbar support 10 backward, and the extrusion force reaches an equilibrium with the elastic stress of the spring 60, so that the lumbar support 10 moves to the optimal support position by itself to provide support for the user's waist. The user can also, when using the seat, use his / her waist to press the lumbar support 10 backward. After the lumbar support 10 moves to the optimal support position by itself, transfer the locking end on the locking mechanism to the first position, and the locking mechanism locks the movable seat 20 and the mounting seat 30 together, so that the lumbar support 10 always remains in the optimal support position. By movably connecting the movable seat 20 to the mounting seat 30, the utility model uses the elastic stress provided by the elastic member to support the movable seat 20. When the lumbar support 10 is pressed by the user's waist, it moves backward and compresses the elastic member. When the elastic stress of the elastic member reaches an equilibrium with the extrusion force from the user's waist, the lumbar support 10 moves to the optimal support position, enabling the lumbar support 10 to adapt to the user's sitting posture and body shape. When using the seat, the user presses the lumbar support 10 backward with his / her own waist. After the lumbar support 10 reaches the optimal support position, operate the locking mechanism to lock the movable seat 20 and the mounting seat 30, quickly complete the adjustment of the position of the lumbar support 10, and there is no need to leave the seat during the adjustment process, improving the convenience of adjusting the lumbar support 10 and making the use of the seat simple and convenient.

[0030] In a preferred embodiment, the locking mechanism includes a locking member 40, an operating member, and an elastic reset member. The locking end is located on the locking member 40. The operating member is used to push the locking member 40 towards the movable seat 20. The elastic reset member is disposed between the mounting seat 30 and the locking member 40. The elastic stress provided by the elastic reset member can enable the locking member 40 to always move away from the movable seat 20. That is to say, the user can perform corresponding operations on the operating member to make the locking member 40 move towards the movable seat 20, and then make the locking end on the locking member 40 move to the first position. When corresponding operations are performed on the operating member, the locking member 40 can be unlocked, and the elastic reset member is used to push the locking member 40, so that the locking member 40 moves away from the movable seat 20, and then the locking end moves to the second position. A chute 31 extending backward from its front end surface is provided on the mounting seat 30. The movable seat 20 is slidably inserted into the chute 31. The mounting seat 30 and the movable seat 20 are sleeved together, so that the movable seat 20 is slidably mounted on the mounting seat 30. It should be noted that in other embodiments, the movable seat 20 can also be sleeved on the mounting seat 30. An installation groove 32 is provided on the peripheral wall of the mounting seat 30. An avoidance hole 321 communicating with the chute 31 is provided on the bottom wall of the installation groove 32. The locking member 40 is movably disposed in the installation groove 32, so that the locking end of the locking member 40 passes through the avoidance hole 321 and is placed in the chute 31. Inside the chute 31, the locking end can be combined with the engaging portion located on the movable seat 20. The above installation groove 32 can be provided on the top wall of the mounting seat 30 to facilitate the user to operate the operating member. The above avoidance hole 321 is provided in the middle of the bottom wall of the installation groove 32, so that the parts of the bottom wall of the installation groove 32 on both sides of the avoidance hole 321 respectively form a support surface 322. The locking member 40 includes a base 41 and two wing plates 42. The two wing plates 42 are respectively located on both sides of the base 41, and the two wing plates 42 are respectively located outside the two support surfaces 322. The locking end is provided on the inner side surface of the base 41. The elastic reset member includes two reset springs 44. The two wing plates 42 respectively correspond to the two support surfaces 322. The two reset springs 44 are respectively installed between the corresponding two wing plates 42 and the two support surfaces 322. By applying an outward elastic stress to the two wing plates 42 through the two reset springs 44, the locking end on the inner side surface of the base 41 is always kept in a trend of moving outward to be away from the movable seat 20, and the elastic stress applied by the two reset springs 44 can enable the locking member 40 to stably move outward inside the installation groove 32, preventing the locking member 40 from being stuck. In some embodiments, the above locking end is a convex tooth 43 provided on the inner side surface of the base 41, and the engaging portion is a engaging groove 21 provided on the outer peripheral surface of the movable seat 20. In other embodiments, the convex tooth 43 can also be provided on the movable seat 20 as the engaging portion, and the engaging groove 21 can be provided on the base 41 as the locking end.

[0031] The above-mentioned operating component is pivotally connected to the mounting seat 30, and includes a wrench 50 and a cam 51. The cam 51 and the wrench 50 are fixedly matched, and the two can be integrally formed. The operating component is pivotally connected to the mounting seat 30 through a rotating shaft 52, so that the operating component is located above the mounting groove 32 of the mounting seat 30, and the cam 51 is against the top of the locking member 40. Specifically, the cam 51 is placed above the base 41 of the locking member 40. When the wrench 50 is turned, the cam 51 is driven to swing downward, and the cam 51 squeezes the base 41 of the locking member 40 downward, so that the base 41 of the locking member 40 is pressed downward. The convex teeth 43 on the lower surface of the seat 41 move downward, and then the convex teeth 43 are combined with the locking groove 21 to lock the movable seat 20 and the mounting seat 30. When it is necessary to unlock the movable seat 20 and the mounting seat 30, the wrench 50 is turned in the opposite direction to make the cam 51 swing upward to make a certain space for the upward movement of the base 41. Under the elastic stress of the two return springs 44, the locking member 40 moves upward, and the convex teeth 43 on the lower surface of the base 41 are disengaged from the locking groove 21, and the locking member 40 no longer limits the freedom of the movable seat 20 to move forward and backward relative to the mounting seat 30.

[0032] An end wall 301 is provided at the rear end of the mounting seat 30, and the rear end of the mounting seat 30 is covered by the end wall 301, so that the rear end of the slide groove 31 forms a blind end. The movable seat 20 is provided with a groove 22 extending forward from its rear end surface, and the front end of the groove 22 forms a blind end. The spring 60 is installed inside the groove 22, and the rear end of the spring 60 abuts against the end wall 301, and the front end abuts against the blind end of the groove 22. A support sleeve 33 extending forward is provided on the end wall 301, and a baffle wall 34 is formed at the front end of the support sleeve 33. A guide hole 35 is provided in the middle of the baffle wall 34. A guide column 23 extending forward and backward is provided inside the groove 22 on the movable seat 20, and the front end of the guide column 23 is fixedly connected to the blind end of the groove 22, and the rear end of the guide column 23 passes through the guide hole 35 and is located on the front side of the baffle wall 34. A baffle plate 24 is fixedly connected to the rear end of the guide column 23 by a screw 25, and the baffle plate 24 cooperates with the baffle wall 34 to limit the maximum displacement of the guide column 23 moving forward, that is, to limit the maximum displacement of the movable seat 20 moving forward relative to the mounting seat 30. At the same time, the guide column 23 cooperates with the guide hole 35 to guide the forward and backward movement of the movable seat 20 to prevent the movable seat 20 from swinging.

[0033] On the inner wall surface of the sliding groove 31, there are convex ribs 36 extending forward and backward. The convex ribs 36 are in contact with the outer peripheral surface of the movable seat 20, providing support for the movable seat 20 in the radial direction, enabling the movable seat 20 to slide smoothly relative to the mounting seat 30 in the front-back direction. At the same time, the contact area between the movable seat 20 and the mounting seat 30 is reduced, making the static friction between the two relatively small and reducing the wear of the movable seat 20 and the mounting seat 30. In some other embodiments, the convex ribs 36 may also be provided on the outer peripheral surface of the movable seat 20, or the convex ribs 36 may be provided on both the outer peripheral surface of the movable seat 20 and the wall surface of the sliding groove 31.

[0034] The seat of the present utility model includes the above-mentioned adaptive lumbar support assembly, and 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 embodiments are only optional embodiment modes of the present utility model, and the scope of protection 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 scope of protection required by the present utility model.

Claims

1. An adaptive lumbar support assembly, characterized in that, It includes a mounting base, a movable seat, a lumbar support connected to the movable seat, an elastic member, and a locking mechanism; The movable seat is movably connected to the mounting base so that the movable seat can move relative to the mounting base in the front-rear direction. The elastic member is disposed between the mounting base and the movable seat and is used to apply an elastic stress forward to the movable seat; A plurality of card positions are arranged in the front-rear direction on the movable seat. The locking mechanism is disposed on the mounting base, and a locking end matching the card position is provided on the locking mechanism. The locking end is used to move between a first position close to the movable seat and a second position away from the movable seat. When the locking end is in the first position, the locking end engages with one of the card positions to limit the freedom of movement of the movable seat relative to the mounting base in the front-rear direction. When the locking end is in the second position, the locking end disengages from the card position so that the movable seat can move relative to the mounting base in the front-rear direction.

2. The adaptive lumbar support assembly according to claim 1, wherein The locking mechanism includes a locking member, an operating member for pushing the locking member toward the movable seat, and an elastic reset member. The locking end is located on the side of the locking member facing the movable seat. The elastic reset member is disposed between the mounting base and the locking member, and the elastic reset member is used to provide an elastic stress for pushing the locking member away from the movable seat so that the locking end on the locking member always maintains a tendency to move toward the second position.

3. The adaptive lumbar support assembly according to claim 2, wherein, A chute extending rearward from its front end surface is provided on the mounting base. The movable seat is slidably inserted into the chute. An installation groove is provided on the peripheral wall of the mounting base, and an avoidance hole communicating with the chute is provided on the bottom wall of the installation groove. The locking member is movably disposed in the installation groove, and the locking end passes through the avoidance hole and is placed in the chute.

4. The adaptive lumbar support assembly according to claim 3, wherein Portions of the bottom wall of the installation groove on both sides of the avoidance hole respectively form a support surface. The locking member includes a base and two wing plates respectively located on both sides of the base. The two wing plates are respectively located outside the two support surfaces. The locking end is disposed on the inner side surface of the base. The elastic reset member includes two return springs, and the two return springs are respectively located between the two wing plates and the two support surfaces.

5. The adaptive lumbar support assembly according to claim 4, wherein The locking end is a convex tooth provided on the inner side surface of the base, and the card position is a card slot provided on the outer peripheral surface of the movable seat.

6. The adaptive lumbar support assembly according to claim 3, wherein The operating member is pivotally connected to the mounting base and includes a wrench and a cam fixedly engaged with the wrench. The wrench is used to drive the cam to rotate so that the cam pushes the locking member toward the movable seat.

7. The adaptive lumbar support assembly according to claim 3, wherein An end wall is provided at the rear end portion of the mounting base so that the rear end portion of the chute forms a blind end. A groove extending forward from its rear end surface is provided on the movable seat, and the front end portion of the groove forms a blind end. The elastic member is a spring placed in the groove. The rear end portion of the spring abuts against the end wall, and the front end portion abuts against the blind end of the groove.

8. The adaptive lumbar support assembly according to claim 7, wherein A support sleeve extending forward is provided on the end wall. A stop wall is formed at the front end of the support sleeve. A guide hole is provided in the middle of the stop wall. A guide post is provided inside the groove on the movable seat. The front end of the guide post is fixedly connected to the blind end of the groove. The rear end of the guide post passes through the guide hole and is located on the front side of the stop wall. A stop piece is fixed to the rear end of the guide post, and the stop piece cooperates with the stop wall to limit the maximum displacement of the guide post moving forward.

9. The adaptive lumbar support assembly according to claim 3, wherein, Convex ribs extending in the front-rear direction are provided on the inner wall surface of the chute and / or the outer peripheral surface of the mounting base.

10. Seat, characterized in that, It includes the adaptive lumbar support assembly according to any one of claims 1-9.

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