Waist support assembly and seat

Abstract

The utility model discloses a waist support assembly and a seat. The waist support assembly comprises a bracket, a back plate, shaping cotton, a movable supporting block and an adjusting mechanism, the back plate is installed on the support, the shaping cotton is connected to the front side face of the back plate, a guide part extending vertically is arranged on the back plate, the movable supporting block is installed on the guide part in a sliding mode so that the movable supporting block can move relative to the back plate and the shaping cotton in the vertical direction, and the front side of the movable supporting block abuts against the rear side face of the shaping cotton. The adjusting mechanism comprises a mounting base mounted on the back plate or the support, a movable block movably connected to the mounting base, an operation part used for driving the movable block to move relative to the mounting base and two traction pieces, one end of each traction piece is connected to the movable block, and the other end of each traction piece is connected to the support. The other ends of the two traction pieces are connected to the movable supporting block in the upper direction and the lower direction respectively. According to the waist support assembly, the movable supporting block is adjusted, so that the shape of the front side face of the shaping cotton can meet the requirements of a user, and the comfort of the waist support assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair technical field, concretely relates to a waist support subassembly and seat. BACKGROUND

[0002] The conventional seat does not have the waist support unit, and when using the seat, the waist is in the suspended state, which can easily cause the waist fatigue, in order to alleviate the user's waist fatigue, some office chairs, learning seats and the like usually configure the waist support subassembly, which provides sufficient support for the user's waist through the waist support subassembly, and the current waist support subassembly usually comprises a back plate, a flexible support pad connected to the front side of the back plate, the flexible support pad usually selects the shaped cotton, and the front side of the shaped cotton is arranged as the shape matched with the human waist, so as to make the waist support subassembly of the seat as much as possible to conform to the ergonomics, however, the shape of the front side of the shaped cotton is fixed, and cannot adapt to the body shape of different users and the sitting posture of the user. SUMMARY

[0003] The utility model discloses a waist support subassembly and seat, which can adapt to the body shape of different users and the sitting posture of the user.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] The waist support subassembly comprises a support, a back plate, shaped cotton, a movable support block and an adjusting mechanism.

[0006] The back plate is installed on the support, the shaped cotton is connected to the front side of the back plate, the back plate is provided with a guide portion extending upward and downward, the movable support block is slidably installed on the guide portion so that the movable support block can move in the upward and downward directions relative to the back plate and the shaped cotton, and the front side of the movable support block abuts against the rear side of the shaped cotton.

[0007] The adjusting mechanism comprises a mounting seat installed on the back plate or the support, a movable block movably connected to the mounting seat, an operating portion for driving the movable block to move relative to the mounting seat, and two traction members, one end of each of the two traction members is connected to the movable block, and the other end of each of the two traction members is connected to the movable support block in the upward and downward directions respectively.

[0008] Preferably, the guide portion is a guide groove arranged on the back plate, the movable support block is provided with a rearwardly extending sliding block, the sliding block is embedded in the guide groove, the rear side of the sliding block is detachably fixed with a lifting seat located at the rear side of the back plate, and the back plate is limited between the lifting seat and the movable support block.

[0009] Preferably, the guide part comprises two guide grooves staggered along the transverse direction of the back plate, and the movable support block is provided with two sliders respectively on two sides thereof, the two sliders are respectively slidably embedded in the two guide grooves, and the two ends of the lifting seat are detachably fixed with the two sliders respectively.

[0010] Preferably, the back plate is provided with two sliding grooves extending upward and downward, the two sliding grooves are respectively located below the two guide grooves, the two sliders are respectively located on the top sides of the movable support block, and the bottom sides of the movable support block are respectively provided with two guide blocks which are slidably embedded in the two sliding grooves.

[0011] Preferably, the slider is provided with a first limiting block protruding from two sides thereof, the first limiting block is located on the front side of the back plate; the guide block is provided with a limiting column and a second limiting block protruding from two sides thereof, the limiting column is located on the rear side of the back plate, and the second limiting block is located on the front side of the back plate; the top of the sliding groove is formed with a mounting groove, the width of the sliding groove is W1, the width of the mounting groove is W2, the length of the limiting column is D1, and the length of the second limiting block is D2, wherein W1 < D1 < W2 < D2, so that the limiting column can pass through the mounting groove from the front side of the back plate and be located on the rear side of the back plate.

[0012] Preferably, the operation part is a knob pivotally connected to the mounting seat, the inner side end of the knob is provided with a gear, the movable block is a rack movably connected to the mounting seat and movable relative to the mounting seat in the upward and downward directions, the gear is engaged with the rack to drive the rack to move relative to the mounting seat in the upward and downward directions through the gear, and the two traction members are both pull ropes, one end of each of the two pull ropes is connected to the upper and lower end portions of the rack, the other end of one of the two pull ropes extends from top to bottom and is connected to the lifting seat, and the other end of the other pull rope extends from bottom to top and is connected to the lifting seat.

[0013] Preferably, the rear side of the back plate is fixedly connected with two buckles, the two buckles are respectively located on the upper and lower sides of the lifting seat; the outer sides of the two pull ropes are both provided with a sleeve, one end of one of the sleeves is connected to the upper end portion of the mounting seat, and the other end of the sleeve is connected to the buckle located above the lifting seat; one end of the other sleeve is connected to the lower end portion of the mounting seat, and the other end of the sleeve is connected to the buckle located below the lifting seat.

[0014] Preferably, the front side of the movable support block is arc-shaped with the middle portion protruding forward, and the rear side of the shaping cotton is fixedly connected with a rigid support piece abutting against the front side of the movable support block.

[0015] Preferably, the shaping cotton is provided with a groove recessed from the rear side thereof toward the front side, and the vibration module is embedded in the groove.

[0016] The seat comprises the lumbar support assembly.

[0017] Compared with the prior art, the lumbar support assembly has the following beneficial effects:

[0018] The utility model discloses a movable support block is installed between backboard and flexible shaping cotton, can adjust movable support block's position relative to shaping cotton in the up and down direction through adjusting mechanism, thereby utilize movable support block to provide rigid support to shaping cotton in the rear side different position of shaping cotton, according to the different body shape of user and different sitting posture adjust movable support block, make the front side shape of shaping cotton can satisfy the demand of user, adjust waist support subassembly to the most comfortable state, to improve the comfort of waist support subassembly. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is structure schematic diagram of the utility model;

[0020] Figure 2 It is structure schematic diagram of the utility model; Figure 1 It is structure schematic diagram of the utility model;

[0021] Figure 3 It is structure schematic diagram of the utility model; Figure 1 It is structure schematic diagram of the utility model;

[0022] Figure 4 It is structure schematic diagram of the utility model; Figure 1 It is structure schematic diagram of the utility model;

[0023] Figure 5 It is structure schematic diagram of the utility model; Figure 1 It is structure schematic diagram of the utility model;

[0024] Figure 6 It is working state schematic diagram of the utility model.

[0025] Among them: 10, support, 20, backboard, 21, guide slot, 22, sliding slot, 23, installation slot, 24, buckle, 25, buckle, 30, shaping cotton, 31, rigid support piece, 32, vibration module, 33, recess, 40, movable support block, 41, lifting seat, 42, sliding block, 421, first limit block, 43, guide block, 431, limit column, 432, second limit block, 50, adjusting mechanism, 51, mounting seat, 52, knob, 53, gear, 54, rack, 55, pull rope, 56, pull rope, 57, sleeve, 58, sleeve. DETAILED DESCRIPTION

[0026] The utility model is further described below in combination with the drawings and specific embodiments. It should be noted that the embodiments described below or the technical features between them can be combined to form new embodiments without conflict. Except for special description, the materials and equipment used in the embodiments can be purchased from the market. The examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the application and cannot be understood as a limitation on the application.

[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified and limited.

[0028] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] As Figure 1 , 2, 3, 4, 5, 6, the utility model discloses a waist support assembly, it includes support 10, backplate 20, shaping cotton 30, movable support block 40, adjusting mechanism 50, backplate 20 installs on support 10, wherein backplate 20 can be with the mode of fixed connection installs on the front side of support 10, or with adjustable mode installs on support 10, to make the whole waist support assembly can be adjusted in front -back direction, up -down direction relative to support 10;Shaping cotton 30 is connected on the front side of backplate 20, and the front side of shaping cotton 30 forms the flexible support surface consistent with the shape of the waist of user, and the rear side of shaping cotton 30 can be connected to the front side of backplate 20 with the mode of bonding, is provided with the guide portion on backplate 20, and movable support block 40 is slidably installed on the guide portion of backplate 20, to make movable support block 40 can move in up -down direction relative to backplate 20 and shaping cotton 30, and the front side of movable support block 40 is abutted on the rear side of shaping cotton 30, and by the movement of movable support block 40 in up -down direction, the height position of movable support block 40 and shaping cotton 30 can be changed, that is, using movable support block 40 can provide rigid support to the different positions of shaping cotton 30 in up -down direction.Adjusting mechanism 50 is used to adjust the height position of movable support block 40, and specifically includes mounting seat 51 installed on support 10, movable block, operating portion and two traction members, wherein the operating portion is used to drive movable block to move relative to mounting seat 51, and one end of the two traction members is connected to movable block, and the other end of the two traction members is connected to movable support block 40 in two directions of up and down respectively.When operating portion is operated, operating portion drives movable block to move, when operating portion drives movable block to move towards the first direction, movable block pulls one of the traction members, and the traction member pulls movable support block 40 to move upwards, when operating portion drives movable block to move towards the second direction (the direction opposite to the first direction), movable block pulls the other traction member, and the traction member pulls movable support block 40 to move downwards, so, corresponding operation is carried out to operating portion, and adjusting mechanism 50 is used to adjust the up -down position of movable support block 40.

[0030] In the utility model, movable support block 40 is installed between backplate 20 and flexible shaping cotton 30, the position of movable support block 40 relative to shaping cotton 30 can be adjusted in up -down direction by adjusting mechanism 50, so that rigid support is provided to shaping cotton 30 by movable support block 40 at different positions of the rear side of shaping cotton 30, and the front side shape of shaping cotton 30 can meet the demand of user by adjusting movable support block 40 according to different body shapes and different sitting postures of user, so that the waist support assembly is adjusted to the most comfortable state, and the comfort of waist support assembly is improved.

[0031] In a preferred embodiment, the guide part is a guide groove 21 arranged on the back plate 20 and extending in the up-down direction, the movable supporting block 40 is provided with a slide block 42 extending rearward, the movable supporting block 40 is arranged on the front side of the back plate 20, the slide block 42 is embedded into the guide groove 21, the slide block 42 can slide in the guide groove 21, a lifting seat 41 located on the rear side of the back plate 20 is detachably fixed on the rear side of the slide block 42, the back plate 20 is limited between the lifting seat 41 and the movable supporting block 40, and the movable supporting block 40 is prevented from being separated from the back plate 20 in the front-rear direction. The guide part includes two guide grooves 21, the two guide grooves 21 are staggered in the lateral direction of the back plate 20, the movable supporting block 40 is provided with a slide block 42 on each side, the two slide blocks 42 are respectively embedded into the two guide grooves 21, the lifting seat 41 is in the shape of a long strip, and the two ends of the lifting seat 41 are respectively detachably fixed with the two slide blocks 42. Through the cooperation of the two slide blocks 42 and the two guide grooves 21, the up-down movement of the movable supporting block 40 is more stable, and the situation of being stuck during adjustment is prevented.

[0032] Two slide grooves 22 are further arranged on the back plate 20, the two slide grooves 22 extend in the up-down direction and are respectively located below the two guide grooves 21, the two slide blocks 42 are respectively located on the top two sides of the movable supporting block 40, guide embedding blocks 43 are arranged on the bottom two sides of the movable supporting block 40, the guide embedding blocks 43 extend rearward, and the two guide embedding blocks 43 are respectively embedded into the two slide grooves 22. Through the cooperation of the guide embedding blocks 43 and the slide grooves 22, the up-down movement of the movable supporting block 40 is further guided. The slide block 42 is provided with a first limiting block 421 protruding from the two sides of the slide block 42, and the first limiting block 421 is located on the front side of the back plate 20. The guide embedding block 43 is provided with a limiting column 431 and a second limiting block 432 protruding from the two sides of the guide embedding block 43, the limiting column 431 is located on the rear side of the back plate 20, and the second limiting block 432 is located on the front side of the back plate 20. In order to facilitate installation, an installation groove 23 is arranged on the top of the slide groove 22, the width of the installation groove 23 is greater than the width of the slide groove 22, so as to facilitate the installation of the guide embedding block 43 from the installation groove 23 into the slide groove 22. Specifically, the width of the slide groove 22 is W1, the width of the installation groove 23 is W2, the length of the limiting column 431 is D1, and the length of the second limiting block 432 is D2. W1 < D1 < W2 < D2, so that the limiting column 431 can be placed on the rear side of the back plate 20 from the front side of the back plate 20 through the installation groove 23, and then the guide embedding block 43 is slid from the installation groove 23 into the slide groove 22, so that the limiting column 431 is located on the rear side of the back plate 20, and the second limiting block 432 is located on the front side of the back plate 20. In this way, the guide embedding block 43 is prevented from being separated from the slide groove 22 in the front-rear direction.

[0033] The utility model discloses, operating part is the knob 52 of pivoted in the mounting seat 51, fixedly installs a gear 53 at the inboard end of knob 52, movable block is the rack 54 that can be in the inside of mounting seat 51 relative to mounting seat 51 motion along the up-down direction, gear 53 and rack 54 engage, when knob 52 drive gear 53 rotate, just can utilize gear 53 drive rack 54 relative to mounting seat 51 motion along the up-down direction, two traction members are pull rope 55 and pull rope 56, wherein one end of pull rope 55 is connected in the upper end portion of rack 54, and the other end extends from top to bottom and is connected in the middle part of lifting seat 41, one end of pull rope 56 is connected in the lower end portion of rack 54, and the other end extends from bottom to top and is connected in the middle part of lifting seat 41, when rotating clockwise knob 52, rack 54 relative to mounting seat 51 downward motion, make rack 54 pull rope 55 be pulled tight downward, in turn make pull rope 55 pull lifting seat 41 upward, movable support block 40 relative to backboard 20 upward motion, contrarily, when rotating counterclockwise knob 52, rack 54 relative to mounting seat 51 upward motion, make rack 54 pull rope 56 be pulled tight upward, in turn make pull rope 56 pull lifting seat 41 downward, movable support block 40 relative to backboard 20 downward motion. The rear side of backboard 20 is fixedly connected with buckle 24 and buckle 25, wherein buckle 24 is located above lifting seat 41, buckle 25 is located below lifting seat 41, pull rope 55 is externally sleeved with a sleeve pipe 57, pull rope 56 is externally sleeved with a sleeve pipe 58, one end of sleeve pipe 57 is connected in the upper end portion of mounting seat 51, and the other end is connected on buckle 24 located above lifting seat 41, and sleeve pipe 57 limits pull rope 55, and make pull rope 55 connect to lifting seat 41 after from sleeve pipe 57 from top to bottom at buckle 24 and are pulled out;One end of sleeve pipe 58 is connected in the lower end portion of mounting seat 51, and the other end is connected on buckle 25 located below lifting seat 41, and sleeve pipe 58 limits pull rope 56, and make pull rope 56 connect to lifting seat 41 after from sleeve pipe 58 from bottom to top at buckle 25 and are pulled out.

[0034] It should be noted that the rack 54 on the adjusting mechanism 50 is not necessarily configured to move in the up-down direction on the mounting seat 51. The rack 54 can also move in the lateral direction. By moving the rack 54 in the lateral direction, the pull ropes 55 and 56 can be tightened, and the movable support block 40 can be moved upward and downward by the pull ropes 55 and 56. The transmission structure between the knob 52 and the movable block is not limited to the gear and rack transmission structure. Other transmission structures can also be used. The mounting seat 51 of the adjusting mechanism 50 can be fixed on the bracket 10 or the backboard 20.

[0035] The utility model discloses a movable support block 40 is set to the front side is the arc shape of the middle part to the front convex, to when movable support block 40 is in contact with the fixed cotton 30, the front side of fixed cotton 30 can form the gentle curve, ensure that the fixed cotton 30 when is pushed by movable support block 40, its front side can better adapt the waist of user, the rear side of fixed cotton 30 is fixedly connected with rigid support piece 31, and rigid support piece 31 is stuck on the front side of movable support block 40, because movable support block 40 is in contact with rigid support piece 31, has reduced the friction between movable support block 40 and fixed cotton 30, makes movable support block 40 can be flexibly up and down movement, the up and down adjustment of movable support block 40 is convenient.

[0036] The fixed cotton 30 is provided with the recess 33 recessed from the rear side to the front, and the vibration module 32 is embedded in the recess 33. When the seat is used, the vibration of the vibration module 32 can provide massage for the user's requirement.

[0037] The seat of the utility model includes the above-mentioned waist support assembly, other structures of the seat are same with prior art, and no detailed description is made here.

[0038] Finally, it should be noted that: the above-mentioned embodiment is only optional embodiment of the utility model, and cannot be used to limit the range of the utility model protection, and any non-essential change and replacement made by the person skilled in the art on the basis of the utility model belongs to the range of the utility model protection.

Claims

1. A lumbar support assembly, characterized by, The application relates to a backboard adjusting device. The backboard is installed on the support, the shaping cotton is connected to the front side of the backboard, the backboard is provided with a guiding part extending upwards and downwards, the movable supporting block is slidably installed on the guiding part so that the movable supporting block can move in the upward and downward directions relative to the backboard and the shaping cotton, and the front side of the movable supporting block abuts against the rear side of the shaping cotton. The adjusting mechanism comprises a mounting seat installed on the backboard or the support, a movable block movably connected to the mounting seat, an operating part for driving the movable block to move relative to the mounting seat, and two traction members, one end of each of the two traction members is connected to the movable block, and the other end of each of the two traction members is connected to the movable supporting block in the upward and downward directions.

2. The lumbar support assembly of claim 1, wherein, The guiding part is a guiding groove arranged on the backboard, the movable supporting block is provided with a sliding block extending rearward, the sliding block is embedded in the guiding groove, the rear side of the sliding block is detachably fixed with a lifting seat located at the rear side of the backboard, and the backboard is limited between the lifting seat and the movable supporting block.

3. The lumbar support assembly of claim 2, wherein, The guiding part comprises two guiding grooves, the two guiding grooves are staggered along the lateral direction of the backboard, the movable supporting block is provided with a sliding block on each side, the two sliding blocks are slidably embedded in the two guiding grooves, and the two ends of the lifting seat are detachably fixed with the two sliding blocks.

4. The lumbar support assembly of claim 3, wherein, The backboard is provided with two sliding grooves extending upwards and downwards, the two sliding grooves are located below the two guiding grooves, the two sliding blocks are located on the top sides of the movable supporting block, the movable supporting block is provided with a guiding embedding block on each bottom side, and the two guiding embedding blocks are slidably embedded in the two sliding grooves.

5. The lumbar support assembly of claim 4, wherein, The sliding block is provided with a first limiting block protruding from the two sides of the sliding block, the first limiting block is located at the front side of the backboard; the guiding embedding block is provided with a limiting column and a second limiting block protruding from the two sides of the guiding embedding block, the limiting column is located at the rear side of the backboard, and the second limiting block is located at the front side of the backboard; the top of the sliding groove forms a mounting groove, the width of the sliding groove is W1, the width of the mounting groove is W2, the length of the limiting column is D1, and the length of the second limiting block is D2, wherein W1 < D1 < W2 < D2, so that the limiting column can pass through the mounting groove from the front side of the backboard and be located at the rear side of the backboard.

6. The lumbar support assembly of claim 2, wherein, The operating part is a knob pivotally connected to the mounting seat, the inner side end of the knob is installed with a gear, the movable block is a rack movably connected to the mounting seat and movable relative to the mounting seat in the upward and downward directions, the gear is engaged with the rack to drive the rack to move relative to the mounting seat in the upward and downward directions through the gear, and the two traction members are pull ropes, one end of each of the two pull ropes is connected to the upper and lower ends of the rack, one end of one of the pull ropes is connected to the lifting seat from top to bottom, and the other end of the other pull rope is connected to the lifting seat from bottom to top.

7. The lumbar support assembly of claim 6, wherein, The rear side of the backboard is fixedly connected with two buckles, the two buckles are located on the upper and lower sides of the lifting seat; the outer sides of the two pull ropes are each sleeved with a sleeve, one end of one of the sleeves is connected to the upper end of the mounting seat, the other end of the sleeve is connected to the buckle above the lifting seat, one end of the other sleeve is connected to the lower end of the mounting seat, and the other end of the sleeve is connected to the buckle below the lifting seat.

8. The lumbar support assembly of claim 1, wherein, The front side of the movable support block is arc-shaped with a middle part protruding forward, and the rear side of the shaping cotton is fixedly connected with a rigid support sheet abutting against the front side of the movable support block.

9. The lumbar support assembly of claim 1, wherein, The shaping cotton is provided with a groove recessed from the rear side to the front, and the vibration module is embedded in the groove.

10. A seat, characterized by A lumbar support assembly comprising any one of claims 1-9.

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