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 waist support back plate, a movable seat, a mounting seat and an elastic element, the movable seat is arranged on the front side of the mounting seat and comprises a first matching surface, and a first pivoting part protruding backwards is arranged on the first matching surface; a second matching surface opposite to the first matching surface and a second pivoting part are arranged on the mounting seat, a mounting groove extending backwards is formed in the second matching surface, and a blind end surface is formed at one end, deviating from the second matching surface, of the mounting groove; the first pivoting part and the second pivoting part are pivoted together through a rotating shaft which transversely penetrates through the first pivoting part and the second pivoting part; one end of the elastic element abuts against the first matching face, the other end of the elastic element is embedded into the installation groove and abuts against the blind end face, and the elastic element is located above the rotating shaft so that the elastic element and the rotating shaft can be arranged in a staggered mode in the vertical direction. According to the utility model, a user does not need to manually adjust after going down from the seat, and does not need to adjust for multiple times, so that the use convenience of the seat is improved.

Description

TECHNICAL FIELD

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

[0002] Traditional seat sets up the backrest at the back side of the cushion, supports the back of the user through the backrest, and the waist of the user is in the state of suspension, which easily leads to the waist fatigue. In order to solve the above-mentioned defects of the traditional seat, some existing e-sports seats and office seats usually configure a waist support on the backrest or cushion of the seat, and the waist support is used to support the waist of the user to improve the comfort of the seat. In order to further adapt to the body shape of different users and different sitting postures of the user, some seats adjustably install the waist support on the backrest or cushion of the seat. When in use, the waist support needs to be adjusted to the appropriate position first. During the adjustment process, the user needs to get off the seat first, and then operate the adjustment button, lever and the like to adjust the waist support to the required position. The operation process is relatively cumbersome, and it is difficult to adjust the waist support to the best state by one adjustment. The user usually needs to operate several times to adjust the waist support to the position required by the user, which further affects the convenience of using the seat. SUMMARY

[0003] The utility model aims at providing a self -adaptation waist support subassembly and seat, which can make the waist support automatically adapt to the body shape and sitting posture of the user, without manual adjustment, and improve the convenience of using the seat.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The self -adaptation waist support subassembly comprises a waist support back plate, a movable seat connected with the waist support back plate, a mounting seat connected with the backrest or cushion of the seat, and an elastic element.

[0006] The movable seat is arranged on the front side of the mounting seat, and the movable seat comprises a first matching surface, and the first matching surface is provided with a first pivot joint part protruding backward. The mounting seat is provided with a second matching surface opposite to the first matching surface and a second pivot joint part. The second matching surface is provided with a mounting groove extending backward, and the end of the mounting groove away from the second matching surface forms a blind end surface. The first pivot joint part and the second pivot joint part are pivotally connected through a shaft transversely penetrating the two to enable the movable seat to swing forward and backward relative to the mounting seat.

[0007] One end of the elastic element abuts against the first matching surface, the other end is embedded in the mounting groove and abuts against the blind end surface, and the elastic element is located above the shaft to make the elastic element and the shaft be arranged in the up-down direction.

[0008] Preferably, two first pivoting parts protruding backward are provided on the first mating surface of the movable seat, and the two first pivoting parts are both plate-shaped. The mounting seat is confined between the two first pivoting parts to prevent the movable seat from moving laterally relative to the mounting seat.

[0009] Preferably, an axial hole is provided on the first pivot part, and the second pivot part is a through hole provided on the mounting seat, the through hole extends from one side of the mounting seat to the other side, and the rotating shaft is a locking screw that passes through the axial holes of the two first pivot parts and the through holes.

[0010] Preferably, the mounting seat is plate-shaped, and a rearward-extending rib and a convex column are provided on the side of the mounting seat facing away from the second mating surface. The mounting groove is provided on the convex column, and the rib is provided around the periphery of the convex column to form a closed structure, and a plurality of reinforcing ribs arranged around the convex column are connected between the rib and the outer peripheral surface of the convex column.

[0011] Preferably, the bottom of the rib forms a transverse extension section, and the through hole is provided on the transverse extension section.

[0012] Preferably, the mounting seat includes a first connecting portion extending downward from the bottom of the convex rib, and a second connecting portion extending upward from the top of the convex rib, and both the first connecting portion and the second connecting portion are provided with screw holes, and connecting screws that connect the mounting seat to the backrest or seat cushion of the seat are passed through the screw holes.

[0013] Preferably, a first connecting rib connected between the tops of the two first pivoting parts is provided on the upper edge of the first mating surface, and a second connecting rib connected between the bottoms of the two first pivoting parts is provided on the lower edge of the first mating surface.

[0014] Preferably, the elastic element is a spring, a mounting post is protruding from the first mating surface, and one end of the spring is sleeved on the mounting post.

[0015] Preferably, the lumbar support back plate is mounted on a side of the movable seat away from the first matching surface in a manner that is adjustable up and down.

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

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In the present invention, when the lumbar support back is squeezed backward by the user's waist, the elastic element located between the movable seat and the mounting seat is compressed. The elastic stress generated by the elastic element after continuous compression is balanced with the pressure from the user's waist, so that the lumbar support back can support the user's waist after swinging to an appropriate angle. When using the chair, the waist can be directly leaned against the lumbar support back to complete the adaptive adjustment of the lumbar support back angle. The user does not need to manually adjust it after getting off the chair, and there is no need to make multiple adjustments, which improves the convenience of using the chair. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] Figure 3 for Figure 1 Schematic diagram of the structure of the middle movable seat;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure of the middle mounting seat;

[0023] Figure 5 for Figure 1 Another view of the center mount.

[0024] Among them: 10, lumbar support back plate; 20, movable seat; 201, first mating surface; 21, first pivot part; 211, axial hole; 22, mounting column; 23, first connecting rib; 24, second connecting rib; 30, mounting seat; 301, second mating surface; 31, mounting groove; 32, protruding column; 33, protruding rib; 331, extension section; 332, through hole; 34, reinforcing rib; 35, first connecting part; 36, second connecting part; 40, spring; 50, locking screw. DETAILED DESCRIPTION

[0025] Below, the present invention is further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Unless otherwise specified, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and cannot be understood as limiting this application.

[0026] In the description of this application, it should be understood that the terms "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "connected," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, a connection through an intermediary medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] like Figure 1 、 2 , 3, 4, and 5 show an adaptive lumbar support assembly of the present invention, which includes a lumbar support backboard 10, a movable seat 20, a mounting seat 30, and a spring 40, wherein the lumbar support backboard 10 is configured to be suitable for mounting a flexible support in a shape and structure so as to withstand the pressure from the user's waist through the lumbar support backboard 10, the movable seat 20 is connected to the rear side of the lumbar support backboard 10, and the mounting seat 30 is connected to the backrest of the seat. Of course, in other embodiments, the mounting seat 30 can also be connected to the rear part of the seat cushion of the seat; the movable seat 20 is placed on the front side of the mounting seat 30, and the movable seat 20 includes a first mating surface 201, on which a first pivot joint protruding backward is provided. Part 21, the first mating surface 201 is located on the rear side of the movable seat 20; a second mating surface 301 is provided on the front side of the mounting seat 30, and the second mating surface 301 is arranged opposite to the first mating surface 201. In addition, a second pivot portion is also provided on the mounting seat 30, and a mounting groove 31 extending backward is provided on the second mating surface 301, and the end of the mounting groove 31 away from the second mating surface 301 (that is, the rear end portion of the mounting groove 31) forms a blind end surface; the first pivot portion 21 and the second pivot portion are pivotally connected together by a rotating shaft extending in the left and right directions and crossing the two, so that the movable seat 20 and the mounting seat 30 are pivotally connected, so that the lumbar support backboard 10 connected to the movable seat 20 can swing back and forth relative to the mounting seat 30. One end of the spring 40 presses against the first mating surface 201, and the other end of the spring 40 is embedded in the mounting groove 31 and presses against the blind end surface of the mounting groove 31. The spring 40 is located above the rotating shaft, so that the spring 40 and the rotating shaft are staggered a certain distance in the up and down directions. The spring 40 is pressed by the first mating surface 201 and the blind end surface, so that the spring 40 is in a contracted state.

[0029] When the seat is used, the user's waist leans back to press the waist support back plate 10, so that the movable seat 20 swings back around the rotating shaft, and the first matching surface 201 of the movable seat 20 extrudes the spring 40 back, and the spring 40 is gradually compressed with the change of the swing angle of the movable seat 20, and when the spring 40 is compressed to a certain extent, the elastic stress generated by the spring 40 is equal to the pressure from the user's waist to the waist support back plate 10, so as to achieve balance, at this time, the waist support back plate 10 swings back with the movable seat 20 to the best angle that can support the user's waist, so as to realize the self-adaptive adjustment of the waist support back plate 10. In the utility model, when the waist support back plate 10 is extruded back by the user's waist, the elastic element between the movable seat 20 and the mounting seat 30 is compressed, and the elastic stress generated by the elastic element after being continuously compressed is balanced with the pressure from the user's waist, so that the waist support back plate 10 can support the user's waist after swinging to an appropriate angle. When the seat is used, the waist is directly leaned to the waist support back plate 10, and the self-adaptive adjustment of the angle of the waist support back plate 10 is completed, the user does not need to manually adjust after getting off the seat, and the seat use convenience is improved.

[0030] In the preferred embodiment, two first pivot joints 21 are arranged on the first matching surface 201 of the movable seat 20, both of which are plate-shaped, and both of which are arranged by protruding back from the left and right sides of the first matching surface 201. The mounting seat 30 is limited between the two first pivot joints 21, and a limiting structure is formed by the two first pivot joints 21 to prevent the movable seat 20 from moving relative to the mounting seat 30 in the transverse direction (i.e. left and right direction). The first pivot joint 21 is provided with an axle hole 211, and the second pivot joint is a through hole 332 arranged on the mounting seat 30, which extends from one side of the mounting seat 30 to the other side. The rotating shaft is a locking screw 50 that transversely passes through the axle hole 211 of the two first pivot joints 21 and the through hole 332 of the mounting seat 30. When assembled, the mounting seat 30 is placed between the two first pivot joints 21, the two ends of the through hole 332 are aligned with the two axle holes 211 respectively, the two parts of the locking screw 50 are inserted from the outside of the two axle holes 211 respectively, and then the two parts of the locking screw 50 are screwed together.

[0031] The utility model discloses, mounting seat 30 is basically plate -shaped structure, the side of mounting seat 30 away from second cooperation surface 301 is provided with the rear extension boss 33 of muscle and the boss 32, and mounting groove 31 is arranged on the boss 32, i. e. mounting groove 31 is extended to the inside of boss 32 from second cooperation surface 301, and the boss 32 is arranged around the circumference of boss 32 and forms a closed structure, and a plurality of reinforcing ribs 34 are connected between the outer circumferential surface of boss 32 and boss 33, and the plurality of reinforcing ribs 34 are arranged around the boss 32, the mounting groove 31 of greater depth can be arranged on mounting seat 30 by setting the boss 32, the boss 33 is arranged on the back side of mounting seat 30, and the strength of mounting seat 30 is improved, in addition, the reinforcing rib 34 is arranged between the boss 33 and the boss 32, and the overall strength of mounting seat 30 is further improved, and the deformation of mounting seat 30 during work is prevented. In order to make the whole mounting seat 30 more compact, and improve the overall strength of mounting seat 30, a transverse (left-right direction) extension section 331 is formed at the bottom of the above-mentioned boss 33, and a through hole 332 is arranged on the transverse extension section 331.

[0032] Mounting seat 30 includes first connecting part 35, second connecting part 36, wherein first connecting part 35 extends downward from the bottom of boss 33, second connecting part 36 extends upward from the top of boss 33, screw holes are arranged on first connecting part 35 and second connecting part 36, connecting screws are arranged in the screw holes, and mounting seat 30 is connected to the back of the seat through the connecting screws, so that the assembly of mounting seat 30 and the seat is facilitated, and in other embodiments, mounting seat 30 can also be connected to the rear part of the seat cushion of the seat through connecting screws.

[0033] In order to make the movable seat 20 have higher strength, the first connecting rib 23 is arranged on the upper edge of the first cooperation surface 201, and the two ends of the first connecting rib 23 are respectively connected to the top of the two first pivot parts 21, and similarly, the second connecting rib 24 is arranged on the lower edge of the first cooperation surface 201, and the two ends of the second connecting rib 24 are respectively connected to the bottom of the two first pivot parts 21.

[0034] In the utility model, in order to improve the stability of spring 40, the mounting column 22 is further arranged on the first cooperation surface 201, one end of spring 40 is sleeved on the mounting column 22, and the spring 40 is prevented from being offset relative to the first cooperation surface 201 when being pressed, so that the spring 40 can provide better elastic support for the movable seat 20.

[0035] In another preferred embodiment, the waist support back plate 10 can also be installed on the side of the movable seat 20 away from the first cooperation surface 201 in an up-down adjustable manner, so that the position of the waist support back plate 10 can be adjusted in the up-down direction, and the waist support back plate 10 can better support the waist of the user.

[0036] The seat of the present invention includes the above-mentioned adaptive lumbar support assembly. Other structures of the seat are the same as those in the prior art and will not be described in detail here.

[0037] Finally, it should be noted that the above-mentioned implementation mode is only an optional embodiment of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. Adaptive lumbar support assembly, characterized in that: It includes a lumbar support back plate, a movable seat connected to the lumbar support back plate, a mounting seat connected to the backrest or seat cushion of the seat, and an elastic element; The movable seat is disposed on the front side of the mounting seat, and includes a first mating surface, on which a first pivot portion protruding rearward is provided; the mounting seat is provided with a second mating surface opposite to the first mating surface, and a second pivot portion, the second mating surface being provided with a mounting groove extending rearward, with an end of the mounting groove facing away from the second mating surface forming a blind end surface; the first pivot portion and the second pivot portion are pivotally connected together by a rotating shaft passing through the two so that the movable seat can swing forward and backward relative to the mounting seat; One end of the elastic element abuts against the first matching surface, and the other end is embedded in the installation groove and abuts against the blind end surface. The elastic element is located above the rotating shaft so that the elastic element and the rotating shaft are staggered in the vertical direction.

2. The adaptive lumbar support assembly according to claim 1, wherein: Two first pivoting parts protruding backward are provided on the first matching surface of the movable seat. Both first pivoting parts are plate-shaped. The mounting seat is confined between the two first pivoting parts to prevent the movable seat from moving laterally relative to the mounting seat.

3. The adaptive lumbar support assembly according to claim 2, wherein: The first pivot part is provided with an axial hole, the second pivot part is a through hole provided on the mounting base, the through hole extends from one side of the mounting base to the other side, and the rotating shaft is a locking screw that passes through the axial holes of the two first pivot parts and the through holes.

4. The adaptive lumbar support assembly according to claim 2, wherein: The mounting seat is plate-shaped, and a rearward-extending rib and a convex column are provided on the side of the mounting seat facing away from the second mating surface. The mounting groove is provided on the convex column. The rib is provided around the periphery of the convex column to form a closed structure, and a plurality of reinforcing ribs arranged around the convex column are connected between the rib and the outer peripheral surface of the convex column.

5. The adaptive lumbar support assembly according to claim 4, wherein: The bottom of the rib forms a transverse extension section, and the through hole is arranged on the transverse extension section.

6. The adaptive lumbar support assembly according to claim 4, wherein: The mounting seat includes a first connecting portion extending downward from the bottom of the convex rib and a second connecting portion extending upward from the top of the convex rib. Both the first connecting portion and the second connecting portion are provided with screw holes, and connecting screws that connect the mounting seat to the backrest or seat cushion of the seat are passed through the screw holes.

7. The adaptive lumbar support assembly according to claim 2, wherein: A first connecting rib connected between the tops of the two first pivoting parts is provided on the upper edge of the first mating surface, and a second connecting rib connected between the bottoms of the two first pivoting parts is provided on the lower edge of the first mating surface.

8. The adaptive lumbar support assembly according to claim 1, wherein: The elastic element is a spring. A mounting post is protruding from the first matching surface, and one end of the spring is sleeved on the mounting post.

9. The adaptive lumbar support assembly according to claim 1, wherein: The lumbar support back plate is installed on a side of the movable seat away from the first matching surface in a manner that the lumbar support back plate can be adjusted up and down.

10. A seat, characterized in that The adaptive lumbar support assembly comprises the adaptive lumbar support assembly according to any one of claims 1 to 9.

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