Waist rest capable of being folded inwards and seat

Abstract

The utility model discloses a waist rest and a seat capable of being folded inwards, the waist rest comprises a fixed seat, two automatic adjusting modules and two back cushions, and the two automatic adjusting modules are arranged on the fixed seat at intervals along a first direction; the two back cushions are installed on the two automatic adjusting modules in a one-to-one correspondence mode, and the back cushions, the automatic adjusting modules and the fixing base are sequentially arranged in the second direction. Wherein through the automatic adjusting module, the back cushions can swing in the first direction, the back cushions can also swing in the third direction, so that the two back cushions can swing and retract towards the position between the two back cushions, and the third direction is perpendicular to the first direction and the second direction. According to the waist rest provided by the utility model, the angle can be automatically adjusted in two different directions according to the waist of a user, and the waist rest is stronger in human body adaptability and higher in comfort level.

Description

Technical Field

[0001] This utility model relates to the field of lumbar support technology, and in particular to a retractable lumbar support and seat. Background Technology

[0002] Currently, some chairs are equipped with lumbar supports to improve comfort and provide flexible support for the user's lower back. Existing lumbar supports typically consist of a fixed base at the rear and two cushions located in front of the base. The base is used to mount the chair, and the two cushions are hinged to the left and right ends of the base. However, the two cushions of this type of lumbar support can only swing left and right to converge inwards, meaning the lumbar support can only adapt laterally to different users' lower backs. Its ability to adapt to different body shapes is still somewhat lacking, and its comfort level needs further improvement. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an inward-adjustable lumbar support that can automatically adjust its angle according to the user's waist movement in two different directions, making it more adaptable to the human body and more comfortable.

[0004] This utility model also proposes a seat with the aforementioned retractable lumbar support.

[0005] According to a first aspect of the present invention, a retractable lumbar support includes a fixed base, two automatic adjustment modules, and two cushions. The two automatic adjustment modules are spaced apart on the fixed base along a first direction. The two cushions are correspondingly installed on the two automatic adjustment modules. The cushions, the automatic adjustment modules, and the fixed base are arranged sequentially along a second direction. The cushions can swing around the first direction via the automatic adjustment modules, and can also swing around a third direction to allow the two cushions to retract towards a position between them. The third direction is perpendicular to both the first and second directions.

[0006] The retractable lumbar support according to the embodiments of the present invention has at least the following beneficial effects: The lumbar support provided by the present invention, through the automatic adjustment module, allows the cushion to swing around a third direction so that the two cushions can swing inward toward the position between the two cushions. At the same time, the cushions can also swing around a first direction perpendicular to the third direction. Thus, the lumbar support can automatically adjust the angle according to the user's waist in two different directions, making it more adaptable to the human body and more comfortable.

[0007] According to some embodiments of the present invention, the automatic adjustment module includes at least two elastic elements, which are connected to the fixed base and the cushion, and the at least two elastic elements are distributed along the third direction.

[0008] According to some embodiments of the present invention, the elastic element includes a spiral body and a first elastic foot and a second elastic foot extending from the spiral body. The axis of the spiral body is along the third direction, and the first elastic foot and the second elastic foot are arranged at intervals along the second direction. The extension direction of the first elastic foot and the extension direction of the second elastic foot are both along the first direction. One of the first elastic foot and the second elastic foot of the elastic element is connected to the fixed base, and the other is connected to the corresponding cushion.

[0009] According to some embodiments of the present invention, in the automatic adjustment module, the first elastic feet of the two elastic elements are connected as one unit.

[0010] According to some embodiments of the present invention, in the automatic adjustment module, the first elastic feet of the two elastic elements are welded to the first mounting plate, and the first mounting plate is installed on the fixed base by bolts.

[0011] According to some embodiments of the present invention, each of the second elastic feet is welded with a second mounting plate, and the second mounting plate is bolted to the corresponding cushion.

[0012] According to some embodiments of the present invention, the cushion includes a soft pad and a support frame, and the support frame is connected to the corresponding automatic adjustment module.

[0013] According to some embodiments of the present invention, the support frame is annular, and the support frame is provided with a suspended part. The suspended part is located inside the support frame and is suspended relative to the soft pad. The support frame is connected to the corresponding automatic adjustment module through the suspended part.

[0014] According to some embodiments of the present invention, the side of the cushion away from the fixed seat is a curved surface, and the curved surface is arc-shaped in the first direction and the third direction.

[0015] The seat according to a second aspect of the present invention includes the aforementioned retractable lumbar support.

[0016] The retractable lumbar support according to the embodiments of the present utility model has at least the following beneficial effects: the lumbar support can automatically adjust its angle according to the user's waist in two different directions, making it more adaptable to the human body; and the use of the lumbar support in the seat can improve comfort.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of an inwardly retractable lumbar support according to an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 A schematic diagram showing the two cushions of an inwardly retractable lumbar support swinging around a third direction;

[0021] Figure 3 for Figure 1 A schematic diagram showing the inward-adjustable lumbar support cushion swinging about a first direction;

[0022] Figure 4 for Figure 1 An exploded view of the retractable lumbar support shown;

[0023] Figure 5 for Figure 1 An exploded view of the retractable lumbar support's automatic adjustment module is shown.

[0024] Figure 6 for Figure 1 The diagram shows two cushions of a retractable lumbar support.

[0025] Figure label:

[0026] Fixed base 100, automatic adjustment module 200, elastic element 210, spiral body 211, first elastic foot 212, second elastic foot 213, first mounting plate 220, second mounting plate 230, cushion 300, soft cushion 310, support frame 320, and suspended part 321. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein 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 accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Reference Figures 1 to 3 According to a first aspect embodiment of the present invention, a retractable lumbar support includes a fixed base 100, two automatic adjustment modules 200, and two cushions 300. The two automatic adjustment modules 200 are spaced apart from each other on the fixed base 100 along a first direction; the two cushions 300 are correspondingly installed on the two automatic adjustment modules 200, and the cushions 300, automatic adjustment modules 200, and fixed base 100 are arranged sequentially along a second direction. (Refer to...) Figure 3 Through the automatic adjustment module 200, the cushion 300 can swing around the first direction, as shown in the reference. Figure 2 Through the automatic adjustment module 200, the cushion 300 can also swing around a third direction so that the two cushions 300 can swing inward toward the position between the two cushions 300, and the third direction is perpendicular to the first direction and the second direction.

[0032] It should be noted that the cushion 300 swinging around the first direction means that the cushion 300 swings around the rotation axis along the first direction, wherein the rotation axis can be fixed or not; similarly, the cushion 300 swinging around the third direction means that the cushion 300 swings around the rotation axis along the third direction, but the rotation axis can be fixed or not.

[0033] The lumbar support provided by this utility model, through the automatic adjustment module 200, allows the cushion 300 to swing around a third direction so that the two cushions 300 can swing inward toward the position between the two cushions 300. At the same time, the cushions 300 can also swing around a first direction perpendicular to the third direction. Thus, the lumbar support can automatically adjust the angle according to the user's waist in two different directions, making it more adaptable to the human body and more comfortable.

[0034] In practical implementation, the lumbar support can be installed onto the back of the chair via the fixing seat 100. For example, taking the person facing the chair as an example (e.g.) Figures 1 to 4(As shown in the diagram), the seat back is located at the rear of the seat, and the lumbar support is located at the front of the seat back. The two lumbar support cushions 300 are arranged in the left-right direction, i.e., the first direction is left-right. The cushions 300, automatic adjustment module 200, and fixed seat 100 are arranged in the front-back direction, i.e., the second direction is front-back. The third direction is up-down. Thus, the cushions 300 swinging around the first direction means that the cushions 300 can swing up and down, and the cushions 300 swinging around the third direction means that the cushions 300 can swing left and right. Thus, through the automatic adjustment module 200, the two cushions 300 can swing left and right to swing inward towards the position between the two cushions 300 to adapt to different sizes of waists laterally. At the same time, the cushions 300 can also swing up and down to adapt to the waist curve of different users and the changes in waist curve when sitting posture changes.

[0035] Reference Figure 4 and Figure 5 According to some embodiments of the present invention, the automatic adjustment module 200 includes two elastic elements 210. The elastic elements 210 are connected to the fixed base 100 and the cushion 300. The two elastic elements 210 are distributed along a third direction. The two ends of a single elastic element 210 can swing relative to each other around the first direction or the third direction. Thus, the cushion 300 can swing around the first direction through the elastic elements 210, and the cushion 300 can also swing around the third direction. In addition, the cushion 300 is supported by the two elastic elements 210, which can make the swing of the cushion 300 more stable. The two elastic elements 210 cooperate with each other to restrict the rotation of the cushion 300 around the second direction.

[0036] Reference Figure 4 and Figure 5According to some embodiments of the present invention, the elastic element 210 includes a spiral body 211 and a first elastic leg 212 and a second elastic leg 213 extending from the spiral body 211. The axis of the spiral body 211 is along a third direction, and the first elastic leg 212 and the second elastic leg 213 are arranged at intervals along a second direction. The extension direction of the first elastic leg 212 and the extension direction of the second elastic leg 213 are both along a first direction. One of the first elastic leg 212 and the second elastic leg 213 of the elastic element 210 is connected to the fixed base 100, and the other is connected to the corresponding cushion 300. With the above configuration, the first elastic foot 212 and the second elastic foot 213 of the elastic element 210 mainly oscillate around a third direction, while the spiral body 211 mainly oscillates around a first direction with respect to either the first elastic foot 212 or the second elastic foot 213. Through the cooperation of the two elastic elements 210, the cushion 300 mainly oscillates around the first and third directions, while restricting the cushion 300 from rotating around a second direction. This results in a smoother oscillation of the cushion 300 and a stronger load-bearing capacity for the entire automatic adjustment module 200. Furthermore, the entire automatic adjustment module 200 does not require a hinge structure, making the structure simpler, installation easier, operation more reliable, service life longer, and cost lower.

[0037] Reference Figure 4 and Figure 5 According to some embodiments of the present invention, in the automatic adjustment module 200, the first elastic feet 212 of the two elastic elements 210 are connected as one piece, thereby the two elastic elements 210 can be integrally formed, which is convenient for production and assembly.

[0038] It is conceivable that the aforementioned elastic element 210 can be configured in other ways. For example, in one embodiment, the aforementioned spiral body 211 can be replaced with an arc-shaped connecting part, and the first elastic foot 212 and the second elastic foot 213 are connected by the arc-shaped connecting part to form a U-shaped elastic element 210. In order to increase the load-bearing capacity of the entire automatic adjustment module 200, three or more elastic elements 210 can be provided. In other embodiments, the aforementioned elastic element 210 can also be configured as a compression spring. In this case, four compression springs are provided in each automatic adjustment module 200 and arranged in a rectangle according to the first direction and the third direction. Thus, under the restriction of the four compression springs, it is difficult for the cushion 300 to rotate around the second direction, but it is relatively easy for the cushion 300 to swing around the third direction or the first direction. At the same time, in the first direction, the springs near the middle position of the fixed seat 100 are shorter than the springs far from the middle position of the fixed seat 100, so that the cushion 300 can swing around the third direction more easily, thereby making it easier to achieve the left and right swing of the cushion 300.

[0039] Reference Figure 4 and Figure 5According to some embodiments of this utility model, in the automatic adjustment module 200, the first elastic feet 212 of the two elastic elements 210 are welded to the first mounting plate 220, and the first mounting plate 220 is installed on the fixed base 100 by bolts. This arrangement facilitates the connection between the elastic elements 210 and the fixed base 100, and also makes the installation of the elastic elements 210 more secure. Furthermore, the first mounting plate 220 is usually made of high-strength materials such as metal or engineering plastics, while the fixed base 100 can be made of ordinary plastic. Therefore, the first mounting plate 220 can distribute the force on the elastic elements 210, preventing the first elastic feet 212 from breaking through the fixed base 100 and improving structural strength.

[0040] Reference Figures 4 to 6 According to some embodiments of the present invention, each second elastic foot 213 is welded with a second mounting plate 230. The second mounting plate 230 is installed on the corresponding cushion 300 by bolts. With the above arrangement, it is convenient to connect the elastic element 210 and the cushion 300. At the same time, the second mounting plate 230 disperses the force of the elastic element 210 on the cushion 300, and prevents the second elastic foot 213 from breaking the cushion 300.

[0041] It is conceivable that the aforementioned automatic adjustment module 200 can also adopt other configuration methods. For example, the automatic adjustment module 200 includes a universal connector and a reset structure. The cushion 300 is installed on the fixed base 100 through the universal connector, and the reset structure is set between the fixed base 100 and the cushion 300. The reset structure can be a spring, two mutually repelling magnets, etc.

[0042] Reference Figure 4 and Figure 6 According to some embodiments of the present invention, the cushion 300 includes a soft cushion 310 and a support frame 320. The support frame 320 is connected to the corresponding automatic adjustment module 200. By adopting the above arrangement, the soft cushion 310 can be avoided from being directly connected to the automatic adjustment module 200, thereby protecting the soft cushion 310.

[0043] Reference Figure 4 and Figure 6 According to some embodiments of this utility model, the support frame 320 is annular, and the support frame 320 is provided with a suspended portion 321. The suspended portion 321 is located inside the support frame 320 and is suspended relative to the soft cushion 310. The support frame 320 is connected to the corresponding automatic adjustment module 200 through the suspended portion 321. Thus, while ensuring that the automatic adjustment module 200 is centrally connected to the back cushion 300, the softness of the middle part of the soft cushion 310 of the back cushion 300 is effectively guaranteed.

[0044] Reference Figures 1 to 3According to some embodiments of this utility model, the side of the cushion 300 facing away from the fixed base 100 is curved, and the curved surface is arc-shaped in the first direction and the third direction. As a result, the cushion 300 can better adapt to the shape of the human waist and further improve comfort.

[0045] The seat according to a second aspect embodiment of the present invention includes the aforementioned retractable lumbar support. This lumbar support can automatically adjust its angle according to the user's waist movement in two different directions, providing greater adaptability to the human body. Using this lumbar support in the seat improves comfort.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A retractable lumbar support, characterized in that, include: Fixture (100); Two automatic adjustment modules (200) are installed at a distance from each other on the fixed base (100) along a first direction. Two cushions (300) are installed one-to-one with the two automatic adjustment modules (200), and the cushions (300), the automatic adjustment modules (200) and the fixing base (100) are arranged sequentially along the second direction; The cushion (300) can swing around the first direction through the automatic adjustment module (200), and the cushion (300) can also swing around a third direction so that the two cushions (300) can swing inward toward the position between the two cushions (300), and the third direction is perpendicular to the first direction and the second direction.

2. The retractable lumbar support according to claim 1, characterized in that, The automatic adjustment module (200) includes at least two elastic elements (210), which are connected to the fixed seat (100) and the cushion (300), and the at least two elastic elements (210) are distributed along the third direction.

3. The retractable lumbar support according to claim 2, characterized in that, The elastic element (210) includes a spiral body (211) and a first elastic leg (212) and a second elastic leg (213) extending from the spiral body (211). The axis of the spiral body (211) is along the third direction. The first elastic leg (212) and the second elastic leg (213) are arranged at intervals along the second direction. The extension direction of the first elastic leg (212) and the extension direction of the second elastic leg (213) are both along the first direction. One of the first elastic leg (212) and the second elastic leg (213) of the elastic element (210) is connected to the fixed seat (100), and the other is connected to the corresponding cushion (300).

4. The retractable lumbar support according to claim 3, characterized in that, In the automatic adjustment module (200), the first elastic feet (212) of the two elastic elements (210) are connected as one unit.

5. The retractable lumbar support according to claim 3, characterized in that, In the automatic adjustment module (200), the first elastic foot (212) of the two elastic elements (210) is welded to the first mounting plate (220), and the first mounting plate (220) is installed on the fixed seat (100) by bolts.

6. The retractable lumbar support according to claim 3, characterized in that, Each of the second elastic feet (213) is welded with a second mounting plate (230), which is bolted to the corresponding cushion (300).

7. The retractable lumbar support according to any one of claims 1 to 6, characterized in that, The cushion (300) includes a soft pad (310) and a support frame (320), the support frame (320) being connected to the corresponding automatic adjustment module (200).

8. The retractable lumbar support according to claim 7, characterized in that, The support frame (320) is ring-shaped and has a suspended part (321). The suspended part (321) is located inside the support frame (320) and is suspended relative to the cushion (310). The support frame (320) is connected to the corresponding automatic adjustment module (200) through the suspended part (321).

9. The retractable lumbar support according to claim 1, characterized in that, The side of the cushion (300) facing away from the fixed seat (100) is curved, and the curved surface is arc-shaped in the first direction and the third direction.

10. A type of seat, characterized in that, Including the retractable lumbar support as described in any one of claims 1 to 9.

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