Waist supporting device

Abstract

The utility model belongs to the technical field of office chairs, and particularly relates to a waist supporting device. The supporting device comprises a waist pillow, a mounting assembly and a fixing plate. The waist pillow is rotatably connected with the mounting assembly, and the mounting assembly is slidably connected with the fixing plate; the mounting assembly comprises a rotary fixing part connected with the waist pillow, a sliding part connected with the fixing plate, and a limiting part detachably connected with the sliding part; a sliding groove is formed in the fixing plate, the mounting assembly further comprises a tablet assembly, and the tablet assembly comprises a tablet and a fixing piece. According to the waist pillow, the mounting assembly is improved, so that unpleasant collision sound generated when the height of the waist pillow is adjusted to the limit position is reduced or replaced, and the use experience is improved.

Description

Technical Field

[0001] This utility model belongs to the field of office chair technology, specifically relating to a lumbar support device. Background Technology

[0002] The lumbar spine is most affected by prolonged sitting, as it bears the entire weight of the upper body, making it prone to fatigue and injury. Current office and home chairs typically consist only of a seat cushion and a backrest; the cushion supports the buttocks, and the backrest supports the back. However, with evolving postures, existing office and home chairs cannot automatically provide support for the lumbar spine, thus failing to reduce stress and fatigue.

[0003] To this end, document CN218832377U discloses a lumbar support device, including a lumbar pillow, a movable mounting assembly, and a fixing plate. The movable mounting assembly includes a mounting member connected between the lumbar pillow and the fixing plate. The mounting member includes a mounting body, a first mounting part, and a second mounting part. The first mounting part is slidably connected to the fixing plate, and the second mounting part is rotatably connected to the lumbar pillow. This solution enables the lumbar pillow to rotate relative to the mounting member in a direction closer to or further away from the fixing plate under the action of external force. The lumbar pillow drives the mounting member to slide relative to the fixing plate in a first direction D1 or the opposite direction of the first direction D1. This allows the position of the lumbar pillow in the first direction D1 and its angle relative to the fixing plate to change with the adjustment of the human sitting posture, thereby automatically supporting the human lumbar spine.

[0004] However, the above structure still has a problem: the sliding connection between the first mounting part and the sliding plate is achieved by the sliding block sliding in the groove. When the sliding block moves to the limit position and hits the inner wall of the groove, it will produce unpleasant noise and affect the user experience. Utility Model Content

[0005] To address the aforementioned problems, the purpose of this utility model is to provide a lumbar support device that, through improvements to the mounting components, aims to reduce or replace the unpleasant clattering sound emitted when the lumbar pillow is adjusted to its extreme position, thereby enhancing the user experience.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A lumbar support device includes a lumbar pillow, a mounting assembly, and a fixing plate; the lumbar pillow is rotatably connected to the mounting assembly, and the mounting assembly is slidably connected to the fixing plate; the mounting assembly includes a rotating fixing part connected to the lumbar pillow, a sliding part connected to the fixing plate, and a limiting part detachably connected to the sliding part; the fixing plate is provided with a sliding groove; the sliding part slides in the sliding groove along a first direction D1 or a fourth direction D4, or slides in the sliding groove along the opposite direction of the first direction D1 or the opposite direction of the fourth direction D4;

[0008] The end of the sliding part that protrudes from the fixed plate and is away from the rotating fixed part is connected to the limiting part;

[0009] The sliding part has a first end impact surface, and the sliding groove has a first inner wall impact surface that is opposite to the first end impact surface; when the limiting part moves to the first limit position, the first end impact surface and the first inner wall impact surface are at the minimum distance.

[0010] The mounting assembly further includes a sound plate assembly, which includes a sound plate and a fixing plate, and the sound plate and the fixing plate are respectively disposed at the first end impact surface and the first inner wall impact surface; at the minimum distance, the sound plate and the fixing plate abut against each other.

[0011] As a further preferred embodiment of this utility model, the sound plate covers the entire first end impact surface, the fixing plate covers the entire first inner wall impact surface, and both the sound plate and the fixing plate are sound-absorbing plates.

[0012] As a further preferred embodiment of this utility model, both the sound plate and the fixing plate are sound-producing plates; at the minimum distance, the sound plate and the fixing plate collide with each other to generate a first sound.

[0013] As a further preferred embodiment of the present invention, the sound plate assembly further includes a sound-producing post and a positioning post; at least one of the sound-producing post or the positioning post protrudes from the sound plate or the fixing plate, and at least one of the sound-producing post or the positioning post retracts into the sound plate or the fixing plate; at the minimum distance, the sound-producing post and the positioning post collide with each other to generate a second sound.

[0014] As a further preferred embodiment of the present invention, the sound chip is disposed on the side end of the limiting portion near the first end impact surface, and the end of the sound chip away from the limiting portion is retracted into the groove.

[0015] As a further preferred embodiment of the present invention, an elastic body is provided on the surface of the sound plate located at the end away from the limiting portion and close to the first end impact surface.

[0016] As a further preferred embodiment of this utility model, a fixed base plate is connected to the side end of the sound plate near the limiting part, and the fixed base plate is detachably connected to the limiting part.

[0017] As a further preferred embodiment of the present invention, the mounting assembly further includes a base, wherein the rotating fixing part and the sliding part protrude from two opposing surfaces of the base.

[0018] As a further preferred embodiment of this utility model, a roller is provided on the surface of the base near the fixing plate; a limiting groove matching the roller is provided on the surface of the fixing plate, and the length of the limiting groove is greater than or equal to the length of the sliding groove.

[0019] As a further preferred embodiment of the present invention, the mounting assembly further includes a fixing post disposed in the middle of the surface of the base near the fixing plate; the fixing plate is provided with a strip-shaped hole matching the fixing post, and a fixing block is provided on the surface of the fixing plate away from the base; the fixing block is located on one end side of the strip-shaped hole, and the fixing block and the end of the strip-shaped hole protruding from the surface of the fixing plate are connected by a spring.

[0020] The beneficial effects of this utility model are:

[0021] The sound chip assembly provided by this utility model can reduce or replace the unpleasant clattering sound emitted when the height of the lumbar pillow is adjusted to the extreme position, thereby improving the user experience. Attached Figure Description

[0022] Appendix Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Appendix Figure 2 This is a three-dimensional structural diagram of the mounting component of this utility model.

[0024] Appendix Figure 3 This is an exploded structural diagram of the mounting component of this utility model.

[0025] Appendix Figure 4 This is a three-dimensional structural diagram of the mounting component of this utility model.

[0026] Appendix Figure 5 This is a schematic diagram of the installation structure of the audio chip assembly of this utility model.

[0027] Appendix Figure 6 This is a schematic diagram showing the connection relationship between the roller and the limiting groove of this utility model.

[0028] Appendix Figure 7 This is a schematic diagram of another structure of the audio chip assembly of this utility model.

[0029] Appendix Figure 8This is a schematic diagram of another structure of the audio chip assembly of this utility model.

[0030] Appendix Figure 9 This is a schematic diagram of another structure of the audio chip assembly of this utility model.

[0031] Attached diagram descriptions: First direction D1, Second direction D2, Third direction D3, Fourth direction D4;

[0032] Lumbar pillow 100, mounting components 200, fixing plate 300;

[0033] Rotating fixing part 210, sliding part 220, limiting part 230, sound plate assembly 240, base 250, roller 260, fixing post 270;

[0034] First impact surface 2201, second impact surface 2202;

[0035] Sound plate 2401, fixing plate 2402, sound-producing post 2403, positioning post 2404;

[0036] Elastomer 2401a, fixed base plate 2401b;

[0037] Slide groove 310, limiting groove 320, strip hole 330, fixing block 340;

[0038] First inner wall impact surface 3101, second inner wall impact surface 3102. Detailed Implementation

[0039] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component 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.

[0040] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0041] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] This embodiment provides a lumbar support device, as shown in the attached figure. Figure 1 ~Appendix Figure 3 As shown, the device includes a lumbar pillow 100, a mounting assembly 200, and a fixing plate 300. The lumbar pillow 100 is rotatably connected to the mounting assembly 200, and the mounting assembly 200 is slidably connected to the fixing plate 300. The mounting assembly 200 includes a rotating fixing part 210 connected to the lumbar pillow 100, a sliding part 220 connected to the fixing plate 300, and a limiting part 230 detachably connected to the sliding part 220. The fixing plate 300 is provided with a sliding groove 310. The sliding part 220 slides within the sliding groove 310 along a first direction D1 or a fourth direction D4, or along the opposite direction of the first direction D1 or the opposite direction of the fourth direction D4. The end of the sliding part 220 protruding from the fixing plate 300 and away from the rotating fixing part 210 is connected to the limiting part 230.

[0043] Wherein, the first direction D1 is the direction of gravity (height direction) of the lumbar pillow 100; the fixing plate 300 can drive the mounting component 200, thereby causing the lumbar pillow 100 to slide along the first direction D1 or the opposite direction of the first direction D1. The first direction D2 is a direction perpendicular to the first direction D1, and the width of the slide groove 310 extends along the second direction. Preferably, there are two slide grooves 310, which are spaced apart along the second direction and are not interconnected. This arrangement helps to improve the stability of the mounting component 200 on the fixing plate 300. Correspondingly, there are also two sliding parts 220, each sliding within one of the two slide grooves 310; and there are also two limiting parts 230, each used to restrict the two sliding parts 220 within the slide grooves 310 respectively, preventing the sliding parts 220 from falling off.

[0044] In some cases, the slide 310 extends along the first direction D1, in which case the mounting assembly 200 slides relative to the fixing plate 300 in the first direction D1 or the opposite direction of the first direction D1. In other preferred cases, as shown in the attached... Figure 3As shown, the slide groove 310 extends along the fourth direction D4, forming an acute angle with the first direction D1. The slide groove 310 can be a straight groove or an arc-shaped groove. Specifically, along the first direction D1, the distance between the slide groove 310 and the surface of the fixing plate 300 gradually increases. This design allows the lumbar pillow 100 to slide along the first direction D1 or the opposite direction of the first direction D1 under external force, while also sliding towards or away from the fixing plate 300. This ensures that when the center of gravity of the lumbar spine changes in the direction of approaching or moving away from the fixing plate 300, the lumbar pillow 100 can also be moved, guaranteeing that the lumbar pillow always fits against and supports the lumbar spine.

[0045] As attached Figure 5 As shown, the sliding part 220 has a first end impact surface 2201, and the sliding groove 310 has a first inner wall impact surface 3101 that is disposed opposite to the first end impact surface 2201; when the limiting part 230 moves to the first limit position, the first end impact surface 2201 and the first inner wall impact surface 3101 are at the minimum distance.

[0046] The first inner wall impact surface 3101 is the inner sidewall of the slide groove 310 in the width direction, and the first end impact surface 2201 is the outer sidewall of the sliding part 220 closest to the inner sidewall. Therefore, the slide groove 310 should also have a second inner wall impact surface 3102 located at the other end, and the sliding part 220 should also have a corresponding second end impact surface 2202. The limiting part 230 also has a second limit position. Correspondingly, a sound plate assembly 240 as described below should also be provided at the second inner wall impact surface 3102 and the second end impact surface 2202. The first limit position corresponds to the limit position that the sliding part 220 can reach when it moves in the first direction or the fourth direction within the slide groove 310, and the second limit position corresponds to the limit position that the sliding part 220 can reach when it moves in the opposite direction of the first direction or the fourth direction within the slide groove 310. When the sliding part 220 has no additional limiting function other than the limiting part 230 and the groove 310, the minimum distance between the first end impact surface 2201 and the first inner wall impact surface 3101 should be infinitely close to zero. At this time, the first end impact surface 2201 and the first inner wall impact surface 3101 will produce an unpleasant impact sound. The unpleasantness of the sound is mainly caused by factors such as the impact force and the materials that are colliding with each other. The main technical problem of this device is to deal with the unpleasant impact sound.

[0047] Specifically, the mounting assembly 200 further includes a sound plate assembly 240, which includes a sound plate 2401 and a fixing plate 2402, and the sound plate 2401 and the fixing plate 2402 are respectively disposed at the first end impact surface 2201 and the first inner wall impact surface 3101; at the minimum distance, the sound plate 2401 and the fixing plate 2402 abut against each other. The abutment or collision between the sound plate 2401 and the fixing plate 2402 replaces the collision between the first end impact surface 2201 and the first inner wall impact surface 3101, mainly by changing the material of the impact surfaces to address unpleasant sounds.

[0048] In some embodiments, the sound-absorbing sheet 2401 covers the entire first end impact surface 2201, and the fixing sheet 2402 covers the entire first inner wall impact surface 3101. Both the sound-absorbing sheet 2401 and the fixing sheet 2402 are sound-absorbing sheets. As the name suggests, a sound-absorbing sheet can be a sheet-like structure made of a material with good sound absorption properties. The sound-absorbing material can be organic fiber, inorganic fiber, inorganic foam, foam plastic, etc., or it can be a composite material, or a resonant sound-absorbing structure formed by structural improvements. These sound absorption methods are all existing technologies and will not be described in detail. Considering the space occupied, the preferred embodiment of this device is a sheet-like sound-absorbing sheet made of a material with good sound absorption properties.

[0049] In other embodiments, as shown in the appendix Figure 7 As shown, both the sound plate 2401 and the fixing plate 2402 are sound-producing plates. At the minimum distance, the sound plate 2401 and the fixing plate 2402 collide with each other to produce a first sound. As the name suggests, a sound-producing plate is a thin plate that can produce sound. Specifically, the collision of two thin plates causes the plates to vibrate, thereby producing sound. The sound produced by the thin plate (the first sound) should be more pleasant than the collision sound of the first end impact surface 2201 and the first inner wall impact surface 3101. The key factor determining the pleasantness of the sound is generally the material. Under normal circumstances, the sound-producing plate is made of metal material, which can produce a pleasant first sound. This sound replaces the collision sound of the first end impact surface 2201 and the first inner wall impact surface 3101. In addition to reminding the extreme position of movement, it also reduces ear discomfort and helps to improve the user experience.

[0050] As some preferred embodiments, see the appendix. Figure 8As shown, the sound plate assembly 240 further includes a sound-producing post 2403 and a positioning post 2404; at least one of the sound-producing post 2403 or the positioning post 2404 protrudes from the sound plate 2401 or the fixing plate 2402, and at least one of the sound-producing post 2403 or the positioning post 2404 retracts into the sound plate 2401 or the fixing plate 2402; at the minimum distance, the sound-producing post 2403 and the positioning post 2404 collide with each other to generate a second sound. The advantage of this arrangement is that it can increase the sound generated by the impact, allowing the sound to have different timbres and different scales, thereby improving the pleasantness. Therefore, the sound-producing post 2403 and the positioning post 2404 can be made of any material in the prior art that emits a second sound different from the first sound upon impact.

[0051] As some preferred embodiments, see the appendix. Figure 9 As shown, the sound plate 2401 is disposed on the side end of the limiting part 230 near the first end impact surface 2201, and the end of the sound plate 2401 away from the limiting part 230 is retracted into the groove 310. Specifically, a fixed base plate 2401b is connected to the side end of the sound plate 2401 near the limiting part 230, and the fixed base plate 2401b is detachably connected to the limiting part 230. This arrangement takes into account the large wear of the sound plate 2401, and the connection with the limiting part 230 facilitates the disassembly and replacement of the sound plate 2401; and since the sound plate 2401 is installed on the side of the limiting part 230, there is a gap between the sound plate 2401 and the first end impact surface 2201. The gap allows the sound plate 2401 to vibrate within its defined space after a collision, and the vibration can further make the sound plate 2401 produce a timbre different from that of the collision, thus enriching the sound.

[0052] In some preferred embodiments, an elastomer 2401a is provided on the surface of the sound plate 2401 located at the end away from the limiting portion 230 and close to the first end impact surface 2201. The material of the elastomer 2401a can be selected from the prior art, such as rubber, and its main function is to reduce wear between the sound plate 2401 and the first end impact surface 2201.

[0053] As some preferred embodiments, see the appendix. Figure 4As shown, the mounting assembly 200 also includes a base 250, with the rotating fixing part 210 and the sliding part 220 protruding from two opposing surfaces of the base 250. A roller 260 is provided on the surface of the base 250 near the fixing plate 300; a limiting groove 320 matching the roller 260 is provided on the surface of the fixing plate 300, the length of which is greater than or equal to the length of the sliding groove 310. This arrangement enhances the stability of the sliding part 220's movement and further limits the trajectory of the sliding part 220 within the sliding groove 310, preventing the sides of the sliding part 220 (excluding the first impact surface 2201 and the second impact surface 2202) from colliding or rubbing against the sliding groove 310, thus avoiding additional noise interference.

[0054] As some preferred embodiments, see the appendix. Figure 3 As shown, the mounting assembly 200 further includes a fixing post 270 disposed in the middle of the surface of the base 250 near the fixing plate 300; the fixing plate 300 is provided with a strip-shaped hole 330 matching the fixing post 270, and a fixing block 340 is provided on the surface of the fixing plate 300 away from the base 250; the fixing block 340 is located on one end side of the strip-shaped hole 330, and the fixing block 340 and the end of the strip-shaped hole 330 protruding from the surface of the fixing plate 300 are connected by a spring. The strip-shaped hole 330 is arranged parallel to the middle of the two sliding grooves 310 and is not connected to either of them, allowing the fixing post 270 to slide, while the fixing block 340 is located at the extension of the strip-shaped hole 330. Both the fixing block 340 and the fixing post 270 are provided with fixing points for fixing the spring. The spring can be a tension spring or a support spring. The tension spring causes the fixing post 270 to move in a first or fourth direction towards the fixing block 340, while the support spring causes the fixing post 270 to move in a first or fourth direction away from the fixing block 340. Regardless of the type of spring used, it is necessary to ensure that when the first impact surface 2201 or the second impact surface 2202 is at its minimum distance from the first inner wall impact surface 3101 or the second inner wall impact surface 3102, the force generated by the elastic potential energy of the spring causes the first impact surface 2201 and the first inner wall impact surface 3101, or the second impact surface 2202 and the second inner wall impact surface 3102, to tend to move away from each other. Therefore, under the action of the spring, the minimum distance is greater than zero. Thus, by setting the spring, the probability of a collision sound can be greatly reduced. Therefore, the spring is an added structure based on the fact that both the sound plate 2401 and the fixing plate 2402 are sound-absorbing plates, and the final solution helps to improve the noise reduction effect.

[0055] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A waist support device, comprising a waist pillow (100), a mounting assembly (200), a fixing plate (300); the waist pillow (100) is rotatably connected with the mounting assembly (200), and the mounting assembly (200) is slidably connected with the fixing plate (300); characterized in that: The mounting assembly (200) includes a rotating fixing part (210) connected to the lumbar pillow (100), a sliding part (220) connected to the fixing plate (300), and a limiting part (230) detachably connected to the sliding part (220); the fixing plate (300) is provided with a sliding groove (310); the sliding part (220) slides in the sliding groove (310) along a first direction D1 or a fourth direction D4, or slides in the sliding groove (310) along the opposite direction of the first direction D1 or the opposite direction of the fourth direction D4; The end of the sliding part (220) that protrudes from the fixed plate (300) and is away from the rotating fixed part (210) is connected to the limiting part (230); The sliding part (220) has a first end impact surface (2201), and the sliding groove (310) has a first inner wall impact surface (3101) disposed opposite to the first end impact surface (2201); when the limiting part (230) moves to the first limit position, the first end impact surface (2201) and the first inner wall impact surface (3101) are at the minimum distance; The mounting assembly (200) further includes a sound plate assembly (240), which includes a sound plate (2401) and a fixing plate (2402), and the sound plate (2401) and the fixing plate (2402) are respectively disposed at the first end impact surface (2201) and the first inner wall impact surface (3101); at the minimum distance, the sound plate (2401) and the fixing plate (2402) abut against each other.

2. A lumbar support device according to claim 1, wherein: The sound plate (2401) covers the entire first end impact surface (2201), and the fixing plate (2402) covers the entire first inner wall impact surface (3101). Both the sound plate (2401) and the fixing plate (2402) are sound-absorbing plates.

3. A lumbar support device according to claim 1, wherein: Both the sound plate (2401) and the fixed plate (2402) are sound-producing plates; at the minimum distance, the sound plate (2401) and the fixed plate (2402) collide with each other to produce a first sound.

4. A lumbar support device according to claim 3, wherein: The sound plate assembly (240) further includes a sound-producing post (2403) and a positioning post (2404); at least one of the sound-producing post (2403) or the positioning post (2404) protrudes from the sound plate (2401) or the fixing plate (2402), and at least one of the sound-producing post (2403) or the positioning post (2404) retracts into the sound plate (2401) or the fixing plate (2402); at the minimum distance, the sound-producing post (2403) and the positioning post (2404) collide with each other to generate a second sound.

5. A lumbar support device according to claim 3, wherein: The sound chip (2401) is disposed on the side end of the limiting part (230) near the first end impact surface (2201), and the end of the sound chip (2401) away from the limiting part (230) is retracted into the groove (310).

6. A lumbar support device according to claim 5, wherein: An elastomer (2401a) is provided on the surface of the sound plate (2401) located at the end away from the limiting part (230) and close to the first end impact surface (2201).

7. A lumbar support device according to claim 5, characterized in that: The sound plate (2401) is connected to a fixed base plate (2401b) at the side end near the limiting part (230), and the fixed base plate (2401b) is detachably connected to the limiting part (230).

8. A lumbar support device according to claim 1, wherein: The mounting assembly (200) also includes a base (250), and the rotating fixing part (210) and the sliding part (220) protrude from two opposing surfaces of the base (250).

9. A lumbar support device according to claim 8, wherein: The base (250) has a roller (260) on its surface near the fixing plate (300); the fixing plate (300) has a limiting groove (320) matching the roller (260) on its surface, and the length of the limiting groove (320) is greater than or equal to the length of the slide groove (310).

10. A lumbar support device according to claim 8, wherein: The mounting assembly (200) further includes a fixing post (270) disposed in the middle of the surface of the base (250) near the fixing plate (300); the fixing plate (300) is provided with a strip hole (330) matching the fixing post (270), and a fixing block (340) is provided on the surface of the fixing plate (300) away from the base (250); the fixing block (340) is located on one side of the end of the strip hole (330), and the fixing block (340) and the end of the strip hole (330) protruding from the surface of the fixing plate (300) are connected by a spring.

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