Backrest slow descending structure of fitness stool

Abstract

The utility model provides a body-building stool backrest slow descending structure, which comprises a rotating shaft damping assembly, a connecting piece, a seat cushion, a backrest, a first locking piece and a body-building stool body, the seat cushion is arranged on the body-building stool body in a sliding manner, the backrest is rotatably connected with the seat cushion, and the first locking piece is connected with the rotating shaft damping assembly. The rotating shaft damping assembly is arranged in a first rotating inner hole between the cushion and the backrest, and the end of the rotating shaft damping assembly is connected with the cushion through a connecting piece and a first locking piece. According to the fitness stool, the existing space of the fitness stool is reasonably and efficiently utilized, the rotating shaft damping assembly which can be directly arranged in the first rotating inner hole is specifically designed, and the backrest adjusting structure is optimally designed, so that the backrest slowly descends; according to the utility model, the humanized design degree of a product and the use experience of a user can be effectively improved.

Description

Technical Field

[0001] The utility model relates to a backrest adjustment structure of a fitness stool, in particular to a backrest slow-down structure of a fitness stool. Background Art

[0002] In the field of fitness equipment, especially in the design of fitness benches, users have an increasing demand for product functionality and ease of use. Although traditional fitness benches provide basic seat and backrest adjustment functions, most products lack the convenience of backrest adjustment and the degree of humanized design. For example, the backrest angle adjustment mechanism of some fitness benches is relatively simple and lacks an effective and targeted slow-down function. If conventional slow-down structures in other fields are directly utilized, they will obviously not be able to adapt well to the existing structure of fitness benches. This not only affects the user's fitness experience, but may also cause safety hazards due to improper adjustment. The humanized design of the product urgently needs to be improved. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a slow-down structure for the backrest of a fitness bench, so as to reasonably utilize the existing space of the fitness bench, optimize the design of the backrest adjustment structure, realize the slow descent of the backrest, and enhance the humanized design of the product and the user experience.

[0004] In this regard, the utility model provides a backrest slow-down structure for a fitness bench, comprising: a rotating shaft damping assembly, a connecting piece, a seat cushion, a backrest, a first locking piece and a fitness bench body, the seat cushion being slidably arranged on the fitness bench body, the backrest being rotatably connected to the seat cushion, the rotating shaft damping assembly being arranged in the first rotating inner hole between the seat cushion and the backrest, and the end of the rotating shaft damping assembly being connected to the seat cushion through a connecting piece and a first locking piece.

[0005] A further improvement of the present utility model is that the rotating shaft damping assembly includes a main shaft, a friction plate, a fixing part, an elastic gasket and a second locking part, and a first limiting shaft and a second limiting shaft are respectively provided at both ends of the main shaft. The first end of the main shaft is fixedly connected to the connecting part through the first limiting shaft; the second end of the second limiting shaft passes through the friction plate, the fixing part and the elastic gasket and is fixedly connected to the second locking part.

[0006] A further improvement of the present invention is that a second rotating inner hole is provided on the inner wall of the fixing member, and the fixing member is rotatably connected to the second end of the main shaft through the second rotating inner hole.

[0007] A further improvement of the present invention is that an anti-rotation structure is provided on the outer wall of the fixing member, and the anti-rotation structure includes a polygonal shape; and the elastic gasket includes multiple layers of gaskets that are overlapped.

[0008] A further improvement of the present invention is that both the first limiting axis and the second limiting axis adopt a flat axis structure, both sides of the flat axis structure are symmetrical limiting planes, and an arc axis is set between the limiting planes on both sides.

[0009] A further improvement of the present invention is that a limiting hole is provided in the middle of the friction plate, and the shape and size of the limiting hole match the shape and size of the flat shaft structure of the second limiting shaft.

[0010] A further improvement of the present invention is that a threaded fixing end is further provided on the main shaft, the threaded fixing end is provided at an end of the second limiting shaft away from the first limiting shaft, and the second locking member is connected to the threaded fixing end.

[0011] A further improvement of the present invention is that the length of the threaded fixing end is greater than the thickness of the second locking member.

[0012] A further improvement of the present invention is that the number of the friction plates is multiple, and the arrangement positions of the multiple friction plates include any one or more positions between the main shaft and the fixing part, between the fixing part and the elastic gasket, and between the elastic gasket and the second locking part.

[0013] A further improvement of the present invention is that the connecting member includes a connected rotating shaft and a locking seat, the limiting inner hole of the rotating shaft is connected to the first limiting shaft of the main shaft, and the locking seat is fixedly connected to the bottom of the seat cushion through the first locking member.

[0014] Compared with the prior art, the beneficial effect of the present invention is that: the shaft damping assembly is arranged in the first rotating inner hole between the seat cushion and the backrest, and the end of the shaft damping assembly is connected to the seat cushion through a connecting piece and a first locking piece. On this basis, a shaft damping assembly suitable for the slow descent of the backrest is also designed specifically, so that when the backrest is descending, the second limiting shaft ensures that the friction plate always rotates synchronously with the main shaft, and during the rotation process, the elastic gasket locked by the second locking piece generates a damping torque to achieve the slow descent of the backrest. Therefore, the present invention rationally and efficiently utilizes the existing space of the fitness bench, and specifically designs a shaft damping assembly that can be directly arranged in the first rotating inner hole, optimizes the design of the backrest adjustment structure to achieve the slow descent of the backrest. The present invention can effectively improve the humanized design of the product and the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the exploded structure of a shaft damping assembly according to one embodiment of the present utility model;

[0016] Figure 2 This is a structural diagram of a shaft damping assembly according to an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the explosion structure of an embodiment of the utility model;

[0018] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of A;

[0019] Figure 5 It is a schematic cross-sectional view of the local structure of an embodiment of the utility model after assembly. DETAILED DESCRIPTION

[0020] In the description of this utility model, if there is a description of orientation, such as "upper", "lower", "front", "back", "left", "right", etc., the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on this utility model. If a technical feature is referred to as being "set", "fixed", "connected", or "installed" on another technical feature, it can be directly set, fixed, or connected to the other technical feature, or it can be indirectly set, fixed, connected, or installed on the other technical feature.

[0021] In the description of this utility model, if "several" is mentioned, it means more than one; if "plurality" is mentioned, it means more than two; if "greater than," "less than," or "exceeds," it should be understood as excluding the number itself; if "above," "below," or "within" is mentioned, it should be understood as including the number itself. If "first," "second," etc. is mentioned, it should be understood that it is only used to distinguish the names of identical or similar technical features, and should not be understood to imply or indicate the relative importance of the technical features, the number of technical features, or the order of the technical features.

[0022] The preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 5As shown, this embodiment provides a backrest slow-down structure for a fitness bench, including: a rotating shaft damping assembly, a connecting member 6, a seat cushion 7, a backrest 8, a first locking member 9 and a fitness bench body 10, the seat cushion 7 is slidably arranged on the fitness bench body 10, and the backrest 8 is rotatably connected to the seat cushion 7 through a rotating connecting member 82; the rotating shaft damping assembly is arranged in the first rotating inner hole 81 between the seat cushion 7 and the backrest 8, and the end of the rotating shaft damping assembly is connected to the seat cushion 7 through the connecting member 6 and the first locking member 9.

[0024] like Figures 1 to 4 As shown, preferably, the shaft damping assembly of this embodiment includes a main shaft 1, a friction plate 2, a fixing member 3, an elastic gasket 4, and a second locking member 5. A first limiting shaft 11 and a second limiting shaft 12 are respectively provided at both ends of the main shaft 1. The first end of the main shaft 1 is fixedly connected to the connecting member 6 via the first limiting shaft 11; the second end of the second limiting shaft 12 passes through the friction plate 2, the fixing member 3, and the elastic gasket 4 and is fixedly connected to the second locking member 5. When the backrest is lowered, the second limiting shaft 12 ensures that the friction plate 2 always rotates synchronously with the main shaft 1. During the rotation process, the elastic gasket 4, which is locked by the second locking member 5, generates a damping torque to achieve a slow lowering of the backrest 8.

[0025] like Figures 3 to 5 As shown, in this embodiment, the first rotating inner hole 81 refers to the inner hole structure of the rotating connector 82 between the seat cushion 7 and the backrest 8. The rotating connector 82 is preferably arranged in the backrest 8, and the backrest 8 is rotatably connected to the seat cushion 7 via the rotating connector 82. The rotating shaft damping assembly refers to a specifically designed rotating shaft damping assembly that can be directly arranged in the first rotating inner hole 81 to reasonably and efficiently utilize the existing space of the fitness bench. By adding the rotating shaft damping assembly, the connector 6 and the first locking member 9, and adaptively designing the rotating connector 82 between the seat cushion 7 and the backrest 8, the backrest can be effectively slowly lowered. This embodiment can reasonably utilize the existing space without changing the main structure of the existing fitness bench, achieve product upgrades and optimized design, and effectively improve the product's humanized design and user experience.

[0026] like Figure 1As shown, the inner wall of the fixing member 3 of this embodiment is provided with a second rotating inner hole 31, and the fixing member 3 is rotatably connected to the second end of the main shaft 1 through the second rotating inner hole 31, so as to realize the rotation of the main shaft 1 in the fixing member 3. It should be noted that the outer wall of the fixing member 3 is provided with an anti-rotation structure, which includes a polygonal shape, including but not limited to a hexagonal or quadrilateral shape, to prevent the fixing member 3 from rotating itself; at this time, the inner wall structure and size of the first rotating inner hole 81 are preferably matched with the outer wall structure and size of the fixing member 3, so that in the first rotating inner hole 81, the fixing member 3 does not rotate, while the main shaft 1 in the fixing member 3 rotates, and drives the synchronous rotation of the friction plate 2, and the elastic gasket 4 generates a damping torque under the pressure of the second locking member 5 to realize the backrest slow-down function.

[0027] Preferably, Figure 1 and Figure 2 As shown, the elastic gasket 4 of this embodiment comprises multiple overlapping gaskets. Under the pressure of the second locking member 5, the elastic gasket 4 generates a damping torque. The second locking member 5 preferably employs a nut structure with an internal thread. The number of elastic gaskets 4 can be adjusted according to actual conditions and needs, ensuring sufficient installation and adjustment space for the second locking member 5.

[0028] Preferably, Figures 1 to 3 As shown, in this embodiment, both the first limiting shaft 11 and the second limiting shaft 12 utilize a flat shaft structure, with symmetrical limiting planes on either side of the flat shaft structure, and an arcuate axis disposed between the limiting planes. In other words, the flat shaft structure does not utilize a traditional cylindrical shaft body, but instead utilizes a flat shaft having both limiting planes and an arcuate axis. This allows for both a position-limiting connection with the friction plate 2 and a rotational connection with the fixing member 3, resulting in a simpler and more efficient overall structural design.

[0029] Correspondingly, such as Figure 1 As shown, a limiting hole 21 is provided in the middle of the friction plate 2 in this embodiment, and the shape and size of the limiting hole match the shape and size of the flat shaft structure of the second limiting shaft 12 to ensure that the friction plate 2 always rotates synchronously with the main shaft 1.

[0030] like Figures 1 to 5 As shown, the main shaft 1 of this embodiment is further provided with a threaded fixing end 13 , which is arranged at the end of the second limiting shaft 12 away from the first limiting shaft 11 , and the second locking member 5 is connected to the threaded fixing end 13 .

[0031] It is worth noting that, since the damping torque generated by the elastic gasket 4 is affected by the pressure of the second locking member 5, it is preferred that Figure 1 and Figure 2 As shown, the length of the threaded fixing end 13 in this embodiment is greater than the thickness of the second locking member 5, so that the second locking member 5 can be fixed at different positions of the threaded fixing end 13 to provide different pressure effects. This embodiment can adjust the damping torque generated by the elastic gasket 4 by adjusting the position of the second locking member 5 on the threaded fixing end 13, and then control the slow descent speed of the backrest 8 to meet different practical application requirements. In actual applications, if you want the damping torque for slow descent to be larger, that is, the descent speed of the backrest 8 to be slower, you only need to further tighten the second locking member 5; on the contrary, if you want the damping torque for slow descent to be smaller, that is, the descent speed of the backrest 8 to be faster, you need to loosen the second locking member 5. The adjustment process is simple and efficient, and no additional adjustment structure is required.

[0032] The friction plates 2 of this embodiment are multiple in number, and the multiple friction plates 2 are arranged at any one or more locations including between the main shaft 1 and the fixing member 3, between the fixing member 3 and the elastic gasket 4, and between the elastic gasket 4 and the second locking member 5. Preferably, as Figure 1 As shown, the friction plates 2 are provided between the main shaft 1 and the fixing member 3, between the fixing member 3 and the elastic gasket 4, and between the elastic gasket 4 and the second locking member 5 to ensure the friction force and the reliability of the slow-descent structure.

[0033] like Figure 3 and Figure 4 As shown, the connector 6 of this embodiment includes a connected rotating shaft 61 and a locking seat 62. The limiting inner hole 63 of the rotating shaft 61 is connected to the first limiting shaft 11 of the main shaft 1, and the locking seat 62 is fixedly connected to the bottom of the seat cushion 7 via the first locking member 9. The shape and size of the limiting inner hole 63 match the shape and size of the flat shaft structure of the first limiting shaft 11 to ensure the reliability of their synchronous rotation. The connector 6 is the connection structure between the rotating shaft damping assembly and the seat cushion 7. The first locking member 9 can adopt a variety of locking structures such as screws, bolts, or bolts, and the selection is based on actual assembly requirements.

[0034] The specific implementation methods described above are preferred implementation methods of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to the specific implementation methods. All equivalent changes made in accordance with the shape and structure of the present invention are within the scope of protection of the present invention.

Claims

1. A backrest slow-down structure for a fitness bench, characterized in that: include: A rotating shaft damping assembly, a connecting member (6), a seat cushion (7), a backrest (8), a first locking member (9) and a fitness bench body (10), wherein the seat cushion (7) is slidably arranged on the fitness bench body (10), the backrest (8) is rotationally connected to the seat cushion (7), the rotating shaft damping assembly is arranged in a first rotating inner hole (81) between the seat cushion (7) and the backrest (8), and the end of the rotating shaft damping assembly is connected to the seat cushion (7) through the connecting member (6) and the first locking member (9).

2. The backrest slow-down structure of the fitness bench according to claim 1, characterized in that: The rotating shaft damping assembly comprises a main shaft (1), a friction plate (2), a fixing member (3), an elastic gasket (4) and a second locking member (5), wherein a first limiting shaft (11) and a second limiting shaft (12) are respectively provided at both ends of the main shaft (1), and the first end of the main shaft (1) is fixedly connected to the connecting member (6) through the first limiting shaft (11); and the second end of the second limiting shaft (12) passes through the friction plate (2), the fixing member (3) and the elastic gasket (4) and is fixedly connected to the second locking member (5).

3. The backrest slow-down structure of the fitness bench according to claim 2, characterized in that: The inner wall of the fixing member (3) is provided with a second rotating inner hole (31), and the fixing member (3) is rotatably connected to the second end of the main shaft (1) through the second rotating inner hole (31).

4. The backrest slow-down structure of the fitness bench according to claim 3, characterized in that: The outer wall of the fixing member (3) is provided with an anti-rotation structure, and the anti-rotation structure comprises a polygonal shape; the elastic gasket (4) comprises multiple layers of gaskets arranged in an overlapping manner.

5. The backrest slow-down structure of the fitness bench according to any one of claims 2 to 4, characterized in that: The first limiting axis (11) and the second limiting axis (12) both adopt a flat axis structure, the two sides of the flat axis structure are symmetrical limiting planes, and an arc axis is set between the limiting planes on both sides.

6. The backrest slow-down structure of the fitness bench according to claim 5, characterized in that: A limiting hole (21) is provided in the middle of the friction plate (2), and the shape and size of the limiting hole match the shape and size of the flat shaft structure of the second limiting shaft (12).

7. The backrest slow-down structure of the fitness bench according to any one of claims 2 to 4, characterized in that: The main shaft (1) is further provided with a threaded fixing end (13), which is provided at an end of the second limiting shaft (12) away from the first limiting shaft (11), and the second locking member (5) is connected to the threaded fixing end (13).

8. The backrest slow-down structure of the fitness bench according to claim 7, characterized in that: The length of the threaded fixing end (13) is greater than the thickness of the second locking member (5).

9. The backrest slow-down structure of the fitness bench according to any one of claims 2 to 4, characterized in that: The number of the friction plates (2) is multiple, and the multiple friction plates (2) are arranged at any one or more locations between the main shaft (1) and the fixing member (3), between the fixing member (3) and the elastic gasket (4), and between the elastic gasket (4) and the second locking member (5).

10. The backrest slow-down structure of the fitness bench according to any one of claims 2 to 4, characterized in that: The connecting member (6) comprises a rotating shaft (61) and a locking seat (62) connected to each other, the limiting inner hole (63) of the rotating shaft (61) is connected to the first limiting shaft (11) of the main shaft (1), and the locking seat (62) is fixedly connected to the bottom of the seat cushion (7) through the first locking member (9).

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