WO2020014963A1

WO2020014963A1 - Seat angle adjustment device

Info

Publication number: WO2020014963A1
Application number: PCT/CN2018/096450
Authority: WO
Inventors: 李矛
Original assignee: 深圳市悠睿科技有限公司
Priority date: 2018-07-19
Filing date: 2018-07-20
Publication date: 2020-01-23
Also published as: CN108634662A

Abstract

A seat angle adjustment device, comprising a housing (1) connected to a seating part of a seat, and an inner shaft (6) provided in the housing (1), an elastic buffering body (5) is provided between the housing (1) and the inner shaft (6), the elastic buffering body (5) wraps around the inner shaft (6) and is in contact with the inner side surface (11) of the housing (1), and the inner shaft (6) of the seat is connected to support legs of the seat. The distance between the upper end surface of the inner shaft (6) and the lower end surface of the elastic buffering body (5) is greater than the thickness of the elastic buffering body (5), and a movable support part (9) adjustable in position is provided in a space located above the upper end surface of the elastic buffering body (5) and between the inner side surface (11) of the housing and the outer side surface (61) of the inner shaft.

Description

Seat angle adjusting device

Technical field

The invention relates to the field of seats, in particular to a seat angle adjusting device for a seat.

Background technique

Whether they are at work or at rest, they spend most of their time in chairs. Studies in modern medicine have shown that sedentary can have a negative impact on health, so it is recommended not to sit for long periods of time. However, due to the need for work, sedentary is required. So how to reduce the negative impact of sedentary on the body is a problem that seat manufacturers need to address. A problem. Most of the existing general-purpose seats can only be adjusted in height, and the seats can only be adjusted in a certain angle in a plane, that is, can only be adjusted in one direction, and dynamic sitting posture cannot be adjusted. If you want to adjust the dynamic sitting position, you need to be able to adjust the angle in all directions. In response to this need to adjust the angle in various directions, some institutions have appeared, but these institutions have problems such as complex structures and high costs. There is an urgent need for a seat angle adjustment device with a simple structure and capable of adjusting the tilt angle in various directions.

Summary of the invention

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a seat angle adjusting device with a simple structure, low cost, and capable of adjusting a multi-directional tilt angle.

To solve the above technical problems, the present invention adopts the following technical solutions:

A seat angle adjusting device includes a housing connected to a seat of a seat, an inner shaft provided in the housing, and an elastic buffer provided between the housing and the inner shaft. Body, the elastic buffer body covers the inner shaft and simultaneously contacts the inner side surface of the housing, and the inner shaft of the seat is connected with the support feet of the seat.

As a first improvement of the present invention, a distance from an upper end surface of the inner shaft to a lower end surface of the elastic buffer body is greater than a thickness of the elastic buffer body, and the upper end surface of the elastic buffer body is above and simultaneously located in the shell. A movable support portion with adjustable position is provided in a space between the inner side surface of the body and the outer side surface of the inner shaft. The movable support portion includes an initial position before adjustment and an end position after adjustment, and the movable support portion is at the end position. At this time, the movable supporting portion is rigidly engaged between the outer side surface of the inner shaft and the inner side surface of the housing.

As a further improvement of the present invention, the elastic buffer body is an elastic bushing, and the housing, the inner shaft, and the elastic bushing are arranged coaxially.

As a further improvement of the present invention, the movable supporting portion is a locking portion that can be moved up and down, and it is located at an initial position before a descending movement. At this time, the outer side surface of the locking portion is adjacent to the inner side surface of the housing. The inner side surface of the inner hole of the locking portion is not in contact with the outer side surface of the inner shaft; after the lowering movement, it is in the end position, at this time, the outer side surface of the locking portion contacts the inner side surface of the housing, and the locking The inner side surface of the inner hole of the part contacts the outer side surface of the inner shaft, thereby restricting the inner shaft from swinging with respect to the housing.

As a still further improvement of the present invention, it further comprises an inclined lock lever protruding out of the casing, one end of the inclined lock lever projects out of the casing, and the other end is hinged with the upper end surface of the locking portion.

As a further improvement 2 of the present invention, a stopper connected to the housing is further included, and the movable support portion is a wedge. In an initial position, a side of the stopper close to the inner shaft and the inner shaft The outer sides of the inner shaft are not in contact with each other. In the end position, the wedge moves toward the inner shaft and contacts the outer side of the inner shaft, thereby restricting the swing of the inner shaft relative to the housing. .

As a still further improvement of the present invention, it further comprises an inclined lock lever protruding out of the housing, and when the inclined lock lever moves, a force for pushing the wedge block to move it can be applied.

As a second improvement of the present invention, the elastic buffer body is fixedly connected to the inner shaft and the casing at the same time.

As a further improvement of the present invention, it further includes a cylinder and a height adjustment rod protruding outside the casing, the cylinder extends into the inner shaft, and one end of the height adjustment rod extends out of the casing, and another One end is located above the cylinder.

As a further improvement of the present invention, it further includes a pressure plate connected to an end of the height adjustment rod located in the housing, and a middle extending through the inner shaft is further provided between the lower end surface of the pressure plate and the cylinder. The area of the pressure plate covers the maximum movement range of the top end of the middle piece.

The beneficial effect of the present invention is that through the simple structure described above, the elastic buffer body is used to provide an elastic space for the tilting movement of the inner shaft and the housing, and a 360-degree multi-directional tilt is realized. The implementation of this structure is simple and reliable, and at the same time, the cost of raw materials and processing costs are greatly reduced, so that this device can be more easily promoted and applied. At the same time, by adding a movable support, when the multi-directional angle adjustment is needed, the movable support is moved by turning the tilt lock lever, thereby ensuring that the inner shaft has a space to move with respect to the housing, thereby enabling multi-directional tilt Adjustment. When the user does not want to tilt in multiple directions, the movable support is moved by turning the tilt lock lever, so that a rigid support structure is formed between the inner shaft and the housing, thereby limiting the swing of the inner shaft relative to the housing. In this way, tilt adjustment cannot be performed, and the user can perform normal use. Finally, this structure compactly integrates the traditional seat height adjustment system into the seat angle adjustment device, allowing the seat to achieve height adjustment and multi-directional tilt adjustment at the same time, giving users a variety of adjustment options.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of Embodiment 1 of the present invention.

FIG. 2 is a schematic structural diagram of Embodiment 1 of the present invention.

FIG. 3 is a perspective view of Embodiment 2 of the present invention.

FIG. 4 is a schematic structural diagram of Embodiment 2 of the present invention.

FIG. 5 is a schematic partial structural diagram of Embodiment 2 of the present invention.

detailed description

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

It should be noted that when a component is called "installed on", "fixed on" or "disposed on" another component, it may be directly on another component or a centered component may exist at the same time. When a component is referred to as being "connected to" another component, it may be directly connected to another component or there may be centered components.

It should also be noted that the terms such as left, right, up, and down in the embodiments of the present invention are merely relative concepts or reference to the normal use status of the product, and should not be considered as restrictive. .

As shown in FIGS. 1 and 2, the first embodiment of the present invention discloses a seat angle adjusting device, which includes a housing 1 connected to a seat portion of a seat, and an inner shaft 6 provided in the housing 1. An elastic buffer body 5 is provided between the housing 1 and the inner shaft 6. The elastic buffer body 5 covers the inner shaft 6 and simultaneously contacts the inner side surface 11 of the housing 1. The inner shaft 6 of the seat is connected to the support feet of the seat. The distance from the upper end surface of the inner shaft 6 to the lower end surface of the elastic buffer body 5 is greater than the thickness of the elastic buffer body 5. The upper end surface of the elastic buffer body 5 is above and simultaneously located on the housing 1. The space between the inner side surface 11 and the outer side surface 61 of the inner shaft 6 is provided with an adjustable movable support portion. The movable support portion includes an initial position before adjustment and an end position after adjustment, and the movable support portion is at the end. When in position, the movable support portion is rigidly engaged between the outer side surface 61 of the inner shaft 6 and the inner side surface 11 of the housing 1, and the movable support portion may be connected to the inner side surface of the housing 1 11 is in direct contact, or is in direct contact with other components that have a connection relationship with the inner side 11 of the casing 1. Similarly, the movable support portion may be in direct contact with the outer side surface 61 of the inner shaft 6, or may be in direct contact with other components that have been connected to the inner side surface 61 of the inner shaft 6. The elastic buffer body 5 is an elastic bushing, and the casing 1, the inner shaft 6, and the elastic bushing are coaxially disposed. The elastic bush is fixedly connected to the inner shaft and the casing at the same time.

The movable supporting portion is a locking portion 9 that can move up and down, and it is located at the initial position before the lowering movement. At this time, the outer side surface 91 of the locking portion 9 is adjacent to the inner side surface 11 of the housing 1, and the locking portion 9 The inner side surface 921 of the inner hole 92 is not in contact with the outer side surface 61 of the inner shaft 6; it is in the final position after the lowering movement, at this time the outer side 91 of the locking portion 9 contacts the inner side surface of the housing 1 11. The inner side surface 921 of the inner hole 92 of the locking portion 9 contacts the outer side surface 61 of the inner shaft 6, so as to limit the swing of the inner shaft 6 relative to the housing 1. One end of the inclined lock lever 4 projects out of the casing 1, and the other end is hinged to the upper end surface of the locking portion 9. When the portion of the tilt lock lever 4 located outside the other casing 1 is lifted, the tilt lock lever 4 applies downward pressure to the lock portion 9 to move it downward, and the lock portion 9 When it moves to the end position, the left and right sides of the housing 1 and the outer surface 61 of the inner shaft are in contact with each other. At this time, the locking portion 9 restricts the inner shaft 6 relative to the housing 1 Swing to achieve the tilt adjustment lock function. When the portion of the tilt lock lever 4 located outside the housing 1 is pressed down, the tilt lock lever 4 applies an upward lifting force to the lock portion 9 to move it upward, and the lock portion 9 moves to the initial position. In the position, the right side of the locking portion 9 is not in contact with the outer side surface 61 of the inner shaft. At this time, the locking portion 9 cannot restrict the swing of the inner shaft 6 relative to the housing 1, thereby achieving the tilt adjustment unlocking function. .

In order to achieve height adjustment at the same time, the seat angle adjustment device further includes a cylinder 3 provided in the inner shaft 6 and a height adjustment rod 2 protruding outside the housing 1, and one end of the height adjustment rod 2 extends out of Outside the housing 1, the other end is located above the cylinder 3. A pressure plate 7 is connected to one end of the height adjustment rod 2 located in the housing 1, and an intermediate piece 8 penetrating the inner shaft 6 is further provided between the lower end surface of the pressure plate 7 and the cylinder 3. The area of the pressing plate 7 covers the maximum moving range of the top end of the middle piece 8. In this way, no matter what angle the intermediate piece 8 swings with the inner shaft, the pressing plate 7 can be pressed to the top of the intermediate piece 8 to achieve smooth height adjustment.

As shown in FIGS. 3 and 4, the second embodiment of the present invention is different from the first embodiment in that the movable support portion is a wedge 12 and a stopper 21 connected to the housing 1 is also provided. In the initial position, there is no contact between the side of the stopper 21 near the inner shaft 6 and the outer side surface 61 of the inner shaft 6. In the final position, the wedge block 12 faces the inner shaft 6. It moves and comes into contact with the outer side surface 61 of the inner shaft 6 so as to limit the swing of the inner shaft 6 with respect to the housing 1. Similarly, the inclined lock lever 10 can apply a force to the wedge block 12 to move the wedge block 12 from the initial position to the end position, or return from the end position to the initial position. Here, the stopper 21 can be rotated about the pivot axis 13 so that the wedge 12 can be moved from the initial position to the end position or returned from the end position to the initial position. The two stoppers 21 can be individually rotated around the pivot axis 13 or can be simultaneously Pivot.

It can be understood that for a person of ordinary skill in the art, equivalent replacements or changes can be made according to the technical solution of the present invention and its inventive concept, and all these changes or replacements should fall within the protection scope of the claims attached to the present invention.

Claims

A seat angle adjusting device is characterized by comprising a housing (1) connected to a seating portion of a seat, and an inner shaft (6) provided in the housing (1). 1) An elastic buffer body (5) is arranged between the inner shaft (6) and the elastic buffer body (5) covers the inner shaft (6) and simultaneously contacts the inside of the housing (1). On the side (11), the inner shaft (6) of the seat is connected with the support feet of the seat.
The seat angle adjusting device according to claim 1, wherein a distance from an upper end surface of the inner shaft (6) to a lower end surface of the elastic buffer body (5) is greater than the elastic buffer body (5) The thickness above the upper end surface of the elastic buffer body (5) and at the same time the space between the inner surface (11) of the housing (1) and the outer surface (61) of the inner shaft (6) A movable support portion with adjustable position is provided therein, and the movable support portion includes an initial position before adjustment and an end position after adjustment. When the movable support portion is at the end position, the movable support portion is rigidly engaged with the inner shaft ( 6) between the outer side surface (61) and the inner side surface (11) of the casing (1).
The seat angle adjusting device according to claim 2, wherein the elastic buffer body (5) is an elastic bush, and the housing (1), the inner shaft (6), and the elastic bush are coaxially disposed. .
The seat angle adjusting device according to claim 3, characterized in that: the movable supporting portion is a locking portion (9) that can be moved up and down, and it is located at an initial position before the lowering movement, and at this time, the locking portion (9 ) Is adjacent to the inner surface (11) of the housing (1), the inner surface (921) of the inner hole (92) of the locking portion (9) and the inner shaft (6) The outer side (61) is not in contact; it is in the end position after the descending movement, at this time the outer side (91) of the locking portion (9) contacts the inner side (11) of the housing (1), and the lock The inner side surface (921) of the inner hole (92) of the part (9) contacts the outer side surface (61) of the inner shaft (6), thereby restricting the inner shaft (6) relative to the housing (1). swing.
The seat angle adjusting device according to claim 4, further comprising an inclined lock lever (4) protruding out of the housing (1), and one end of the inclined lock lever (4) extends out of the housing. The other end of the casing (1) is hinged to the upper end surface of the locking portion (9).
The seat angle adjusting device according to claim 3, further comprising a stopper (21) connected to the housing (1), and the movable supporting portion is a wedge (12), in an initial position When the side of the stopper (21) near the inner shaft (6) and the outer side (61) of the inner shaft (6) are not in contact, in the final position, the wedge (12) ) Moves toward the inner shaft (6) and contacts the outer side surface (61) of the inner shaft (6), thereby restricting the inner shaft (6) from swinging relative to the housing (1).
The seat angle adjusting device according to claim 6, further comprising a tilt lock lever (10) protruding out of the housing (1), which can be given when the tilt lock lever (10) is moved. The wedge (12) exerts a force pushing it to move.
The seat angle adjusting device according to any one of claims 1 to 7, characterized in that the elastic buffer body (5) is simultaneously with the inner shaft (6) and the housing (1) Fixed connection.
The seat angle adjusting device according to claim 8, further comprising a cylinder (3) and a height adjustment rod (2) protruding outside the housing (1), the cylinder extending into the In the inner shaft (6), one end of the height adjustment rod (2) projects out of the housing (1), and the other end is located above the air cylinder (3).
The seat angle adjusting device according to claim 9, further comprising a pressure plate (7) connected to an end of the height adjustment lever (2) located in the housing (1), on the pressure plate (7) An intermediate piece (8) penetrating the inner shaft (6) is further provided between the lower end surface of the cylinder and the cylinder (3), and the area of the pressure plate (7) covers the top end of the intermediate piece (8). The maximum range of movement.