Seat angle adjustment device and seat

Abstract

The present invention discloses a seat angle adjustment device and a seat, wherein the seat angle adjustment device comprises a base, a connecting part, an elastic rubber pad and a limiting mechanism, wherein the base is hollow and has a first inner connecting surface in an annular shape, and the base is used to connect and support the seat surface of the seat; the connecting part is used to connect the pillar of the seat and the base, and the connecting part is annular and has a second inner connecting surface and an outer connecting surface, and the second inner connecting surface is used to connect the pillar; the elastic rubber pad is annular and is embedded between the first inner connecting surface and the outer connecting surface in a manner that matches the first inner connecting surface and the outer connecting surface; the limiting mechanism is embedded in the elastic rubber pad to reduce the maximum deformation of the elastic rubber pad. The technical solution of the present invention can increase the service life of the seat angle adjustment device.

Description

Technical Field

[0001] This invention relates to the field of seating technology, and in particular to a seat angle adjustment device and a seat. Background Technology

[0002] Chairs are essential for modern work and life, and for most people, sitting occupies the majority of their day. However, the negative effects of prolonged sitting on the human body are increasing, especially when maintaining the same posture for extended periods. Given the inability to change the fact that people need to sit for long periods, alleviating or reducing the harm caused by prolonged sitting has become the focus of chair development. Currently, office chairs generally have height and angle adjustment functions, allowing people to change their sitting posture and alleviate fatigue from sitting in the same position for too long. Methods for adjusting chair height are relatively simple and mature, but how to adjust the chair angle while ensuring chair lifespan and ease of adjustment remains a challenge. Summary of the Invention

[0003] The main objective of this invention is to provide a seat angle adjustment device and a seat, aiming to solve the problem of short service life of current seat angle adjustment devices.

[0004] To achieve the above objectives, the seat angle adjustment device proposed in this invention includes a base, a connecting part, an elastic pad, and a limiting mechanism. The base is hollow and has an annular first inner connecting surface, which is used to connect and support the seat surface of the seat. The connecting part is used to connect the seat support and the base. The connecting part is annular and has a second inner connecting surface and an outer connecting surface. The second inner connecting surface is used to connect the support. The elastic pad is annular and is fitted between the first inner connecting surface and the outer connecting surface in a way that fits the first inner connecting surface and the outer connecting surface. The limiting mechanism is fitted into the elastic pad to reduce the maximum deformation of the elastic pad.

[0005] Preferably, the limiting mechanism is located on the upper part of the elastic pad.

[0006] Preferably, the limiting mechanism is annular, and the normal of the limiting mechanism is parallel to the normal of the elastic pad.

[0007] Preferably, the limiting mechanism includes multiple limiting blocks, which are arranged at the same height on the elastic pad.

[0008] Preferably, the upper outer circumferential surface of the elastic pad is provided with a plurality of grooves arranged at equal heights, and the limiting block is embedded in the grooves.

[0009] Preferably, the plurality of limiting protrusions are divided into left and right protrusions and front and rear protrusions, the protrusion height of the front and rear protrusions is less than the protrusion height of the left and right protrusions; and / or, the distance between adjacent front and rear protrusions is greater than the distance between adjacent left and right protrusions.

[0010] Preferably, the limiting mechanism is integrally formed with the elastic pad.

[0011] Preferably, the upper end face of the elastic pad has an annular groove, and the limiting mechanism is embedded in the annular groove.

[0012] Preferably, the plurality of limiting blocks are evenly distributed on the elastic pad.

[0013] The present invention also proposes a seat having an angle adjustment device, the angle adjustment device comprising a base, a connecting part, an elastic pad, and a limiting mechanism. The base is hollow and has an annular first inner connecting surface, the base being used to connect to and support the seat surface of the seat. The connecting part is used to connect the seat support and the base, the connecting part being annular and having a second inner connecting surface and an outer connecting surface, the second inner connecting surface being used to connect the support. The elastic pad is annular and is fitted between the first inner connecting surface and the outer connecting surface in a manner adapted to fit the first inner connecting surface and the outer connecting surface. The limiting mechanism is fitted into the elastic pad to reduce the maximum deformation of the elastic pad.

[0014] The technical solution of this invention reduces the maximum deformation of the elastic pad by setting an elastic pad between the base and the connecting part and embedding a limiting mechanism in the elastic pad, while ensuring that the elastic pad has a certain thickness. This solves the problem of the short lifespan of the seat angle adjustment device caused by the easy damage of the elastic pad. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a structure of an embodiment of the seat angle adjustment device of the present invention;

[0017] Figure 2 This is a schematic diagram of another embodiment of the seat angle adjustment device of the present invention;

[0018] Figure 3 This is a schematic diagram of the housing structure of an embodiment of the seat angle adjustment device of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the elastic pad in an embodiment of the seat angle adjustment device of the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the elastic pad of another embodiment of the seat angle adjustment device of the present invention;

[0021] Figure 6 This is a schematic diagram of the connection portion of an embodiment of the seat angle adjustment device of the present invention;

[0022] Figures 7 to 9 This is a cross-sectional schematic diagram of the elastic pad of the seat angle adjustment device of the present invention;

[0023] Figure 10 This is a schematic diagram of the limiting mechanism of an embodiment of the seat angle adjustment device of the present invention.

[0024] Explanation of icon numbers:

[0025] label name label name 100 base 300 elastic pad 101 First inner connection surface 301 groove 200 Connection part 302 Annular groove 201 Second inner connection surface 400 Limiting mechanism 202 External connection surface 500 pillar

[0026] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0030] To enhance comfort and reduce the harm caused by prolonged sitting, office chairs typically feature height-adjustable designs, allowing the height to be adjusted and fixed as needed. Chairs with backrests usually employ backrests with elastic recovery mechanisms, dynamically adjusting the backrest angle based on varying pressure points. While the seat surface is generally fixed at a horizontal angle and cannot be adjusted, in some cases, the seat angle may need to be dynamically adjusted to better conform to the pressure points of a person sitting in the chair, thereby increasing comfort.

[0031] This invention proposes a seat angle adjustment device and a seat using the seat angle adjustment device, wherein, please refer to Figures 1 to 9 The seat angle adjustment device includes a base 100, a connecting part 200, an elastic pad 300, and a limiting mechanism 400. The base 100 is hollow and has an annular first inner connecting surface 101. The base 100 is used to connect and support the seat surface of the seat. The connecting part 200 is used to connect the seat support 500 and the base 100. The connecting part 200 is annular and has a second inner connecting surface 201 and an outer connecting surface 202. The second inner connecting surface 201 is used to connect the support 500. The elastic pad 300 is annular and is fitted between the first inner connecting surface 101 and the outer connecting surface 202 in a way that fits the first inner connecting surface 101 and the outer connecting surface 202. The limiting mechanism 400 is fitted into the elastic pad 300 to reduce the maximum deformation of the elastic pad 300.

[0032] The seat tilt angle adjustment should ideally be performed dynamically, requiring an elastic recovery function. The seat angle adjustment device provided by this invention uses an elastic pad 300 as the component providing the elastic recovery force. Under the same force, the thicker the elastic pad 300, the greater its deformation, the greater the change in seat angle, and the easier it is to adjust the seat angle.

[0033] The seat angle adjustment device provided by the present invention is applicable to a single-pillar 500 seat. The connecting part 200 connects to the seat pillar 500, and the base 100 connects to the seat surface. An elastic pad 300 is provided between the rigid base 100 and the rigid connecting part 200. When the seat surface is subjected to an uneven downward force, the seat surface will deflect. The elastic pad 300 will be subjected to lateral pressure due to the deflection of the seat surface, thus undergoing elastic deformation and generating elastic restoring force.

[0034] The elastic pad 300 is preferably made of rubber with a thickness between 5mm and 25mm. After the elastic pad 300 undergoes multiple deformation recovery cycles, especially multiple cycles of large deformation recovery, its elastic deformation capacity weakens, eventually leading to a situation where it cannot recover normally after deformation. To delay the decrease in the elastic deformation capacity of the elastic pad 300, increase the number of elastic deformation cycles, and extend its service life, the present invention provides a limiting mechanism 400 within the elastic pad 300. The limiting mechanism 400 is embedded within the elastic pad 300. When the elastic pad 300 undergoes lateral deformation, the limiting mechanism 400 can reduce the maximum deformation of the elastic pad 300 while maintaining the thickness of the elastic pad 300, thereby reducing damage to the elastic pad 300 and extending its service life.

[0035] When the seat angle changes, the elastic pad 300 undergoes the greatest deformation at its upper and lower ends. Therefore, in this invention, the limiting mechanism 400 is located at the upper or lower part of the elastic pad 300, and the limiting mechanism 400 is a metal part.

[0036] In one specific embodiment, the limiting mechanism 400 is annular, and the normal of the limiting mechanism 400 is parallel to the normal of the elastic pad 300. The annular limiting mechanism 400 can be embedded in the inner side, outer side, or interior of the elastic pad 300. When the limiting mechanism 400 is embedded in the inner or outer side of the elastic pad 300, a corresponding groove 301 is formed on the inner or outer side of the elastic pad 300. When the limiting mechanism 400 is located inside the elastic pad 300, the limiting mechanism 400 and the elastic pad 300 are integrally formed. In other embodiments, the limiting mechanism 400 can also be composed of multiple independent limiting blocks, which are of equal height and evenly distributed on the elastic pad 300, so that the limiting mechanism 400 has the same limiting effect on the seat surface in all directions.

[0037] The limiting mechanism 400 does not always need to maintain the same limiting effect on the seat in all directions. In another preferred embodiment, such as... Figure 10As shown, the limiting mechanism 400 includes multiple toothed protrusions, which are divided into four regions: front, rear, left, and right. The protrusion height d1 of the toothed protrusions in the front and rear regions is less than the protrusion height d2 of the toothed protrusions in the left and right regions. This embodiment allows the maximum tilt angle of the seat in the front-rear direction to be greater than the maximum tilt angle in the left-right direction, and the seat surface to tilt more easily in the front-rear direction. To achieve the same objective, the present invention also proposes another embodiment in which the distance between protrusions in adjacent front-rear regions is greater than the distance between protrusions in adjacent left-right regions.

[0038] In addition, the limiting mechanism 400 can also be provided on the upper or lower end surface of the elastic pad 300. Correspondingly, an annular groove 302 is provided on the upper or lower end surface of the elastic pad 300 for the limiting mechanism 400 to be embedded.

[0039] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A seat angle adjustment device, characterized in that: include: A base, used to connect and support the seat surface of the chair; the base is hollow and has a first inner connecting surface in an annular shape; A connecting portion, used to connect the pillar of the seat and the base; The connecting portion is annular and has a second inner connecting surface and an outer connecting surface, wherein the second inner connecting surface is used to connect the support pillar; An elastic rubber pad, which is annular and embedded between the first inner connecting surface and the outer connecting surface so as to be compatible with the first inner connecting surface and the outer connecting surface; A limiting mechanism, embedded in the elastic rubber pad, to reduce the maximum deformation of the elastic rubber pad; The limiting mechanism is arranged on the upper part or the lower part of the elastic rubber pad; The limiting mechanism is in the shape of a circular ring, and the normal of the limiting mechanism is parallel to the normal of the elastic rubber pad. The upper end face or the lower end face of the elastic rubber pad is provided with an annular groove, and the limiting mechanism is embedded in the annular groove; or, the limiting mechanism is in the shape of a circular ring, and the limiting mechanism is embedded inside the elastic rubber pad, and the limiting mechanism and the elastic rubber pad are integrally formed.

2. A seat, characterized in that: It comprises the seat angle adjustment device as claimed in claim 1.

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