Chair with follow-up chair back

Abstract

The utility model discloses a chair back follow-up chair and relates to a chair back follow-up chair which comprises a seat and a chair back, a base plate is arranged at the bottom of the seat, the base plate extends outwards to be provided with a supporting seat, and the chair back can generate relative rotation through a follow-up mechanism arranged on the supporting seat. The follow-up mechanism comprises an upper connecting rod set and a lower connecting rod set which are rotationally connected to the upper portion and the lower portion of the supporting seat, the upper connecting rod set and the lower connecting rod set are rotationally connected with an upper supporting lug and a lower supporting lug which are arranged on the chair back respectively, and an air rod in transmission connection with the upper supporting lug is arranged on the supporting seat. And the chair back can effectively support the waist part.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, in particular to a chair with a movable backrest. Background Art

[0002] Currently, the chairs on the market do not provide good support for the waist, especially when people sit to work, the waist is still a certain distance away from the chair back, so most people who sit for long periods of time are prone to lumbar problems. Utility Model Content

[0003] (1) Technical issues to be resolved

[0004] In order to overcome the shortcomings of the existing technology, a chair with a movable backrest is proposed, which can provide effective support for the waist area.

[0005] (2) Technical solution

[0006] The present invention is achieved through the following technical solution: the present invention proposes a chair with a movable backrest, comprising a seat and a chair backrest, wherein a chassis is provided at the bottom of the seat, a support seat is provided outwardly extending from the chassis, and the chair backrest can generate relative rotation through a movable mechanism provided on the support seat, and the movable mechanism comprises an upper connecting rod group and a lower connecting rod group rotatably connected to the upper and lower sides of the support seat, the upper connecting rod group and the lower connecting rod group are respectively rotatably connected to the upper supporting ears and the lower supporting ears provided on the chair backrest, and a gas rod is provided on the support seat that is transmission-connected to the upper supporting ears.

[0007] Furthermore, the lower supporting ear and the lower connecting rod assembly are connected via an angle adjuster.

[0008] Furthermore, the angle adjuster is a stepped adjuster, which includes four adjustable angle gears.

[0009] Furthermore, the chassis is connected to the support seat through a curved support.

[0010] Furthermore, movable wheels are provided on the chair legs below the seat.

[0011] (3) Beneficial effects

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The utility model mentions a chair with a movable backrest, which can adjust the angle and support strength of the chair back according to the needs of the human waist. The backrest of the chair back can move forward, allowing the human waist to lean completely against the chair back, thereby achieving the effect of supporting the waist, allowing people to get effective support for the waist when sitting for a long time, and the waist can be completely relaxed under the effective support. No matter how long you sit in the state of effective support and complete relaxation, the waist will not be pathologically deformed, and there will be no lumbar protrusion. In addition, when the human waist and back lean back with force, the backrest of the chair back will move forward. After moving to the required waist support position and stopping, the chair back can automatically lock the gear. The human waist will now get strong support, allowing the waist to be completely relaxed and relieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the utility model.

[0015] Figure 2 yes Figure 1 Enlarged schematic diagram of point A in the middle.

[0016] 1-seat; 2-backrest; 3-support seat; 4-follow-up mechanism; 5-upper support ear; 6-lower support ear; 7-gas rod; 8-angle adjuster; 9-bend support; 41-upper connecting rod group; 42-lower connecting rod group. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, 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.

[0018] like Figure 1-Figure 2 The shown chair has a movable backrest, and the chair legs are provided with moving wheels for easy movement. A chassis is provided at the bottom of the seat 1, and a curved support 9 is connected to the chassis. The chassis extends outward through the curved support 9, and a support seat 3 is connected to the end of the curved support 9. The support seat 3 is provided with a movable mechanism 4 that allows the chair back 2 to rotate. The upper and lower ends of the support seat 3 are respectively provided with an upper connecting rod group 41 and a lower connecting rod group 42. The back of the chair back 2 is provided with an upper supporting ear 5 and a lower supporting ear 6 that are rotatably connected to the upper connecting rod group 41 and the lower connecting rod group 42 respectively. The upper connecting rod group 41 and the lower connecting rod group 42 each include two sub-connecting rods, and the two sub-connecting rods are respectively provided on both sides of the support seat 3.

[0019] In addition, the lower support ear 6 and the lower connecting rod group 42 are connected through the angle adjuster 8. The angle adjuster 8 is a stepped adjuster, including 4 different gears to meet different angle requirements. The angle adjuster 8 is an existing design, and the specific structure is not described in detail. A gas rod 7 is provided on the support seat 3, which is transmission-connected to the upper support ear 5. The gas rod 7 can play a role of resistance support for the human body backrest. When the human body leaves the seat 1 and the backrest is rotated to the 4th gear, the rebound effect of the gas rod 7 can also realize the reset function of the backrest 2.

[0020] The utility model mentions a chair with a movable backrest. When in use, the human body sits on the seat 1 and leans back, and then the chair back 2 rotates. At this time, the lower end of the chair back 2 moves forward to press against the human waist. After completely pressing against the waist, it is locked through the angle adjustment machine 8 to achieve a perfect fit for the human waist, alleviating the problem of no support for the waist. When the human body leaves, the chair back moves forward to the unlocking position, and the chair back 2 returns to its initial state under the action of the gas rod 7.

[0021] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Any modifications and improvements to the technical solution of the present invention made by a person of ordinary skill in the art without departing from the design concept of the present invention shall fall within the scope of protection of the present invention. The technical content sought to be protected by the present invention is fully set forth in the claims.

Claims

1. A chair with a movable backrest, comprising a seat (1) and a chair back (2), characterized in that: The seat (1) is provided with a chassis at the bottom, and a support seat (3) is provided on the chassis extending outward. The chair back (2) can generate relative rotation through a follower mechanism (4) provided on the support seat (3). The follower mechanism (4) includes an upper connecting rod group (41) and a lower connecting rod group (42) rotatably connected to the upper and lower sides of the support seat (3). The upper connecting rod group (41) and the lower connecting rod group (42) are respectively rotatably connected to the upper supporting ear (5) and the lower supporting ear (6) provided on the chair back (2). The support seat (3) is provided with a gas rod (7) that is transmission-connected to the upper supporting ear (5).

2. The backrest follower chair according to claim 1, characterized in that: The lower support ear (6) and the lower connecting rod assembly (42) are connected via an angle adjuster (8).

3. The backrest follower chair according to claim 2, characterized in that: The angle adjuster (8) is a stepped adjuster, which includes four adjustable angle gears.

4. The backrest follower chair according to claim 1, characterized in that: The chassis is connected to the support seat (3) via a curved support (9).

5. The backrest follower chair according to claim 1, characterized in that: The chair legs below the seat (1) are provided with movable wheels.

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