CN108143159B - Chair back waist rest linkage mechanism - Google Patents
Chair back waist rest linkage mechanism Download PDFInfo
- Publication number
- CN108143159B CN108143159B CN201810120743.0A CN201810120743A CN108143159B CN 108143159 B CN108143159 B CN 108143159B CN 201810120743 A CN201810120743 A CN 201810120743A CN 108143159 B CN108143159 B CN 108143159B
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- CN
- China
- Prior art keywords
- waist
- support
- backrest
- linkage
- rest
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The application discloses a chair back and waist rest linkage mechanism which comprises a back rest, a waist rest and a linkage assembly, wherein the back rest and the waist rest are connected to a chair through the linkage assembly, so that the waist rest moves forwards through the driving of the linkage assembly when the back rest leans backwards, and is bent to form a certain angle relative to the back rest. The chair back lumbar support linkage mechanism is adjusted in linkage with the backrest when in use, can provide lumbar support for a user, has a simple structure, is convenient to use and effectively improves the comfort of bearing.
Description
Technical Field
The application relates to a seat, in particular to a chair back lumbar support linkage mechanism.
Background
Chairs are widely used by families or office places, and in order to ensure the comfort of the use of the chairs, the existing office chairs generally have the function of adjusting the backrest, and when a person sits down and leans against the backrest, the backrest can change a certain angle and deform. Although the chair can meet the back support requirements of the human body to a certain extent, due to the shape and structure of the back and the waist of the human body, when the back is supported comfortably, a certain gap is often generated between the waist and the back, so that the waist can not always achieve the purpose of supporting comfortably, and when the waist can not support, discomfort such as waist soreness and fatigue can be generated in a short time, so that the comfort of the conventional chair needs to be further improved.
Disclosure of Invention
The application aims to provide the chair back lumbar support linkage mechanism which is adjusted in linkage with the backrest when in use, provides lumbar support for a user, has a simple structure, is convenient to use and improves comfort.
In order to achieve the above purpose, the chair back lumbar support linkage mechanism provided by the application comprises a back rest, a lumbar support and a linkage assembly, wherein the back rest and the lumbar support are connected to a chair through the linkage assembly, so that the lumbar support moves forwards through the driving of the linkage assembly when the back rest leans backwards, and is bent to form a certain angle relative to the back rest.
Compared with the prior art, the application has the advantages that the waist rest is arranged at the lower end of the backrest, so that the waist rest and the backrest are in an integrated structure, the connecting part is arranged at the connecting part of the backrest and the waist rest, and the waist rest and the waist support are slidably connected, so that the backrest, the waist rest, the back support and the waist support form a link mechanism, and the characteristic that the connecting part can be bent and deformed is utilized, therefore, when the back of a human body is supported on the backrest, the connecting part is bent and deformed by utilizing the linkage of the link mechanism, so that the waist rest protrudes out of the backrest, is closer to the waist of the human body, provides a supporting force for the waist of the human body, and greatly improves the comfort of the waist; the whole mechanism is deformed simultaneously along with the bearing of the human body, does not need manual operation and adjustment, and has simple structure and convenient use.
Preferably, the linkage assembly comprises a back support and a waist support, wherein the lower end of the back support is pivoted with the seat, the upper end of the back support is fixedly connected with the backrest, the waist support is slidably connected with the upper end of the waist support, and the waist support is fixedly connected with the seat.
Specifically, the backrest and the lumbar support are in an integrated structure, and a connecting part capable of bending and deforming is arranged at the connecting part of the backrest and the lumbar support.
Specifically, one of the waist rest and the waist support is provided with a chute, and the other is provided with a pin shaft which is slidingly inserted in the chute. Through the cooperation of the sliding groove and the pin shaft, the waist rest and the waist support can be connected in a sliding manner, so that the waist rest swings simultaneously during the back rest action, and the linkage purpose is realized.
Specifically, the back side of the waist rest is convexly provided with a protruding block, the protruding block is provided with the sliding groove, and the upper end of the waist support is provided with the pin shaft.
Specifically, the back support and/or the waist support are in an L-shaped structure.
In particular, the back support is located on a rear side of the back and the lumbar support is located in the middle of the rear side of the lumbar support.
Specifically, the connecting portion is provided with a plurality of grooves which are transversely arranged. By providing the grooves, the connecting portion is formed into a thin plate-like structure having elasticity, so that the connecting portion can be deformed into a thin plate.
Specifically, a tooth-like structure is formed between two adjacent grooves.
Drawings
Fig. 1 is a schematic view of the structure of the chair of the present application.
Figure 2 is a side cross-sectional view of the lumbar support linkage of the chair back of the present application when not in use.
Figure 3 is a side cross-sectional view of the lumbar support linkage of the chair back of the present application in use.
Fig. 4 is an enlarged view of a portion B in fig. 3.
Detailed Description
In order to describe the technical content, the constructional features and the effects achieved by the present application in detail, the following description is made with reference to the embodiments in conjunction with the accompanying drawings.
As shown in fig. 1 and 2, the chair back lumbar support linkage mechanism 100 of the present application comprises a back 1, a lumbar support 2 and a linkage assembly, wherein the linkage assembly comprises a back support 3 and a lumbar support 4, the back support 3 and the lumbar support 4 are both in an L-shaped structure, and the upper part of the back support 3 is in a plate-shaped structure and is positioned at the rear side of the back and is fixedly connected with the back 1; the lower part of the back support 3 is in a two-leg structure 3a and is positioned at two sides below the backrest 1, and extends to the lower part of the seat 200 to be pivoted with the seat 200, so as to form a pivot point A. The lumbar support 2 is located below the back rest 1 and between the two leg structures 3a of the back support 3. The backrest 1 and the lumbar support 2 are of an integrated structure, and a connecting part 5 which can be bent and deformed is arranged at the connecting part of the backrest 1 and the lumbar support 2; the middle part of the lumbar support 2 is slidably connected with the upper end of the lumbar support 4, the lumbar support 4 is arranged in the middle of the rear side of the lumbar support 2, and the lower end of the lumbar support 4 is fixedly connected with the seat 200.
As shown in fig. 4, the connecting portion 5 is provided with a plurality of grooves 51 arranged transversely. By providing the groove 51, the connecting portion 5 is formed into a thin plate-like structure having elasticity, so that the connecting portion 5 can be deformed into a thin plate. A tooth-like structure 52 is formed between two adjacent grooves 5. Of course, the connecting portion 5 may be a plastic member having elasticity or being repeatedly bendable, and the connecting portion may be deformed and bent when in use, and may be reset when not in use, and may not be broken, and the structure is not limited thereto.
As shown in fig. 2 and 3, a protruding block 22 is provided protruding from the middle of the back side of the lumbar support 2, a chute 21 is provided on the protruding block 22, and the pin 41 is provided at the upper end of the lumbar support 4. The pin 41 is slidably inserted into the chute 21. The sliding groove 21 and the pin 41 are engaged with each other, so that the lumbar support 2 and the lumbar support 4 can be slidably connected to each other, and the lumbar support 2 can be simultaneously swung when the back 1 is operated, thereby achieving the purpose of linkage.
Referring to fig. 3, when a user sits on the seat 200 and the back is supported by the backrest 1, the backrest 1 swings backward, the back support 3 swings counterclockwise, meanwhile, the lower end of the backrest 1 drives the lumbar support 2, at this time, the lumbar support 2 swings through the sliding fit of the sliding groove 21 and the pin shaft 41, finally, the pin shaft 41 slides from one end to the other end of the sliding groove 21, the connecting portion 5 deforms elastically and bends, so that the entirety of the lumbar support 2 protrudes toward the front side of the backrest 1 and is attached to the waist of the user, at this time, the backrest 1, the lumbar support 2, the back support 3 and the lumbar support 4 reach a stable state with each other, the backrest 1 provides a supporting force for the back of the user through the back support 3, and the lumbar support 2 provides a supporting force for the waist of the user, thereby alleviating discomfort of the waist.
Compared with the prior art, the application has the advantages that the waist rest 2 is arranged at the lower end of the backrest 1, the waist rest 2 and the backrest 1 are in an integrated structure, the connecting part 5 is arranged at the connecting part of the backrest 1 and the waist rest 2, and the waist rest 2 and the waist support 4 are slidably connected, so that the backrest 1, the waist rest 2, the back support 3 and the waist support 4 form a link mechanism, and the characteristic that the connecting part 5 can be elastically bent and deformed is utilized, therefore, when the human back is supported on the backrest 1, the connecting part 5 is bent and deformed by the linkage of the link mechanism, and the waist rest 2 protrudes out of the backrest 1, thereby being closer to the human waist, providing a supporting force for the human waist, and greatly improving the comfort of the waist; the whole mechanism enables the backrest 1 and the lumbar support 2 to deform simultaneously along with the bearing of a human body, and the manual operation and adjustment are not needed, so that the structure is simple, and the use is convenient.
In addition, the connection between the backrest 1 and the lumbar support 2 may be formed in other manners, for example, the backrest 1 and the lumbar support 2 may be rotatably connected or connected by silicone, and the backrest 2 may be protruded forward relative to the backrest 1 and support the lumbar by bending the backrest relative to each other by the linkage assembly.
The foregoing disclosure is merely illustrative of the principles of the present application, and thus, it is intended that the scope of the application be limited thereto and not by this disclosure, but by the claims appended hereto.
Claims (7)
1. The utility model provides a back of chair waist leans on link which characterized in that: the backrest and the lumbar support are connected to the seat through the linkage assembly, so that the lumbar support moves forwards through the driving of the linkage assembly when the backrest leans backwards, and is bent to form a certain angle relative to the backrest; the linkage assembly comprises a back support and a waist support, the lower end of the back support is pivoted with the seat, the upper end of the back support is fixedly connected with the backrest, the waist support is slidably connected with the upper end of the waist support, and the waist support is fixedly connected with the seat; the backrest and the waist rest are of an integrated structure, and a connecting part capable of bending and deforming is arranged at the connecting part of the backrest and the waist rest.
2. The chair back lumbar linkage of claim 1 wherein: one of the waist rest and the waist support is provided with a chute, the other is provided with a pin shaft, and the pin shaft is slidingly inserted in the chute.
3. The chair back lumbar linkage of claim 2 wherein: the back side of the waist rest is provided with a protruding block in a protruding mode, the protruding block is provided with a sliding groove, and the upper end of the waist support is provided with a pin shaft.
4. The chair back lumbar linkage of claim 1 wherein: the back support and/or the waist support are in an L-shaped structure.
5. The chair back lumbar linkage of claim 1 wherein: the back support is positioned at the rear side of the back, and the waist support is positioned in the middle of the rear side of the waist rest.
6. The chair back lumbar linkage of claim 1 wherein: the connecting part is provided with a plurality of grooves which are transversely arranged.
7. The chair back lumbar linkage of claim 6 wherein: a tooth-shaped structure is formed between two adjacent grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120743.0A CN108143159B (en) | 2018-02-07 | 2018-02-07 | Chair back waist rest linkage mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120743.0A CN108143159B (en) | 2018-02-07 | 2018-02-07 | Chair back waist rest linkage mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108143159A CN108143159A (en) | 2018-06-12 |
| CN108143159B true CN108143159B (en) | 2023-08-29 |
Family
ID=62456972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810120743.0A Active CN108143159B (en) | 2018-02-07 | 2018-02-07 | Chair back waist rest linkage mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108143159B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111685524A (en) * | 2020-07-29 | 2020-09-22 | 榆逗(上海)智能科技有限公司 | Fine adjustment mechanism for chair |
| CN215776739U (en) * | 2021-05-20 | 2022-02-11 | 广东联友办公家具有限公司 | Waist pillow supporting force adjusting structure and seat |
| CN113180953B (en) * | 2021-06-15 | 2022-09-13 | 宁波欣雷医疗设备有限公司 | Back lifting mechanism of nursing bed |
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| US20120193959A1 (en) * | 2011-02-01 | 2012-08-02 | Ching-Ming Chen | Automatic waistrest adjusting device for office chairs |
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| CN108143159A (en) | 2018-06-12 |
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