CN113951660A - Armrest linkage device of seat - Google Patents
Armrest linkage device of seat Download PDFInfo
- Publication number
- CN113951660A CN113951660A CN202111320776.8A CN202111320776A CN113951660A CN 113951660 A CN113951660 A CN 113951660A CN 202111320776 A CN202111320776 A CN 202111320776A CN 113951660 A CN113951660 A CN 113951660A
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- CN
- China
- Prior art keywords
- armrest
- rotating shaft
- seat
- boss
- swing arm
- Prior art date
- 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.)
- Granted
Links
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 239000011324 bead Substances 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims 6
- 230000003068 static effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Images
Classifications
-
- 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
- A47C7/54—Supports for the arms
- A47C7/541—Supports for the arms of adjustable type
-
- 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
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- Special Chairs (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention discloses an armrest linkage device of a chair, which comprises a chair back inner support and an armrest linkage component, wherein the armrest linkage component comprises an armrest, an armrest rotating shaft, a swing arm and a swing arm rotating shaft, the swing arm and the first shaft sleeve are connected in the swing arm rotating shaft, the swing arm is connected with the linkage rod, the second shaft sleeve is connected in the handrail rotating shaft, one side of the first shaft sleeve is a first matching surface, a first positioning block and a first boss are arranged on the first matching surface, one side of the second shaft sleeve is a second matching surface, a second positioning block and a second boss are arranged on the second matching surface, the first matching surface and the second boss are arranged relatively, the first boss and the second matching surface are arranged relatively, a clamping groove is formed in the second fixing base, a clamping block is arranged on the handrail rotating shaft, and the clamping block and the clamping groove are arranged relatively. The handrail linkage device is convenient and flexible to use, compact and concise as a whole and high in strength.
Description
Technical Field
The invention relates to the technical field of seats, in particular to an armrest linkage device of a seat.
Background
The seat on the existing market is generally provided with the handrail, and the connection of the existing handrail and the seat body has two modes: 1. the armrest rotating shaft and the swing arm are completely fixed; 2. the tail end of the handrail is provided with an additional supporting linkage rod. The first type of armrests cannot be freely turned and can only move along with the rotation of the chair back, and for some obese people, the people cannot sit down due to small space between the armrests, the armrests are not needed in some application scenes, and cannot be stored, so that the normal use is influenced; although the second armrest can realize the linkage of the armrests, the linkage rod is arranged at the tail ends of the armrests, the overall design feeling is damaged, and the overall structure volume of the seat is relatively large.
Disclosure of Invention
In order to solve the problems, the technical scheme provided by the invention is as follows:
an armrest linkage device of a chair comprises a chair back inner support and an armrest linkage component, wherein the armrest linkage component comprises an armrest, an armrest rotating shaft, a swing arm rotating shaft, a linkage rod, a first fixing seat, a second fixing seat, a first shaft sleeve and a second shaft sleeve, the first fixing seat and the second fixing seat are fixed on the chair back inner support, the swing arm rotating shaft is connected to the first fixing seat in a penetrating manner, the swing arm and the first shaft sleeve are connected to the swing arm rotating shaft, the swing arm is connected with the linkage rod, the armrest is connected to one end of the armrest rotating shaft, the armrest rotating shaft is connected to the second fixing seat in a penetrating manner, the second shaft sleeve is connected to the armrest rotating shaft, a first matching surface is arranged on one side of the first shaft sleeve, a first positioning block and a first boss are arranged on the first matching surface, and a first positioning groove is arranged on the first boss, one side of the second shaft sleeve is a second matching surface, a second positioning block and a second boss are arranged on the second matching surface, a second positioning groove is formed in the second boss, the first matching surface and the second boss are arranged oppositely, the first boss and the second matching surface are arranged oppositely, a clamping groove is formed in the second fixing seat, a clamping block is arranged on the armrest rotating shaft, and the clamping block and the clamping groove are arranged oppositely.
The chair further comprises a third fixing seat and a third shaft sleeve, the third fixing seat is fixed on the inner support of the chair back, the armrest rotating shaft is connected to the third fixing seat in a penetrating mode, a third matching surface is arranged on one side of the third shaft sleeve, a third positioning block and a third boss are arranged on the third matching surface, a fourth matching surface is arranged on one side of the third fixing seat, a fourth boss is arranged on the fourth matching surface, a fourth positioning groove is formed in the fourth boss, the third matching surface and the fourth boss are arranged oppositely, and the fourth matching surface and the third boss are arranged oppositely. The rotation angle range of the third shaft sleeve is fixed in a certain range through the boss between the third fixing seat and the third shaft sleeve, the seat and the armrest are prevented from exceeding the stroke action, the third positioning block is matched with the fourth positioning groove, a certain positioning effect is generated after the armrest acts in place, and the armrest linkage assembly is further prevented from acting after the seat is adjusted in place.
The invention is further provided that the armrest rotating shaft and the swing arm rotating shaft are coaxially arranged.
The invention is further provided that the first shaft sleeve is fixed on the swing arm rotating shaft through a positioning pin.
The invention is further provided that the second shaft sleeve and the third shaft sleeve are fixed on the armrest rotating shaft through positioning pins.
The invention is further provided that one end of the swing arm is fixed on the swing arm rotating shaft, and the other end of the swing arm is movably connected on the linkage rod.
The invention is further provided that the inner bracket of the chair back comprises side plates and a transverse plate arranged between the side plates, the first fixing seat and the third fixing seat are fixed on the transverse plate, and the second fixing seat is fixed on the side plates.
The invention is further configured such that the first sleeve, the second sleeve and the third sleeve are of the same size.
The invention is further provided that the first positioning block, the second positioning block, the third positioning block and the clamping blocks are spring wave beads.
The armrest linkage components are symmetrically arranged at two ends of the support in the chair back, the linkage rod is arranged between the two armrest linkage components, and the two armrest linkage components share the same linkage rod.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the armrest linkage device of the chair in the technical scheme has the following use mode and principle: the lower end of the linkage rod is connected with the seat base, so that the linkage rod and the swing arm form linkage in the process of lying and standing the chair back. When the chair back is in a vertical state, the armrest and the chair back are approximately in a vertical relation; if the chair back is laid backwards, the linkage rod drives the swing arm to rotate, the swing arm drives the swing arm rotating shaft to rotate, the torque generated by the matching of the first positioning block and the second positioning groove and the matching of the second positioning block and the first positioning groove is larger than the torque generated by static friction between the rotating shaft and the shaft sleeve and between the fixing seats, so that the armrest rotating shaft rotates forwards along with the swing arm rotating shaft until the third fixing seat and the third shaft sleeve boss form stroke limit, meanwhile, the third positioning block and the fourth positioning groove form positioning fit, the lying of the chair back is completed, and the chair back and the armrest are positioned on the same horizontal plane at the moment. The handrail is in under the non-interlock mode, lift up the handrail, first locating piece loses the cooperation with the second locating slot, second locating piece loses the cooperation with first locating slot, fixture block and screens groove form the cooperation simultaneously, the boss of first axle sleeve and second axle sleeve no longer interlocks, make swing arm pivot and handrail pivot lose the interlock cooperation, the handrail pivot forms the cooperation with back of the chair inner support, the handrail pivot produces the complex moment of torsion with the third connecting seat and is greater than axle and axle sleeve, the produced moment of torsion of static friction between the fixing base, the handrail is located back of the chair inner support's curb plate one side, no matter how this moment adjusts the back of the chair, the handrail remains relative stillness with the back of the chair all the time.
The armrest linkage device has the two modes, and a normal person can use the chair in the linkage mode, so that the person sits on the chair to lie down backwards, the armrests rotate forwards along with the backward rotation of the chair back, and the armrests and the chair back are in the same horizontal plane when the chair is in a lying state; when a person with a large size uses the seat, a non-linkage mode is adopted, the armrests are lifted upwards firstly, so that the armrests and the seat back keep the same plane, the armrests do not rotate along with the rotation of the seat back, and the armrests do not influence people sitting on the seat.
The armrest linkage device has wide application scenes, the linkage rod is arranged at the back of the support in the chair back, the end part of the armrest is not provided with the connecting rod, and the maximum cross-sectional dimensions of the armrest rotating shaft and the swing arm rotating shaft are the diameters of the shaft sleeves, so that the chair back can be very thin, the chair back is more compact, and the whole chair is more concise; the handrail linkage device has high strength, is not easy to damage, and has long service life and convenient maintenance.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is a rear view of an embodiment of the present invention.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is a perspective view of the first sleeve, the second sleeve and the third sleeve according to the embodiment of the present invention, wherein (a) is a perspective view of the first sleeve, (b) is a perspective view of the second sleeve, and (c) is a perspective view of the third sleeve.
Fig. 5 is a sectional view of a handle rotating shaft and a second fixing base according to an embodiment of the present invention.
Fig. 6 is a perspective view of a third fixing base according to an embodiment of the invention.
Detailed Description
For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, integrally connected, or detachably connected; either mechanically or electrically, or internally communicating two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art will understand the specific meanings of the above terms according to specific situations.
With reference to fig. 1-6, the technical scheme of the invention is an armrest linkage device of a seat, comprising a seat back inner support a and an armrest linkage component b, wherein the armrest linkage component b is symmetrically arranged at two ends of the seat back inner support a, the armrest linkage component b comprises an armrest 1, an armrest rotating shaft 2, a swing arm 3, a swing arm rotating shaft 4, a linkage rod 5, a first fixing seat 6, a second fixing seat 7, a third fixing seat 8, a first shaft sleeve 9, a second shaft sleeve 10 and a third shaft sleeve 11, the armrest rotating shaft 2 and the swing arm rotating shaft 4 are coaxially arranged, the first fixing seat 6, the second fixing seat 7 and the third fixing seat 8 are all fixed on the seat back inner support a, the swing arm rotating shaft 4 is connected to the first fixing seat 6 in a penetrating manner, the swing arm 3 and the first shaft sleeve 9 are both connected to the swing arm rotating shaft 4, the swing arm 3 is connected to the linkage rod 5, the armrest 1 is connected to one end of the armrest rotating shaft 2, the armrest rotating shaft 2 is connected to the second fixing seat 7 and the third fixing seat 8 in a penetrating manner, the second bushing 10 is connected to the armrest rotating shaft 2, one side of the first bushing 9 is a first matching surface 91, the first matching surface 91 is provided with a first positioning block 92 and a first boss 93, the first boss 93 is provided with a first positioning groove 94, one side of the second bushing 10 is a second matching surface 101, the second matching surface 101 is provided with a second positioning block 102 and a second boss 103, the second boss 103 is provided with a second positioning groove 104, the first matching surface 91 is opposite to the second boss 103, the first boss 93 is opposite to the second matching surface 101, the second fixing seat 7 is provided with a clamping groove 71, the armrest rotating shaft 2 is provided with a clamping block 21, the clamping block 21 is opposite to the clamping groove 71, one side of the third shaft sleeve 11 is a third matching surface 111, the third matching surface 111 is provided with a third positioning block 112 and a third boss 113, one side of the third fixing seat 8 is a fourth matching surface 81, the fourth matching surface 81 is provided with a fourth boss 82, the fourth boss 82 is provided with a fourth positioning groove 83, the third matching surface 111 is opposite to the fourth boss 82, the fourth matching surface 81 is opposite to the third boss 113, the linkage rod 5 is arranged between the two swing arms 3 of the armrest linkage component b, and the two swing arms 3 share the same linkage rod 5.
The first shaft sleeve 9 is fixed on the swing arm rotating shaft 4 through a positioning pin, the second shaft sleeve 10 and the third shaft sleeve 11 are fixed on the handrail rotating shaft 2 through a positioning pin, and the first shaft sleeve 9, the second shaft sleeve 10 and the third shaft sleeve 11 are consistent in specification.
One end of the swing arm 3 is fixed on the swing arm rotating shaft 4, and the other end of the swing arm 3 is movably connected on the linkage rod 5.
The inner chair back bracket a comprises side plates a1 and a transverse plate a2 arranged between the side plates a1, the first fixing seat 6 and the third fixing seat 8 are fixed on the transverse plate a2, and the second fixing seat 7 is fixed on the side plates a 1.
The first positioning block 92, the second positioning block 102, the third positioning block 112 and the fixture block 21 are all spring beads, and the positioning blocks and the positioning grooves are in positioning fit by the acting force of the springs on the beads.
The usage mode and principle of the handrail linkage device of the embodiment are as follows: the lower end of the linkage rod is connected with the seat base, so that the linkage rod and the swing arm form linkage in the process of lying and standing the chair back. When the chair back is in a vertical state, the armrest and the chair back are approximately in a vertical relation; if the chair back is laid backwards, the linkage rod drives the swing arm to rotate, the swing arm drives the swing arm rotating shaft to rotate, the torque generated by the matching of the first positioning block and the second positioning groove and the matching of the second positioning block and the first positioning groove is larger than the torque generated by static friction between the rotating shaft and the shaft sleeve and between the fixing seats, so that the armrest rotating shaft rotates forwards along with the swing arm rotating shaft until the third fixing seat and the third shaft sleeve boss form stroke limit, meanwhile, the third positioning block and the fourth positioning groove form positioning fit, the lying of the chair back is completed, and the chair back and the armrest are positioned on the same horizontal plane at the moment. The handrail is in under the non-interlock mode, lift up the handrail, first locating piece loses the cooperation with the second locating slot, second locating piece loses the cooperation with first locating slot, fixture block and screens groove form the cooperation simultaneously, the boss of first axle sleeve and second axle sleeve no longer interlocks, make swing arm pivot and handrail pivot lose the interlock cooperation, the handrail pivot forms the cooperation with back of the chair inner support, the handrail pivot produces the complex moment of torsion with the third connecting seat and is greater than axle and axle sleeve, the produced moment of torsion of static friction between the fixing base, the handrail is located back of the chair inner support's curb plate one side, no matter how this moment adjusts the back of the chair, the handrail remains relative stillness with the back of the chair all the time.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (10)
1. An armrest linkage device of a chair is characterized by comprising a chair back inner support and an armrest linkage component, wherein the armrest linkage component comprises an armrest, an armrest rotating shaft, a swing arm rotating shaft, a linkage rod, a first fixing seat, a second fixing seat, a first shaft sleeve and a second shaft sleeve, the first fixing seat and the second fixing seat are both fixed on the chair back inner support, the swing arm rotating shaft is connected to the first fixing seat in a penetrating manner, the swing arm and the first shaft sleeve are both connected to the swing arm rotating shaft, the swing arm is connected with the linkage rod, the armrest is connected to one end of the armrest rotating shaft, the armrest rotating shaft is connected to the second fixing seat in a penetrating manner, the second shaft sleeve is connected to the armrest rotating shaft, a first matching surface is arranged on one side of the first shaft sleeve, and a first positioning block and a first boss are arranged on the first matching surface, the handrail fixing seat is characterized in that a first positioning groove is formed in the first boss, one side of the second shaft sleeve is a second matching surface, a second positioning block and a second boss are arranged on the second matching surface, a second positioning groove is formed in the second boss, the first matching surface and the second boss are arranged oppositely, the first boss and the second matching surface are arranged oppositely, a clamping groove is formed in the second fixing seat, a clamping block is arranged on the handrail rotating shaft, and the clamping block and the clamping groove are arranged oppositely.
2. The armrest linkage device of a seat according to claim 1, further comprising a third fixing seat and a third shaft sleeve, wherein the third fixing seat is fixed to the inner seat back bracket, the armrest rotating shaft is connected to the third fixing seat in a penetrating manner, a third mating surface is arranged on one side of the third shaft sleeve, a third positioning block and a third boss are arranged on the third mating surface, a fourth mating surface is arranged on one side of the third fixing seat, a fourth boss is arranged on the fourth mating surface, a fourth positioning groove is arranged on the fourth boss, the third mating surface is arranged opposite to the fourth boss, and the fourth mating surface is arranged opposite to the third boss.
3. The armrest linkage device of a seat as claimed in claim 1, wherein the armrest rotating shaft and the swing arm rotating shaft are coaxially arranged.
4. The armrest linkage device of a seat as claimed in claim 1, wherein the first shaft sleeve is fixed on the rotating shaft of the swing arm by a positioning pin.
5. The armrest linkage device of the seat as claimed in claim 2, wherein the second shaft sleeve and the third shaft sleeve are fixed on the armrest rotation shaft by a positioning pin.
6. The armrest linkage device of a seat as claimed in claim 1, wherein one end of the swing arm is fixed on the swing arm rotating shaft, and the other end of the swing arm is movably connected to the linkage rod.
7. The armrest linkage device for the seat as claimed in claim 2, wherein the inner seat back bracket comprises side plates and a cross plate disposed between the side plates, the first fixing seat and the third fixing seat are fixed on the cross plate, and the second fixing seat is fixed on the side plates.
8. The armrest linkage of a seat as set forth in claim 2 wherein said first bushing, said second bushing and said third bushing are of a uniform size.
9. The armrest linkage device of claim 2, wherein the first positioning block, the second positioning block, the third positioning block and the clamping block are spring beads.
10. The armrest linkage device of a seat as claimed in any one of claims 1 to 9, wherein the armrest linkage components are symmetrically disposed at two ends of the inner support frame of the seat back, the linkage rod is disposed between the swing arms of the armrest linkage components, and the two swing arms are connected to the linkage rod together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111320776.8A CN113951660B (en) | 2021-11-09 | 2021-11-09 | Armrest linkage device of chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111320776.8A CN113951660B (en) | 2021-11-09 | 2021-11-09 | Armrest linkage device of chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113951660A true CN113951660A (en) | 2022-01-21 |
| CN113951660B CN113951660B (en) | 2023-11-24 |
Family
ID=79469827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111320776.8A Active CN113951660B (en) | 2021-11-09 | 2021-11-09 | Armrest linkage device of chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113951660B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3143769U (en) * | 2008-04-18 | 2008-08-07 | タカラベルモント株式会社 | Handrail device for chairs |
| US20120074751A1 (en) * | 2010-09-24 | 2012-03-29 | Be Aerospace, Inc. | Passenger seat armrest recline mechanism |
| CN203000028U (en) * | 2012-12-14 | 2013-06-19 | 浙江工业大学 | Handrail connected type office leisure chair |
| CN204233389U (en) * | 2014-11-18 | 2015-04-01 | 福建荣耀健身器材有限公司 | The Massage chair frame of a kind of jig arm and back-rest linked |
| CN110803180A (en) * | 2019-12-11 | 2020-02-18 | 江苏中展车辆配件有限公司 | Seat for cab of motor car |
| US11000127B1 (en) * | 2019-12-17 | 2021-05-11 | Ningbo Kaimeng Electronic Technology Co., Ltd. | Armrest device for adjusting inclination angle of backrest |
-
2021
- 2021-11-09 CN CN202111320776.8A patent/CN113951660B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3143769U (en) * | 2008-04-18 | 2008-08-07 | タカラベルモント株式会社 | Handrail device for chairs |
| US20120074751A1 (en) * | 2010-09-24 | 2012-03-29 | Be Aerospace, Inc. | Passenger seat armrest recline mechanism |
| CN203000028U (en) * | 2012-12-14 | 2013-06-19 | 浙江工业大学 | Handrail connected type office leisure chair |
| CN204233389U (en) * | 2014-11-18 | 2015-04-01 | 福建荣耀健身器材有限公司 | The Massage chair frame of a kind of jig arm and back-rest linked |
| CN110803180A (en) * | 2019-12-11 | 2020-02-18 | 江苏中展车辆配件有限公司 | Seat for cab of motor car |
| US11000127B1 (en) * | 2019-12-17 | 2021-05-11 | Ningbo Kaimeng Electronic Technology Co., Ltd. | Armrest device for adjusting inclination angle of backrest |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113951660B (en) | 2023-11-24 |
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