CN113951660B - Armrest linkage device of chair - Google Patents
Armrest linkage device of chair Download PDFInfo
- Publication number
- CN113951660B CN113951660B CN202111320776.8A CN202111320776A CN113951660B CN 113951660 B CN113951660 B CN 113951660B CN 202111320776 A CN202111320776 A CN 202111320776A CN 113951660 B CN113951660 B CN 113951660B
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- China
- Prior art keywords
- armrest
- boss
- linkage
- rotating shaft
- matching surface
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- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000008589 Obesity Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000020824 obesity Nutrition 0.000 description 1
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
Landscapes
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Special Chairs (AREA)
Abstract
The invention discloses an armrest linkage device of a seat, which comprises a seat back inner support and an armrest linkage assembly, wherein the armrest linkage assembly comprises an armrest, an armrest rotating shaft, a swinging arm rotating shaft, a linkage rod, a first fixing seat, a second fixing seat, a first shaft sleeve and a second shaft sleeve, the swinging arm and the first shaft sleeve are connected to the swinging arm rotating shaft, the swinging arm is connected with the linkage rod, the second shaft sleeve is connected to the armrest 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 is opposite to the second boss, a clamping groove is arranged on the second fixing seat, and a clamping block is arranged on the armrest rotating shaft and opposite to the clamping groove. The handrail linkage device is convenient and flexible to use, compact and concise in whole and high in strength.
Description
Technical Field
The invention relates to the technical field of seats, in particular to a handrail linkage device of a seat.
Background
The seat in the existing market is commonly provided with armrests, and the existing armrests are connected with a seat body in two ways: 1. the armrest rotating shaft and the swing arm are completely fixed; 2. the tail end of the armrest is provided with an additional supporting linkage rod. The first handrail cannot be freely turned over and can only move along with the rotation of the chair back, and for some people with obesity, the person can possibly sit down because of small intervals among the handrails, and in certain application scenes, the handrails are not needed and cannot be stored, so that normal use is affected; the second armrest can realize the linkage of the armrest, but the linkage rod is arranged at the tail end of the armrest, so that the overall design sense is destroyed, and the overall structure volume of the seat is also more bulky.
Disclosure of Invention
In order to solve the problems, the technical scheme provided by the invention is as follows:
the utility model provides a handrail interlock device of seat, includes back of the chair inner support and handrail interlock subassembly, handrail interlock subassembly includes handrail, handrail pivot, swing arm pivot, interlock pole, first fixing base, second fixing base, first axle sleeve and second axle sleeve, first fixing base with the second fixing base is all fixed on the back of the chair inner support, the swing arm pivot wears to be put to be connected on the first fixing base, the swing arm with first axle sleeve is all connected in the swing arm pivot, the swing arm with the interlock pole is connected, the handrail is connected the one end of handrail pivot, the handrail pivot wears to be connected on the second fixing base, the second axle sleeve is connected in the handrail pivot, one side of first axle sleeve is first mating surface, be equipped with first locating block and first boss on the first boss, one side of second axle sleeve is the second mating surface, be equipped with second locating block and second boss on the second boss, be equipped with the second locating slot on the second boss, first boss with the second boss sets up the second boss relatively, the second boss sets up the second boss relatively.
The invention further provides a third fixing seat and a third shaft sleeve, wherein 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 way, one side of the third shaft sleeve is a third matching surface, a third positioning block and a third boss are arranged on the third matching surface, one side of the third fixing seat is a fourth matching surface, a fourth boss is arranged on the fourth matching surface, a fourth positioning groove is arranged on the fourth boss, the third matching surface is opposite to the fourth boss, and the fourth matching surface is opposite to the third boss. 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 armrests are prevented from exceeding the stroke action, the third positioning block is matched with the fourth positioning groove, a certain positioning action is generated after the armrests are in place, and the action of the armrests linkage assembly after the seat is adjusted in place is further avoided.
The invention further provides that the armrest rotating shaft and the swing arm rotating shaft are coaxially arranged.
The invention is further arranged that the first shaft sleeve is fixed on the swing arm rotating shaft through a locating pin.
The invention further provides that the second sleeve and the third sleeve are fixed on the armrest rotating shaft through positioning pins.
The invention is further arranged 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 further provides that the chair back inner support 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 arranged such that the first sleeve, the second sleeve and the third sleeve are of identical specifications.
The invention further provides that the first positioning block, the second positioning block, the third positioning block and the clamping block are spring wave beads.
The invention further provides that the armrest linkage assemblies are symmetrically arranged at two ends of the chair back inner support, the linkage rod is arranged between the two armrest linkage assemblies, and the two armrest linkage assemblies 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 seat in the technical proposal 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 lying and standing processes of the chair back. The armrest is in a linkage mode, the first shaft sleeve is meshed with the boss of the second shaft sleeve, the first positioning block is matched with the second positioning groove, and the second positioning block is matched with the first positioning groove, so that when the chair back is in a vertical state, the armrest is approximately in vertical relation with the chair back; if the chair back is reclined, 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 cooperation of the first positioning block and the second positioning groove and the cooperation of the second positioning block and the first positioning groove is larger than the torque generated by static friction force between the rotating shaft and the shaft sleeve as well as between the first positioning groove, so that the armrest rotating shaft rotates forwards along with the swing arm rotating shaft until the third fixing seat and the boss of the third shaft sleeve form stroke limit, and meanwhile, the third positioning block and the fourth positioning groove form positioning cooperation to finish the lying flat of the chair back, and the chair back and the armrest are positioned on the same horizontal plane. The armrest is in under the non-interlock mode, lift up the armrest, first locating piece and second constant head tank lose the cooperation, second locating piece and first constant head tank lose the cooperation, fixture block and screens groove cooperation simultaneously, first axle sleeve no longer interlock with the boss of second axle sleeve for swing arm pivot and armrest pivot lose interlock cooperation, armrest pivot and back of the chair inner support formation cooperation, armrest pivot and third connecting seat produce the moment of torsion that the complex moment of torsion produced more than the static friction force between axle and axle sleeve, the fixing base, the armrest is located back of the chair inner support's curb plate one side, at this moment anyway adjust the back of the chair, the armrest remains relative static with the back of the chair all the time.
The armrest linkage device has the two modes, when a person with a normal body shape uses the seat, the linkage mode is adopted, the person sits on the seat to lie backwards and then turns forwards along with the backward rotation of the seat back, and when the seat is in a lying state, the armrest and the seat back are in the same horizontal plane; when a person with a larger body size uses the chair, a non-linkage mode is adopted, the armrest is lifted upwards, so that the armrest and the chair back keep the same plane, the armrest does not rotate along with the rotation of the chair back, and the armrest does not influence people sitting on the chair.
The armrest linkage device has wide application scene, the linkage rod is arranged at the back of the inner bracket of the chair back, the end part of the armrest is not provided with the connecting rod, and the largest section size of the armrest rotating shaft and the swing arm rotating shaft is the diameter of the shaft sleeve, 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, long service life and convenient maintenance, and is not easy to damage.
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 a first sleeve, a second sleeve, and a third sleeve according to an embodiment of the present invention, where (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 cross-sectional view of the armrest hinge and the 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 present invention.
Detailed Description
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; can be mechanical connection or electric connection, or can be communication between two elements; may be directly connected or indirectly connected through an intermediate medium, and the specific meaning of the above terms will be understood by those skilled in the art according to the specific circumstances.
In combination with fig. 1-6, the technical scheme of the invention is a handrail linkage device of a chair, which comprises a chair back inner bracket a and a handrail linkage component b, wherein the handrail linkage component b is symmetrically arranged at two ends of the chair back inner bracket a, the handrail linkage component b comprises a handrail 1, a handrail rotating shaft 2, a swinging arm 3, a swinging arm rotating shaft 4, a linkage rod 5, a first fixed seat 6, a second fixed seat 7, a third fixed seat 8, a first shaft sleeve 9, a second shaft sleeve 10 and a third shaft sleeve 11, the handrail rotating shaft 2 and the swinging arm rotating shaft 4 are coaxially arranged, the first fixed seat 6, the second fixed seat 7 and the third fixed seat 8 are respectively fixed on the chair back inner bracket a, the swinging arm rotating shaft 4 is connected to the first fixed seat 6 in a penetrating way, the swinging arm 3 is connected with the linkage rod 5, the first fixed seat 2 is connected with one end of the handrail rotating shaft 2, the rotating shaft 2 is connected to the second fixed seat 7 and the third fixed seat 8 in a penetrating way, the second shaft sleeve 10 is connected with the second shaft sleeve 10, a first boss 103 is arranged on the second shaft sleeve 10 and is matched with the second boss 101, a boss 101 is arranged on one side of the second boss 101, a boss is matched with the second boss 101, a boss is arranged on the second boss 101, a boss is matched with the second boss is arranged on one side of the boss 101, the handrail rotating shaft 2 is provided with a clamping block 21, the clamping block 21 and the clamping groove 71 are oppositely arranged, one side of the third shaft sleeve 11 is provided with 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 provided with 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 and the fourth boss 82 are oppositely arranged, the fourth matching surface 81 and the third boss 113 are oppositely arranged, the linkage rod 5 is arranged between two swinging arms 3 of the handrail linkage assembly b, and the two swinging arms 3 share the same linkage rod 5.
The first shaft sleeve 9 is fixed on the swing arm rotating shaft 4 through a locating pin, the second shaft sleeve 10 and the third shaft sleeve 11 are fixed on the armrest rotating shaft 2 through locating pins, and the first shaft sleeve 9, the second shaft sleeve 10 and the third shaft sleeve 11 are identical 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 bracket a of the chair back comprises a side plate 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 plate a 1.
The first positioning block 92, the second positioning block 102, the third positioning block 112 and the clamping block 21 all adopt spring beads, and the positioning blocks are matched with the positioning grooves in a positioning way by utilizing the acting force of the springs on the beads.
The handrail linkage device of the embodiment is used in the following manner 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 lying and standing processes of the chair back. The armrest is in a linkage mode, the first shaft sleeve is meshed with the boss of the second shaft sleeve, the first positioning block is matched with the second positioning groove, and the second positioning block is matched with the first positioning groove, so that when the chair back is in a vertical state, the armrest is approximately in vertical relation with the chair back; if the chair back is reclined, 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 cooperation of the first positioning block and the second positioning groove and the cooperation of the second positioning block and the first positioning groove is larger than the torque generated by static friction force between the rotating shaft and the shaft sleeve as well as between the first positioning groove, so that the armrest rotating shaft rotates forwards along with the swing arm rotating shaft until the third fixing seat and the boss of the third shaft sleeve form stroke limit, and meanwhile, the third positioning block and the fourth positioning groove form positioning cooperation to finish the lying flat of the chair back, and the chair back and the armrest are positioned on the same horizontal plane. The armrest is in under the non-interlock mode, lift up the armrest, first locating piece and second constant head tank lose the cooperation, second locating piece and first constant head tank lose the cooperation, fixture block and screens groove cooperation simultaneously, first axle sleeve no longer interlock with the boss of second axle sleeve for swing arm pivot and armrest pivot lose interlock cooperation, armrest pivot and back of the chair inner support formation cooperation, armrest pivot and third connecting seat produce the moment of torsion that the complex moment of torsion produced more than the static friction force between axle and axle sleeve, the fixing base, the armrest is located back of the chair inner support's curb plate one side, at this moment anyway adjust the back of the chair, the armrest remains relative static with the back of the chair all the time.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (8)
1. The armrest linkage device of the seat is characterized by comprising a seat back inner support and an armrest linkage assembly, wherein the armrest linkage assembly comprises an armrest, an armrest rotating shaft, a swinging arm rotating shaft, a linkage rod, a first fixing seat, a second fixing seat, a third fixing seat, a first shaft sleeve, a second shaft sleeve and a third shaft sleeve, the armrest rotating shaft and the swinging arm rotating shaft are coaxially arranged, the first fixing seat and the second fixing seat are both fixed on the seat back inner support, the swinging arm rotating shaft is connected to the first fixing seat in a penetrating way, the swinging arm and the first shaft sleeve are connected to the swinging arm rotating shaft, the swinging arm is connected to 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 way, one side of the first shaft sleeve is provided with a first matching surface, the first matching surface is provided with a first positioning block and a first boss, one side of the second shaft sleeve is provided with a second matching surface, the second matching surface is provided with a second positioning block and a second boss, the second matching surface is provided with a second positioning block, the second boss is arranged opposite to the second positioning block is provided with the second positioning boss, and the second boss is provided with a corresponding positioning boss; the third fixing seat is fixed on the chair back inner support, the armrest rotating shaft is connected to the third fixing seat in a penetrating manner, one side of the third shaft sleeve is a third matching surface, a third positioning block and a third boss are arranged on the third matching surface, one side of the third fixing seat is a fourth matching surface, a fourth boss is arranged on the fourth matching surface, a fourth positioning groove is formed in the fourth boss, the third matching surface is opposite to the fourth boss, and the fourth matching surface is opposite to the third boss.
2. The armrest linkage of claim 1 wherein the first bushing is secured to the swing arm shaft by a dowel pin.
3. The armrest linkage of claim 1 wherein the second sleeve and the third sleeve are secured to the armrest shaft by a dowel.
4. The armrest linkage of claim 1, wherein one end of the swing arm is fixed on the swing arm shaft, and the other end of the swing arm is movably connected to the linkage rod.
5. The armrest linkage of claim 1, wherein the seat back inner support comprises side plates and a cross plate disposed between the side plates, the first fixing base and the third fixing base are fixed on the cross plate, and the second fixing base is fixed on the side plates.
6. The armrest linkage of claim 1 wherein the first bushing, the second bushing, and the third bushing are of a uniform size.
7. The armrest linkage of claim 1, wherein the first positioning block, the second positioning block, the third positioning block, and the latch block are spring beads.
8. The armrest linkage device of any one of claims 1-7, wherein the armrest linkage assemblies are symmetrically disposed at two ends of the seat back inner support, the linkage rod is disposed between two swing arms of the armrest linkage assemblies, and the two swing arms are jointly connected to the linkage rod.
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 CN113951660A (en) | 2022-01-21 |
| CN113951660B true 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 (5)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8534759B2 (en) * | 2010-09-24 | 2013-09-17 | Be Aerospace, Inc. | Passenger seat armrest recline mechanism |
-
2021
- 2021-11-09 CN CN202111320776.8A patent/CN113951660B/en active Active
Patent Citations (5)
| 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 |
| 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 |
|---|---|
| CN113951660A (en) | 2022-01-21 |
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