CN101731869B - Rising handrail - Google Patents
Rising handrail Download PDFInfo
- Publication number
- CN101731869B CN101731869B CN200810176452XA CN200810176452A CN101731869B CN 101731869 B CN101731869 B CN 101731869B CN 200810176452X A CN200810176452X A CN 200810176452XA CN 200810176452 A CN200810176452 A CN 200810176452A CN 101731869 B CN101731869 B CN 101731869B
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- Prior art keywords
- clamping piece
- combination
- handrail
- articulated
- rising
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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
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
- A47C1/0303—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction
- A47C1/0305—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction by peg-and-notch or pawl-and-ratchet mechanism
Abstract
The invention provides a rising handrail, which comprises a main body, a handrail body and an adjustment device, wherein the first end of the main body is combined with a chair; the second end of the main body is provided with a positioning groove; a plurality of positioning parts longitudinally arranged in parallel are arranged in the positioning groove; the surface of the inner wall of the handrail body is convexly provided with two longitudinal holding parts; the adjustment device comprises a combination body, a seizing piece and an elastic body; the combination body stretches through the handrail body and is combined with the handrail body; two longitudinal butting parts are formed on the outer surface of the combination body; the two longitudinal butting parts are just held by the two holding parts of the handrail body; the middle segment of the seizing piece is pivoted with the combination body; the first end of the seizing piece is convexly provided with a press part convexly stretching in a gap of the handrail body; and the second end of the seizing piece is convexly provided with a seizing part selectively seized by the positioning parts of the main body.
Description
Technical field
The present invention relates to a kind of handrail, refer in particular to a kind of rising handrail with better structural strength.
Background technology
Please refer to Figure 11 adjusts structure for traditional office chair handrail schematic diagram, comprise: hollow sleeve 91 tops are incorporated into armrest body 92, hollow sleeve 91 tops also articulate a shank of the key 93, shank of the key 93 selectivity clip supporters 94, by controlling the shank of the key 93 selective fixed supporters 94 that are positioned at, further allow hollow sleeve 91 and supporter 94 change relative position, reach the purpose of handrail lifting.
Wherein, shank of the key 93 first ends are provided with drive-connecting shaft 931, shank of the key 93 second ends are provided with convex body 932, and shank of the key 93 first ends also form a holding part 933, shank of the key 93 also is provided with a spring 934 between drive-connecting shaft 931 and convex body 932, drive-connecting shaft 931 is articulated in hollow sleeve 91 tops, and pulls in hollow sleeve 91 internal faces in spring 934 and top.
The design of prior art has disappearance, and remains to be improved:
First, shank of the key 93 first ends are articulated in hollow sleeve 91, the second end clip is in supporter 94, the holding part 933 that shank of the key 93 first ends are pulled in utilization allows shank of the key 93 produce pivot, but, the drive-connecting shaft 931 of shank of the key 93 all is positioned at first end with holding part 933, and when controlling shank of the key 93 and can't obtain the balance of strength, and also there is the disappearance that shank of the key 93 can't drive hollow sleeve 91 really on the top that shank of the key 93 is articulated in hollow sleeve 91.
Second, the position that spring 934 is provided with is positioned at the centre of drive-connecting shaft 931 and convex body 932, in other words, spring 934 is located at the middle section of drive-connecting shaft 931, and pull at shank of the key 93 in spring 934 1 ends top, pull at hollow sleeve 91 internal faces in other end top, spring 934 does not in fact obtain good setting, spring 934 breaks away from both allocations originally easily when controlling shank of the key 93, and make shank of the key 93 lose the effect of the automatic clip that resets, and when spring 934 dropped between shank of the key 93 and hollow sleeve 91, the effect that will hinder shank of the key 93 to pivot in hollow sleeve 91 further allowed handrail lose the purpose of adjusting height.
The 3rd; shank of the key 93 only is articulated in hollow sleeve 91 by drive-connecting shaft 931; when reciprocal operation handrail operator presses down armrest body; the strength that shank of the key 93 and hollow sleeve 91 are pressed down for a long time; the thing of hollow sleeve 91 takes place to break away from drive-connecting shaft 931 regular meetings of shank of the key 93, can't use and cause handrail to damage.
The design of prior art has many disappearances, and the necessity that is improved is arranged really.
Summary of the invention
Main purpose of the present invention is the defective that overcomes above-mentioned prior art, and a kind of rising handrail with better structural strength is provided.
In order to achieve the above object, the invention provides a kind of rising handrail, it includes: a body, it comprises first end and second end, described body first end is incorporated into seat, and described body second end is provided with a locating slot, is provided with the location division that a plurality of parallel longitudinals are arranged in the described locating slot; One armrest body, a side of described armrest body is provided with a breach, and the internal face of described armrest body is convexly equipped with two holding part longitudinally; One adjusting device, it comprises a combination and a clamping piece, described combination stretches through and is incorporated into described armrest body, described combination one end is a tank, described tank comprises the two side, the outer surface of described tank two side forms an abutting part longitudinally respectively, described two abutting parts provide two holding part of described armrest body to seize on both sides by the arms, described clamping piece comprises first end and second end, described clamping piece stage casing is articulated in described combination, and described clamping piece first end convexes with a press section, and described press section convexedly stretches in the breach of described armrest body, described clamping piece second end convexes with a blocking part, and described blocking part selectivity clip is in the location division of described body.
Beneficial effect of the present invention is:
First, rising handrail clamping piece of the present invention is articulated in combination with the middle section, the balance that can acquire strength when making clamping piece pivot, and by pushing the press section of clamping piece first end, the certain clip of blocking part that makes clamping piece second end obtains the effect that preferable certain drive clamping piece pivots in the location division of body.
Second, rising handrail elastomer of the present invention is located at first end of clamping piece, and elastomer is limited between clamping piece first end and the combination, when not controlling clamping piece, elastomeric resilient discharges is replacing clamping piece and combination, when controlling clamping piece, elastomer suffers oppression and is squeezed in combination, and elastomer is restricted between clamping piece and the combination elastomer really and does not have and come off.
The 3rd, convex with two holding part longitudinally in the body tube portion of rising handrail armrest body of the present invention, the combination of adjusting device vertically is provided with two abutting parts, body is nested with combination, and abutting part in the holding part clamping, even if use rising handrail for a long time, the combination of adjusting device also can not extend out or the two side of combination and the thing that clamping piece breaks away from, and the probability that further allows rising handrail damage descends.
Description of drawings
Fig. 1 is the stereo appearance figure of rising handrail of the present invention;
Fig. 2 is the three-dimensional exploded view of rising handrail first embodiment of the present invention;
Fig. 3 is the three-dimensional exploded view of rising handrail first embodiment of the present invention;
Fig. 4 is the generalized section of rising handrail first embodiment of the present invention;
The cutaway view that Fig. 5 is got along the 5-5 hatching of Fig. 4 for the present invention;
The cutaway view that Fig. 6 is got along the 6-6 hatching of Fig. 4 for the present invention;
Fig. 7 controls the schematic diagram of rising handrail for the continuity of Fig. 4 of the present invention, table;
Fig. 8 is the three-dimensional exploded view of rising handrail second embodiment of the present invention;
Fig. 9 is the three-dimensional exploded view of rising handrail second embodiment of the present invention;
Figure 10 is the generalized section of rising handrail second embodiment of the present invention;
Figure 11 is the schematic diagram that traditional office chair handrail is adjusted structure.
Description of reference numerals: 91-hollow sleeve; The 92-armrest body; The 93-shank of the key; The 931-drive-connecting shaft; The 932-convex body; The 933-holding part; The 934-spring; The 94-supporter; The 10-body; The 11-locating slot; The 111-location division; The 112-rib; The 20-armrest body; The 21-body; 211-tube portion; The 212-carrier; The 213-breach; The 214-holding part; The 22-supporter; The 30-adjusting device; The 31-combination; The 311-joint portion; The 312-tank; The 313-sidewall; 314-supports portion; 315-pivot portion; The 316-abutting part; The 32-clamping piece; The 321-articulated section; The 3211-inclined-plane; The 322-protuberance; The 323-press section; The 324-blocking part; The 325-groove; The 33-elastomer; The 34-clamping piece; The 341-articulated section; The 3411-inclined-plane; The 342-protuberance; The 343-press section; The 344-blocking part; The 345-groove; The 316-top; The 40-body; The 41-locating slot; The 411-location division; The 412-rib; The 413-stopper; The 4131-stopping surface; The 4132-guiding face.
The specific embodiment
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the present invention is above-mentioned.With reference to Fig. 1, be the stereo appearance figure of rising handrail of the present invention.Rising handrail of the present invention is to include a body 10, an armrest body 20 and an adjusting device 30, described body 10 comprises first end and second end, described body 10 first ends are incorporated into seat, described body 10 second ends are extended through described armrest body 20, and described armrest body 20 is combined with described adjusting device 30, described adjusting device 30 can described relatively body 10 rise and fall, described adjusting device 30 is selective fixed to be positioned at described body 10, further fixes the relative position of described body 10 and described armrest body 20.
With reference to Fig. 2 and Fig. 3, be the three-dimensional exploded view of rising handrail first embodiment of the present invention.Described body 10 first ends and second end form L shaped bending, described body 10 second ends are provided with a locating slot 11, described locating slot 11 is communicated with described body 10 second end ends, be provided with the location division 111 that a plurality of parallel longitudinals are arranged in the described locating slot 11, and the structural strength of each location division 111 is further strengthened also with rib 112 connections longitudinally in the location division 111 of each row.
Described armrest body 20 comprises a body 21 and a supporter 22, described body 21 comprises first end and second end, described body 21 first ends are a portion 211, described body 21 second ends are a carrier 212, described carrier 212 combines with described supporter 22, one side of described tube portion 211 and be provided with a breach 213 near the place of described carrier 212, the internal face of described body 21 are convexly equipped with two holding part 214 longitudinally.
Described adjusting device 30 comprises a combination 31, a clamping piece 32 and an elastomer 33.Described combination 31 is column, and described combination 31 comprises first end and second end, and described combination 31 first ends are a joint portion 311, and described combination 31 is inserted into described tube portion 211, and described joint portion 311 is incorporated into described carrier 212.Described combination 31 second ends are a tank 312, described tank 312 comprises two side 313 and forms and to penetrate shape, described tank 312 forms one to portion 314 with the end that described joint portion 311 joins, the middle section of described tank 312 two sides 313 is respectively equipped with one and is poroid pivot portion 315, and the outer surface of described tank 312 two sides 313 forms an abutting part 316 longitudinally respectively, described abutting part 316 is recess, described two abutting parts 316 just provide two holding part 214 of described body 21 ccontaining, and described two holding part 214 are being seized the abutting part 316 of described tank 312 two sides 313 on both sides by the arms.
Described clamping piece 32 comprises first end and second end, middle section between described clamping piece 32 two ends is provided with two articulated sections 321, described articulated section 321 forms protrudes column, the side face of described articulated section 321 and end form an inclined-plane 3211, by the design on described inclined-plane 3211, make described articulated section 321 can be easy to be arranged in the pivot portion 315 of described combination 31.Described clamping piece 32 first ends form a protuberance 322, described protuberance 322 forms vertical with described two articulated sections 321, described protuberance 322 is arranged in described elastomer 33, and described elastomer 33 is connected to the portion 314 that supports of described combination 31, and the described portion 314 that supports does not come off with the described elastomer 33 of described protuberance 322 restrictions.The one side that described clamping piece 32 first ends differ from described protuberance 322 convexes with a press section 323, and described press section 323 convexedly stretches in the breach 213 of 21 portions 211 of described body.Described clamping piece 32 second ends convex with a row blocking part 324, described blocking part 324 vertically and be provided with a groove 325, described blocking part 324 selectivity clips are in described body 10 location divisions 111, and described groove 325 and described 112 concavo-convex cooperations of formation of rib.
With reference to Fig. 4 to Fig. 6, be the generalized section of rising handrail first embodiment of the present invention.Described body 10 of described armrest body 20 sockets and described adjusting device 30, the body 21 of described armrest body 20 combines with the combination 31 of described adjusting device 30, the pivot portion 315 of described combination 31 is articulated with the articulated section 321 of described clamping piece 32, the cylindrical shell 211 of described armrest body 20 bodies 21 is coating the combination 31 and clamping piece 32 of described body 10 and described adjusting device 30, two holding part 214 of described cylindrical shell 211 internal faces just are inserted into the abutting part 316 of described combination 31, described two holding part 214 are further being seized described combination 31 on both sides by the arms, when the combination 31 of described adjusting device 30 was bearing the strength that armrest body 20 presses down for a long time, the two side 313 that can avoid having the combination 31 of tank 312 really produced and expands outwardly, the disappearance of distortion.
Described clamping piece 32 is articulated in the pivot portion 315 of described combination 31 with the articulated section 321 in stage casing, described clamping piece 32 first ends are provided with described elastomer 33, described elastomer 33 also is connected to the portion 314 that supports of described combination 31, and blocking part 324 clips of described clamping piece 32 second ends are in the location division 111 of described body 10.Make that described clamping piece 32 is fulcrum and the elastomer 33 and the two ends of blocking part 324 just like seesaw at two ends make described clamping piece 32 that the effect of balance can be arranged with the stage casing, do not have an end and bear the disappearance that the lighter weight other end bears heavier weight.
Blocking part 324 clips of described clamping piece 32 are in the location division 111 of described body 10, the groove of described clamping piece 32 325 sheathed the rib 112 of described body, make described clamping piece 32 and described body 10 produce the effect of certain concavo-convex location.
With reference to Fig. 7, be the schematic diagram of rising handrail adjustment height of the present invention.The press section 323 of described adjusting device 30 clamping pieces 32 of operator presses, described clamping piece 32 first ends are oppressed described elastomer 33, described clamping piece 32 is that fulcrum produces pivot with articulated section 321 (not seeing among the figure), make the blocking part 324 of described clamping piece 32 second ends break away from the location division 111 of described body 10, the operator can drive described armrest body 20 and move up and down with described adjusting device 30 relative described bodies 10, when described armrest body 20 is adjusted to correct position with described adjusting device 30, the operator decontrols described press section 323, described elastomer 33 elasticity discharge, described clamping piece 32 produces and pivots, described blocking part 324 is the location division 111 of clip in described body 10, reaches the effect that described adjusting device 30 is positioned described body 10.
With reference to Fig. 8 to Figure 10, be three-dimensional exploded view and the generalized section of rising handrail second embodiment of the present invention.The difference of second embodiment and first embodiment only is described body 40 and described clamping piece 34, and in addition, other member all is same as first embodiment.Described body 40 comprises first end and second end, and described body 40 first ends and second end form L shaped bending.Described body 40 first ends can be incorporated into seat, described body 40 second ends are provided with a locating slot 41, described locating slot 41 is communicated with described body 40 second end ends, be provided with the location division 411 that a plurality of parallel longitudinals are arranged in the described locating slot 41, and the structural strength of each location division 411 is further strengthened also with rib 412 connections longitudinally in the location division 411 of each row.The body 40 of second embodiment and the difference of first embodiment are that described rib 412 has a stopper 413 corresponding to the protruding respectively length in position of each row location division 411, and described stopper 413 comprises that a straight stopping surface 4131 and is the guiding face 4132 of arcuation.
Described clamping piece 34 comprises first end and second end, middle section between described clamping piece 34 two ends is provided with two articulated sections 341, described articulated section 341 forms protrudes column, the side face of described articulated section 341 and end form an inclined-plane 3411, by the design on described inclined-plane 3411, make described articulated section 341 can be easy to be arranged in the pivot portion 315 of described combination 31.Described clamping piece 34 first ends form a protuberance 342, and described protuberance 342 is vertical with described two articulated sections, 341 formation, and described protuberance 342 is arranged in described elastomer 33, and described elastomer 33 is connected to the portion 314 that supports of described combination 31.The one side that described clamping piece 34 first ends differ from described protuberance 342 convexes with a press section 343, and described press section 343 convexedly stretches in the breach 213 of 21 portions 211 of described body.Described clamping piece 34 second ends convex with two row blocking parts 344, described two row blocking parts 344 vertically and be provided with a groove 345, described groove 345 also is provided with a top 346 corresponding to the blocking part 344 of clamping piece 34 ends, described two row blocking parts, 344 selectivity clips are in described body 40 location divisions 411, and described groove 345 forms concavo-convex the cooperation with described rib 412, and described top 346 and selectivity are resisted against the stopper 413 of described body 40.When the adjusting device 30 of rising handrail moves down, the press section 343 of the described clamping piece 34 of operator presses, the top 346 of described clamping piece 34 is along the guiding face 4132 of described body 40 stoppers 413 and move down, make the rising handrail can be comparatively smooth and easy when adjust descending, when being adjusted to suitable position, decontrol described press section 343 and promptly can make described top 346 be resisted against the stopping surface 4131 of described stopper 413, and described blocking part 344 clips 411 reach positioning function in the location division.
Can summarize the present invention with regard to the above and have following advantage:
1. rising handrail of the present invention, clamping piece is articulated in combination with the middle section, the balance that can acquire strength when making clamping piece pivot, and by pushing the press section of clamping piece first end, the certain clip of blocking part that makes clamping piece second end obtains the effect that preferable certain drive clamping piece pivots in the location division of body.
2. rising handrail of the present invention, elastomer is located at first end of clamping piece, and elastomer is limited between clamping piece first end and the combination, when not controlling clamping piece, elastomeric resilient discharges is replacing clamping piece and combination, when controlling clamping piece, elastomer suffers oppression and is squeezed in combination, and elastomer is restricted between clamping piece and the combination elastomer really and does not have and come off.
3. rising handrail of the present invention, convex with two holding part longitudinally in the body tube portion of armrest body, the combination of adjusting device vertically is provided with two abutting parts, body is nested with combination, and abutting part in the holding part clamping, even if use rising handrail for a long time, the combination of adjusting device also can not extend out or the two side of combination and the thing that clamping piece breaks away from, and the probability that further allows handrail damage descends.
More than explanation is just illustrative for the purpose of the present invention, and nonrestrictive, those of ordinary skills understand; under the situation of the spirit and scope that do not break away from following claims and limited, can make many modifications, change; or equivalence, but all will fall within the scope of protection of the present invention.
Claims (8)
1. rising handrail is characterized in that it includes:
One body, it comprises first end and second end, and described body first end is incorporated into seat, and described body second end is provided with a locating slot, is provided with the location division that a plurality of parallel longitudinals are arranged in the described locating slot;
One armrest body, a side of described armrest body is provided with a breach, and the internal face of described armrest body is convexly equipped with two holding part longitudinally;
One adjusting device, it comprises a combination and a clamping piece, described combination stretches through and is incorporated into described armrest body, described combination one end is a tank, described tank comprises the two side, the outer surface of described tank two side forms an abutting part longitudinally respectively, described two abutting parts provide two holding part of described armrest body to seize on both sides by the arms, described clamping piece comprises first end and second end, described clamping piece stage casing is articulated in described combination, described clamping piece first end convexes with a press section, described press section convexedly stretches in the breach of described armrest body, described clamping piece second end convexes with a blocking part, and described blocking part selectivity clip is in the location division of described body, and described adjusting device also comprises an elastomer, described elastomer is located between described clamping piece first end and the described combination, described combination tank forms one and supports portion, and described clamping piece first end forms a protuberance in contrast to the one side of described press section, and described portion and the described protuberance of supporting limits described elastomer and do not come off.
2. rising handrail according to claim 1, it is characterized in that the structural strength of each location division is strengthened with a rib connection longitudinally in the location division of each row of described body, described blocking part vertically is provided with a groove, and described groove forms concavo-convex the cooperation with described rib.
3. rising handrail according to claim 2, it is characterized in that, described rib has a stopper corresponding to the protruding respectively length in position of each row location division, the groove of described clamping piece is provided with a top corresponding to the blocking part of clamping piece end, described top selectivity is resisted against the stopper of described body, described stopper comprises that a straight stopping surface and is the guiding face of arcuation, described guiding face provides the top of described clamping piece to move down, and makes described top be resisted against the stopping surface of described stopper.
4. rising handrail according to claim 1 is characterized in that, the two side of described combination middle section is respectively equipped with a pivot portion, and the middle section of described clamping piece is provided with two articulated sections, and described pivot portion and described articulated section are articulated.
5. rising handrail according to claim 4, it is characterized in that, described pivot portion is poroid, described articulated section forms protrudes column, both are concavo-convex cooperation, the side face of described articulated section and end form an inclined-plane, by the design on described inclined-plane, make described articulated section be easy to be arranged in the pivot portion of described combination.
6. rising handrail according to claim 1 is characterized in that, described body first end and second end form L shaped bending, and the locating slot of described body is communicated with the described body second end end.
7. rising handrail according to claim 1, it is characterized in that, described armrest body comprises a body and a supporter, described body comprises first end and second end, described body first end is a portion, described body second end is a carrier, and described carrier and described supporter combine, and described carrier and described combination combine.
8. rising handrail according to claim 1 is characterized in that described holding part is convex shape, and described abutting part is recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810176452XA CN101731869B (en) | 2008-11-11 | 2008-11-11 | Rising handrail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810176452XA CN101731869B (en) | 2008-11-11 | 2008-11-11 | Rising handrail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101731869A CN101731869A (en) | 2010-06-16 |
| CN101731869B true CN101731869B (en) | 2011-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810176452XA Active CN101731869B (en) | 2008-11-11 | 2008-11-11 | Rising handrail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101731869B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012073273A1 (en) * | 2010-11-30 | 2012-06-07 | 東海化成工業株式会社 | Armrest device |
| CN115486652B (en) * | 2022-11-05 | 2023-09-19 | 广州市弘锦科技有限公司 | Multidirectional adjusting armrest and seat |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2414679Y (en) * | 2000-02-25 | 2001-01-17 | 李清阳 | Chair armrest adjusting device |
| CN2481218Y (en) * | 2001-05-09 | 2002-03-13 | 李清阳 | Simple arm adjusting structure for office chair |
| CN2500185Y (en) * | 2001-10-19 | 2002-07-17 | 富锢有限公司 | Seat armrest structure capable of adjusting heightness and moving forward and backward |
| CN2872980Y (en) * | 2006-03-24 | 2007-02-28 | 铨兴化成股份有限公司 | Regulating type arm rest capable of automatic lifting |
| US7360839B1 (en) * | 2007-04-13 | 2008-04-22 | Chen Yung-Hua | Apparatus for adjusting an armrest of an office chair |
-
2008
- 2008-11-11 CN CN200810176452XA patent/CN101731869B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2414679Y (en) * | 2000-02-25 | 2001-01-17 | 李清阳 | Chair armrest adjusting device |
| CN2481218Y (en) * | 2001-05-09 | 2002-03-13 | 李清阳 | Simple arm adjusting structure for office chair |
| CN2500185Y (en) * | 2001-10-19 | 2002-07-17 | 富锢有限公司 | Seat armrest structure capable of adjusting heightness and moving forward and backward |
| CN2872980Y (en) * | 2006-03-24 | 2007-02-28 | 铨兴化成股份有限公司 | Regulating type arm rest capable of automatic lifting |
| US7360839B1 (en) * | 2007-04-13 | 2008-04-22 | Chen Yung-Hua | Apparatus for adjusting an armrest of an office chair |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101731869A (en) | 2010-06-16 |
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