US20070024100A1 - Adjustable armrest assembly - Google Patents
Adjustable armrest assembly Download PDFInfo
- Publication number
- US20070024100A1 US20070024100A1 US11/193,380 US19338005A US2007024100A1 US 20070024100 A1 US20070024100 A1 US 20070024100A1 US 19338005 A US19338005 A US 19338005A US 2007024100 A1 US2007024100 A1 US 2007024100A1
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- US
- United States
- Prior art keywords
- controlling part
- armrest assembly
- adjustable armrest
- control member
- supporting tube
- 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.)
- Abandoned
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- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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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
- 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
-
- 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
-
- 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
-
- 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
Definitions
- This invention generally relates to an armrest assembly, and more particularly to an adjustable armrest assembly.
- FIGS. 1 and 2 show a conventional adjustable armrest assembly 10 .
- the adjustable armrest assembly 10 comprises an L-shaped supporting member 12 , a vertical sleeve 14 , a lever body 16 , and an armrest 18 .
- the L-shaped supporting member 12 has a horizontal part 20 fixed on a chair (not shown), and a vertical part 22 extending upward from the proximal end of the horizontal part 20 and having a plurality of positioning grooves 24 formed thereon.
- the vertical sleeve 14 is slidably sleeved on the vertical part 22 and defines a space 26 for receiving the vertical part 22 .
- the vertical sleeve 14 has a plurality of limiting ribs 28 formed within the space 26 , and the limiting ribs 28 slidably contact the vertical part 22 so as to prevent wobbling of the vertical sleeve 14 relative to the vertical part 22 .
- the lever body 16 has an upper block portion 30 pivoted to the vertical sleeve 14 , an engaging portion 32 extending downward from the upper block portion 30 into the space 26 to releasably engage one of the positioning grooves 24 , and an operating portion 34 connected to the upper block portion 30 and exposed from the vertical sleeve 14 .
- the armrest 18 is disposed on the vertical sleeve 14 .
- the engaging portion 32 disengages from the positioning groove 24 and then selectively engages with any other positioning groove 24 such that the armrest 18 can be adjusted to a suitable and desired height.
- the engaging portion 32 may disengage from the selected positioning groove 24 due to an unexpected touch at the operating portion 34 , such that the user needs to reset the armrest 18 to the suitable height.
- the present invention provides an adjustable armrest assembly to overcome the above-mentioned problems.
- the present invention provides an adjustable armrest assembly, which comprises a supporting tube having a chamber and a plurality of positioning grooves formed within the chamber, and a height control member slidably engaged along the chamber of the supporting tube; wherein the height control member comprises a first controlling part having a first end defining a fixing slot and a second end for being connected to an armrest, and a second controlling part having a first end provided with a positioning block movably embedded in the fixing slot of the first controlling part.
- the second controlling part is coupled with the first controlling part and movable relative to the first controlling part between an engaging position and a disengaging position; wherein the positioning block is driven to eject from the fixing slot and engage with one of the positioning grooves while the second controlling part is moved to the engaging position, and the positioning block is driven to draw back into the fixing slot and disengage from each of the positioning grooves while the second controlling part is moved to the disengaging position.
- the adjustable armrest assembly further comprises a rotatable indicator, which is attached to the height control member and rotatable according to the sliding position of the height control member relative to the supporting tube whereby showing the height of the armrest relative to the supporting tube.
- FIGS. 1 and 2 show a conventional adjustable armrest assembly.
- FIG. 3 is an exploded view of an adjustable armrest assembly according to one embodiment of the present invention.
- FIG. 4 is a perspective view of the guiding frame of the supporting tube according to the present invention.
- FIG. 5 is a cross-sectional view of the adjustable armrest assembly according to the present invention, in which the second controlling part is moved to an engaging position.
- FIG. 6 is a cross-sectional view of the adjustable armrest assembly according to the present invention, in which the second controlling part is moved to a disengaging position.
- FIG. 7 is another cross-sectional view of the adjustable armrest assembly according to the present invention.
- FIG. 3 is an exploded view of an adjustable armrest assembly 100 according to one embodiment of the present invention.
- the armrest assembly 100 comprises a supporting tube 102 , a height control member 104 and a housing 106 .
- the supporting tube 102 is fixed on one side of a chair (not shown) and defines a chamber 108 for receiving the height control member 104 .
- the height control member 104 is slidably engaged along the chamber 108 of the supporting tube 102 .
- the housing 106 houses the supporting tube 102 and the height control member 104 , and has an opening 109 a and an opening 109 b respectively formed on two opposite sides.
- the housing 106 and the height control member 104 are slidable together relative to the supporting tube 102 .
- the supporting tube 102 has a guiding frame 110 fixed on the inner wall 108 a of the chamber 108 for guiding the height control member 104 into the chamber 108 .
- the guiding frame 110 has a plurality of positioning grooves 112 arranged in a row along one of its inner surfaces and a rack gear 114 provided along another one of its inner surfaces as shown in FIG. 4 .
- the guiding frame 110 further has a receiving slit 110 a formed thereof.
- the height control member 104 includes a first controlling part 116 and a second controlling part 118 coupled with the first controlling part 116 .
- the first controlling part 116 has a guide gear 120 , three transmission gears 122 , 124 , 126 , and a driving gear 128 , which are rotatably installed on the side 129 a through four fixed pins 130 a, 130 b, 130 c, 130 d and a rotatable pin 132 , respectively.
- the guide gear 120 is engaged with the rack gear 114 and rotatably travels along the rack gear 114 such that the height control member 104 is slidably engaged along the chamber 108 of the supporting tube 102 .
- a fixing element 134 is coupled to the four fixed pins 130 a, 130 b, 130 c, 130 d and the rotatable pin 132 and fixed to the side 129 a through two screws 136 such that the guide gear 120 , the three transmission gears 122 , 124 , 126 , and the driving gear 128 can be rotatably fixed between the fixing element 134 and the side 129 a of the first controlling part 116 .
- the fixed pins 130 a, 130 b, 130 c, 130 d are integrally formed on the side 129 a.
- the rotatable pin 132 is rotatably mounted on the side 129 a and engaged with the driving gear 128 , such that the rotatable pin 132 can rotate in accordance with the rotation of the driving gear 128 .
- the rotatable pin 132 passes through a hole 138 formed on the fixing element 134 and connected to a rotatable indicator 140 .
- the rotatable indicator 140 is disposed at the opening 109 a of the housing 106 and has several different numerals 142 marked around the surface 140 a.
- the supporting tube 102 further has a receiving slit 111 corresponding to the receiving slit 110 a of the guiding frame 110 for receiving the rotatable pin 132 .
- the first controlling part 116 has one end 116 a, which defines a fixing slot 144 and a receiving slot 146 across the fixing slot 144 .
- the first controlling part 116 further has one end 116 b, which is provided with a supporting plate 147 for being connected to an armrest (not shown).
- the supporting plate 147 has four fixing holes 147 a formed thereof and respectively corresponding to four screw holes 106 a formed on the housing 106 . Four screws (not show) can pass through the four fixing holes 147 a of the supporting plate 147 and screw into the four screw holes 106 a of the housing 106 , respectively, such that the first controlling part 116 can be firmly fixed to the housing 106 .
- the second controlling part 118 has one end 118 a, which includes a bent portion 148 and is provided with a positioning block 150 having an opening 150 a defined thereon.
- the bent portion 148 includes an upper segment 148 a, a lower segment 148 b, and a shifting segment 148 c therebetween, and passes through the opening 150 a such that the positioning block 150 can slide along the segment 148 a, 148 b and 148 c.
- the second controlling part 118 is coupled with the first controlling part 116 on the side 129 b, such that the positioning block 150 is embedded and movable horizontally in the fixing slot 144 while the bent portion 148 is positioned and movable vertically within the receiving slot 146 .
- the second controlling part 118 further has one end 118 b provided with an operating element 152 , and the operating element 152 is attached to the end 118 b of the second controlling part 118 while passing through the opening 109 b of the housing 106 .
- the first controlling part 116 has a groove 154 formed on the side 129 b, and the second controlling part 118 has a groove 156 formed corresponding to the groove 154 of the first controlling part 116 .
- the groove 154 of the first controlling part 116 and the groove 156 of the second controlling part 118 together define a spring chamber 158 for accommodating a spring 160 .
- the spring 160 applies an elastic force E to a side surface 156 a of second controlling part 118 such that the second controlling part 118 is moved to an engaging position, in which the bottom surface 118 d of the second controlling part 118 contacts and stops at the positioning block 150 .
- the bent portion 148 is moved downward and drives the positioning block 150 to the upper segment 148 a such that the positioning block 150 ejects from the fixing slot 144 and engages with one of the positioning grooves 112 .
- the operating element 152 is lifted upward by the user with an applying force F opposing the elastic force E such that the second controlling part 118 is moved to a disengaging position, in which the top surface 118 c of the second controlling part 118 contacts and stops at the bottom 147 b of the supporting plate 147 .
- the bent portion 148 is moved upward and drives the positioning block 150 to the lower segment 148 b such that the positioning block 150 draws back into the fixing slot 144 and disengages from the one of the positioning grooves 112 .
- the guide gear 120 can rotatably travel along the rack gear 114 (as shown in FIG. 7 ) such that the height control member 104 is movable relative to the supporting tube 102 ; that is, the armrest (not shown) is movable relative to the supporting tube 102 .
- the applying force F can be released such that the second controlling part 118 is returned to the engaging position by the elastic force E; meanwhile, the positioning block 150 ejects from the fixing slot 144 again and engages with a selected positioning groove 112 .
- the guide gear 120 is engaged with the first transmission gear 122 , the first transmission gear 122 is engaged with the second transmission gear 124 , and the second transmission gear 124 is engaged with the third transmission gear 126 .
- the third transmission gear 126 has a concentric pinion gear 127 integrally formed thereon and engaged with the driving gear 128 .
- the transmission gears 122 , 124 , 126 and the driving gear 128 rotate in accordance with the rotation of the guide gear 120 .
- the rotatable indicator 140 can rotate in accordance with the rotation of the guide gear 120 since it is connected to the rotatable pin 132 engaged with the driving gear 128 . Further, the peripheral surface around the opening 109 a of the housing 106 is marked with at least a sign, e.g. an arrow 162 as shown in FIG. 3 .
- the guide gear 120 travels along the rack gear 114 , that is, the height control member 104 is moved relative to the supporting tube 102 , the rotatable indicator 140 rotates at the opening 109 a in accordance with the rotation of the guide gear 120 such that the numerals 142 is moved relative to the arrow 162 .
- the position of the height control member 104 relative to the supporting tube 102 i.e. the height of the armrest (not shown) relative to the supporting tube 102
- the numerals 142 is pointed by the arrow 162 .
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- General Health & Medical Sciences (AREA)
- Seats For Vehicles (AREA)
Abstract
An adjustable armrest assembly comprises a supporting tube having a chamber and a plurality of positioning grooves formed within the chamber, and a height control member slidably engaged along the chamber of the supporting tube; the height control member is connected to a armrest and provided with a positioning block, wherein the positioning block can be selectively driven to disengage from or engage with any one of the positioning grooves such that the armrest can be adjusted and fixed to a desirable height.
Description
- 1. Field of the Invention
- This invention generally relates to an armrest assembly, and more particularly to an adjustable armrest assembly.
- 2. Description of the Related Art
-
FIGS. 1 and 2 show a conventionaladjustable armrest assembly 10. Theadjustable armrest assembly 10 comprises an L-shaped supportingmember 12, avertical sleeve 14, alever body 16, and anarmrest 18. - The L-shaped supporting
member 12 has ahorizontal part 20 fixed on a chair (not shown), and avertical part 22 extending upward from the proximal end of thehorizontal part 20 and having a plurality ofpositioning grooves 24 formed thereon. Thevertical sleeve 14 is slidably sleeved on thevertical part 22 and defines aspace 26 for receiving thevertical part 22. Thevertical sleeve 14 has a plurality of limitingribs 28 formed within thespace 26, and thelimiting ribs 28 slidably contact thevertical part 22 so as to prevent wobbling of thevertical sleeve 14 relative to thevertical part 22. Thelever body 16 has anupper block portion 30 pivoted to thevertical sleeve 14, anengaging portion 32 extending downward from theupper block portion 30 into thespace 26 to releasably engage one of thepositioning grooves 24, and anoperating portion 34 connected to theupper block portion 30 and exposed from thevertical sleeve 14. Thearmrest 18 is disposed on thevertical sleeve 14. - When the
operating portion 34 is lifted upward as shown inFIG. 2 , theengaging portion 32 disengages from thepositioning groove 24 and then selectively engages with anyother positioning groove 24 such that thearmrest 18 can be adjusted to a suitable and desired height. - However, the
engaging portion 32 may disengage from the selectedpositioning groove 24 due to an unexpected touch at theoperating portion 34, such that the user needs to reset thearmrest 18 to the suitable height. In addition, it is relatively inconvenient and laborious to operate and assemble thearmrest assembly 10. - Accordingly, the present invention provides an adjustable armrest assembly to overcome the above-mentioned problems.
- It is an object of the present invention to provide an adjustable armrest assembly, which can be conveniently operated and assembled.
- It is another object of the present invention to provide an adjustable armrest assembly, in which an armrest can be easily and quickly adjusted to a suitable and desired height.
- In order to achieve the above object, the present invention provides an adjustable armrest assembly, which comprises a supporting tube having a chamber and a plurality of positioning grooves formed within the chamber, and a height control member slidably engaged along the chamber of the supporting tube; wherein the height control member comprises a first controlling part having a first end defining a fixing slot and a second end for being connected to an armrest, and a second controlling part having a first end provided with a positioning block movably embedded in the fixing slot of the first controlling part.
- According to the adjustable armrest assembly of the present invention, the second controlling part is coupled with the first controlling part and movable relative to the first controlling part between an engaging position and a disengaging position; wherein the positioning block is driven to eject from the fixing slot and engage with one of the positioning grooves while the second controlling part is moved to the engaging position, and the positioning block is driven to draw back into the fixing slot and disengage from each of the positioning grooves while the second controlling part is moved to the disengaging position.
- The adjustable armrest assembly according to the present invention further comprises a rotatable indicator, which is attached to the height control member and rotatable according to the sliding position of the height control member relative to the supporting tube whereby showing the height of the armrest relative to the supporting tube.
- Other objects, advantages, and novel features of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
-
FIGS. 1 and 2 show a conventional adjustable armrest assembly. -
FIG. 3 is an exploded view of an adjustable armrest assembly according to one embodiment of the present invention. -
FIG. 4 is a perspective view of the guiding frame of the supporting tube according to the present invention. -
FIG. 5 is a cross-sectional view of the adjustable armrest assembly according to the present invention, in which the second controlling part is moved to an engaging position. -
FIG. 6 is a cross-sectional view of the adjustable armrest assembly according to the present invention, in which the second controlling part is moved to a disengaging position. -
FIG. 7 is another cross-sectional view of the adjustable armrest assembly according to the present invention. -
FIG. 3 is an exploded view of anadjustable armrest assembly 100 according to one embodiment of the present invention. Thearmrest assembly 100 comprises a supportingtube 102, aheight control member 104 and ahousing 106. The supportingtube 102 is fixed on one side of a chair (not shown) and defines achamber 108 for receiving theheight control member 104. Theheight control member 104 is slidably engaged along thechamber 108 of the supportingtube 102. Thehousing 106 houses the supportingtube 102 and theheight control member 104, and has an opening 109 a and an opening 109 b respectively formed on two opposite sides. In addition, thehousing 106 and theheight control member 104 are slidable together relative to the supportingtube 102. The supportingtube 102 has a guidingframe 110 fixed on theinner wall 108 a of thechamber 108 for guiding theheight control member 104 into thechamber 108. The guidingframe 110 has a plurality ofpositioning grooves 112 arranged in a row along one of its inner surfaces and arack gear 114 provided along another one of its inner surfaces as shown inFIG. 4 . The guidingframe 110 further has areceiving slit 110 a formed thereof. - The
height control member 104 includes a first controllingpart 116 and a second controllingpart 118 coupled with the first controllingpart 116. The first controllingpart 116 has aguide gear 120, threetransmission gears driving gear 128, which are rotatably installed on theside 129 a through four fixedpins rotatable pin 132, respectively. Theguide gear 120 is engaged with therack gear 114 and rotatably travels along therack gear 114 such that theheight control member 104 is slidably engaged along thechamber 108 of the supportingtube 102. Afixing element 134 is coupled to the fourfixed pins rotatable pin 132 and fixed to theside 129 a through twoscrews 136 such that theguide gear 120, the threetransmission gears driving gear 128 can be rotatably fixed between thefixing element 134 and theside 129 a of the first controllingpart 116. - The
fixed pins side 129 a. Therotatable pin 132 is rotatably mounted on theside 129 a and engaged with thedriving gear 128, such that therotatable pin 132 can rotate in accordance with the rotation of thedriving gear 128. Therotatable pin 132 passes through ahole 138 formed on thefixing element 134 and connected to arotatable indicator 140. Therotatable indicator 140 is disposed at theopening 109 a of thehousing 106 and has severaldifferent numerals 142 marked around thesurface 140 a. The supportingtube 102 further has a receivingslit 111 corresponding to thereceiving slit 110 a of the guidingframe 110 for receiving therotatable pin 132. - In addition, the first controlling
part 116 has oneend 116 a, which defines afixing slot 144 and areceiving slot 146 across thefixing slot 144. The first controllingpart 116 further has oneend 116 b, which is provided with a supportingplate 147 for being connected to an armrest (not shown). The supportingplate 147 has fourfixing holes 147 a formed thereof and respectively corresponding to fourscrew holes 106 a formed on thehousing 106. Four screws (not show) can pass through the fourfixing holes 147 a of the supportingplate 147 and screw into the fourscrew holes 106 a of thehousing 106, respectively, such that the first controllingpart 116 can be firmly fixed to thehousing 106. The second controllingpart 118 has oneend 118 a, which includes abent portion 148 and is provided with apositioning block 150 having anopening 150 a defined thereon. Thebent portion 148 includes anupper segment 148 a, alower segment 148 b, and ashifting segment 148 c therebetween, and passes through theopening 150 a such that thepositioning block 150 can slide along thesegment part 118 is coupled with the first controllingpart 116 on the side 129 b, such that thepositioning block 150 is embedded and movable horizontally in thefixing slot 144 while thebent portion 148 is positioned and movable vertically within thereceiving slot 146. The second controllingpart 118 further has oneend 118 b provided with anoperating element 152, and theoperating element 152 is attached to theend 118 b of the second controllingpart 118 while passing through the opening 109 b of thehousing 106. - The first controlling
part 116 has agroove 154 formed on the side 129 b, and the second controllingpart 118 has agroove 156 formed corresponding to thegroove 154 of the first controllingpart 116. Thegroove 154 of the first controllingpart 116 and thegroove 156 of the second controllingpart 118 together define aspring chamber 158 for accommodating aspring 160. - Now referring to
FIG. 5 , thespring 160 applies an elastic force E to aside surface 156 a of second controllingpart 118 such that the second controllingpart 118 is moved to an engaging position, in which thebottom surface 118 d of the second controllingpart 118 contacts and stops at thepositioning block 150. When the second controllingpart 118 is moved to the engaging position, thebent portion 148 is moved downward and drives thepositioning block 150 to theupper segment 148 a such that thepositioning block 150 ejects from thefixing slot 144 and engages with one of thepositioning grooves 112. - Now referring to
FIG. 6 , when the armrest (not shown) connected to the supportingplate 147 is required to be adjusted to a desired height relative to the supportingtube 102, theoperating element 152 is lifted upward by the user with an applying force F opposing the elastic force E such that the second controllingpart 118 is moved to a disengaging position, in which thetop surface 118 c of the second controllingpart 118 contacts and stops at thebottom 147 b of the supportingplate 147. When the second controllingpart 118 is moved to the disengaging position, thebent portion 148 is moved upward and drives thepositioning block 150 to thelower segment 148 b such that thepositioning block 150 draws back into thefixing slot 144 and disengages from the one of thepositioning grooves 112. When thepositioning block 150 disengages from the one of thepositioning grooves 112, theguide gear 120 can rotatably travel along the rack gear 114 (as shown inFIG. 7 ) such that theheight control member 104 is movable relative to the supportingtube 102; that is, the armrest (not shown) is movable relative to the supportingtube 102. When the armrest (not shown) is moved/adjusted to the desired height relative to the supportingtube 102, the applying force F can be released such that the secondcontrolling part 118 is returned to the engaging position by the elastic force E; meanwhile, thepositioning block 150 ejects from the fixingslot 144 again and engages with a selectedpositioning groove 112. - Now referring to
FIGS. 1 and 7 , theguide gear 120 is engaged with thefirst transmission gear 122, thefirst transmission gear 122 is engaged with thesecond transmission gear 124, and thesecond transmission gear 124 is engaged with thethird transmission gear 126. Thethird transmission gear 126 has aconcentric pinion gear 127 integrally formed thereon and engaged with thedriving gear 128. When thepositioning block 150 disengages from the one of thepositioning grooves 112, theguide gear 120 can rotatably travel along therack gear 114 and drive the transmission gears 122, 124, 126 and thedriving gear 128 to rotate simultaneously. In another word, the transmission gears 122, 124, 126 and thedriving gear 128 rotate in accordance with the rotation of theguide gear 120. As noted above, there are three transmission gears 122, 124, 126 in this embodiment. It should be appreciated that the number of the transmission gears mainly depends on the stroke of the adjustable height. The longer the stroke is, the more transmission gears are required. - According to the
armrest assembly 100 of the present invention, therotatable indicator 140 can rotate in accordance with the rotation of theguide gear 120 since it is connected to therotatable pin 132 engaged with thedriving gear 128. Further, the peripheral surface around the opening 109 a of thehousing 106 is marked with at least a sign, e.g. anarrow 162 as shown inFIG. 3 . When theguide gear 120 travels along therack gear 114, that is, theheight control member 104 is moved relative to the supportingtube 102, therotatable indicator 140 rotates at theopening 109 a in accordance with the rotation of theguide gear 120 such that thenumerals 142 is moved relative to thearrow 162. In this manner, the position of theheight control member 104 relative to the supportingtube 102, i.e. the height of the armrest (not shown) relative to the supportingtube 102, can be presented/indicated while thenumerals 142 is pointed by thearrow 162. - Although the invention has been explained in relation to its preferred embodiment, it is not used to limit the invention. It is to be understood that many other possible modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the invention as hereinafter claimed.
Claims (24)
1. An adjustable armrest assembly, comprising:
a supporting tube defining a chamber and having a plurality of positioning grooves formed within the chamber; and
a height control member slidably engaged along the chamber of the supporting tube, the height control member comprising:
a first controlling part having a first end defining a fixing slot and a second end for being connected to an armrest; and
a second controlling part coupled with the first controlling part and movable relative to the first controlling part between a first position and a second position, the second controlling part having a first end provided with a positioning block movably embedded in the fixing slot of the first controlling part;
wherein the positioning block is driven to eject from the fixing slot and engage with one of the positioning grooves while the second controlling part is moved to the first position; and
wherein the positioning block is driven to draw back into the fixing slot and disengage from each of the positioning grooves while the second controlling part is moved to the second position.
2. The adjustable armrest assembly as claimed in claim 1 , wherein the height control member further comprises a spring disposed between the first controlling part and the second controlling part.
3. The adjustable armrest assembly as claimed in claim 2 , wherein the spring applies an elastic force to the second controlling part such that the second controlling part is moved to the first position.
4. The adjustable armrest assembly as claimed in claim 3 , wherein the second controlling part further has a second end provided with an operating element, and the operating element is lifted by an external applying force opposing the elastic force such that the second controlling part is moved to the second position.
5. The adjustable armrest assembly as claimed in claim 2 , wherein the first controlling part and the second controlling part together define a spring chamber for accommodating the spring.
6. The adjustable armrest assembly as claimed in claim 1 , wherein the supporting tube further has a rack gear disposed along the chamber, and the first controlling part further has a guide gear rotatably installed thereof and engaged with the rack gear.
7. The adjustable armrest assembly as claimed in claim 6 , wherein the first controlling part further has a rotatable indicator coupled to the guide gear, and the rotatable indicator rotates in accordance with the rotation of the guide gear for indicating the height of the armrest relative to the supporting tube.
8. The adjustable armrest assembly as claimed in claim 7 , wherein the first controlling part further has a driving gear being coupled to the guide gear and rotating in accordance with the rotation of the guide gear, and the rotatable indicator is attached to the driving gear.
9. The adjustable armrest assembly as claimed in claim 8 , wherein the first controlling part further has at least one transmission gear engaged between the driving gear and the guide gear.
10. The adjustable armrest assembly as claimed in claim 7 , further comprising a housing for housing the supporting tube and the height control member, wherein the housing and the height control member are slidable together relative to the supporting tube.
11. The adjustable armrest assembly as claimed in claim 10 , wherein the housing has an opening defined thereon, and the rotatable indicator is disposed and rotates at the opening.
12. The adjustable armrest assembly as claimed in claim 1 , wherein the first controlling part further defines a receiving slot across the fixing slot, and the second controlling part further has a bent portion movable within the receiving slot of the first controlling part for driving the positioning block.
13. The adjustable armrest assembly as claimed in claim 11 , wherein the positioning block defines an opening, and the bent portion passes through the opening of the positioning block.
14. An adjustable armrest assembly, comprising:
a supporting tube defining a chamber and having a plurality of positioning grooves formed within the chamber; and
a height control member slidably engaged along the chamber of the supporting tube, the height control member comprising:
a first controlling part connected to an armrest;
a second controlling part coupled with the first controlling part and movable relative to the first controlling part between a first position and a second position;
a spring coupled between the first controlling part and the second controlling part for applying an elastic force, wherein the second controlling part is moved to the first position by the elastic force and moved to the second position by an external applying force opposing the elastic force; and
a positioning block coupled to the second controlling part;
wherein the positioning block is driven to engage with one of the positioning grooves while the second controlling part is moved to the first position; and
wherein the positioning block is driven to disengage from each of the positioning grooves while the second controlling part is moved to the second position.
15. The adjustable armrest assembly as claimed in claim 14 , wherein the first controlling part and the second controlling part together define a spring chamber for accommodating the spring.
16. The adjustable armrest assembly as claimed in claim 14 , wherein the supporting tube further has a rack gear disposed along the chamber, and the first controlling part further has a guide gear rotatably installed thereof and engaged with the rack gear.
17. The adjustable armrest assembly as claimed in claim 16 , wherein the first controlling part further has a rotatable indicator coupled to the guide gear, and the rotatable indicator rotates in accordance with the rotation of the guide gear for indicating the height of the armrest relative to the supporting tube.
18. The adjustable armrest assembly as claimed in claim 17 , further comprising a housing for housing the supporting tube and the height control member, wherein the housing and the height control member are slidable together relative to the supporting tube.
19. The adjustable armrest assembly as claimed in claim 18 , wherein the housing has an opening defined thereon, and the rotatable indicator is disposed and rotates at the opening.
20. An adjustable armrest assembly, comprising:
a supporting tube defining a chamber and having a rack gear disposed along the chamber;
a height control member having a guide gear rotatably installed thereof and engaged with the rack gear such that the height control member is slidably engaged along the chamber;
an armrest coupled to the height control member; and
a rotatable indicator rotatably attached to the height control member, wherein the rotatable indicator is coupled to the guide gear and rotates in accordance with the rotation of the guide gear for indicating the height of the armrest relative to the supporting tube.
21. The adjustable armrest assembly as claimed in claim 20 , wherein the height control member further has a driving gear being coupled to the guide gear and rotating in accordance with the rotation of the guide gear, and the rotatable indicator is attached to the driving gear.
22. The adjustable armrest assembly as claimed in claim 21 , wherein the height control member further has at least one transmission gear engaged between the driving gear and the guide gear.
23. The adjustable armrest assembly as claimed in claim 20 , further comprising a housing for housing the supporting tube and the height control member, wherein the housing and the height control member are slidable together relative to the supporting tube.
24. The adjustable armrest assembly as claimed in claim 23 , wherein the housing has an opening defined thereon, and the rotatable indicator is disposed and rotates at the opening.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW094122674A TWI280110B (en) | 2005-07-05 | 2005-07-05 | Adjustable armrest assembly |
GB0514411A GB2428186B (en) | 2005-07-05 | 2005-07-13 | Adjustable armrest assembly |
US11/193,380 US20070024100A1 (en) | 2005-07-05 | 2005-08-01 | Adjustable armrest assembly |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW094122674A TWI280110B (en) | 2005-07-05 | 2005-07-05 | Adjustable armrest assembly |
GB0514411A GB2428186B (en) | 2005-07-05 | 2005-07-13 | Adjustable armrest assembly |
US11/193,380 US20070024100A1 (en) | 2005-07-05 | 2005-08-01 | Adjustable armrest assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070024100A1 true US20070024100A1 (en) | 2007-02-01 |
Family
ID=49956628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/193,380 Abandoned US20070024100A1 (en) | 2005-07-05 | 2005-08-01 | Adjustable armrest assembly |
Country Status (3)
Country | Link |
---|---|
US (1) | US20070024100A1 (en) |
GB (1) | GB2428186B (en) |
TW (1) | TWI280110B (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080224526A1 (en) * | 2007-03-16 | 2008-09-18 | Po-Chuan Tsai | Internally pulling type lift device for chair armrest |
US20080309140A1 (en) * | 2007-06-18 | 2008-12-18 | Hsueh-Yu Ho | Armrest adjusting device |
US20110248542A1 (en) * | 2010-04-13 | 2011-10-13 | Po-Chuan Tsai | Chair Armrest Assembly Having Adjustable Height |
US9004603B1 (en) * | 2014-03-30 | 2015-04-14 | Chih-Wei Wang | Armrest assembly for a chair |
US9307839B2 (en) * | 2012-12-31 | 2016-04-12 | Sava Cvek | Adjustable armrest |
US9616785B2 (en) * | 2014-01-09 | 2017-04-11 | PAC Seating Systems, Inc. | Infinitely vertically adjustable drop down armrest mechanism |
US9700139B2 (en) * | 2015-08-02 | 2017-07-11 | Dongguan Kentec Office Seating Co., Ltd. | Armrest structure for a chair |
US10660445B2 (en) * | 2018-10-24 | 2020-05-26 | Tien Ching Fang | Height adjustable chair armrest |
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US5769497A (en) * | 1997-04-04 | 1998-06-23 | Fusco Industrial Corporation | Arm support structure |
US5839786A (en) * | 1997-06-06 | 1998-11-24 | Stylex, Inc. | Adjustable armrest |
US6053579A (en) * | 1996-12-27 | 2000-04-25 | Haworth, Inc. | Height-Adjustable chair arm assembly having cam-type adjusting mechanism |
US6132001A (en) * | 2000-02-08 | 2000-10-17 | Su; Wen-Fa | Adjustment device for an arm of a chair |
US6283422B1 (en) * | 1998-12-15 | 2001-09-04 | Actuall B.V. | Drive for mechanical adjustment of profile parts, piece of furniture, profile part and method for manufacturing a profile part |
US6336680B1 (en) * | 2001-07-05 | 2002-01-08 | Ching-Yang Lee | Height-adjustment mechanism for armrest |
US6761410B2 (en) * | 2002-07-05 | 2004-07-13 | Ching-Yang Lee | Gear-controlled height-adjusting mechanism for armrest of office chair |
US6811224B2 (en) * | 2002-10-09 | 2004-11-02 | First Source Furniture Group Llc | Chair with adjustable arms and/or back |
US6974190B1 (en) * | 2005-03-17 | 2005-12-13 | Yu-Ching Hung | Armrest adjustment mechanism |
US6974189B2 (en) * | 2003-12-30 | 2005-12-13 | Hni Technologies Inc. | Vertically adjustable chair armrest |
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US5620233A (en) * | 1995-06-07 | 1997-04-15 | Jami, Inc. | Adjusting mechanism for selectively positioning chair components |
DE20108247U1 (en) * | 2001-05-16 | 2002-06-20 | Froli Kunststoffwerk Fromme H | Adjustment mechanism in particular for an armrest of a piece of seating furniture |
US6419323B1 (en) * | 2001-05-25 | 2002-07-16 | Jung-Hua Chu | Elevation mechanism for armchair armrest |
TW582242U (en) * | 2003-06-02 | 2004-04-01 | Fu Luong Hi Tech Co Ltd | Adjustable armrest of chair |
US6837545B1 (en) * | 2003-09-22 | 2005-01-04 | Hsueh Yu Ho | Chair arm with an adjustable height |
-
2005
- 2005-07-05 TW TW094122674A patent/TWI280110B/en not_active IP Right Cessation
- 2005-07-13 GB GB0514411A patent/GB2428186B/en not_active Expired - Fee Related
- 2005-08-01 US US11/193,380 patent/US20070024100A1/en not_active Abandoned
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US6053579A (en) * | 1996-12-27 | 2000-04-25 | Haworth, Inc. | Height-Adjustable chair arm assembly having cam-type adjusting mechanism |
US5769497A (en) * | 1997-04-04 | 1998-06-23 | Fusco Industrial Corporation | Arm support structure |
US5839786A (en) * | 1997-06-06 | 1998-11-24 | Stylex, Inc. | Adjustable armrest |
US6283422B1 (en) * | 1998-12-15 | 2001-09-04 | Actuall B.V. | Drive for mechanical adjustment of profile parts, piece of furniture, profile part and method for manufacturing a profile part |
US6132001A (en) * | 2000-02-08 | 2000-10-17 | Su; Wen-Fa | Adjustment device for an arm of a chair |
US6336680B1 (en) * | 2001-07-05 | 2002-01-08 | Ching-Yang Lee | Height-adjustment mechanism for armrest |
US6761410B2 (en) * | 2002-07-05 | 2004-07-13 | Ching-Yang Lee | Gear-controlled height-adjusting mechanism for armrest of office chair |
US6811224B2 (en) * | 2002-10-09 | 2004-11-02 | First Source Furniture Group Llc | Chair with adjustable arms and/or back |
US6974189B2 (en) * | 2003-12-30 | 2005-12-13 | Hni Technologies Inc. | Vertically adjustable chair armrest |
US6974190B1 (en) * | 2005-03-17 | 2005-12-13 | Yu-Ching Hung | Armrest adjustment mechanism |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080224526A1 (en) * | 2007-03-16 | 2008-09-18 | Po-Chuan Tsai | Internally pulling type lift device for chair armrest |
US7448687B2 (en) * | 2007-03-16 | 2008-11-11 | Po-Chuan Tsai | Internally pulling type lift device for chair armrest |
US20080309140A1 (en) * | 2007-06-18 | 2008-12-18 | Hsueh-Yu Ho | Armrest adjusting device |
US20110248542A1 (en) * | 2010-04-13 | 2011-10-13 | Po-Chuan Tsai | Chair Armrest Assembly Having Adjustable Height |
US8128172B2 (en) * | 2010-04-13 | 2012-03-06 | Po-Chuan Tsai | Chair armrest assembly having adjustable height |
US9307839B2 (en) * | 2012-12-31 | 2016-04-12 | Sava Cvek | Adjustable armrest |
US9616785B2 (en) * | 2014-01-09 | 2017-04-11 | PAC Seating Systems, Inc. | Infinitely vertically adjustable drop down armrest mechanism |
US9004603B1 (en) * | 2014-03-30 | 2015-04-14 | Chih-Wei Wang | Armrest assembly for a chair |
US9700139B2 (en) * | 2015-08-02 | 2017-07-11 | Dongguan Kentec Office Seating Co., Ltd. | Armrest structure for a chair |
US10660445B2 (en) * | 2018-10-24 | 2020-05-26 | Tien Ching Fang | Height adjustable chair armrest |
Also Published As
Publication number | Publication date |
---|---|
GB0514411D0 (en) | 2005-08-17 |
GB2428186B (en) | 2009-12-30 |
TWI280110B (en) | 2007-05-01 |
TW200701911A (en) | 2007-01-16 |
GB2428186A (en) | 2007-01-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CHAN, CHUN HUI, TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHAN, CHUN HUI;REEL/FRAME:016830/0942 Effective date: 20050705 Owner name: AQUALINK ENTERPRISES CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHAN, CHUN HUI;REEL/FRAME:016830/0942 Effective date: 20050705 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |