CN108937288A - A kind of hand propelled height adjustment device for handrail - Google Patents
A kind of hand propelled height adjustment device for handrail Download PDFInfo
- Publication number
- CN108937288A CN108937288A CN201810611588.2A CN201810611588A CN108937288A CN 108937288 A CN108937288 A CN 108937288A CN 201810611588 A CN201810611588 A CN 201810611588A CN 108937288 A CN108937288 A CN 108937288A
- Authority
- CN
- China
- Prior art keywords
- support bar
- handrail
- card
- height adjustment
- adjustment device
- 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.)
- Pending
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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
Abstract
The invention discloses a kind of hand propelled height adjustment device for handrail, including supporting element and slipper bracket, supporting element includes fixed block, movable block, upper support bar and lower support bar, and the parallelogram sturcutre for constituting and fixed deformation can occurring successively is rotatably connected between the fixed block, movable block, upper support bar and lower support bar.Positioning mechanism controls the shape of supporting element under the action of slipper bracket and draught line, realizes the control to handrail height.The present invention is directly using pushing away the unlock and locking put to realize handrail height before and after stable parallelogram sturcutre and slipper bracket, meet user using when the actual conditions that will be manually placed on handrail, and ensure that user by changing the shape of supporting element come the phenomenon that being not in Caton during adjustable handrail height.
Description
Technical field
The present invention relates to the production of chair and manufacture field, specially a kind of hand propelled height adjustment for handrail is filled
It sets.
Background technique
Chair on the market is many kinds of at present, and different users also proposed more the performance and level of comfort of chair
High requirement.For the more humanized demand to adapt to different users, handrail product from original fixed design by
Step evolves into reversible or Liftable type.
Currently, application No. is the Chinese patents of CN201480004382.3 to disclose a kind of height adjustment dress for handrail
It sets, the height adjustment device includes the bar for handrail, and the bar is provided with interior grooves, for being connected to the inside of handrail
The adjustably and lockably flexible entrance of extending element, with the height of adjustable handrail, which is characterized in that prolong the inside
Stretching element includes stop pin assembly, which there are two for height adjustment can mutually move in a longitudinal direction
Dynamic component, and the stop pin assembly is set for the multiple latch recess mating with the locking pin of pre-bias
Pair on longitudinal direction of the latch recess by being separately positioned on the component on longitudinal direction, in aperture position
Neat opening portion or recess provide, and it is in the close position in the latch recess be detached from aligned position and pass through institute
It states the relative movement of component and is closed, and due to the opposite forming of the opening portion or recess, the locking of the pre-bias
Pin is forced out the latch recess, for by operation adjusting rod that the height adjustment of handrail is recessed to a selected locking
Slot, the adjusting rod are operably coupled on one in the component, for providing the shifting between the parts
It is dynamic.
In foregoing invention, when making locking pin be inclined by plane extrusion latch recess from the effect of leaf spring, pin bank is locked
The weight of the internal component of part, leaf spring drive the active force of locking pin and the active force of helical spring all to act on adjusting
On bar, so using multiple or encountering larger resistance regulation bar is easily damaged because stress is excessive.
In addition, if user does not pin adjusting rod in adjustment process completely, then the outside of stop pin assembly
The closing section of the opening portion of component and internal component cannot perfect complex, there is gap between the two and do not formed
The whole plane excessive by locking pin, then locking pin is under the drive of leaf spring in the mistake of out-of-flatness in adjustment height up and down
On degree face, it may appear that Caton influences the service life inside using effect and dipping control.
Summary of the invention
The purpose of the invention is to provide a kind of hand propelled height adjustment device for handrail, user passes through hand
The positioning mechanism in handrail tripper is pushed, after handle adjusting to desired height, handrail height can be relocked by loosing one's grip.
In adjustment process, the hand of user is not necessarily to leave the height that armrest straight connects the position direct feel received and distributed and adjustable handrail.
In order to achieve the above-mentioned object of the invention, the invention adopts the following technical scheme:
A kind of hand propelled height adjustment device for handrail, including supporting element and slipper bracket, supporting element include fixed block, work
Motion block, upper support bar and lower support bar, successively rotatable company between the fixed block, movable block, upper support bar and lower support bar
Connect the parallelogram sturcutre for constituting and fixed deformation can occurring；
The fixed block is equipped with the positioning mechanism for controlling upper support bar and lower support bar swing angle and locking, the positioning
Mechanism includes card-bit part and tooth socket；The card-bit part is rotatable to be fixed on upper support bar or lower support bar, card-bit part side with
The tooth socket fit of fixed block, upper support bar or lower support bar are equipped with the return unit of clamping tooth socket when resetting for card-bit part；Card
The position part other side is equipped with makes supporting element can be with the draught line of Free Transform, the draught line one for driving card-bit part to be detached from tooth socket
End is connected with card-bit part, and the draught line other end is connected with slipper bracket, and the slipper bracket is slidably connected with movable block.
For user in the height of adjustable handrail, hand holds sliding push plate sliding, and slip blade is led by what is be fixed thereon
Lead drives card-bit part.Card-bit part is pulled disengaging tooth socket, the supporting element of parallelogram sturcutre do not have card-bit part and tooth socket it
Between limitation, the relatively fixed block of upper and lower support rod can rotate.User can make exerting a force directly on slip blade
The relatively fixed block of upper lower support bar turns an angle, and achievees the purpose that adjustable handrail height.By handle adjusting to desired height
Afterwards, user unclamps slip blade, and card-bit part do not have the limitation of draught line, under the action of return unit with the tooth socket on fixed block
Mutually agree with, plays the role of locking handrail height.
Compared with prior art, using the hand propelled height adjustment device for handrail of above-mentioned technical proposal, have
It is following the utility model has the advantages that
1, it using the hand propelled height adjustment device for handrail of the invention, is directly put come reality using being pushed away before and after slipper bracket
The unlock and locking of existing handrail height, meet user using when the actual conditions that will be manually placed on handrail, use is more square
Just and it is humanized；
2, the hand propelled height adjustment device for handrail of the invention is using the deformation of parallelogram sturcutre come adjustable handrail
Highly, the supporting element for constituting parallelogram is not easy lifting structure of the damage to destroy handrail occur, is using handrail
It is more stable in the process.
3, the shape that change supporting element is passed through using the hand propelled height adjustment device for handrail of the invention, user
The phenomenon that being not in Caton during carrying out adjustable handrail height, handrail use is more smooth.
During directly opposite sliding occurs with movable block for slipper bracket, the structural instability of sliding, slipper bracket
The bad control of sliding distance.Preferably, slipper bracket includes pedestal and supporting plate, and base end face is mutually fixed with movable block, increases and slides
The stability of motivation structure.Multiple sliding slots are arranged at supporting plate bottom, and base top surface is equipped with the convex block matched with the sliding slot, sliding slot and convex
It is matched between block, limits the sliding distance of supporting plate.
When having adjusted handrail height and needing to restore lock state, in order to guarantee that return unit and supporting plate can be returned to smoothly
Initial position, it is preferred that the slipper bracket further includes the spring resetted for supporting plate, and the spring is located at the recessed of base top surface
In slot, spring one end abuts the preceding jacking block of base top surface, and the other end abuts the rear jacking block of supporting plate bottom surface, and spring can enhance reset
The reply effect of part and supporting plate.
In order to control the rotation angle of upper and lower support rod, guarantee the structural integrity of supporting element, it is preferred that the movable block
The limiting slot for limiting supporting element rotation angle, limiting slot are equipped with upper support bar and lower support bar rotation junction respectively
Limit the minimum and extreme higher position of handrail.
In order to control the rotation angle of upper and lower support rod, guarantee the structural integrity of supporting element, the fixed block, which is equipped with, to be used
In the limit hole and spacer pin of limitation supporting element rotation angle, the spacer pin is arranged in limit hole, limit hole and spacer pin
It matches and limits the minimum and extreme higher position of handrail.
In order to protect draught line that draught line is enable preferably to play traction supporting plate and card-bit part, it is preferred that the pedestal
Equipped with guiding piece, the draught line is movable to be arranged in casing, and the draught line is fixed on card-bit part by connector rotation
On, draught line is connected one end with supporting plate across guiding piece；Described sleeve pipe one end is fixed on upper support bar, the other end and guiding piece
Side abuts against or fixes.
Preferably, the draught line is brake cable.
Preferably, the return unit is torsional spring.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the present invention for the hand propelled height adjustment device embodiment of handrail；
Fig. 2 is left view of the present invention for the hand propelled height adjustment device of handrail；
Fig. 3 is the enlarged drawing in Fig. 2 at A；
Fig. 4 is the structural schematic diagram of supporting element in the present embodiment；
Fig. 5 is the structural schematic diagram of slipper bracket in the present embodiment；
Fig. 6 is the structural schematic diagram of draught line in the present embodiment；
Fig. 7 (a)-(b) is the state diagram that handrail is in high and low position in the present embodiment.
Appended drawing reference: 10, supporting element；11, fixed block；111, tooth socket；112, limit hole；113, spacer pin；12, movable
Block；121, limiting slot；13 upper support bars；14, lower support bar；20, card-bit part；30, draught line；31, casing；32, connector；
40, return unit；50, slipper bracket；51, pedestal；511, convex block；Jacking block before 512；513, guiding piece；52, supporting plate；521, sliding slot；
522, rear jacking block；53, spring.
Specific embodiment
The present invention is described further with reference to the accompanying drawing.
The hand propelled height adjustment device of handrail, including supporting element 10 and slipper bracket 50 are used for as shown in Fig. 1 to 7,
Supporting element 10 includes fixed block 11, movable block 12, upper support bar 13 and lower support bar 14.Fixed block 11, movable block 12, upper support
The parallelogram sturcutre for constituting and fixed deformation can occurring, fixed block 11 are successively rotatably connected between bar 13 and lower support bar 14
Equipped with the positioning mechanism for controlling upper support bar 13 and lower support bar 14 swing angle and locking.Positioning mechanism includes card-bit part
20 and tooth socket 111, card-bit part 20 is rotatable to be fixed on upper support bar 13 or lower support bar 14,20 side of card-bit part and fixed block
11 tooth socket 111 cooperates, and clamping tooth socket 111 answers when upper support bar 13 or lower support bar 14 are equipped with for the reset of card-bit part 20
Position part 40.20 other side of card-bit part is equipped with makes supporting element 10 can be with Free Transform for driving card-bit part 20 to be detached from tooth socket 111
Draught line 30.30 one end of draught line is connected with card-bit part 20, and the other end is connected with slipper bracket 50, slipper bracket 50 and movable block
12 are slidably connected.
As shown in Fig. 1, Fig. 1 and Fig. 3, dash area is that card-bit part 20 is whole in Fig. 3.The present invention is used for the hand propelled of handrail
Height adjustment device is driving card-bit part 20 by draught line 30 by slipper bracket 50, makes card-bit part 20 from the tooth of fixed block 11
It is detached on slot 111.Between card-bit part 20 and fixed block 11 there is no limit, upper support bar 13 in support frame, lower support bar 14,
The deformation that the parallelogram sturcutre that fixed block 11 and movable block 12 are constituted can be fixed.Wherein, fixed block 11 usually connects
It connects on the seat of accessory or office chair, and outward and is protruded outward on every side of unshowned chair seat, as
As apparent to those skilled in the art.According to the actual use situation of handrail and the normal use of user
Posture, the front for the user that definition is sitting on chair in the present embodiment are " preceding ", and back and rear are " rear ".
After supporting element 10 is unlocked, user adjusts desired height by can directly move arm rest skin,
Journey user directly adjust height excessively in, slipper bracket 50 always stress make card-bit part 20 and tooth socket 111 disengaging
State.The height of movable block 12 directly determines the actual height that handrail uses, band of the upper and lower support rod 13,14 in movable block 12
Relatively fixed block 11 rotates under dynamic, as shown in figure 4, since supporting element 10 is parallelogram sturcutre and the deformation of this structure
Fixed and fixed block 11 is fixed in actual production and in, so no matter movable block 12 adjusts what height, activity
The direction of block 12 will not all change, and ensure that handrail, all holding levels will not run-off the straight during adjusting height.
After handle adjusting to desired height, slipper bracket 50 need to be only unclamped.Card-bit part 20 be not towed line 30
Pulling force, and card can play the role of lock support part 10, relock in tooth socket 111 again under the action of return unit 40
The height of handrail.As shown in fig. 7, (a) and (b) is the state diagram of two height of hand propelled height adjustment mechanism of the present invention.?
In the embodiment of the present invention, return unit 40 preferentially selects torsional spring.
When the opposite process slided directly occurs with movable block 12 for slipper bracket 50, without other constraint conditions, user
The distance of sliding cannot be grasped well.Therefore as in Fig. 5, slipper bracket 50 includes pedestal 51 and supporting plate 52, bottom in the present embodiment
51 bottom surfaces of seat are fixed with 12 phase of movable block, increase the stability of sliding equipment.Multiple sliding slots 521, pedestal 51 are arranged at 52 bottom of supporting plate
Top surface is equipped with the convex block 511 matched with sliding slot 521, matches between sliding slot 521 and convex block 511, limits the sliding of supporting plate 52
Distance guarantees that card-bit part 20 can smoothly be detached from detent slot 111.
When supporting plate 52 slide through draught line 30 with respect to pedestal 51 and card-bit part 20 is driven to take off power tooth socket 111, reset
Part 40 resets card-bit part 20 to drive supporting plate 52 to return to original initial position by draught line 30, but due to supporting plate 52
With the effect between pedestal 51, the situation not strong there may be dynamics of return unit 40.It therefore can also include using in slipper bracket 50
In the spring 53 that supporting plate 52 resets, spring 53 is located in the groove of 51 top surface of pedestal, and 53 one end of spring abuts 51 top surface of pedestal
Preceding jacking block 512, the other end abut in the rear jacking block 522 of 52 bottom surface of supporting plate.
When unlocking height adjustment device, supporting plate 52 move forward pedestal 51 it is fixed, rear jacking block 522 with supporting plate 52 to
Preceding movement, distance becomes smaller between preceding jacking block 512 and rear jacking block 522, and deformation occurs for spring 53.When height adjustment to be relocked fills
Setting is, user unclamps supporting plate 52, and supporting plate 52 is pulled the pulling force of line 30, the also active force by spring 53 incessantly at this time.
During locking, the card-bit part 20 and supporting plate 52 of height adjustment device all receive the active force for reset respectively.
The supporting element 10 of parallelogram sturcutre can rotate biggish angle, but in actual handrail production, in order to
Ensure the practicability and persistence of handrail, the adjustable height of handrail is controlled in a certain range.In the present embodiment, movable
Block 12 rotates junction with upper support bar 13 and lower support bar 14 respectively and is equipped with the limit for rotating angle for limiting supporting element 10
Position slot 121, limiting slot 121 limit the minimum and extreme higher position of handrail when upper and lower support rod 13,14 rotates family's angle.
In addition, limit hole 112 can also be arranged on fixed block 11 in order to preferably limit the activity point of view of supporting element 10
With spacer pin 113, spacer pin 113 is arranged in limit hole 112, identical as limiting slot 121,113 phase of limit hole 112 and spacer pin
Cooperation, which also plays, limits the angle that upper and lower support rod 13,14 rotates, and protects the effect of 10 structure of supporting element.
In order to protect draught line 30 that draught line 30 is enable preferably to play traction supporting plate 52 and card-bit part 20, such as Fig. 5 and
Pedestal 51 shown in Fig. 6 is equipped with guiding piece 513, and draught line 30 is movable to be arranged in casing 31, and draught line 30 passes through connector 32
Rotation is fixed on card-bit part 20, and draught line 30 is connected one end with supporting plate 52 across guiding piece 513；31 one end of casing is fixed on
On support rod 13, the other end is abutted against or is fixed with 513 side of guiding piece.Draught line 30 passes in and out in casing 31 in stress,
Casing 31 plays the role of fixed and protects draught line 30.According to foregoing description and purpose, brake cable is as draught line 30
Preferable selection.
The above makes the preferred embodiment of the present invention, does not depart from this hair for those of ordinary skill in the art
Under the premise of bright principle, several variations and modifications can also be made, these also should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of hand propelled height adjustment device for handrail, it is characterised in that: including supporting element (10) and slipper bracket
(50),
The supporting element includes fixed block (11), movable block (12), upper support bar (13) and lower support bar (14), the fixed block
(11), composition is successively rotatably connected between movable block (12), upper support bar (13) and lower support bar (14) can occur fixed shape
The parallelogram sturcutre of change；
The fixed block (11) is equipped with the positioning for controlling upper support bar (13) and lower support bar (14) swing angle and locking
Mechanism, the positioning mechanism include card-bit part (20) and tooth socket (111)；The card-bit part (20) is rotatable to be fixed on upper support bar
(13) or on lower support bar (14), the tooth socket (111) of card-bit part (20) side and fixed block (11) cooperates, upper support bar (13) or
Lower support bar (14) is equipped with the return unit (40) of clamping tooth socket (111) when resetting for card-bit part (20)；Card-bit part (20) is another
Side is equipped with keeps supporting element (10) described to lead with the draught line (30) of Free Transform for driving card-bit part (20) to be detached from tooth socket
Lead (30) one end is connected with card-bit part (20), and draught line (30) other end is connected with slipper bracket (50), the slipper bracket
(50) it is slidably connected with movable block (12).
2. the hand propelled height adjustment device according to claim 1 for handrail, it is characterised in that: the slipper bracket
It (50) include pedestal (51) and supporting plate (52), pedestal (51) bottom surface is mutually fixed with movable block (12), supporting plate (52) bottom
Portion has multiple sliding slots (521), and pedestal (51) top surface is equipped with the convex block (511) matched with the sliding slot (521).
3. the hand propelled height adjustment device according to claim 2 for handrail, it is characterised in that: the slipper bracket
It (50) further include the spring (53) resetted for supporting plate (52), the spring (53) is located in the groove of pedestal (51) top surface, bullet
Spring (53) one end abuts the preceding jacking block (512) of pedestal (51) top surface, and the other end abuts the rear jacking block (522) of supporting plate (52) bottom surface.
4. the hand propelled height adjustment device according to claim 1 for handrail, it is characterised in that: the movable block
(12) it is equipped with respectively with upper support bar (13) and lower support bar (14) rotation junction for limiting supporting element (10) rotation angle
The limiting slot (121) of degree.
5. the hand propelled height adjustment device according to claim 1 for handrail, it is characterised in that: the fixed block
(11) limit hole (112) and spacer pin (113) for limiting supporting element (10) rotation angle, the spacer pin are equipped with
(113) it is arranged in limit hole (112).
6. the hand propelled height adjustment device according to claim 2 for handrail, it is characterised in that: the pedestal (51)
Equipped with guiding piece (513), the draught line (30) is movable to be arranged in casing (31), and the draught line (30) passes through connector
(32) rotation is fixed on card-bit part (20), and draught line (30) is connected one end with supporting plate (52) across guiding piece (513)；The set
Pipe (31) one end is fixed on upper support bar (13), and the other end is abutted against or fixed with guiding piece (513) side.
7. the hand propelled height adjustment device according to claim 6 for handrail, it is characterised in that: the draught line
It (30) is brake cable.
8. the hand propelled height adjustment device according to claim 1 for handrail, it is characterised in that: the return unit
It (40) is torsional spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810611588.2A CN108937288A (en) | 2018-06-14 | 2018-06-14 | A kind of hand propelled height adjustment device for handrail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810611588.2A CN108937288A (en) | 2018-06-14 | 2018-06-14 | A kind of hand propelled height adjustment device for handrail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108937288A true CN108937288A (en) | 2018-12-07 |
Family
ID=64488726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810611588.2A Pending CN108937288A (en) | 2018-06-14 | 2018-06-14 | A kind of hand propelled height adjustment device for handrail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108937288A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113518607A (en) * | 2019-01-21 | 2021-10-19 | 博卡医疗联合股份有限公司 | Height-adjustable armrest of medical chair |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1671317A (en) * | 2002-07-23 | 2005-09-21 | 株式会社冈村制作所 | Chair |
| US20060226691A1 (en) * | 2005-04-08 | 2006-10-12 | Steelcase Development Corporation | Armrest with height adjustment mechanism |
| CN101835407A (en) * | 2007-08-23 | 2010-09-15 | 赫尔曼米勒有限公司 | Adjustable armrest and method for the use thereof |
| CN104661567A (en) * | 2012-09-20 | 2015-05-27 | 斯迪尔科斯公司 | Chair arm assembly |
| CN204561520U (en) * | 2015-04-27 | 2015-08-19 | 李占巨 | A kind of armrests rotated freely |
| CN206026563U (en) * | 2016-08-31 | 2017-03-22 | 广州华轮堂医疗器械有限公司 | Wheelchair seat that high angle is adjustable |
-
2018
- 2018-06-14 CN CN201810611588.2A patent/CN108937288A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1671317A (en) * | 2002-07-23 | 2005-09-21 | 株式会社冈村制作所 | Chair |
| US20060226691A1 (en) * | 2005-04-08 | 2006-10-12 | Steelcase Development Corporation | Armrest with height adjustment mechanism |
| CN101835407A (en) * | 2007-08-23 | 2010-09-15 | 赫尔曼米勒有限公司 | Adjustable armrest and method for the use thereof |
| CN104661567A (en) * | 2012-09-20 | 2015-05-27 | 斯迪尔科斯公司 | Chair arm assembly |
| CN204561520U (en) * | 2015-04-27 | 2015-08-19 | 李占巨 | A kind of armrests rotated freely |
| CN206026563U (en) * | 2016-08-31 | 2017-03-22 | 广州华轮堂医疗器械有限公司 | Wheelchair seat that high angle is adjustable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113518607A (en) * | 2019-01-21 | 2021-10-19 | 博卡医疗联合股份有限公司 | Height-adjustable armrest of medical chair |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20181207 |