CN204306436U - Chair tray torsion spring torque force adjusting mechanism - Google Patents
Chair tray torsion spring torque force adjusting mechanism Download PDFInfo
- Publication number
- CN204306436U CN204306436U CN201420831057.1U CN201420831057U CN204306436U CN 204306436 U CN204306436 U CN 204306436U CN 201420831057 U CN201420831057 U CN 201420831057U CN 204306436 U CN204306436 U CN 204306436U
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- CN
- China
- Prior art keywords
- torsion spring
- handle body
- worm screw
- adjusting mechanism
- force adjusting
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Abstract
The utility model discloses a kind of chair tray torsion spring torque force adjusting mechanism, comprise the pull bar that regulating handle, housing, turbine, torsion spring and one end and turbine link, the other end of described pull bar and torsion spring link, described regulating handle comprises worm screw and handle body, it is characterized in that: described housing is fixed with anti-rotation dish in worm screw through place; The part that described worm screw passes housing is hingedly connected with handle body that is deployable or that draw in, described anti-rotation dish is provided with the anti-rotation structure cooperatively interacted with the handle body under rounding state.The purpose of this utility model is to provide one to have self-locking performance, can not make the chair tray torque force adjusting mechanism of regulating handle generation bow tie.
Description
Technical field
The utility model relates to a kind of torque force adjusting mechanism, and more particularly, it relates to a kind of torsion spring torque force adjusting mechanism of chair tray.
Background technology
There is the chair of seat support elevating function, seat support reclining function and back tilting function, now at very common on the market.Usual this chair comprises the mid-game group for being connected with air pressure rod, the deep bid group of renovating and connecting for seat support for being connected with the chair back, connecting the deep bid group pivot with mid-game group, be connected renovate with the pivot of deep bid group on be usually provided with reduction torsion spring for resetting.Reduction torsion spring, in real life, after long-term use, can cause the torsion generation change to a certain extent of its torque spring.Usual this change is very tiny, but under the time effect accumulated over a long period, the size variation of torsion spring torsion can be caused more and more obvious, again due in prior art, the mechanism of most of chair tray not for regulating reset torsion spring torque force, chair will be caused after long-term use like this, hydraulic performance decline, result in trouble in many uses and constant.
The patent No. be 200920112491.3 Chinese patent disclose a kind of chair tray reset torsion spring torque force regulate mechanism, described torque force adjusting mechanism body comprises housing and is sheathed on the reduction torsion spring on chair tray pivot, described reduction torsion spring is other is provided with pull bar, one end of described pull bar is connected with one end of reduction torsion spring, the other end of the corresponding reduction torsion spring of described pull bar is male end, described torque force adjusting mechanism further comprises can with the turbine of pull bar male end screw-threaded engagement transmission and can with the worm screw of turbine engagement fit, described worm screw one end is connected with extension handle.Extending handle by rotating, driving worm screw to rotate, thus drive turbine to rotate, the rotation of turbine makes pull bar to carry out upper and lower motion, moving up and down by pull bar, pulls torsion spring, thus reach the tension of adjustment reduction torsion spring or loosen, thus reach the effect regulating torsion spring torque magnitude; But clearly, this structure also exists two defects: the length one, extending handle is oversize, unsightly, easily meets people; Two, while, the extension handle of this length, have impact on the compactedness of torsion spring torque force adjusting mechanism entirety; Three, this regulative mode is owing to being the cooperation by worm and gear, and pull bar pulls is torsion spring, torsion spring can produce a pulling force to pull bar, this pulling force just likely can cause the position of pull bar to be moved, if and the position one of pull bar is moved, so be inconjunction with turbine and worm and extend handle and pivotal phenomenon occurs, the generation of this phenomenon, the torsion of torsion spring will be made to can not get good adjustment.The performance of dealing with problems reduces, and the torsion even when torsion spring is excessive, makes whole device not reach the effect regulating torsion spring torsion between turbine and worm when sufficient lubrication.Because when artificial rotation extends handle, the torsion of torsion spring can be conditioned, and when user looses one's grip, torsion spring can restore again.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide one to have self-locking performance, can not make the chair tray torque force adjusting mechanism of regulating handle generation bow tie.
For achieving the above object, the utility model provides following technical scheme: a kind of chair tray torsion spring torque force adjusting mechanism, comprise the pull bar that regulating handle, housing, turbine, torsion spring and one end and turbine link, the other end of described pull bar and torsion spring link, described regulating handle comprises worm screw and handle body, and described housing is fixed with anti-rotation dish in worm screw through place; The part that described worm screw passes housing is hingedly connected with handle body that is deployable or that draw in, described anti-rotation dish is provided with the anti-rotation structure cooperatively interacted with the handle body under rounding state.
By adopting technique scheme, handle body is connected with worm screw, worm screw is driven to rotate together while can making rotary handle body, the rotation of worm screw has driven again the rotation of the turbine be mated, make to move with the pull bar of its interlock by the rotation of turbine, thus the torsion of torsion spring is changed, reach the effect regulating torsion spring torsion.Because anti-rotation dish is arranged on housing, so anti-rotation dish is fixing relative to the position of worm screw, when handle body is when rotating around hinged place, by being arranged on the anti-rotation respective outer side edges on handle body and anti-rotation dish, reach the function of a self-locking, thus reach one and prevent the pivotal effect of regulating handle.Handle body can rotate around hinged place, thus can reduce the length of whole regulating handle to a certain extent, thus volume reduces, and makes structure more have compactedness.
The utility model is set to further: described anti-rotation structure comprises the anti-rotation groove that anti-rotation dish is arranged and the positioning convex strip be arranged on handle body, and described positioning convex strip is arranged at handle body one end away from hinged place; Described positioning convex strip can fasten with anti-rotation groove when handle body draws in.
By adopting technique scheme, when handle body draws in around hinged place, turning groove fit by putting back on positioning convex strip and anti-rotation dish, reaching concrete one and preventing the pivotal function of regulating handle.This structure implements simple, and operating personnel are easy to left-hand seat, is convenient to follow-up maintenance.
The utility model is set to further: described worm screw is exposed to the outer end-grain cutting of housing at least one fixed pan, and described handle body can collapse to fixed pan bonded to each other.
By adopting technique scheme, when after handle body rotates around hinged place, positioning convex strip is engaged in anti-rotation groove time, the platform that this fixed pan can be laid as of handle body, makes the structural design of whole regulating handle more compact, reasonable.
The utility model is set to further: described fixed pan has two and is symmetrical arranged on the axis direction of worm screw, and described handle body can collapse to fixed pan bonded to each other.
By adopting technique scheme, describe one and have two handle bodies, provide user and can allow when using and rotating two handle bodies can condition on a straight line, facilitate the rotation of user, can make with the hands to rotate, reach comparatively labour-saving effect; The set-up mode that fixed pan is so simultaneously, decreases the material that worm screw is used, while getting a desired effect, decreases production cost.
The utility model is set to further: described handle body is articulated with the end face that worm screw passes shell one end.
By adopting technique scheme, make the length of handle body can be the longest, this longest handle body be when specifically using, and rotating can be more laborsaving when regulating torsion spring torsion.
Accompanying drawing explanation
Fig. 1 is the structure chart of the utility model chair tray torsion spring torque force adjusting mechanism embodiment;
Fig. 2 is that the utility model chair tray torsion spring torque force adjusting mechanism worm screw is in the structure chart of housing outer one end embodiment;
Fig. 3 is the structure chart of the anti-rotation dish of the utility model chair tray torsion spring torque force adjusting mechanism;
Fig. 4 is the structure chart of the utility model chair tray torsion spring torque force adjusting mechanism turbine and worm;
Fig. 5 is the structure chart of the utility model chair tray torsion spring torque force adjusting mechanism installation place.
In figure: 1, torque force adjusting mechanism body; 11, shell; 12, regulating handle; 121, handle body; 1211, positioning convex strip; 122, hinge; 123, worm screw; 124, fixed pan; 13, turbine; 14, anti-rotation dish; 141, anti-rotation groove; 2, pull bar; 3, torsion spring.
Detailed description of the invention
Referring to figs. 1 through Fig. 3, the utility model chair tray torsion spring 3 torque force adjusting mechanism embodiment is described further.
A kind of chair tray torsion spring 3 torque force adjusting mechanism as shown in Figure 1, comprises torque force adjusting mechanism body 1, shell 11, regulating handle 12 and turbine 13.Turbine 13 is connected torsion spring 3 pull bar 2 with one is connected, and by the external screw thread of pull bar 2 one end and the engaged transmission of turbine 13 screwed hole of centre, makes pull bar about 2 pull torsion spring 3, thus reaches the effect regulating torsion.Turbine 13 and worm screw 123 are linked, and shell 11 is stretched out in worm screw 123 one end.One end that worm screw 123 stretches out shell 11 axially the symmetrical two parallel planes that cut out as fixed pan 124.(symmetry here cuts just one, and preferred embodiment, be arranged so that overall structure has more attractive in appearance and compactedness because such, also can not be symmetry, arbitrary two planes can; Here two the parallel planes that are cut into are also only one preferred embodiment, also three, four etc. can be cut in the production process of reality, also can not be parallel between plane, here the circumference of such setting just in order to be evenly distributed in worm screw 123 at handle body 121, makes user can be more comfortable when rotation regulates torsion spring 3 torsion).Be exposed to worm screw 123 on the section of one end of housing, be also provided with location-plate, location-plate is welded in worm screw 123(welding here and is only one preferred embodiment, because it is simple to operate, be easy to realize, can not be also welding, location-plate also can be one-body molded with worm screw 123).
Handle body 121 as shown in Figure 2, it is exteriorly a quadrangular, to be connected with one end of worm screw 123 (quadrangular type handle body 121 here by hinge 122, be only one preferred embodiment, also can be other shape, triangular prism, pentagonal prism etc., here selecting quadrangular to be handle body 121 is fixed pans 124 because a side of quadrangular can be fitted, when handle body 121 rotates to anti-rotation duty, fixed pan 124 can be close to, thus reach and better save space, reduce the effect of volume).The end face of handle body 121 away from hinge 122 one end is also provided with the positioning convex strip 1211 of strip, the positioning convex strip 1211 of strip is arranged along worm screw 123 radial direction, this makes it possible to contact fully with the anti-rotation groove 141 on square rotary disk that (positioning convex strip 1211 is strip here, just one preferred embodiment, can be other set-up modes such as breakpoint type; Also can not arrange along worm screw 123 radial direction, only need to coordinate with the anti-rotation groove 141 on anti-rotation dish 14).
Anti-rotation dish 14 as shown in Figure 3, is the anti-rotation dish 14 of annular, is fixedly mounted on shell 11.The surface of anti-rotation dish 14 is provided with anti-rotation groove 141, here anti-rotation groove 141 is arranged in center radiation shape, in order to sufficient and fixing raised line coordinate that (anti-rotation dish 14 mode be fixed on shell 11 here has a lot, here adopting and be wholely set, also can be embodiments such as welding, be threaded).
When needs regulate torsion spring 3 torsion time; handle body 121 is launched by hinge 122; rotate as required again; regulate torsion spring 3 torsion; after the torsion being adjusted to needs; handle body 121 gathering is repositioned to fixing raised line be engaged on anti-rotation dish 14, namely completes a whole adjustment process, reach again anti-rotation effect simultaneously.
The above is preferred embodiment of the present utility model, under not departing from the prerequisite of the utility model principle to those skilled in the art, can also make some modification and improvement, and these also should be considered as this and use novel protection domain.
Claims (5)
1. a chair tray torsion spring torque force adjusting mechanism, comprise the pull bar that regulating handle, housing, turbine, torsion spring and one end and turbine link, the other end of described pull bar and torsion spring link, and described regulating handle comprises worm screw and handle body, it is characterized in that:
Described housing is fixed with anti-rotation dish in worm screw through place;
The part that described worm screw passes housing is hingedly connected with handle body that is deployable or that draw in, described anti-rotation dish is provided with the anti-rotation structure cooperatively interacted with the handle body under rounding state.
2. chair tray torsion spring torque force adjusting mechanism according to claim 1, is characterized in that:
Described anti-rotation structure comprises the anti-rotation groove that anti-rotation dish is arranged and the positioning convex strip be arranged on handle body, and described positioning convex strip is arranged at handle body one end away from hinged place;
Described positioning convex strip can fasten with anti-rotation groove when handle body draws in.
3. chair tray torsion spring torque force adjusting mechanism according to claim 1, is characterized in that:
Described worm screw is exposed to the outer end-grain cutting of housing at least one fixed pan, and described handle body can collapse to fixed pan bonded to each other.
4. chair tray torsion spring torque force adjusting mechanism according to claim 3, is characterized in that:
Described fixed pan has two and is symmetrical arranged on the axis direction of worm screw, and described handle body can collapse to fixed pan bonded to each other.
5., according to the chair tray torsion spring torque force adjusting mechanism in Claims 1-4 described in any, it is characterized in that:
Described handle body is articulated with the end face that worm screw passes shell one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420831057.1U CN204306436U (en) | 2014-12-24 | 2014-12-24 | Chair tray torsion spring torque force adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420831057.1U CN204306436U (en) | 2014-12-24 | 2014-12-24 | Chair tray torsion spring torque force adjusting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204306436U true CN204306436U (en) | 2015-05-06 |
Family
ID=53128778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420831057.1U Expired - Fee Related CN204306436U (en) | 2014-12-24 | 2014-12-24 | Chair tray torsion spring torque force adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204306436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351999A (en) * | 2016-09-12 | 2017-01-25 | 厦门美时美克空气净化有限公司 | Intelligent adjusting device and adjusting method for torsional spring moment |
-
2014
- 2014-12-24 CN CN201420831057.1U patent/CN204306436U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351999A (en) * | 2016-09-12 | 2017-01-25 | 厦门美时美克空气净化有限公司 | Intelligent adjusting device and adjusting method for torsional spring moment |
| CN106351999B (en) * | 2016-09-12 | 2018-06-29 | 厦门美时美克空气净化有限公司 | A kind of torsional spring torque intelligent regulating device and method of adjustment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20171224 |