CN203835239U - Device for preventing tension spring from being twisted off - Google Patents
Device for preventing tension spring from being twisted off Download PDFInfo
- Publication number
- CN203835239U CN203835239U CN201420273775.1U CN201420273775U CN203835239U CN 203835239 U CN203835239 U CN 203835239U CN 201420273775 U CN201420273775 U CN 201420273775U CN 203835239 U CN203835239 U CN 203835239U
- Authority
- CN
- China
- Prior art keywords
- ratchet
- torsion spring
- installing plate
- bull stick
- pawl
- 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.)
- Expired - Fee Related
Links
Landscapes
- Springs (AREA)
Abstract
The utility model discloses a device for preventing a tension spring from being twisted off, and aims to provide a device for preventing the tension spring from being twisted off, which is convenient for operating and controlling a pawl. The technical scheme is characterized in that a ratchet which is linked with a torsional spring mounting groove is arranged on the other side of a mounting plate; an axle hole is coaxially formed in the ratchet, and passes through the torsional spring mounting groove; a rotary rod is hinged to one side, which is opposite to the ratchet, of the mounting plate; a pawl for fixedly clamping the ratchet is integrally arranged on the rotary rod; a reset torsional spring for embedding the pawl into the ratchet is arranged at one end, which is hinged to the mounting plate, of the rotary rod. The rotary rod is hinged to the mounting plate, and the pawl is embedded into a clamping groove of the ratchet through the reset torsional spring, thus the ratchet can be effectively prevented from rotating reversely through the pawl when the torsional spring is fractured since the pawl is always embedded into the clamping groove of the ratchet, and a roller shutter door is prevented from dropping suddenly. When the ratchet needs to be reversed to drive the roller shutter door to drop, the rotary rod is rotated to separate the pawl from the clamping groove of the ratchet, thereby bringing convenience to reversion of the ratchet and dropping of the roller shutter door.
Description
Technical field
The utility model relates to a kind of safety device, and more particularly, it relates to a kind of anti-torsion spring twist device.
Background technology
Safety device is limited or is prevented certain danger of machine by the structure function of self, or constrained motion speed, the hazards such as pressure.Application number is that 201220164106.1 Chinese patent discloses the anti-twist device of a kind of rolling door torsion spring, it comprises installing plate, is arranged on the torsion spring mounting groove of installing plate one side, installing plate opposite side is provided with ratchet, ratchet middle part has axis hole, axis hole communicates with torsion spring mounting groove, installing plate bottom arranges a groove, and a ratchet is set in groove, and ratchet is bolted in groove.Although this structure has certain safeguard function, but need to make rolling door fall ratchet reversion time, the use of ratchet is not but very convenient, because ratchet is arranged in the groove of installing plate bottom, and narrow space in groove, be unfavorable for the manipulation of ratchet, be not easy to control ratchet and make it depart from ratchet, therefore there is improved space.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of anti-torsion spring twist device of convenient manipulation ratchet.
For achieving the above object, the utility model provides following technical scheme: a kind of anti-torsion spring twist device, comprise installing plate and the torsion spring mounting groove that is arranged on installing plate one side, the opposite side of described installing plate is provided with the ratchet being connected with torsion spring mounting groove, described coaxial ratchet is provided with axis hole, described axis hole is through to torsion spring mounting groove, described installing plate is hinged with bull stick with respect to a side of ratchet, described bull stick is wholely set and is useful on the ratchet that fixes ratchet, and one end that described bull stick is articulated with installing plate is provided with the reduction torsion spring for ratchet being embedded to ratchet.
Described installing plate is provided with chute, and slippage is connected with movable slider in described chute, and described bull stick is with respect to hinged with the hinged other end and the movable slider of installing plate.
The curved structure setting of described bull stick.
Described shaft hole inner wall convexes with flat key, and described flat key and ratchet are integrative-structure setting.
Described ratchet convexes with fan-shaped platform with respect to the opposite side end face of installing plate.
A kind of anti-torsion spring twist device, comprise installing plate and the torsion spring mounting groove that is arranged on installing plate one side, the opposite side of described installing plate is provided with the ratchet being connected with torsion spring mounting groove, described coaxial ratchet is provided with axis hole, described axis hole is through to torsion spring mounting groove, described installing plate is hinged with bull stick with respect to a side of ratchet, and described bull stick is wholely set and is useful on the ratchet that fixes ratchet, and one end that described bull stick is articulated with installing plate is provided with the reduction torsion spring for ratchet being embedded to ratchet.By adopting technique scheme, bull stick is articulated with on installing plate, by reduction torsion spring, ratchet is embedded in the draw-in groove of ratchet, therefore in the time there is fracture in torsion spring, because ratchet embeds in the draw-in groove of ratchet all the time, therefore ratchet can effectively prevent the backwards rotation of ratchet, has the effect that stops rolling door to fall suddenly, is conducive to improve the usage safety performance of rolling door.In the time that needs make rolling door fall ratchet reversion, by rotating bull stick, just ratchet can be departed from the draw-in groove of ratchet, facilitate ratchet to realize reversion, be convenient to rolling door.
Brief description of the drawings
Fig. 1 is the perspective view of the anti-torsion spring twist device of the utility model;
Fig. 2 is the front view of the anti-torsion spring twist device of the utility model;
Fig. 3 is the lateral view of the anti-torsion spring twist device of the utility model.
Reference numeral: 1, installing plate; 11, torsion spring mounting groove; 12, ratchet; 121, fan-shaped platform; 13, axis hole; 131, flat key; 14, bull stick; 141, ratchet; 15, reduction torsion spring; 16, chute; 17, movable slider.
Detailed description of the invention
Referring to figs. 1 through Fig. 3, the anti-torsion spring twist device of the utility model embodiment is described further.
A kind of anti-torsion spring twist device, comprise installing plate 1 and the torsion spring mounting groove 11 that is arranged on installing plate 1 one sides, the opposite side of installing plate 1 is provided with the ratchet 12 being connected with torsion spring mounting groove 11, after ratchet 12 is fixedly connected with torsion spring mounting groove 11, its composite member can circumferentially rotate on installing plate 1, ratchet 12 is coaxially arranged with axis hole 13, axis hole 13 is through to torsion spring mounting groove 11, installing plate 1 is hinged with bull stick 14 with respect to a side of ratchet 12, and bull stick 14 can be realized by bolt and being hinged on installing plate 1, bull stick 14 is wholely set and is useful on the ratchet 141 that fixes ratchet 12, ratchet 141 is located on bull stick 14, the convenient manipulation that realizes ratchet 141 by rotating bull stick 14, one end that bull stick 14 is articulated with installing plate 1 is provided with the reduction torsion spring 15 for ratchet 141 being embedded to ratchet 12, reduction torsion spring 15 is sheathed on the bolt of hinged bull stick 14, and the one end that makes reduction torsion spring 15 is fixed on installing plate 1, the other end opposite side of bull stick 14 with respect to ratchet 12 of conflicting, therefore can ratchet 141 be embedded in the draw-in groove of ratchet 12 by the active force of reduction torsion spring 15.Bull stick 14 is articulated with on installing plate 1, by reduction torsion spring 15, ratchet 141 is embedded in the draw-in groove of ratchet 12, be that ratchet 12 is under non-inverted status, bull stick 14 rotates around bolt, can guarantee that ratchet 141 embeds all the time in the draw-in groove of ratchet 12 under the non-inverted status of ratchet 12, therefore in the time there is fracture in torsion spring, because ratchet 141 embeds in the draw-in groove of ratchet 12 all the time, therefore ratchet 141 can effectively prevent the backwards rotation of ratchet 12, there is the effect that stops rolling door to fall suddenly, be conducive to improve the usage safety performance of rolling door.In the time that needs make rolling door fall ratchet 12 reversions, by rotating bull stick 14, just ratchet 141 can be departed from the draw-in groove of ratchet 12, facilitate ratchet 12 to realize reversion, be convenient to rolling door.When being located in axle (not shown in FIG.) in axis hole 13 in the time driving ratchet 12 normal rotation, ratchet 141 is at the gear teeth outward thrust of ratchet 12, and under the inside pressure-acting of reduction torsion spring 15, great-jump-forward ground embeds in the draw-in groove of ratchet 12, therefore can avoid reduction torsion spring 15 in permanent compression or the state of stretching and lose Flexible Reset, being conducive to extend the application life of reduction torsion spring 15.Simultaneously owing to bull stick 14 directly can being hinged on installing plate 1, and ratchet 141 is wholely set with bull stick 14, and therefore installing plate 1 can the L-shaped structure setting of bending, avoids the bottom bending of installing plate 1 to be bathtub construction, is conducive to reduce production costs.
Installing plate 1 is provided with chute 16, the interior slippage of chute 16 is connected with movable slider 17, movable slider 17 is connected in chute 16, make movable slider 17 carry out slippage along chute 16 only in chute 16, and cannot in chute 16, come off, bull stick 14 with respect to the hinged other end of installing plate 1 and movable slider 17 by bolted splice.Only need just ratchet 141 can be overturn by manipulation bull stick 14, be convenient to ratchet 141 and depart from the draw-in groove of ratchet 12, conveniently realize the reversion of ratchet 12; Movable slider 17 can only be convenient to control in the interior slippage of chute 16 swing of bull stick 14 simultaneously, has spacing effect.
The curved structure setting of described bull stick 14.The curved structure setting of bull stick 14, and make the outside of bull stick 14 around ratchet 12, this structure takes full advantage of the space of installing plate 1, makes its more compact structure, is conducive to reduce the installation volume of anti-torsion spring twist device.
Described axis hole 13 inwalls convex with flat key 131, and described flat key 131 is integrative-structure setting with ratchet 12.Because axle is at ratchet 12 and torsion spring mounting groove 11 is interior all only bears circumferential torsion, and axle can not produce axial float in the course of the work, therefore only need guarantee that axle ratchet 12 and torsion spring mounting groove 11 in the time rotating all can rotate thereupon, flat key 131 is wholely set with ratchet 12, this structure can reduce the installation accuracy of axle, can conveniently install.
Described ratchet 12 convexes with fan-shaped platform 121 with respect to the opposite side end face of installing plate 1.Fan-shaped platform 121 can increase the contact area of ratchet 12 and axle, is conducive to improve its frictional force, and axle is in the time rotating, and the side of fan-shaped platform 121 has the tangential force of center roller, is conducive to improve the coupling mechanism force of ratchet 12 center rollers.
Claims (5)
1. an anti-torsion spring twist device, comprise installing plate and the torsion spring mounting groove that is arranged on installing plate one side, it is characterized in that: the opposite side of described installing plate is provided with the ratchet being connected with torsion spring mounting groove, described coaxial ratchet is provided with axis hole, described axis hole is through to torsion spring mounting groove, described installing plate is hinged with bull stick with respect to a side of ratchet, described bull stick is wholely set and is useful on the ratchet that fixes ratchet, and one end that described bull stick is articulated with installing plate is provided with the reduction torsion spring for ratchet being embedded to ratchet.
2. anti-torsion spring twist device according to claim 1, is characterized in that: described installing plate is provided with chute, and slippage is connected with movable slider in described chute, and described bull stick is with respect to hinged with the hinged other end and the movable slider of installing plate.
3. anti-torsion spring twist device according to claim 2, is characterized in that: the curved structure setting of described bull stick.
4. according to the anti-torsion spring twist device described in any one in claim 1-3, it is characterized in that: described shaft hole inner wall convexes with flat key, described flat key and ratchet are integrative-structure setting.
5. anti-torsion spring twist device according to claim 4, is characterized in that: described ratchet convexes with fan-shaped platform with respect to the opposite side end face of installing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420273775.1U CN203835239U (en) | 2014-05-24 | 2014-05-24 | Device for preventing tension spring from being twisted off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420273775.1U CN203835239U (en) | 2014-05-24 | 2014-05-24 | Device for preventing tension spring from being twisted off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835239U true CN203835239U (en) | 2014-09-17 |
Family
ID=51513096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420273775.1U Expired - Fee Related CN203835239U (en) | 2014-05-24 | 2014-05-24 | Device for preventing tension spring from being twisted off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835239U (en) |
-
2014
- 2014-05-24 CN CN201420273775.1U patent/CN203835239U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2014531542A5 (en) | ||
| MX354510B (en) | Electric cylinder system. | |
| WO2011154482A3 (en) | Assembly for a drug delivery device and drug delivery device | |
| GB201212798D0 (en) | Roller blind | |
| DE602006010181D1 (en) | BRAKE CONTROL MECHANISM WITH OVERLOAD PROTECTION | |
| CN103244578A (en) | Overrunning clutch | |
| CN203835239U (en) | Device for preventing tension spring from being twisted off | |
| CN204571429U (en) | Modified form berth lock | |
| CN206753431U (en) | It is easily installed reel and adjusts the rolling screen door of reel length | |
| ITTV20120183A1 (en) | BIDIRECTIONAL BRAKE | |
| WO2012034722A3 (en) | Drive device in a helical conveyor centrifuge | |
| CN203835233U (en) | Spring twist breakage preventing device | |
| CN201810194U (en) | Curtain transmission mechanism | |
| CN203835235U (en) | Torsional spring breakage preventing device | |
| CN202187629U (en) | Door lock delay protection mechanism | |
| CN201621216U (en) | Spring-force driven dual-drum driving device with low driving speed | |
| CN206928879U (en) | A kind of resistance gauge | |
| CN206753440U (en) | A kind of roller shutter | |
| CN103982070B (en) | A kind of panoramic table driver | |
| CN106948738B (en) | A kind of roller shutter | |
| CN102889322A (en) | Braking device | |
| CN203835222U (en) | Device for preventing torsional spring from being broken | |
| CN203627579U (en) | Torsion limiter | |
| CN205715351U (en) | A kind of jaw clutch automatically | |
| CN102287340B (en) | Energy storage device |
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 |
Granted publication date: 20140917 Termination date: 20150524 |
|
| EXPY | Termination of patent right or utility model |