CN203835222U - Device for preventing torsional spring from being broken - Google Patents
Device for preventing torsional spring from being broken Download PDFInfo
- Publication number
- CN203835222U CN203835222U CN201420273908.5U CN201420273908U CN203835222U CN 203835222 U CN203835222 U CN 203835222U CN 201420273908 U CN201420273908 U CN 201420273908U CN 203835222 U CN203835222 U CN 203835222U
- Authority
- CN
- China
- Prior art keywords
- ratchet
- installing plate
- single direction
- torsion spring
- direction ratchet
- 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
Abstract
The utility model discloses a device for preventing a torsional spring from being broken, and aims to provide a device for preventing the torsional spring from being broken, which prevents a pawl from losing resetting elasticity. The technical scheme is characterized in that a one-way 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 one-way ratchet, and passes through the torsional spring mounting groove; a pawl for fixedly clamping the one-way ratchet is hinged to the mounting plate; one side of the pawl comprises a claw for being embedded into the one-way ratchet; a pull block project on the other side of the pawl; the mounting plate is provided with a tension spring for pulling the pull block. When a mandrel inserted into the axle hole is used for driving the one-way ratchet to rotate normally, the pawl is embedded into a clamping groove of the one-way ratchet in a jumping way under the action of the tension spring, thereby preventing the tension spring from losing the resetting elasticity by keeping in a permanent compressed or stretched state, and prolonging the service life of the tension spring.
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 breaking 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 the use of ratchet is not very effective, due to ratchet ratchet of conflicting all the time in the time rotating, and ratchet compressed for a long time can make its lose Flexible Reset, therefore in case of emergency ratchet cannot eject and snap in the groove of ratchet and has an accident, and exists larger potential safety hazard.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of anti-torsion spring breaking device of avoiding ratchet to lose Flexible Reset.
For achieving the above object, the utility model provides following technical scheme: a kind of anti-torsion spring breaking 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 single direction ratchet being connected with torsion spring mounting groove, described single direction ratchet is coaxially arranged with axis hole, described axis hole is through to torsion spring mounting groove, described installing plate is hinged with the ratchet for fixing single direction ratchet, one side of described ratchet includes for being embedded the claw into single direction ratchet, the opposite side of described ratchet convexes with pulling block, described installing plate is provided with the extension spring for lifting described pulling block.
Described installing plate is provided with chute, and described chute is slidably connected and is useful on the movable slider of upset ratchet, and described movable slider contacts at the side of pulling block with respect to claw.
Described shaft hole inner wall convexes with flat key, and described flat key and single direction ratchet are integrative-structure setting.
Described single direction ratchet convexes with fan-shaped platform with respect to the opposite side end face of installing plate.
A kind of anti-torsion spring breaking 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 single direction ratchet being connected with torsion spring mounting groove, described single direction ratchet is coaxially arranged with axis hole, described axis hole is through to torsion spring mounting groove, described installing plate is hinged with the ratchet for fixing single direction ratchet, one side of described ratchet includes for being embedded the claw into single direction ratchet, the opposite side of described ratchet convexes with pulling block, and described installing plate is provided with the extension spring for lifting described pulling block.By adopting technique scheme, ratchet is articulated with on installing plate, pull the pulling block on ratchet by the extension spring on installing plate, claw is embedded in the draw-in groove of single direction ratchet, therefore in the time that fracture occurs torsion spring, because claw embeds in the draw-in groove of single direction ratchet all the time, therefore ratchet can effectively prevent the backwards rotation of single direction ratchet, there is the effect that stops rolling door to fall suddenly, be conducive to improve the usage safety performance of rolling door.And when being located in axle in axis hole in the time driving single direction ratchet normal rotation, in the draw-in groove of ratchet embedding single direction ratchet of great-jump-forward under the effect of extension spring, therefore can avoid extension spring in permanent compression or the state of stretching and lose Flexible Reset, being conducive to extend the application life of extension spring.
Brief description of the drawings
Fig. 1 is the structural representation of the anti-torsion spring breaking device of the utility model;
Fig. 2 is the lateral view of the anti-torsion spring breaking device of the utility model.
Reference numeral: 1, installing plate; 11, torsion spring mounting groove; 12, single direction ratchet; 121, fan-shaped platform; 13, axis hole; 131, flat key; 14, ratchet; 141, claw; 142, pulling block; 15, extension spring; 16, chute; 17, movable slider.
Detailed description of the invention
With reference to Fig. 1, Fig. 2, the anti-torsion spring breaking device of the utility model embodiment is described further.
A kind of anti-torsion spring breaking 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 single direction ratchet 12 being connected with torsion spring mounting groove 11, after single direction ratchet 12 is fixedly connected with torsion spring mounting groove 11, its composite member can circumferentially rotate on installing plate 1, single direction 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 the ratchet 14 for fixing single direction ratchet 12, one side of ratchet 14 includes for being embedded the claw 141 into single direction ratchet 12, the opposite side of ratchet 14 convexes with pulling block 142, installing plate 1 is provided with the extension spring 15 for lifting pulling block 142 on ratchet 14, active force by extension spring 15 is embedded claw 141 in the draw-in groove of single direction ratchet 12.Ratchet 14 is articulated with on installing plate 1, pull the pulling block 142 on ratchet 14 by the extension spring 15 on installing plate 1, claw 141 is embedded in the draw-in groove of single direction ratchet 12, therefore in the time there is fracture in torsion spring, because claw 141 embeds in the draw-in groove of single direction ratchet 12 all the time, therefore ratchet 14 can effectively prevent the backwards rotation of single direction ratchet 12, has the effect that stops rolling door to fall suddenly, is conducive to improve the usage safety performance of rolling door.And when being located in axle (not shown in FIG.) in axis hole 13 in the time driving single direction ratchet 12 normal rotation, ratchet 14 is at the gear teeth extrapolability of single direction ratchet 12, and under the effect of the interior pulling force of extension spring 15, great-jump-forward ground embeds in the draw-in groove of single direction ratchet 12, therefore can avoid extension spring 15 in permanent compression or the state of stretching and lose Flexible Reset, being conducive to extend the application life of extension spring 15.Simultaneously owing to ratchet 14 directly can being hinged on installing plate 1, 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.
Described installing plate 1 is provided with chute 16, and described chute 16 is slidably connected and is useful on the movable slider 17 of upset ratchet 14, and described movable slider 17 contacts at the side of pulling block 142 with respect to claw 141.Movable slider 17 is slidably connected in chute 16, in the time that needs single direction ratchet 12 is reversed, movable slider 17 can be connected with to pull bar (not shown in FIG.) with respect to the other end of chute 16, the movable slider 17 that contacts at pulling block 142 by pulling pull bar to make overturns ratchet 14, be convenient to claw 141 and depart from the draw-in groove of single direction ratchet 12, conveniently realize the reversion of single direction ratchet 12.
Described axis hole 13 inwalls convex with flat key 131, and described flat key 131 is integrative-structure setting with single direction ratchet 12.Because axle is in single direction 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 single direction ratchet 12 and torsion spring mounting groove 11 in the time rotating all can rotate thereupon, flat key 131 is wholely set with single direction ratchet 12, this structure can reduce the installation accuracy of axle, can conveniently install.
Described single direction 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 single direction 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 single direction ratchet 12 center roller coupling mechanism forces.
Claims (4)
1. an anti-torsion spring breaking 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 single direction ratchet being connected with torsion spring mounting groove, described single direction ratchet is coaxially arranged with axis hole, described axis hole is through to torsion spring mounting groove, described installing plate is hinged with the ratchet for fixing single direction ratchet, one side of described ratchet includes for being embedded the claw into single direction ratchet, the opposite side of described ratchet convexes with pulling block, and described installing plate is provided with the extension spring for lifting described pulling block.
2. anti-torsion spring breaking device according to claim 1, is characterized in that: described installing plate is provided with chute, and described chute is slidably connected and is useful on the movable slider of upset ratchet, and described movable slider contacts at the side of pulling block with respect to claw.
3. anti-torsion spring breaking device according to claim 1 and 2, is characterized in that: described shaft hole inner wall convexes with flat key, and described flat key and single direction ratchet are integrative-structure setting.
4. anti-torsion spring breaking device according to claim 3, is characterized in that: described single direction 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 |
|---|---|---|---|
| CN201420273908.5U CN203835222U (en) | 2014-05-24 | 2014-05-24 | Device for preventing torsional spring from being broken |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420273908.5U CN203835222U (en) | 2014-05-24 | 2014-05-24 | Device for preventing torsional spring from being broken |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835222U true CN203835222U (en) | 2014-09-17 |
Family
ID=51513080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420273908.5U Expired - Fee Related CN203835222U (en) | 2014-05-24 | 2014-05-24 | Device for preventing torsional spring from being broken |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835222U (en) |
-
2014
- 2014-05-24 CN CN201420273908.5U patent/CN203835222U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20140917 Termination date: 20150524 |
|
| EXPY | Termination of patent right or utility model |