CN203835235U - Torsional spring breakage preventing device - Google Patents
Torsional spring breakage preventing device Download PDFInfo
- Publication number
- CN203835235U CN203835235U CN201420275570.7U CN201420275570U CN203835235U CN 203835235 U CN203835235 U CN 203835235U CN 201420275570 U CN201420275570 U CN 201420275570U CN 203835235 U CN203835235 U CN 203835235U
- Authority
- CN
- China
- Prior art keywords
- ratchet
- single direction
- installing plate
- elastic deformation
- spring
- 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 torsional spring breakage preventing device and aims at providing a torsional spring breakage preventing device advantageous for prolonging the return elasticity of a pawl. The torsional spring breakage preventing device is mainly characterized in that the pawl is pulled by use of a composite tension spring on a mounting plate so that the pawl can be embedded in a clamping groove of a one-way ratchet wheel, and therefore, when the torsional spring is broken, as the pawl is always embedded in the clamping groove of the one-way ratchet wheel, the pawl is capable of effectively preventing reversal of the one-way ratchet wheel and thus preventing a roller shutter door from dropping suddenly. In addition, when the ratchet wheel rotates normally, the pawl is embedded in the clamping groove of the one-way ratchet wheel in a jumping way under the action of the composite spring, and as a result, the composite tension spring can be prevented from losing the return elasticity due to being in compressed or stretched state for a long time and the service life of the composite tension spring can be increased. Meanwhile, the deformation degree of an elastic part can be changed according to pull on the elastic part, and therefore, the service life of elastic deformation of the composite tension spring can be increased and the return elasticity of the pawl can be prolonged.
Description
Technical field
The utility model relates to a kind of safety device, and more particularly, it relates to a kind of torsion spring Anti-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 is being compressed its Flexible Reset of can decaying gradually for a long time, or even can cause and lose its 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 one to be conducive to extend the flexible torsion spring Anti-breaking device of ratchet pawl reset.
For achieving the above object, the utility model provides following technical scheme: a kind of torsion spring Anti-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, described installing plate is provided with the compound extension spring for ratchet being embedded to single direction ratchet, described compound extension spring is by spring wire spiral forming, described compound extension spring includes the pulling part being individually fixed on installing plate and ratchet, and elastic portion between pulling part, described elastic portion includes the first elastic deformation portion and the second elastic deformation portion, the spacing of any two adjacent spring wires of described the second elastic deformation portion is less than the spacing of any two adjacent spring wires of the first elastic deformation portion, the spring wire external diameter of described the first elastic deformation portion is less than the spring wire external diameter of the second elastic deformation portion.
The external diameter of described spring wire increases setting gradually from the end of head end to the second elastic deformation portion of the first elastic deformation portion.
One side of described ratchet includes for being embedded the claw into single direction ratchet, and the opposite side of described ratchet convexes with pulling block, and described pulling part is fixedly connected on the pulling block of ratchet.
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 torsion spring Anti-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, described installing plate is provided with the compound extension spring for ratchet being embedded to single direction ratchet, described compound extension spring is by spring wire spiral forming, described compound extension spring includes the pulling part being individually fixed on installing plate and ratchet, and elastic portion between pulling part, described elastic portion includes the first elastic deformation portion and the second elastic deformation portion, the spacing of any two adjacent spring wires of described the second elastic deformation portion is less than the spacing of any two adjacent spring wires of the first elastic deformation portion, the spring wire external diameter of described the first elastic deformation portion is less than the spring wire external diameter of the second elastic deformation portion.By adopting technique scheme, ratchet is articulated with on installing plate, pull ratchet by the compound extension spring on installing plate, ratchet is embedded in the draw-in groove of single direction ratchet, therefore in the time that fracture occurs torsion spring, because ratchet 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 compound extension spring, therefore can avoid compound extension spring in long compression or the state of stretching and lose Flexible Reset, being conducive to extend the application life of compound extension spring.Simultaneously elastic portion can be pullled power and changes the deformation extent of elastic portion according to born, and therefore has the application life that extends compound extension spring and produce elastic deformation, is conducive to extend the Flexible Reset of ratchet.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model torsion spring Anti-breaking device;
Fig. 2 is the lateral view of the utility model torsion spring Anti-breaking device;
Fig. 3 is the structural representation of compound extension spring.
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, compound extension spring; 151, spring wire; 152, pulling part; 153, elastic portion; 1531, the first elastic deformation portion; 1532, the second elastic deformation portion.
Detailed description of the invention
Referring to figs. 1 through Fig. 3, the utility model torsion spring Anti-breaking device embodiment is described further.
A kind of torsion spring Anti-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, ratchet 14 can be realized and being hinged on installing plate 1 by bolt, installing plate 1 is provided with the compound extension spring 15 for ratchet 14 being embedded to single direction ratchet 12, compound extension spring 15 is by spring wire 151 spiral formings, compound extension spring 15 includes the pulling part 152 being individually fixed on installing plate 1 and ratchet 14, and elastic portion 153 between pulling part 152, the pulling part 152 of compound extension spring 15 one end is fixed on installing plate 1, the pulling part 152 of the other end is fixed on ratchet 14, and by ratchet 14 to single direction ratchet 12 1 laybacks, ratchet 14 is embedded in the draw-in groove of single direction ratchet 12 by compound extension spring 15, elastic portion 153 includes the first elastic deformation portion 1531 and the second elastic deformation portion 1532, the spacing of any two adjacent spring wires 151 of the second elastic deformation portion 1532 is less than the spacing of any two adjacent spring wires 151 of the first elastic deformation portion 1531, spring wire 151 external diameters of the first elastic deformation portion 1531 are less than spring wire 151 external diameters of the second elastic deformation portion 1532.Ratchet 14 is articulated with on installing plate 1, pull ratchet 14 by the compound extension spring 15 on installing plate 1, ratchet 14 is embedded in the draw-in groove of single direction ratchet 12, therefore in the time there is fracture in torsion spring, because ratchet 14 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 compound extension spring 15, great-jump-forward ground embeds in the draw-in groove of single direction ratchet 12, therefore can avoid compound extension spring 15 in long compression or the state of stretching and lose Flexible Reset, being conducive to extend the application life of compound 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.Elastic portion 153 includes the first elastic deformation portion 1531 and the second elastic deformation portion 1532, and the distortion elasticity that the first elastic deformation portion 1531 and the second elastic deformation portion 1532 produce can change with the born power of pullling, therefore elastic portion 153 can be pullled power and change the deformation extent of elastic portion 153 according to born, extend so have the application life that compound extension spring 15 produces elastic deformation, be conducive to extend the Flexible Reset of ratchet 14; And can be multiple for pulling part 152 fixing installing holes by being provided with on installing plate 1, the convenient installation site of adjusting compound extension spring 15, and change compound extension spring 15 and act on the active force of ratchet 14.
The external diameter of described spring wire 151 increases setting gradually from the end of head end to the second elastic deformation portion 1532 of the first elastic deformation portion 1531.The elastic force that compound extension spring 15 is produced has more resiliency, is convenient to compound extension spring 15 evenly distortion slowly in the time stretching, and is conducive to improve the application life of compound extension spring 15.
One side of described ratchet 14 includes for being embedded the claw 141 into single direction ratchet 12, and the opposite side of described ratchet 14 convexes with pulling block 142, and described pulling part 152 is fixedly connected on the pulling block 142 of ratchet 14.The pulling part 152 of compound extension spring 15 one end is fixed on pulling block 142, the pulling part 152 of the other end is fixed on the side with respect to single direction ratchet 12 on installing plate 1, this structure is convenient to by compound extension spring 15, ratchet 14 be pulled to a layback of single direction ratchet 12, and claw 141 is embedded in the draw-in groove 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 (5)
1. a torsion spring Anti-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, described installing plate is provided with the compound extension spring for ratchet being embedded to single direction ratchet, described compound extension spring is by spring wire spiral forming, described compound extension spring includes the pulling part being individually fixed on installing plate and ratchet, and elastic portion between pulling part, described elastic portion includes the first elastic deformation portion and the second elastic deformation portion, the spacing of any two adjacent spring wires of described the second elastic deformation portion is less than the spacing of any two adjacent spring wires of the first elastic deformation portion, the spring wire external diameter of described the first elastic deformation portion is less than the spring wire external diameter of the second elastic deformation portion.
2. torsion spring Anti-breaking device according to claim 1, is characterized in that: the external diameter of described spring wire increases setting gradually from the end of head end to the second elastic deformation portion of the first elastic deformation portion.
3. torsion spring Anti-breaking device according to claim 1 and 2, is characterized in that: a side of described ratchet includes for being embedded the claw into single direction ratchet, and the opposite side of described ratchet convexes with pulling block, and described pulling part is fixedly connected on the pulling block of ratchet.
4. torsion spring Anti-breaking device according to claim 3, is characterized in that: described shaft hole inner wall convexes with flat key, described flat key and single direction ratchet are integrative-structure setting.
5. torsion spring Anti-breaking device according to claim 4, 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 |
|---|---|---|---|
| CN201420275570.7U CN203835235U (en) | 2014-05-24 | 2014-05-24 | Torsional spring breakage preventing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420275570.7U CN203835235U (en) | 2014-05-24 | 2014-05-24 | Torsional spring breakage preventing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835235U true CN203835235U (en) | 2014-09-17 |
Family
ID=51513092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420275570.7U Expired - Fee Related CN203835235U (en) | 2014-05-24 | 2014-05-24 | Torsional spring breakage preventing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835235U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244540A (en) * | 2018-03-09 | 2019-09-17 | Eta瑞士钟表制造股份有限公司 | For making the device of wheel rotation with teeth |
| CN112120556A (en) * | 2020-08-06 | 2020-12-25 | 天台光润五金机电有限公司 | Household snack shell collecting and treating device |
-
2014
- 2014-05-24 CN CN201420275570.7U patent/CN203835235U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244540A (en) * | 2018-03-09 | 2019-09-17 | Eta瑞士钟表制造股份有限公司 | For making the device of wheel rotation with teeth |
| US11428298B2 (en) | 2018-03-09 | 2022-08-30 | Eta Sa Manufacture Horlogere Suisse | Device for rotating a toothed wheel |
| CN112120556A (en) * | 2020-08-06 | 2020-12-25 | 天台光润五金机电有限公司 | Household snack shell collecting and treating device |
| CN112120556B (en) * | 2020-08-06 | 2021-12-07 | 台州宝盾科技有限公司 | Household snack shell collecting and treating device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203835235U (en) | Torsional spring breakage preventing device | |
| CN203974979U (en) | A kind of spare tyre lifter | |
| CN203847624U (en) | Damping structure and floor socket | |
| CN204384637U (en) | The automatic retracted speed reduction gearing of tube coiling appts | |
| CN101625222A (en) | Flexible rule | |
| CN203835222U (en) | Device for preventing torsional spring from being broken | |
| CN107858985A (en) | A kind of town road maintenance ice breaker | |
| CN202148110U (en) | Tightness sensor for steel wire rope of elevator | |
| CN204468076U (en) | A kind of electrocardiograph conducting wire accommodation device | |
| CN207814358U (en) | A kind of tension means for elevator | |
| CN201771998U (en) | Brake for curtain rolling machine of big-arch shelter | |
| CN202203309U (en) | Brake device | |
| CN203453342U (en) | Drum backstop | |
| CN212510237U (en) | Monitoring device support based on network security | |
| CN103030080B (en) | Anti-falling lifting device | |
| CN206928879U (en) | A kind of resistance gauge | |
| CN206753440U (en) | A kind of roller shutter | |
| CN201661664U (en) | Torsion spring return device | |
| CN202638476U (en) | Bowing toothed plate fixing device | |
| CN201832299U (en) | High-rise escaping device | |
| CN203212611U (en) | Braking device of annealing furnace paying-off seat | |
| CN201004708Y (en) | Extensible earphone | |
| CN202369311U (en) | Retainer | |
| CN206126639U (en) | Staircase | |
| CN201493800U (en) | Connector |
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 |