CN203456326U - Drive mechanism of switching device, and switching device - Google Patents
Drive mechanism of switching device, and switching device Download PDFInfo
- Publication number
- CN203456326U CN203456326U CN201320538934.1U CN201320538934U CN203456326U CN 203456326 U CN203456326 U CN 203456326U CN 201320538934 U CN201320538934 U CN 201320538934U CN 203456326 U CN203456326 U CN 203456326U
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- contact
- switching device
- driving
- driving shaft
- device shifter
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Abstract
A drive mechanism drive mechanism of a switching device and the switching device are provided. The drive mechanism of the switching device comprises a drive shaft (10), a slide member (20), a transmission shaft (30) and an elastic drive assembly (40). The drive shaft has a cutoff position that separates a moving contact and a fixed contact of the switching device and a closed position that enables the moving contact and the fixed contact of the switching device to contact each other, and further has a first drive part (12) and a second drive part (14). The slide member has a first transmission part (22) which can contact with the first drive part and a second transmission part (24) which can contact with the second drive part. If the first drive part is disengaged from the contact with the first transmission part, the second drive part can continue the contact with the second transmission part. The movement of the slide member in the slide direction can drive the transmission shaft to rotate. The elastic drive assembly can drive the slide member to move in the slide direction.
Description
Technical field
The utility model relates to driving mechanism, relates in particular to a kind of driving mechanism for switching device shifter.The utility model also provides the switching device shifter that uses this driving mechanism.
Background technology
In switching device, by operation driving shaft, can realize armature contact and contact with separated with fixed contact, thereby realize the control system of switching on or off electricity to supply line.In order to realize armature contact in switching device, contact with fixed contact and the completing fast of separating action, being typically provided with flexible drive mechanism, is mainly utilize spring to store or discharge that elasticity can contact with fixed contact with process auxiliary drive armature contact and the completing of separating action.The large auxiliary torque that while can utilize spring to produce in switching action, increases actuating force, guarantees to realize safely armature contact and contact with separated with fixed contact in the switching device of larger rated current.
In the use of switching device, there is the situation that makes armature contact and fixed contact welding because of logical super-high-current, if there is slight welding between armature contact and fixed contact, and the welding frictional force between them is greater than the actuating force of flexible drive mechanism, cannot complete the separated of armature contact and fixed contact by operation driving shaft.In addition, if cannot be separated after serious welding between armature contact and fixed contact, driving shaft likely indicator cock device, in off state, brings potential safety hazard.
Utility model content
The purpose of this utility model is to provide a kind of driving mechanism of switching device shifter, when armature contact and the slight welding of fixed contact and welding frictional force are greater than the actuating force of flexible drive mechanism, realizes the separated of armature contact and fixed contact.
Another object of the present utility model is to provide a kind of driving mechanism of switching device shifter, when armature contact and fixed contact welding cannot be separated, avoids driving shaft to be designated as open position.
Another object of the present utility model is to provide the switching device shifter that uses this driving mechanism.
The utility model provides a kind of driving mechanism of switching device shifter, comprises a driving shaft, a sliding part, a power transmission shaft and a flexible drive assembly.Driving shaft is arranged at switching device shifter rotationally, it has the make position that armature contact that armature contact that makes switching device shifter open position separated with fixed contact make switching device shifter with one contacts with fixed contact, and driving shaft has one and is arranged at the first circumferential drive division of driving shaft and one and is arranged at circumferential the second drive division of driving shaft.The rotation of driving shaft can drive this sliding part to move along a glide direction, this sliding part has first driving section that can contact with the first drive division and second driving section that can contact with the second drive division, in driving shaft is rotated to open position by make position, if the first drive division disengaging contacts with the first driving section, the second drive division can continue to contact with the second driving section.Sliding part can drive this power transmission shaft to rotate along moving of glide direction.Flexible drive assembly can drive sliding part to move along glide direction, and it has a dead-centre position that makes its elastic restoring force maximum.
The driving mechanism of switching device shifter, by after the first drive division and the first driving section disengage, by the second drive division, act on the second driving section, continue to promote sliding part and move, thereby drive power transmission shaft rotates, reduce the welding frictional force between armature contact and fixed contact.When the welding frictional force between armature contact and fixed contact is less than the elastic-restoring force of elastic drive part, elastic drive part can drive by sliding part and drive power transmission shaft to complete the separated of armature contact and fixed contact.
In another schematic execution mode of the driving mechanism of switching device shifter, flexible drive assembly comprises a framework, an elastic component, a connector and a driving member.Elastic component is arranged at framework, and its one end can be resisted against framework.Connector is arranged at framework, and the other end of elastic component can be resisted against connector.Driving member is arranged at framework, and it has the contact jaw and a driving end that can be connected with sliding part that can contact with connector.
In the schematic execution mode of another kind of the driving mechanism of switching device shifter, sliding part has second butting section, and driving shaft circumferentially has first butting section that can be resisted against the second butting section along it, at driving shaft, by make position, to open position rotation and flexible drive assembly, cross dead-centre position, if fixed contact cannot be separated with armature contact, the first butting section is resisted against the second butting section.
In another schematic execution mode of the driving mechanism of switching device shifter, the driving mechanism of switching device shifter comprises the assembly that pushes back of a casing that can be connected in switching device shifter, and driving shaft along its circumferentially have one can with the portion that pushes back that pushes back assembly and contact, in driving shaft is rotated to open position by make position, if push back assembly, contact with the portion of pushing back, push back assembly and can promote driving shaft and rotated towards make position by open position.
In another schematic execution mode of the driving mechanism of switching device shifter, push back assembly and comprise that one pushes back spring and one and pushes back piece.The one end that pushes back spring is resisted against casing.Push back piece and have a connecting portion and a contact site, the other end that pushes back spring is resisted against connecting portion and contact site can be resisted against the portion of pushing back.
The utility model also provides a kind of switching device shifter, comprises a casing and an above-mentioned driving mechanism being arranged in casing.
Accompanying drawing explanation
The following drawings only schematically illustrates and explains the utility model, does not limit scope of the present utility model.
Fig. 1 is for illustrating the structural representation of a kind of exemplary embodiment of driving mechanism of switching device shifter.
Fig. 2 to Fig. 5 is for illustrating the motion process of the driving mechanism of switching device shifter.
Fig. 6 to Figure 11 is for illustrating the motion process that pushes back assembly.
Label declaration
10 driving shafts
12 first drive divisions
14 second drive divisions
16 first butting sections
18 push back portion
20 sliding parts
22 first driving sections
24 second driving sections
26 second butting sections
30 power transmission shafts
40 flexible drive assemblies
42 elastic components
44 driving members
442 contact jaws
444 driving ends
46 frameworks
48 connectors
50 push back assembly
52 push back spring
54 push back piece
542 connecting portions
544 contact sites
60 casings.
Embodiment
For the technical characterictic of utility model, object and effect being had more clearly, understand, now contrast accompanying drawing embodiment of the present utility model is described, in each figure, identical label represents identical part.
In this article, " schematically " expression " is served as example, example or explanation ", any diagram, the execution mode that are described in this article " schematically " should be interpreted as a kind of preferred or have more the technical scheme of advantage.
For making drawing succinct, in each figure, only schematically shown the part relevant to the utility model, they do not represent that it is as the practical structures of product.In addition, so that drawing is succinctly convenient to understand, in some figure, there are the parts of same structure or function, only schematically illustrated one of them, or only marked one of them.
In this article, " one " not only represents " only this ", also can represent the situation of " more than one ".In this article, " first ", " second " etc. are only for differentiation each other, but not represent their significance level and order etc.
Fig. 1 is for illustrating the structural representation of a kind of exemplary embodiment of driving mechanism of switching device shifter.As shown in the figure, the driving mechanism of switching device shifter comprises a driving shaft 10, sliding part 20, power transmission shaft 30 and a flexible drive assembly 40.
Wherein, driving shaft 10 is arranged in switching device shifter, and driving shaft 10 can be driven rotation by operating grip or drive motors, so by sliding part 20 transmissions to power transmission shaft 30, thereby being electrically connected between switching activity contact and fixed contact.Driving shaft 10, in the process of rotation, is provided with an open position and a make position.When driving shaft 10 is during in open position, separated between armature contact and fixed contact; When driving shaft 10 is in the close position, armature contact contacts with fixed contact.Upwards there is first drive division 12 and second drive division 14 week of driving shaft 10.In a kind of exemplary embodiment of driving mechanism of switching device shifter, the first drive division 12 and the second drive division 14 be respectively two along the projection of radially extending of driving shaft 10, and upwards the protrusion direction of the first drive division 12 and the protrusion direction of the second drive division 14 have an angle along week of driving shaft 10.
Sliding part 20 can be by driving shaft 10 rotation between make position and open position and driving, along the glide direction shown in arrow in figure, move.Sliding part 20 has first driving section 22 and second driving section 24.The first driving section 22 can contact with the first drive division 12.When driving shaft 10 is rotated to open position by make position, the first driving section 22 that driving shaft 10 promotes sliding part 20 by the first drive division 12, realizes sliding part 20 and moves along the glide direction shown in arrow in figure.The second driving section 24 can contact with the second drive division 14.When driving shaft 10 is rotated and the first drive division 12 departs from the used time of doing with the first driving section 22 to open position by make position, the second driving section 24 can be continued and the second drive division 14 contact actions, the second driving section 24 that driving shaft 10 promotes sliding part 20 by the second drive division 14, realizes sliding part 20 and moves along the glide direction shown in arrow in figure.
When sliding part 20 is when in figure, the glide direction shown in arrow is moved, sliding part 20 can drive power transmission shaft 30 to rotate, thereby realize between armature contact and fixed contact, from contact, becomes disconnection.The mode that sliding part 20 drives power transmission shafts 30 to rotate herein can be used any in existing structure, does not repeat them here.
Fig. 2 to Fig. 6 is for the motion process of the driving mechanism of switching device shifter is described, and in Fig. 2 and Fig. 6, the residing position of driving shaft corresponds respectively to make position and open position.As shown in Figure 2, the first drive division 12 contacts with the first driving section 22, and the second drive division 14 does not contact with the second driving section 24.As shown in Figure 3, driving shaft 10 is rotated to open position by make position, and now the first drive division 12 contacts with the first driving section 22, and driving shaft 10 promotes sliding part 20 and moves along the glide direction shown in arrow in figure, and sliding part 20 starts to drive power transmission shaft 30 to rotate.Sliding part 20 moves along the glide direction shown in arrow in figure, makes driving member 44 promote elastic component 42 elastic deformations.The second drive division 14 does not contact with the second driving section 24.
As shown in Figure 4, now flexible drive assembly 40 has just been crossed dead-centre position, the first drive division 12 contacts with the first driving section 22, and the second drive division 14 contacts with the second driving section 24, because the welding frictional force between armature contact and fixed contact is greater than the elastic restoring force of elastic component 42, make flexible drive assembly 40 cannot drive sliding part 20 to move along the glide direction shown in arrow in figure.
As shown in Figure 5, continue rotating driveshaft 10, now the first drive division 12 disengagings contact with the first driving section 22, and the second drive division 14 contacts with the second driving section 24.The rotation of driving shaft 10 can be passed to sliding part 20 by the second drive division 14 and the second driving section 24 being in contact with one another.Driving shaft 10 rotation now, makes the welding frictional force between armature contact and fixed contact be converted to dynamic friction by static friction, thereby greatly reduces welding frictional force.When welding frictional force is reduced to the elastic-restoring force that is less than elastic component 42, flexible drive assembly 40 starts to drive sliding part 20 to move along the glide direction shown in arrow in figure, drive driving shaft 10 to turn to open position as shown in Figure 6, and armature contact and fixed contact disengage simultaneously.
As shown in Figure 1, in a kind of exemplary embodiment of driving mechanism of switching device shifter, sliding part 20 has second butting section 26, and driving shaft 10 has one and is arranged on the first butting section 16 making progress in its week.In the use of switching device shifter, if welding cannot be separated between armature contact and fixed contact, when driving shaft 10 is rotated to open position by make position, the first butting section 16 can be resisted against on the second butting section 26, makes driving shaft 10 cannot continue to rotate to open position.
As shown in Figure 1, in a kind of exemplary embodiment of driving mechanism of switching device shifter, the driving mechanism of switching device shifter comprises that pushes back an assembly 50, and driving shaft 10 pushes back portion 18 along upwards having one its week.In the use of switching device shifter, if welding cannot be separated between armature contact and fixed contact, when driving shaft 10 is rotated and cannot be rotated further to open position by make position, and when the external force that drives driving shaft 10 to rotate loses, push back assembly 50 by with push back portion 18 and contact and promote driving shaft 10 and rotated to make position by open position, avoid armature contact not separated with fixed contact, and driving shaft 10 is in open position.
In a kind of exemplary embodiment of driving mechanism of switching device shifter, push back assembly 50 and comprise that one pushes back spring 52 and one and pushes back piece 54.Push back piece 54 and there is a connecting portion 542 and a contact site 544.The one end that pushes back spring 52 is resisted against on casing 60, and the other end is resisted against connecting portion 542.Contact site 544 can be resisted against in the portion of pushing back 18, thereby drives driving shaft 10 to rotate.
Fig. 7 to Figure 11 is for the motion process that pushes back assembly is described, and in Fig. 7, the residing position of driving shaft is make position.As shown in Figure 7, contact site 544 does not contact with pushing back portion 18, and the first butting section 16 does not contact with the second butting section 26.As shown in Figure 8, driving shaft 10 is rotated to open position by make position, and contact site 544 contacts with pushing back portion 18, and the first butting section 16 does not contact with the second butting section 26.Sliding part 20 starts to move along the glide direction shown in arrow in figure, and sliding part 20 starts to drive power transmission shaft 30 to rotate, and the elastic component 42 of flexible drive assembly 40 is compressed.
As shown in Figure 9, now flexible drive assembly 40 has just been crossed dead-centre position, and contact site 544 contacts with pushing back portion 18, makes to push back spring 52 elastic deformations, and the first butting section 16 does not contact with the second butting section 26.Because the welding frictional force between armature contact and fixed contact is greater than the elastic restoring force of elastic component 42, make flexible drive assembly 40 cannot drive sliding part 20 to move along the glide direction shown in arrow in figure.
As shown in figure 10, continue rotating driveshaft 10, now the first butting section 16 is resisted against on the second butting section 26, and makes driving shaft 10 cannot continue to rotate to open position, thereby makes driving shaft cannot be designated as open position (OFF).Contact site 544 with push back portion 18 and contact, make to push back spring 52 and continue elastic deformation, when the external force that drives driving shaft 10 to rotate loses, push back spring 52 and promote to push back piece 54, and push back piece 54 and promote to push back portion 18, thereby promote driving shaft 10, by open position, to make position, rotated, as shown in figure 11, make driving shaft 10 away from open position.
In addition, when driving shaft 10 is rotated to open position by make position, when pushing back portion 18, contact with pushing back piece 54, push back spring 52 and can provide motion buffering to pushing back portion 18, avoid the portion that pushes back 18 to be impacted in the motion of driving shaft.Meanwhile, also the motion for driving shaft provides buffering, thereby improves useful life and the reliability of the driving mechanism of switching device shifter.
The utility model also provides a kind of switching device shifter, and it comprises a casing 60 and is arranged on the above-mentioned driving mechanism in casing 60.
Be to be understood that, although this specification is described according to each embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should make specification as a whole, technical scheme in each embodiment also can, through appropriately combined, form other execution modes that it will be appreciated by those skilled in the art that.
Listed a series of detailed description is above only illustrating for feasibility embodiment of the present utility model; they are not in order to limit protection range of the present utility model; allly do not depart from equivalent embodiment or the change that the utility model skill spirit is done; as the combination of feature, cut apart or repeat, within all should being included in protection range of the present utility model.
Claims (6)
1. the driving mechanism of switching device shifter, is characterized in that it comprises:
A driving shaft (10) that is arranged at rotationally described switching device shifter, it has the make position that armature contact that armature contact that makes described switching device shifter open position separated with fixed contact make described switching device shifter with one contacts with fixed contact, and described driving shaft (10) has one and is arranged at circumferential the first drive division (12) of described driving shaft and one and is arranged at circumferential the second drive division (14) of described driving shaft;
A sliding part (20), the rotation of described driving shaft (10) can drive this sliding part (20) to move along a glide direction, this sliding part (20) has first driving section (22) that can contact with described the first drive division (12) and second driving section (24) that can contact with described the second drive division (14), in described driving shaft (10) is rotated to described open position by described make position, if described the first drive division (12) disengaging contacts with described the first driving section (22), described the second drive division (14) can continue to contact with described the second driving section (24),
A power transmission shaft (30), described sliding part (20) can drive this power transmission shaft (30) to rotate along moving of described glide direction; With a flexible drive assembly (40) that can drive described sliding part (20) to move along described glide direction, it has a dead-centre position that makes the elastic-restoring force maximum of described flexible drive assembly (40).
2. the driving mechanism of switching device shifter as claimed in claim 1, wherein said flexible drive assembly (40) comprising:
A framework (46);
An elastic component (42) that is arranged at described framework, its one end can be resisted against described framework (46);
A connector (48) that is arranged at described framework, the other end of described elastic component (42) can be resisted against described connector (48); With
A driving member (44) that is arranged at described framework, it has the contact jaw (442) and a driving end (444) that can be connected with described sliding part (20) that can contact with described connector (48).
3. the driving mechanism of switching device shifter as claimed in claim 1, wherein said sliding part (20) has second butting section (26), and described driving shaft (10) circumferentially has first butting section (16) that can be resisted against described the second butting section (26) along it, at described driving shaft (10), by described make position, to described open position rotation and described flexible drive assembly (40), cross described dead-centre position, if described fixed contact cannot be separated with described armature contact, described the first butting section (16) is resisted against described the second butting section (26).
4. the driving mechanism of switching device shifter as claimed in claim 1, what the driving mechanism of wherein said switching device shifter comprised a casing (60) that can be connected in described switching device shifter pushes back assembly (50), and described driving shaft (10) circumferentially has one along it can push back the portion that pushes back (18) that assembly (50) contacts with described
In described driving shaft (10) is rotated to described open position by described make position, if described in push back assembly (50) with described in push back portion (18) and contact, described in push back assembly (50) and can promote described driving shaft (10) and rotated towards described make position by described open position.
5. the driving mechanism of switching device shifter as claimed in claim 4, the wherein said assembly (50) that pushes back comprising:
One pushes back spring (52), and its one end is resisted against described casing (60); With
One pushes back piece (54), and it has a connecting portion (542) and a contact site (544), described in push back spring (52) the other end be resisted against described connecting portion (542) and described contact site (544) and push back portion (18) described in can being resisted against.
6. switching device shifter, is characterized in that it comprises:
A casing (60); With
Driving mechanism as described in claim 1 to 5 any one, it is arranged at described casing (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320538934.1U CN203456326U (en) | 2013-08-30 | 2013-08-30 | Drive mechanism of switching device, and switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320538934.1U CN203456326U (en) | 2013-08-30 | 2013-08-30 | Drive mechanism of switching device, and switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456326U true CN203456326U (en) | 2014-02-26 |
Family
ID=50136184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320538934.1U Expired - Fee Related CN203456326U (en) | 2013-08-30 | 2013-08-30 | Drive mechanism of switching device, and switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203456326U (en) |
-
2013
- 2013-08-30 CN CN201320538934.1U patent/CN203456326U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20200830 |