CN102881516B - Transmission mechanism of auxiliary contact device capable of being temporarily contacted - Google Patents
Transmission mechanism of auxiliary contact device capable of being temporarily contacted Download PDFInfo
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- CN102881516B CN102881516B CN201110192757.1A CN201110192757A CN102881516B CN 102881516 B CN102881516 B CN 102881516B CN 201110192757 A CN201110192757 A CN 201110192757A CN 102881516 B CN102881516 B CN 102881516B
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Abstract
The invention relates to a transmission mechanism of an auxiliary contact device capable of being temporarily contacted. The transmission mechanism comprises an auxiliary contact support for supporting a movable auxiliary contact, and the auxiliary contact support is connected with a driving part through a connecting mechanism, and the driving part is driven by a main contact support of a contactor; the connecting mechanism comprises a shaft hole vertically formed in the auxiliary contact support, a chute transversely arranged, an elastic element, a stopper and a driving shaft, wherein the chute and the shaft hole are communicated; the elastic element and the stopper are contained in the chute, and the electric element pushes the stopper to the shaft hole; the driving shaft is provided with a protrusion, and the lower end of the driving shaft is connected with the driving part; the upper end of the driving shaft is inserted into the shaft hole, the stopper is clamped through the protrusion on the driving shaft, so that the relevance movement of a main contact and an auxiliary contact device of the contactor is implemented. The transmission mechanism of the auxiliary contact device capable of being temporarily contacted forms the auxiliary contact device together with a static auxiliary contact, the movable auxiliary contact and the like, the auxiliary contact device capable of being temporarily contacted can be conveniently combined with the contactor, so that the contactor with the auxiliary contact device capable of being temporarily contacted is formed. The transmission mechanism has the advantages of good reliability and low cost.
Description
Technical field
The present invention relates to the transmission mechanism for the cooperative a kind of auxiliary contact device that can temporarily contact of same contactor (electromagnetic type, electronic type, magneto etc.), belong to Low Voltage Electrical Apparatus.
Background technology
Contactor is large as one amount, wide control apparatus, be used at control circuit, realize remote connection, open circuit and control motor starting, stop, disjunction in running, the switching of capacitor group, power factor compensation etc., and can be combined into motor starter with suitable thermal relay or electronic protecting device, may there is the circuit of overload in protection, also can combine with auxiliary contact device, protection has larger capacitive, inductive load or have the circuit of instantaneous large-current, be widely used in light industry, metallurgical, chemical industry, colliery, machinery, lifting, railway, boats and ships, the industries such as communication.
Auxiliary contact device both can be arranged on the front of contactor, also can be arranged on the side of contactor.Each auxiliary contact device at least comprises a contact that is called as auxiliary contact, as a subsidiary loop, and the opening and the state control (associated) of closing by the open and close of this contactor of this subsidiary loop.
In the circuit arrangement that these auxiliary contact devices are also usually used in charging, as: the capacitives such as motor, firing equipment or inductive load, for improving the power factor (cos φ) of circuit.Auxiliary contact is for the power supply of the resistance that ensures one or more and main contact contactor and be arranged in parallel, and closed before the main contact closure of this contactor, then, after the main contact closure of this contactor, disconnects.Therefore, the resistance of a very short time can be between auxiliary contact closure and the short circuit being caused by main contact, inserted, like this, the peak value of the closed path of main contact can be reduced.
The auxiliary contact device that this class can temporarily contact has very complicated structure conventionally, need to auxiliary contact disconnection and main contact off period be reconnected auxiliary contact at main contact period of contact.Therefore, the auxiliary contact device of the temporary transient contact of this class is difficult to process this current peak, and this current peak is not always very little.
At present, on the world, domestic market, the auxiliary contact device that major part can temporarily contact is can be realized by the material of the magnetic attraction of magnetic material and a counter-force spring by a magnetic material (permanent magnet),, the motion of auxiliary contact device is supported associated with main noddle on contactor, motion comprises two parts: the movement parts that comprises a magnet, comprises the auxiliary contact support of a steel plate (or other can by the material of attraction).When main noddle on contactor is when being disconnected to closure, dynamic and static auxiliary contact is also preset behind overtravel position by being disconnected to closure and reaching under associated movement parts drives, magnet and steel plate (or other can by the material of attraction) be thrown off, dynamic auxiliary contact part is by reaction spring jack-up, and dynamic and static auxiliary contact disconnects.And when the iron core of contactor is by being closed to while disconnecting, support upwards jack-up of associated movement parts (comprising magnet) with main noddle on contactor, with steel plate (or other can by the material of attraction) is pulled together, for next time closed ready.
The auxiliary contact device that can temporarily contact in this way practical function is simple, but reliability is difficult to ensure, magnet closed, disconnect after certain number of times, magnetic force can be along with progressively decay and even disappearance under the factors such as the impact of action frequency, impulsive force, ambient temperature, surrounding magnetic field, be that magnetic force is uncontrollable, may make the default overtravel of auxiliary contact device reduce, reduce useful life, even may cause disabler, and permanent magnet cost is higher, anti-impact force is little etc., is unfavorable for the development of this series products and popularizes.
Summary of the invention
In view of above-mentioned background, the object of this invention is to provide one and can meet instructions for use, good reliability, the transmission mechanism of the lower-cost auxiliary contact device that can temporarily contact.
For achieving the above object, the present invention adopts following technical scheme:
A transmission mechanism for the auxiliary contact device that can temporarily contact, comprises the auxiliary contact support of supporting dynamic auxiliary contact, it is characterized in that:
Described auxiliary contact support connects the driving link being driven by the main contact support of contactor by bindiny mechanism:
Described bindiny mechanism comprises:
The axis hole of vertically offering in described auxiliary contact support and the chute of laterally offering, chute is communicated with axis hole:
Flexible member and backstop, be contained in described chute, and flexible member is pushed backstop to axis hole:
Driving shaft, driving shaft is provided with projection, and the lower end of driving shaft is connected with described driving link:
Insert in described axis hole the upper end of driving shaft, and block backstop by the projection on driving shaft, realizes the coupled movements of main contact and the auxiliary contact device of contactor.
Further:
The lower end of described driving link is provided with the hook with the main contact Supporting connectivity of described contactor.
The upper and lower surface of the projection on described driving shaft is asymmetric, and the gradient of upper surface is less than the gradient of lower surface.
The invention has the beneficial effects as follows:
Form by hook realizes and guarantees: the smooth hook of contact support and driving link, disengagement, the circulation of hook again, simple in structure, be easy to realization, reliability is high, low cost of manufacture.
Brief description of the drawings
Fig. 1 is main parts size composition schematic diagram of the present invention:
Fig. 2 is driving link structural representation of the present invention:
Fig. 3 is auxiliary contact holding components of the present invention:
Fig. 4 is the endoporus of auxiliary contact support, the partial schematic sectional view of slot part:
Fig. 5 schematic diagram (auxiliary contact support is working portion partial sectional view) that is the present invention when normal condition (hook):
Fig. 6 is the present invention's schematic diagram (auxiliary contact support is working portion partial sectional view) in the time of disengaged condition.
Embodiment
The invention provides a kind of transmission mechanism of the auxiliary contact device that can temporarily contact, the auxiliary contact device that it can temporarily contact with compositions such as quiet auxiliary contact, dynamic auxiliary contacts, this auxiliary contact device that can temporarily contact can very just make to combine with contactor, forms the contactor with the auxiliary contact device of temporary transient contact.
This auxiliary contact device that can temporarily contact comprises a casing, and the transmission mechanism of the auxiliary contact device that can temporarily contact, quiet auxiliary contact, dynamic auxiliary contact etc. are contained in this casing.
The transmission mechanism of this auxiliary contact device that can temporarily contact comprises the auxiliary contact support of supporting dynamic auxiliary contact, auxiliary contact is supported to connect by bindiny mechanism the driving link being driven by the main contact support of contactor: bindiny mechanism comprises: the axis hole of vertically offering in auxiliary contact support and the chute of laterally offering, chute is communicated with axis hole: flexible member and backstop, be contained in chute, flexible member is pushed backstop to axis hole: driving shaft, driving shaft is provided with projection, the lower end of driving shaft is connected with driving link: insert in axis hole the upper end of driving shaft, and block backstop by the projection on driving shaft, realize the coupled movements of main contact and the auxiliary contact device of contactor.
When in the shaft insertion hole of driving link, the jut compressing backstop of axle, the power value deficiency that gives backstop when jut is so that when deformation of elastic components, this jut is blocked by backstop, now driving link and auxiliary contact are supported coupled movements: when the power value that gives flexible member when backstop exceedes the deformation power value of flexible member, backstop is pushed and moves to the direction of leaving hole in groove, the situation that now jut and backstop are stuck changes, both separate, and jut leaves the position of backstop.
Become as a whole auxiliary contact holding components and the driving link at the axle place with projection to combine by above-mentioned, driving link can be hooked on the main contact of contactor and support, and with the driving campaign of main contact support, realize associated movement, and in the time moving to certain position or time, realize driving link and auxiliary contact support disengagement.
Under nature (inoperative) state, the main contact of contactor is in open position, and the axle of driving link inserts in the hole of auxiliary contact support, and the lower surface of jut is on the top of backstop.In the time that the control coil of contactor is switched on, main contact support drives driving link motion, after auxiliary contact support drives dynamic auxiliary contact to contact and complete predetermined overtravel with quiet auxiliary contact, auxiliary contact support arrives spacing position and can not continue mobile again, and driving link continues to move under main contact support drives, now, the lower surface extruding backstop of the jut of axle, backstop pressuring elastic element and make flexible member compression, backstop can be along the lower surface of the jut of axle certain stroke that slides, driving link and auxiliary contact support are separately, separately, backstop is no longer stressed, position when flexible member resets and makes backstop get back to nature, auxiliary contact support pops up under the effect of reaction spring, disconnect auxiliary moving, fixed contact, realize the rear disjunction of temporary transient contact.
When the control coil dead electricity of contactor, main contact support drives the opposite direction motion of driving link to the direction of motion of control coil energising, in the time that the upper surface of the jut of the axle of driving link moves to the stop dog position of auxiliary contact holding components, because being supported under position-limiting action, can not move auxiliary contact, the upper surface of the jut of the axle of driving link pushes flexible member by backstop, and make backstop after the certain stroke of upper surface slide of the jut of axle, the lower surface of the jut of axle contacts with backstop, flexible member resets and makes backstop get back to original position, position while making each several part be returned to nature also remains on the lower surface of the jut of axle the state of blocking.
Further illustrate below in conjunction with the drawings and specific embodiments:
It shown in Fig. 1, is the main parts size of the transmission mechanism of the auxiliary contact device that can temporarily contact.The transmission mechanism of the auxiliary contact device that can temporarily connect mainly by auxiliary contact support 1, driving link 2, ball 3 (being backstop), a spring 4 (being flexible member), a plug 5 form.
What Fig. 2 described is driving link structure.On driving link 2, have an axle 24, this axle 24 is provided with projection 25, and the upper and lower surface of this projection 25 is asymmetric, and upper surface 21 gradients are less, and lower surface 22 gradients are larger.Two hooks 23 are arranged at the bottom of driving link 2, can be hooked in the contact support of main contactor, and by its driving.
What Fig. 3 described is auxiliary contact holding components, and what Fig. 4 described is endoporus, the slot part partial sectional view that this auxiliary contact is supported.
In the auxiliary contact support 1 that Fig. 3 shows, dynamic auxiliary contact 7 and touch spring 6 are housed, bottom is a reaction spring 8, these reaction spring 8 lower ends act on the casing of the auxiliary contact device that can temporarily contact, and auxiliary contact is not supported in while stressing and remains on dynamic and static auxiliary contact in off-state.
What Fig. 4 described is that auxiliary contact is supported vertical hole 11 and the transverse groove 12 on 1, the position of sliding for auxiliary contact support 1 and axle 24 in hole 11, and groove 12 is the position of dress ball 3, spring 4.
The schematic diagram (auxiliary contact support be working portion partial sectional view) of the transmission mechanism of what Fig. 5 described the is auxiliary contact device that can temporarily contact in the time of nature (inoperative) state.Under non operating state, when the control coil of contactor is not switched on, two of the driving link 2 of this mechanism hooks 23 are hooked in the main contact support of contactor, block ball 3 by the lower surface 22 of jut 25 positions of axle 24.Auxiliary contact parts mounting means shown in this figure is: a ball 3 and a spring 4 are packed in the groove 12 of auxiliary contact support 1 successively, clog the end of this groove 12 with plug 5.
What Fig. 6 described is transmission mechanism schematic diagram (auxiliary contact support is working portion partial sectional view) in the time of disengaged condition of the auxiliary contact device that can temporarily contact.In the time that the control coil energising of contactor finishes main contact support campaign, mechanism is in this kind of state, and the jut 25 of driving link 2 departs from ball 3 completely, a position under it.
Below this auxiliary contact device mechanism action step and principle that can temporarily contact is described:
1. contact process: complete actuation cycle from this mechanism in the off-state shown in Fig. 5, when the control coil energising of contactor, main contact support drives the driving link 2 of this mechanism descending, jut 25 extruded beads 3 of the axle 24 on driving link 2, now, ball 3 is the lower surface 22 of the jut 25 of axle 24 with the contact-making surface of axle 24, these lower surface 22 gradients are larger, need relatively large power if throw off, the power value that makes driving link 2 give ball 3 is not enough to Compress Spring 4 throws off lower surface 22 and ball 3, therefore auxiliary contact support 1 under the driving of driving link 2 descending certain stroke thereupon, until auxiliary contact supports 1 to drive dynamic auxiliary contact 7 to contact with quiet auxiliary contact, in this process, the active contact of contactor can not be connected with main fixed contact.
After dynamic auxiliary contact 7 contacts with quiet auxiliary contact, the main contact support of contactor still continues to move downward, arrive after certain stroke, the active contact of contactor and main fixed contact are connected, main contact support continues to move downward predetermined stroke again, arrive the spacing position (lower limit) of described casing and can not continue again mobile, now, the active contact of contactor and main fixed contact closure, the dynamic and static auxiliary contact of described mechanism still remains closed (position as shown in Figure 5).
2. disconnection process: contact and move to predetermined stroke with quiet auxiliary contact when auxiliary contact support 1 drives dynamic auxiliary contact 7, arrive the spacing position (lower limit) of described casing and can not continue again when mobile, driving link 2 still continues to move downward under the driving of the main contact support of contactor, now the lower surface 22 of the jut 25 of axle 24 produces relatively large power extruded bead 3, ball 3 pressuring springs 4, make spring 4 be compressed to certain stroke, ball 3 is along lower surface 22 certain stroke that slides, cross after the jut 25 (dead point) of axle 24, axle 24 is thrown off with ball 3, moving, quiet auxiliary contact disconnects, make driving link 2 and auxiliary contact support 1 separately, position when resetting after spring 4 does not stress and making ball 3 get back to nature, driving link 2 continues to move downward with main contact support, until main contact support is no longer moved.Auxiliary contact support 1 pops up original position and can not continue to move upward (upper limit) under the effect of reaction spring 8, thereby dynamic auxiliary contact 7 and quiet auxiliary contact are disconnected, realize disjunction after the temporary transient contact of dynamic and static auxiliary contact, now, the active contact of contactor, main fixed contact are still in closure state (position as shown in Figure 6).
3. reseting procedure: the control coil dead electricity of main contactor, the main contact support of contactor drives driving link 2 to move upward, when the upper surface 21 of the jut 25 of axle 24 on driving link 2 moves to ball 3 positions, auxiliary contact support 1 can not move up under upper limit effect, on driving link 2, the upper surface 21 of the jut 25 of axle 24 is oppressed ball 3, ball 3 pressuring springs 4, make spring 4 be compressed to certain stroke, ball 3 is along upper surface 21 certain stroke that slides, cross after the jut 25 (dead point) of axle 24, ball 3 rebounds under the pressure of spring, block the lower surface of jut 25, because upper surface 21 gradients are less, be easier at spring 4 compressed rear smoothly by steel ball 3, after jut 25 passes through, spring 4 resets and makes ball 3 get back to home position, position while making each several part be returned to nature the jut 25 and the ball 3 that remain on axle 24 on driving link 2 block state, now, auxiliary contact support 1 links together again (as shown in Figure 5) with driving link 2.In this process, dynamic and static auxiliary contact position does not change, still in disconnecting the disjunction position of process prescription, under the drive that the active contact of contactor is supported at main contact, move upward and disconnect with main fixed contact after certain stroke, thus, enter the initial state of next contact process.
In other embodiments of the invention:
Backstop in groove 12 also can be one of structure of square, cuboid, cylinder, cone, shuttle body, if can hooking driving link 2 can require to complete contact, disconnection, reset function in situation.
The flexible member that applies elastic force to backstop in groove 12 also can be shell fragment, as long as can and require in situation, backstop to be moved to the backstop application of force.
The above embodiments do not form any type of restriction to protection range of the presently claimed invention; claims of the present invention have covered all modifications and changes; therefore, making various modifications for above-described embodiment all belongs in protection scope of the present invention with changing.
Claims (3)
1. a transmission mechanism for the auxiliary contact device that can temporarily contact, comprises the auxiliary contact support of supporting dynamic auxiliary contact, it is characterized in that:
Described auxiliary contact support connects the driving link being driven by the main contact support of contactor by bindiny mechanism;
Described bindiny mechanism comprises:
The axis hole of vertically offering in described auxiliary contact support and the chute of laterally offering, chute is communicated with axis hole;
Flexible member and backstop, be contained in described chute, and flexible member is pushed backstop to axis hole;
Driving shaft, driving shaft is provided with projection, and the lower end of driving shaft is connected with described driving link;
Insert in described axis hole the upper end of driving shaft, and block backstop by the projection on driving shaft, realizes the coupled movements of main contact and the auxiliary contact device of contactor.
2. the transmission mechanism of the auxiliary contact device that can temporarily contact as claimed in claim 1, is characterized in that:
The lower end of described driving link is provided with the hook with the main contact Supporting connectivity of described contactor.
3. the transmission mechanism of the auxiliary contact device that can temporarily contact as claimed in claim 1, is characterized in that:
The upper and lower surface of the projection on described driving shaft is asymmetric, and the gradient of upper surface is less than the gradient of lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110192757.1A CN102881516B (en) | 2011-07-11 | 2011-07-11 | Transmission mechanism of auxiliary contact device capable of being temporarily contacted |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110192757.1A CN102881516B (en) | 2011-07-11 | 2011-07-11 | Transmission mechanism of auxiliary contact device capable of being temporarily contacted |
Publications (2)
| Publication Number | Publication Date |
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| CN102881516A CN102881516A (en) | 2013-01-16 |
| CN102881516B true CN102881516B (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110192757.1A Active CN102881516B (en) | 2011-07-11 | 2011-07-11 | Transmission mechanism of auxiliary contact device capable of being temporarily contacted |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106913212A (en) * | 2017-04-01 | 2017-07-04 | 江门市美兹智能科技有限公司 | One kind boils tea set automatically |
| CN107633980A (en) * | 2017-09-21 | 2018-01-26 | 天津市百利电气有限公司 | The DC control circuit A.C. contactor of lateral part auxiliary contact module can be installed |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1711619A (en) * | 2002-11-08 | 2005-12-21 | Abb接线端子公司 | Auxiliary contact block providing temporary contact |
| CN202172023U (en) * | 2011-07-11 | 2012-03-21 | 北京人民电器厂有限公司 | Transmission mechanism of auxiliary contact device capable of temporarily contacting |
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2011
- 2011-07-11 CN CN201110192757.1A patent/CN102881516B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1711619A (en) * | 2002-11-08 | 2005-12-21 | Abb接线端子公司 | Auxiliary contact block providing temporary contact |
| CN202172023U (en) * | 2011-07-11 | 2012-03-21 | 北京人民电器厂有限公司 | Transmission mechanism of auxiliary contact device capable of temporarily contacting |
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| CN102881516A (en) | 2013-01-16 |
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