CN218918741U - External reset switch of thermal relay cabinet - Google Patents
External reset switch of thermal relay cabinet Download PDFInfo
- Publication number
- CN218918741U CN218918741U CN202222639413.7U CN202222639413U CN218918741U CN 218918741 U CN218918741 U CN 218918741U CN 202222639413 U CN202222639413 U CN 202222639413U CN 218918741 U CN218918741 U CN 218918741U
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- thermal relay
- cabinet
- switch
- guide sleeve
- cabinet body
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Abstract
The utility model discloses an external reset switch of a thermal relay cabinet, which is used for resetting a reset button of the thermal relay in a cabinet body operated outside the cabinet body, wherein an accommodating space is formed in the cabinet body, the surface of the cabinet body is provided with a mounting hole communicated with the accommodating space, the external reset switch of the thermal relay cabinet comprises a guide sleeve, a switch and a transmission component, the guide sleeve is arranged in the accommodating space, one end of the guide sleeve is arranged on the inner surface of the cabinet body corresponding to the mounting hole, the other end of the guide sleeve extends to the upper part of the reset button of the thermal relay, the switch is movably arranged in the guide sleeve, a first magnetic part is arranged at the bottom of the switch, the transmission component is movably arranged in the guide sleeve and is positioned below the first magnetic part, the transmission component comprises a transmission mechanism and a second magnetic part arranged at the upper end of the transmission mechanism, and the polarity of the second magnetic part is identical with that of the first magnetic part and is used for driving the reset button of the thermal relay under the transmission mechanism.
Description
Technical Field
The utility model relates to the technical field of explosion-proof fans, in particular to an external reset switch of a thermal relay cabinet.
Background
When the explosion-proof fan or other electrical equipment and the electrical circuit are overloaded, the thermal relay protects the fan motor and other electrical equipment from overload, and the thermal relay protects the circuit between the contactor and the motor and other electrical equipment from overload. After overload faults are relieved, the thermal relay needs to be reset, so that the circuit operates normally.
At present, a control mode of manual reset in a cabinet is basically adopted for resetting a thermal relay, an explosion-proof control box or an electric cabinet door is required to be opened to realize on-off control of a controlled circuit, a special box opening tool is generally required to be used, loss is caused by a delay period when the thermal relay cannot be operated in time, an explosion-proof control box cover plate is frequently opened, an explosion-proof control box explosion-proof surface and a threaded hole are easily damaged, and the operation safety and the electric safety of the mode have installation hidden dangers and defects.
Disclosure of Invention
The main purpose of the utility model is to provide the external reset switch of the thermal relay cabinet, so that the thermal relay resetting operation is conveniently realized outside the explosion-proof control cabinet, and the operation convenience and the electrical safety are optimized.
In order to achieve the above object, the present utility model provides an external reset switch of a thermal relay cabinet, for resetting a reset button of a thermal relay in a cabinet body operated outside the cabinet body, wherein an accommodating space is formed inside the cabinet body, and a mounting hole communicating with the accommodating space is formed on the surface of the cabinet body, and the external reset switch of the thermal relay cabinet is characterized in that:
the guide sleeve is arranged in the accommodating space, one end of the guide sleeve is arranged on the inner surface of the cabinet body corresponding to the mounting hole, and the other end of the guide sleeve extends to the position above the reset button of the thermal relay;
the switch is movably arranged in the guide sleeve, at least one part of the switch is arranged in the mounting hole in a penetrating way through the shaft sleeve so as to be convexly arranged on the outer surface of the cabinet body, and a first magnetic piece is arranged at the bottom of the switch; and
the transmission assembly is movably arranged in the guide sleeve and positioned below the first magnetic piece, the transmission assembly comprises a transmission mechanism and a second magnetic piece arranged at the upper end of the transmission mechanism, the polarity of the second magnetic piece is the same as that of the first magnetic piece, and the second magnetic piece is used for driving the transmission mechanism to press down a reset button of the thermal relay.
Optionally, the drive mechanism includes fly leaf, clamp plate and connection the fly leaf with the connecting rod of clamp plate, the fly leaf up end is equipped with the second magnetic part, the clamp plate is located the reset button top of thermal relay, the clamp plate can be pushed down on its movable stroke the reset button of thermal relay.
Optionally, the transmission mechanism further comprises a first sliding rail installed on the inner cavity wall of the guide sleeve, first sliding blocks extending to the outer sides of the first sliding rails are movably installed in the first sliding rail, and one ends, far away from the first sliding rails, of the first sliding blocks are connected with the movable plate; and/or
The transmission mechanism further comprises a second sliding rail arranged on the inner cavity wall of the guide sleeve, second sliding blocks extending to the outer sides of the second sliding rails are movably arranged in the second sliding rails, and one ends, away from the second sliding rails, of the second sliding blocks are connected with the pressing plates.
Optionally, the transmission mechanism further includes a first elastic arm, where the first elastic arm is disposed on the inner cavity wall of the guide sleeve and located below the movable plate, and is configured to abut against the movable plate upwards.
Optionally, an elastic rubber pad is arranged on the lower end face of the pressing plate.
Optionally, the external reset switch of the thermal relay cabinet further comprises a guide seat, and the guide seat is arranged on the external surface of the cabinet body corresponding to the mounting hole;
the switch penetrates through the guide seat to be convexly arranged on the outer surface of the cabinet body.
Optionally, the guide seat is provided with a first assembly hole, and the outer surface of the cabinet body is provided with a first connection hole;
the external reset switch of the thermal relay cabinet further comprises a first locking piece, wherein the first locking piece penetrates through the first connecting hole and is fixedly inserted into the first assembly hole in a plugging mode, so that the guide seat is locked with the cabinet body.
Optionally, a flange is formed on the outer wall of one end, close to the inner surface of the cabinet body, of the guide sleeve in a radial protruding manner, a second assembly hole is formed in the flange, and a second connection hole is formed in the inner surface of the cabinet body;
the external reset switch of the thermal relay cabinet further comprises a second locking piece, wherein the second locking piece penetrates through the second connecting hole and is fixedly inserted into the second assembling hole in a plugging mode, so that the guide sleeve is locked with the cabinet body.
Optionally, the transmission mechanism further includes a second elastic arm, where the second elastic arm is disposed on the inner cavity wall of the guide sleeve and is located below the switch, and is configured to abut against the switch upwards.
Optionally, an anti-slip layer is arranged at one end of the switch, which is protruded from the outer surface of the cabinet body.
According to the external reset switch of the thermal relay cabinet, the first magnetic part arranged at the bottom of the switch is repulsed from the second magnetic part arranged at the upper end of the transmission mechanism, and after the switch is pressed, the second magnetic part drives the transmission mechanism to press the reset button of the thermal relay in the pressing stroke of the first magnetic part.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an embodiment of an external reset switch of a thermal relay cabinet according to the present utility model.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
When the explosion-proof fan or other electrical equipment and the electrical circuit are overloaded, the thermal relay protects the fan motor and other electrical equipment from overload, and the thermal relay protects the circuit between the contactor and the motor and other electrical equipment from overload. After overload faults are relieved, the thermal relay needs to be reset, so that the circuit operates normally.
At present, a control mode of manual reset in a cabinet is basically adopted for resetting a thermal relay, an explosion-proof control box or an electric cabinet door is required to be opened to realize on-off control of a controlled circuit, a special box opening tool is generally required to be used, loss is caused by a delay period when the thermal relay cannot be operated in time, an explosion-proof control box cover plate is frequently opened, an explosion-proof control box explosion-proof surface and a threaded hole are easily damaged, and the operation safety and the electric safety of the mode have installation hidden dangers and defects.
In view of this, the present utility model proposes an external reset switch 1000 of a thermal relay cabinet, and fig. 1 is an embodiment of the present utility model.
The utility model discloses an external reset switch 1000 of a thermal relay cabinet, which is used for resetting a thermal relay in an external operation cabinet body of the cabinet body, wherein an accommodating space is formed in the internal part of the cabinet body, an installation hole communicated with the accommodating space is formed in the surface of the cabinet body, the external reset switch 1000 of the thermal relay cabinet comprises a guide sleeve 1, a switch 2 and a transmission component 3, the guide sleeve 1 is arranged in the accommodating space, one end of the guide sleeve is arranged on the internal surface of the cabinet body corresponding to the installation hole, the other end of the guide sleeve extends to the upper part of a reset button 9 of the thermal relay, the switch 2 is movably arranged in the guide sleeve 1, at least one part of the switch 2 is arranged in the installation hole in a penetrating way so as to be convexly arranged on the external surface of the cabinet body through a shaft sleeve 7, a first magnetic piece 21 is arranged at the bottom of the switch 2, the transmission component 3 is movably arranged in the guide sleeve 1 and is positioned below the first magnetic piece 21, the transmission component 3 comprises a transmission mechanism 32 and a second magnetic piece 31 arranged at the upper end of the transmission mechanism 32, and the second magnetic piece 31 has the same polarity as the first magnetic piece 21 and is used for driving the transmission mechanism 32 to press the reset button 9 of the thermal relay.
According to the external reset switch 1000 of the thermal relay cabinet, the first magnetic piece 21 arranged at the bottom of the switch 2 and the second magnetic piece 31 arranged at the upper end of the transmission mechanism 32 are repulsed, after the switch 2 is pressed, the second magnetic piece 31 can drive the transmission mechanism 32 to press the reset button 9 of the thermal relay in the pressing stroke of the first magnetic piece 21.
Further, referring to fig. 1, the transmission mechanism 32 includes a movable plate 321, a pressing plate 322, and a connecting rod 323 connecting the movable plate 321 and the pressing plate 322, the upper end surface of the movable plate 321 is provided with the second magnetic member 31, the pressing plate 322 is disposed above the reset button 9 of the thermal relay, the pressing plate 322 can press the reset button 9 of the thermal relay on the movable stroke thereof, it is understood that when the first magnetic member 21 drives the second magnetic member 31 to move downward due to repulsive force, the movable plate 321 and the connecting rod 323 can drive the pressing plate 322 to move downward simultaneously, and because the pressing plate 322 is located right above the reset button 9 of the thermal relay and the thermal relay reset button is located on the movable stroke of the pressing plate 322, the pressing plate 322 can drive the thermal relay reset button to press to the passage state, so as to realize the reset of the thermal relay, and the thermal relay has a simple structure and is convenient to manufacture.
In order to facilitate the movable plate 321, the pressing plate 322 and the connecting rod 323 move in the sleeve, the transmission mechanism 32 further comprises a first sliding rail installed on the inner cavity wall of the guide sleeve 1, the first sliding rail is movably provided with a first sliding block extending to the outer side of the first sliding rail, one end of the first sliding block away from the first sliding rail is connected with the movable plate 321, the transmission mechanism 32 further comprises a second sliding rail installed on the inner cavity wall of the guide sleeve 1, the second sliding rail is movably provided with a second sliding block extending to the outer side of the second sliding rail, one end of the second sliding block away from the second sliding rail is connected with the pressing plate 322, and generally speaking, the first sliding rail, the first sliding block, the second sliding rail and the second sliding block can be alternatively used, but under the condition that the movement stroke of the transmission mechanism 32 is too large, the sliding effect is ensured, and the transmission mechanism can also be used as the guide mechanism. It should be further noted that, first slide rail with second slide rail fixed mounting in on the telescopic inner chamber wall, its fixed mode has a plurality of, if can with the integrative casting of guide sleeve 1 or injection moulding, be convenient for process manufacturing, also can utilize fastener such as screw to punch the installation through the helicitic texture, be applicable to the great condition of canceling release mechanical system structure. The thermal relay reset button is characterized in that a stop block can be arranged on the sliding rail to limit the moving stroke of the sliding block, so that the limiting and positioning effects are achieved, and the thermal relay reset button is prevented from being damaged due to overlarge moving stroke.
For convenience the external reset switch 1000 of thermal relay cabinet can repeatedly realize the reset function, drive mechanism 32 still includes first elastic arm 324, first elastic arm 324 is located on the inner chamber wall of guide sleeve 1, and is located fly leaf 321 below is used for upwards supporting fly leaf 321. The present utility model does not limit the material used for manufacturing the first elastic arm 324, and may be an elastic material such as rubber or spring steel, so long as the elastic material is capable of being elastically deformed during the pressing process of the movable plate 321 to restore the movable plate 321 by using an elastic restoring force, and the first elastic arm 324 may be adhered to the inner cavity wall of the guide sleeve 1 through an adhesive during installation, or may be integrally cast or injection molded with the sliding rail, and it should be noted that the first elastic arm 324 needs to be selected into different shapes and structures according to the movable stroke of the movable plate 321 so as to achieve a restoring effect, and if the movable plate 321 has a shorter stroke, the first elastic arm 324 may be disposed parallel to the lower end surface of the movable plate 321, and if the movable plate 321 is formed longer when the switch 2 is not pressed, the installation position may be properly moved downward, and the first elastic arm 324 may be disposed obliquely upward to form a certain installation angle with the inner wall surface of the guide sleeve 1 so as to provide a larger restoring stroke.
In order to avoid the influence of the long-term use of the magnetic weakening on the reset effect of the switch 2, the transmission mechanism 32 further includes a second elastic arm 325, where the second elastic arm 325 is disposed on the inner cavity wall of the guide sleeve 1 and is located below the switch 2, so as to be used for abutting against the switch 2, and the installation manner or the structural shape of the second elastic arm 325 is the same as that of the first elastic arm 324, which is not described herein too.
In order to avoid collision and abrasion between the pressing plate 322 and the thermal relay reset button when the thermal relay reset button is used for a long time, an elastic rubber pad 8 is arranged on the lower end face of the pressing plate 322.
In order to avoid switch 2 produces rocking in order to influence when pressing outside the cabinet first magnetic part 21 with second magnetic part 31 counterpoint, thermal relay cabinet external reset switch 1000 still includes guide holder 4, guide holder 4 corresponds the mounting hole is located on the cabinet external surface, switch 2 runs through guide holder 4 is located with protruding the cabinet external surface, guide holder 4 can play better guide effect, makes when the manual work pushes down switch 2, switch 2 can be followed the extending direction of guide holder 4 is removed, with first magnetic part 21 with second magnetic part 31 counterpoint is more accurate, improves reset accuracy.
The guide seat 4 is fixed on the cabinet body for the side, a first assembly hole is formed in the guide seat 4, a first connection hole is formed in the outer surface of the cabinet body, the thermal relay cabinet outer reset switch 1000 further comprises a first locking piece 5, the first locking piece 5 penetrates through the first connection hole and is fixedly inserted into the first assembly hole in a plugging mode, the guide seat 4 and the cabinet body are locked, the first locking piece 5 can be a screw or a buckle, the first locking piece is not limited specifically, in one embodiment of the utility model, a threaded structure is arranged in the first connection hole, the first locking piece 5 is a screw, and the guide seat 4 is fixed on the cabinet body through the screw and the threaded structure, and the structure is simple and the strength is high.
In order to facilitate the installation of the guide sleeve 1 on the inner surface of the cabinet, a flange is formed by radially protruding the outer wall of one end, close to the inner surface of the cabinet, of the guide sleeve 1, a second assembly hole is formed in the flange, a second connection hole is formed in the inner surface of the cabinet, the thermal relay cabinet external reset switch 1000 further comprises a second locking piece 6, the second locking piece 6 penetrates through the second connection hole and is fixedly inserted into the second assembly hole so as to lock the guide sleeve 1 with the cabinet, the second locking piece 6 can be a screw or a buckle, and in particular, in one embodiment of the utility model, a threaded structure is arranged in the second connection hole, the second locking piece 6 is a screw, and the guide sleeve 1 is fixed on the cabinet through the screw and the threaded structure, so that the structure is simple and the strength is high.
In order to improve the contact sensitivity of the switch 2, an anti-slip layer is arranged at one end of the switch 2, which is highlighted on the outer surface of the cabinet body, and the anti-slip layer can be coated on the surface of the switch 2 by adopting anti-slip paint, such as common phenolic aldehyde, acrylic acid or CPC anti-slip agent, and the like, and when in use, wear-resistant aggregate, such as rubber and plastic particles, is added according to a proportion, so that the anti-slip performance can be improved, and the slipping condition can not occur when in use, and the manual operation is influenced.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. The utility model provides a thermal relay cabinet external reset switch for the reset button of the internal thermal relay of cabinet body operation cabinet resets outside the cabinet body, the internal accommodation space that is formed with of cabinet, cabinet body surface is equipped with the intercommunication accommodation space's mounting hole, its characterized in that, thermal relay cabinet external reset switch includes:
the guide sleeve is arranged in the accommodating space, one end of the guide sleeve is arranged on the inner surface of the cabinet body corresponding to the mounting hole, and the other end of the guide sleeve extends to the position above the reset button of the thermal relay;
the switch is movably arranged in the guide sleeve, at least one part of the switch is arranged in the mounting hole in a penetrating way through the shaft sleeve so as to be convexly arranged on the outer surface of the cabinet body, and a first magnetic piece is arranged at the bottom of the switch; and
the transmission assembly is movably arranged in the guide sleeve and positioned below the first magnetic piece, the transmission assembly comprises a transmission mechanism and a second magnetic piece arranged at the upper end of the transmission mechanism, the polarity of the second magnetic piece is the same as that of the first magnetic piece, and the second magnetic piece is used for driving the transmission mechanism to press down a reset button of the thermal relay.
2. The external reset switch of a thermal relay cabinet according to claim 1, wherein the transmission mechanism comprises a movable plate, a pressing plate and a connecting rod for connecting the movable plate and the pressing plate, the second magnetic piece is arranged on the upper end face of the movable plate, the pressing plate is arranged above a reset button of the thermal relay, and the pressing plate can press the reset button of the thermal relay on the movable stroke of the pressing plate.
3. The external reset switch of a thermal relay cabinet according to claim 2, wherein the transmission mechanism further comprises a first sliding rail arranged on the inner cavity wall of the guide sleeve, first sliding blocks extending to the outer sides of the first sliding rails are movably arranged in the first sliding rails, and one ends of the first sliding blocks, far away from the first sliding rails, are connected with the movable plate; and/or
The transmission mechanism further comprises a second sliding rail arranged on the inner cavity wall of the guide sleeve, second sliding blocks extending to the outer sides of the second sliding rails are movably arranged in the second sliding rails, and one ends, away from the second sliding rails, of the second sliding blocks are connected with the pressing plates.
4. The external reset switch of claim 2 wherein said actuator further comprises a first spring arm disposed on the wall of said guide sleeve cavity and below said movable plate for urging said movable plate upward.
5. The external reset switch of claim 2, wherein the lower end surface of the pressing plate is provided with an elastic rubber pad.
6. The external reset switch of claim 1, further comprising a guide seat, wherein the guide seat is arranged on the external surface of the cabinet body corresponding to the mounting hole;
the switch penetrates through the guide seat to be convexly arranged on the outer surface of the cabinet body.
7. The external reset switch of claim 6, wherein the guide seat is provided with a first assembly hole, and the external surface of the cabinet body is provided with a first connection hole;
the external reset switch of the thermal relay cabinet further comprises a first locking piece, wherein the first locking piece penetrates through the first connecting hole and is fixedly inserted into the first assembly hole in a plugging mode, so that the guide seat is locked with the cabinet body.
8. The external reset switch of a thermal relay cabinet according to claim 1, wherein a flange is formed on the outer wall of one end, close to the inner surface of the cabinet body, of the guide sleeve in a radial protruding manner, a second assembly hole is formed in the flange, and a second connection hole is formed in the inner surface of the cabinet body;
the external reset switch of the thermal relay cabinet further comprises a second locking piece, wherein the second locking piece penetrates through the second connecting hole and is fixedly inserted into the second assembling hole in a plugging mode, so that the guide sleeve is locked with the cabinet body.
9. The external reset switch of claim 1 wherein said actuator further comprises a second spring arm disposed on the interior wall of said guide sleeve and below said switch for urging said switch upwardly.
10. The thermal relay cabinet external reset switch of claim 1 wherein one end of said switch protruding from said cabinet external surface is provided with an anti-slip layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222639413.7U CN218918741U (en) | 2022-09-30 | 2022-09-30 | External reset switch of thermal relay cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222639413.7U CN218918741U (en) | 2022-09-30 | 2022-09-30 | External reset switch of thermal relay cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218918741U true CN218918741U (en) | 2023-04-25 |
Family
ID=86048383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222639413.7U Active CN218918741U (en) | 2022-09-30 | 2022-09-30 | External reset switch of thermal relay cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218918741U (en) |
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2022
- 2022-09-30 CN CN202222639413.7U patent/CN218918741U/en active Active
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