Emergency starting device operating mechanism
By designing an emergency start device operating mechanism, the contactor can be manually closed in the event of a circuit fault through mechanical transmission, which solves the problem that traditional contactors cannot be connected when there is a power outage or a fault, thus ensuring the stable operation of the fire protection system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENYANG SIWO ELECTRICAL APPLIANCE CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-07-28
AI Technical Summary
Traditional contactors cannot connect when there is a power outage or malfunction in the control circuit, causing fire-fighting equipment to fail to start and the fire-fighting system to malfunction.
Design an emergency start device operating mechanism that closes the main contacts via mechanical transmission. The mechanism includes an upper housing, an upper cover, a moving contact system, a slider, a push rod, and a toggle device. A power storage mechanism drives a rotating shaft to quickly switch the contact state, ensuring that the contactor can be manually operated to close in the event of a circuit fault.
In the event of a circuit fault, the contactor can be manually operated to achieve stable closure, ensuring the normal operation of the fire protection system and avoiding the problem of the contactor failing to connect due to insufficient electromagnetic attraction.
Smart Images
Figure CN224569953U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of low-voltage electrical products, and in particular to an operating mechanism for an emergency start device. Background Technology
[0002] Contactors are widely used in the control circuits of fire cabinets. Their principle is that when the coil is energized, a magnetic field is generated inside. The attraction force generated by the magnetic field causes the armature and the iron core to be attracted together. Since the moving contact piece is fixed to the armature, it drives the moving and stationary contact pieces to connect, overcoming the spring reaction force, so that the main contacts close and the circuit is connected. When the coil is de-energized, the magnetic field disappears and the attraction force is lost. The reaction spring provides the repulsive force, the moving and stationary contact pieces separate, the main contacts open, and the circuit is broken.
[0003] Traditional contactors achieve their switching operations solely through coil energization and de-energization. This means that the contactor may fail to connect when the actual control circuit experiences a power outage or malfunction. In extreme situations such as fires that cause control circuit failures, the contactor may not be able to connect, preventing fire-fighting equipment from starting and rendering the fire protection system ineffective. Utility Model Content
[0004] To address the aforementioned problems, this utility model proposes an emergency start device operating mechanism. This operating mechanism allows the main contacts to be closed manually by management personnel when a power outage occurs due to a circuit fault or a problem with coil engagement. The main contacts are fully closed through mechanical conduction.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] An emergency start device operating mechanism is characterized in that it includes an upper housing, an upper cover covering a portion of the top surface of the upper housing, and a moving contact system located below the upper housing. The upper housing has a track in which a slider capable of moving along the track extension direction is installed. A horizontally penetrating guide groove is provided on the slider. The two extension ends of the guide groove are at different heights. A horizontally placed connecting shaft is installed in the guide groove.
[0007] The upper housing has hollow square holes on both sides of the track. A push rod is installed in each square hole. The push rod can slide vertically in the square hole. The two ends of the connecting shaft are fixedly connected to the two push rods respectively. The lower end of the push rod is connected to the moving contact system.
[0008] A toggle device is provided between the upper cover and the upper housing. The actuating end of the toggle device is connected to the slider to push the slider to move in the track, thereby changing the height of the push rod and switching the contact state of the moving contact system.
[0009] Preferably, the upper housing has support pillars around the square hole for guidance, and the push rod is installed in the support pillars.
[0010] Preferably, the slider has a slider groove, and the actuating end of the toggle device is located at the first end face and the second end face of the slider groove respectively when the moving contact system is in different states.
[0011] Preferably, the main body of the actuating device is a rotating shaft arranged perpendicular to the sliding direction of the slider. The rotating shaft is rotatably disposed between the upper cover and the upper housing. A first protrusion structure is provided on one side of the rotating shaft, and the first protrusion structure is the actuating end of the actuating device.
[0012] Preferably, the actuating device further includes a power storage mechanism for driving the rotating shaft to switch rapidly at the two ends of its rotational stroke.
[0013] Preferably, the power storage mechanism is a torsion spring, the first lever arm of which is connected to one of the upper cover and the upper housing, and the second lever arm of which is connected to the lever block, which slides in the elongated hole of the rotating shaft.
[0014] Preferably, the first protrusion of the rotating shaft is provided with an elongated hole, and a lever is provided in the elongated hole. The lever is disposed in the elongated hole, the first protrusion is in contact with the slider through the lever, and the second lever arm of the torsion spring is connected to the lever.
[0015] Preferably, the bottom surface of the upper cover is provided with a first limiting feature and a second limiting feature for limiting the position at the end of the rotation stroke of the rotating shaft.
[0016] Preferably, a micro switch is provided between the upper cover and the upper housing, and a second protrusion structure is provided on the rotating shaft. When the rotating shaft is at the end of one rotation stroke, the second protrusion structure triggers the micro switch.
[0017] The beneficial effects of using this utility model are:
[0018] The emergency start device operating mechanism proposed in this application allows for manual operation by management personnel to close the main contacts in the event of a power outage due to a circuit fault or a problem with coil engagement. The main contacts are fully closed via mechanical conduction, eliminating the need for a coil to generate a magnetic field that attracts the iron core and armature to close the moving contact system. This ensures the stable operation of the fire protection system even in the event of system circuit or coil failures. Attached Figure Description
[0019] Figure 1 An exploded view of the operating mechanism of the emergency activation device.
[0020] Figure 2 This is a top view of the emergency start device operating mechanism after the top cover is removed when the circuit breaker is in the open position.
[0021] Figure 3 This is a side view of the operating mechanism of the emergency start device when it is in the open state.
[0022] Figure 4 This is a side view of the emergency start device operating mechanism in the open position, from another perspective.
[0023] Figure 5 This is a bottom view of the top cover of the emergency start device operating mechanism when it is in the open position.
[0024] Figure 6 This is a top view of the emergency start device operating mechanism after the top cover is removed when the circuit is closed.
[0025] Figure 7 This is a side view of the operating mechanism of the emergency start device when the circuit is closed.
[0026] Figure 8 This is a side view of the emergency start device operating mechanism in the closed state from another perspective.
[0027] Figure 9 This is a bottom view of the top cover of the emergency start device operating mechanism when the circuit is closed.
[0028] The reference numerals in the figures include:
[0029] 1-Top cover, 11-First limiting feature, 12-Second limiting feature, 13-Round hole, 14-Top support, 2-Rotating shaft, 21-Elongated hole, 3-Torsion spring, 4-Push rod, 41-Push rod bottom surface, 5-Upper housing, 51-Square hole, 52-Support, 53-Railway, 6-Moving contact system, 7-Micro switch, 8-Connecting shaft, 9-Slider, 91-First position, 92-Second position, 93-First end face of slider groove, 94-Second end face of slider groove, 10-Toggle block. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of this technical solution clearer, the following detailed description, in conjunction with specific embodiments, further illustrates this technical solution. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this technical solution.
[0031] To address the problem in existing fire protection systems where the contactor cannot be activated due to control circuit failure, this embodiment proposes an emergency start device operating mechanism, specifically, as follows: Figure 1As shown, the emergency start device operating mechanism in this embodiment includes an upper housing 5, an upper cover 1, and a moving contact system 6. The upper housing 5 has a plate-like structure and forms part of the moving contact system 6. A straight track 53 extends from the center of the upper housing 5. Square holes 51 are provided on both sides of one end of the track 53. A guide structure is provided on the top surface of the upper housing 5 corresponding to the square holes 51. In this embodiment, the guide structure is a hollow columnar structure with a through end face. The shape and size of the hollow cross-section of the guide structure correspond to the shape and size of the cross-section of the square holes 51. A push rod 4 is correspondingly provided in the guide structure and the square holes 51. Through the guiding effect of the square holes 51 and the guide structure, the push rod 4 can move vertically within the square holes 51 and the guide structure.
[0032] A connecting shaft 8 is connected to the top of the two push rods 4. The function of the connecting shaft 8 is to synchronize the movement of the two push rods 4. Correspondingly, a slider 9 is provided in the track 53 of the upper housing 5. The slider 9 can move linearly along the extension direction of the track 53. In this embodiment, a horizontally penetrating guide groove is formed on the slider 9. The two extended ends of the guide groove are at different heights, and the connecting shaft 8 passes through the guide groove. In this embodiment, the guide groove is generally "S"-shaped, with the middle section inclined and the two ends horizontal at the two ends of the middle section.
[0033] In the above structure, when the drive slider 9 moves linearly in the track 53, the movement of the slider 9, due to the connection of the connecting shaft 8 passing through the guide groove, will cause the connecting shaft 8 to change its height position through the interaction between the guide groove and the outer wall of the connecting shaft 8. Since the connecting shaft 8 and the push rod 4 are rigidly connected, and the support column 52 and the square hole 51 provide vertical guidance for the push rod 4, the push rod 4 can only move up and down. The bottom surface 41 of the push rod at the lower end of the push rod 4 can then correspondingly push the contact point of the moving contact system 6 to change the contact state of the moving contact system 6.
[0034] An actuating device is provided between the upper cover 1 and the upper housing 5. The actuating end of the actuating device is connected to the slider 9 to push the slider 9 to move in the track 53, thereby changing the height of the push rod 4 and switching the contact state of the moving contact system 6.
[0035] Preferably, the slider 9 has a slider 9 groove. In different states of the moving contact system 6, the actuating end of the toggle device is located at the first end face 93 and the second end face 94 of the slider groove, respectively. This structure ensures that the actuating end of the toggle device remains in contact with the first end face 93 and the second end face 94 of the slider groove during its movement. This ensures that there is no play in the contact between the actuating end of the toggle device and the slider 9.
[0036] In a feasible embodiment, the main body of the toggle device is a rotating shaft 2 arranged perpendicular to the sliding direction of the slider 9. The rotating shaft 2 is rotatably arranged between the upper cover 1 and the upper housing 5. Specifically, the rotating shaft 2 passes through the through hole on the upper cover 1 and can rotate freely therein. A first protrusion structure is provided on one side of the rotating shaft 2. The first protrusion structure is a protrusion structure that extends perpendicular to the axis of the rotating shaft 2. The first protrusion structure is integrally formed with the rotating shaft 2. The first protrusion structure is the actuating end of the toggle device.
[0037] To enable the sliding action of the slider 9 by the actuating device to be performed quickly, the actuating device also includes a power storage mechanism, which drives the rotating shaft 2 to switch rapidly at the two ends of its rotation stroke. The power storage mechanism is a torsion spring 3. The first arm of the torsion spring 3 is connected to the upper cover 1, and the second arm of the torsion spring 3 is connected to the rotating shaft 2. The first protrusion structure of the rotating shaft 2 is provided with an elongated hole 21, in which a lever 10 is disposed. The lever 10 is disposed in the elongated hole 21, and the first protrusion structure contacts the slider 9 through the lever 10. The second arm of the torsion spring 3 is connected to the lever 10, and the lever 10 slides in the elongated hole of the rotating shaft 2. The first arm of the torsion spring 3 is installed in the circular hole 13 of the upper cover 1, and the second arm is fixed in the shaft hole of the lever 10.
[0038] A micro switch 7 is installed between the upper cover 1 and the upper housing 5. A second protruding structure is installed on the rotating shaft 2. When the rotating shaft 2 is at the end of one rotation stroke, the second protruding structure triggers the micro switch 7. The micro switch 7 is fixed on the support column 52 of the upper housing 5 and is fixed by the top support column 14 of the upper cover 1. The rotation of the rotating shaft 2 drives the second protruding structure to contact and trigger the micro switch 7. At this time, the operating mechanism of the emergency start device triggers the moving contact system 6 to close.
[0039] In order to limit the stroke of the rotating shaft 2, prevent the torsion spring 3 from over-extension and fail, and at the same time maintain the power storage capacity of the power storage mechanism, the bottom surface of the upper cover 1 is provided with a first limiting feature 11 and a second limiting feature 12 for limiting the position of the end of the rotation stroke of the rotating shaft 2.
[0040] As attached Figure 2 Appendix Figure 3 Appendix Figure 4 , Figure 5As shown, the switch is in the open position. In the open position, the toggle block 10 contacts the second end face 94 of the slider groove, which is tangent to the lower end of the elongated hole 21 of the rotating shaft 2. One end of the torsion spring 3 is fixed in the toggle block 10, and the other end is fixed in the round hole 13 of the upper cover 1. Due to the preload of the torsion spring 3, the rotating shaft 2 cannot rotate in the closing direction and has a tendency to rotate counterclockwise. However, the limiting feature on the upper cover 1 blocks the counterclockwise movement of the rotating shaft 2. The position of the rotating shaft 2 is fixed, and the slider 9 is located at the lower end of the track 53 on the upper housing 5. The connecting shaft 8 is connected to the push rod 4 and placed in the square hole 51 of the upper housing 5. At this time, the connecting shaft 8 is in the track 53 of the slider 9 and is in the first position 91. At this time, the bottom surface 41 of the push rod is just on the upper surface of the moving contact system in the open state, and no force is generated to push it downward. The contactor is in the open state.
[0041] As attached Figure 6 Appendix Figure 7 Appendix Figure 8 , Figure 9 As shown, the switch is in the closed position. In the closed position, the toggle block 10 is tangent to the first end face 93 of the slider groove of the slider 9 and to the upper end of the elongated hole 21 of the rotating shaft 2. One end of the torsion spring 3 is fixed in the toggle block 10, and the other end is fixed in the round hole 13 of the upper cover 1. Due to the supporting effect of the torsion spring 3, the rotating shaft 2 cannot rotate in the opening direction. Because the torsion spring 3 has preload, the rotating shaft 2 has a tendency to rotate clockwise, but the limiting feature on the upper cover 1 blocks the clockwise movement of the rotating shaft 2. The position of the rotating shaft 2 is fixed, and the slider 9 is located at the upper end of the track 53 on the upper housing 5. The connecting shaft 8 is connected to the push rod 4 and placed in the square hole 51 of the upper housing 5. At this time, the connecting shaft 8 is in the second position 92 in the slider 9. Compared with the open state, the bottom surface 41 of the push rod is in close contact with the upper surface of the moving contact system and pushes it to move downward, and the contactor closes.
[0042] When the switch is closed, the rotating shaft 2 is rotated clockwise. When the toggle block 10 moves to contact the first end face 93 of the slider groove of the slider 9, the torsion spring 3 is compressed and stores energy. When the rotating shaft 2 continues to rotate clockwise, the torsion spring 3 releases energy, and the toggle block 10 quickly rotates clockwise to drive the slider 9 to slide upward. At this time, the connecting shaft 8 moves along the "S"-shaped guide structure of the slider 9, from the first position 91 to the second position 92, generating a downward thrust, which pushes the moving contact system 6 downward. When the rotating shaft 2 moves about 90°, the rotating shaft 2 coincides with the first limit feature 11 of the upper cover 1, and the switch is closed in place.
[0043] When the switch is opened, the rotating shaft 2 is rotated counterclockwise. When the toggle block 10 moves to contact the second end face 94 of the slider groove, the torsion spring 3 is compressed and stores energy. When the rotating shaft 2 continues to rotate counterclockwise, the torsion spring 3 releases energy, and the toggle block 10 quickly rotates counterclockwise to drive the slider 9 to move. At this time, the connecting shaft 8 moves along the "S"-shaped guide structure of the slider 9, from the second position 92 to the first position 91, and is in a gradually rising state. The pressure of the moving contact system 6 closing gradually disappears. When the rotating shaft 2 moves about 90°, the rotating shaft 2 coincides with the second limit feature 12 of the upper cover 1, the pressure of the moving contact system 6 closing completely disappears, and the switch is opened.
[0044] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0045] The above content is only a preferred embodiment of this utility model. For those skilled in the art, many changes can be made in the specific implementation and application scope based on the ideas of this technical content. As long as these changes do not depart from the concept of this utility model, they all fall within the protection scope of this patent.
Claims
1. An operating mechanism for an emergency start-up device, characterized in that: The device includes an upper housing, a cover covering a portion of the top surface of the upper housing, and a moving contact system located below the upper housing. The upper housing has a track in which a slider capable of moving along the track is installed. The slider has a horizontally penetrating guide groove with two extending ends at different heights. A transverse connecting shaft is installed in the guide groove. The upper housing has hollow square holes on both sides of the track. A push rod is installed in each square hole. The push rod can slide vertically in the square hole. The two ends of the connecting shaft are fixedly connected to the two push rods respectively. The lower end of the push rod is connected to the moving contact system. A toggle device is provided between the upper cover and the upper housing. The actuating end of the toggle device is connected to the slider to push the slider to move in the track, thereby changing the height of the push rod and switching the contact state of the moving contact system.
2. The emergency start-up device operating mechanism according to claim 1, characterized in that: The upper housing has support pillars around the square hole for guidance, and the push rod is installed in the support pillars.
3. The operating mechanism of the emergency start-up device according to claim 1, characterized in that: The slider has a slider groove, and in different states of the moving contact system, the actuating end of the toggle device is located at the first end face and the second end face of the slider groove, respectively.
4. The operating mechanism of the emergency start-up device according to any one of claims 1-3, characterized in that: The main body of the actuating device is a rotating shaft that is perpendicular to the sliding direction of the slider. The rotating shaft is rotatably disposed between the upper cover and the upper housing. A first protrusion structure is provided on one side of the rotating shaft, and the first protrusion structure is the actuating end of the actuating device.
5. The emergency start device operating mechanism according to claim 4, characterized in that: The actuating device also includes a power storage mechanism, which is used to drive the rotating shaft to switch rapidly at the two ends of its rotation stroke.
6. The emergency start-up device operating mechanism according to claim 5, characterized in that: The energy storage mechanism is a torsion spring. The first lever arm of the torsion spring is connected to one of the upper cover and the upper housing. The second lever arm of the torsion spring is connected to a lever block, which slides in the elongated hole of the rotating shaft.
7. The emergency start device operating mechanism according to claim 6, characterized in that: The first protrusion of the rotating shaft is provided with an elongated hole, and a lever is provided in the elongated hole. The lever is disposed in the elongated hole, and the first protrusion is in contact with the slider through the lever. The second lever arm of the torsion spring is connected to the lever.
8. The emergency start device operating mechanism according to claim 7, characterized in that: The bottom surface of the upper cover is provided with a first limiting feature and a second limiting feature for limiting the position at the end of the rotation stroke of the shaft.
9. The emergency start device operating mechanism according to claim 4, characterized in that: A micro switch is provided between the upper cover and the upper housing, and a second protrusion structure is provided on the rotating shaft. When the rotating shaft is at the end of one rotation stroke, the second protrusion structure triggers the micro switch.