A closing lock structure of a transfer switch

Abstract

The utility model relates to the technical field of conversion switches, and specifically to a closing lock structure of a conversion switch. The utility model comprises a switch body, wherein a square shaft is rotatably connected in the switch body, a lock buckle is fixedly connected to the square shaft, a lock head is fixedly connected to one end of the lock buckle, a lock groove is provided at the lower end of the lock head, and the inner wall of the lock groove is arranged in an arc shape. A closing mechanism is arranged in the switch body, the lock head is snap-fitted with the closing mechanism, a power drive component is fixedly connected to one end of the square shaft, and an auxiliary drive component is fixedly connected to the other end of the square shaft; the square shaft is driven to rotate by the power drive component, so that the square shaft drives the lock buckle to rotate, so that the lock head rotates, the lock groove is snap-fitted with the closing mechanism, a top-down lock buckle form is formed, and the disadvantage of bottom-up is abandoned; the auxiliary drive component assists the square shaft to drive the lock head to snap-fit ​​the closing mechanism, and the operation is more stable and reliable with comprehensive multiple assists, thereby improving the reliability of the conversion switch electrical appliance.

Description

Technical Field

[0001] The utility model relates to the field of transfer switches, in particular to a closing lock structure of a transfer switch. Background Art

[0002] A transfer switch is a low-voltage switch that switches multiple circuits. It has multiple moving contacts welded on the shaft. When the shaft rotates, the moving contacts connect or disconnect with the static contacts in turn, switching the circuit from one set of connections to another set of electrical appliances.

[0003] Existing switching electrical appliances often use electromagnets to drive the contact system. There are two structural forms of this type. One is a two-stage structure, in which a single electromagnet or a double electromagnet completes the entire conversion action. For these two structures, the electromagnet only needs to drive the energy storage mechanism through the middle starting point, and then the energy storage spring is released to complete the conversion between the contacts; the other is a three-stage structure. In addition to one-way closing and two-way closing, there is also an intermediate power-off position. The operating principle of this type of structure is generally that the main electromagnet is attracted to drive the transmission mechanism to drive the contact to one-way closing, and then the closing lock mechanism is required to maintain it, and the release electromagnet performs the two-way opening function, top release lock mechanism, and there is also a direction selection electromagnetic mechanism. When the one-way power is closed normally, this mechanism does not participate. Only when the two-way power is needed to close, the direction selection electromagnetic mechanism first acts with the main coil to guide the closing direction into the two-way track, and then the main coil drives the actuator to complete the two-way closing, and then the closing lock mechanism is maintained.

[0004] In the prior art, the closing lock structure in the transfer switch overcomes the gravity lock from bottom to top. Although it is held by a spring, when it is subjected to a certain amplitude of vibration or encounters an unpredictable earthquake disaster, the lock will slip, causing power outages, or frequent power on and off, so that the reliability of the transfer switch electrical appliance is lost.

[0005] Therefore, a closing lock structure of a transfer switch is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a closing lock structure of a transfer switch to solve the problems raised in the above background technology.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A closing lock structure of a transfer switch comprises a switch body, wherein a square shaft is rotatably connected inside the switch body, a lock is fixedly connected to the square shaft, a lock head is fixedly connected to one end of the lock head, a lock groove is provided at the lower end of the lock head, and the inner wall of the lock groove is arranged in an arc shape, a closing mechanism is arranged inside the switch body, the lock head is engaged with the closing mechanism, a power drive assembly is fixedly connected to one end of the square shaft, and an auxiliary drive assembly is fixedly connected to the other end of the square shaft.

[0009] Preferably, the power drive assembly includes a drive plate, which is fixed to one end of the square shaft, a drive member 1 is fixed to the switch body, a connecting arm is fixed to the output end of the drive member 1, and the end of the connecting arm is snap-fitted with the drive plate.

[0010] Preferably, a slot is provided at the upper end of the driving plate, a hook is fixedly connected to the end of the connecting arm, the hook is engaged with the slot, and a fixing block is fixedly connected to the side of the driving plate away from the closing mechanism.

[0011] Preferably, a partition is vertically fixed in the switch body, a slide groove 1 and a slide groove 2 are penetrated through the partition, the end of the hook is slidably matched with the slide groove 1, and the fixed block is slidably matched with the slide groove 2.

[0012] Preferably, the auxiliary drive assembly includes a drive frame, the drive frame is fixed on the square shaft, a drive member 2 is fixed in the switch body, the output end of the drive member 2 is rotatably connected to a rotating plate, the rotating plate abuts against the inner wall of the drive frame, a connecting rod is fixed to the middle of the drive frame, and a spring is fixed between the connecting rod and the tail of the drive member 2.

[0013] Preferably, a top plate is fixedly connected to the upper end of the connecting arm, a micro switch 2 is fixedly connected to the switch body, the top plate cooperates with the micro switch 2, a pressure plate is fixedly connected to the side wall of the driving frame, a micro switch 1 is fixedly connected to the switch body, and the pressure plate abuts and cooperates with the micro switch 1.

[0014] Beneficial effects of the utility model:

[0015] The utility model drives the square shaft to rotate through a power drive component, so that the square shaft drives the lock to rotate, and the lock head rotates, so that the lock groove is engaged with the closing mechanism to form a top-down lock buckle form, abandoning the disadvantage of bottom-up, and the auxiliary drive component assists the square shaft to drive the lock head to engage the closing mechanism. With the integrated multiple assists, the operation is more stable and reliable, and the reliability of the conversion switch electrical appliance is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the auxiliary drive assembly structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the lock and drive plate structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the partition structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the switch body of the utility model;

[0022] Figure 6 yes Figure 4 A schematic diagram of the structure at A;

[0023] The reference numerals in the figures are as follows:

[0024] 1. Switch body; 2. Square shaft; 3. Lock catch; 4. Lock slot; 5. Lock head; 6. Drive plate; 7. Slot; 8. Fixed block; 9. Drive member 1; 10. Connecting arm; 11. Hook; 12. Partition; 13. Slide slot 1; 14. Slide slot 2; 16. Drive frame; 17. Press plate; 18. Micro switch 1; 19. Drive member 2; 20. Rotating plate; 21. Spring; 22. Connecting rod; 23. Top plate; 24. Micro switch 2; 25. Closing mechanism. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] A closing lock structure of a transfer switch, such as Figure 1-Figure 6 As shown, it includes a switch body 1, in which a square shaft 2 is rotatably connected, a lock buckle 3 is fixedly connected to the square shaft 2, a lock head 5 is fixedly connected to one end of the lock buckle 3, a lock groove 4 is provided at the lower end of the lock head 5, and the inner wall of the lock groove 4 is arranged in an arc shape, a closing mechanism 25 is arranged in the switch body 1, the lock head 5 is snap-fitted with the closing mechanism 25, a power drive assembly is fixedly connected to one end of the square shaft 2, and an auxiliary drive assembly is fixedly connected to the other end of the square shaft 2.

[0027] The utility model drives the conversion switch to operate through the structure in the switch body 1. The closing mechanism 25 in the switch body 1 controls the opening and closing of the switch body 1. The closing lock 3 structure is used to lock the closing mechanism 25 to ensure the stability of the state of the closing mechanism 25. The square shaft 2 is driven to rotate by the power drive component, so that the square shaft 2 drives the lock 3 to rotate, and the lock head 5 is rotated. When the closing mechanism 25 runs to a certain state, the lock groove 4 and the closing mechanism 25 are engaged and matched to form a top-down lock 3 form, eliminating the disadvantage of bottom-up, and the auxiliary drive component assists the square shaft 2 to drive the lock head 5 to engage the closing mechanism 25. With the comprehensive multiple assists, the operation is more stable and reliable, and the reliability of the conversion switch electrical appliance is improved.

[0028] The power drive assembly includes a drive plate 6, which is fixed to one end of the square shaft 2. A drive member 9 is fixed to the switch body 1, and a connecting arm 10 is fixed to the output end of the drive member 9. The end of the connecting arm 10 is snap-fitted with the drive plate 6.

[0029] like Figure 2-Figure 5 As shown, the driving member 9 drives the connecting arm 10 forward or backward, so that the connecting arm 10 drives the driving plate 6 to rotate (the connection between the connecting arm 10 and the driving plate 6 has a certain control), and the driving plate 6 drives the square shaft 2 to rotate, so that the lock buckle 3 rotates and operates.

[0030] The driving plate 6 has a slot 7 at its upper end, a hook 11 is fixedly connected to the end of the connecting arm 10 , and the hook 11 is engaged with the slot 7 . A fixing block 8 is fixedly connected to the side of the driving plate 6 away from the closing mechanism 25 .

[0031] like Figure 2-Figure 5 As shown, the connecting arm 10 is engaged with the driving plate 6 by means of the hook 11 and the slot 7. There is a certain gap between the hook 11 and the slot 7, so that the movement of the connecting arm 10 will drive the driving plate 6 to rotate, and the fixing block 8 limits the rotation of the driving plate 6.

[0032] A partition 12 is vertically fixed in the switch body 1 , and a first slide groove 13 and a second slide groove 14 are formed through the partition 12 . The end of the hook 11 is slidably matched with the first slide groove 13 , and the fixing block 8 is slidably matched with the second slide groove 14 .

[0033] like Figure 4-Figure 6 As shown, the hook 11 and the fixing block 8 are slidably matched with the first slide groove 13 and the second slide groove 14 respectively, so as to limit the rotation degree and stability of the driving plate 6.

[0034] The auxiliary drive assembly includes a drive frame 16, which is fixed to the square shaft 2. A drive member 19 is fixed inside the switch body 1. A rotating plate 20 is rotatably connected to the output end of the drive member 19. The rotating plate 20 abuts against the inner wall of the drive frame 16. A connecting rod 22 is fixed to the middle of the drive frame 16. A spring 21 is fixed between the connecting rod 22 and the tail of the drive member 19.

[0035] like Figure 1-Figure 2 , Figure 4-Figure 5 As shown, the operation of the driving member 19 will drive the rotating plate 20 to rotate, and the end of the rotating plate 20 will abut the driving frame 16, controlling the driving frame 16 to rotate, so that the driving frame 16 drives the square shaft 2 to rotate, and the square shaft 2 drives the lock head 5 to disengage from the closing mechanism 25, and the spring 21 is always in a stretched state. When the rotating plate 20 is not abutting against the driving frame 16, the spring 21 will pull the driving frame 16 to rotate in the opposite direction, so that the driving frame 16 drives the square shaft 2 to rotate in the opposite direction, and double cooperates with the power drive component, double assists the square shaft 2, and improves the reliability of the closing lock.

[0036] A top plate 23 is fixedly connected to the upper end of the connecting arm 10, a micro switch 2 24 is fixedly connected inside the switch body 1, the top plate 23 cooperates with the micro switch 2 24, a pressure plate 17 is fixedly connected to the side wall of the driving frame 16, a micro switch 1 18 is fixedly connected inside the switch body 1, and the pressure plate 17 abuts and cooperates with the micro switch 1 18.

[0037] like Figure 1-Figure 6 As shown, the movement of the connecting arm 10 triggers the micro switch 2 24 , and the rotation of the driving frame 16 causes the pressing plate 17 to trigger the micro switch 1 18 .

[0038] The working principle of the closing lock structure of a transfer switch provided by the utility model is as follows:

[0039] The square shaft 2 is driven to rotate by the power drive component, so that the square shaft 2 drives the lock 3 to rotate, and the lock head 5 is rotated. When the closing mechanism 25 runs to a certain state, the lock groove 4 and the closing mechanism 25 are engaged and matched to form a top-down lock 3 form, eliminating the disadvantage of bottom-up, and the auxiliary drive component assists the square shaft 2 to drive the lock head 5 to engage the closing mechanism 25. With the comprehensive multiple assists, the operation is more stable and reliable, and the reliability of the switching electrical appliance is improved.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A closing lock structure of a transfer switch, comprising a switch body (1), characterized in that: A square shaft (2) is rotatably connected in the switch body (1), a lock buckle (3) is fixedly connected to the square shaft (2), a lock head (5) is fixedly connected to one end of the lock buckle (3), a lock groove (4) is provided at the lower end of the lock head (5), the inner wall of the lock groove (4) is arranged in an arc shape, a closing mechanism (25) is arranged in the switch body (1), the lock head (5) and the closing mechanism (25) are engaged in a snap-fit ​​manner, a power drive assembly is fixedly connected to one end of the square shaft (2), and an auxiliary drive assembly is fixedly connected to the other end of the square shaft (2).

2. A closing lock structure of a transfer switch according to claim 1, characterized in that: The power drive assembly comprises a drive plate (6), the drive plate (6) is fixedly connected to one end of the square shaft (2), a drive member 1 (9) is fixedly connected inside the switch body (1), a connecting arm (10) is fixedly connected to the output end of the drive member 1 (9), and the end of the connecting arm (10) is snap-fitted with the drive plate (6).

3. A closing lock structure of a transfer switch according to claim 2, characterized in that: A slot (7) is provided at the upper end of the driving plate (6); a hook (11) is fixedly connected to the end of the connecting arm (10); the hook (11) is engaged with the slot (7); and a fixing block (8) is fixedly connected to the side of the driving plate (6) away from the closing mechanism (25).

4. A closing lock structure of a transfer switch according to claim 3, characterized in that: A partition (12) is vertically fixed inside the switch body (1), a first slide groove (13) and a second slide groove (14) are formed through the partition (12), an end of the hook (11) is slidably matched with the first slide groove (13), and a fixed block (8) is slidably matched with the second slide groove (14).

5. The closing lock structure of a transfer switch according to claim 2, characterized in that: The auxiliary drive assembly comprises a drive frame (16), the drive frame (16) is fixedly connected to the square shaft (2), a second drive member (19) is fixedly connected inside the switch body (1), an output end of the second drive member (19) is rotatably connected to a rotating plate (20), the rotating plate (20) is in abutment with an inner wall of the drive frame (16), a connecting rod (22) is fixedly connected to the middle of the drive frame (16), and a spring (21) is fixedly connected between the connecting rod (22) and the tail of the second drive member (19).

6. A closing lock structure of a transfer switch according to claim 5, characterized in that: The upper end of the connecting arm (10) is fixedly connected to a top plate (23), a micro switch 2 (24) is fixedly connected to the switch body (1), the top plate (23) cooperates with the micro switch 2 (24), a pressing plate (17) is fixedly connected to the side wall of the driving frame (16), a micro switch 1 (18) is fixedly connected to the switch body (1), and the pressing plate (17) abuts against and cooperates with the micro switch 1 (18).

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