Interlocking mechanism for low-voltage switch cabinet

Abstract

The utility model discloses an interlocking mechanism for a low-voltage switch cabinet, which comprises a cabinet body, a drawer and a closer, the drawer is slidably connected to the cabinet body, the closer is connected to the inner wall of the cabinet body, and the closer is located at one end of the drawer; a movable rod is arranged on the drawer, the movable rod is connected to the drawer in a sliding mode, a connecting plate is arranged at one end of the movable rod, and the movable rod is aligned to the closer; the method has the advantage of being convenient to operate.

Description

Technical Field

[0001] This utility model belongs to the technical field of low-voltage power distribution equipment, and in particular relates to an interlocking mechanism for low-voltage switchgear. Background Technology

[0002] In low-voltage withdrawable switchgear, the drawer unit is pushed to the main and auxiliary circuit connection position by the push-in mechanism. When the fixed circuit breaker uses the electric operating opening and closing mechanism, there is also a requirement to realize the function of mechanical interlocking of the drawer unit position operation to prevent misoperation.

[0003] Currently, the electric operating mechanism of the drawer unit relies on a three-position interlocking mechanism with an auxiliary switch. When the three-position interlocking mechanism is unlocked, the auxiliary switch is disconnected; when the unit enters the positioning position, the auxiliary switch is connected. When the circuit breaker is in the closed state, if the unlocking plate is pressed to unlock the three-position interlocking mechanism, the auxiliary switch is disconnected, and the electric operating mechanism opens the circuit breaker. In the above process, the operator needs to perform multiple operations to complete the drawer movement and the circuit breaker opening and closing operations, which is not convenient. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] In order to overcome the shortcomings of the prior art, this utility model provides an interlocking mechanism for low-voltage switchgear.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an interlocking mechanism for a low-voltage switchgear, comprising a cabinet, a drawer, and a closing device, wherein the drawer is slidably connected to the cabinet, the closing device is connected to the inner wall of the cabinet, and the closing device is located at one end of the drawer; a movable rod is provided on the drawer, the movable rod is slidably connected to the drawer, a connecting plate is provided at one end of the movable rod, and the movable rod is aligned with the closing device.

[0007] Furthermore, the closure device includes a connecting seat, a movable block, and a blade. The movable block is provided with a guide rod, the connecting seat is provided with a guide groove, the guide rod is inserted into the guide groove, and the connecting seat is provided with a groove corresponding to the blade.

[0008] Furthermore, the movable block is provided with a first spring, which abuts against the connecting seat.

[0009] Furthermore, the drawer side wall is provided with a first movable groove for the movable rod to move, a second movable groove is provided at one end of the first movable groove, a first push block is provided at one end of the movable rod, and the first push block is located in the second movable groove.

[0010] Furthermore, the movable rod is provided with a first slider, and the side wall of the first movable groove is provided with a slot for the first slider to move. A stop block is provided in the slot, and the stop block can move in the slot, and the trajectory of the stop block is perpendicular to the trajectory of the first slider.

[0011] Furthermore, a third movable groove is provided at the bottom of the slot, and a fourth movable groove is provided on the side wall of the drawer, which communicates with the third movable groove. An extension rod is provided at the bottom of the stop block, and the extension rod is located in the third movable groove. A second push block is provided on the inner wall of the cabinet, and the position of the second push block corresponds to the fourth movable groove. The second push block is provided with a bevel.

[0012] Furthermore, the connecting plate is equipped with a movable plate, which has a handle and is slidably connected to the connecting plate; the cabinet is equipped with a fixed plate, which has an L-shaped structure.

[0013] Furthermore, the movable plate is provided with a second slider, and the connecting plate is provided with a through groove for the second slider to move.

[0014] Furthermore, the connecting plate is provided with a support plate, the second slider is provided with a connecting rod, the connecting rod is located above the support plate, the support plate is provided with a second spring, and the second spring abuts against the connecting rod.

[0015] Furthermore, the inner wall of the cabinet is provided with a first positioning rod and a second positioning rod, which are respectively located at the top and bottom of the drawer. A third slider is provided at the bottom of the drawer, and a baffle is connected to the second positioning rod.

[0016] The advantage of this utility model is that it provides an interlocking mechanism for low-voltage switchgear that is easy to operate. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0018] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the interlocking mechanism for a low-voltage switchgear in one embodiment of the present invention.

[0021] Figure 2 for Figure 1 A bottom view of the interlocking mechanism for a low-voltage switchgear in the illustrated embodiment.

[0022] Figure 3 for Figure 1 A cross-sectional view of the movable rod of the interlocking mechanism for a low-voltage switchgear in the illustrated embodiment.

[0023] Figure 4 for Figure 3 Enlarged view of point A in the image.

[0024] Figure 5 for Figure 3 Enlarged view of point B in the image.

[0025] Figure 6 for Figure 1 A cross-sectional view of the closure device of the interlocking mechanism for a low-voltage switchgear in the illustrated embodiment.

[0026] Figure 7 for Figure 6 Enlarged view of point C in the image.

[0027] Figure 8 for Figure 1 A schematic diagram of the drawer sidewall of the interlocking mechanism for a low-voltage switchgear in the illustrated embodiment.

[0028] Figure 9 for Figure 8 Enlarged view of point D in the image.

[0029] Figure 10 for Figure 1 A schematic diagram of the back of the connecting plate of the interlocking mechanism for the low-voltage switchgear in the illustrated embodiment.

[0030] The meanings of the reference numerals in the figure are as follows:

[0031] 101. Cabinet body; 102. Drawer; 103. First positioning rod; 104. Fixed plate; 105. Connecting plate; 106. Movable plate; 107. Handle; 108. Baffle; 109. Third slider; 110. Second positioning rod; 111. Connecting seat; 112. Movable block; 113. Guide rod; 114. Blade; 115. Movable rod; 116. First push block; 117. First slider; 118. Stop block; 119. First spring; 120. Extension rod; 121. Slot; 122. Fourth movable slot; 123. Second push block; 124. Support plate; 125. Connecting rod; 126. Second spring. Detailed Implementation

[0032] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0033] It should also be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0034] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0035] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0036] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0037] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] like Figure 1-10 As shown, an interlocking mechanism for a low-voltage switchgear includes a cabinet 101, a drawer 102, and a closing device. The drawer 102 is slidably connected to the cabinet 101, and the closing device is connected to the inner wall of the cabinet 101, with the closing device located at one end of the drawer 102. A movable rod 115 is provided on the drawer 102, and the movable rod 115 is slidably connected to the drawer 102. A connecting plate 105 is provided at one end of the movable rod 115, and the movable rod 115 is aligned with the closing device.

[0039] Specifically, the closure device includes a connecting seat 111, a movable block 112, and a blade 114. The movable block 112 is provided with a guide rod 113, the connecting seat 111 is provided with a guide groove, the guide rod 113 is inserted into the guide groove, the connecting seat 111 is provided with a groove corresponding to the blade 114, and the movable block 112 is provided with a first spring 119, which abuts against the connecting seat 111.

[0040] The drawer 102 has a first movable groove on its side wall for the movable rod 115 to move. A second movable groove is provided at one end of the first movable groove. A first push block 116 is provided at one end of the movable rod 115. The first push block 116 is located in the second movable groove. When the drawer 102 is inside the cabinet 101, the closure device is located in the second movable groove.

[0041] The movable rod 115 is provided with a first slider 117, and the side wall of the first movable groove is provided with a slot 121 for the first slider 117 to move. A stop block 118 is provided in the slot 121, and the stop block 118 can move in the slot 121. The height of the first slider 117 is the same as the height of the stop block 118, and the height of the first slider 117 is half the height of the slot 121. The trajectory of the stop block 118 is perpendicular to the trajectory of the first slider 117, that is, the slider moves horizontally in the slot 121, and the stop block 118 moves vertically in the slot 121.

[0042] The bottom of the slot 121 is provided with a third movable slot, and the side wall of the drawer 102 is provided with a fourth movable slot 122 that communicates with the third movable slot. The bottom of the stop block 118 is provided with an extension rod 120, which is located in the third movable slot. The inner wall of the cabinet 101 is provided with a second push block 123, which is positioned corresponding to the fourth movable slot 122. The second push block 123 is provided with an inclined surface. The stop block 118 can only move vertically within the slot 121 and cannot be dislodged from the slot 121.

[0043] A movable plate 106 is provided on the connecting plate 105, and a handle 107 is provided on the movable plate 106. The movable plate 106 is slidably connected to the connecting plate 105. A fixed plate 104 is provided on the cabinet body 101. The fixed plate 104 has an L-shaped structure and is located above the connecting plate 105. When the drawer 102 is inside the cabinet body 101, when the movable plate 106 is above the connecting plate 105, the movable plate 106 abuts against the fixed plate 104 to fix the drawer 102 inside the cabinet body 101. When the movable plate 106 is below the connecting plate 105, the movable plate 106 is offset from the fixed plate 104, and the drawer 102 can be directly pulled out from the cabinet body 101.

[0044] Furthermore, the movable plate 106 is provided with a second slider, and the connecting plate 105 is provided with a through groove for the second slider to move; the connecting plate 105 is provided with a support plate 124, the second slider is provided with a connecting rod 125, the connecting rod 125 is located above the support plate 124, and the support plate 124 is provided with a second spring 126, which abuts against the connecting rod 125.

[0045] Furthermore, the inner wall of the cabinet 101 is provided with a first positioning rod 103 and a second positioning rod 110. The first positioning rod 103 and the second positioning rod 110 are respectively located at the top and bottom of the drawer 102. The bottom of the drawer 102 is provided with a third slider 109. A baffle 108 is connected to the second positioning rod 110. The second positioning rod 110 provides support for the drawer 102, and the first positioning rod 103 limits the drawer 102. The drawer 102 is clamped between the first positioning rod 103 and the second positioning rod 110, so that the drawer 102 can only move horizontally relative to the cabinet 101. The cooperation of the third slider 109 and the baffle 108 limits the maximum distance that the drawer 102 can move, preventing the drawer 102 from being completely pulled out of the cabinet 101. The baffle 108 is fixed to the second positioning rod 110 with screws. When it is necessary to disassemble the drawer 102, the drawer 102 can be directly removed from the cabinet 101 after the baffle 108 is removed.

[0046] When drawer 102 is pulled out, push handle 107 downwards. Handle 107 moves movable plate 106 to the lower position of connecting plate 105, where movable plate 106 is offset from fixed plate 104. Pull handle 107 to move it, which in turn moves movable rod 115. First push block 116 disengages from movable block 112. First spring 119 pushes movable block 112 to move, causing blade 114 to disengage from groove, disengaging the closure, and moving first slider 117. Pull the handle 107 outward from one end of the slot 121 to pull the drawer 102 out of the cabinet 101. After the drawer 102 moves, the second push block 123 moves out from the fourth movable slot 122, and the stop block 118 falls to the bottom of the slot 121, so that the stop block 118 is on one side of the first slider 117. The first slider 117 is clamped between the stop block 118 and the inner wall of the slot 121 and cannot move, thus fixing the handle 107 and preventing the movable rod 115 from moving relative to the drawer 102.

[0047] When the drawer 102 is pushed back, the handle 107 is pushed into the cabinet 101. Since the movable rod 115 is fixed, the entire drawer 102 moves into the cabinet 101. After the drawer 102 is reset, the second push block 123 enters the fourth movable slot 122 and pushes the extension rod 120 to move. The extension rod 120 drives the stop block 118 to move towards the top of the slot 121. The stop block 118 is offset from the first slider 117. The handle 107 is pushed again, and the movable rod 115 moves relative to the drawer 102. The first push block 116 pushes the movable block 112 to move, and the blade 114 is inserted into the groove. The closure closes. After the handle 107 is released, the second spring 126 pushes the movable plate 106 to rise. The movable plate 106 moves to the side of the fixed plate 104 to form a fit and fix the drawer 102.

[0048] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of this disclosure is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. An interlocking mechanism for a low-voltage switchgear, comprising a cabinet, a drawer, and a closing device, wherein the drawer is slidably connected to the cabinet, the closing device is connected to the inner wall of the cabinet, and the closing device is located at one end of the drawer; characterized in that: The drawer is equipped with a movable rod, which is slidably connected to the drawer. One end of the movable rod is equipped with a connecting plate, and the movable rod is aligned with the closing device.

2. The interlocking mechanism for low-voltage switchgear according to claim 1, characterized in that: The closure includes a connecting seat, a movable block, and a blade. The movable block is provided with a guide rod, the connecting seat is provided with a guide groove, the guide rod is inserted into the guide groove, and the connecting seat is provided with a groove corresponding to the blade.

3. The interlocking mechanism for low-voltage switchgear according to claim 2, characterized in that: The movable block is provided with a first spring, which abuts against the connecting seat.

4. The interlocking mechanism for low-voltage switchgear according to claim 1, characterized in that: The drawer sidewall is provided with a first movable groove for the movable rod to move, and a second movable groove is provided at one end of the first movable groove. A first push block is provided at one end of the movable rod, and the first push block is located in the second movable groove.

5. The interlocking mechanism for low-voltage switchgear according to claim 4, characterized in that: The movable rod is provided with a first slider, and the side wall of the first movable groove is provided with a slot for the first slider to move. A stop block is provided in the slot, and the stop block can move in the slot, and the trajectory of the stop block is perpendicular to the trajectory of the first slider.

6. The interlocking mechanism for low-voltage switchgear according to claim 5, characterized in that: The bottom of the slot is provided with a third movable slot, and the side wall of the drawer is provided with a fourth movable slot that communicates with the third movable slot. The bottom of the stop block is provided with an extension rod, which is located in the third movable slot. The inner wall of the cabinet is provided with a second push block, which is positioned corresponding to the fourth movable slot. The second push block is provided with an inclined surface.

7. The interlocking mechanism for low-voltage switchgear according to claim 1, characterized in that: The connecting plate is provided with a movable plate, and the movable plate is provided with a handle. The movable plate is slidably connected to the connecting plate. The cabinet is provided with a fixed plate, and the fixed plate has an L-shaped structure.

8. The interlocking mechanism for low-voltage switchgear according to claim 7, characterized in that: The movable plate is provided with a second slider, and the connecting plate is provided with a through groove for the second slider to move.

9. The interlocking mechanism for low-voltage switchgear according to claim 8, characterized in that: The connecting plate is provided with a support plate, the second slider is provided with a connecting rod, the connecting rod is located above the support plate, the support plate is provided with a second spring, and the second spring abuts against the connecting rod.

10. The interlocking mechanism for low-voltage switchgear according to claim 1, characterized in that: The cabinet has a first positioning rod and a second positioning rod on its inner wall. The first positioning rod and the second positioning rod are respectively located at the top and bottom of the drawer. The bottom of the drawer has a third slider. A baffle is connected to the second positioning rod.

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