Mechanical electrical interlocking device

Abstract

The utility model relates to the technical field of mechanical electrical interlocking, and discloses a mechanical electrical interlocking device which comprises a shell, two partition plates are fixed in the shell, the interior of the shell is divided into three cavities by the partition plates, a conductive mechanism is fixedly installed in one cavity and used for connecting two wires, and an opening and closing mechanism is arranged in the shell and used for connecting the two wires. One end of the opening and closing mechanism is located outside the shell, the other end of the opening and closing mechanism penetrates through the two cavities, then corresponds to the conductive mechanism and is used for controlling opening and closing of the conductive mechanism, and control mechanisms are arranged in the remaining two cavities and are used for controlling the opening and closing mechanism; according to the mechanical and electrical interlocking device, the opening and closing mechanism is arranged, when the handle is rotated, the rotating shaft rotates to extrude the terminal B through the extrusion block, strong contact force exists between the terminal A and the terminal B, when power is cut off, the electromagnet drives the clamping block to contract and leave the placement groove, and the terminal A and the terminal B are separated under the counter-acting force of the spring A; therefore, the effect of disconnection after power failure can be achieved while strong contact force is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical electrical interlocking, in particular to a mechanical electrical interlocking device. Background Art

[0002] Interlocking devices are widely used in switchgear and complete sets of equipment. Their main purpose is to protect personal safety, prevent wrong operation and ensure the order of electricity use. Depending on the type of electrical appliances, the selected interlocking devices are also different. Generally, there are mechanical interlocking, electrical interlocking, electromagnetic lock, microcomputer interlocking, mechanical program lock, etc. Mechanical interlocking is interlocking during mechanical transmission. When the mechanical transmission reaches a specified position, it causes the mechanical action connected to it to be restricted or blocked. It is this mechanical action that causes the change of the mechanical connected to it. Electrical interlocking is to add auxiliary contacts to its electrical control circuit to restrict its operation. Only when the conditions are met can its circuit be turned on or operated.

[0003] In order to ensure the reliability of the connection, the current electrical interlocking devices generally have a large contact force between the poles, which makes it difficult to disconnect after a power outage, and dangerous situations may occur after the power is restored. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a mechanical electrical interlocking device which has the advantages of being difficult to disconnect due to large contact force and being able to disconnect only after power failure, thus solving the problem that the current interlocking device is difficult to disconnect due to the need to ensure the connection force.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanical electrical interlocking device, comprising a shell; two partition plates are fixed in the shell, and the partition plates divide the shell into three cavities, one of which is fixedly installed with a conductive mechanism for connecting two wires, and an opening and closing mechanism is installed in the shell, one end of the opening and closing mechanism is outside the shell, and the other end passes through the two cavities and corresponds to the conductive mechanism, which is used to control the opening and closing of the conductive mechanism, and the remaining two cavities are provided with a control mechanism for controlling the opening and closing mechanism.

[0006] In some embodiments, the opening and closing mechanism includes a rotating shaft, an extrusion block, a control wheel and a ratchet. The rotating shaft is located in three cavities and one end is outside the outer shell. The control wheel is fixed to one end of the rotating shaft inside the outer shell. The extrusion block corresponds to the conductive mechanism. The control wheel and the ratchet are both fixed on the rotating shaft and are respectively located in the other two cavities. A placement groove is provided on the control wheel.

[0007] In some embodiments, the conductive mechanism includes a support plate, a terminal A and a terminal B. The support plate is fixed to the inner wall of the housing. The contacts of the terminal A and the terminal B are arranged opposite to each other and both pass through the support plate. One end of the terminal A on one side of the support plate and one end of the terminal B on the same side of the support plate are both covered with a spring A. The other end of the spring A is fixed to the support plate. A fixing ball is fixedly installed on the end of the terminal B away from the support plate. The fixing ball is in contact with the extrusion block. When the extrusion block rotates, it can drive the fixing ball and the terminal B to move toward the terminal A.

[0008] In some embodiments, the control mechanism includes a card block, a spring B and an electromagnet. There are multiple springs B, preferably two. One end of the spring B is fixed to the side wall of the shell, the other end of the spring B is fixed to the card block, the fixed end of the electromagnet is fixed to the shell, and the output end of the electromagnet is fixed to the card block. When the electromagnet is energized, the card block pulls the spring B into the placement slot when the control wheel rotates. When the electromagnet is powered off, it contracts due to the pulling force of the spring B.

[0009] In some embodiments, a lever is hinged at a position corresponding to the ratchet in the housing, and a push rod is fixedly installed at the output end of the electromagnet. The push rod contacts the lever, and the end of the lever cooperates with the ratchet. When the electromagnet contracts, the push rod pushes the lever away from the ratchet.

[0010] In some embodiments, a handle is fixedly mounted on one end of the rotating shaft outside the housing.

[0011] In some embodiments, a support ring is fixedly installed in the housing at a position corresponding to the control wheel, and one side of the control wheel is located in the support ring and is rotationally connected thereto.

[0012] Compared with the prior art, the utility model provides a mechanical electrical interlocking device, which has the following beneficial effects:

[0013] 1. The mechanical electrical interlocking device is provided with an opening and closing mechanism. When the handle is rotated, the rotating shaft rotates through the extrusion block to extrude terminal B. Since spring A is installed on terminal A, terminal A and terminal B have a strong contact force. After rotation, the control wheel is restricted by the block. When the power is off, the electromagnet drives the block to shrink and leave the placement slot. Under the reaction force of spring A, terminal A and terminal B are separated, thereby ensuring a strong contact force while achieving the effect of disconnection after power is off.

[0014] 2. The mechanical electrical interlocking device is provided with a ratchet. When the interlocking device is connected, the ratchet rotates a certain angle and is then fixed by the lever. When the interlocking device is vibrated, the rotating shaft is not likely to reverse, thus ensuring reliability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 It is a partial structural schematic diagram of the utility model;

[0018] Figure 4 It is a structural diagram of the opening and closing mechanism and the control mechanism of the utility model;

[0019] Figure 5 For this utility model Figure 3 A magnified view of the structure at center.

[0020] In the figure: 1. shell; 2. partition plate; 3. conductive mechanism; 301. support plate; 302. terminal A; 303. terminal B; 304. spring A; 305. fixed ball; 4. opening and closing mechanism; 401. rotating shaft; 402. extrusion block; 403. control wheel; 404. ratchet; 405. placement groove; 406. handle; 407. support ring; 5. control mechanism; 501. block; 502. spring B; 503. electromagnet; 6. lever; 7. push rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0023] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0025] In the related art, in order to ensure the reliability of the connection, the contact force between the poles of the electrical interlocking device is generally large, and it is difficult to disconnect after a power outage, so that a dangerous situation may occur after the power is restored.

[0026] In order to solve the problems in the related art to a certain extent, the embodiment of the present application provides a mechanical electrical interlocking device. When it is needed, it is only necessary to rotate the handle 406 to rotate the rotating shaft 401, so that the terminal B303 can be squeezed by the squeezing block 402, so that the terminal B303 contacts the terminal A302. Since the spring A304 is installed on the terminal A302, it can retreat a certain distance after being squeezed, so that the terminal A302 and the terminal B303 have a strong contact force. After rotating a certain angle, the control wheel 403 is restricted by the block 501, and the ratchet 404 rotates a certain angle at the same time as the rotating shaft 401, and then is fixed by the lever 6. When the interlocking device is vibrated, the rotating shaft 401 is not easy to reverse. When the power is off, the electromagnet 503 drives the block 501 to shrink and leave the placement slot 405, and the lever 6 loses the restriction on the ratchet 404. At this time, under the reaction force of the spring A304, the rotating shaft 401 will gradually reverse, so that the terminal A302 is separated from the terminal B303.

[0027] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0028] Combination Figure 1-Figure 5 The embodiment of the present application provides a mechanical electrical interlocking device, including a housing 1. Two partition plates 2 are fixed in the housing 1, and the partition plates 2 divide the housing 1 into three cavities, in which a conductive mechanism 3 is fixedly installed in one of the cavities for connecting two wires, an opening and closing mechanism 4 is installed in the housing 1, one end of the opening and closing mechanism 4 is outside the housing 1, and the other end passes through the two cavities and corresponds to the conductive mechanism 3, and is used to control the opening and closing of the conductive mechanism 3, and the remaining two cavities are provided with a control mechanism 5 for controlling the opening and closing mechanism 4.

[0029] In this embodiment, three cavities are provided to separate different working parts, which is safer and less susceptible to the influence of electric current.

[0030] In some embodiments, the opening and closing mechanism 4 includes a rotating shaft 401, an extrusion block 402, a control wheel 403 and a ratchet 404. The rotating shaft 401 is located in three cavities, and one end is outside the outer shell 1. The control wheel 403 is fixed to the end of the rotating shaft 401 inside the outer shell 1. The extrusion block 402 corresponds to the conductive mechanism 3. The control wheel 403 and the ratchet 404 are both fixed on the rotating shaft 401 and are respectively located in the other two cavities. A placement slot 405 is provided on the control wheel 403.

[0031] Specifically, the slope of the squeezing block 402 gradually becomes higher, and can squeeze the laterally moving parts when rotating.

[0032] In some embodiments, the conductive mechanism 3 includes a support plate 301, a terminal A302 and a terminal B303. The support plate 301 is fixed to the inner wall of the housing 1. The contacts of the terminal A302 and the terminal B303 are arranged opposite to each other and both pass through the support plate 301. One end of the terminal A302 on one side of the support plate 301 and one end of the terminal B303 on the same side of the support plate 301 are both covered with a spring A304. The other end of the spring A304 is fixed to the support plate 301. A fixing ball 305 is fixedly installed on one end of the terminal B303 away from the support plate 301. The fixing ball 305 is in contact with the extrusion block 402. When the extrusion block 402 rotates, it can drive the fixing ball 305 and the terminal B303 to move toward the terminal A302.

[0033] Specifically, terminal A302 and terminal B303 are responsible for connecting two wires respectively, and the contact position between the two has strong conductivity.

[0034] In some embodiments, the control mechanism 5 includes a block 501, a spring B502 and an electromagnet 503. There are multiple springs B502, preferably two. One end of the spring B502 is fixed to the side wall of the housing 1, the other end of the spring B502 is fixed to the block 501, the fixed end of the electromagnet 503 is fixed to the housing 1, and the output end of the electromagnet 503 is fixed to the block 501. When the electromagnet 503 is energized, the block 501 pulls the spring B502 into the placement slot 405 when the control wheel 403 rotates. When the electromagnet 503 is powered off, it shrinks due to the pulling force of the spring B502.

[0035] Specifically, the electromagnet 503 includes a coil and a movable core shaft. The core shaft can be extended when power is turned on, and the core shaft can be retracted when power is turned off.

[0036] In some embodiments, a lever 6 is hinged at a position corresponding to the ratchet 404 in the housing 1, and a push rod 7 is fixedly installed at the output end of the electromagnet 503. The push rod 7 contacts the lever 6, and the end of the lever 6 cooperates with the ratchet 404. When the electromagnet 503 contracts, the push rod 7 pushes the lever 6 away from the ratchet 404.

[0037] Specifically, after the ratchet 404 stops rotating, it is fixed by the lever 6. The contact position between the lever 6 and the top rod 7 is an inclined structure. When the top rod 7 moves laterally, the lever 6 can be lifted. When there is a large friction between the lever 6 and the ratchet 404, the two can be easily separated.

[0038] In some embodiments, a handle 406 is fixedly mounted on one end of the rotating shaft 401 outside the housing 1 .

[0039] Specifically, the handle 406 facilitates operation and enables safe operation.

[0040] In some embodiments, a support ring 407 is fixedly installed in the housing 1 at a position corresponding to the control wheel 403 , and one side of the control wheel 403 is located in the support ring 407 and is rotatably connected thereto.

[0041] Specifically, the support ring 407 mainly stabilizes the rotating shaft 401 .

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0043] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mechanical electrical interlocking device, comprising a housing (1), characterized in that: Two partition plates (2) are fixed in the shell (1), and the partition plates (2) divide the shell (1) into three cavities, one of which is fixedly installed with a conductive mechanism (3). An opening and closing mechanism (4) is installed in the shell (1), one end of the opening and closing mechanism (4) is outside the shell (1), and the other end passes through the two cavities and corresponds to the conductive mechanism (3). The remaining two cavities are provided with control mechanisms (5).

2. The mechanical and electrical interlocking device according to claim 1, characterized in that: The opening and closing mechanism (4) comprises a rotating shaft (401), an extrusion block (402), a control wheel (403) and a ratchet (404); the rotating shaft (401) is located in three cavities and one end is located outside the housing (1); the control wheel (403) is fixed to the end of the rotating shaft (401) located inside the housing (1); the extrusion block (402) corresponds to the conductive mechanism (3); the control wheel (403) and the ratchet (404) are both fixed to the rotating shaft (401) and are located in the other two cavities respectively; and a placement slot (405) is provided on the control wheel (403).

3. The mechanical and electrical interlocking device according to claim 2, characterized in that: The conductive mechanism (3) comprises a support plate (301), a terminal A (302) and a terminal B (303); the support plate (301) is fixed to the inner wall of the housing (1); the contact points of the terminal A (302) and the terminal B (303) are arranged opposite to each other and both penetrate the support plate (301); one end of the terminal A (302) on one side of the support plate (301) and one end of the terminal B (303) on the same side of the support plate (301) are both sleeved with a spring A (304); the other end of the spring A (304) is fixed to the support plate (301); one end of the terminal B (303) away from the support plate (301) is fixedly mounted with a fixing ball (305); the fixing ball (305) is in contact with an extrusion block (402); when the extrusion block (402) rotates, it can drive the fixing ball (305) and the terminal B (303) to move toward the terminal A (302).

4. The mechanical and electrical interlocking device according to claim 3, characterized in that: The control mechanism (5) comprises a clamping block (501), a spring B (502) and an electromagnet (503), wherein a plurality of springs B (502) are provided, one end of the spring B (502) is fixed to the side wall of the housing (1), the other end of the spring B (502) is fixed to the clamping block (501), the fixed end of the electromagnet (503) is fixed to the housing (1), and the output end of the electromagnet (503) is fixed to the clamping block (501).

5. The mechanical and electrical interlocking device according to claim 4, characterized in that: A lever (6) is hingedly connected to a position corresponding to the ratchet (404) in the housing (1), and a push rod (7) is fixedly mounted on the output end of the electromagnet (503). The push rod (7) is in contact with the lever (6), and the end of the lever (6) cooperates with the ratchet (404).

6. The mechanical and electrical interlocking device according to claim 2, characterized in that: A handle (406) is fixedly mounted on one end of the rotating shaft (401) outside the housing (1).

7. The mechanical and electrical interlocking device according to claim 2, characterized in that: A support ring (407) is fixedly installed in the housing (1) at a position corresponding to the control wheel (403); one side of the control wheel (403) is located in the support ring (407) and is rotatably connected thereto.

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