Contact driving mechanism and isolating switch

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a contact driving mechanism and an isolating switch, the contact driving mechanism comprises a driving piece, a contact support and a transmission piece, the driving piece is rotatably arranged on a shell of the isolating switch, and the driving piece is provided with a first matching part; the contact support is movably arranged on the shell and is used for mounting the moving contact; the contact support is provided with a first inclined surface; the transmission part is movably arranged on the shell, and an included angle is formed between the moving direction of the transmission part and the moving direction of the contact support; the transmission piece is provided with a second matching part and a second inclined surface; the second matching part can be jointed with the first matching part, and the second inclined surface is in sliding fit with the first inclined surface; the transmission part can be driven by the driving part to move, so that the second inclined surface is in sliding fit with the first inclined surface to push the contact support to move, the first inclined surface and the second inclined surface are in surface contact and sliding fit, the stability when the driving part drives the contact support to move can be improved, and the reliability of the disconnecting switch opening and closing circuit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a contact driving mechanism and a disconnector. Background Art

[0002] A disconnector is a device used to disconnect the current conduction path and ensure that the circuit is powered off. After the disconnector disconnects the circuit, maintenance and repair work can be carried out on the circuit.

[0003] The disconnector includes a driving mechanism and a contact system. The moving contact of the contact system makes contact with and separates from the static contact under the drive of the driving mechanism. The driving mechanism includes a rotatable driving member and a movable contact support. The driving member is installed on the knob and rotates synchronously with the knob. During the rotation process, the driving member pushes the contact support to move, so that the moving contact installed on the contact support moves to contact with or separate from the static contact.

[0004] In the driving mechanism of the existing disconnector, the driving member and the contact support are usually in point-surface contact or line-surface contact. The stability of the driving member when driving the contact support to move is poor, resulting in the inability to ensure the reliability of circuit opening and closing after the disconnector is used for a long time.

[0005] Therefore, there is an urgent need for a contact driving mechanism and a disconnector to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a contact driving mechanism and a disconnector, which can improve the stability of the driving member when driving the contact support to move and improve the reliability of circuit opening and closing of the disconnector.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] In the first aspect, a contact driving mechanism is provided, including:

[0009] A driving member, configured to be rotatably arranged in the housing of the disconnector, and the driving member is provided with a first mating portion;

[0010] A contact support, configured to be movably arranged in the housing and used for installing a moving contact; the contact support is provided with a first inclined surface;

[0011] A transmission member, configured to be movably arranged in the housing, and there is an included angle between the moving direction of the transmission member and the moving direction of the contact support; the transmission member is provided with a second mating portion and a second inclined surface; the second mating portion can be engaged with the first mating portion, and the second inclined surface is slidably matched with the first inclined surface;

[0012] The transmission member can move under the drive of the driving member, so that the second inclined surface realizes pushing the contact support to move through the sliding fit with the first inclined surface.

[0013] As an alternative solution of the contact driving mechanism provided by the present utility model, the driving member is provided with a first limiting portion, the first limiting portion is spaced from the rotation center of the driving member, the transmission member is provided with a second limiting portion, and the first limiting portion and the second limiting portion are detachably abutted;

[0014] When the driving member rotates, the first limiting portion pushes the second limiting portion, so that the second inclined surface is separated from the first inclined surface.

[0015] As an alternative solution of the contact driving mechanism provided by the present utility model, the contact driving mechanism further includes an elastic member, the elastic member is connected between the transmission member and the housing, and the transmission member can move under the elastic force of the elastic member to make the second inclined surface abut against the first inclined surface.

[0016] As an alternative solution of the contact driving mechanism provided by the present utility model, an installation groove is recessed on one side of the transmission member facing away from the second inclined surface, and the elastic member is telescopically arranged in the installation groove.

[0017] As an alternative solution of the contact driving mechanism provided by the present utility model, the first engaging portion includes a plurality of first convex teeth arranged at intervals, and the plurality of first convex teeth are distributed in a fan shape around the rotation center of the driving member;

[0018] The second engaging portion includes a plurality of second convex teeth, and the plurality of second convex teeth are distributed at intervals along the moving direction of the transmission member;

[0019] The first convex teeth and the second convex teeth are detachably engaged.

[0020] As an alternative solution of the contact driving mechanism provided by the present utility model, the transmission member includes:

[0021] A first transmission portion, provided with the second inclined surface;

[0022] A second transmission portion, protruding from the first transmission portion, a relief groove is formed between the end surface of the second transmission portion facing the driving member and the first transmission portion, the second convex teeth protrude from the end surface of the second transmission portion facing the driving member, and at least part of the first convex teeth can rotate into the relief groove.

[0023] As an alternative solution of the contact driving mechanism provided by the present utility model, the driving member rotates between a first position and a second position, and after the driving member rotates a preset angle from the first position, the first convex teeth and the second convex teeth are engaged.

[0024] As an alternative solution of the contact driving mechanism provided by the present utility model, a first plane connected to one end of the first inclined plane is provided on the contact support, and a second plane connected to one end of the second inclined plane is provided on the transmission member. Both the first plane and the second plane are perpendicular to the moving direction of the contact support;

[0025] The contact support has a closed position where the moving contact contacts the static contact and an open position where the moving contact separates from the static contact;

[0026] The contact support at the open position abuts against the second plane through the first plane.

[0027] As an alternative solution of the contact driving mechanism provided by the present utility model, at least two of the first engaging portions are provided on the driving member at intervals; at least two transmission members are provided, and at least two of the transmission members are respectively arranged on opposite sides of the driving member, and one first inclined plane is provided on the contact support corresponding to each transmission member;

[0028] And / or, the dimension of the first inclined plane in the sliding direction is greater than the dimension of the second inclined plane in the sliding direction, and the sliding direction is the direction in which the first inclined plane and the second inclined plane are in sliding fit;

[0029] And / or, the rotation axis of the driving member is parallel to the moving direction of the contact support, and the moving direction of the transmission member is perpendicular to the moving direction of the contact support.

[0030] In a second aspect, a disconnector is provided, including a housing, a knob, a static contact, a moving contact, and the contact driving mechanism as described above. The knob is rotatably arranged outside the housing and is connected to the driving member. The static contact is installed inside the housing, the moving contact is installed on the contact support, and the moving contact is used to contact the static contact separably under the drive of the contact support.

[0031] Advantages of the present utility model:

[0032] The present utility model provides a contact driving mechanism and a disconnecting switch including the contact driving mechanism. When the driving member is driven to rotate relative to the housing of the disconnecting switch, the driving member can drive the transmission member to move through the mutually engaged first mating portion and second mating portion. When the transmission member moves, the second inclined surface thereon can slidably cooperate with the first inclined surface on the contact support, so that the transmission member realizes pushing the contact support to move through the sliding cooperation between the second inclined surface and the first inclined surface. Furthermore, the contact support drives the moving contact to move relative to the housing, realizing the state switching of the disconnecting switch. When the driving member pushes the contact support through the transmission member, the first inclined surface and the second inclined surface are in surface contact and slidably cooperate, which can improve the stability when the driving member drives the contact support to move and improve the reliability of the disconnecting switch for switching the circuit on and off. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments of the present utility model. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the drawings.

[0034] Figure 1 is a cross-sectional view of the disconnecting switch provided by the specific embodiment of the present utility model;

[0035] Figure 2 is an exploded view of the disconnecting switch provided by the specific embodiment of the present utility model;

[0036] Figure 3 is a structural schematic diagram of the driving member of the contact driving mechanism provided by the specific embodiment of the present utility model;

[0037] Figure 4 is a structural schematic diagram of the contact support of the contact driving mechanism provided by the specific embodiment of the present utility model;

[0038] Figure 5 is a structural schematic diagram of the transmission member of the contact driving mechanism provided by the specific embodiment of the present utility model;

[0039] Figure 6 is a first view of the contact driving mechanism provided by the specific embodiment of the present utility model when the disconnecting switch is in the closed state;

[0040] Figure 7 is a second view of the contact driving mechanism provided by the specific embodiment of the present utility model when the disconnecting switch is in the closed state;

[0041] Figure 8 is a first view of the contact driving mechanism provided by the specific embodiment of the present utility model when the disconnecting switch is switched from the closed state to the open state;

[0042] Figure 9 It is the second view of the contact driving mechanism provided by the specific embodiment of the present utility model when the disconnector changes from the closed state to the open state;

[0043] Figure 10 It is the first view of the contact driving mechanism provided by the specific embodiment of the present utility model when the disconnector is in the open state;

[0044] Figure 11 It is the second view of the contact driving mechanism provided by the specific embodiment of the present utility model when the disconnector is in the open state;

[0045] Figure 12 It is a schematic diagram of the contact driving mechanism provided by the specific embodiment of the present utility model when the disconnector changes from the open state to the closed state.

[0046] In the figure:

[0047] 100, housing; 200, knob; 300, static contact; 400, moving contact; 500, reaction spring;

[0048] 101, base; 102, middle cover; 103, upper cover;

[0049] 1021, guiding groove;

[0050] 1, driving part; 2, contact support; 3, transmission part; 4, elastic part;

[0051] 11, first mating part; 12, first limiting part; 13, connecting part; 14, disc part;

[0052] 111, first convex tooth;

[0053] 21, first inclined surface; 22, first flat surface; 23, installation cavity;

[0054] 31, first transmission part; 32, second transmission part; 33, avoidance groove;

[0055] 311, second inclined surface; 312, installation groove; 313, second flat surface;

[0056] 321, second mating part; 322, second limiting part;

[0057] 3211, second convex tooth;

[0058] a, sliding direction. Specific embodiment

[0059] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of convenience of description, only the parts related to the present utility model are shown in the drawings, rather than all the structures.

[0060] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0061] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0062] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0063] The term "and / or" in this embodiment is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present utility model generally represents an "or" relationship between the associated objects before and after.

[0064] In the embodiments of the present utility model, the same reference numerals represent the same components. And for the sake of simplicity, in different embodiments, the detailed description of the same components is omitted.

[0065] Such as Figure 1 AndFigure 2 As shown, it is a cross-sectional view and an exploded schematic diagram of the disconnect switch provided by the embodiment of the present application. The disconnect switch includes a housing 100, a knob 200, a stationary contact 300, a moving contact 400, and a contact driving mechanism. The knob 200 is rotatably provided outside the housing 100 and is used to receive a screwing operation to realize the switching of the state of the disconnect switch, specifically, the switching between the closed state and the open state. The stationary contact 300 and the moving contact 400 are both installed inside the housing 100, and they are separably in contact. When the stationary contact 300 is in contact with the moving contact 400, the disconnect switch is in the closed state, and when the stationary contact 300 is separated from the moving contact 400, the disconnect switch is in the open state. The contact driving mechanism is used to drive the moving contact 400 to move.

[0066] See Figure 1 and Figure 2 , the contact driving mechanism provided by this embodiment includes a driving member 1, a contact support 2, and a transmission member 3. The driving member 1 can drive the contact support 2 to move through the transmission member 3, and can improve the stability when driving the contact support 2 to move, and improve the reliability of the disconnect switch for switching the circuit on and off.

[0067] Specifically, the driving member 1 is configured to be rotatably provided in the housing 100 of the disconnect switch, and the driving member 1 is in transmission connection with the above-mentioned knob 200. When the knob 200 receives a screwing operation, it can drive the driving member 1 to rotate synchronously relative to the housing 100. Combining Figure 3 , a first mating portion 11 is provided on the driving member 1.

[0068] The contact support 2 is configured to be movably provided in the housing 100 and is used to install the moving contact 400, so that the moving contact 400 can be separably in contact with the stationary contact 300 under the drive of the contact support 2. Combining Figure 1 , Figure 2 and Figure 4 , a first inclined surface 21 is provided on the contact support 2.

[0069] Combining Figure 1 , Figure 2 and Figure 5 , the transmission member 3 is configured to be movably provided in the housing 100, and there is an included angle between the moving direction of the transmission member 3 and the moving direction of the contact support 2. The transmission member 3 is provided with a second mating portion 321 and a second inclined surface 311. The second mating portion 321 can be engaged with the first mating portion 11, so that the transmission member 3 can move under the drive of the driving member 1. The second inclined surface 311 is in slidable fit with the first inclined surface 21. When the transmission member 3 moves, the second inclined surface 311 realizes the pushing of the contact support 2 to move through the slidable fit with the first inclined surface 21.

[0070] In the contact driving mechanism provided in this embodiment, when the driving member 1 is driven to rotate relative to the housing 100 of the disconnecting switch, the driving member 1 can drive the transmission member 3 to move through the mutually engaged first engaging portion 11 and second engaging portion 321. When the transmission member 3 moves, the second inclined surface 311 thereon can slidably cooperate with the first inclined surface 21 on the contact support 2. Thus, the transmission member 3 realizes pushing the contact support 2 to move through the sliding cooperation between the second inclined surface 311 and the first inclined surface 21, and further enables the contact support 2 to drive the moving contact 400 to move relative to the housing 100, realizing the state switching of the disconnecting switch. When the driving member 1 pushes the contact support 2 through the transmission member 3, the first inclined surface 21 and the second inclined surface 311 are in surface contact and slidably cooperate, which can improve the stability when the driving member 1 drives the contact support 2 to move and improve the reliability of the disconnecting switch for opening and closing the circuit.

[0071] Specifically in this embodiment, referring to Figure 1 , the rotation axis of the driving member 1 is parallel to the moving direction of the contact support 2, and the moving direction of the transmission member 3 is perpendicular to the moving direction of the contact support 2, and the structural arrangement is more reasonable and easier to implement. That is, the included angle between the moving direction of the transmission member 3 and the moving direction of the contact support 2 is 90 degrees. Define the moving direction of the contact support 2 as the Z direction, the moving direction of the transmission member 3 as the X direction, and the rotation axis of the driving member 1 is also the Z direction. Further, in combination with Figure 2 , a plurality of static contacts 300 and a plurality of moving contacts 400 are spaced apart in the housing 100. The plurality of static contacts 300 are fixedly arranged in the housing 100 at intervals along the Y direction, and the plurality of moving contacts 400 are arranged at intervals along the Y direction on the contact support 2. Among them, the X direction, the Y direction, and the Z direction are perpendicular to each other in pairs.

[0072] Both the first inclined surface 21 and the second inclined surface 311 are arranged at an acute angle with respect to the X direction and at an acute angle with respect to the Z direction. When the transmission member 3 moves, it can push the contact support 2 to move along the Z direction through the sliding cooperation between the first inclined surface 21 and the second inclined surface 311.

[0073] The driving member 1 has a first position and a second position relative to the housing 100, and it rotates between the first position and the second position. The contact support 2 has a closed position where the moving contact 400 is in contact with the static contact 300 and an open position where the moving contact 400 is separated from the static contact 300 relative to the housing 100. As Figure 6 and Figure 7 shown, when the driving member 1 is in the first position and the contact support 2 is in the closed position where the moving contact 400 is in contact with the static contact 300, the disconnecting switch is in the closed state. As Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, by turning the knob 200, the driving member 1 rotates about the Z direction. The driving member 1 drives the transmission member 3 to move along the X direction through the engaged first engaging portion 11 and second engaging portion 321. When the transmission member 3 moves, it pushes against the first inclined surface 21 through the second inclined surface 311, thereby pushing the contact support 2 to move along the Z direction. The contact support 2 drives the moving contact 400 to move to the open position, realizing the separation of the moving contact 400 from the static contact 300 and switching the disconnecting switch to the open state.

[0074] As Figure 10 and Figure 11 shown, the driving member 1 is in the second position, the contact support 2 is in the open position, and the disconnecting switch is in the open state.

[0075] Furthermore, referring to Figure 1 and Figure 2 , the disconnecting switch further includes a reaction spring 500. One end of the reaction spring 500 abuts against the inner wall of the housing 100, and the other end abuts against the moving contact 400. When the contact support 2 drives the contact 400 to move from the closed position to the open position, the moving contact 400 compresses the reaction spring 500 so that the reaction spring 500 stores potential energy. When the knob 200 is rotated counterclockwise, the driving member 1 rotates from the second position to the first position, and the reaction spring 500 can release elastic potential energy to drive the contact support 2 to quickly return to the closed position, accelerating the closing speed of the moving contact 400 and the static contact 300. Moreover, under the action of the reaction spring 500, the moving contact 400 acts on the static contact 300 with a certain pressure to ensure good electrical contact between the moving contact 400 and the static contact 300 and reduce the contact resistance.

[0076] Referring to Figure 2 and Figure 4 , an installation cavity 23 is provided on the contact support 2, and the moving contact 400 is disposed through the installation cavity 23. The reaction spring 500 partially extends into the installation cavity 23 to abut against the moving contact 400. Exemplarily, three moving contacts 400 are installed on the contact support 2, and three corresponding installation cavities 23 are provided thereon, and one moving contact 400 is disposed in each installation cavity 23.

[0077] Referring to Figure 3 , Figure 5 and Figure 6, the driving member 1 is provided with a first limiting portion 12, and the first limiting portion 12 is spaced from the rotation center of the driving member 1 so that the first limiting portion 12 can perform a circumferential motion around the center of the driving member 1. A second limiting portion 322 is provided on the transmission member 3, and the first limiting portion 12 and the second limiting portion 322 are detachably abutted. When the driving member 1 rotates from the second position to the first position, it can push the second limiting portion 322 through the first limiting portion 12 so that the second inclined surface 311 is separated from the first inclined surface 21. Moreover, when the driving member 1 rotates to the first position, due to the abutting and limiting effect of the first limiting portion 12 on the second limiting portion 322, the transmission member 3 can be maintained at a position where there is a gap between the second inclined surface 311 and the first inclined surface 21 thereon. When the driving member 1 rotates from the first position to the second position, the second inclined surface 311 on the transmission member 3 will not come into contact with the first inclined surface 21 instantaneously, that is, it will not push the contact support 2 to move. That is to say, the transmission member 3 needs to move a certain stroke before it will push the contact support 2 to move, preventing the situation that when the knob 200 is accidentally touched, the contact support 2 drives the moving contact 400 to move accidentally, resulting in the accidental disconnection of the disconnector.

[0078] Optionally, refer to Figure 2 , Figure 8 and Figure 9 , the contact driving mechanism further includes an elastic member 4, and the elastic member 4 is connected between the transmission member 3 and the housing 100. When the driving member 1 rotates from the second position to the first position, during the process of pushing the second limiting portion 322 through the first limiting portion 12, the transmission member 3 can compress the elastic member 4 so that the elastic member 4 accumulates elastic potential energy. That is, when the disconnector is in the closed state, the elastic member 4 is compressed between the housing 100 and the transmission member 3. When it is necessary to switch the disconnector to the open state, the driving member 1 rotates from the first position to the second position, and the first limiting portion 12 rotates in a direction away from the second limiting portion 322 to release the limit on the transmission member 3. At this time, the elastic member 4 releases its elastic force, and the transmission member 3 can move along the X direction under the elastic force of the elastic member 4 until the second inclined surface 311 abuts against the first inclined surface 21. The setting of the elastic member 4 can enable the transmission member 3 to automatically move to the position where it abuts against the contact support 2, facilitating the subsequent pushing of the contact support 2 by the transmission member 3 under the drive of the driving member 1.

[0079] Further, after the transmission member 3 moves under the elastic force of the elastic member 4 until the second inclined surface 311 abuts against the first inclined surface 21, the elastic force of the elastic member 4 is not sufficient to cause the second inclined surface 311 to slide along the first inclined surface 21, that is, it is not sufficient to cause the elastic member 4 to push the contact support 2. The transmission member 3 needs to continue to move along the X direction under the drive of the driving member 1 subsequently.

[0080] Refer to Figure 5, on the side of the transmission member 3 facing away from the second inclined surface 311, an installation groove 312 is recessed, and the elastic member 4 is telescopically arranged in the installation groove 312. On the one hand, the arrangement of the installation groove 312 improves the installation stability of the elastic member 4 and helps to save installation space; on the other hand, the installation groove 312 extends in the X direction, and the elastic member 4 expands and contracts in the installation groove 312 in the X direction. The installation groove 312 can provide guidance for its expansion and contraction, improving the expansion and contraction stability of the elastic member 4.

[0081] Exemplarily, the elastic member 4 is a spring, which is easy to obtain materials and has a low cost.

[0082] In this embodiment, referring to Figure 3 , Figure 5 and Figure 6 , the first engaging portion 11 includes a plurality of first convex teeth 111 arranged at intervals, and the plurality of first convex teeth 111 are distributed in a fan shape around the rotation center of the driving member 1; the second engaging portion 321 includes a plurality of second convex teeth 3211, and the plurality of second convex teeth 3211 are distributed at intervals along the moving direction of the transmission member 3, that is, the plurality of second convex teeth 3211 are distributed at intervals in the X direction. The first convex teeth 111 and the second convex teeth 3211 are separably engaged. When the first convex teeth 111 and the second convex teeth 3211 are engaged, the first engaging portion 11 and the second engaging portion 321 are joined, and when the driving member 1 rotates, it can drive the transmission member 3 to move.

[0083] The engagement of the plurality of first convex teeth 111 and the plurality of second convex teeth 3211 can improve the transmission accuracy and stability between the driving member 1 and the transmission member 3, and further make the disconnecting switch more stable and reliable when switching between the closed state and the open state.

[0084] Referring to Figure 3 , the driving member 1 includes a connected connecting portion 13 and a disc portion 14, and the connecting portion 13 and the disc portion 14 are coaxially arranged. The connecting portion 13 is used to connect with the knob 200 to realize the synchronous rotation of the knob 200 driving the driving member 1. Specifically, a square plug is provided on the knob 200, and a square socket is provided on the connecting portion 13. The square plug is inserted and connected in the square socket to realize the circumferential limitation of the driving member 1 on the knob 200, and further enable the two to rotate synchronously. The first convex teeth 111 protrude from the outer wall of the disc portion 14, and the disc portion 14 is approximately a gear structure. Further, the first limiting portion 12 also protrudes from the outer wall of the disc portion 14, and the first limiting portion 12 and the first engaging portion 11 are arranged at intervals, and both can perform circular motion around the rotation center of the disc portion 14 when the disc portion 14 rotates.

[0085] In this embodiment, referring to Figure 5 and Figure 6The transmission member 3 includes a first transmission part 31 and a second transmission part 32. The first transmission part 31 is provided with the above-mentioned second inclined surface 311 and mounting groove 312, and the second inclined surface 311 and mounting groove 312 are respectively arranged on both sides of the first transmission part 31 along the X direction. The second transmission part 32 is protruded from the first transmission part 31, and an avoidance groove 33 is formed between the end surface of the second transmission part 32 facing the driving member 1 and the first transmission part 31, and the second convex tooth 3211 is arranged on the end surface of the second transmission part 32 facing the driving member 1, and is protruded toward the driving member 1. When the driving member 1 drives the first convex tooth 111 to rotate to mesh with the second convex tooth 3211, the first convex tooth 111 can at least partially rotate into the avoidance groove 33. On the one hand, the formation of the avoidance groove 33 can make the driving member 1 and the transmission member 3 more compact and reasonable, saving the space occupied by the two; on the other hand, since the size of the first transmission part 31 is relatively large, the area of ​​the second inclined surface 311 can be large enough to ensure full contact with the first inclined surface 21, and the first transmission part 31 has enough space to open the installation groove 312.

[0086] In this embodiment, the driving member 1 rotates from the first position to a preset angle before the first protruding tooth 111 meshes with the second protruding tooth 3211. Figure 6 When the driving member 1 is in the first position, the first protruding tooth 111 and the second protruding tooth 3211 are not engaged, and there is a certain distance between the two from the engaged state. Figure 8 After the first protruding tooth 111 rotates by a preset angle in the direction of the arrow shown in the figure, it will rotate to a position where it meshes with the second protruding tooth 3211, and then it will drive the transmission member 3 to move along the X direction. When the knob 200 of the isolating switch in the closed state is accidentally touched, the driving member 1 will not instantly push the contact support 2 to move through the transmission member 3, so that the isolating switch is stably kept in the closed state. Only when the knob 200 drives the driving member 1 to rotate by a preset angle can it start to push the contact support 2 to move, ensuring the safety of the isolating switch.

[0087] The preset angle is exemplarily between 15 degrees and 45 degrees, for example, the preset angle is 20 degrees, 25 degrees, 30 degrees, etc.

[0088] In addition, when the contact support 2 moves from the on position to the off position, the first stroke of the transmission member 3 is pushed by the elastic member 4, and under the action of the elastic member 4, it moves to the second inclined surface 311 and abuts against the first inclined surface 21. The second stroke thereafter is driven by the driving member 1. After the driving member 1 rotates by a preset angle, the first convex tooth 111 engages with the second convex tooth 3211, thereby driving the transmission member 3 to continue to move along the X direction, and the second inclined surface 311 slides with the first inclined surface 21 to push the contact support 2.

[0089] Alternatively, see Figure 4, a first plane 22 connected to one end of the first inclined surface 21 is provided on the contact support 2, see Figure 5 , a second plane 313 connected to one end of the second inclined surface 311 is provided on the transmission member 3. Both the first plane 22 and the second plane 313 are perpendicular to the moving direction of the contact support 2, that is, perpendicular to the Z direction. When the contact support 2 moves from the closed position to the open position, the second inclined surface 311 of the transmission member 3 slides along the first inclined surface 21 of the contact support 2. After sliding to the end of the first inclined surface 21, the second plane 313 immediately slides in cooperation with the first plane 22. When the contact support 2 reaches the open position, the first plane 22 remains in the position abutting against the second plane 313, so that the contact support 2 is stably in the open position and will not move easily.

[0090] Furthermore, the dimension of the second plane 313 in the X direction is greater than the dimension of the first plane 22 in the X direction, ensuring that there is sufficient contact area between the first plane 22 and the second plane 313, and improving the stability of the contact support 2 in the open position.

[0091] See Figure 9 , it is specified that the sliding direction of the first inclined surface 21 and the second inclined surface 311 in sliding cooperation is the sliding direction a, and the dimension of the first inclined surface 21 in the sliding direction a is greater than the dimension of the second inclined surface 311 in the sliding direction a, so that there is sufficient contact area between the second inclined surface 311 and the first inclined surface 21 when the second inclined surface 311 slides along the first inclined surface 21, and the stability during sliding is improved.

[0092] Optionally, at least two first engaging portions 11 are provided at intervals on the driving member 1; at least two transmission members 3 are provided, and at least two transmission members 3 are respectively arranged on opposite sides of the driving member 1, and a first inclined surface 21 is provided on the contact support 2 corresponding to each transmission member 3, which can improve the stability and reliability when the driving member 1 pushes the contact support 2 to move through the transmission member 3.

[0093] Exemplarily, see Figure 3 and Figure 6 , two first engaging portions 11 are provided at intervals on the driving member 1, each first engaging portion 11 includes a plurality of first convex teeth 111, two transmission members 3 are provided and are respectively arranged on both sides of the driving member 1 along the Y direction, and a second engaging portion 321 (a plurality of second convex teeth 3211) is provided on each transmission member 3 for meshing with the corresponding first convex teeth 111. Combining Figure 4, the contact support 2 is provided with two first inclined surfaces 21 and two first flat surfaces 22, which are used to cooperate with the second inclined surface 311 and the second flat surface 313 of the two transmission members 3 in a one-to-one correspondence. When the driving member 1 rotates, the two transmission members 3 are driven to move towards or away from each other through the two first engaging portions 11. The transmission member 3 is in sliding cooperation with the corresponding first inclined surface 21 on the contact support 2 through the second inclined surface 311, which can improve the transmission stability and contribute to the balanced force.

[0094] See Figure 2 , the housing 100 includes a base 101, a middle cover 102 and an upper cover 103. The middle cover 102 is arranged between the base 101 and the upper cover 103. Among them, the reaction spring 500, the contact support 2, the moving contact 400 and the static contact 300 are installed on the base 101. The transmission member 3 and the elastic member 4 are installed on the middle cover 102. Specifically, a guiding groove 1021 extending in the X direction is provided on the middle cover 102, and the transmission member 3 is slidably arranged in the guiding groove 1021 along the X direction, which can improve the moving accuracy of the transmission member 3. The driving member 1 and the knob 200 are both installed on the upper cover 103. The base 101, the middle cover 102 and the upper cover 103 can be fixed by a snap structure or screws.

[0095] The following refers to Figures 6 to 12 Briefly describe the working principle of the contact driving mechanism of this disconnecting switch:

[0096] As Figure 6 and Figure 7 shown, the disconnecting switch is in the closed state, the driving member 1 is in the first position, and the contact support 2 is in the on position where the moving contact 400 and the static contact 300 are in contact. The first limiting portion 12 of the driving member 1 abuts against the second limiting portion 322 of the transmission member 3 to keep the transmission member 3 in the current position. There is a gap between the second inclined surface 311 of the transmission member 3 and the first inclined surface 21 of the contact support 2. The elastic member 4 is compressed and limited between the inner wall of the housing 100 and the transmission member 3, and the first convex tooth 111 and the second convex tooth 3211 are not yet engaged.

[0097] When the disconnecting switch is switched from the closed state to the open state, the driving member 1 is driven to rotate along the Figure 8 arrow direction shown (counterclockwise rotation) through the knob 200, and the limit on the transmission member 3 is released. The transmission member 3 moves under the elastic force of the elastic member 4 until it moves to the position where the second inclined surface 311 abuts against the first inclined surface 21 of the contact support 2, as Figure 9 shown. After that, the driving member 1 continues to rotate, Figure 8 the dotted circle in

[0098] AsFigure 10 and Figure 11 As shown, the driving member 1 drives the transmission member 3 to move through the engagement of the first convex tooth 111 and the second convex tooth 3211. The elastic member 4 is stretched when the transmission member 3 moves, and the transmission member 3 pushes against the contact support 2 through the sliding fit between the second inclined surface 311 and the first inclined surface 21, causing the contact support 2 to move from the closed position to the open position. As Figure 11 shown, when the disconnecting switch is in the open state, the second plane 313 of the transmission member 3 abuts against the first plane 22 of the contact support 2, so that the contact support 2 is stably held in the open position.

[0099] As Figure 12 shown, when the disconnecting switch is switched from the open state to the closed state, the driving member 1 is driven to rotate in the direction of the arrow shown (clockwise rotation) by the knob 200. The driving member 1 drives the transmission member 3 to move in the reverse direction through the engagement of the first convex tooth 111 and the second convex tooth 3211, and finally pushes against the second limiting portion 322 through the first limiting portion 12, causing the transmission member 3 to reset to the position shown in Figure 12 At the same time, under the action of the reaction spring 500, the contact support 2 resets to the closed position shown in Figure 6 Figure 7

[0100] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the embodiments of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.​​

Claims

1. Contact driving mechanism, characterized in that Comprising: A driving member (1), configured to be rotatably disposed on a housing (100) of a disconnector, and the driving member (1) is provided with a first engaging portion (11); A contact support (2), configured to be movably disposed on the housing (100) and for mounting a moving contact (400); the contact support (2) is provided with a first inclined surface (21); A transmission member (3), configured to be movably disposed on the housing (100), and there is an included angle between the moving direction of the transmission member (3) and the moving direction of the contact support (2); the transmission member (3) is provided with a second engaging portion (321) and a second inclined surface (311); the second engaging portion (321) can be engaged with the first engaging portion (11), and the second inclined surface (311) is slidably engaged with the first inclined surface (21); The transmission member (3) can be driven by the driving member (1) to move, so that the second inclined surface (311) realizes pushing the contact support (2) to move through the sliding fit with the first inclined surface (21).

2. The contact driving mechanism according to claim 1, characterized in that, The driving member (1) is provided with a first limiting portion (12), the first limiting portion (12) is spaced from the rotation center of the driving member (1), the transmission member (3) is provided with a second limiting portion (322), and the first limiting portion (12) and the second limiting portion (322) are detachably abutted; When the driving member (1) rotates, the first limiting portion (12) pushes the second limiting portion (322), so that the second inclined surface (311) is separated from the first inclined surface (21).

3. The contact driving mechanism according to claim 2, wherein, The contact driving mechanism further includes an elastic member (4), the elastic member (4) is connected between the transmission member (3) and the housing (100), and the transmission member (3) can move under the elastic force of the elastic member (4) to make the second inclined surface (311) abut against the first inclined surface (21).

4. The contact driving mechanism according to claim 3, characterized in that, A mounting groove (312) is recessed on a side of the transmission member (3) facing away from the second inclined surface (311), and the elastic member (4) is telescopically disposed in the mounting groove (312).

5. The contact driving mechanism according to claim 1, wherein The first engaging portion (11) includes a plurality of first convex teeth (111) arranged at intervals, and the plurality of first convex teeth (111) are distributed in a fan shape around the rotation center of the driving member (1); The second engaging portion (321) includes a plurality of second convex teeth (3211), and the plurality of second convex teeth (3211) are spaced apart along the moving direction of the transmission member (3); The first convex teeth (111) and the second convex teeth (3211) are detachably engaged.

6. The contact driving mechanism according to claim 5, characterized in that, The transmission member (3) includes: A first transmission portion (31), provided with the second inclined surface (311); The second transmission part (32) is convexly provided on the first transmission part (31). An avoidance groove (33) is formed by enclosing between the end face of the second transmission part (32) facing the driving part (1) and the first transmission part (31). The second convex teeth (3211) are convexly provided on the end face of the second transmission part (32) facing the driving part (1), and at least part of the first convex teeth (111) can rotate into the avoidance groove (33).

7. The contact driving mechanism according to claim 5, characterized in that, The driving part (1) rotates between a first position and a second position. After the driving part (1) rotates by a preset angle from the first position, the first convex teeth (111) are engaged with the second convex teeth (3211).

8. The contact driving mechanism according to any one of claims 1-7, characterized in that, A first plane (22) connected to one end of the first inclined plane (21) is provided on the contact support (2), and a second plane (313) connected to one end of the second inclined plane (311) is provided on the transmission part (3). Both the first plane (22) and the second plane (313) are perpendicular to the moving direction of the contact support (2); The contact support (2) has a closed position where the moving contact (400) contacts the static contact (300) and an open position where the moving contact (400) separates from the static contact (300); The contact support (2) in the open position abuts against the second plane (313) through the first plane (22).

9. The contact driving mechanism according to any one of claims 1-7, characterized in that At least two of the first matching parts (11) are spaced apart on the driving part (1); at least two transmission parts (3) are provided, and at least two of the transmission parts (3) are respectively arranged on opposite sides of the driving part (1). The contact support (2) is provided with a first inclined plane (21) corresponding to each transmission part (3); And / or, the dimension of the first inclined plane (21) in the sliding direction (a) is greater than the dimension of the second inclined plane (311) in the sliding direction (a), and the sliding direction (a) is the direction in which the first inclined plane (21) and the second inclined plane (311) are in sliding fit; And / or, the rotation axis of the driving part (1) is parallel to the moving direction of the contact support (2), and the moving direction of the transmission part (3) is perpendicular to the moving direction of the contact support (2).

10. Isolating switch, characterized in that, It includes a housing (100), a knob (200), a static contact (300), a moving contact (400), and a contact driving mechanism as described in any one of claims 1-9. The knob (200) is rotatably provided outside the housing (100) and is connected to the driving part (1). The static contact (300) is installed inside the housing (100), the moving contact (400) is installed on the contact support (2), and the moving contact (400) is used to contact the static contact (300) separably under the drive of the contact support (2).

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