Electric opening and closing mechanism and built-in switch

Abstract

The electric opening and closing mechanism is composed of an electromagnetic operating system and at least one contact mechanism, the electromagnetic operating system comprises a magnet yoke, a coil assembly and a moving assembly, the moving assembly moves along a straight line under the cooperation of the magnet yoke and the coil assembly, and the contact mechanism comprises a moving contact assembly and a static contact. The moving contact assembly comprises a rotating contact support and a moving contact connected to the contact support, the contact support is opposite to one end of the coil assembly in the axial direction parallel to the coil assembly, and the moving assembly directly drives the contact support to rotate. According to the utility model, the electromagnetic operating system drives the moving contact assembly to rotate in the housing, and the contact support converts the linear motion of the electromagnetic operating system into swing, thereby facilitating the reduction of the size and having the advantage of simple structure.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, and particularly to an electric opening and closing mechanism and an internal switch. Background Art

[0002] The prior prepaid electric energy meter mainly realizes the control of the main line power consumption through an internal relay or an external circuit breaker. Due to the low current-carrying capacity of the internal relay, which is prone to faults such as burning or welding, and the large volume and short life of the external circuit breaker, at present, an internal switch is configured in the electric energy meter to realize the control of the main line power consumption.

[0003] In the existing internal switch, its electric opening and closing mechanism usually includes an electromagnetic operating system and a contact mechanism. The moving contact in the contact mechanism usually moves linearly under the drive of the electromagnetic operating system. This structure has the following defects: First, the moving contact and the electromagnetic operating system require a large moving space in the same direction, which is not conducive to reducing the overall volume; Second, when driving multiple moving contacts, the requirements for the electromagnetic operating system are relatively high; Third, when driving multiple moving contacts, a linkage member needs to be configured, and the moving trajectory of the linkage member also needs to occupy space. At the same time, the cooperation between the linkage member, the moving contact, and the electromagnetic operating system further improves the requirements for the electromagnetic operating system when achieving synchronous actions. Summary of the Invention

[0004] The purpose of the utility model is to overcome at least one defect of the prior art and provide an electric opening and closing mechanism and an internal switch.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides an electric opening and closing mechanism, which is composed of an electromagnetic operating system and at least one contact mechanism. The electromagnetic operating system includes a yoke, a coil assembly, and a moving assembly. The moving assembly moves linearly under the cooperation of the yoke and the coil assembly. The contact mechanism includes a moving contact assembly and a static contact. The moving contact assembly includes a contact support rotatably arranged and a moving contact connected to the contact support. The contact support is opposite to one end of the coil assembly in the axial direction parallel to the coil assembly, and the contact support is directly driven to rotate by the moving assembly.

[0007] Furthermore, it includes at least two contact mechanisms. The at least two contact mechanisms are arranged side by side at intervals in the axial direction of the coil assembly. All the contact supports are located at the same end of the coil assembly, and each contact support is connected to the moving assembly.

[0008] Furthermore, all the contact supports are respectively rotatably arranged on the same plane, and the rotation axes of each moving contact assembly are parallel.

[0009] Furthermore, the contact support is provided with a transmission part, the transmission part is provided with a mating groove, the moving component is provided with a mating part, the mating part is inserted and mated with the mating groove, and a space for the mating part to slide is reserved in the mating groove.

[0010] Furthermore, the mating part is a convex shaft, the mating groove is a strip-shaped through groove, and the outer diameter of the mating part is less than or equal to the minimum inner diameter of the mating groove.

[0011] Furthermore, the moving component includes a moving iron core, a push rod and a linkage member. The moving iron core is slidably arranged in the coil bobbin of the coil assembly. One end of the push rod is fixedly connected to the moving iron core, and the other end extends outside the coil bobbin and is fixedly connected to the linkage member. The linkage member is provided with a mating part.

[0012] Furthermore, the linkage member is a strip-shaped structure parallel to the axial direction of the coil assembly. At least two mating parts arranged side by side and spaced apart are provided in the middle of the linkage member. Each mating part is linked and connected to the mating groove of each contact support.

[0013] Furthermore, at least one strip-shaped groove serving as a guiding groove is provided in the middle of the linkage member. The guiding groove is arranged along the direction parallel to the moving component.

[0014] Furthermore, the moving component includes a moving iron core and a push rod. The moving iron core is slidably arranged in the coil bobbin of the coil assembly. One end of the push rod is fixedly connected to the moving iron core, and the other end extends outside the coil bobbin and is provided with a mating part.

[0015] Furthermore, the moving contact assembly further includes a positioning shaft. The positioning shaft is rotatably assembled on the contact support. One end of the moving contact is connected to the positioning shaft, and the positioning shaft rotates together with the moving contact.

[0016] Furthermore, the moving contact assembly further includes a contact spring. The contact spring is coaxially connected to the contact support with the moving contact. The contact spring is elastically connected to the contact support and the moving contact respectively.

[0017] Furthermore, the moving contact includes at least two juxtaposed moving contact pieces. One end of the moving contact piece is rotatably connected to the contact support, and the other end of the moving contact piece is used for mating with the static contact.

[0018] The present utility model also provides an in-built switch, including a housing, and an electric opening and closing mechanism as described above is arranged in the housing.

[0019] Preferably, it further includes at least one pair of wiring terminals. Each pair of wiring terminals is electrically connected to the moving contact assembly and the static contact of a contact mechanism respectively.

[0020] The electric closing and opening mechanism and the built-in switch of the present utility model have an electromagnetic operating system that drives the moving contact assembly to rotate within the housing. The contact support converts the linear motion of the electromagnetic operating system into a swinging motion, reducing the requirements for the electromagnetic operating system and the overall cost, and also avoiding occupying too much space in the same direction, which is beneficial for reducing the volume. At the same time, the moving assembly directly drives the contact support, that is, the electric closing and opening mechanism consists of an electromagnetic operating system and a contact mechanism, and the moving assembly directly drives the contact support, and there is no need for an additional operating mechanism to link them, which has the advantage of simple structure.

[0021] In addition, the mating groove of the transmission part and the mating part of the moving assembly are interlinked, with a simple structure, shortening the moving stroke of the moving assembly and reducing the requirements for the electromagnetic operating system.

[0022] In addition, two or more contact supports are respectively connected to the moving assembly, improving the action consistency.

[0023] In addition, the linkage member is a strip-shaped structure parallel to the axial direction of the coil assembly. By providing at least two mating parts, two or more contact mechanisms can be driven simultaneously, with less requirements for the electromagnetic operating system and better synchronization of actions.

[0024] In addition, the moving contact consists of at least two moving contact pieces arranged in parallel, which can effectively reduce the electric repulsive force between the contacts and improve the current-carrying capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the first embodiment of the electric closing and opening mechanism of the present utility model;

[0026] Figure 2 is the front view of the first embodiment of the electric closing and opening mechanism of the present utility model;

[0027] Figure 3 is the cross-sectional view of the first embodiment of the electric closing and opening mechanism of the present utility model;

[0028] Figure 4 is a schematic structural diagram of the second embodiment of the electric closing and opening mechanism of the present utility model;

[0029] Figure 5 is the front view of the second embodiment of the electric closing and opening mechanism of the present utility model;

[0030] Figure 6 is a schematic structural diagram of the electromagnetic operating system in the second embodiment of the electric closing and opening mechanism of the present utility model;

[0031] Figure 7 is Figure 6 the front view of

[0032] Figure 8It is a schematic structural diagram of the moving contact assembly in the present utility model;

[0033] Figure 9 It is a cross-sectional view of the moving contact assembly in the present utility model;

[0034] Figure 10 It is a schematic diagram of the cooperation between the moving contact and the contact spring in the present utility model;

[0035] Figure 11 It is an exploded schematic diagram of the moving contact assembly in the present utility model;

[0036] Figure 12 It is a schematic structural diagram of the contact spring in the present utility model;

[0037] Figure 13 It is a schematic structural diagram of the contact support in the present utility model;

[0038] Figure 14 It is a cross-sectional view of the contact support in the present utility model;

[0039] Reference numerals:

[0040] 2 - Electromagnetic operating system, 21 - Yoke, 221 - Coil skeleton, 23 - Moving assembly, 231 - Moving iron core, 232 - Push rod, 2321 - Engaging portion, 233 - Linkage member, 2331 - Guide groove, 234 - Fitting portion, 235 - Card slot, 31 - Contact support, 310 - Support body, 311 - Connecting hole, 312 - Transmission portion, 313 - Accommodating cavity, 314 - Fitting groove, 315 - Notch, 316 - Baffle, 32 - Moving contact, 320 - Moving contact piece, 321 - Moving contact point, 34 - Positioning shaft, 341 - Bush, 35 - Contact spring, 350 - Twisted portion, 351 - First abutting portion, 352 - Second abutting portion. Detailed implementation manners

[0041] The following embodiments given in conjunction with the drawings further illustrate the detailed implementation manners of the electric opening and closing mechanism and the built-in switch of the present utility model. The electric opening and closing mechanism and the built-in switch of the present utility model are not limited to the descriptions of the following embodiments.

[0042] The built-in switch includes a housing, an electromagnetic operating system 2, and at least one contact unit. The electromagnetic operating system 2 is disposed within the housing and generally includes a yoke 21, a coil assembly 22, and a moving assembly 23. The yoke 21 cooperates with the coil assembly 22 to drive the moving assembly 23 to move linearly. Each contact unit generally includes a pair of terminal blocks, a contact mechanism, and an arc extinguishing chamber. The pair of terminal blocks are disposed outside the housing, and the contact mechanism and the arc extinguishing chamber are disposed within the housing. The contact mechanism is connected between the pair of terminal blocks to control the on / off of the main circuit in each contact unit. The contact mechanism includes a cooperating moving contact assembly and a static contact. The moving contact assembly includes a contact support 31 and a moving contact 32. The contact support 31 is linked to the moving assembly 23, that is, the moving assembly 23 is directly or indirectly connected to the contact support 31, and the moving contact 32 is connected to the contact support 31 for cooperation with the static contact.

[0043] Generally, the electromagnetic operating system 2 disposed within the housing cooperates with the contact mechanism in each contact unit to form the electric opening and closing mechanism of the built-in switch.

[0044] As Figure 1 、 4 shown, the improvement of the present application lies in that the electric opening and closing mechanism is composed of an electromagnetic operating system and at least one contact mechanism. The contact support 31 is opposite to one end of the coil assembly 22 in the axial direction parallel to the coil assembly 22, and the moving assembly 23 directly drives the contact support 31 to rotate.

[0045] In this way, the electromagnetic operating system 2 drives the moving contact assembly to rotate within the housing. The contact support 31 converts the linear motion of the electromagnetic operating system 2 into a swing, reducing the requirements for the electromagnetic operating system 2 and the overall cost, and also avoiding occupying too much space in the same direction, which is beneficial to reducing the volume. At the same time, the moving assembly 23 directly drives the contact support 31, and no additional operating mechanism is required for linkage between the two, having the advantage of simple structure.

[0046] Specifically, the contact support 31 is provided with a transmission portion 312, and a mating groove 314 is provided on the transmission portion 312. The moving assembly is provided with a mating portion 324. The mating portion 324 is inserted and mated with the mating groove 314, and a space for the mating portion 234 to slide is reserved within the mating groove 314. Preferably, the mating groove 314 is a strip-shaped through groove, and the mating portion 234 is a convex shaft. The outer diameter of the convex shaft is less than or equal to the minimum inner diameter of the strip-shaped through groove. It has the advantage of simple structure. By the sliding fit between the mating portion 324 and the mating groove 314, the moving direction of the contact support 31 is changed, that is, the linear motion is changed into a rotation. Compared with the prior art, it is beneficial to reduce the moving stroke of the moving assembly 23 and reduce the requirements for the electromagnetic operating system 2.

[0047] Furthermore, as Figure 4 、5 As shown, when the electromagnetic operating system 2 includes two or more contact mechanisms, at least two contact mechanisms are arranged side by side at intervals along the axial direction of the coil assembly 22. The contact supports 31 of two adjacent contact mechanisms are respectively rotatably assembled in the same plane. The coil assembly 22 is arranged on one side of all the contact mechanisms. That is, one end of the coil assembly 22 faces a contact support 31 located at the side position. Each contact support 31 is respectively connected to the moving assembly 23, and the moving assembly 23 directly drives and connects all the contact supports 31 at the same time, further improving the action consistency.

[0048] Combined with Figures 1-3 A first embodiment of the electric closing and opening mechanism is provided. In this embodiment, the electromagnetic operating system 2 is linked and connected to a contact mechanism.

[0049] As Figures 1-3 shown, the electromagnetic operating system 2 includes a yoke 21, a coil assembly 22 and a moving assembly 23. The yoke 21 is arranged to surround the outside of the coil assembly 22 and cooperates with the coil assembly 22 to drive the moving assembly 23 to move linearly. The contact mechanism includes a moving contact assembly and a static contact. The moving contact assembly includes a rotatably assembled contact support 31 and a moving contact 32 rotatably connected to the contact support 31. The contact support 31 faces one end of the coil assembly 22 in the axial direction parallel to the coil assembly 22, and the connection line between the contact support 31 and the coil assembly 22 is parallel to the moving track of the moving assembly 23. The moving assembly 23 drives the moving contact assembly to rotate to contact or separate from the static contact.

[0050] Specifically, in this embodiment, as Figure 3As shown in the figure, the coil assembly 22 includes a coil bobbin 221 and a coil. The moving assembly 23 includes a moving iron core 231, a push rod 232, and a linkage member 233. The coil is wound around the outer side of the middle part of the coil bobbin 221. The middle part of the coil bobbin 221 is a hollow cavity. The yoke 21 is disposed around the outer side of the coil bobbin 221. In the figure, the yoke 21 is a frame structure. The coil bobbin 221 and the coil are both located in the yoke 21. The moving iron core 231 is made of a magnetic conductive material. The moving iron core 231 is slidably assembled in the middle part of the coil bobbin 221. Under the cooperation of the yoke 21 and the coil assembly 22, the moving iron core 231 moves linearly in the middle part of the coil bobbin 221. That is, the moving iron core 231 moves along the axis direction parallel to the coil assembly 22. The push rod 232 is made of a non-magnetic conductive material. One end of the push rod 232 is fixedly connected to the moving iron core 231, and the other end passes through the yoke 21 and extends outside the coil bobbin 221 and is fixedly connected to the linkage member 233. Preferably, a protruding engaging portion 2321 is provided at the end of the push rod 232. The linkage member 233 is provided with a slot 235 inserted with the engaging portion 2321. The linkage member 233 is provided with a cooperating portion 234. In this embodiment, the linkage member 233 may be a plate-like structure or a block-like structure with a certain length. The cooperating portion 234 is a convex shaft, and the protruding direction of the convex shaft is perpendicular to the moving track of the push rod 232. Of course, when the length of the push rod 232 is large enough and the number of driven contact mechanisms is small, the linkage member 233 may be omitted. At this time, the cooperating portion 234 may be provided on the push rod 232. At this time, the moving assembly 23 includes the moving iron core 231 and the push rod 232. One end of the push rod 232 is fixedly connected to the moving iron core 231, and the other end extends outside the coil bobbin 221 and is provided with the cooperating portion 234. In addition, when the push rod 232 can be integrally formed with the moving iron core 231, the contact mechanism can also be directly driven by the moving iron core 231. That is, the moving assembly 23 only includes the moving iron core 231 (push rod 232), and the cooperating portion 234 is provided on the moving iron core 231 (push rod 232).

[0051] In addition, the electromagnetic operating system 2 further includes a magnet. The magnet cooperates with the yoke 21 and the coil assembly 22 respectively, and can keep the moving iron core 231 in the closing or opening state. In the energized state, the moving iron core 231 is driven by the yoke 21 and the coil assembly 22 together to move to the opening or closing state. In this way, the electromagnetic operating system 2 does not need to be in the energized state for a long time. Of course, the electromagnetic operating system 2 can also adopt existing magnetic holding products.

[0052] The contact mechanism includes a moving contact assembly and a static contact, as Figures 8-14As shown, the moving contact assembly includes a contact support 31, a moving contact 32 and a contact spring 35. The contact support 31 is rotatably arranged in the housing, and the contact support 31 is opposite to one end of the coil assembly 22. The moving assembly 23 moves in a straight line between the contact support 31 and the coil assembly 22, and the contact support 31 is driven to rotate by the moving assembly 23. At the same time, during the rotation of the contact support 31, relative sliding occurs between the contact support 31 and the moving assembly 23; one end of the moving contact 32 is rotatably connected to the contact support 31, and the other end is provided with a moving contact point 321 for cooperating with the static contact point of the static contact. The contact spring 35 is arranged between the contact support 31 and the moving contact, and the contact spring 35 provides contact pressure for the moving contact 32. Preferably, the moving contact 32 and the contact spring 35 are coaxially rotatably assembled on the contact support 31. In this embodiment, the moving contact 32 and the contact spring 35 are assembled on the positioning shaft 34, and the rotation of the moving contact 32 simultaneously drives the rotation of the positioning shaft 34.

[0053] like Figures 8-14 As shown, the contact support 31 is provided with a transmission part 312, and the transmission part 312 and the moving contact 32 are respectively located on opposite sides of the contact support 31, and a matching groove 314 is provided on the transmission part 312. Figures 8-11 , 13 and 14, the mating groove 314 is a strip-shaped through groove, and a mating portion 234 is provided on the moving component 23. The mating portion 234 is a convex shaft, and the outer diameter of the convex shaft is less than or equal to the minimum inner diameter of the mating groove 314, that is, the space reserved for the strip-shaped through groove in its length direction. When the moving component 23 moves in a straight line, the mating portion 234 first links with the mating groove 314 to drive the contact support 31 to rotate. During the rotation of the contact support 31, the mating portion 234 slides in the mating groove 314, thereby completing the driving of the moving contact assembly. In this way, the mating portion 234 with a simple structure is slidably mated with the mating groove 314, and the moving contact assembly can be driven by moving a small distance, thereby shortening the moving stroke of the moving component 23 and reducing the requirements for the electromagnetic operating system 2.

[0054] Combination Figure 8 , 9Numbers 11, 13, and 14 provide a structure for the contact support 31 applied in this embodiment. The contact support 31 includes a support body 310 in the shape of a circular shaft. A receiving cavity 313 is provided in the middle of the support body 310. An opening is provided on the side of the support body 310 corresponding to the receiving cavity 313. A notch 315 is provided on one edge of the opening. Connecting holes 311 penetrating the receiving cavity 313 are provided at both ends of the support body 310. A positioning shaft 34 is arranged in the connecting hole 311 so that the positioning shaft 34 penetrates into the receiving cavity 313. One end of the moving contact 32 is connected to the positioning shaft 34 and the positioning shaft 34 rotates as the moving contact 32 rotates. That is, one end of the moving contact 32 and the contact spring 35 are arranged in the receiving cavity 313. Transmission parts 312 and a baffle 316 are respectively provided on opposite sides of the support body 310. In the figure, the transmission part 312 is a convex platform structure protruding, and the number of the transmission parts 312 is two, and they respectively correspond to opposite ends of the receiving cavity 313. The transmission part 312 is provided with a strip-shaped through groove serving as a mating groove 314, and the penetration direction of the mating groove 314 is parallel to the axial direction of the support body 310. The same mating part 234 arranged on the linkage 233 penetrates through the mating grooves 314 on the two transmission parts 312 of the same contact support 31. Of course, the interval left between the two transmissions 312 can also allow the linkage 233 to pass through, so that the mating parts 234 on the front and back sides at the same position of the linkage 233 are respectively mated with the mating grooves 314 of the two penetrated parts 312; Baffle Of course, when only one transmission part 312 is provided on the contact support 31, it can also be linked with the transmission member 233, but the stability may be slightly worse.

[0055] The baffle 316 is connected to one edge of the opening provided with the notch 315. Figures 13-14 In, the baffle 316 is formed by extending outward from the edge area of the support body 310. The middle part of the moving contact 32 extends out from the notch 315 and cooperates with the baffle 316.

[0056] Such as Figure 8 、 10 As shown in 11, the moving contact 32 includes at least two moving contact pieces 320 arranged in parallel. The two moving contact pieces 320 are preferably connected together to ensure the consistency of movement. One end of each moving contact piece 320 is rotatably connected to the positioning shaft 34, and the other end is provided with a moving contact point 321 for cooperating with the static contact point of the static contact. By providing at least two moving contact pieces 320, it is beneficial to improve the current-carrying capacity; Of course, the moving contact 32 can also only include one moving contact piece 320, or the moving contact 32 and the static contact cooperating with the moving contact 32 can also adopt the prior art.

[0057] Such as Figure 11 、 12As shown, the contact spring 35 includes two torsion springs. Each torsion spring includes a twisted portion 350. The two twisted portions 350 are assembled on the positioning shaft 34, and a connection space for connecting the moving contact 32 is left between the two twisted portions 350. One end of each twisted portion 350 extends outward to form a first elastic arm that abuts against the moving contact 32, and the other end of each twisted portion 350 extends outward to form a second elastic arm that abuts against the contact support 31. The extending directions of the first elastic arm and the second elastic arm are both parallel to the axial direction of the twisted portion 350. In this embodiment, the first elastic arms of the two torsion springs are connected to form a first abutting portion 351, and the second elastic arms of the two torsion springs are connected to form a second abutting portion 352, and both the first abutting portion 351 and the second abutting portion 352 span the connection space. Of course, the contact spring 35 can also be a single torsion spring, but its stability may be poor.

[0058] In addition, a bushing 341 is sleeved outside the positioning shaft 34, and at least part of the bushing 341 is located between the outside of the contact spring 35 and the positioning shaft 34 to prevent the contact spring 35 from jamming the positioning shaft 34 and making the positioning shaft 34 unable to rotate together with the moving contact 32.

[0059] Combined Figures 4-7 A second embodiment of the electric opening and closing mechanism is provided. In this embodiment, the electromagnetic operating system 2 is linked and connected to three contact mechanisms. Among them, the electromagnetic operating system 2 and each contact mechanism can adopt the structures in the first embodiment. Different from the first embodiment, the length of the linkage member 233 in this embodiment is larger, and three side-by-side and spaced matching portions 234 are provided on the linkage member 233 for driving connection with the moving contact assemblies of the three contact mechanisms respectively.

[0060] Specifically, the three moving contact assemblies are rotatably arranged on the same plane, that is, the contact supports 31 of the three moving contact assemblies are rotatably arranged on the same plane, and the three moving contact assemblies are spaced along the direction parallel to the moving track of the moving assembly 23. One end of the electromagnetic operating system 2 faces an adjacent moving contact assembly. In this embodiment, all the moving contact assemblies are linked and connected to the moving assembly 23. That is, the moving assembly 23 is provided with a matching portion 234, and the contact support 31 is provided with a matching groove 314. The matching groove 314 reserves a space for the matching portion 234 to slide, so that the contact support 31 is directly driven by the moving assembly 22 to rotate, thus ensuring the action consistency of the three moving contact assemblies.

[0061] In this embodiment, the linkage member 233 is simultaneously drivingly connected to the three contact supports 31. The linkage member 233 is provided with three side-by-side and spaced matching portions 234 along the direction of the moving track. The number of the matching portions 234 is preferably matched with the number of the matching grooves 314. The shapes and matching principles of the matching portions 234 and the matching grooves 314 are the same as those in the first embodiment.

[0062] As shown Figures 4-7 in the figure, the linkage 233 synchronously drives the three contact supports 31. The length of the linkage 233 is relatively large, and the linkage 233 is a strip-shaped plate structure. The linkage 233 moves linearly along its length direction. That is, the linkage 233 is provided with a row of spaced matching parts 234 along its length direction. Each matching part 234 is linked and connected with the matching groove 314 of a contact support 31 respectively.

[0063] In this embodiment, one end of the linkage 233 is inserted into one end of the push rod 232. Preferably, one end of the linkage 233 is provided with a clamping groove 235, and one end of the push rod 232 is provided with a clamping part 2321. The clamping part 2321 and the clamping groove 235 are inserted into each other, which has the advantages of convenient assembly and stable connection. Of course, when the push rod 232 is not provided, the clamping part 2321 can be directly arranged at one end of the moving iron core 231; a strip-shaped groove is provided in the middle of the linkage 233 and can be used as a guiding groove 2331. The guiding groove 2331 is arranged along the moving track of the linkage 233. In this embodiment, at least two parallel guiding grooves 2331 are arranged on the linkage 233, and the guiding groove 2331 is a through groove with a certain length, which is also beneficial to reducing its overall weight. A guiding part (not shown) can be arranged on the inner side wall of the housing 1. The guiding part is slidably matched with the guiding groove 2331 to limit the moving track of the linkage 233 and ensure that its moving process will not deviate.

[0064] In addition, in this embodiment, each matching part 234 protrudes from the front and back sides of the same position of the linkage 233. After the linkage 233 passes through the interval between the two transmission parts 312, both ends of each matching part 234 are linked and connected with the matching grooves 314 of the two transmission parts 312 on the same contact support 31 respectively, which improves the driving stability between the linkage 233 and the contact support 31.

[0065] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when in use and commonly placed, and is only for the convenience of description, rather than indicating that the device or element referred to must have a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating relative importance.

[0066] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model pertains, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the protection scope of the present utility model.

Claims

1. Electric opening and closing mechanism, characterized by: The invention is composed of an electromagnetic operating system (2) and at least one contact mechanism, wherein the electromagnetic operating system (2) comprises a yoke (21), a coil assembly (22) and a moving assembly (23), wherein the moving assembly (23) moves along a straight line in cooperation with the yoke (21) and the coil assembly (22), and the contact mechanism comprises a moving contact assembly and a stationary contact, wherein the moving contact assembly comprises a rotatably arranged contact support (31) and a moving contact (32) connected to the contact support (31), wherein the contact support (31) is opposite to one end of the coil assembly (22) in an axial direction parallel to the coil assembly (22), and the moving assembly (23) directly drives the contact support (31) to rotate.

2. The electric opening and closing mechanism according to claim 1 is characterized in that: It comprises at least two contact mechanisms, which are arranged in parallel and spaced apart in sequence along the axial direction of the coil assembly (22), all the contact supports (31) are located at the same end of the coil assembly (22), and each contact support (31) is connected to the moving assembly (23).

3. The electric opening and closing mechanism according to claim 2 is characterized in that: All the contact supports (31) are rotatably arranged on the same plane, and the rotation axes of each moving contact assembly are parallel.

4. The electric opening and closing mechanism according to claim 1 or 3, characterized in that: The contact support (31) is provided with a transmission part (312), the transmission part (312) is provided with a matching groove (314), the moving component (23) is provided with a matching part (234), the matching part (234) is plug-fitted with the matching groove (314), and the matching groove (314) reserves a space for the matching part (234) to slide.

5. The electric opening and closing mechanism according to claim 4 is characterized in that: The matching portion (234) is a convex shaft, the matching groove (314) is a strip-shaped through groove, and the outer diameter of the matching portion (234) is less than or equal to the minimum inner diameter of the matching groove (314).

6. The electric opening and closing mechanism according to claim 4, characterized in that: The moving assembly (23) comprises a moving iron core (231), a push rod (232) and a linkage member (233); the moving iron core (231) is slidably disposed in a coil frame (221) of the coil assembly (22); one end of the push rod (232) is fixedly connected to the moving iron core (231), and the other end extends out of the coil frame (221) and is fixedly connected to the linkage member (233); the linkage member (233) is provided with a matching portion (234).

7. The electric opening and closing mechanism according to claim 6, characterized in that: The linkage member (233) is a strip-shaped structure parallel to the axial direction of the coil assembly (22), and at least two matching portions (234) arranged side by side and at intervals are provided in the middle of the linkage member (233), and each matching portion (234) is linked to the matching groove (314) of each contact support (31).

8. The electric opening and closing mechanism according to claim 7, characterized in that: At least one strip groove serving as a guide groove (2331) is provided in the middle of the linkage member (233), and the guide groove (2331) is arranged in a direction parallel to the moving component (23).

9. The electric opening and closing mechanism according to claim 4, characterized in that: The moving assembly (23) comprises a moving iron core (231) and a push rod (232); the moving iron core (231) is slidably disposed in a coil frame (221) of the coil assembly (22); one end of the push rod (232) is fixedly connected to the moving iron core (231), and the other end extends out of the coil frame (221) and is provided with a matching portion (234).

10. The electric opening and closing mechanism according to claim 1, characterized in that: The moving contact assembly also includes a positioning shaft (34), which is rotatably mounted on the contact support (31), one end of the moving contact (32) is connected to the positioning shaft (34), and the positioning shaft (34) rotates together with the moving contact (32).

11. The electric opening and closing mechanism according to claim 1, characterized in that: The moving contact assembly also includes a contact spring (35), which is coaxially connected to the contact support (31) with the moving contact (32), and the contact spring (35) is elastically connected to the contact support (31) and the moving contact (32) respectively.

12. The electric opening and closing mechanism according to claim 1, characterized in that: The moving contact (32) comprises at least two moving contact pieces (320) arranged in parallel, one end of the moving contact piece (320) is rotatably connected to the contact support (31), and the other end of the moving contact piece (320) is used to cooperate with the stationary contact.

13. A built-in switch, including a housing, characterized in that: An electric opening and closing mechanism according to any one of claims 1 to 12 is arranged in the housing.

14. The built-in switch according to claim 13, characterized in that: It also includes at least one pair of wiring terminals, and each pair of wiring terminals is electrically connected to a moving contact assembly and a static contact of a contact mechanism.

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