Contact device and control switch

Abstract

The invention provides a contact device and a control switch, and relates to the technical field of low-voltage apparatuses, the contact device comprises a plurality of static contacts and a moving contact assembly which is used for being matched with the plurality of static contacts in a switching manner to form different conductive loops, the plurality of static contacts are integrated, and the moving contact is matched with the static contacts in a switching manner, so that the conductive loops are formed. Therefore, each conductive loop can be controlled. High cost and large volume caused by simple superposition of the number of contactors in the prior art can be avoided, miniaturization of the contact device is facilitated, and market requirements are better met.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a contact device and a control switch. Background Art

[0002] With the rapid development of economy and the rapid improvement of people's living standards, there is a higher demand for electricity safety. A contactor is a device that can quickly cut off the AC and DC main circuits and can frequently connect and disconnect high current control circuits. The contactor can not only connect and disconnect the circuit, but also has a low voltage release protection function. The contactor has a large control capacity and is suitable for frequent operation and remote control. It is one of the important components in the automatic control system.

[0003] In actual use, existing contactors generally adopt a control logic in which one circuit is controlled by one contactor. Therefore, to control multiple circuits, it is necessary to stack multiple independent contactors. Simply stacking and matching multiple contactors is likely to result in higher costs and larger volumes, making it difficult to meet market demand. Summary of the invention

[0004] The purpose of the present application is to provide a contact device and a control switch to address the deficiencies in the above-mentioned prior art.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0006] According to one aspect of an embodiment of the present application, a contact device is provided, comprising a plurality of stationary contacts and a moving contact assembly for switching with the plurality of stationary contacts to form different conductive circuits, the moving contact assembly comprising a moving contact, a moving iron core assembly and a first coil sleeved on the outer circumference of the moving iron core assembly; the moving iron core assembly comprises a first moving iron core and a second moving iron core which are arranged axially along the first coil and have a gap, the first moving iron core is connected to the moving contact via a rotating shaft, and the first moving iron core and the second moving iron core have a first matching portion and a second matching portion which match each other on opposite ends, and the first matching portion and the second matching portion extend spirally around the rotating shaft respectively; when the first coil is energized, the second moving iron core is restricted from rotating, and the first moving iron core is forced to rotate relative to the second moving iron core, so that the first matching portion and the second matching portion are close to each other, and the moving contact is driven to switch and match with the plurality of stationary contacts via the rotating shaft.

[0007] Optionally, the contact device also includes a static attraction part, which is located at one end of the first moving iron core away from the second moving iron core, and a second coil is also sleeved on the outer periphery of the moving iron core assembly and arranged axially with the first coil; when the second coil is energized, at least the first moving iron core is driven to move toward the static attraction part to drive the moving contact to contact and close the corresponding static contact.

[0008] Optionally, the contact device also includes a static attraction part, which is located at one end of the second moving iron core away from the first moving iron core, and the second moving iron core cooperates with the rotating shaft along the axial drive of the first coil, and a second coil is also sleeved on the outer periphery of the moving iron core assembly and arranged along the axial direction of the first coil; when the second coil is energized, the second moving iron core drives the first moving iron core to move toward the static attraction part via the rotating shaft, and drives the moving contact to contact and close the corresponding static contact.

[0009] Optionally, a spacer is further provided in the gap between the first moving iron core and the second moving iron core, and opposite ends of the spacer are respectively abutted against ends of the first moving iron core and the second moving iron core, and the spacer is used to define the gap between the first moving iron core and the second moving iron core.

[0010] Optionally, the first matching portion and the second matching portion respectively have opposite first surfaces, and the first surfaces are spiral surfaces or step surfaces.

[0011] Optionally, the first matching portion and the second matching portion respectively have opposite first surfaces, and the first surface of the first matching portion and the first surface of the second matching portion have parallel sections that are parallel to each other.

[0012] Optionally, a central angle corresponding to the orthographic projection of the parallel segment on the radial cross section of the first coil is greater than 0° and less than 360°.

[0013] Optionally, the central angle is greater than or equal to 90° and less than or equal to 270°.

[0014] Optionally, one end of the rotating shaft away from the moving contact is fixedly inserted into the first moving iron core and is rotatably connected to the second moving iron core. When the second coil is energized, the first moving iron core is driven to drive the second moving iron core to move toward the static attraction part.

[0015] Optionally, the contact device also includes a sleeve located between the first coil and the moving iron core assembly, the static attraction part is located at one end of the sleeve, the first moving iron core and the second moving iron core are slidably arranged on the sleeve, and the first moving iron core is rotatably cooperated with the sleeve, and a limiting part is arranged on the sleeve, and the limiting part is used to limit the rotation of the second moving iron core relative to the sleeve.

[0016] Optionally, the static attraction part is a yoke plate and / or a static iron core.

[0017] Optionally, the moving contact assembly further includes a first elastic member cooperating with the first moving iron core, and the first elastic member is used to provide a rotational restoring force to the first moving iron core.

[0018] Optionally, the moving contact assembly further comprises a second elastic member cooperating with the moving iron core assembly, and the second elastic member is used to provide a switch-off resetting force away from the static attraction portion to the moving iron core assembly.

[0019] Optionally, the contact device further includes a first magnetic yoke assembly and a second magnetic yoke assembly, wherein the first magnetic yoke assembly is used to cooperate with the first coil to form a first magnetic circuit, and the second magnetic yoke assembly is used to cooperate with the second coil to form a second magnetic circuit.

[0020] Another aspect of the embodiments of the present application provides a control switch comprising any one of the contact devices described above.

[0021] The beneficial effects of this application include:

[0022] The present application provides a contact device and a control switch, including a plurality of stationary contacts and a moving contact assembly for switching with the plurality of stationary contacts to form different conductive circuits, the moving contact assembly including a moving contact, a moving iron core assembly and a first coil sleeved on the outer periphery of the moving iron core assembly; the moving iron core assembly includes a first moving iron core and a second moving iron core arranged along the axial direction of the first coil and having a gap, the first moving iron core is connected to the moving contact via a rotating shaft, the first moving iron core and the second moving iron core have a first matching portion and a second matching portion that match each other on the opposite ends, and the first matching portion and the second matching portion extend spirally around the rotating shaft respectively; when the first coil is energized, the second moving iron core is restricted from rotating, the first moving iron core is forced to rotate relative to the second moving iron core, so that the first matching portion and the second matching portion are close to each other, and the moving contact is driven to switch and match with the plurality of stationary contacts via the rotating shaft. By integrating the plurality of stationary contacts and making the moving contact match with them by switching, it is possible to achieve control of each conductive circuit. The high cost and large volume caused by simply stacking the number of contactors in the prior art can be avoided, which is conducive to the miniaturization of the contact device, thereby better meeting market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 One of the structural schematic diagrams of a contact device provided in an embodiment of the present application;

[0025] Figure 2 A second structural schematic diagram of a contact device provided in an embodiment of the present application;

[0026] Figure 3 One of the structural schematic diagrams of a moving iron core assembly provided in an embodiment of the present application;

[0027] Figure 4 A second structural schematic diagram of a moving iron core assembly provided in an embodiment of the present application;

[0028] Figure 5 A schematic structural diagram of a first moving iron core provided in an embodiment of the present application;

[0029] Figure 6 A schematic diagram of the structure of a second moving iron core provided in an embodiment of the present application;

[0030] Figure 7 A schematic projection diagram of a first matching portion and a parallel section of a second matching portion provided in an embodiment of the present application;

[0031] Figure 8 A schematic structural diagram of another moving iron core assembly provided in an embodiment of the present application;

[0032] Fig. 9 A schematic structural diagram of another first moving iron core provided in an embodiment of the present application;

[0033] Fig.10 A schematic diagram of the structure of another second moving iron core provided in an embodiment of the present application;

[0034] Fig.11 A schematic projection diagram of another parallel section of a first matching portion and a second matching portion provided in an embodiment of the present application;

[0035] Fig.12 A third structural schematic diagram of a contact device provided in an embodiment of the present application;

[0036] Fig.13 A fourth structural schematic diagram of a contact device provided in an embodiment of the present application;

[0037] Fig.14 A third structural schematic diagram of a moving iron core assembly provided in an embodiment of the present application;

[0038] Fig.15 A fifth structural schematic diagram of a contact device provided in an embodiment of the present application;

[0039] Fig.16 A sixth structural schematic diagram of a contact device provided in an embodiment of the present application;

[0040] Fig.17 A seventh structural schematic diagram of a contact device provided in an embodiment of the present application;

[0041] Fig.18 An eighth structural schematic diagram of a contact device provided in an embodiment of the present application;

[0042] Fig.19 A schematic diagram of the structure of a control switch provided in an embodiment of the present application.

[0043] Icons: 10-control switch; 110-static contact; 111-first sub-contact; 112-second sub-contact; 120-moving contact; 130-moving iron core assembly; 140-first moving iron core; 141-first matching portion; 1411-first surface of the first matching portion; 150-second moving iron core; 151-second matching portion; 1511-first surface of the second matching portion; 152-first section; 160-gap; 170-rotating shaft; 171-tray; 172-center axis; 180-static attraction portion; 181-static iron core; 182-yoke plate; 190-sleeve; 192-outward folded edge; 201-parallel section; 202-radial section of the first coil; 211-second yoke assembly; 212-first yoke assembly; 221-second coil; 222-first coil; 230-housing; 240-spacer. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

[0045] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0046] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In one aspect of an embodiment of the present application, a contact device is provided, such as Figure 1As shown, the contact device includes a moving contact assembly and a plurality of stationary contacts 110, wherein each stationary contact 110 can be connected to a conductive circuit. Therefore, the contact device can be connected to a plurality of different conductive circuits through a plurality of stationary contacts 110. The moving contact assembly can cooperate with a plurality of stationary contacts 110, that is, the moving contact assembly can switch back and forth between a plurality of stationary contacts 110, so as to facilitate on-off control of different conductive circuits.

[0048] It should be understood that when each conductive loop is disconnected, the number of breakpoints can be any one of a single breakpoint, a double breakpoint, etc., and this application does not impose any specific restrictions on it. For example Figure 1 As shown, two stationary contacts 110 are shown, wherein one of the stationary contacts 110 includes two first sub-contacts 111 connected to the first conductive circuit, and the other stationary contact 110 includes two second sub-contacts 112 connected to the second conductive circuit. Therefore, when the first conductive circuit is disconnected, a double breakpoint can be formed by the two first sub-contacts 111. Similarly, when the second conductive circuit is disconnected, a double breakpoint can be formed by the two second sub-contacts 112, which helps to improve the reliability of the conductive circuit disconnection. The moving contact assembly can switch between the two first sub-contacts 111 and the two second sub-contacts 112, that is, the moving contact assembly can cooperate with the two first sub-contacts 111 to control the on and off of the first conductive circuit, and can also cooperate with the two second sub-contacts 112 to control the on and off of the second conductive circuit. Of course, the present application is not limited to Figure 1 The example of two stationary contacts 110 shown in the figure may also be three stationary contacts 110 , four stationary contacts 110 , etc. When setting them, they may be set with reference to the example of two stationary contacts 110 .

[0049] In order to enable the moving contact assembly to switch between different stationary contacts 110 for coordination, the moving contact assembly can be driven to move based on the electromagnetic principle. Specifically, Figure 2 As shown, the moving contact assembly includes a moving contact 120, a moving iron core assembly 130, and a first coil 222 ( Figure 2 Not shown, please refer to Fig.18 ), wherein the moving contact 120 cooperates with multiple static contacts 110, and the moving iron core assembly 130 includes a first moving iron core 140 and a second moving iron core 150, and the first moving iron core 140 and the second moving iron core 150 are arranged axially and at intervals along the first coil 222, so as to form a gap 160 by utilizing the spacing between the first moving iron core 140 and the second moving iron core 150.

[0050] Please continue to refer to Figure 2As shown, the first moving iron core 140 is connected to the moving contact 120 via the rotating shaft 170. Therefore, when the first coil 222 is energized, the first moving iron core 140 can drive the moving contact 120 to rotate with the rotating shaft 170 as the central axis 172 via the rotating shaft 170, so that the moving contact 120 cooperates with different stationary contacts 110. Of course, the present application does not limit the rotation angle of the first moving iron core 140, which can be 45°, 90°, 135°, etc. Figure 2 The state shown is the initial position, at which the first coil 222 is not energized, and the moving contact 120 is located below the first sub-contact 111 so as to correspond thereto. Fig.15 As shown, the first coil 222 can be energized to act on the first moving iron core 140, so that the first moving iron core 140 drives the moving contact 120 to rotate through the rotating shaft 170 under the action of the magnetic field, and then the position of the moving contact 120 is switched to below the second sub-contact 112 to correspond thereto. Figure 2 or Fig.15 In the example shown, when the moving contact 120 is located below the stationary contact 110, it does not contact the stationary contact 110. If contact or disconnection is required, it can be achieved by cooperating with the subsequent second coil 221 and the stationary attraction portion 180. Of course, in other examples, when the moving contact 120 moves below the stationary contact 110, it directly contacts the stationary contact 110, thereby achieving the connection of the conductive circuit. If disconnection is required, the moving contact 120 can be rotated to separate from the stationary contact 110.

[0051] In order to facilitate the first moving iron core 140 to smoothly drive the moving contact 120 to rotate when the first coil 222 is energized, please refer to Figure 3 As shown, the first moving iron core 140 has a first matching portion 141 at one end close to the second moving iron core 150, and the second moving iron core 150 has a second matching portion 151 at one end close to the first moving iron core 140. Figure 5 and Figure 6As shown, the first matching portion 141 and the second matching portion 151 both take the rotating shaft 170 as the central axis 172 and extend spirally around it, so that the first matching portion 141 and the second matching portion 151 have a height difference along their spiral direction, and then tilt in the direction of the central axis 172. It should be understood that the aforementioned gap 160 is still present between the first matching portion 141 and the second matching portion 151. When the first coil 222 is energized, the first moving iron core 140 and the second moving iron core 150 tend to approach each other, but are limited by the fact that the two cannot directly move along the direction of the central axis 172 to approach each other, and the second moving iron core 150 is restricted from rotating. Therefore, the first moving iron core 140 will be forced to rotate around the central axis 172 relative to the second moving iron core 150, so that the first matching portion 141 and the second matching portion 151 are close to each other. As the first moving iron core 140 rotates, the moving contact 120 will also be driven to rotate via the rotating shaft 170, thereby achieving the purpose of switching and matching between the moving contact 120 and multiple static contacts 110.

[0052] In summary, the present application first integrates multiple static contacts 110, and enables the dynamic contact 120 to cooperate with the static contacts 110 by switching, so as to realize the control of each conductive circuit. It can avoid the high cost and large volume caused by the simple superposition of the number of contactors in the prior art, which is conducive to the miniaturization of the contact device, so as to better meet the market demand.

[0053] Optional, such as Figure 4 As shown, a spacer 240 is further provided in the gap 160 between the first moving iron core 140 and the second moving iron core 150, and the opposite ends of the spacer 240 are respectively in contact with the ends of the first moving iron core 140 and the second moving iron core 150, thereby defining the size of the gap between the first moving iron core 140 and the second moving iron core 150 through the spacer 240, that is, defining the size of the spacing between the first moving iron core 140 and the second moving iron core 150. Therefore, by providing the spacer 240, it is possible to limit the first moving iron core 140 and the second moving iron core 150 from approaching each other through axial movement, so that when the first coil 222 is energized, the first moving iron core 140 can be caused to rotate relative to the second moving iron core 150. The spacer 240 can be integrally formed with the rotating shaft 170, that is, the spacer 240 can be a feature on the rotating shaft 170. Of course, as shown in FIG. Figure 4 As shown, the spacer 240 can also be an annular spacer sleeved on the rotating shaft 170. The present application does not impose any restriction on its specific structural form, as long as the spacer 240 can limit the first moving iron core 140 and the second moving iron core 150 from approaching each other through axial movement, and does not interfere with the rotation of the first moving iron core 140 relative to the second moving iron core 150.

[0054] Optional, please combine Figures 3 to 6As shown, the first matching portion 141 has a first surface close to the second moving iron core 150, and the second matching portion 151 also has a first surface close to the first moving iron core 140, wherein the first surface 1411 of the first matching portion and the first surface 1511 of the second matching portion can be spiral surfaces. Of course, in other examples, the first surface 1411 of the first matching portion and the first surface 1511 of the second matching portion can also be ascending or descending stepped surfaces. This application does not impose specific restrictions on them, and they can be reasonably set according to actual needs. In addition, this application does not limit the number of first matching portions and second matching portions, and of course, there is no limit on the number of first surfaces, for example Figure 5 and Figure 6 As shown, the end of the first moving iron core 140 has a first matching portion 141, and the first matching portion 141 can have a first surface. The end of the second moving iron core 150 has a second matching portion 151, and the second matching portion 151 can have a first surface. In addition, in other examples, the end of the first moving iron core 140 can have at least two first matching portions 141, and the number of first surfaces on each first matching portion 141 can also be one or more. Similarly, the end of the second moving iron core 150 can have at least two first matching portions 141, and the number of first surfaces on each first matching portion 141 can also be one or more.

[0055] Optionally, in order to facilitate the smooth rotation of the first moving iron core 140 when the first coil 222 is energized, the first surface 1411 of the first matching portion and the first surface 1511 of the second matching portion may have parallel sections 201 that are parallel to each other. Figure 5 and Figure 6 Describe: Figure 5 In the embodiment, the first surface 1411 of the first matching portion has a second section b and a third section c connected in sequence along the spiral direction. At the same time, the end surface of the first moving iron core 140 also has a first section a located on the side of the second section b away from the third section c. The central angle of the orthographic projection of each section along the direction of the central axis 172 can be 90 degrees. The heights of the three sections along the direction of the central axis 172 gradually increase. Similarly, Figure 6As shown, the first surface 1511 of the second matching portion has a fifth segment e and a sixth segment f connected in sequence along the spiral direction. At the same time, the end surface of the second moving iron core 150 also has a fourth segment d located on the side of the fifth segment e away from the sixth segment f. The central angle corresponding to the orthographic projection of each segment along the direction of the central axis 172 can be 90 degrees. The height of the three segments along the direction of the central axis 172 gradually increases. Among them, in the initial position, the second segment b can form a parallel segment 201 with the fifth segment e. Of course, the first segment a can form a non-parallel segment with the sixth segment f, and the third segment c can also form a non-parallel segment with the fourth segment d. Therefore, after the first coil 222 is energized, the parallel segment 201 formed by the second segment b and the fifth segment e can be used to provide a rotational force to the first moving iron core 140, thereby prompting the first moving iron core 140 to rotate around the central axis 172. After rotating to 90 degrees, the second segment b can be parallel to the sixth segment f, and the third segment c can be parallel to the fifth segment e.

[0056] Optional, such as Figure 7 As shown, the first coil radial section 202 is perpendicular to the central axis 172, and the orthographic projection of the parallel segment 201 on the first coil radial section 202 is Figure 7 As shown in the filled area, and because the first matching portion 141 and the second matching portion 151 both extend spirally around the central axis 172, when the central axis 172 is taken as the center of the circle along the projection direction, the central angle θ corresponding to the orthographic projection of the parallel segment 201 can satisfy a value greater than 0° and less than 360° ( Figure 7 The central angle θ shown in FIG. 2 is 90°). Moreover, it should be understood that when the central angle θ corresponding to the parallel section 201 is larger, the rotational force generated by the first moving iron core 140 when the first coil 222 is energized is larger, and a reasonable selection can be made according to actual needs.

[0057] Optionally, the central angle may satisfy: 90°≤θ≤270°, for example Figure 7 Of course, it can also be 180°, 270°, etc. In another example, Figures 8 to 11 As shown, the center angle of the orthographic projection corresponding to the parallel section 201 of the first surface 1411 of the first matching portion and the first surface 1511 of the second matching portion may be 270°. Figures 9 to 11 Describe: Fig. 9 In the embodiment, the first surface 1411 of the first matching portion has a seventh segment g that is spirally raised along the spiral direction, and the central angle corresponding to the orthographic projection of the seventh segment g along the direction of the central axis 172 can be 270 degrees. Similarly, Fig.10 As shown, the first surface 1511 of the second matching portion has an eighth segment h along the spiral direction. In the initial position, the seventh segment g and the eighth segment h can form a parallel segment 201. Fig.11As shown, the orthographic projection of the parallel segment 201 formed by the seventh segment g and the eighth segment h on the radial section 202 of the first coil is Fig.11 As shown in the filled area, along the projection direction with the central axis 172 as the center, the center angle θ corresponding to the positive projection of the parallel segment 201 formed by the seventh segment g and the eighth segment h is 270°. Therefore, after the first coil 222 is energized, the seventh segment g can be used to form the parallel segment 201 with the eighth segment h to provide a larger rotational force to the first moving iron core 140, thereby prompting the first moving iron core 140 to rotate around the central axis 172.

[0058] When the same moving contact 120 is switched with multiple stationary contacts 110, in order to improve the reliability and accuracy of the on-off control of the conductive circuit, such as Figure 7 or Fig.12 As shown, the contact device further includes a static attraction portion 180, which is located at one end of the first moving iron core 140 away from the second moving iron core 150. At the same time, a second coil 221 ( Figure 7 and Fig.12 Not shown in the figure, you can refer to Fig.18 ), and the second coil 221 and the first coil 222 are arranged linearly along the axis of the first coil 222, the first coil 222 can be correspondingly sleeved on the outer periphery of the second moving iron core 150, and the second coil 221 can be correspondingly sleeved on the outer periphery of the first moving iron core 140, that is, the second coil 221 is closer to the static attraction part than the first coil 222, and at the same time, the gap 160 between the first moving iron core 140 and the second moving iron core 150 can be located inside the first coil 222, so that when the second moving iron core 150 is restricted from rotating and the first coil 222 is energized, the first moving iron core 140 can rotate relative to the second moving iron core 150, in addition, the gap between the first moving iron core 140 and the static attraction part 180 can be located in the second coil 221, so that when the second coil 221 is energized, the first moving iron core 140 can be prompted to move toward the static attraction part 180.

[0059] Therefore, when the second coil 221 is energized, at least the first moving iron core 140 can be driven to move toward the static attraction part 180, thereby driving the moving contact 120 located below the static contact 110 (there is a gap between the moving contact 120 and the static contact 110) to contact the corresponding static contact 110 above it, thereby achieving closing of the circuit, that is, achieving connection of the conductive circuit.

[0060] Since the first coil 222 and the second coil 221 both have two states of being energized and being de-energized, they can be combined to achieve the on-off control of different conductive circuits by the moving iron core assembly 130. Figure 2The state shown is the initial state, that is, at this time, the moving contact 120 and the first moving iron core 140 are both in the initial position. As mentioned above, the moving contact 120 is located below the first sub-contact 111 and there is a distance between the two along the direction of the center axis 172. Therefore, in the initial state, the moving contact 120 can be reliably disconnected from the first sub-contact 111, causing the first conductive circuit to be disconnected, and of course, the second conductive circuit is also disconnected.

[0061] When it is necessary to connect the second conductive circuit to which the second sub-contact 112 is connected, Figure 2 Based on the above, the first coil 222 is energized, while the second coil 221 is de-energized. Fig.14 and Fig.15 , the first moving iron core 140 will rotate a certain angle relative to the second moving iron core 150, thereby driving the moving contact 120 to rotate synchronously via the rotating shaft 170, so that the moving contact 120 rotates from below the first sub-contact 111 to below the second sub-contact 112. Then, while keeping the first coil 222 energized, the second coil 221 is energized. At this time, Fig.16 As shown, under the action of the magnetic field, the first moving iron core 140 moves toward the static attraction portion 180, thereby causing the moving contact 120 below the second sub-contact 112 to move linearly along the central axis 172 so as to reliably contact the second sub-contact 112, thereby controlling the second conductive loop to be connected. Afterwards, the first coil 222 can be de-energized, while the second coil 221 continues to be energized. Since the first moving iron core 140 and the static attraction portion 180 are attracted or substantially attracted, the moving contact 120 can still maintain contact with the second sub-contact 112, that is, the second conductive loop is still connected.

[0062] When the second conductive loop needs to be disconnected, the first coil 222 and the second coil 221 can be de-energized. Thus, under the action of the first elastic member and the second elastic member in the subsequent example, the first moving iron core 140 and the moving contact 120 can return to the original position again. Figure 2 Initial position shown.

[0063] When it is necessary to connect the first conductive circuit to which the first sub-contact 111 is connected, Figure 2 On the basis of, the first coil 222 can be kept de-energized, and the second coil 221 can be energized. At this time, Fig.17 As shown, the first moving iron core 140 drives the moving contact 120 to move along the direction of the central axis 172, thereby contacting the first sub-contact 111 above the moving contact 120, and controlling the first conductive circuit to be connected.

[0064] When the first conductive loop needs to be disconnected, the first coil 222 can be kept de-energized, and the second coil 221 can also be de-energized. Therefore, under the action of the second elastic member in the subsequent example, the first moving iron core 140 and the moving contact 120 can return to the original position again. Figure 2 Initial position shown.

[0065] When switching and cooperating with multiple static contacts through the same moving contact, in order to improve the reliability and accuracy of the on-off control of the conductive circuit, the contact device also includes a static attraction part, which is located at the end of the second moving iron core away from the first moving iron core. The second moving iron core and the rotating shaft can form a driving cooperation relationship toward the static attraction part (that is, the axis of the first coil). Of course, the rotating shaft can still rotate relative to the second moving iron core. Specifically, since the second moving iron core is closer to the static attraction part than the first moving iron core, the rotating shaft can first rotate and pass through the second moving iron core, and the rotating shaft and the second moving iron core form a linear driving cooperation relationship in the direction of the center axis, and then the rotating shaft is fixedly connected to the first moving iron core so that the rotating shaft can be driven to rotate while the first moving iron core rotates. At the same time, a second coil is also sleeved on the outer periphery of the moving iron core assembly, and the second coil and the first coil are arranged linearly along the axial direction of the first coil. The first coil can be correspondingly sleeved on the outer periphery of the first moving iron core, and the second coil can be correspondingly sleeved on the outer periphery of the second moving iron core, that is, the second coil is closer to the static attraction part than the first coil. At the same time, the gap between the first moving iron core and the second moving iron core can be located inside the first coil, so that when the second moving iron core is restricted from rotating and the first coil is energized, the first moving iron core can rotate relative to the second moving iron core. In addition, the gap between the second moving iron core and the static attraction part can be located inside the second coil, so that when the second coil is energized, the second moving iron core can be prompted to move toward the static attraction part.

[0066] Therefore, when the moving contact needs to rotate to switch the corresponding static contact, the first coil can be energized. Since the second moving iron core is restricted from rotating and the rotating shaft is rotatably arranged through the second moving iron core, the first moving iron core can drive the moving contact to rotate via the rotating shaft when it rotates. When the moving contact needs to contact the corresponding static contact, the second coil can be energized. Since the rotating shaft and the second moving iron core form a linear driving cooperation relationship in the direction of the central axis, and the rotation and the first moving iron core are fixedly connected, the second moving iron core will move toward the static attraction part, and in this process, the first moving iron core will also be driven by the rotating shaft to move toward the static attraction part, so that the moving contact contacts the corresponding static contact. During the control process, the power-on and power-off states of the first coil and the second coil can still be controlled to coordinate the rotation, direct motion, and rotation plus direct motion of the moving contact. The specific settings can be made with reference to the above examples.

[0067] Optional, such as Figure 2 , Fig.12 , Figures 15 to 17 As shown, the end of the rotating shaft 170 away from the moving contact 120 is first fixed to the first moving iron core 140 and then penetrated into the first moving iron core 140, and then rotatably connected with the second moving iron core 150. Specifically, the end of the rotating shaft 170 away from the moving contact 120 is penetrated into the first moving iron core 140 and then rotatably penetrated into the second moving iron core 150, and a tray 171 is provided at the end thereof, so that when the second coil 221 is energized, the first moving iron core 140 can also drive the second moving iron core 150 to move toward the static attraction portion 180 through the rotating shaft 170 and the tray 171. Of course, in other examples, the tray may not be provided, and the present application does not make any specific restrictions thereon.

[0068] Optional, such as Fig.13 As shown, the contact device further includes a sleeve 190 which is sleeved on the outer periphery of the moving iron core assembly 130 and has an opening at one end, so as to provide guidance for the sliding of the moving iron core assembly 130. Fig.18 As shown, the first coil 222 and the second coil 221 are both sleeved on the outer periphery of the sleeve 190, and the static attraction portion 180 is located at one end of the sleeve 190. In particular, when the static attraction portion 180 includes a yoke plate 182, the yoke plate 182 can close the opening at the end of the sleeve 190, thereby sealing the interior of the sleeve 190 so that flame-retardant gas can be filled in the sleeve 190. In order to improve the sealing effect of the yoke plate 182, an outward folded edge 192 can be formed at the periphery of the opening of the sleeve 190, so that the sleeve 190 can be fitted with the yoke plate 182 through the outward folded edge 192, thereby increasing the fitting area and improving the sealing effect.

[0069] The first moving iron core 140 is rotatably matched with the sleeve 190, that is, the first moving iron core 140 can slide relative to the sleeve 190 along the central axis 172, and can also rotate relative to the sleeve 190 when needed. In order to achieve the rotation limit of the second moving iron core 150, a limit portion can be provided on the sleeve 190, and the limit portion is used to limit the rotation of the second moving iron core 150 relative to the sleeve 190. For details, please refer to Fig.12 and Fig.13 A first cut surface 152 is provided on the second moving iron core 150, and a second cut surface matching the first cut surface 152 is also provided on the sleeve 190. The second cut surface can be used as a limiting portion, so that when the second moving iron core 150 is assembled to the sleeve 190, the first cut surface 152 and the second cut surface can be fitted together, thereby limiting the rotation of the second moving iron core 150 relative to the sleeve 190.

[0070] Optional, such as Figure 2 As shown, the static attraction portion 180 is shown to be a static iron core 181. Fig.12 , Figures 15 to 17As shown, the static attraction portion 180 includes a yoke plate 182 and a static iron core 181. Of course, in other examples, the static attraction portion 180 can also be a yoke plate 182.

[0071] Optionally, in order to smoothly reset the first moving iron core 140 after it rotates, a first elastic member matched with the first moving iron core 140 may be provided, so that when the first coil 222 is energized, the first elastic member is deformed during the process of driving the first moving iron core 140 to rotate, thereby providing a rotational reset force to the first moving iron core 140. When both the first coil 222 and the second coil 221 lose power, the rotational reset force provided by the first elastic member can be used to return the first moving iron core 140 to its initial position.

[0072] Optionally, in order to achieve smooth opening of the moving contact 120 and the static contact 110, the moving contact assembly further includes a second elastic member that cooperates with the moving iron core assembly 130, whereby when the second coil 221 is energized, the second elastic member is deformed in the process of driving the moving iron core assembly 130 toward the static attraction portion 180, thereby providing the moving iron core assembly 130 with an opening reset force away from the static attraction portion 180. So that when both the first coil 222 and the second coil 221 lose power, the opening reset force provided by the second elastic member can reliably open the moving contact 120 and the static contact 110.

[0073] Optional, such as Fig.18 As shown, the contact device further includes a first yoke assembly 212 and a second yoke assembly 211, wherein the first yoke assembly 212 is used to cooperate with the first coil 222 to form a first magnetic circuit, and the second yoke assembly 211 is used to cooperate with the second coil 221 to form a second magnetic circuit. Fig.18 As shown, the first yoke assembly 212 is a first U-shaped yoke, and the second yoke assembly 211 is a second U-shaped yoke. The openings of the first U-shaped yoke and the second U-shaped yoke are in the same direction and are stacked. The yoke plate 182 of the static attraction portion 180 covers the opening of the second U-shaped yoke. The first coil 222 is located in the first U-shaped yoke, and the second coil 221 is located in the second U-shaped yoke, thereby forming a first magnetic circuit and a second magnetic circuit, respectively.

[0074] In another aspect of the embodiment of the present application, a control switch 10 is provided. Fig.19 As shown, the housing 230 and any one of the contact devices described above can be provided in the housing 230 .

[0075] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A contact device, characterized in that: The invention comprises a plurality of stationary contacts (110) and a moving contact (120) assembly used for switching and cooperating with the plurality of stationary contacts (110) to form different conductive circuits, wherein the moving contact (120) assembly comprises a moving contact (120), a moving iron core assembly (130) and a first coil (222) sleeved on the outer periphery of the moving iron core assembly (130); The moving iron core assembly (130) comprises a first moving iron core (140) and a second moving iron core (150) which are arranged axially along the first coil (222) and have a gap (160); the first moving iron core (140) is connected to the moving contact (120) via a rotating shaft (170); the first moving iron core (140) and the second moving iron core (150) respectively have a first matching portion (141) and a second matching portion (151) which match each other at opposite ends; the first matching portion (141) and the second matching portion (151) respectively extend spirally around the rotating shaft (170); When the first coil (222) is energized, the second moving iron core (150) is restricted from rotating, and the first moving iron core (140) is forced to rotate relative to the second moving iron core (150), so that the first matching portion (141) and the second matching portion (151) are close to each other, and the moving contact (120) is driven to switch and match with the multiple stationary contacts (110) via the rotating shaft (170).

2. The contact device according to claim 1, characterized in that The contact device further comprises a static attraction portion (180), the static attraction portion (180) being located at an end of the first moving iron core (140) away from the second moving iron core (150), and a second coil (221) being sleeved on the outer periphery of the moving iron core assembly (130) and arranged axially with the first coil (222) along the first coil (222); When the second coil (221) is energized, at least the first moving iron core (140) is driven to move toward the static attraction portion (180), so as to drive the moving contact (120) to contact and close with the corresponding matching static contact (110).

3. The contact device according to claim 1, characterized in that The contact device further comprises a static attraction portion (180), the static attraction portion (180) being located at an end of the second moving iron core (150) away from the first moving iron core (140), the second moving iron core (150) and the rotating shaft (170) being driven in axial direction along the first coil (222), and a second coil (221) being arranged axially with the first coil (222) and along the first coil (222) is also sleeved on the outer periphery of the moving iron core assembly (130); When the second coil (221) is energized, the second moving iron core (150) drives the first moving iron core (140) to move toward the static attraction portion (180) via the rotating shaft (170), and drives the moving contact (120) to contact and close the corresponding static contact (110).

4. The contact device according to claim 1, characterized in that A spacer (240) is also provided in the gap between the first moving iron core (140) and the second moving iron core (150), and the opposite ends of the spacer (240) are respectively abutted against the ends of the first moving iron core (140) and the second moving iron core (150), and the spacer (240) is used to define the gap between the first moving iron core (140) and the second moving iron core (150).

5. The contact device according to any one of claims 1 to 4, characterized in that The first matching portion (141) and the second matching portion (151) respectively have opposite first surfaces, and the first surfaces are spiral surfaces or step surfaces.

6. The contact device according to any one of claims 1 to 4, characterized in that The first matching portion (141) and the second matching portion (151) respectively have opposite first surfaces, and the first surface (1411) of the first matching portion and the first surface (1511) of the second matching portion have parallel sections (201) that are parallel to each other.

7. The contact device according to claim 6, characterized in that The center angle corresponding to the orthographic projection of the parallel section (201) on the radial cross section (202) of the first coil is greater than or equal to 90° and less than or equal to 270°.

8. The contact device according to claim 2, characterized in that One end of the rotating shaft (170) facing away from the moving contact (120) is fixedly inserted into the first moving iron core (140) and is rotatably connected to the second moving iron core (150). When the second coil (221) is energized, the first moving iron core (140) is driven to drive the second moving iron core (150) to move toward the static attraction portion (180).

9. The contact device according to claim 2 or 3, characterized in that: The contact device also includes a sleeve (190) located between the first coil (222) and the moving iron core assembly (130), the static attraction portion (180) is located at one end of the sleeve (190), the first moving iron core (140) and the second moving iron core (150) are slidably arranged on the sleeve (190), and the first moving iron core (140) is rotatably matched with the sleeve (190), and a limiting portion is arranged on the sleeve (190), and the limiting portion is used to limit the rotation of the second moving iron core (150) relative to the sleeve (190).

10. The contact device according to claim 2, 3 or 8, characterized in that The static attraction part (180) is a yoke plate (182) and / or a static iron core (181).

11. The contact device according to claim 1, characterized in that The movable contact (120) assembly further comprises a first elastic member cooperating with the first movable iron core (140), wherein the first elastic member is used to provide a rotational restoring force to the first movable iron core (140).

12. The contact device according to claim 2 or 3, characterized in that The moving contact (120) assembly further comprises a second elastic member cooperating with the moving iron core assembly (130), the second elastic member being used to provide the moving iron core assembly (130) with a switch-off resetting force away from the static attraction portion (180).

13. The contact device according to claim 2 or 3, characterized in that The contact device further comprises a first magnetic yoke component (212) and a second magnetic yoke component (211), wherein the first magnetic yoke component (212) is used to cooperate with the first coil (222) to form a first magnetic circuit, and the second magnetic yoke component (211) is used to cooperate with the second coil (221) to form a second magnetic circuit.

14. A control switch, characterized in that: Comprising a contact device as claimed in any one of claims 1 to 13.

Images