Transmission mechanism of control and protection switch

Abstract

The utility model belongs to the technical field of control and protection switches, and particularly relates to a transmission mechanism of a control and protection switch. The device comprises a supporting frame, a coil switch, a transmission assembly and a release, a positioning platform is arranged on the supporting frame, at least two positioning pins are arranged on the positioning platform, and a positioning buckle is arranged on one side of the positioning platform; the coil switch is installed in the positioning platform in a matched mode. A positioning pin hole matched with the positioning pin is formed in the coil switch. The transmission assembly is installed in the supporting frame, and the output end of the transmission assembly is opposite to a contact of the coil switch. The release is installed in the supporting frame, and the output end of the release is arranged opposite to the input end of the transmission assembly and used for pushing the transmission assembly to act. The utility model is used for solving the problems of interference between a release and a circuit board and unstable installation of a coil switch in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of control and protection switches, and particularly relates to a transmission mechanism of a control and protection switch. Background Art

[0002] The control and protection switch is a new type of electrical product, integrating the main functions of traditional circuit breakers (fuses), contactors, overload (or overcurrent, open-phase) protection relays, starters, isolators, etc., and adopting a modular new type of electrical product. It is mainly used in power systems to connect, carry, and break circuits under normal conditions (including specified overload conditions), and can connect, carry, and break currents under specified abnormal conditions (such as short circuits), replacing the many functions of multiple electrical components in traditional control and protection circuits. During the normal operation of the switch, the transmission mechanism is an important part for all protection functions to execute the power cut-off function, and is the key core function of the control and protection switch.

[0003] Both ends of the transmission mechanism in the control and protection switch are respectively connected with a release and a coil switch. Through the push of the release, the transmission mechanism is driven to act, and then the contact point of the coil switch is touched, so that the coil switch is disconnected, and then the electromagnetic system is powered off to achieve the purpose of disconnecting the main circuit.

[0004] At present, the coil switch is arranged by suspending and connecting one mounting plate to one side of the frame of the transmission mechanism through two screws. The coil switch is installed on the mounting plate, and the release is also connected to the other side of the frame of the transmission mechanism by suspension. The coil switch and the release are connected by suspension. On the one hand, the stability is not good. Since both the release and the coil switch need to act and be stressed, after long-term operation, certain deviations will occur, resulting in failure. On the other hand, the release installed outside the transmission mechanism will affect the installation of the circuit board located above the release in the control and protection switch to a certain extent. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a transmission mechanism of a control and protection switch, which includes:

[0006] A support frame, on which a positioning platform is provided. At least two positioning pins are provided on the positioning platform, and a positioning buckle is provided on one side of the positioning platform;

[0007] A coil switch, which is matched and installed in the positioning platform, and a positioning pin hole matched with the positioning pin is provided in the coil switch;

[0008] A transmission component, which is installed in the support frame, and the output end of the transmission component is arranged opposite to the contact point of the coil switch;

[0009] The release is installed inside the support frame. The output end of the release is disposed opposite to the input end of the transmission assembly, and is used to push the transmission assembly to actuate.

[0010] Compared with the prior art, the above technical solution has the following beneficial effects:

[0011] By installing the release inside the support frame, the interference problem caused by the suspension installation of the release is avoided. The coil switch is limited in the positioning platform through the mutually matching positioning pins and positioning pin holes, and then the coil switch is fixed by using the positioning buckle, avoiding the problem of unstable connection of the coil switch caused by suspension and long-term pushing.

[0012] Based on the above technical solution, the embodiment of the present application can also be improved as follows:

[0013] In an embodiment, the support frame includes: an upper support plate, a lower support plate, and a rotating shaft member connecting the upper support plate and the lower support plate. The transmission assembly is rotatably connected between the upper support plate and the lower support plate.

[0014] In an embodiment, it further includes a top plate disposed at the bottom of the lower support plate. A guiding groove consistent with the length direction of the release is formed on the lower support plate. A first stop block and a second stop block are formed on the top plate, passing through the lower support plate and disposed opposite to the output end of the release and the input end of the transmission assembly respectively.

[0015] In an embodiment, the transmission assembly includes:

[0016] A rocker assembly is rotatably connected in the support frame, and the input end of the rocker assembly abuts against the second stop block;

[0017] An energy storage trigger assembly is rotatably connected in the support frame. The output end of the energy storage trigger assembly is spaced from the contact point of the coil switch, and the input end of the energy storage trigger assembly is limited and abuts against the output end of the rocker assembly.

[0018] In an embodiment, the positioning platform is lower than the upper support plate and is used to limit the side surface of the coil switch. The positioning platform is integrally formed and connected with the upper support plate. Description of the Drawings

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 This is the overall structural schematic diagram of the present utility model.

[0021] Figure 2 It is Figure 1 the structural schematic diagram from the upward view angle of

[0022] Figure 3 It is Figure 1 the connection schematic diagram between the second baffle and the small rocking frame in

[0023] Figure 4 This is the top-down structural schematic diagram of the present utility model with the upper support plate removed.

[0024] Reference numerals:

[0025] 1. Support frame; 101. Upper support plate; 102. Lower support plate; 103. Rotating shaft member;

[0026] 2. Positioning platform; 3. Positioning pin; 4. Positioning buckle;

[0027] 5. Coil switch; 6. Positioning pin hole;

[0028] 7. Transmission component; 701. Rocking frame component; 702. Energy storage and trigger component;

[0029] 7011. Small rocking frame; 7012. Large rocking frame;

[0030] 8. Release mechanism;

[0031] 9. Top plate; 10. First stop block; 11. Second stop block; Detailed implementation manners

[0032] Hereinafter, embodiments of the technical solutions of the present utility model will be described in detail with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model, and thus are only examples and should not be used to limit the protection scope of the present utility model.

[0033] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which the present utility model belongs.

[0034] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0035] In addition, terms such as "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present utility model, the meaning of "a plurality of" is more than two, unless otherwise specifically defined.

[0036] In this application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] As Figures 1-4 shown, a transmission mechanism of a control and protection switch provided by the present utility model includes: a support frame, a coil switch, a transmission component, and a release.

[0038] The support frame specifically includes: an upper support plate, a lower support plate, and a rotating shaft member connecting the upper support plate and the lower support plate. The upper support plate and the lower support plate are arranged in parallel, and the transmission component is rotatably connected between the upper support plate and the lower support plate.

[0039] A positioning platform is arranged on the support frame. The positioning platform is specifically located on the upper support plate. At least two positioning pins are arranged on the positioning platform. A positioning buckle is arranged on one side of the positioning platform. The coil switch is fitted and installed in the positioning platform. A positioning pin hole matching the positioning pin is opened in the coil switch. The position of the coil switch is restricted by the matching positioning pin hole and positioning pin, and the coil switch is fixed in the positioning platform through the positioning buckle, avoiding the instability of the suspension connection by screws.

[0040] The output end of the transmission component is arranged opposite to the contact of the coil switch. The release is installed inside the support frame. The output end of the release is arranged opposite to the input end of the transmission component, and is used to push the transmission component to act, and then push the contact of the coil switch. The release can act by receiving an abnormal signal. When an abnormal signal is received, the coil switch acts to close, and then the coil is closed to disconnect the main circuit.

[0041] By installing the release inside the support frame, the interference problem caused by the suspension installation of the release is avoided. The coil switch is limited in the positioning platform by the mutually matching positioning pin and positioning pin hole, and then the coil switch is fixed by using the positioning buckle, avoiding the problem of unstable suspension connection of the coil switch under long-term pushing.

[0042] In one embodiment, it further includes a top plate disposed in contact with the bottom of the lower support plate. A guiding groove is formed on the lower support plate and is consistent with the length direction of the release mechanism. On the top plate, a first stopper and a second stopper are formed which pass through the lower support plate and are oppositely disposed with the output end of the release mechanism and the input end of the transmission assembly respectively. Through the arrangement of the top plate, the release mechanism and the transmission assembly are smoothly connected. Since the release mechanism is moved from the external position of the support frame to the internal position of the support frame, the release mechanism is not opposite to the input end of the transmission assembly. Through the top plate attached to the bottom of the support frame, the thrust of the release mechanism is smoothly transmitted to the input end of the transmission assembly, which not only ensures the smooth transmission of force between the release mechanism and the transmission assembly, but also places the release mechanism in a more appropriate position.

[0043] Wherein, the transmission assembly includes: a rocker assembly and an energy storage triggering assembly.

[0044] The rocker assembly is rotatably connected in the support frame. The input end of the rocker assembly abuts against the second stopper. The energy storage triggering assembly is rotatably connected in the support frame. The output end of the energy storage triggering assembly is spaced from the contact point of the coil switch. The input end of the energy storage triggering assembly is in limiting abutment with the output end of the rocker assembly. When the rocker assembly is pushed by the release mechanism to rotate, the output end of the rocker assembly is separated from the input end of the energy storage triggering assembly. After the input end of the energy storage triggering assembly loses the restriction, it releases potential energy and rotates, and the second end thereof which is spaced from the contact point of the coil switch contacts the contact point, so that the state of the coil switch is switched.

[0045] As Figure 3 、 4 shown, wherein, the rocker assembly includes a small rocker and a large rocker. Both the small rocker and the large rocker are rotatably connected between the upper support plate and the lower support plate. Both the small rocker and the large rocker are rotatably connected between the upper support plate and the lower support plate through a central shaft. A small rocker arm extends from the bottom end of the small rocker to form an input end which abuts against the second stopper. The large rocker is circumferentially clamped with the small rocker. When the small rocker is pushed by the second stopper and rotates counterclockwise, the circumferential clamping between the small rocker and the large rocker fails, and the large rocker rotates counterclockwise, so that the output end in the circumferential direction of the large rocker is separated from the input end of the energy storage triggering assembly. After the energy storage triggering assembly loses the restriction of the large rocker, it rotates counterclockwise and then contacts the contact point of the coil switch.

[0046] The overall structure of the above transmission assembly can be replaced by other transmission mechanisms, as long as it can specifically achieve touching the contact point of the coil switch under the push of the second baffle.

[0047] The positioning platform is specifically arranged on the upper support plate at the top of the support frame. The upper surface of the positioning platform is lower than the upper surface of the upper support plate, so that a height difference is formed between the positioning platform and the upper support plate. Furthermore, the side wall of the upper support plate can be used to limit the coil switch, for limiting the side surface of the coil switch. Combined with the positioning limit of the positioning pin, the limitation of the coil switch by the positioning platform is ensured. The positioning platform is integrally formed and connected with the upper support plate. The positioning platform is arranged at a corner of the upper support plate, so that two side walls of the upper support plate form restrictions on the positioning platform. Since it is integrally formed, the structural strength of the positioning platform and the upper support plate is ensured.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transmission mechanism of a control and protection switch, characterized in that, Comprising: A support frame, on which a positioning platform is provided, at least two positioning pins are arranged on the positioning platform, and a positioning buckle is arranged on one side of the positioning platform; A coil switch, which is fitted and installed in the positioning platform, and a positioning pin hole matching the positioning pin is arranged in the coil switch; A transmission component, which is installed in the support frame, and the output end of the transmission component is arranged opposite to the contact of the coil switch; A release, which is installed inside the support frame, and the output end of the release is arranged opposite to the input end of the transmission component, and is used to push the transmission component to act.

2. The transmission mechanism according to claim 1, characterized in that, The support frame includes: an upper support plate, a lower support plate and a rotating shaft member connecting the upper support plate and the lower support plate, and the transmission component is rotatably connected between the upper support plate and the lower support plate.

3. The transmission mechanism according to claim 2, characterized in that, It further includes a top plate disposed at the bottom of the lower support plate in a fitting manner. A guiding groove consistent with the length direction of the release is formed on the lower support plate, and a first stopper and a second stopper are formed on the top plate and pass through the lower support plate and are respectively arranged opposite to the output end of the release and the input end of the transmission component.

4. The transmission mechanism according to claim 3, characterized in that, The transmission component includes: A rocker assembly, which is rotatably connected in the support frame, and the input end of the rocker assembly abuts against the second stopper; An energy storage trigger assembly, which is rotatably connected in the support frame, the output end of the energy storage trigger assembly is arranged at an interval from the contact of the coil switch, and the input end of the energy storage trigger assembly is in limiting abutment with the output end of the rocker assembly.

5. The transmission mechanism according to claim 2, characterized in that, The positioning platform is lower than the upper support plate and is used to limit the side surface of the coil switch, and the positioning platform is integrally formed and connected with the upper support plate.

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