Self-locking structure and relay

Abstract

The application provides a self-locking structure and a relay, and relates to the technical field of relays. A pushing piece is movably connected with a moving spring assembly. A transmission piece is provided with a rotating shaft center part. The transmission piece rotates around the rotating shaft center part. The transmission piece is movably connected with the pushing piece. The pushing piece and the moving spring assembly have a first action position. The transmission piece and the pushing piece have a second action position. The line between the first action position, the second action position and the rotating shaft center part tends to be a straight line or is a straight line when the contact is closed. When the moving and static contacts are closed, the transmission piece pushes against the pushing piece to form a dead point structure state. The dead point structure state cannot be separated without external driving force, the function of self-locking is realized, the closed state of the moving and static contacts is maintained, the low-cost and high-stability self-locking control of the action end position is realized, the structural stability is ensured to avoid false release, the problems of insufficient reliability in structural design are solved, and the short-circuit resistance effect can be effectively realized through the self-locking structure.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to self-locking structures and relays. Background Technology

[0002] The actuator in a relay often needs to perform "push-pull" actions. However, if there is no suitable retaining structure to hold the actuator in place after it has performed such an action, the actuator may be prone to accidental release due to reaction forces, vibrations, or unstable power supply.

[0003] Currently, the holding structure can maintain the state of the actuator by using springs or magnets, or by using an electronically controlled locking mechanism, or by using a spring-loaded buffer based on a specific material.

[0004] However, the methods currently used have technical problems such as reliance on high-precision components, high manufacturing costs, sensitivity to the usage environment, and insufficient reliability. Utility Model Content

[0005] Therefore, it is necessary to provide a self-locking structure and a relay to address the aforementioned technical problems.

[0006] This application provides a self-locking structure, the self-locking structure comprising:

[0007] Moving spring assembly;

[0008] A pusher, which is movably connected to the movable spring assembly;

[0009] A transmission component, wherein the transmission component is provided with a rotating shaft, the transmission component rotates on a fixed axis based on the rotating shaft, and the transmission component is movably connected to the pushing component;

[0010] The pusher and the moving spring assembly have a first operating position, and the transmission member and the pusher have a second operating position. The line connecting the first operating position, the second operating position, and the rotating shaft center can tend to be straight or be straight when the contact point is closed.

[0011] In one embodiment, the moving spring assembly is provided with a power receiving portion, and the pushing member is provided with a power output portion. The pushing member engages with the power receiving portion of the moving spring assembly via the power output portion, and the power output portion and the power receiving portion have the first operating position; and / or,

[0012] The transmission component is provided with a transmission output section, the pushing component is provided with a limiting track, and the transmission output section is slidably assembled along the limiting track; and / or

[0013] The transmission component is provided with a transmission input section, which is configured to receive the driving force from the driving source.

[0014] In one embodiment, when the contacts are closed or open, the power output unit and the power receiving unit each have two different first operating positions.

[0015] In one embodiment, the power output section is configured to be formed in the clearance groove of the pusher, and the power receiving section includes a main receiving section and limiting bending sections located at both ends of the main receiving section. The main receiving section of the power receiving section passes through the clearance groove, and the two limiting bending sections are configured to limit and cooperate with the pusher.

[0016] In one embodiment, the power receiving unit further includes:

[0017] A compression spring is provided, wherein the fixed end of the compression spring is connected to the lower end of the moving spring assembly, the movable end of the compression spring passes through the relief groove, and the compression spring is provided with a stress relief part.

[0018] In one embodiment, a first protrusion is provided within the clearance groove, and the main receiving section of the power receiving unit abuts against the first protrusion; when the contact is broken, the working position between the main receiving section and the first protrusion is one of the first working positions; and / or,

[0019] The relief groove is provided with a second protrusion, and the compression spring abuts against the second protrusion; when the contact is closed, the working position between the compression spring and the second protrusion is one of the first working positions.

[0020] In one embodiment, the drive source includes a drive gear, and the transmission input is configured as a sector drive tooth, the drive gear engaging with the sector drive tooth.

[0021] In one embodiment, the limiting track is configured to be an elongated hole in the pusher, and the transmission output is configured to be a sliding cam in the transmission member, the sliding cam being slidably fitted into the elongated hole.

[0022] In one embodiment, the sliding convex shaft and the elongated hole are in contact through two working positions, one of which is configured as the second working position.

[0023] This application provides a relay that includes the self-locking structure.

[0024] In the aforementioned self-locking structure and relay, when the line connecting the first operating position, the second operating position, and the rotating shaft center can approach or completely form a straight line, the moving contact will stably contact the stationary contact. The moving and stationary contacts are in a closed state, and the transmission component can also hold the pushing component in place, forming a dead-point structure. Without external driving force, it cannot disengage from this dead-point structure, thus achieving the self-locking function. This effectively maintains the closed state of the moving and stationary contacts, achieving low-cost and highly stable self-locking control at the end position of the action, ensuring structural stability and preventing accidental release, and solving technical problems such as insufficient reliability in structural design. Furthermore, this self-locking structure effectively achieves short-circuit protection. Attached Figure Description

[0025] Figure 1 This is a front view of the self-locking structure provided in one embodiment of this application when the contact is closed.

[0026] Figure 2 For example Figure 1 A partially enlarged schematic diagram of the self-locking structure shown.

[0027] Figure 3 For example Figure 1 The rear view of the self-locking structure when the contacts are closed.

[0028] Figure 4 For example Figure 1 The side view of the self-locking structure when the contacts are closed.

[0029] Figure 5 For example Figure 1 A three-dimensional diagram of the self-locking structure when the contacts are closed.

[0030] Figure 6 This is a front view of the self-locking structure provided in one embodiment of this application when the contact is disconnected.

[0031] Figure 7 For example Figure 6 The rear view of the self-locking structure when the contacts are open.

[0032] Figure 8 For example Figure 6 The side view of the self-locking structure when the contacts are open.

[0033] Figure 9 For example Figure 6 A three-dimensional view of the self-locking structure when the contacts are disconnected.

[0034] Figure 10 This is a front view of the self-locking structure when the contacts are closed, provided in another embodiment of this application.

[0035] Figure 11 For example Figure 10 The side view of the self-locking structure when the contacts are open.

[0036] Icon labels:

[0037] 100. Moving contact; 200. Stationary contact;

[0038] 1000, Moving spring assembly; 2000, Pushing component; 3000, Transmission component; 4000, Drive source;

[0039] 1100, Power receiving unit; 1200, Moving spring lead-out end;

[0040] 1110. Main receiving section; 1120. Limiting bending section; 1130. Compression spring component;

[0041] 1131. Stress relief section;

[0042] 2100, Power Output Unit; 2200, Limit Rail;

[0043] 2110, First bract; 2120, Second bract;

[0044] 3100, Rotating shaft; 3200, Transmission output; 3300, Transmission input. Detailed Implementation

[0045] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0046] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0047] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0051] This application provides a relay that can achieve contact and separation between the moving contact 100 and the stationary contact 200 by performing a "push-pull" action. The relay provided by this application includes a self-locking structure that can maintain the moving state of the relay after the "push-pull" action is completed, thereby maintaining a relatively stable state between the moving contact 100 and the stationary contact 200. This purely mechanical holding mechanism does not rely on external structures such as electrical controls or elastic materials, resulting in structural stability and eliminating the need for additional material, processing, or control cost reduction.

[0052] See Figures 1 to 5 , Figures 1 to 5 The state shown is the structural state of the self-locking structure described above when the relay is in the contact closed state, which is the state in which the moving contact 100 and the stationary contact 200 are in contact with each other. Also, refer to... Figures 6 to 9 , Figures 6 to 9 The state shown is the structural state of the self-locking structure described above when the relay is in the contact open state, which is the state in which the moving contact 100 and the stationary contact 200 are separated from each other.

[0053] See also Figures 1 to 9 As shown, the self-locking structure may include a movable spring assembly 1000, a pusher 2000, and a transmission member 3000. The pusher 2000 is movably connected to the movable spring assembly 1000, allowing for changes in their relative positional relationship. Specifically, the movable connection between the pusher 2000 and the movable spring assembly 1000 allows them to have a first operating position. The transmission member 3000 is provided with a rotating shaft 3100, and the transmission member 3000 rotates around this fixed axis, thereby transmitting power (force) through this fixed-axis rotation. The transmission member 3000 is movably connected to the pusher 2000, allowing for changes in their relative positional relationship. Specifically, the movable connection between the transmission member 3000 and the pusher 2000 allows them to have a second operating position.

[0054] See Figure 1 The contact is closed as shown. At this time, the line connecting the first operating position, the second operating position, and the rotating shaft 3100 tends to be straight or is straight when the contact is closed. Since the transmission component 3000 rotates on a fixed axis based on the rotating shaft 3100, it controls the reciprocating motion of the push component 2000 by rotating on a fixed axis, transmitting power (force) and realizing motion control of the moving contact 100.

[0055] Therefore, as Figures 1 to 5As shown, when the line connecting the first operating position, the second operating position, and the rotating shaft 3100 tends to be straight or appears as a straight line, the moving contact 100 will stably contact the stationary contact 200, and the transmission component 3000 can also hold the pushing component 2000 in a dead-point structural state. This can also be understood as the force acting on the pushing component extending along the transmission component and passing through the rotating shaft 3100, resisting external disturbances. Furthermore, without external driving force, it cannot disengage from this dead-point structural state, thus achieving a self-locking function. When the line tends to be straight, the maximum permissible deviation angle can also be determined based on the friction angle. Within the range of the designed maximum permissible deviation angle, effective self-locking can be achieved, anti-interference can be realized, and the system can maintain a stable geometric shape (structure).

[0056] When the moving contact 100 and the stationary contact 200 are closed, the line connecting the first operating position, the second operating position, and the rotating shaft 3100 tends to be straight or appears as a straight line. The transmission component 3000 presses against the pusher component 2000, and is in a dead-point structure state. In the self-locking position, there is a stall limit, and it is impossible to disengage from this dead-point structure state. If you want to release the above dead-point structure state, the motor can rotate in the opposite direction. The self-locking can be released by reversing the rotation, so that the moving contact 100 and the stationary contact 200 can be separated.

[0057] When the moving contact 100 and the stationary contact 200 are closed, the aforementioned self-locking state is achieved. Even if a large current is applied to the relay at this time, because the transmission component 3000 is pressing against the push component 2000, it is in a dead-point structural state, thus resisting the electrodynamic repulsive force that separates the moving contact 100 and the stationary contact 200. This allows the relay to effectively achieve short-circuit protection. This self-locking process relies on purely mechanical holding without depending on external structures such as electrical components or elastic materials, resulting in structural stability. It also eliminates the need for high-precision components, reducing material, processing, and control costs. The product boasts high reliability.

[0058] The transmission component 3000, the pusher component 2000, and the moving spring assembly 1000 are in a state of force balance, thereby achieving self-locking among the transmission component 3000, the pusher component 2000, and the moving spring assembly 1000. Without continuing to transmit external power, the force balance among the transmission component 3000, the pusher component 200, and the moving spring assembly 1000 can effectively maintain the contact closure state of the moving contact 100 and the stationary contact 200.

[0059] Continue reading Figure 1 and Figure 2As shown, in one embodiment, the moving spring assembly 1000 is provided with a power receiving portion 1100, and the pushing member 2000 is provided with a power output portion 2100. In this case, the pushing member 2000 can engage with the power receiving portion 1100 of the moving spring assembly 1000 via the power output portion 2100, thereby achieving a movable connection between the moving spring assembly 1000 and the pushing member 2000. Specifically, when the power output portion 2100 and the power receiving portion 1100 are engaged, they will come into contact with each other, forming the aforementioned first operating position between them.

[0060] When the movable connection between the moving spring assembly 1000 and the pusher 2000 is achieved by the snap-fit ​​engagement, the snap-fit ​​will cause relative movement between the moving spring assembly 1000 and the pusher 2000. In one embodiment, when the relay is in the contact closed or contact open state, the power output part 2100 of the pusher 2000 and the power receiving part 1100 of the moving spring assembly 1000 may have two different first working positions due to the change of the snap-fit ​​state. That is, in different snap-fit ​​states, the power output part 2100 of the pusher 2000 and the power receiving part 1100 of the moving spring assembly 1000 will contact each other and engage in the snap-fit ​​engagement based on two different positions.

[0061] Continue reading Figure 2 As shown, in one embodiment, the power output section 2100 can be configured to have a clearance groove formed in the pusher 2000, and the power receiving section 1100 includes a main receiving section 1110 and limiting bending sections 1120 located at both ends of the main receiving section 1110. In this case, the main receiving section 1110 of the power receiving section 1100 can pass through the clearance groove, and the two limiting bending sections 1120 are positioned on both sides of the clearance groove and engage with the pusher 2000 to form a snap-fit ​​engagement with the clearance groove. Simultaneously, the power receiving section 1100 may also include a compression spring 1130, with the fixed end of the compression spring 1130 connected to the lower end of the moving spring assembly 1000, and the movable end of the compression spring 1130 passing through the clearance groove.

[0062] The power output section 2100 of the pusher 2000 and the power receiving section 1100 of the moving spring assembly 1000 can have two different first operating positions due to changes in the contact points. In one embodiment, a first protrusion 2110 is provided in the clearance groove, and the main receiving section 1110 of the power receiving section 1100 abuts against the first protrusion 2110. Therefore, when the relay is in the open contact state, the main receiving section 1110 can contact the first protrusion 2110, and the operating position between the main receiving section 1110 and the first protrusion 2110 is one of the first operating positions. At the same time, a second protrusion 2120 is provided in the clearance groove, and the compression spring 1130 abuts against the second protrusion 2120. Therefore, when the relay is in the closed contact state, the compression spring 1130 contacts the second protrusion 2120, and the operating position between the compression spring 1130 and the second protrusion 2120 is the other first operating position.

[0063] The compression spring 1130 may also be provided with a stress relief part 1131, which is mainly used to release the stress of the compression spring 1130. For example, the stress relief part 1131 adopts a bending structure set at an appropriate position of the compression spring 1130. The bending structure can be a bend of various shapes. Moreover, the stress relief part 1131 can be set at the position near the connection between the compression spring 1130 and the moving spring assembly 1000. It is mainly used to release the stress at the bend where the compression spring 1130 and the moving spring assembly 1000 are connected, thereby improving fatigue resistance and reliability.

[0064] The transmission component 3000 is provided with a transmission output part 3200, and the pusher component 2000 is provided with a limiting track 2200. In this configuration, the transmission output part 3200 is slidably assembled along the limiting track 2200, achieving a movable connection between the transmission component 3000 and the pusher component 2000 based on this sliding assembly. In one embodiment, the limiting track 2200 may be configured as an elongated hole in the pusher component 2000, and the transmission output part 3200 may be configured as a sliding convex shaft in the transmission component 3000. The sliding convex shaft is slidably assembled into the elongated hole, such as a slotted hole or a rectangular hole. In this case, the sliding engagement between the sliding convex shaft and the elongated hole prevents them from disengaging relative to each other, improving the stability of the movement.

[0065] The sliding cam shaft and the elongated hole are in contact through two abutment positions, one of which is configured as the second abutment position. (See also...) Figure 3 As shown, when the relay is in the closed contact state, the sliding cam pushes upward against the upper wall of the elongated hole. Therefore, the current second operating position is located where the top of the sliding cam contacts the upper wall of the elongated hole. Conversely, when the relay is in the open contact state, the second operating position is located where the bottom of the sliding cam contacts the lower wall of the elongated hole.

[0066] In addition, the movable connection between the transmission component 3000 and the push component 2000 can also be made by various methods such as hinge or shaft connection. Those skilled in the art can set it according to actual needs, and no limitation is made here.

[0067] Meanwhile, the transmission component 3000 is provided with a transmission input section 3300, which is configured to receive the driving force from the drive source 4000. The drive source 4000 can be of various types, as long as it ensures that the transmission component rotates about a fixed axis 3100 and reciprocates in the limiting track 2200. For example, in one embodiment, the drive source 4000 may include a drive gear, and the transmission input section 3300 is configured as a sector-shaped transmission gear. The drive gear meshes with the sector-shaped transmission gear, thereby driving the transmission based on the gear meshing. The drive gear can be driven by a motor or the like.

[0068] Therefore, as the self-locking state gradually forms, the sector-shaped transmission teeth can rotate to the limit angle, so that the force in the direction of the pusher 2000 can no longer be transmitted. At this time, the transmission component 3000 presses against the pusher 2000 and is in a dead point structure state, unable to get out of the dead point structure state, thus realizing the self-locking function.

[0069] Continue reading Figure 10 and Figure 11 As shown, the drive source 4000 may also not use a drive gear, but instead directly connect a motor to the transmission input unit 3300, using the rotation of the motor to directly control the rotation of the transmission component 3000. Those skilled in the art can choose a suitable method according to actual needs, and no limitation is made here.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A self-locking structure, characterized in that, The self-locking structure includes: Dynamic spring assembly (1000); A pusher (2000) is movably connected to the spring assembly (1000); A transmission component (3000) is provided with a rotating shaft center (3100), the transmission component (3000) rotates on a fixed axis based on the rotating shaft center (3100), and the transmission component (3000) is movably connected to the pusher (2000); The pusher (2000) and the moving spring assembly (1000) have a first working position, and the transmission member (3000) and the pusher (2000) have a second working position. The line connecting the first working position, the second working position and the rotating shaft center (3100) can tend to be straight or be straight when the contact is closed.

2. The self-locking structure according to claim 1, characterized in that, The moving spring assembly (1000) is provided with a power receiving part (1100), and the pushing member (2000) is provided with a power output part (2100). The pushing member (2000) engages with the power receiving part (1100) of the moving spring assembly (1000) through the power output part (2100). The power output part (2100) and the power receiving part (1100) have the first operating position between them; and / or, The transmission component (3000) is provided with a transmission output section (3200), the pusher component (2000) is provided with a limiting track (2200), and the transmission output section (3200) is slidably assembled along the limiting track (2200); and / or, The transmission component (3000) is provided with a transmission input section (3300), which is configured to receive the driving force of the drive source (4000).

3. The self-locking structure according to claim 2, characterized in that, When the contacts are closed or open, the power output unit (2100) and the power receiving unit (1100) each have two different first operating positions.

4. The self-locking structure according to claim 3, characterized in that, The power output section (2100) is configured to be formed in the clearance groove of the pusher (2000). The power receiving section (1100) includes a main receiving section (1110) and limiting bending sections (1120) located at both ends of the main receiving section (1110). The main receiving section (1110) of the power receiving section (1100) passes through the clearance groove, and the two limiting bending sections (1120) are configured to limit and cooperate with the pusher (2000).

5. The self-locking structure according to claim 4, characterized in that, The power receiving unit (1100) also includes: A compression spring (1130) is provided, the fixed end of which is connected to the lower end of the moving spring assembly (1000), the movable end of which passes through the relief groove, and the compression spring (1130) is provided with a stress relief part (1131).

6. The self-locking structure according to claim 5, characterized in that, A first protrusion (2110) is provided in the recessed area, and the main receiving section (1110) of the power receiving unit (1100) abuts against the first protrusion (2110); when the contact is broken, the working position between the main receiving section (1110) and the first protrusion (2110) is one of the first working positions; and / or, The recessed groove is provided with a second protrusion (2120), and the spring (1130) abuts against the second protrusion (2120); when the contact is closed, the working position between the spring (1130) and the second protrusion (2120) is one of the first working positions.

7. The self-locking structure according to claim 2, characterized in that, The drive source (4000) includes a drive gear, and the transmission input part (3300) is configured as a sector-shaped transmission tooth, wherein the drive gear engages with the sector-shaped transmission tooth.

8. The self-locking structure according to claim 2, characterized in that, The limiting track (2200) is configured to be an elongated hole in the pusher (2000), and the transmission output part (3200) is configured to be a sliding cam on the transmission member (3000), the sliding cam being slidably fitted into the elongated hole.

9. The self-locking structure according to claim 8, characterized in that, The sliding cam shaft and the elongated hole are in contact through two working positions, one of which is configured as the second working position.

10. A relay, characterized in that, The relay includes a self-locking structure as described in any one of claims 1-9.

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