Tripping device

Abstract

The invention provides a lock catch device. The lock catch device comprises a lock catch mechanism. The lock catch mechanism comprises an initial position and a lock catch position, in the lock catch position, the lock catch mechanism locks the lock catch matching part in the energy storage position, and in the initial position, the lock catch mechanism releases locking of the lock catch matching part to allow the lock catch matching part to move to the energy release position. The latch mechanism includes: an energy storage lever rotatably connected to the housing about an energy storage rotation axis; a latch lever rotatably connected to the housing about a latch rotation axis parallel to the energy storage rotation axis; the tripping component is installed on the shell so as to rotate between an avoiding position and a stopping position around a tripping rotation axis parallel to the energy storage rotation axis. When the lock catch matching part moves from the energy release position to the energy storage position, the lock catch matching part can cross the first end, close to the lock catch matching part, of the energy storage lever, so that the lock catch mechanism moves from the initial position to the lock catch position. The tripping device is simple in structure, reliable in operation and small in occupied space.

Description

Technical Field

[0001] The present disclosure relates to a tripping device. Background Art

[0002] Devices such as integrated switches or circuit breakers for opening and closing involve tripping operations. When the device is switched to the closed state, an energy storage mechanism stores energy such as elastic potential energy. When the circuit is operating normally, the tripping device in the device locks the energy storage mechanism and maintains it in the energy storage state. When a circuit fault is detected, the tripping device releases the lock on the energy storage mechanism. The energy storage mechanism uses the stored energy to drive the device to switch to the open state to ensure the safety of personnel and equipment. Summary of the Invention

[0003] At least some embodiments of the present disclosure provide a tripping device with a simple structure, reliable operation, and small occupied volume.

[0004] At least some embodiments of the present disclosure provide a latching device, including: a housing and a latching mechanism. The latching mechanism includes an initial position and a latching position. In the latching position, the latching mechanism locks the latching mating part in the energy storage position. In the initial position, the latching mechanism releases the lock on the latching mating part to allow the latching mating part to move to the energy release position. In addition, the latching mechanism includes: a storage lever rotatably connected to the housing about a storage rotation axis; a latching lever rotatably connected to the housing about a latching rotation axis parallel to the storage rotation axis; and a tripping member mounted to the housing to rotate between an avoidance position and a stop position about a tripping rotation axis parallel to the storage rotation axis. When the latching mating part moves from the energy release position to the energy storage position, the latching mating part can overcome and push the storage lever to rotate in a first rotation direction and cross the first end of the storage lever close to the latching mating part, so that the latching mechanism moves from the initial position to the latching position. When the latching mechanism is in the latching position, the storage lever stops the movement of the latching mating part from the energy storage position towards the energy release position, the tripping member is in the stop position, and stops the latching lever from rotating in a second rotation direction opposite to the first rotation direction, and the latching lever stops the storage lever from rotating in the first rotation direction. The tripping member can be triggered to rotate to the avoidance position to release the stop on the latching lever, so that the latching mechanism moves from the energy storage position to the initial position.

[0005] For example, in some embodiments, the latching mechanism further includes: a storage biasing member that biases the storage lever towards the second rotation direction; and a latching biasing member that biases the latching lever towards the first rotation direction.

[0006] For example, in some embodiments, the housing includes a first stop portion. In the initial position, the latch lever is stopped by the first stop portion to overcome the biasing force of the latch biasing member, and the latch lever stops the energy storage lever to overcome the biasing force of the energy storage biasing member.

[0007] For example, in some embodiments, the energy storage lever includes a first energy storage lever arm extending from an energy storage rotation axis. The free end of the first energy storage lever arm is the first end, and the first energy storage lever arm has a first energy storage lever surface and a second energy storage lever surface. When the latch engaging portion moves from the energy release position to the energy storage position, the latch engaging portion abuts against the first energy storage lever surface of the energy storage lever to push the energy storage lever. When the latch mechanism is in the latched position, the latch engaging portion abuts against the second energy storage lever surface of the energy storage lever to apply a force to the energy storage lever to rotate the energy storage lever in a first rotational direction.

[0008] For example, in some embodiments, the first energy storage lever surface and the second energy storage lever surface meet at an angle to each other. When the latch engaging portion passes over the first end of the energy storage lever, the latch engaging portion switches from abutting against the first energy storage lever surface to abutting against the second energy storage lever surface.

[0009] For example, in some embodiments, the latch mechanism further includes a first intermediate position during the process from the initial position to the latched position, and a second intermediate position during the process from the latched position to the initial position. At the first intermediate position and the second intermediate position, the first end of the energy storage lever leaves the movement path of the mating latch portion between the energy storage position and the energy release position to allow the latch engaging portion to pass over the first end of the energy storage lever. The release member includes a release stop portion and an avoidance notch in the release stop portion. In the latched position, the latch lever is stopped by the release stop portion of the release member. At the first intermediate position and the second intermediate position, when the release member moves to the avoidance position, the latch lever rotates in a second rotational direction to pass through the avoidance notch.

[0010] For example, in some embodiments, the latch lever includes a latch lever arm that extends in the longitudinal direction. The latch rotation axis is provided at one end in the longitudinal direction of the latch lever arm. The latch lever further includes a first protrusion that extends in the lateral direction towards the energy storage lever at the other end in the longitudinal direction of the latch lever arm, and a second protrusion that extends in the lateral direction towards the energy storage lever at an intermediate position in the longitudinal direction of the latch lever arm. The latch lever further includes a first latch lever surface, a second latch lever surface, and a third latch lever surface. The first latch lever surface is provided on one side of the second protrusion in the first rotation direction. In the initial position, the first stop portion abuts against the first latch lever surface to stop the latch lever. The second latch lever surface is provided on one side of the second protrusion in the second rotation direction. In the initial position, the latch lever stops the energy storage lever via the second latch lever surface. The third latch lever surface is provided at the end of the first protrusion. In the latched position, the unlatching stop portion of the unlatching member abuts against the third latch lever surface to stop the latch lever.

[0011] For example, in some embodiments, when the latch mechanism moves from the initial position to the first intermediate position, the latch mating portion pushes the energy storage lever to rotate in the first rotation direction via the second energy storage lever surface and pushes the latch lever to rotate in the second rotation direction via the energy storage lever. When the latch mechanism moves from the latched position to the second intermediate position, the latch mating portion pushes the energy storage lever to rotate in the first rotation direction via the first energy storage lever surface and pushes the latch lever to rotate in the second rotation direction via the energy storage lever.

[0012] For example, in some embodiments, the latch lever further includes a third protrusion that extends in the lateral direction towards the energy storage lever at one end of the latch lever arm. The energy storage lever includes a second energy storage lever arm that extends from the energy storage rotation axis towards the latch lever. The second energy storage lever arm has a third energy storage lever surface on one side in the second rotation direction and a fourth energy storage lever surface on one side in the first rotation direction. When the latch mechanism moves from the initial position to the first intermediate position and when the latch mechanism moves from the latched position to the second intermediate position, the fourth energy storage lever surface of the second energy storage lever arm abuts against the third protrusion.

[0013] For example, in some embodiments, the housing includes a second stop portion. When the latch mechanism is in the first intermediate position and the second intermediate position, the second stop portion is configured to stop the rotation of the energy storage lever in the first rotation direction via the second energy storage lever arm of the energy storage lever.

[0014] For example, in some embodiments, the lock mechanism further includes a toggle assembly, a mating toggle piece fixed to the release member, and a mating toggle biasing member biasing the mating toggle piece in the first rotational direction. The toggle assembly includes a first toggle lever rotatably mounted to the housing around a first toggle lever axis, a first toggle biasing member biasing the first toggle lever in the second rotational direction, and a toggle portion, wherein the first toggle lever axis is parallel to the energy storage rotation axis. When the lock mechanism moves from the initial position to the first intermediate position, the lock mating portion pushes the first toggle lever to rotate in the first rotational direction so that the toggle portion passes over the mating toggle portion of the mating toggle piece, and pushes the mating toggle portion of the mating toggle piece, so that the release member is rotated from the stop position to the avoidance position in the first rotational direction. When the lock mechanism is in the lock position, the lock mating portion abuts against the first toggle lever to keep the toggle portion in the position of passing over the mating toggle portion.

[0015] For example, in some embodiments, when the locking mechanism moves from the locking position to the initial position, the first toggle lever rotates in the second rotational direction under the biasing force of the first toggle biasing member to allow the toggle portion to pass over the mating toggle portion again.

[0016] For example, in some embodiments, the toggle assembly further includes a second toggle lever rotatably mounted to the first toggle lever around the second toggle lever axis, a second toggle biasing member biasing the second toggle lever in a second rotational direction relative to the first toggle lever, the toggle portion is disposed on the second toggle lever, and the second toggle lever axis is parallel to the first toggle lever axis. When the lock mechanism moves from the initial position to the lock position, the second toggle lever abuts against the first toggle lever under the biasing force of the second toggle biasing member so as to be able to rotate in the first rotational direction together with the first toggle lever. When the toggle portion again passes over the mating toggle portion, the mating toggle portion pushes the second toggle lever to rotate in the second rotational direction relative to the first toggle lever.

[0017] For example, in some embodiments, the cooperating toggle portion pushes the second toggle lever to rotate relative to the first toggle lever in the second rotation direction to reduce the distance of the toggle portion relative to the first toggle axis.

[0018] For example, in some embodiments, the first toggle lever includes a first toggle lever arm and a second toggle lever arm extending from the first toggle lever axis. When the lock mechanism moves from the initial position to the first intermediate position, the lock fitting portion abuts against the free end of the first toggle lever arm to push the first toggle lever to rotate in the first rotation direction. The second toggle lever axis is arranged on the second toggle lever arm. The second toggle lever includes a third toggle lever arm and a fourth toggle lever arm extending from the second toggle lever axis. When the lock mechanism moves from the initial position to the lock position, the third toggle lever arm abuts against the first toggle lever. The toggle portion is arranged on the fourth toggle lever arm.

[0019] For example, in some embodiments, the latching device further includes: an energy storage mechanism, which includes a latching engagement portion and an engagement biasing member that biases the latching engagement portion toward an energy release position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Shows a fused switchgear including a trip mechanism according to an embodiment of the present disclosure;

[0021] Figures 2A - 8B Shows Figure 1 A partial schematic view of the shown fused switchgear, which shows the trip mechanism, wherein Figure 2A 、 Figure 3A 、 Figure 4A 、 Figure 5A 、 Figure 6A 、 Figure 7A 、 Figure 8A Respectively show cross-sectional views in one section, Figure 2B 、 Figure 3B 、 Figure 4B 、 Figure 5B 、 Figure 6B 、 Figure 7B 、 Figure 8B Respectively show cross-sectional views in another section, wherein, Figure 2A and Figure 2B Show the trip mechanism in the initial position, Figure 6A and Figure 6B Show the trip mechanism in the latched position, Figure 4A and Figure 4B Show the trip mechanism in the first intermediate position, Figure 7A and Figure 7B Show the trip mechanism in the second intermediate position;

[0022] Figure 9A and Figure 9B Show a perspective view of an energy storage lever according to an embodiment of the present disclosure;

[0023] Figure 10A and Figure 10B Show a perspective view of a latching lever according to an embodiment of the present disclosure;

[0024] Figure 11A and Figure 11B Show a perspective view of a toggle assembly according to an embodiment of the present disclosure;

[0025] Figure 12 Show a perspective view of a trip member and a cooperating toggle according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, a tripping device including a tripping mechanism will be described in detail with reference to the accompanying drawings according to an embodiment of the present disclosure.

[0027] As Figure 1 shown, the integrated switchgear includes a housing 1, a locking mechanism 4, an energy storage mechanism 5, and a driving mechanism (not shown). The locking mechanism 4, the energy storage mechanism 5, and the driving mechanism are mounted to the housing 1. The energy storage mechanism 5 includes a helical compression spring 52 and a moving bracket 51. The upper end of the helical compression spring 52 (i.e., the cooperating biasing member) is connected to the housing 1, and the lower end of the helical compression spring 52 is connected to the moving bracket 51. When the integrated switchgear is in the open state and starts to close, the driving mechanism drives the moving bracket 51 to translate upward to compress the helical compression spring 52, thereby causing energy to be stored in the helical compression spring 52. Thus, the energy storage mechanism 5 is in the energy storage position, and then the locking mechanism 4 locks the energy storage mechanism 5 to the energy storage position. When a fault occurs in the circuit, such as a short circuit, etc., the locking mechanism 4 is triggered to release the locking of the energy storage mechanism 5. At this time, the energy storage mechanism 5 moves from the energy storage position to the energy release position, and drives the driving mechanism to drive the integrated switchgear to switch to the open state. When the energy storage mechanism 5 moves from the energy storage position to the energy release position, the moving bracket 51 translates downward to release the helical compression spring 52, thereby causing the energy stored in the helical compression spring 52 to be used to drive the integrated switchgear to open.

[0028] The locking mechanism 4 locks and releases the energy storage mechanism 5 by cooperating with the locking cooperation portion 511. In this example, the locking cooperation portion 511 is fixed to the moving bracket 51 and cooperates with the guiding opening 13 in the housing 1 to guide the translational movement of the moving bracket 51.

[0029] The locking mechanism 4 according to an embodiment of the present disclosure is particularly suitable for an energy storage mechanism 5 having a cooperating biasing member (such as a direct compression spring) that performs translational movement. However, it should be noted that the present disclosure does not limit the configuration of the energy storage mechanism 5, as long as the energy storage mechanism 5 is provided with a locking cooperation portion 511 that cooperates with the locking mechanism 4, and this locking cooperation portion 511 moves between the energy storage position and the energy release position. For example, the cooperating biasing member of the energy storage mechanism 5 can be in other forms such as a disc spring. For example, the cooperating biasing member of the energy storage mechanism 5 is not limited to performing translational movement, and it can also perform other forms of movement.

[0030] Figures 2A - 8B Shows Figure 1 A partial schematic view of the integrated switchgear shown, which shows the locking mechanism 4. Figure 2A 、 Figure 3A 、 Figure 4A 、 Figure 5A 、 Figure 6A 、 Figure 7A 、 Figure 8A Respectively show cross-sectional views in one section,Figure 2B , Figure 3B , Figure 4B , Figure 5B , Figure 6B , Figure 7B , Figure 8B A sectional view at another cross section is respectively shown.

[0031] like Figures 2A - 8B As shown, the locking mechanism 4 includes an energy storage lever 41, a locking lever 42, a toggle assembly, a release member 46 and a matching toggle member 45. The energy storage lever 41 is rotatably connected to the housing 1 around the energy storage rotation axis. The locking lever 42 is rotatably connected to the housing 1 around the locking rotation axis. The release member 46 and the matching toggle member 45 are fixedly connected to each other and are rotatably connected to the housing 1 around the release rotation axis. The toggle assembly includes a first toggle lever 43 and a second toggle lever 44. The first toggle lever 43 is rotatably mounted to the housing 1 around the first toggle lever axis. The second toggle lever 44 is rotatably mounted to the first toggle lever 43 around the second toggle lever axis. The energy storage rotation axis is parallel, the locking rotation axis, the release rotation axis, the first toggle lever axis and the second toggle lever axis are parallel to each other, and are all perpendicular to the paper plane ( Figures 1 - 8B ) direction.

[0032] In addition, the lock mechanism 4 further includes an energy storage biasing member (not shown), a lock biasing member (not shown), a matching toggle biasing member (not shown), a first toggle biasing member (not shown) and a second toggle biasing member (not shown). These biasing members may be torsion springs.

[0033] The energy storage biasing member biases the energy storage lever 41 in the counterclockwise direction (second rotational direction). The lock biasing member biases the lock lever 42 in the clockwise direction (first rotational direction). The mating toggle biasing member biases the trip member 46 and the mating toggle 45 in the clockwise direction. The first toggle biasing member biases the first toggle lever 43 in the counterclockwise direction. The second toggle biasing member biases the second toggle lever 44 in the counterclockwise direction relative to the first toggle lever 43.

[0034] The latch mechanism 4 includes an initial position and a latched position. In the latched position, the latch mechanism 4 locks the latch mating portion 511 of the energy storage mechanism 5 in the energy storage position. In the initial position, the latch mechanism 4 releases the locking of the latch mating portion 511 of the energy storage mechanism 5 to allow the latch mating portion 511 to move to the energy release position. When the latch mating portion 511 moves from the energy release position to the energy storage position, the latch mating portion 511 overcomes the biasing force of the energy storage biasing member to push the energy storage lever 41 to rotate in the clockwise direction and pass over one end of the energy storage lever 41, so that the latch mechanism 4 moves from the initial position to the latched position. The release member 46 includes an avoidance position and a stop position. When the latch mechanism 4 is in the latched position, the release member 46 is in the stop position and stops the latch lever 42 from rotating in the counterclockwise direction. The latch lever 42 stops the energy storage lever 41 from rotating in the clockwise direction, thereby locking the latch mechanism 4 in the latched position. When the latch mechanism 4 is in the latched position, the energy storage lever 41 stops the latch mating portion 511 from moving from the energy storage position to the energy release position. When the release member 46 is triggered to rotate to the avoidance position, the release member 46 releases the stop on the latch lever 42, so that the latch mechanism 4 moves from the latched position to the initial position. Therefore, the energy storage lever 41 releases the stop on the latch mating portion 511, allowing the latch mating portion to move from the energy storage position to the energy release position.

[0035] Figure 9A and Figure 9B shows a perspective schematic view of the energy storage lever 41 according to an embodiment of the present disclosure. As Figure 9A and Figure 9B shown, the energy storage lever 41 includes a first energy storage lever arm 416 extending from the energy storage rotation axis towards the latch mating portion 511 and a second energy storage lever arm 417 extending from the energy storage rotation axis towards the latch lever 42. In this example, the first energy storage lever arm 416 and the second energy storage lever arm 417 extend substantially in opposite directions. The free end of the first energy storage lever arm 416 is for mating with the latch mating portion 511 and has a first energy storage lever surface 411 and a second energy storage lever surface 412 (to be described in detail below). In this example, the first energy storage lever surface 411 and the second energy storage lever surface 412 are joined at an angle to each other to facilitate the latch mating portion 511 to be able to cross from one side of the second energy storage lever surface 412 over the first energy storage lever arm 416 to one side of the first energy storage lever surface 411, and from one side of the first energy storage lever surface 411 over the first energy storage lever arm 416 to one side of the second energy storage lever surface 412 (to be described in detail below). The second energy storage lever arm 417 has a third energy storage lever surface 413 on one side in the counterclockwise direction and a fourth energy storage lever surface 414 on one side in the clockwise direction. In addition, the second energy storage lever 41 further includes a fifth energy storage lever surface 415 on one side in the clockwise direction between the energy storage rotation axis and its free end (to be described in detail below).

[0036] Figure 10A and Figure 10B shows a perspective view of a latch lever 42 according to an embodiment of the present disclosure. As Figure 10A and Figure 10B shown, the latch lever 42 includes a latch lever arm 426 extending from a latch rotation axis. The latch rotation axis is disposed at one end in the longitudinal direction of the latch lever arm 426. The latch lever 42 further includes a first protrusion 427 extending in a lateral direction toward the energy storage lever 41 at the other end in the longitudinal direction of the latch lever arm 426, a second protrusion 428 extending in a lateral direction toward the energy storage lever 41 at an intermediate position of the latch lever arm 426, and a third protrusion 429 extending in a lateral direction toward the energy storage lever 41 at one end of the latch lever arm 426. The latch lever 42 further includes a first latch lever surface 421, a second latch lever surface 422, a third latch lever surface 423, a fourth latch lever surface 424, and a fifth latch lever surface 425 (to be described in detail below). The first latch lever surface 421 is disposed on one side of the second protrusion 428 in the clockwise direction. The second latch lever surface 422 is disposed on the other side of the second protrusion 428 in the counterclockwise direction. The third latch lever surface 423 is disposed at the end of the first protrusion 427, and in the latched position, the release member 46 abuts against the third latch lever surface 423 to stop the latch lever 42. The fourth latch lever surface 424 is disposed on one side of the third protrusion 429 in the clockwise direction for cooperation with a fourth energy storage lever surface 414 of the energy storage lever 41. The fifth latch lever surface 425 is disposed on the latch lever arm 426 between the first protrusion 427 and the second protrusion 428.

[0037] Figure 11A and Figure 11B shows a perspective view of a toggle assembly according to an embodiment of the present disclosure. As Figure 11A and Figure 11BAs shown, the toggle assembly includes a first toggle lever 43 and a second toggle lever 44 rotatably connected to the first toggle lever 43. The first toggle lever 43 includes a first toggle lever arm 431, a second toggle lever arm 432, and a fifth toggle lever arm 433 extending from the first toggle lever axis. The second toggle lever arm 432 includes two second toggle lever arms 432 that are parallel to each other and spaced apart. The second toggle lever 44 is mounted to the first toggle lever 43 between the two second toggle lever arms 432 so that its second toggle lever axis is disposed at the free end of the second toggle lever arm 432. The second toggle lever 44 includes a third toggle lever arm 441 and a fourth toggle lever arm 442 extending from the second toggle lever axis. The toggle portion 443 is disposed at the free end of the fourth toggle lever arm 442. The second toggle biasing member biases the second toggle lever 44 counterclockwise relative to the first toggle lever 43 so that one side of the third toggle lever arm 441 of the second toggle lever 44 in the counterclockwise direction abuts against a portion between the first toggle lever arm 431 and the second toggle lever arm 432 of the first toggle lever 43 .

[0038] Figure 12 FIG. 4 shows a three-dimensional schematic diagram of a release member 46 and a mating toggle member 45 according to an embodiment of the present disclosure. Figure 12 As shown, the trip member 46 and the mating toggle 45 are fixedly connected to each other. The trip member 46 is generally cylindrical, and includes a trip stop portion 461 and an escape cutout 462 in the trip stop portion 461. The mating toggle 45 includes a mating toggle arm 451 extending from the trip rotation axis and a mating toggle portion 452. A cylindrical mating toggle stop portion 453 is fixed to the free end of the mating toggle arm 451.

[0039] Figures 2A - 2B FIG. 4 shows a locking mechanism 4 in an initial position according to an embodiment of the present disclosure. Figures 2A - 2B As shown, in the initial position, the first locking lever surface 421 of the locking lever 42 abuts against the first stop portion 11 provided on the housing 1. The locking lever 42 is stopped by the first stop portion 11 to overcome the biasing force of the locking biasing member. In addition, the third energy storage lever surface 413 of the energy storage lever 41 abuts against the second locking lever surface 422 of the locking lever 42. The locking lever 42 stops the energy storage lever 41 to overcome the biasing force of the energy storage biasing member. Therefore, the locking lever 42 and the energy storage lever 41 are maintained in the initial position, wherein the free end of the first energy storage lever arm 416 of the energy storage lever 41 is on the moving path of the locking mating portion 511.

[0040] like Figures 2A - 2BAs shown, in the initial position, the fifth toggle lever arm 433 of the first toggle lever 43 is set to be blocked by the second stopper portion 12 of the housing 1 to overcome the biasing force of the first toggle biasing member. In addition, the third toggle lever arm 441 of the second toggle lever 44 abuts against the first toggle lever 43 to overcome the biasing force of the second toggle biasing member. Therefore, the toggle assembly is held in the initial position, wherein the free end of the first toggle lever arm 431 of the first toggle lever 43 is on the movement path of the latching engagement portion 511.

[0041] As Figures 2A - 2B shown, in the initial position, the mating toggle stopper portion 453 is blocked by the housing 1 to overcome the biasing force of the mating toggle biasing member. The release stopper portion 461 of the release member 46 is in the stopper position, in which the release stopper portion 461 is on the rotational movement path of the first protrusion 427 of the latching member.

[0042] Figures 6A - 6B Shown is the latching mechanism 4 in the initial position according to an embodiment of the present disclosure. As Figures 6A - 6B shown, in the latching position, the latching engagement portion 511 abuts against the second energy storage lever surface 412 of the energy storage lever 41 to apply a force to the energy storage lever 41 to rotate it in the clockwise direction, and this force is used to overcome the biasing force of the energy storage biasing member. The fourth energy storage lever surface 414 of the second energy storage lever arm 417 of the energy storage lever 41 abuts against the fourth latching lever surface 424 of the third protrusion 429 of the latching lever 42 to apply a force to the latching lever 42 to rotate it in the counterclockwise direction, and this force overcomes the biasing force of the latching biasing member. The third latching lever surface 423 of the first protrusion 427 of the latching lever 42 abuts against the release stopper portion 461 in the stopper position and is blocked by the release stopper portion 461 from rotating in the counterclockwise direction. Therefore, the energy storage lever 41 and the latching lever 42 are held in the latching position.

[0043] As Figures 6A - 6B shown, in the latching position, the latching engagement portion 511 abuts against the first toggle lever arm 431 of the first toggle lever 43 to apply a force to the first toggle lever 43 to rotate it in the counterclockwise direction, thereby overcoming the biasing force of the first toggle biasing member. In addition, the third toggle lever arm 441 of the second toggle lever 44 abuts against the first toggle lever 43. Therefore, the toggle assembly is held in the latching position.

[0044] Figures 2A - 6B Shown is the process of the latching mechanism 4 moving from the initial position to the latching position according to an embodiment of the present disclosure.

[0045] As Figures 2A - 6BAs shown, when the latch engaging portion 511 moves from the energy release position to the energy storage position from bottom to top, the latch engaging portion 511 drives the energy storage lever 41 to rotate in the clockwise direction by abutting against the second energy storage lever surface 412 of the energy storage lever 41 against the biasing force of the energy storage biasing member. Therefore, the latch engaging portion 511 passes over the free end of the first energy storage lever arm 416 of the energy storage lever 41, causing the latch mechanism 4 to move from the initial position to the latched position.

[0046] Figure 4A and Figure 4B shows the latch mechanism 4 in the first intermediate position. As Figure 4A and Figure 4B shown, the latch mechanism 4 further includes a first intermediate position during the process from the initial position to the latched position.

[0047] During the process in which the latch engaging portion 511 moves from the energy release position to the energy storage position from bottom to top, the latch engaging portion 511 drives the first toggle lever 43 and the second toggle lever 44 to rotate in the clockwise direction by overcoming the biasing force of the first toggle biasing member. As Figures 2A - 4B shown, the toggle portion 443 on the fourth toggle lever arm 442 of the second toggle lever 44 passes over the mating toggle portion 452 of the mating toggle member 45, and during the passing-over process, drives the mating toggle member 45 and the release member 46 to rotate in the counterclockwise direction by overcoming the biasing force of the mating toggle biasing member, causing the release member 46 to rotate from the stop position to the avoidance position in the counterclockwise direction. The energy storage lever 41 rotates in the clockwise direction, causing the free end of the first energy storage lever arm 416 to leave the movement path of the mating latch portion between the energy storage position and the energy release position, allowing the latch engaging portion 511 to pass over this free end of the first energy storage lever arm 416. At this time, the latch engaging portion 511 passing over this free end of the first energy storage lever arm 416 means that the latch engaging portion 511 passes from one side of the first energy storage lever surface 411 over the first energy storage lever arm 416 to the other side of the second energy storage lever surface 412. As Figure 3A and Figure 3B shown, when the energy storage lever 41 rotates in the clockwise direction, the energy storage lever 41 drives the latch lever 42 to rotate in the counterclockwise direction via the fourth energy storage lever surface 414 and the fourth latch lever surface 424. As Figures 3A - 4B shown, since the release member 46 is in the avoidance position, the first protrusion 427 of the latch lever 42 enters the avoidance notch 462. As Figures 4A - 4B shown, the rotation of the latch lever 42 in the counterclockwise direction can be stopped by the first stop portion 11 via the fifth latch lever surface 425, the rotation of the energy storage lever 41 in the clockwise direction can be stopped by the second stop portion 12 via the fifth energy storage lever surface 415, and the second protrusion 428 can abut against the second energy storage lever arm 417. As Figures 4A - 6BAs shown, after the latch engaging portion 511 passes over the free end of the first energy storage lever arm 416, due to the biasing force of the energy storage biasing member, the energy storage lever 41 rotates counterclockwise back into the movement path of the latch engaging portion 511 and abuts against the latch engaging portion 511 via the second energy storage lever surface 412. The latch lever 42 rotates clockwise due to the biasing force of the latch biasing member and the pushing of the energy storage lever 41, causing the first protrusion 427 to leave the avoidance notch 462. When the toggling portion 443 of the second toggling lever 44 passes over the mating toggling portion 452 of the mating toggling member 45, and when the first protrusion 427 of the latch lever 42 leaves the avoidance notch 462, due to the biasing force of the mating toggling biasing member, the release member 46 rotates clockwise from the avoidance position to the stop position. Thus, as described above, the third latch lever surface 423 of the first protrusion 427 of the latch lever 42 abuts against the release stop portion 461 to maintain the latched position of the latching mechanism 4.

[0048] Figures 6A - 8B The process of the latching mechanism 4 moving from the latched position to the initial position according to an embodiment of the present disclosure is shown. Figure 7A and Figure 7B The latching mechanism 4 in the second intermediate position is shown as Figure 7A and Figure 7B As shown, the latching mechanism 4 further includes a second intermediate position during the process from the latched position to the initial position.

[0049] As Figures 6A - 8B as well as Figure 2A and Figure 2B As shown, when the release member 46 is triggered, it rotates counterclockwise under the action of an external force to switch from the stop position to the avoidance position. Thus, the release member 46 releases the stop on the latch lever 42, causing the latching mechanism 4 to move from the energy storage position to the initial position.

[0050] As Figures 6A - 8B shown, when the release member 46 is triggered and the release member 46 switches to the avoidance position, the latch lever 42 rotates counterclockwise under the drive of the energy storage lever 41 against the biasing force of the latch biasing member, causing the first protrusion 427 to enter the avoidance notch 462. Since the latch lever 42 rotates counterclockwise, the stop on the energy storage lever 41 is released, and the energy storage lever 41 rotates clockwise to move out of the movement path of the latch engaging portion 511 between the energy storage position and the energy release position, allowing the latch engaging portion 511 to move downward from one side of the second energy storage lever surface 412 over the first energy storage lever arm 416 to the other side of the first energy storage lever surface 411 and move from the energy storage position to the energy release position. Thus, the moving bracket 51 to which the latch engaging portion 511 is mounted can drive the drive mechanism to trip the fusion switch. As Figure 7A and Figure 7BAs shown, the first protrusion 427 of the latch lever 42 enters the avoidance notch 462, the second energy storage lever arm 417 of the energy storage lever 41 is blocked by the second stop portion 12 of the housing 1, and the latch lever arm 426 of the latch lever 42 is blocked by the first stop portion 11 of the housing 1. Then, as Figure 8A and Figure 8B as well as Figure 2A and Figure 2B shown, the energy storage lever 41 rotates counterclockwise back to the initial position under the biasing force of the energy storage biasing member, the latch lever 42 rotates clockwise back to the initial position under the biasing force of the latch biasing member, and the first protrusion 427 of the latch lever 42 leaves the avoidance notch 462.

[0051] As Figures 6A - 8B as well as Figure 2A and Figure 2B shown, when the latch engaging portion 511 moves from the energy storage position to the energy release position, the latch engaging portion 511 releases the stop on the first toggle lever 43, causing the first toggle lever 43 to rotate counterclockwise. The first toggle lever 43 drives the toggle portion 443 of the second toggle lever 44 mounted thereon to cross over the mating toggle portion 452 of the mating toggle member 45 to return to the initial position. As Figure 8A and Figure 8B shown, when the toggle portion 443 of the second toggle lever 44 crosses over the mating toggle portion 452 of the mating toggle member 45, due to the interference between the toggle portion 44 and the mating toggle portion 452, the second toggle lever 44 can rotate clockwise relative to the first toggle lever 43 to reduce the distance of the toggle portion 443 from the first toggle axis. Therefore, the toggle portion 443 can smoothly cross over the mating toggle portion 452, and the mating toggle member 45 and the release member 46 do not have to move back to the stop position at this time. Therefore, the latch mechanism can operate reliably.

[0052] The latch device according to an embodiment of the present disclosure has a simple structure, reliable operation, and a small occupied volume.

[0053] The latch device according to an embodiment of the present disclosure can be applied to various switching devices, such as hybrid switches, disconnecting switches, etc., and is particularly suitable for cooperating with various direct-acting energy storage spring mechanisms. The application range is relatively wide. The latch device according to an embodiment of the present disclosure adopts a three-link structure of a latch lever arm, a first energy storage lever arm, and a second energy storage lever arm during latching, and can convert a large spring force into a small release force, facilitating the use in combination with various release devices.

[0054] The scope of the present disclosure is not limited by the above-described embodiments, but is defined by the appended claims and their equivalent scope.

[0055] List of Reference Numerals

[0056] Housing 1

[0057] First stop portion 11

[0058] Second stop portion 12

[0059] Guide opening 13

[0060] Latch mechanism 4

[0061] Energy storage lever 41

[0062] First energy storage lever surface 411

[0063] Second energy storage lever surface 412

[0064] Third energy storage lever surface 413

[0065] Fourth energy storage lever surface 414

[0066] Fifth energy storage lever surface 415

[0067] First energy storage lever arm 416

[0068] Second energy storage lever arm 417

[0069] Latch lever 42

[0070] First latch lever surface 421

[0071] Second latch lever surface 422

[0072] Third latch lever surface 423

[0073] Fourth latch lever surface 424

[0074] Fifth latch lever surface 425

[0075] Latch lever arm 426

[0076] First protrusion 427

[0077] Second protrusion 428

[0078] Third protrusion 429

[0079] First toggle lever 43

[0080] First toggle lever arm 431

[0081] Second toggle lever arm 432

[0082] Fifth toggle lever arm 433

[0083] Second toggle lever 44

[0084] Cooperating toggle member 45

[0085] Tripping member 46

[0086] Third toggle lever arm 441

[0087] Fourth toggle lever arm 442

[0088] Toggle portion 443

[0089] Tripping stop portion 461

[0090] Avoidance notch 462

[0091] Cooperating toggle arm 451

[0092] Cooperating toggle portion 452

[0093] Energy storage mechanism 5

[0094] Moving support 51

[0095] Latch cooperation portion 511

[0096] Helical compression spring (cooperating biasing member) 52.

Claims

1. A latching device, comprising: A housing; A latching mechanism, which includes an initial position and a latching position. In the latching position, the latching mechanism locks a latching mating part in an energy storage position. In the initial position, the latching mechanism releases the locking of the latching mating part to allow the latching mating part to move to an energy release position, wherein, The latching mechanism includes: An energy storage lever rotatably connected to the housing about an energy storage rotation axis; A latching lever rotatably connected to the housing about a latching rotation axis parallel to the energy storage rotation axis; A tripping member mounted to the housing to rotate between a clearance position and a stop position about a tripping rotation axis parallel to the energy storage rotation axis, When the latching mating part moves from the energy release position to the energy storage position, the latching mating part can overcome and push the energy storage lever to rotate in a first rotation direction, and pass over a first end of the energy storage lever close to the latching mating part, so that the latching mechanism moves from the initial position to the latching position, When the latching mechanism is in the latching position, the energy storage lever stops the movement of the latching mating part from the energy storage position towards the energy release position, the tripping member is in the stop position, and stops the rotation of the latching lever in a second rotation direction opposite to the first rotation direction, and the latching lever stops the rotation of the energy storage lever in the first rotation direction, The tripping member can be triggered to rotate to the clearance position to release the stop of the latching lever, so that the latching mechanism moves from the energy storage position to the initial position.

2. The latch device according to claim 1, wherein, The latching mechanism further includes: An energy storage biasing member that biases the energy storage lever towards the second rotation direction; A latching biasing member that biases the latching lever towards the first rotation direction.

3. The latching device according to claim 2, wherein, The housing includes a first stop portion, In the initial position, the latching lever is stopped by the first stop portion to overcome the biasing force of the latching biasing member, and the latching lever stops the energy storage lever to overcome the biasing force of the energy storage biasing member.

4. The latching device according to claim 1, wherein, The energy storage lever includes a first energy storage lever arm extending from the energy storage rotation axis, a free end of the first energy storage lever arm is the first end and the first energy storage lever arm has a first energy storage lever surface and a second energy storage lever surface, When the latching mating part moves from the energy release position to the energy storage position, the latching mating part abuts against the first energy storage lever surface of the energy storage lever to push the energy storage lever, When the latching mechanism is in the latching position, the latching mating part abuts against the second energy storage lever surface of the energy storage lever to apply a force to the energy storage lever to cause the energy storage lever to rotate in the first rotation direction.

5. The latching device according to claim 4, wherein, The first energy storage lever surface and the second energy storage lever surface are joined at an angle to each other, When the latch engaging portion passes over the first end of the energy storage lever, the latch engaging portion is converted from a state of abutting against the first energy storage lever surface to a state of abutting against the second energy storage lever surface.

6. The latch device according to claim 4, wherein the latch mechanism further includes a first intermediate position during the process from the initial position to the latched position, and a second intermediate position during the process from the latched position to the initial position, at the first intermediate position and the second intermediate position, the first end of the energy storage lever leaves the movement path of the mating latch portion between the energy storage position and the energy release position to allow the latch engaging portion to pass over the first end of the energy storage lever, the release member includes a release stop portion and an avoidance notch in the release stop portion, at the latched position, the latch lever is stopped by the release stop portion of the release member, at the first intermediate position and the second intermediate position, when the release member moves to the avoidance position, the latch lever rotates in the second rotation direction to pass through the avoidance notch.

7. The latch device according to claim 6, wherein the latch lever includes a latch lever arm that extends in the longitudinal direction, the latch rotation axis is provided at one end of the latch lever arm in the longitudinal direction, the latch lever further includes a first protrusion extending in the lateral direction toward the energy storage lever at the other end of the latch lever arm in the longitudinal direction, and a second protrusion extending in the lateral direction toward the energy storage lever at an intermediate position of the latch lever arm, the latch lever further includes a first latch lever surface, a second latch lever surface, and a third latch lever surface, the first latch lever surface is provided on one side of the second protrusion in the first rotation direction. At the initial position, the first stop portion abuts against the first latch lever surface to stop the latch lever, the second latch lever surface is provided on one side of the second protrusion in the second rotation direction. At the initial position, the latch lever stops the energy storage lever via the second latch lever surface, the third latch lever surface is provided at the end of the first protrusion. At the latched position, the release stop portion of the release member abuts against the third latch lever surface to stop the latch lever.

8. The latch device according to claim 7, wherein when the latch mechanism moves from the initial position to the first intermediate position, the latch engaging portion pushes the energy storage lever to rotate in the first rotation direction via the second energy storage lever surface and pushes the latch lever to rotate in the second rotation direction via the energy storage lever, when the latch mechanism moves from the latched position to the second intermediate position, the latch engaging portion pushes the energy storage lever to rotate in the first rotation direction via the first energy storage lever surface and pushes the latch lever to rotate in the second rotation direction via the energy storage lever.

9. The latch device according to claim 7, wherein The lock lever further includes a third protrusion extending in a lateral direction toward the energy storage lever at the one end of the lock lever arm, The energy storage lever comprises a second energy storage lever arm extending from the energy storage rotation axis toward the locking lever, the second energy storage lever arm having a third energy storage lever surface on one side in the second rotation direction and a fourth energy storage lever surface on one side in the first rotation direction, When the locking mechanism moves from the initial position to the first intermediate position and when the locking mechanism moves from the locking position to the second intermediate position, the fourth energy storage lever surface of the second energy storage lever arm abuts against the third protrusion.

10. The locking device according to claim 9, wherein: The housing comprises a second stopper, When the locking mechanism is in the first intermediate position and the second intermediate position, the second stop portion is configured to stop the energy storage lever from rotating in the first rotation direction via the second energy storage lever arm of the energy storage lever.

11. The locking device according to claim 6, wherein: The locking mechanism further includes a toggle assembly, a mating toggle member fixed to the trip member, and a mating toggle biasing member biasing the mating toggle member in the first rotational direction. The toggle assembly includes a first toggle lever rotatably mounted to the housing about a first toggle lever axis, a first toggle biasing member biasing the first toggle lever in the second rotational direction, and a toggle portion, wherein the first toggle lever axis is parallel to the energy storage rotation axis, When the lock mechanism moves from the initial position to the first intermediate position, the lock matching portion pushes the first toggle lever to rotate in the first rotation direction, so that the toggle portion passes over the matching toggle portion of the matching toggle piece and pushes the matching toggle portion of the matching toggle piece, so that the tripping member rotates from the stop position to the avoidance position in the first rotation direction. When the lock mechanism is in the lock position, the lock matching portion abuts against the first toggle lever to maintain the position of the toggle portion exceeding the matching toggle portion.

12. The locking device according to claim 11, wherein: When the lock mechanism moves from the lock position to the initial position, the first toggle lever rotates in the second rotational direction under the biasing force of the first toggle biasing member to allow the toggle portion to pass over the mating toggle portion again.

13. The locking device according to claim 12, wherein: The toggle assembly further includes a second toggle lever rotatably mounted to the first toggle lever about a second toggle lever axis, and a second toggle biasing member biasing the second toggle lever in a second rotational direction relative to the first toggle lever, the toggle portion being disposed on the second toggle lever, the second toggle lever axis being parallel to the first toggle lever axis, When the latch mechanism moves from the initial position to the latched position, the second toggle lever abuts against the first toggle lever under the biasing force of the second toggle biasing member so as to be capable of rotating in the first rotation direction together with the first toggle lever. When the toggling portion crosses the mating toggling portion again, the mating toggling portion pushes the second toggle lever to rotate relative to the first toggle lever in the second rotation direction.

14. The latching device according to claim 13, wherein the mating toggling portion pushes the second toggle lever to rotate relative to the first toggle lever in the second rotation direction to reduce the distance of the toggling portion relative to the first rotation axis.

15. The latching device according to claim 11, wherein the first toggle lever includes a first toggle lever arm and a second toggle lever arm extending from the first toggle lever axis. When the latch mechanism moves from the initial position to the first intermediate position, the latch mating portion abuts against the free end of the first toggle lever arm to push the first toggle lever to rotate in the first rotation direction. The second toggle lever axis is provided on the second toggle lever arm. The second toggle lever includes a third toggle lever arm and a fourth toggle lever arm extending from the second toggle lever axis. When the latch mechanism moves from the initial position to the latched position, the third toggle lever arm abuts against the first toggle lever. The toggling portion is provided on the fourth toggle lever arm.

16. The latching device according to claim 1, further comprising: a energy storage mechanism, which includes the latch mating portion and a mating biasing member that biases the latch mating portion towards the energy release position.

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