CN-115410843-B - Contact mechanism, distribution box and distribution system

CN115410843BCN 115410843 BCN115410843 BCN 115410843BCN-115410843-B

Abstract

The application provides a contact mechanism, a distribution box and a distribution system, the contact mechanism comprises a shell, a linkage piece, a fixed contact, a moving contact, an electromagnetic structure and a micro switch. The linkage member is slidably mounted to the housing in a first direction. The fixed contact is fixedly arranged on the shell and is positioned on one side of the moving contact, which faces the micro switch. The linkage piece comprises a first end and a second end which are arranged along a first direction, the first end of the linkage piece is connected with the moving contact, and the second end faces the micro switch. The linkage piece is used for sliding towards the micro switch along the first direction to drive the moving contact to contact with the fixed contact, and the micro switch is started. Or the linkage piece is also used for deviating from the micro switch along the first direction to slide so as to drive the moving contact to separate from the fixed contact and close the micro switch. The electromagnetic structure is in transmission connection with the linkage piece and is used for driving the linkage piece to slide along a first direction. The electromagnetic structure is connected with the controller, so that the work of the contact mechanism can be remotely controlled. The contact mechanism of the scheme has a simpler structure.

Inventors

LIN XIAOFEI
SUN JISHENG
ZHAO FUGAO
LIU JIE

Assignees

华为数字能源技术有限公司
华为数字能源技术有限公司

Dates

Publication Date: 20260421
Application Date: 20220816
Priority Date: 20220816

Claims (17)

1. The utility model provides a contact mechanism which characterized in that includes casing, link, stationary contact, moving contact, electromagnetic structure and micro-gap switch, wherein: The linkage piece is slidably mounted on the shell along a first direction and comprises a first end and a second end which are arranged along the first direction, the first end is connected with the moving contact, the second end faces towards the micro switch, and the fixed contact is fixedly arranged on the shell and is positioned on one side of the moving contact, facing towards the micro switch; the linkage piece is used for sliding towards the micro switch along the first direction to drive the moving contact to contact with the fixed contact, so as to start the micro switch, or sliding away from the micro switch along the first direction to drive the moving contact to separate from the fixed contact, so as to close the micro switch; The electromagnetic structure is in transmission connection with the linkage piece and is used for driving the linkage piece to slide along the first direction; the linkage is an integral structural member.
2. The contact mechanism of claim 1, further comprising an operating member mounted to the housing and drivingly connected to the linkage member for driving the linkage member to slide in the first direction.
3. A contact mechanism according to claim 1 or 2, wherein the movable contact is connected to the linkage member by an elastic member.
4. A contact mechanism according to claim 3, wherein a distance between an end face of said second end of said linkage member and an end face of said microswitch in an open state is greater than a distance between said stationary contact and said movable contact when said contact mechanism is in an open state.
5. The contact mechanism of claim 2, further comprising a transmission; The transmission piece comprises a limit groove, the limit groove comprises a first wall surface and a second wall surface which are arranged along the first direction, the linkage piece comprises a protrusion, and the protrusion extends into the limit groove; the transmission piece is connected with the operation piece, and the operation piece is used for driving the transmission piece to slide along the first direction, so that the first wall surface or the second wall surface is propped against the bulge, and the linkage piece is driven to slide along the first direction; Or the linkage piece comprises a limit groove, the limit groove comprises a first wall surface and a second wall surface which are distributed along the first direction, the transmission piece comprises a protrusion, the protrusion stretches into the limit groove, the transmission piece is connected with the operation piece, and the operation piece is used for driving the transmission piece to slide along the first direction, so that the protrusion is propped against the first wall surface or the second wall surface, and the linkage piece is driven to slide along the first direction.
6. The contact mechanism of claim 5, wherein a first resilient member is disposed between the protrusion and the first wall surface and/or a second resilient member is disposed between the protrusion and the second wall surface.
7. A contact mechanism according to claim 5 or 6, wherein the operating member is slidably mounted to the housing in the first direction, the operating member being of unitary construction with the transmission member.
8. The contact mechanism of any one of claims 1,2 and 4-6, wherein the electromagnetic structure comprises a coil, an iron core, a magnet and a deflector rod, the iron core comprises a cross rod and two vertical rods, the cross rod extends along the first direction, the two vertical rods are vertically connected with the cross rod to form the iron core, the coil is wound on the outer sides of the two vertical rods, the magnet is mounted on the shell through a rotating shaft and comprises at least one pair of magnetic poles, each pair of magnetic poles comprises an N pole part and an S pole part, the N pole part and the S pole part of each pair of magnetic poles are respectively positioned on two sides of the cross rod, the deflector rod is fixedly connected with the magnet, the deflector rod is in transmission connection with the linkage piece, and the coil is used for powering on and off to drive the magnet to rotate around the rotating shaft so as to drive the deflector rod to swing and drive the linkage piece to slide along the first direction.
9. The contact mechanism of claim 8, wherein said magnet comprises two pairs of said poles, said magnet comprising a third end and a fourth end aligned along said first direction, said third end comprising a pair of poles, said fourth end comprising a pair of poles.
10. The contact mechanism of claim 3, wherein the electromagnetic structure comprises a coil, an iron core, a magnet and a deflector rod, the iron core comprises a cross rod and two vertical rods, the cross rod extends along the first direction, the two vertical rods are vertically connected with the cross rod to form the iron core, the coil is wound on the outer sides of the two vertical rods, the magnet is mounted on the shell through a rotating shaft and comprises at least one pair of magnetic poles, each pair of magnetic poles comprises an N pole part and an S pole part, the N pole part and the S pole part of each pair of magnetic poles are respectively positioned on two sides of the cross rod, the deflector rod is fixedly connected with the magnet, the deflector rod is in transmission connection with the linkage piece, and the coil is used for energizing and de-energizing to drive the magnet to rotate around the rotating shaft to drive the deflector rod to swing and drive the linkage piece to slide along the first direction.
11. The contact mechanism of claim 7, wherein the electromagnetic structure comprises a coil, an iron core, a magnet and a deflector rod, the iron core comprises a cross rod and two vertical rods, the cross rod extends along the first direction, the two vertical rods are vertically connected with the cross rod to form the iron core, the coil is wound on the outer sides of the two vertical rods, the magnet is mounted on the shell through a rotating shaft and comprises at least one pair of magnetic poles, each pair of magnetic poles comprises an N pole part and an S pole part, the N pole part and the S pole part of each pair of magnetic poles are respectively positioned on two sides of the cross rod, the deflector rod is fixedly connected with the magnet, the deflector rod is in transmission connection with the linkage piece, and the coil is used for energizing and de-energizing to drive the magnet to rotate around the rotating shaft to drive the deflector rod to swing and drive the linkage piece to slide along the first direction.
12. The contact mechanism of claim 2, further comprising a locking structure, wherein the locking structure comprises a locking part, the locking part is mounted on the shell through a rotating shaft, one end of the locking part comprises a clamping head, the clamping head is used for being clamped with the inserting frame, the locking part further comprises a limiting surface, and when the operating part drives the linkage part to drive the micro switch to be opened, the operating part abuts against the limiting surface, so that the clamping head is fixed in a state of extending out of the shell.
13. The contact mechanism of claim 12, wherein the locking structure further comprises a reset member mounted between the housing and the locking portion for driving the chuck out of the housing.
14. The contact mechanism of claim 13, wherein the locking structure further comprises a driving block, wherein an end of the reset member remote from the housing is connected to the driving block, and wherein the driving block is connected to the locking portion by a bevel fit.
15. The contact mechanism of claim 2, further comprising an indicator light for indicating an on state or an off state of the contact mechanism, wherein the operating member comprises a light guide pole disposed opposite the indicator light.
16. The distribution box is characterized by comprising a box body and the contact mechanism according to any one of claims 1-15, wherein an insertion frame is arranged on the box body, the contact mechanism is inserted into the insertion frame, and the contact mechanism is used for being electrically connected with a power end of a distribution system.
17. A power distribution system comprising a power terminal and the electrical box of claim 16, wherein the electrical box is electrically connected to the power terminal.

Description

Contact mechanism, distribution box and distribution system Technical Field The application relates to the technical field of power distribution equipment, in particular to a contact mechanism, a power distribution box and a power distribution system. Background The contact mechanism is a switching device capable of carrying and breaking a current under normal circuit conditions and carrying and breaking a current under abnormal circuit conditions for a prescribed time. In addition, the electric energy can be distributed, the power supply circuit, the motor and the like can be protected, and the circuit can be automatically cut off when faults such as serious overload, short circuit, undervoltage and the like occur, so that the electric energy distribution device is widely applied to power electronic systems. The common contact mechanism is of a purely mechanical structure, has the problem of arc, and has low response speed. Disclosure of Invention The application provides a contact mechanism, a distribution box and a distribution system, wherein the contact mechanism realizes the linkage of the on-off of a moving contact and a fixed contact and the on-off of an electronic solid-state switch, and the structure of the contact mechanism is simpler. In a first aspect, the present application provides a contact mechanism comprising a housing, a linkage, a stationary contact, a moving contact, an electromagnetic structure, and a microswitch. Specifically, the micro switch, the fixed contact and the moving contact are sequentially arranged along the first direction. Wherein the linkage member is slidably mounted to the housing along a first direction. The fixed contact is fixedly arranged on the shell and is positioned on one side of the moving contact, which faces the micro switch. The linkage piece comprises a first end and a second end which are arranged along a first direction, wherein the first end of the linkage piece is connected with the moving contact, and the second end faces the micro switch. The linkage piece is used for sliding towards the micro switch along the first direction to drive the moving contact to contact with the fixed contact, and the micro switch is started. Or the linkage piece is also used for deviating from the micro switch along the first direction to slide so as to drive the moving contact to separate from the fixed contact and close the micro switch. When the static contact is separated from the moving contact, the whole electric disconnection of the contact mechanism is realized, which is equivalent to closing the contact mechanism. The micro switch is electrically connected with the electronic solid-state switch, so that the micro switch can control the on-off of the electronic solid-state switch. The linkage piece is an integrated structural piece, the linkage piece is used for realizing the linkage of the on-off of the moving contact and the fixed contact and the on-off of the electronic solid-state switch, and the structure is simpler. Furthermore, the present application may have a visible break point relative to a contact mechanism having only electronic solid state switches. The electromagnetic structure is in transmission connection with the linkage piece and is used for driving the linkage piece to slide along a first direction. The electromagnetic structure is connected with the controller, so that the remote control of the contact mechanism can be realized, and the work of the contact mechanism can be remotely controlled. In another technical scheme, the contact mechanism can further comprise an operation piece, the operation piece is in transmission connection with the linkage piece and used for driving the linkage piece to slide along the first direction X, and then the opening and closing of the contact mechanism can be controlled manually in a short distance. Therefore, the scheme can realize two control modes of manual operation and remote control of the contact mechanism, and the structure of the contact mechanism is simpler. When the movable contact is specifically arranged, the movable contact can be connected to the linkage piece through the elastic piece, and the elastic piece can absorb part of the travel, so that the installation accuracy can be reduced, and the cost is reduced. In addition, the travel of the linkage piece for driving the contact mechanism to open is larger than the distance between the fixed contact and the moving contact in the open state of the contact mechanism, so that the fixed contact and the moving contact can be reliably connected when the contact mechanism is opened. When the linkage piece is specifically arranged, and the contact mechanism is in an off state, the distance between the end face of the second end of the linkage piece and the end face of the micro switch in the on state is larger than the distance between the fixed contact and the moving contact. Then, the linkage piece continuously slides towards the direction of th