CN118197871B

CN118197871B - Binding post transmission device and circuit breaker

Info

Publication number: CN118197871B
Application number: CN202410613053.4A
Authority: CN
Inventors: 胡毓哈; 马世刚; 黄实; 曹名蕾; 肖磊; 王克明
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2024-05-17
Filing date: 2024-05-17
Publication date: 2024-08-20
Anticipated expiration: 2044-05-17
Also published as: CN118197871A

Abstract

The invention belongs to the technical field of piezoelectric devices, and discloses a wiring terminal transmission device and a circuit breaker, wherein the transmission device comprises a transmission bracket, a movable terminal assembly and a static terminal assembly, wherein the transmission bracket and the movable terminal assembly are fixedly arranged on a circuit breaker body; one of the transmission bracket and the movable terminal assembly is provided with a guide structure, the other is provided with a sliding structure, and the guide structure comprises a first guide section and a second guide section; the movable terminal assembly can be stopped in a state of being aligned with the static terminal assembly at intervals in the Z direction; the sliding structure sequentially and slidably cooperates with the first guide section and the second guide section when the body enters the drawer seat along the X direction, the sliding structure pushes the movable terminal assembly to move to contact with the static terminal assembly along the Z direction through slidably cooperates with the first guide section, the movable terminal assembly reaches a test position, the movable terminal and the static terminal are relatively static in the process from the test position to the connection position, the relative movement stroke of the movable terminal and the static terminal is greatly reduced, the contact stability of the movable terminal and the static terminal is improved, materials for manufacturing the terminals are reduced, and the cost is saved.

Description

Binding post transmission device and circuit breaker

Technical Field

The invention relates to the technical field of piezoelectric devices, in particular to a wiring terminal transmission device and a circuit breaker.

Background

Referring to fig. 1, the drawer type circuit breaker includes a drawer seat structure 1 'and a body structure 2' disposed in the drawer seat structure 1', the body structure 2' realizing on-off of a main circuit by shaking in and out. The body structure 2' is pushed to the separation position by the human in the process of entering the drawer seat structure 1', and can not be pushed manually again when reaching the separation position, and then the body structure is rocked into the drawer seat structure 1' by the handle, and the rocking process passes through the test position, and finally reaches the connection position. A movable terminal structure 3 'is usually fixed on the body structure 2', a cross beam 4 'is fixed on the drawer seat structure 1', a static terminal structure 5 'is fixedly installed on the cross beam 4', the movable terminal structure 3 'and the static terminal structure 5' are switched from a disconnection state to a contact state in the process from a separation position to a test position, and when the test position is reached, the movable terminal structure 3 'and the static terminal structure 5' just complete contact, and the movable terminal structure 3 'and the static terminal structure 5' keep electrical contact in the process from the test position to the connection position.

As shown in fig. 1, the existing movable terminal structure 3' and the static terminal structure 5' are inserted along the moving direction of the body structure 2', and the movable terminal structure 3' always moves forward along with the body structure 2' in the whole stroke from the separation position to the connection position, and the movable terminal structure 3' is always in a forward moving state relative to the static terminal structure 5 '. Specifically, from the separation position to the test position stage, the movable terminal structure 3 'moves toward the stationary terminal structure 5' until the two contact; the movable terminal structure 3 'continues to move forward from the test position to the connection position, the static terminal structure 5' keeps still, the movable terminal structure 3 'moves in a friction way along the static terminal structure 5' until reaching the connection position, the movable terminal structure 3 'has a longer moving stroke relative to the static terminal structure 5', the phenomenon that the contact point of the movable terminal structure 3 'and the static terminal structure 5' rubs for a long time exists, poor contact is caused, the integral shaking moment of the drawer seat structure 1 'can be increased, and the upper end of the body structure 2' is stressed, so that the stress inclination condition when the drawer seat enters is further increased; furthermore, in order to ensure that the movable terminal structure 3' and the stationary terminal structure 5' remain in the on state at this stage, it is necessary to ensure that the stationary terminal structure 5' has a sufficient length to prevent the movable terminal structure 3' from moving out of the stationary terminal structure 5', which leads to an increase in copper material used for manufacturing the terminal and an increase in material cost. And the terminal is excessively long in depth and can invade into the upper end of the arc extinguishing chamber.

Therefore, there is a need for a terminal block actuator and a circuit breaker to solve the above problems.

Disclosure of Invention

The invention aims to provide a wiring terminal transmission device and a circuit breaker, which can greatly reduce the moving stroke of a movable terminal structure, improve the contact stability of the movable terminal structure, reduce the moment when a body is rocked, relieve the stress inclination condition when the body structure enters a drawer seat structure, reduce the materials required for manufacturing the terminal, save the production cost and avoid the terminal from invading to the upper end of an arc extinguish chamber due to overlong.

To achieve the purpose, the invention adopts the following technical scheme:

in one aspect, a terminal block actuator is provided, including a drive bracket, a movable terminal block assembly, and a stationary terminal block assembly;

The transmission bracket is configured to be fixed on a body of the circuit breaker, the static terminal assembly is configured to be fixed on a drawer seat of the circuit breaker, and the body is movably arranged on the drawer seat along the X direction;

One of the transmission bracket and the movable terminal assembly is provided with a guide structure, the other one is provided with a sliding structure which is in sliding fit with the guide structure, the guide structure comprises a first guide section and a second guide section which are connected, the extending direction of the first guide section is between the X direction and the Z direction, and the second guide section extends along the X direction;

The movable terminal assembly can be stopped in a state of being aligned with the static terminal assembly at intervals in the Z direction along the X direction; the sliding structure is in sliding fit with the first guide section and the second guide section in sequence when the body enters the drawer seat, and the sliding structure is in sliding fit with the first guide section to push the movable terminal assembly to move along the Z direction to be in contact with the static terminal assembly;

the X direction is perpendicular to the Z direction, and the Z direction is the height direction of the breaker.

As the preferable scheme of the wiring terminal transmission device provided by the invention, the guide structure is a guide hole, the sliding structure is a sliding column, and the sliding column can be arranged in the guide hole in a penetrating manner in a sliding fit manner.

As the preferable scheme of the wiring terminal transmission device provided by the invention, the transmission bracket comprises a fixed plate and guide plates which are respectively arranged at two ends of the fixed plate along the Y direction, the fixed plate is fixedly arranged on the body, and the guide holes are formed in the guide plates;

The movable terminal assembly comprises a first mounting frame and movable terminals, the first mounting frame comprises a first mounting plate and limiting plates which are respectively arranged at two ends of the first mounting plate along the Y direction, the movable terminals are mounted on the first mounting plate, the limiting plates and the guide plates are stacked in one-to-one correspondence and can be in sliding fit, and the sliding columns are arranged on the limiting plates;

the Y direction is perpendicular to both the X direction and the Z direction.

As the preferable scheme of the wiring terminal transmission device, the wiring terminal transmission device further comprises an elastic piece, one end of the elastic piece is connected with the first mounting frame, and the other end of the elastic piece is directly or indirectly connected with the transmission bracket or the body; the sliding column is positioned at one end of the first guide section away from the second guide section under the action of the elasticity of the elastic piece.

As the preferable scheme of the wiring terminal transmission device provided by the invention, one end of the guide plate facing the first mounting plate is provided with a limiting surface, a first guide surface and a second guide surface which are sequentially connected along the X direction, the first guide surface is consistent with the extending direction of the first guide section, the second guide surface is consistent with the extending direction of the second guide section, the first mounting plate is initially arranged on the limiting surface, and the first mounting plate is in sliding fit with the first guide surface and the second guide surface.

As the preferable scheme of the wiring terminal transmission device provided by the invention, at least two guide holes are formed in each guide plate along the Z direction, at least two sliding columns are formed in each limiting plate along the Z direction, and the sliding columns are in one-to-one sliding fit with the guide holes.

As the preferable scheme of the wiring terminal transmission device provided by the invention, the static terminal assembly comprises a second mounting frame and a static terminal used for being in contact with the movable terminal, the second mounting frame is fixedly arranged on the drawer seat, the second mounting frame comprises a second mounting plate used for mounting the static terminal, one side of the second mounting plate along the X direction is provided with a limiting flanging, and the limiting flanging is used for stopping the first mounting plate in the X direction so as to align the movable terminal with the static terminal in the Z direction.

As the preferable scheme of the wiring terminal transmission device provided by the invention, one of the limit flanging and the first mounting plate is provided with the positioning protrusion, the other one of the limit flanging and the first mounting plate is provided with the positioning groove, the positioning protrusion is inserted into the positioning groove along the X direction, and the groove wall of the positioning groove limits the positioning protrusion along the Y direction.

As the preferable scheme of the wiring terminal transmission device provided by the invention, the opposite sides of the positioning bulge along the Y direction are provided with chamfers, and the chamfers are used for guiding the movement of the positioning bulge inserted into the positioning groove.

As the preferable scheme of the wiring terminal transmission device provided by the invention, the limiting flanging is provided with the avoidance grooves corresponding to the guide plates, and the guide plates are in sliding fit with the avoidance grooves.

As the preferable scheme of the wiring terminal transmission device provided by the invention, the sliding column is provided with the roller in a rolling sleeve manner, and the roller is in rolling fit with the inner wall of the guide hole.

As the preferable scheme of the wiring terminal transmission device provided by the invention, the guiding structure is a slideway, a chute is concavely arranged on the slideway, and the sliding structure is slidably clamped in the chute;

Or the guide structure is a guide rail protruding on the transmission support or the movable terminal assembly, and the sliding structure is slidably clamped outside the guide rail.

As a preferred scheme of the connecting terminal transmission device provided by the invention, the first guide section comprises a first guide section and a second guide section which are connected, and the first guide section is connected with the second guide section through the second guide section;

when the body is pushed to the separation position, the sliding structure is positioned at the junction of the first guide section and the second guide section;

The first guide section extends in a straight line and is parallel to the X direction or is arranged at an acute angle with the X direction; or the first guide section extends in a folding line; or the first guide section extends in a curve;

The guide Duan Er extends linearly and is arranged at an acute angle with the X direction; or the second guide section extends in a folding line; or the second guide section extends in a curve.

In another aspect, a circuit breaker is provided, comprising a body, a drawer seat, and a terminal transmission device as described above.

The invention has the beneficial effects that:

The invention provides a wiring terminal transmission device and a circuit breaker comprising the same, wherein a transmission bracket and a movable terminal assembly stop when a body of the circuit breaker enters a drawer seat along an X direction, the movable terminal assembly and a static terminal assembly are aligned at intervals in a Z direction during stop, and then the movable terminal assembly does not move along the X direction when the body continuously enters the drawer seat, and the transmission bracket continuously moves forwards along with the body due to being fixedly arranged on the body, so that the transmission bracket and the movable terminal assembly relatively move. In the relative movement stage, the sliding structure is in sliding fit with the first guide section and the second guide section of the guide structure in sequence, and the sliding structure can push the movable terminal assembly to move along the Z direction when in sliding fit with the first guide section, so that the movable terminal assembly is in contact with the static terminal assembly, the closing of the secondary circuit is realized, and the body is positioned at the test position. After the movable terminal assembly is contacted with the static terminal, the body continuously moves forwards and moves from the test position to the connection position, in the stage, the sliding structure is in sliding fit with the second guide section, and the movable terminal assembly does not move along the Z direction any more in the stage because the second guide section extends along the X direction, and is in a static state with the static terminal assembly until the body reaches the connection position. That is, in the stage from the test position to the connection position, both the movable terminal assembly and the stationary terminal assembly are stationary, there is no relative movement, and only the transmission support moves with the body, so that the relative movement stroke of the movable terminal assembly can be greatly reduced, the stability of the movable terminal and the stationary terminal after contact is improved, the movable terminal and the stationary terminal are ensured to be always in contact in the stage from the test position to the connection position, the stationary terminal assembly does not need to be set longer to avoid the movable terminal assembly from moving out of the stationary terminal assembly, the size reduction of the stationary terminal assembly is realized, the material required for manufacturing the terminal is reduced, the production cost is saved, and meanwhile, the condition that the terminal invades into the upper end of the arc extinguishing chamber due to overlong is avoided. In addition, in the whole moving process of the body, the position of the static terminal assembly is fixed, the stroke is zero, the movable terminal assembly does not move along the X direction along with the body after stopping, and only rises to be in contact with the static terminal assembly along the Z direction under the cooperation of the guide structure and the sliding structure, so that the stroke of the drawer seat is relatively short, and the contact stability of the movable terminal and the static terminal is effectively improved. In the stage of test position-connection position, the body does not need to overcome the friction force between the static terminal assembly and the movable terminal assembly, so that the moment when the body is rocked into the body is reduced, and the stress inclination condition when the body enters the drawer seat is relieved.

Drawings

Fig. 1 is a schematic structure view of a drawer type circuit breaker in the prior art;

Fig. 2 is a schematic view of a circuit breaker according to an embodiment of the present invention when a body of the circuit breaker is at an outermost position with respect to a drawer base;

Fig. 3 is a schematic diagram of a positive pair of a moving terminal assembly and a static terminal assembly in a Z direction in a circuit breaker according to an embodiment of the present invention;

fig. 4 is a schematic view of a circuit breaker according to an embodiment of the present invention when the body is moved to a separated position;

fig. 5 is a schematic view of a circuit breaker according to an embodiment of the present invention when the body is moved to a test position;

fig. 6 is a schematic view of a circuit breaker according to an embodiment of the present invention when the body is moved to a connection position;

Fig. 7 is a schematic plan view of a guide hole and a schematic track of a sliding column according to a first embodiment of the present invention;

fig. 8 is a schematic structural view of a terminal transmission device according to an embodiment of the present invention;

FIG. 9 is an exploded view of a terminal block assembly according to an embodiment of the present invention;

fig. 10 is a partial view of a body of a circuit breaker provided in an embodiment of the invention in an outermost position with respect to a drawer base;

FIG. 11 is a schematic view of a first mounting bracket for mounting a movable terminal provided in accordance with an embodiment of the present invention;

FIG. 12 is a schematic view of a second mount for mounting a static terminal provided in accordance with an embodiment of the present invention;

fig. 13 is a schematic view of a guide structure and a sliding structure provided in a second embodiment of the present invention;

fig. 14 is a schematic view of a guide structure and a sliding structure provided in a third embodiment of the present invention;

fig. 15 is a schematic diagram of a sliding structure track under various embodiments of the present invention.

In fig. 1:

1', drawer seat structure; 2', a body structure; 3', a movable terminal structure; 4', a cross beam; 5', static terminal structure.

Fig. 2 to 15:

1. a transmission bracket; 2. a moving terminal assembly; 3. a stationary terminal assembly; 4. an elastic member;

11. a fixing plate; 12. a guide plate;

121. A guide hole; 122. a limiting surface; 123. a first guide surface; 124. a second guide surface; 125. a first hooking groove; 126. a slideway; 1261. a chute; 127. a guide rail;

1211. a first guide section; 1212. a second guide section;

1211a, guide section one; 1211b, guide section two;

21. a first mounting frame; 22. a movable terminal; 23. a sliding column; 24. a slide block;

211. a first mounting plate; 212. a limiting plate;

2111. Positioning the bulge; 21111. chamfering; 2112. a first cavity; 2113. a first clamping groove;

2121. a second hooking groove; 231. a roller;

31. a second mounting frame; 32. a static terminal;

311. A second mounting plate; 312. limit flanging;

3111. a second cavity; 3112. a second clamping groove;

3121. a positioning groove; 3122. an avoidance groove;

100. A body; 200. a drawer seat; 300. a wiring terminal transmission device.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 2 to 6, the present embodiment provides a circuit breaker, in particular a drawer type circuit breaker, which includes a body 100, a drawer base 200, and a terminal transmission device 300. The main circuit is connected when the main circuit 100 is pushed into place in the drawer seat 200, and is disconnected when the main circuit 100 is taken out from the drawer seat 200.

For convenience of description, the moving direction of the main body 100 with respect to the drawer base 200 is defined as an X direction, the height direction of the circuit breaker is defined as a Z direction, the left-right width direction of the circuit breaker is defined as a Y direction, and the X direction, the Y direction and the Z direction are perpendicular to each other.

The terminal transmission device 300 is used for realizing the contact and separation of the secondary terminal, and referring to fig. 2, the terminal transmission device 300 comprises a transmission bracket 1, a movable terminal assembly 2 and a static terminal assembly 3. The transmission bracket 1 is configured to be fixed to the body 100 of the circuit breaker, in particular, to an upper end of the body 100. The static terminal assembly 3 is configured to be fixed to a drawer housing 200 of a circuit breaker. The movable terminal assembly 2 is slidably mounted on the transmission bracket 1, specifically, one of the transmission bracket 1 and the movable terminal assembly 2 is provided with a guide structure, the other one is provided with a sliding structure in sliding fit with the guide structure, the guide structure comprises a first guide section 1211 and a second guide section 1212 which are connected, the extending direction of the first guide section 1211 is between the X direction and the Z direction, the second guide section 1212 extends along the X direction, and the sliding structure is sequentially in sliding fit with the first guide section 1211 and the second guide section 1212 when the body 100 enters the drawer base 200. The movable terminal assembly 2 can be stopped in a state of being aligned with the stationary terminal assembly 3 at an interval in the Z direction when moving in the X direction, and at this time, the body 100 is in the separated position, and the movable terminal assembly 2 and the stationary terminal assembly 3 are in the separated state.

In the process that the transmission support 1 and the movable terminal assembly 2 enter the drawer seat 200 along with the body 100 of the circuit breaker along the X direction, the movable terminal assembly 2 is stopped firstly, and is in interval alignment with the static terminal assembly 3 in the Z direction during stopping, then when the body 100 continues to enter the drawer seat 200, the movable terminal assembly 2 does not move along the X direction any more, the transmission support 1 continues to move forwards along with the body 100 due to being fixedly arranged on the body 100, and the transmission support 1 and the movable terminal assembly 2 relatively move. In the relative movement stage, the sliding structure is in sliding fit with the first guide section 1211 and the second guide section 1212 of the guide structure in sequence, and when the sliding structure is in sliding fit with the first guide section 1211, the moving terminal assembly 2 can be pushed to move along the Z direction, so that the moving terminal assembly 2 is in contact with the static terminal assembly 3, closing of the secondary circuit is achieved, and the body 100 is at the test position. After the moving terminal assembly 2 is brought into contact with the stationary terminal 32, the body 100 continues to move forward from the test position to the connection position, in which stage the sliding structure is in sliding engagement with the second guide section 1212, since the second guide section 1212 extends in the X direction, in which stage the moving terminal assembly 2 is no longer moving in the Z direction, which is in a stationary state with the stationary terminal assembly 3, until the body 100 reaches the connection position. That is, in the stage from the test position to the connection position, both the movable terminal assembly 2 and the stationary terminal assembly 3 are stationary, there is no relative movement, and only the driving bracket 1 moves with the body 100, so that the relative movement stroke of the movable terminal assembly can be greatly reduced, the stability after the movable terminal is contacted is improved, the movable terminal is ensured to be always contacted in the stage from the test position to the connection position, and the stationary terminal assembly 3 does not have to be set longer to avoid the movable terminal assembly 2 from moving out of the stationary terminal assembly 3, the size reduction of the stationary terminal assembly 3 is realized, the material required for manufacturing the terminal is reduced, and the production cost is saved. Meanwhile, the condition that the terminal invades into the upper end of the arc extinguishing chamber due to overlong is avoided.

In addition, in the whole moving process of the body 100, the static terminal assembly 3 is fixed in position, the stroke is zero, the movable terminal assembly 2 does not move along the X direction along with the body 100 after stopping, and only rises to be in contact with the static terminal assembly 3 along the Z direction under the cooperation of the guide structure and the sliding structure, so that the stroke relative to the drawer seat 200 is also shorter, and the contact stability of the movable terminal and the static terminal is effectively improved. In addition, in the stage of 'test position-connection position', the body 100 does not need to overcome the friction force between the static terminal assembly 3 and the movable terminal assembly 2, so that the moment when the body 100 is rocked is reduced, and the stress inclination condition when the body 100 enters the drawer seat 200 is relieved.

In this embodiment, the guiding structure is a guiding hole 121, the sliding structure is a sliding column 23, and the sliding column 23 is slidably disposed in the guiding hole 121. The guide bore 121 has two bore sections, namely the first guide section 1211 and the second guide section 1212 described above. More specifically, the guide hole 121 is provided on the transmission bracket 1, and the slide post 23 is provided on the movable terminal assembly 2, both of which achieve contact of the movable terminal assembly 2 and the stationary terminal assembly 3 by a sliding fit. The direction of the body 100 entering the drawer seat 200 is defined as the positive direction X, and the direction of the body 100 moving out of the drawer seat 200 is defined as the negative direction X. Referring to fig. 2 to 7, the second guide section 1212 and the first guide section 1211 of the guide hole 121 are sequentially disposed in the X positive direction, and the first guide section 1211 extends obliquely downward with respect to the second guide section 1212. The sliding post 23 is initially at the end of the first guide segment 1211 remote from the second guide segment 1212 and eventually at the end of the second guide segment 1212 remote from the first guide segment 1211.

Of course, in other embodiments, the sliding post 23 may be disposed on the transmission bracket 1, and the guide hole 121 is disposed on the moving terminal assembly 2, where the first guide segment 1211 and the second guide segment 1212 are disposed in sequence along the positive X direction, and the first guide segment 1211 extends obliquely upward relative to the second guide segment 1212, and the moving terminal assembly 2 may also be moved to contact the static terminal assembly 3 along the Z direction by the cooperation of the sliding post 23 and the guide hole 121.

Referring to fig. 7, four broken lines L1, L2, L3, L4 are shown, in one-to-one correspondence with four positions of the body 100. The broken line S indicates the movement locus of the slide column 23 in the guide hole 121.

Wherein the broken line L1 represents "separated outer line". When the operator has not yet started pushing the body 100 into the drawer seat 200, the body 100 is at the outermost position relative to the drawer seat 200, as shown in fig. 2, and the sliding post 23 is at the end of the first guiding segment 1211 away from the second guiding segment 1212, corresponding to the dashed line L1.

The broken line L2 represents a "separation position line". The operator manually pushes the outermost body 100 to move the body 100 inwards relative to the drawer seat 200, the transmission bracket 1 on the body 100 and the moving terminal assembly 2 on the transmission bracket 1 synchronously move along with the body 100 until the moving terminal assembly 2 stops in the X direction, as shown in fig. 3, the moving terminal assembly 2 stops at a position opposite to the static terminal assembly 3 up and down, and in the process of fig. 2 to 3, the body 100 drives the moving terminal assembly 2 to move in the X direction through the transmission bracket 1, the sliding column 23 is always at one end of the first guide section 1211 away from the second guide section 1212, and the brackets of the transmission bracket 1 and the moving terminal 22 do not move relatively until the moving terminal assembly 2 stops at a position opposite to the static terminal assembly 3 up and down. After that, when the body 100 is pushed to move along the X direction, the movable terminal assembly 2 is not moved along the X direction any more, the transmission bracket 1 slides relative to the movable terminal assembly 2, so that the first guide section 1211 is matched with the sliding column 23, referring to fig. 4, the sliding column 23 moves upwards along the Z direction under the pushing action of the inner wall of the first guide section 1211 of the guide hole 121, the movable terminal assembly 2 moves upwards to be close to the static terminal assembly 3 under the driving of the sliding column 23 until the body 100 is pushed to reach the separating position by the operator, the separating position is a limit position where the body 100 is pushed inwards manually, when reaching the separating position, the body 100 cannot be moved into the drawer seat 200 by manual pushing any more, and then the body 100 needs to be further rocked into the drawer seat 200 by using the rocking handle, so that the scheme for rocking the body 100 into the drawer seat 200 is well known to those skilled in the art, and is not repeated herein. The state shown in fig. 4 is a schematic view when the body 100 reaches the separation position, in which the movable terminal assembly 2 is closer to the stationary terminal assembly 3 than the initial position, but still is in a separated state from the stationary terminal assembly 3, corresponding to the broken line L2 "separation position line". Referring to fig. 7, in the separated position, the center of the slide column 23 is at the intersection of the broken line L2 and the locus S.

The broken line L3 represents a "test position line". After the body 100 is pushed to the separation position, the body 100 is continuously rocked into the drawer seat 200 by using the rocking handle, at this time, the static terminal assembly 3 is kept still, the transmission bracket 1 continuously moves forward along the X direction along with the body 100, the sliding column 23 continuously drives the moving terminal assembly 2 to move upwards along the Z direction under the pushing action of the inner wall of the guide hole 121, when the sliding column 23 slides into the second guide section 1212, the moving terminal assembly 2 and the static terminal assembly 3 complete conductive contact, and the state shown in fig. 5 is that the moving terminal assembly 2 and the static terminal assembly 3 complete conductive contact, at this time, the body 100 reaches the test position corresponding to the dotted line L3 'test position line', referring to fig. 7, and during the test position, the center of the sliding column 23 is located at the intersection point of the dotted line L3 and the track S. In the stage of fig. 4 to 5, the body 100 reaches the test position from the separation position, and the slide column 23 enters the second guide section 1212 from the first guide section 1211, which passes through the inflection point P (see fig. 7).

The broken line L4 represents a "connection position line". After the body 100 reaches the test position, the movable terminal assembly 2 and the static terminal assembly 3 are in contact, and then the body 100 is continuously rocked into the drawer seat 200 by the rocking handle until the body 100 reaches the connection position shown in fig. 6, and the connection of the main circuit is completed. The connecting position shown in fig. 6 corresponds to a broken line L4 "connecting position line", referring to fig. 7, in which the center of the slide post 23 is at the intersection of the broken line L4 and the locus S, i.e., the slide post 23 reaches the end of the second guide section 1212 remote from the first guide section 1211. When the body 100 reaches the connecting position from the testing position, the sliding column 23 slides relatively in the second guiding section 1212, in this process, the moving terminal assembly 2 and the static terminal assembly 3 remain stationary, and only the transmission bracket 1 moves along the X direction along with the body 100, so that the moving terminal assembly 2 and the static terminal assembly 3 can be ensured to be always in contact and stable in contact in this stage, the relative movement stroke of the moving terminal assembly 2 and the static terminal assembly 3 is greatly reduced, the copper material used for manufacturing the terminal can be reduced, and the cost is reduced.

Referring to fig. 7, the broken lines L1, L2, L3, L4 divide the trajectory S into three segments of the trajectory a, the trajectory B, and the trajectory C, corresponding to three stages in the process from the initial position to the final reaching of the connection position of the body 100. Track a is the movement track of the slide column 23 when the body 100 moves from the outermost position to the separation position; the track B is the movement track of the sliding column 23 when the body 100 moves from the separation position to the test position; the trajectory C is a movement trajectory course of the sliding column 23 when the body 100 is moved from the test position to the connection position.

It can be understood that the process of the body 100 entering the drawer seat 200 is sequentially shown in fig. 2 to fig. 6, the process of the body 100 moving out of the drawer seat 200, i.e. the process from the connection position to the test position, the test position to the separation position, and the separation position to the outermost position, and the movement modes of each part are sequentially shown in fig. 6 to fig. 2, all the movements are reverse to the previous, and will not be repeated here.

Referring to fig. 8 and 9, the transmission bracket 1 includes a fixing plate 11 and guide plates 12 disposed at two ends of the fixing plate 11 along the Y direction, the fixing plate 11 and the two guide plates 12 are connected to form a U-shaped plate frame structure, the fixing plate 11 is fixedly disposed on the body 100 (e.g. fixed by screws) and parallel to the YZ plane, the guide plates 12 are parallel to the XZ plane, and the guide holes 121 are formed in the guide plates 12. Referring to fig. 11, the movable terminal assembly 2 includes a first mounting bracket 21 and a movable terminal 22, and the movable terminal 22 is for making conductive contact with the stationary terminal assembly 3. The first mounting frame 21 comprises a first mounting plate 211 and limiting plates 212 which are respectively arranged at two ends of the first mounting plate 211 along the Y direction, the first mounting plate 211 and the two limiting plates 212 are connected to form a U-shaped plate frame structure, the first mounting plate 211 is parallel to an XY plane, the movable terminal 22 is mounted on the first mounting plate 211, the limiting plates 212 are parallel to an XZ plane, the sliding columns 23 are arranged on the limiting plates 212, and the limiting plates 212 are stacked in one-to-one correspondence with the guide plates 12 and can be in sliding fit, so that the guide plates 12 can limit the first mounting frame 21 along the Y direction through the cooperation of the limiting plates 212. In this embodiment, the limiting plate 212 is located on the outer side of the guide plate 12 and slidably engaged with the guide plate 12, so as to limit the displacement of the limiting plate 212 along the Y direction.

Further, referring to fig. 9, the sliding column 23 is fixedly penetrating the limiting plate 212, the roller 231 is sleeved on the sliding column 23 in a rolling manner, and the roller 231 can roll along the inner wall of the guiding hole 121, so that on one hand, friction force generated when the sliding column 23 is in sliding fit with the guiding hole 121 is reduced, and on the other hand, when the sliding column 23 turns from the first guiding section 1211 to the second guiding section 1212, the sliding column is smooth due to rolling fit, and no clamping stagnation is caused.

In this embodiment, referring to fig. 8 and 9, the terminal transmission device 300 further includes an elastic member 4, where the elastic member 4 is connected to the transmission bracket 1 and the first mounting frame 21, and in combination with fig. 2 and 3, when the transmission bracket 1 and the movable terminal assembly 2 have not moved relatively, the sliding post 23 can be kept at an end of the first guiding segment 1211 away from the second guiding segment 1212 under the elastic force of the elastic member 4. After the movable terminal assembly 2 is stopped, the transmission bracket 1 and the movable terminal assembly 2 relatively move, during which the elastic member 4 is stretched until the sliding post 23 slides to the end of the second guide section 1212 remote from the first guide section 1211. In addition, during the process of moving the body 100 out of the drawer seat 200, the elastic element 4 is deformed, and can drive the limiting plate 212 to move and reset through the elastic force, so that the sliding column 23 returns to the end of the first guiding segment 1211 away from the second guiding segment 1212.

More specifically, an elastic piece 4 is arranged on each of two sides of the transmission bracket 1, so that the stress balance is ensured. The elastic member 4 is exemplified by a spring, referring to fig. 8 and 9, the guide plate 12 is provided with a first hooking groove 125, the limiting plate 212 is provided with a second hooking groove 2121, one end of the spring is hooked in the first hooking groove 125, and the other end of the spring is hooked in the second hooking groove 2121, so that the spring is firmly and firmly installed.

In other embodiments, the end of the elastic member 4 remote from the first mounting frame 21 may not be directly connected to the transmission bracket 1, for example, may be connected to other parts fixed to the transmission bracket 1; alternatively, the end of the elastic member 4 remote from the first mounting frame 21 may be directly connected to the body 100, or indirectly connected to the body 100, such as to other parts fixed to the body 100.

As shown in fig. 10, one end of the two guide plates 12 facing the first mounting plate 211 is provided with a limiting surface 122, a first guide surface 123 and a second guide surface 124 which are sequentially connected along the X direction, the limiting surface 122 extends along the X direction, the first guide surface 123 is consistent with the extending direction of the first guide section 1211, that is, is between the X direction and the Z direction, and the second guide surface 124 is consistent with the extending direction of the second guide section 1212, that is, extends along the X direction. The transmission bracket 1 and the movable terminal assembly 2 are defined as an initial state when they have not moved relatively, and as shown in fig. 10, the first mounting plate 211 is mounted on the limiting surface 122 of the guide plate 12 in the initial state. During the relative movement of the transmission bracket 1 and the movable terminal assembly 2, the sliding column 23 sequentially slides in the first guide section 1211 and the second guide section 1212, and simultaneously, the first mounting plate 211 sequentially slidingly cooperates with the first guide surface 123 and the second guide surface 124. The setting of limit surface 122, first guide surface 123 and second guide surface 124 can adapt to the relative motion of drive support 1 and first mounting bracket 21, further improves the direction precision.

In this embodiment, two guide holes 121 are disposed on each guide plate 12 along the Z direction, two sliding columns 23 are disposed on each limiting plate 212 along the Z direction, and the four sliding columns 23 are in sliding fit with the four guide holes 121 in a one-to-one correspondence, so as to improve the stability and the motion guiding precision of the transmission bracket 1 and the moving terminal assembly 2 during movement. In other embodiments, the number of the guide holes 121 and the sliding columns 23 can be increased or decreased adaptively, and the design is required.

Referring to fig. 8, 9 and 12, the stationary terminal assembly 3 includes a second mounting bracket 31 and a stationary terminal 32 for contacting the movable terminal 22, and the second mounting bracket 31 is fixed to the drawer base 200. The second mounting bracket 31 includes a second mounting plate 311 for mounting the stationary terminal 32, the second mounting plate 311 being parallel to the XY plane. The second mounting plate 311 is provided with a limit flange 312 along one side in the X direction, and the limit flange 312 is used for stopping the first mounting plate 211 in the X direction, so that the movable terminal 22 and the static terminal 32 are aligned in the Z direction. From fig. 2 to fig. 3, when the first mounting plate 211 of the movable terminal assembly 2 moves along with the transmission bracket 1 to abut against the limiting flange 312, the second mounting frame 31 is fixed on the drawer seat 200, so that the first mounting plate 211 cannot move continuously along the X direction, and positioning of the movable terminal assembly 2 in the X direction is realized, and at this time, the movable terminal 22 and the static terminal 32 are aligned in the Z direction (i.e. vertically aligned), so that the subsequent movable terminal 22 moves in the Z direction to contact with the static terminal 32.

Further, referring to fig. 9, 11 and 12, the first mounting plate 211 is provided with a positioning protrusion 2111, the limiting flange 312 is provided with a positioning groove 3121, in the moving process of the movable terminal assembly 2 to the static terminal assembly 3, the positioning protrusion 2111 is inserted into the positioning groove 3121 along the X direction, and the groove wall of the positioning groove 3121 is limited along the Y direction to position the positioning protrusion 2111, so that the positioning of the movable terminal assembly 2 in the Y direction is realized, so that the plurality of movable terminals 22 and the plurality of static terminals 32 are opposite to each other one by one, and the subsequent plugging is facilitated.

More specifically, referring to fig. 9 and 11, the positioning protrusion 2111 is provided with chamfers 21111 on opposite sides in the Y direction to form guide slopes for guiding the movement of the positioning protrusion 2111 into the positioning groove 3121. The provision of the chamfer 21111 on both sides allows the front end of the positioning protrusion 2111 to form a tip, which allows a certain amount of positional deviation of the first mounting plate 211 with respect to the second mounting plate 31 in the Y direction, improving the fault tolerance in plugging, and allowing the positioning protrusion 2111 to be inserted into the positioning groove 3121 more smoothly. When the position of the chamfer 21111 enters the positioning groove 3121, the chamfer 21111 finely adjusts the position of the first mounting plate 211 along the Y direction through the abutting contact with the side wall of the positioning groove 3121, and finally, the positioning of the movable terminal 22 on the first mounting plate 211 along the Y direction is realized, so that the movable terminal 22 and the static terminal 32 are completely opposite in the Z direction, and no positional deviation exists.

Of course, in other embodiments, the positioning protrusions 2111 may be provided on the limit flange 312, and the positioning grooves 3121 may be provided on the first mounting plate 211, so that the fine positioning and final positioning of the movable terminal 22 and the stationary terminal 32 in the Y direction may be achieved.

Referring to fig. 8 and 12, an avoidance groove 3122 is provided on the limit flange 312 corresponding to each guide plate 12, and during the movement of the guide plate 12 along the X direction, a portion of the guide plate 12 extends into the avoidance groove 3122 and is slidably engaged with the avoidance groove 3122. The avoiding groove 3122 is formed to avoid the interference between the guide plate 12 and the limit flange 312, and prevent the movement jamming of the transmission bracket 1.

Referring to fig. 9 and 11, a first cavity 2112 is formed in the first mounting plate 211, a plurality of movable terminals 22 are mounted in the first cavity 2112, and further, a plurality of first clamping grooves 2113 facing each other are formed in opposite inner walls of the first cavity 2112, and the first clamping grooves 2113 are used for clamping the movable terminals 22.

Referring to fig. 9 and 12, the second mounting plate 311 is provided with a second cavity 3111, a plurality of static terminals 32 are mounted in the second cavity 3111, and further, a plurality of second clamping grooves 3112 facing each other are provided on two opposite inner walls of the second cavity 3111, and the second clamping grooves 3112 are used for clamping the static terminals 32.

The guiding structure may be other forms of structure besides the form of the guiding hole 121, for example, in some other embodiments, referring to fig. 13, the guiding structure is a slide way 126 disposed on the guiding board 12, a slide groove 1261 is concavely disposed on the slide way 126, and the sliding structure may be the sliding column 23, which is slidably clamped in the slide groove 1261. The sliding post 23 is slidably engaged with the first guide section 1211 and the second guide section 1212 of the sliding slot 1261, so as to push the movable terminal assembly 2 along the Z direction to contact with the static terminal assembly 3, and when the movable terminal assembly 2 and the static terminal assembly 3 are stationary from the test position to the connection position, only the body 100 drives the transmission bracket 1 to move forward.

In still other embodiments, referring to fig. 14, the guide structure is a guide rail 127 protruding from the guide plate 12 of the transmission support 1, the sliding structure is in the form of a slide block 24, the slide block 24 is slidably clamped outside the guide rail 127, and the slide block 24 is rotatably mounted on the limiting plate 212 to adapt to the turning of the slide block 24 at the positions of the first guide section 1211 and the second guide section 1212 of the guide rail 127. Of course, the guide rail 127 may be provided on the stopper plate 212, and the slider 24 may be rotatably provided on the guide plate 12.

Referring to fig. 7, the first guide section 1211 includes a first guide section 1211a and a second guide section 1211b connected to each other, and the first guide section 1211a is connected to the second guide section 1212 through the second guide section 1211 b. The sliding column 23 slides from the beginning of the first guide segment 1211a to the end of the first guide segment 1211a during the movement of the body 100 from the outermost position to the separation position, and the sliding column 23 slides from the beginning of the second guide segment 1211b to the second guide segment 1212 during the movement of the body 100 from the separation position to the testing position. That is, when the body 100 is pushed to the separation position, the slide column 23 is located at the boundary of the first guide segment 1211a and the second guide segment 1211 b. To ensure that the movable terminal 22 and the stationary terminal 32 are separated when in the separation position, and that the movable terminal 22 can be in contact with the stationary terminal 32 when in the test position, the extending direction of the second guide segment 1211b needs to be between the X direction and the Z direction, more specifically, if the guide structure is disposed on the guide plate 12 and the sliding structure is disposed on the limiting plate 212, the extending direction of the second guide segment 1211b needs to be in an ascending trend.

Optionally, the first guide segment 1211a extends in a straight line and is parallel to the X direction or disposed at an acute angle to the X direction; or the first guide segment 1211a extends in a fold line; or the first guide segment 1211a may extend in a curve (e.g., an arc). And setting according to the requirements.

Optionally, the second guiding segment 1211b extends linearly and is disposed at an acute angle to the X direction, so as to ensure that the segment is in an ascending trend; or the second guide segment 1211b extends in a fold line; or the second guide segment 1211b extends in a curve. As required, it is only necessary to ensure that the second guide segment 1211b is in an upward trend.

As shown in fig. 15, the trace S, trace a, trace B, trace C, inflection point P, broken line L1, broken line L2, broken line L3, broken line L4 in the drawing are identical in meaning to the respective letter representations shown in fig. 7, see the foregoing. Schemes 1 through 6 are exemplarily given below with reference to fig. 15, corresponding to six different first guide segments 1211.

In the scheme 1, the first guide segment 1211a and the second guide segment 1211b extend linearly and are disposed at an acute angle to the X direction, such as the guide hole 121 shown in fig. 7, the slideway 126 with the chute 1261 shown in fig. 13, and the guide rail 127 shown in fig. 14, which are disposed on the guide plate 12, and the first guide segment 1211a and the second guide segment 1211b are inclined and rise. In the embodiment 1, the sliding track of the sliding structure in the first guide section 1211 is a straight line that is inclined upward.

In the scheme 2, the first guide segment 1211a and the second guide segment 1211b are both arc-shaped and extend, and the arc of the first guide segment 1211a and the second guide segment 1211b are consistent with each other and have a downward protruding direction, and accordingly, with reference to the track S in fig. 15, the sliding track of the sliding structure in the first guide segment 1211 is an arc-shaped rising curve (downward protruding direction).

In the scheme 3, the first guide segment 1211a and the second guide segment 1211b are both arc-shaped and extend, and the arc of the two is consistent and the protruding direction is upward, and correspondingly, with reference to the track S in fig. 15, the sliding track of the sliding structure in the first guide segment 1211 is an arc-shaped rising curve (protruding direction is upward).

In the scheme 4, the first guide segment 1211a and the second guide segment 1211b are both curved and extend, the protruding direction of the first guide segment 1211a is downward, the protruding direction of the second guide segment 1211b is upward, and the two segments are connected in an S shape, and correspondingly, with reference to the track S in fig. 15, the sliding track of the sliding structure in the first guide segment 1211 is in an S shape consistent with the shapes of the first guide segment 1211a and the second guide segment 1211 b.

In the scheme 5, the first guide segment 1211a and the second guide segment 1211b are both curved and extend, the protruding direction of the first guide segment 1211a is upward, the protruding direction of the second guide segment 1211b is downward, and the two segments are connected in an S shape, and correspondingly, with reference to the track S in fig. 15, the sliding track of the sliding structure in the first guide segment 1211 is in an S shape consistent with the shapes of the first guide segment 1211a and the second guide segment 1211 b.

In the scheme 6, the first guide segment 1211a extends linearly along the X direction, the second guide segment 1211b extends diagonally, the first guide segment 1211a and the second guide segment 1211b extend integrally as a folding line, and correspondingly, with reference to the track S in fig. 15, the sliding track of the sliding structure in the first guide segment 1211 is also a folding line.

The above-described arrangements are merely illustrative of the structures of the first guide segments 1211, and other forms of the first guide segments 1211 may exist, not specifically listed herein, as desired in a particular design.

Regardless of the shape of the first guide section 1211, the entirety thereof is necessarily in an upward trend, so that the movable terminal assembly 2 can be moved up in the Z direction into contact with the stationary terminal assembly 3 by pushing the sliding structure. It is emphasized that the second guide section 1212 extends in a straight line along the X-direction, and the track of the sliding structure therein is also a horizontal straight line.

Referring to fig. 15, in the course of moving the body 100 from the separated position to the test position, the sliding structure drives the movable terminal 22 to rise in the Z direction until the movable terminal 22 contacts the stationary terminal 32, and therefore, the locus of the sliding structure, i.e., locus B, necessarily has an inflection point P.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. The wiring terminal transmission device is characterized by comprising a transmission bracket (1), a movable terminal assembly (2) and a static terminal assembly (3);

The transmission bracket (1) is configured to be fixed on a body (100) of the circuit breaker, the static terminal assembly (3) is configured to be fixed on a drawer seat (200) of the circuit breaker, and the body (100) is movably arranged on the drawer seat (200) along the X direction;

One of the transmission bracket (1) and the movable terminal assembly (2) is provided with a guide structure, the other is provided with a sliding structure which is in sliding fit with the guide structure, the guide structure comprises a first guide section (1211) and a second guide section (1212) which are connected, the extending direction of the first guide section (1211) is between the X direction and the Z direction, and the second guide section (1212) extends along the X direction;

The movable terminal assembly (2) can be stopped in a state of being aligned with the static terminal assembly (3) at intervals in the Z direction along the X direction; the sliding structure is in sliding fit with the first guide section (1211) and the second guide section (1212) in sequence when the body (100) enters the drawer base (200), and the sliding structure is in sliding fit with the first guide section (1211) to push the movable terminal assembly (2) to move along the Z direction to be in contact with the static terminal assembly (3);

When the movable terminal assembly (2) is in contact with the static terminal assembly (3), the body (100) is positioned at a test position; -said sliding structure is in sliding engagement with said second guide section (1212) when said body (100) is moved from said testing position to said connecting position;

2. The terminal transmission device according to claim 1, wherein the guiding structure is a guiding hole (121), the sliding structure is a sliding column (23), and the sliding column (23) is slidably inserted into the guiding hole (121).

3. The connecting terminal transmission device according to claim 2, wherein the transmission bracket (1) comprises a fixed plate (11) and guide plates (12) which are respectively arranged at two ends of the fixed plate (11) along the Y direction, the fixed plate (11) is fixedly arranged on the body (100), and the guide holes (121) are formed in the guide plates (12);

The movable terminal assembly (2) comprises a first mounting frame (21) and movable terminals (22), the first mounting frame (21) comprises a first mounting plate (211) and limiting plates (212) which are respectively arranged at two ends of the first mounting plate (211) along the Y direction, the movable terminals (22) are mounted on the first mounting plate (211), the limiting plates (212) and the guide plates (12) are stacked in a one-to-one correspondence and can be in sliding fit, and the sliding columns (23) are arranged on the limiting plates (212);

the Y direction is perpendicular to both the X direction and the Z direction.

4. A terminal transmission according to claim 3, further comprising an elastic member (4), one end of the elastic member (4) being connected to the first mounting bracket (21), the other end of the elastic member (4) being directly or indirectly connected to the transmission bracket (1) or the body (100); the sliding column (23) is positioned at one end of the first guide section (1211) away from the second guide section (1212) under the elastic force of the elastic piece (4).

5. A terminal transmission according to claim 3, wherein one end of the guide plate (12) facing the first mounting plate (211) is provided with a limiting surface (122), a first guide surface (123) and a second guide surface (124) which are sequentially connected along the X direction, the first guide surface (123) is consistent with the extending direction of the first guide section (1211), the second guide surface (124) is consistent with the extending direction of the second guide section (1212), the first mounting plate (211) is initially arranged on the limiting surface (122), and the first mounting plate (211) is slidably matched with the first guide surface (123) and the second guide surface (124).

6. A terminal transmission according to claim 3, wherein each guide plate (12) is provided with at least two guide holes (121) along the Z direction, each limit plate (212) is provided with at least two sliding columns (23) along the Z direction, and the sliding columns (23) are in sliding fit with the guide holes (121) in a one-to-one correspondence.

7. A terminal transmission according to claim 3, wherein the stationary terminal assembly (3) comprises a second mounting frame (31) and a stationary terminal (32) for contacting with a movable terminal (22), the second mounting frame (31) is fixedly arranged on the drawer base (200), the second mounting frame (31) comprises a second mounting plate (311) for mounting the stationary terminal (32), one side of the second mounting plate (311) along the X direction is provided with a limit flange (312), and the limit flange (312) is used for stopping the first mounting plate (211) in the X direction so that the movable terminal (22) and the stationary terminal (32) are aligned in the Z direction.

8. The connection terminal transmission device according to claim 7, wherein one of the limit flange (312) and the first mounting plate (211) is provided with a positioning protrusion (2111), the other one of the limit flange (312) and the first mounting plate (211) is provided with a positioning groove (3121), the positioning protrusion (2111) is inserted into the positioning groove (3121) along the X direction, and a groove wall of the positioning groove (3121) limits the positioning protrusion (2111) along the Y direction.

9. The terminal transmission according to claim 8, wherein the positioning protrusion (2111) is provided with chamfers (21111) on opposite sides in the Y direction, the chamfers (21111) being used for guiding the movement of the positioning protrusion (2111) inserted into the positioning groove (3121).

10. The wiring terminal transmission device according to claim 7, wherein an avoidance groove (3122) is provided on the limit flange (312) corresponding to each guide plate (12), and the guide plates (12) are slidably matched with the avoidance grooves (3122).

11. The connecting terminal transmission device according to claim 2, wherein the sliding column (23) is provided with a roller (231) in a rolling sleeve manner, and the roller (231) is in rolling fit with the inner wall of the guide hole (121).

12. The connecting terminal transmission device according to claim 1, wherein the guiding structure is a slideway (126), a chute (1261) is concavely arranged on the slideway (126), and the sliding structure is slidably clamped in the chute (1261);

Or the guide structure is a guide rail (127) protruding on the transmission support (1) or the movable terminal assembly (2), and the sliding structure is slidably clamped outside the guide rail (127).

13. The terminal transmission according to any one of claims 1 to 12, wherein the first guide section (1211) comprises a first guide section (1211 a) and a second guide section (1211 b) connected to each other, the first guide section (1211 a) being connected to the second guide section (1212) via the second guide section (1211 b);

When the body (100) is pushed to the separation position, the sliding structure is positioned at the junction of the first guide section (1211 a) and the second guide section (1211 b);

The first guide section (1211 a) extends linearly and is parallel to the X direction or is arranged at an acute angle with the X direction; or the first guide section (1211 a) extends in a folding line; or the first guide section (1211 a) extends in a curve;

The second guide section (1211 b) extends linearly and is arranged at an acute angle with the X direction; or the second guide section (1211 b) extends in a folding line; or the second guide section (1211 b) extends in a curve.

14. Circuit breaker, characterized by comprising a body (100), a drawer seat (200) and a terminal transmission according to any of claims 1-13.