CN211238115U - Plug-in circuit breaker - Google Patents

Abstract

A plug-in circuit breaker includes a casing, a button mechanism and an operating mechanism, the button mechanism includes a button, the button includes a button member, the button mechanism drives the operating mechanism to perform closing/opening, and the circuit breaker further includes a circuit breaker arranged in the casing. When the button drives the circuit breaker to close, the abutting boss of the push-button mechanism drives the linkage to protrude out of the housing, and the button mechanism limits the linkage so that the abutting boss cannot Back into the housing, when the button drives the circuit breaker to open, the contacting boss of the linkage is retracted into the housing, the structure is simple, it can reliably prevent closing and plugging, and avoids the risk of live operation.

Description

plug-in circuit breaker

technical field

The utility model relates to the technical field of low-voltage terminal electrical appliances, in particular to a plug-in circuit breaker.

Background technique

With the rapid development of network communication technology, especially the popularization of 5G network applications, the requirements for circuit breakers to effectively improve the safety of electrical equipment are getting higher and higher. The traditional power supply method that uses a terminal circuit breaker to connect many sockets and plug-ins , it is far from meeting the requirements of safe power consumption and equipment protection. For example, the terminal circuit breaker for 5G communication equipment not only needs to be upgraded and improved in terms of miniaturization, intelligence, reliability, stability and other performance, but also needs to be used. Many new matching structures have been developed on the Drawer type, universal circuit breaker. The use of new plug-in circuit breakers can not only provide various safety protection performances of circuit breakers for power lines and electrical equipment, but also meet the needs of different electrical equipment for power quality, and enable circuit breakers to be plugged in. The way of pulling out, easy to install/remove the circuit. For this reason, the structure of the plug-in circuit breaker has been developed into various types, but under the development trend of miniaturization of electrical equipment, the overall structure and operation mode of the matching circuit breaker still need to be further improved, optimized and upgraded. .

The existing plug-in circuit breaker lacks the function of preventing plugging and unplugging in the closed state, or the structure of the locking device for the plugging-proof function is too complicated, the transmission is complicated, or the space required to be occupied is too much.

In addition, the locking device of the existing plug-in circuit breaker is usually driven by a button; at the same time, the opening and closing indication of the plug-in circuit breaker also needs to act to display the opening and closing status during opening and closing, and needs to cooperate with the opening and closing. There are many mechanisms for action, all of which need to be set up with independent transmission and coordination mechanisms, which take up a lot of space, which is not conducive to the miniaturized production design of the circuit breaker in the later stage.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a plug-in circuit breaker that can reliably prevent closing and plugging.

To achieve the above object, the utility model adopts the following technical solutions:

A plug-in circuit breaker includes a casing, a button mechanism and an operating mechanism, the button mechanism includes a button, the button includes a button member, the button mechanism drives the operating mechanism to perform closing/opening, and the circuit breaker further includes a circuit breaker arranged in the casing. When the button drives the circuit breaker to close, the abutting boss of the push-button mechanism drives the linkage to protrude out of the casing, and the button mechanism limits the linkage so that the abutting boss cannot Back into the housing, when the button drives the circuit breaker to open, the contacting boss of the linkage is retracted into the housing.

Preferably, the button further includes an indicator arranged in the button member for indicating the closing/opening state of the circuit breaker. When the button drives the circuit breaker to open, the indicator acts to indicate opening, and the linkage is driven to make the contact convex The table is retracted into the housing.

Preferably, when the button drives the circuit breaker to close, the indicator acts to indicate closing, and the abutting boss of the driving linkage protrudes out of the housing.

Preferably, when the button-driven circuit breaker is closed, the abutting boss of the button-driven linkage member protrudes out of the housing.

Preferably, the linkage member is rotatably arranged on the housing, one end is provided with an abutting boss, and the other end is provided with a linkage member driving portion extending in the direction of the button; the indicator member includes a rotating shaft, a display end face and a driving boss, The display end face is provided with an indication part used as an opening and closing sign, the button member is provided with a cavity-type installation hole inside, and the operation end face of the button member is provided with an observation window that is connected to the installation hole; the indicator member passes through the rotating shaft. It is installed in the installation hole of the button piece and can swing around the axis. The swing drives the indication part on the display end face to move under the observation window, and the corresponding opening and closing state is displayed by moving the indication part in the observation window; the button moves into the housing When the circuit breaker is driven to close, the driving boss of the indicator piece cooperates with the driving part of the linkage piece of the linkage piece to make the indicator piece rotate, so that the area on the display end surface corresponding to the closing state of the indication part corresponds to the observation window; the button moves to the outside of the casing to drive When the circuit breaker is switched off, the driving boss of the indicator piece cooperates with the driving part of the linkage piece, the indicator piece rotates so that the area corresponding to the opening state of the indicator part on the display end surface corresponds to the observation window, and the driving boss drives the linkage through the driving part of the link piece. The rotation of the piece makes the contacting boss of the link piece retreat into the housing.

Preferably, when the button moves into the housing to drive the circuit breaker to close, the driving boss of the indicator piece cooperates with the driving part of the link piece of the link piece to rotate the indicator piece and simultaneously rotate the link piece, so that the contact boss of the link piece protrudes from the housing outside the body.

Preferably, it also includes a locking piece, the locking piece is installed in the housing through an elastic piece, the locking piece is provided with a locking boss, when the circuit breaker is in an open state, the elastic piece makes the locking boss of the locking piece protrude from the housing Outside the body; the linkage is provided with an unlocking portion that cooperates with the locking member. After the circuit breaker is opened, when the button moves out of the casing, the indicator drives the linkage to rotate, and the unlocking portion of the linkage exerts force on the locking member to make the locking protrusion The table is retracted into the housing.

Preferably, the driving boss is provided with a left actuated end and a right actuated end at intervals, and the linkage member driving part of the linkage member is bent to one side of the button and is located between the left actuated end and the right actuated end, and the button is located between the left actuated end and the right actuated end. When the circuit breaker is moved in the casing to close, the left actuated end cooperates with the linkage driving part of the linkage, and when the button moves out of the casing, the right actuated end cooperates with the linkage driving part of the linkage.

Preferably, the button mechanism includes a button, a connecting rod and a driving member, the button drives the driving member to act through the connecting rod, the driving member is rotatably arranged in the casing, and is connected with the operating mechanism; It is installed in the casing, and its linear movement direction is perpendicular to the installation and insertion direction of the circuit breaker. The locking member includes an outrigger column. When the circuit breaker is in the closed state, the elastic member causes the locking boss of the locking member to protrude out of the casing. In addition, the outer side surface of the driving member is in abutment and cooperation with the overhanging column of the locking member, so that the locking member cannot be retracted into the housing.

Preferably, the housing is provided with a limiting hole, and the abutting boss of the linkage member and the locking boss of the locking member are matched with the same limiting hole.

Preferably, the abutting boss is a square boss, and both sides of the square boss are perpendicular to the installation and insertion direction of the circuit breaker.

The plug-in circuit breaker of the utility model realizes that the circuit breaker cannot be inserted into the cabinet or pulled out from the cabinet in the closed state through the cooperation of the button mechanism and a linkage, and the structure is very simple.

In particular, through the interlocking cooperation between the indicator arranged in the button member and the linkage, when the brake is opened, the indicator acts to indicate when the brake is opened, and at the same time, the contact boss of the linkage is driven to retreat into the housing, so as to realize the insertion of the brake when the brake is opened. The normal plugging and unplugging of the circuit breaker, through the cooperation of the indicator and the linkage, reduces the transmission mechanism that triggers the action of the two, so that the two occupy less space in the circuit breaker, which is conducive to the miniaturization of the circuit breaker.

In addition, when the action of the indicator indicates closing, the abutting boss of the driving linkage protrudes out of the housing 6, preventing the circuit breaker from being inserted and withdrawn in the closed state, thereby improving safety.

In addition, the linkage is also linked with the locking member. When the circuit breaker needs to be removed, the locking member is unlocked through the linkage, so that the locking boss of the locking member is retracted into the housing, so that the circuit breaker can be safely pulled out from the installation cabinet.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the plug-in circuit breaker of the present invention.

FIG. 2 is a schematic structural diagram of the button mechanism, the linkage and the lock in FIG. 1 .

Fig. 3 is a partial enlarged schematic view of the linkage member, handle and locking member of the present invention.

FIG. 4 is a schematic diagram of the structure state of the plug-in circuit breaker in the anti-live insertion state during the installation process.

FIG. 5 is a schematic diagram of the structure state of the plug-in circuit breaker in the state of preventing closing and pulling out.

Fig. 6 is a partial enlarged schematic view of the linkage member, the locking member and the handle in the correctly installed and closed state.

Fig. 7 is a partial enlarged schematic view of the opening and closing indication and unlocking mechanism of the button mechanism.

Fig. 8 is a partial enlarged schematic view of the opening and closing indicating and unlocking mechanism in the opening state.

Fig. 9 is a partial enlarged schematic view of the opening and closing indicating and unlocking mechanism in the closing state.

Figure 10 is a schematic diagram of the overall structure of the opening and closing indicating and unlocking mechanism in the state of opening and dismantling.

FIG. 11 is a schematic structural diagram of a specific embodiment of the linkage and the casing of the present invention.

Detailed ways

The specific embodiments of the plug-in circuit breaker of the present invention will be further described below with reference to the embodiments given in FIGS. 1 to 11 . The plug-in circuit breaker of the present invention is not limited to the description of the following embodiments.

As shown in FIG. 1 , the plug-in circuit breaker of the present invention includes a casing 6, a button mechanism, an operating mechanism 9 that is drivingly connected to the button mechanism, and a movable contact 9a connected to the operating mechanism 9, which is arranged opposite to the movable contact 9a. The static contact 9b generally also includes (but is not limited to) a short-circuit protection mechanism 11, an arc extinguishing device 12, an overload protection mechanism 14, an outgoing line connecting device 13, an incoming line connecting device 1a, 1b and other components of the circuit breaker (not shown in the figure), the button mechanism drives the operating mechanism 9 to drive the moving contact and the static contact to contact and close, or drive the operating mechanism 9 to drive the moving contact and the static contact to separate and open, and the button mechanism has the function of closing the circuit breaker. The closed position and the open position corresponding to the open/open state.

As shown in Figures 1-2, the plug-in circuit breaker is also provided with a locking device, and the housing 6 is provided with a limit hole 61 that cooperates with the locking device. There is a cabinet limit hole B0 on the hardware B. When the plug-in circuit breaker is installed in the working position, the limit hole 61 of the plug-in circuit breaker corresponds to the cabinet limit hole B0. When the plug-in circuit breaker is not installed in the working position At the time, the limit hole 61 of the plug-in circuit breaker is misaligned with the cabinet limit hole B0, and the cabinet sheet metal B will block the cabinet limit hole B0, which is the prior art in the field and will not be repeated here.

As shown in Figures 1, 4-5, the plug-in circuit breaker of the present invention includes a casing 6 provided with a limit hole 61, a button mechanism and an operating mechanism 9, the button mechanism drives the operating mechanism 9 to perform closing/opening, The button mechanism has a closed position and an open position corresponding to the closed/open state of the circuit breaker. The button mechanism includes a button 2, a connecting rod 7 and a driving member 5. The button 2 drives the driving member 5 to act through the connecting rod 7. The driving member 5 is arranged in the housing 6 to rotate and is connected with the operating mechanism 9; Button 2, the button 2 drives the driving member 5 to rotate to one side through the connecting rod 7, and the driving member 5 drives the operating mechanism 9 through the U-shaped rod 8 to drive the movable contact 9a to contact the static contact 9b to realize closing, pull the button 2, The button 2 drives the driving member 5 to rotate to the other side through the connecting rod 7, and the driving member 5 drives the operating mechanism 9 through the U-shaped rod 8 to drive the movable contact 9a to separate from the static contact to realize opening. The driving member 5 is similar in function to the handle of a traditional miniature circuit breaker, and the operating mechanism usually includes a contact support, a lock and a trip button connected to the movable contact 9a, a short-circuit protection mechanism 11 and an overload protection mechanism 14 and the lock of the operating mechanism. Corresponding setting of the buckle, when short circuit or overload occurs, it acts on the locking buckle respectively to make the operating mechanism trip and the circuit breaker to open for protection.

An improvement point of the present invention is that the circuit breaker further includes a locking device, and the locking device includes a linkage member 3 and a locking member 4 arranged in the housing 6, and the linkage member 3 is provided with an interference boss 31, The locking member 4 is provided with a locking boss 41 corresponding to the limiting hole 61 ; when the button mechanism is in the closed position, the abutting boss 31 of the linkage member 3 protrudes out of the housing 6 and is restricted by the button mechanism 2 In the extended position, it cannot be retracted into the housing; when the button mechanism is in the opening position, the linkage 3 retracts into the housing 6 , and the locking boss 41 of the locking member 4 protrudes from the limit hole 61 of the housing 6 . In addition, after a retracting external force is applied to the locking member 4, the locking member 4 can be pushed back into the housing 6 by the retracting external force. In one embodiment, the contact boss 31 of the linkage member 3 is arranged corresponding to the second limit hole on the housing 6 , and the second limit hole and the limit hole 61 are arranged side by side. When the button mechanism is in the closed position, , the abutting boss 31 protrudes out of the second limiting hole of the housing 6 . As another preferred embodiment, the second limiting hole and the limiting hole 61 are the same limiting hole, and the abutting boss 31 and the locking boss 41 share the same limiting hole 61 . In this embodiment, a solution in which the interference boss 31 and the locking boss 41 share the same limiting hole 61 is adopted.

As shown in FIGS. 4 and 11 , the circuit breaker is closed before installation, the linkage 3 is driven to rotate counterclockwise by the first driving part 20 of the button 2 , and the contact boss 31 of the linkage 3 protrudes out of the housing 6 outside of the limiting hole 61 of the circuit breaker, and the first drive part 20 of the button 2 is pressed against the first drive part 20 and restricted to the extended position and cannot be retracted into the casing. At this time, when the circuit breaker is re-installed into the cabinet, the right side of the abutting boss 31 The contour surface 31b collides with the lateral end surface B1 of the cabinet sheet metal part, so that the circuit breaker cannot be installed in the working position, avoiding live operation and improving safety.

As shown in FIG. 5 , when the circuit breaker is correctly installed and closed, the abutting boss 31 of the linkage 3 protrudes out of the limiting hole 61 of the housing 6 and is driven by the first driving part 20 of the button 2 . The abutment is limited in the extended position and cannot be retracted into the housing. The left contour surface 31a of the abutting boss 31 is in contact with a hole wall B2 of the cabinet limit hole B0 of the cabinet sheet metal part. At this time, the circuit breaker is pulled outwards. The circuit breaker cannot be pulled out from the working position, avoiding live operation and improving safety.

As shown in FIGS. 1 and 6 , the locking member 4 is installed in the housing 6 through an elastic member. The locking member 4 is provided with a locking boss 41 opposite to the limiting hole 61 , and the elastic member is installed on the locking member 4 and the housing. Between the body 6, the locking piece 4 has two working positions of extending and retracting. The elastic piece makes the locking boss 41 of the locking piece 4 protrude out of the limit hole 61. When the circuit breaker is opened, the After the locking member 4 exerts a retracting external force, the locking member 4 overcomes the biasing force of the elastic member to retract the locking boss 41 into the housing. By making the locking boss 41 of the locking member 4 protrude from the limit hole when the brake is opened, the circuit breaker can be effectively prevented from falling out of the cabinet due to vibration due to transportation and other reasons. Back into the housing, so that in the open state, when the circuit breaker is inserted into the cabinet, the locking boss 41 of the locking member 4 is retracted into the housing under the action of the external extrusion force exerted by the sheet metal parts of the cabinet, so that the circuit breaker can be inserted into the cabinet smoothly Inside. Preferably, the cross section of the locking boss 41 of the locking member 4 extending out of the limiting hole 61 is a right-angled trapezoid or a right-angled triangle, and the locking boss 41 includes a straight surface of the side wall of the vertical limiting hole 61 and an inclined surface, The straight surface faces the direction in which the circuit breaker is pulled out of the cabinet, and the inclined surface faces the direction in which the circuit breaker is inserted into the cabinet, so that the circuit breaker can be easily inserted into the cabinet when the switch is turned off. The elastic member is a compression spring 10, of course, the elastic member may also be other elastic members such as a torsion spring or a leaf spring.

Further preferably, as shown in FIG. 2 , when the push button mechanism is in the opening position, after a retracting external force is applied to the locking member 4, when the locking boss 41 of the locking member 4 is retracted into the housing, the locking member 4 and The button mechanism resists and cooperates to prevent the button mechanism from switching from the opening position to the closing position, so that the plug-in circuit breaker cannot be closed during the installation of the cabinet, and the button 2 cannot be pressed in place to avoid live operation. As shown in the preferred embodiment shown in FIG. 3 , the locking member 4 further includes an overhanging column 42 , and the driving member 5 includes a driving limit portion 51 that cooperates with the overhanging column 42 . In this embodiment, the driving limit The portion 51 is a step provided on the side wall of the driving member 5 , and of course can also be a groove or a protrusion provided on the driving member 5 . When the button mechanism is in the opening position, the driving limiter 51 of the driving member 5 turns to the position facing the outrigger column 42 of the locking member 4. When the plug-in circuit breaker is inserted but not installed in the working position, the limit of the plug-in circuit breaker is limited. The position hole 61 is misaligned with the limit hole B0 of the cabinet, the locking boss 41 of the locking member 4 is retracted into the casing under the action of the external extrusion force exerted by the sheet metal part of the cabinet, and the overhanging column 42 of the locking member 4 extends into the driving limit part 51. It cooperates with the driving limit part 51 and stops the driving member 5 from rotating in the closing direction, preventing the button mechanism from switching from the closing position to the closing position, so that the plug-in circuit breaker is installed in the installation position of the cabinet. Can not be closed to avoid live operation. In this embodiment, the locking member 4 and the driving member 5 resist and cooperate to prevent the button mechanism from switching from the opening position to the closing position, the layout structure is more reasonable, and the occupied space is small. Of course, the locking member 4 can also resist and cooperate with the button 2 or the connecting rod 7, for example, by being limited with the boss or the groove on the button 2, the button 2 cannot be pressed into the circuit breaker to close; The hook of the hook resists and cooperates, so that the connecting rod 7 cannot move in the closing direction.

Further preferably, as shown in FIG. 5 , when the button mechanism is in the closing position, the locking boss 41 of the locking member 4 protrudes out of the limiting hole 61 of the housing 6 and is limited by the button mechanism to the extended position. It cannot be retracted into the housing, it is used to assist the linkage 3 to prevent the circuit breaker from being inserted into the cabinet and pulled out from the cabinet in the closed state (the locking member 4 plays an auxiliary role, because the inclined surface 412 of the locking boss 41 of the locking member is connected to the circuit breaker The outer surface of the circuit breaker is inclined at a certain angle, even if the locking boss 41 is always exposed, due to the elasticity of the sheet metal structure of the cabinet, it is still possible to force the circuit breaker into the circuit breaker under the closing condition, causing potential safety hazards). In a preferred embodiment, the driving member 5 has an outer side surface 52. When the button mechanism is in the closed position, the locking boss 41 of the locking member 4 protrudes out of the housing 6, and the driving limit portion 51 of the driving member 5 Rotate away and dislocate from the outrigger column 42, so that the outer side 52 of the driving member 5 rotates to a position where it resists and cooperates with the outrigger column 42 of the locking member 4, so that the locking member 4 cannot be retracted into the housing 6; the button mechanism is in the opening state When in position, the outer side surface 52 of the driving member 5 is dislocated from the locking member 4 to release the resisting cooperation. At this time, the driving limiting portion 51 of the driving member 5 rotates to the position corresponding to the outrigger column 42 .

Further preferably, after the circuit breaker is switched off, the button mechanism can be pulled to move out of the casing 6, and the locking boss 41 of the locking member 4 is retracted to the casing during the process of the button mechanism moving out of the casing 6. 6 within. Preferably, during the movement of the button mechanism toward the outside of the casing 6 , the button mechanism drives the linkage member 3 , and the linkage member 3 drives the locking member 4 to unlock so that the locking boss 41 returns to the casing 6 . As shown in FIG. 3, in a preferred embodiment of the locking member 4, the locking member 4 is installed in the housing 6 through a linear moving pair, and the direction of its linear movement is perpendicular to the installation and insertion direction of the circuit breaker. The locking member 4 is arranged between the button mechanism and the limit hole 61. The locking member 4 is provided with a locking boss 41 on the upper part near the limit hole 61, and an outrigger column 42 on the lower part near the button mechanism. One side of 41 is provided with a linkage step 43 that cooperates with the linkage member 3. The elastic member is installed between the lower part of the locking member 4 and the housing 6, and the elastic member makes the locking boss 41 of the locking member 4 protrude out of the limit hole 61. After the circuit breaker is opened, during the process of the button mechanism moving out of the housing 6, the button mechanism drives the linkage member 3, the linkage member 3 acts on the linkage step 43, and the locking member 4 overcomes the elastic force of the elastic member to lock the The boss 41 is retracted into the housing 6 . Obviously, the beneficial effects of this solution are: first, since the locking member 4 moves linearly perpendicular to the installation and insertion direction A, it can effectively prevent or reduce the force deformation and deformation of the locking member 4 and the cabinet sheet metal part inserted into the receiver. / or micro displacement. Second, when the driving member 5 is in the closing position, the direction of the force acting on the locking member 4 by the outer side surface 52 is substantially parallel to the direction of its linear movement, so it is difficult for the locking member 4 to retreat to the retracted position by pulling out brute force. Third, since the chute-slider pair can provide a great restraint force in the direction perpendicular to the horizontal movement, the cooperation between the outrigger column 42 and the drive limiter 51 can provide a great force for the drive member 5 . Resist the binding force of closing, thus effectively ensuring that the circuit breaker is not accidentally closed during the plug-in operation.

As shown in FIGS. 1 and 6 , in a preferred embodiment of the linkage member 3 , the linkage member 3 is rotatably arranged on the housing 6 and is located between the button mechanism 2 and the limit hole 61 , and the linkage member 3 includes a friction The boss 31 and the actuated boss 32, during the closing process, the button mechanism pushes the actuated boss 32 to make the interference boss 31 protrude out of the limit hole 61, and the button mechanism and the actuated boss 32 resist and cooperate to cause the interference The boss 31 cannot be retracted into the housing 6. During the opening process, the button mechanism releases the resisting cooperation with the actuated boss 32 and gives way, and the abutting boss 31 retreats into the housing. The button mechanism includes a button 2, a connecting rod 7 and a driving member 5. The button 2 drives the driving member 5 through the connecting rod 7 to act. 2 is provided with a first driving part 20 that cooperates with the driven boss 32 , the push button 2 drives the operating mechanism to close through the connecting rod 7 and the driving member 5 , and the first driving part 20 on the button 2 passes through the driven boss 32 The driving linkage 3 rotates counterclockwise so that the abutting boss 31 protrudes out of the limiting hole 61. When the button mechanism is in the closing position, the button 2 and the driven boss 32 and the longitudinal surface 20a of the first driving part 20 (meaning Refers to the surface set along the installation and insertion direction A) abutting, so that the abutting boss 31 cannot be retracted into the housing 6, preventing the plugging and unplugging of the circuit breaker in the closed state, and avoiding live operation. Pull the button 2 to drive the operating mechanism to open through the connecting rod 7 and the driving member 5. When the button mechanism is in the open position, the first driving part 20 of the button 2 and the driven boss 32 are dislocated and avoided, so that the conflicting boss 31 returns to the shell in vivo. When the button mechanism is in the switch-off position, the linkage 3 can be driven by the button mechanism to rotate clockwise to make the contact boss 31 retreat into the housing. Of course, a spring can also be set to rotate clockwise, or rely on it to contact one end of the boss 31 gravity rotates clockwise.

Preferably, the linkage 3 further includes an unlocking part 34 that cooperates with the locking part 4 and a linkage driving part 33 that cooperates with the button mechanism. After the circuit breaker is opened, the button mechanism is driven by the linkage when moving out of the housing 6 The portion 33 drives the linkage member 3 to rotate, and the unlocking portion 34 exerts force on the locking member 4 to make the locking boss 41 of the locking member 4 retract into the housing 6 . Specifically, in the preferred embodiment of the linkage member 3 , a rotation center is provided in the middle of the linkage member 3 , an interference boss 31 is provided on one side close to the limiting hole 61 at one end, and a locking member 4 is provided on the other side of one end. The other end of the matching unlocking part 34 is provided with a link driving part 33 bent toward the button mechanism, and a driven boss 32 is provided between the rotation center and the abutting boss 31 on the side close to the button mechanism. The button mechanism is provided with a driving part that cooperates with the linkage driving part 33. During the opening process, the button mechanism releases the resisting cooperation with the driven boss 32 during the process of moving out of the housing 6 and gives way, and the button mechanism The driving part on the upper pulls the linking member driving part 33 to drive the linking member 3 to rotate, so that the contacting boss 31 is retracted into the casing; when the button mechanism is in the opening position, the button mechanism can be pulled to move out of the casing 6, and the button mechanism is moved toward the outside of the casing 6. During the process of the casing 6 continuing to move outside, the driving part continues to drive the linkage 3 to rotate, so that the unlocking part 34 applies a retracting external force to the locking member 4 , and the locking member 4 returns to the casing 6 .

One embodiment is that when the button mechanism is in the opening position, the pull button 2 drives the linkage 3 to continue to rotate clockwise through the linkage driving part 33, so that the unlocking part 34 is pressed against the linkage step 43 of the locking member 4, so that the locking member The locking boss 41 of 4 is retracted into the housing 6, so that the circuit breaker can be smoothly pulled out from the cabinet by pulling the button 2 after opening. In one embodiment, the boss on the button 2 is used as the driving part, and the bending part is pulled to make the contact boss 31 of the linkage 3 retreat into the housing when the brake is opened. In another embodiment, a return spring can also be used to make the contacting boss 31 of the linkage 3 rotate in a direction away from the limit hole 61, and the button mechanism releases the resisting cooperation with the driven boss 32 and gives way when the brake is opened Afterwards, the return spring makes the abutting boss 31 of the linkage member 3 retreat into the housing.

As a preferred embodiment, the button 2 of the button mechanism includes a button member 21 and an indicator member 22, through which the indicator member 22 cooperates with the linkage member 3 to realize opening and closing indication at the same time, and a locking protrusion capable of driving the locking member 4 after opening The stage 41 is retracted into the housing 6 . The indicator 22 includes a rotating shaft 221, a display end face 223 and a driving boss 222 arranged on the rotating shaft 221. The driving boss 222 is used as a driving part to cooperate with the link driving part 33 of the linkage member 3. The display end face 223 is provided with There is an indication part used as an opening and closing sign, and the indication part is provided with a corresponding color block or text used as an opening and closing sign. The end face is provided with an observation window 212 that communicates with the installation hole 211. The indicator member 22 is installed in the installation hole 211 of the button member 21 through the rotating shaft 22 and can swing around the axis. The swing drives the indicator portion on the display end face 223 to the observation window. When the circuit breaker is closed, the button 2 moves into the housing 6, and the driving boss 222 cooperates with the linkage driving part 33 to make the indicator 22 is rotated, so that the area corresponding to the closed state of the indication part on the display end face 223 corresponds to the observation window 212; when the circuit breaker is opened, the button 2 moves to the outside of the housing 6, and the driving boss 222 of the indication part 22 and the driving part of the linkage part 33, and the indicator 22 rotates so that the area of the indicator portion on the display end face 223 corresponding to the opening state and the observation window 212 corresponding to the opening state. At the same time, the driving boss 222 drives the linking member 3 to rotate through the linking member driving portion 33 to make the contact boss 31 retreat into the housing. At this time, the unlocking portion 34 of the linking member 3 has not yet driven the locking member 4 to retreat into the housing 6 (the unlocking portion 34 After the circuit breaker is switched off, continue to pull the button 2, when the button 2 moves to the outside of the housing 6, the driving boss 222 drives the linkage through the linkage driving part 33 3 is rotated, the unlocking portion 34 exerts force on the locking member 4 to make the locking member 4 retract into the housing 6 .

In this embodiment, when the circuit breaker is closed, the first driving part 20 of the button 2 cooperates with the actuated boss 32 of the linkage member to drive the contact boss 31 of the linkage member to protrude out of the casing 6 . As another embodiment, the indicator 22 can also drive the contact boss 31 of the linkage 3 to protrude out of the casing 6, that is, when the button 2 moves into the casing 6 to drive the circuit breaker to close (see FIG. 9 ) , the driving boss 222 of the indicator 22 cooperates with the linkage driving part 33 of the linkage 3, and the indicator 22 rotates so that the area corresponding to the closing state of the indicator on the display end face 223 corresponds to the observation window 212 when the closing state is indicated, and at the same time the indicator is turned on. The linkage member 3 rotates so that the abutting boss 31 of the linkage member 3 protrudes out of the housing 6 .

Specifically, as shown in FIGS. 7 to 9 , the driving boss 222 is arranged on one side of the rotating shaft 221 , and the driving boss 222 extends out of the button 2 to cooperate with the linkage driving part 33 , and of course it can also be the linkage driving part 33 It is bent and extended into the button 2 to cooperate with the driving boss 222 . In addition, the driving boss 222 may not be provided on the rotating shaft 221 , such as on the side of the connecting rod between the rotating shaft 221 and the display end surface 223 .

Preferably, a left actuated end 222b and a right actuated end 222a are arranged on the driving boss 222 of the indicator 22 at intervals, and the linkage driving part 33 of the linkage 3 is bent to the side of the button 2 and located at the left actuated end Between 222b and the right actuated end 222a, when the button 2 is pressed to perform the closing operation to the inside of the circuit breaker, the inclined surface of the left actuated end 222b is resisted by the driving part 33 of the linkage and rotates counterclockwise. At this time, the observation window 212 The closing logo of the corresponding color of the indicator on the display end face 223 is displayed. The corresponding opening and closing state is displayed by the color of the color block moved into the observation window 212 . The solution has a simple structure and can be combined with it to simplify the unlocking structure. When the push button 2 is pulled to perform the opening operation, the right actuated end 222a of the indicating member acts on the right side of the linkage member driving part 33 of the linkage member 3, and the linkage member 3 is forced to rotate clockwise around the axis to make the linkage member 3 move clockwise. The contacting boss 31 is retracted into the housing, and the indicator 22 rotates clockwise. At this time, the opening logo of the corresponding color of the indicator on the display end face 223 can be displayed in the observation window 212. At this time, the unlocking part 34 of the linkage 3 and the locking part 4 Just contacting or leaving a gap, the locking boss 41 of the locking member 4 remains protruding out of the housing 6 .

As shown in Fig. 8, in the open state, when the circuit breaker needs to be removed from the installation cabinet, continue to pull the button mechanism away from the circuit breaker, and the right actuated end 222a of the indicator acts on the linkage of linkage 3 to drive On the right side of the part 33, the linkage 3 is forced to rotate clockwise around the shaft, the unlocking part 34 acts on the linkage part 43 of the locking part 4, and the locking boss 41 overcomes the thrust of the spring 10 to slide and retract the circuit breaker Inside the device, the lock between the locking boss 41 and the cabinet is released, and the circuit breaker can be removed from the working position. A direct and fixed correspondence is formed between the stand 41 and the extended position/retracted position of the interference boss 31, so that the operator can intuitively grasp the current safe state of the circuit breaker. Second, it provides the possibility of extending/retracting the interference boss 31 and the locking boss 41 on the locking member 4 from the same common limiting hole 61, which can reduce the manufacturing difficulty of inserting the receptor, and is convenient for circuit breaker products. Interchangeable and universal with insertion receptors to reduce the cost of use for users. Third, the structure is simple and the number of parts is small, which provides effective support for miniaturization and low-cost manufacture of circuit breaker products.

Preferably, the interference boss 31 is a square boss, the sides on both sides of the square boss are perpendicular to the installation and insertion direction of the circuit breaker, and the sides on both sides of the interference boss 31 are the left contour surface 31a and the right contour surface 31b, when the abutting boss 31 is in the extended position, the left contour surface 31a and the right contour surface 31b are respectively perpendicular to the side walls of the limiting hole 61, that is, perpendicular to the installation and insertion direction of the circuit breaker, and the left contour surface 31a is in the circuit breaker. The circuit breaker is prevented from being pulled out from the cabinet in the direction in which the circuit breaker is pulled out from the cabinet, and the right contour face 31b prevents the circuit breaker from being inserted into the cabinet in the direction in which the circuit breaker is inserted into the cabinet, wherein the right contour face 31b is inserted into the receiver. The lateral end face of the cabinet sheet metal B1 interferes and fits to prevent the insertion of the circuit breaker, and the left contour surface 31a interferes with a hole wall surface B2 of the limiting hole B0 of the cabinet sheet metal part inserted into the receiver. The beneficial effect is that it can effectively reduce the insertion of the receiver The deformation under force can effectively relax the adaptation tolerance of the insertion receptor, so as to effectively facilitate the use and reduce the use cost. Preferably, the side of the actuated boss 32 close to the button 2 is an inclined surface.

Specifically, as shown in FIG. 1 in the preferred embodiment of the plug-in circuit breaker of the present invention, the button mechanism includes a button 2, a connecting rod 7 and a driving member 5, and the button 2 drives the driving member 5 to rotate through the connecting rod 7, The driving member 5 drives the operating mechanism 9 to perform closing/opening through the connecting rod 8, and the button mechanism and the driving member 5 respectively have the closing position and the opening position corresponding to the closing/opening of the circuit breaker, that is: In the closed state, the button mechanism and the driving member 5 respectively have a certain position (closing position), and in the opening state, the button mechanism and the driving member 5 also have a certain position (opening position) respectively; the closing position The opening/opening position corresponds to the closing/opening of the movable contact 9a and the stationary contact 9b.

The housing 6 is provided with a limiting hole 61 , the locking member 4 is slidably arranged at a position corresponding to the driving member 5 , between the driving member 5 and the limiting hole 61 , and the linkage member 3 is rotatably arranged on the button 2 Between the limit hole 61 and the linkage member 3, the linkage member 3 is arranged on the left side of the locking member 4, above the button mechanism.

A beneficial feature of the present invention is that when the button mechanism is in the closing position, the linkage 3 is restricted to the extended position by the button mechanism and cannot be retracted to the retracted position. The beneficial effect of this structure is that the closing can be reliably prevented. Plug and pull, that is, to prevent the circuit breaker from being forcibly plugged and unplugged in the closed state; due to the feature that the structure cannot be returned to the retracted position, the ability of the circuit breaker product to resist abnormal brute force plug and pull is effectively enhanced. When the button mechanism is in the opening position, there are various technical solutions for the position of the linkage member 3 . One of the optional solutions is that the linkage member 3 is not restricted by the button mechanism and can be converted between the extended position and the retracted position, which has the advantage of simple structure. Another optional solution, which is also the preferred solution of the present invention, is that when the button mechanism is in the opening position, the linkage member 3 is restricted by the button mechanism and is in the retracted position, which has the advantage that it can directly It is avoided that the linkage 3 brings resistance to the normal plugging and unplugging of the circuit breaker. Another advantage of the device of the present invention is that the linkage member 3 is used as the unlocking member, the structure of the unlocking mechanism can be simplified, the number of parts can be reduced, and the linkage member 3 and the driving locking member 4 can be retracted at the same time, so that the linkage member 3 and the driving locking member 4 can be retracted at the same time. The locking member 4 does not produce any resistance to the normal insertion and removal of the circuit breaker.

Another beneficial feature of the present invention is that when the circuit breaker is in the open state, the locking boss 41 of the locking member 4 protrudes out of the housing 6, but when it is retracted by an external force (only horizontal When the force is applied, the locking piece 4 will not be retracted, and a vertical component force in the retracting direction is required), and it can be pushed back into the housing 6 by the external force of retraction, that is, it does not prevent the circuit breaker from being inserted into the cabinet in the open state, and It can protect the circuit breaker from falling out of the cabinet due to vibration during transportation. Another beneficial feature of the present invention is that when the button mechanism is in the opening position, when the locking boss 41 of the locking member 4 is retracted into the housing, the locking member 4 resists the driving member 5 so that the driving member 5 It cannot be rotated, preventing the button mechanism from switching from the opening position to the closing position, so that the circuit breaker cannot be closed. Another beneficial feature of the present invention is that when the button mechanism is in the closing position, the locking member 4 is restricted by the driving member 5 to the extended position and cannot be retracted to the retracted position. It prevents the circuit breaker from being forcibly pulled out in the closed state. Due to the feature that the structure cannot be returned to the retracted position, the ability of the circuit breaker product to resist abnormal brute force pulling out is effectively enhanced.

The locking member 4 of the present invention has the following beneficial effects: First, since the locking member 4 moves linearly perpendicular to the installation and insertion direction A, it can effectively prevent or reduce the force on the locking member 4 and the cabinet sheet metal part inserted into the receiver. Deformation and/or micro-displacement. Second, when the driving member 5 is in the closing position, the direction of the force acting on the locking member 4 by the outer side surface 52 is substantially parallel to the direction of its linear movement, so it is difficult for the locking member 4 to retreat to the retracted position by pulling out brute force. Third, since the chute-slider pair can provide a great restraint force in the direction perpendicular to the linear movement, the cooperation of the outrigger column 42 and the step 51 can provide the driving member 5 with a great resistance to closing The binding force can effectively ensure that the circuit breaker is not accidentally closed during the plug-in operation.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deductions or substitutions can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (11)

1. A plug-in circuit breaker, includes casing (6), button mechanism and operating device (9), and button mechanism includes button (2), and button (2) include button (21), and button mechanism drive operating device (9) carry out closing/separating brake, its characterized in that: the circuit breaker further comprises a linkage piece (3) arranged in the shell (6), wherein the linkage piece (3) is provided with a collision boss (31); when button (2) drive circuit breaker combined floodgate, conflict boss (31) of button mechanism drive linkage (3) stretch out outside casing (6), and button mechanism is spacing to linkage (3) make conflict boss (31) can not return in the casing, and when button (2) drive circuit breaker open brake, conflict boss (31) of linkage (3) return in the casing.

2. Plug-in circuit breaker according to claim 1, characterized in that: the button (2) further comprises an indicating piece (22) which is arranged in the button piece (21) and used for indicating the closing/opening state of the circuit breaker, when the button (2) drives the circuit breaker to open, the indicating piece (22) acts to indicate opening, and the linkage piece (3) is driven to enable the abutting lug boss (31) to return to the shell (6).

3. Plug-in circuit breaker according to claim 2, characterized in that: when the button (2) drives the breaker to be switched on, the indicating piece (22) acts to indicate the switch-on, and the abutting lug boss (31) of the driving linkage piece (3) extends out of the shell (6).

4. Plug-in circuit breaker according to claim 1, characterized in that: when the button (2) drives the breaker to be switched on, the button (2) drives the abutting lug boss (31) of the linkage piece (3) to extend out of the shell (6).

5. Plug-in circuit breaker according to claim 2, characterized in that: the linkage piece (3) is rotatably arranged on the shell (6), one end of the linkage piece is provided with a contact boss (31), and the other end of the linkage piece is provided with a linkage piece driving part (33) extending towards the button (2);

the indicating piece (22) comprises a rotating shaft (221), a display end surface (223) and a driving boss (222), an indicating part used as a switching-on and switching-off mark is arranged on the display end surface (223), a cavity type mounting hole (211) is arranged inside the button piece (21), and an observation window (212) communicated with the mounting hole (211) is arranged on the operation end surface of the button piece (21);

the indicating piece (22) is arranged in the mounting hole (211) of the button piece (21) through a rotating shaft (221) and can swing around the shaft, the swinging drives the indicating part on the display end surface (223) to move under the observation window (212), and the corresponding opening and closing state is displayed through the indicating part moving into the observation window (212);

when the button (2) moves into the shell (6) to drive the breaker to be switched on, the driving boss (222) of the indicating piece (22) is matched with the linkage piece driving part (33) of the linkage piece (3) to enable the indicating piece (22) to rotate, and the area, corresponding to the switching-on state, of the indicating part on the display end surface (223) corresponds to the observation window (212);

when the button (2) moves towards the outside of the shell (6) to drive the breaker to be opened, the driving boss (222) of the indicating piece (22) is matched with the linkage piece driving part (33), the indicating piece (22) rotates to enable the area, corresponding to the opening state, of the indicating part on the display end face (223) to correspond to the observation window (212), and the driving boss (222) drives the linkage piece (3) to rotate through the linkage piece driving part (33) to enable the abutting boss (31) of the linkage piece (3) to return into the shell.

6. Plug-in circuit breaker according to claim 5, characterized in that: when the button (2) moves into the shell (6) to drive the breaker to be switched on, the driving boss (222) of the indicating piece (22) is matched with the linkage piece driving part (33) of the linkage piece (3) to enable the indicating piece (22) to rotate and enable the linkage piece (3) to rotate, and the abutting boss (31) of the linkage piece (3) extends out of the shell (6).

7. Plug-in circuit breaker according to claim 2, characterized in that: the circuit breaker is characterized by further comprising a locking piece (4), wherein the locking piece (4) is installed in the shell (6) through an elastic piece, the locking piece (4) is provided with a locking boss (41), and when the circuit breaker is in a switching-off state, the elastic piece enables the locking boss (41) of the locking piece (4) to extend out of the shell (6);

be equipped with on linkage (3) and locking piece (4) complex unblock portion (34), after the circuit breaker separating brake, when button (2) moved outside casing (6), indicator (22) drive linkage (3) and rotate, and the unblock portion (34) of linkage (3) make locking boss (41) withdraw to in casing (6) the application of force to locking piece (4).

8. Plug-in circuit breaker according to claim 5, characterized in that: the driving boss (222) is provided with a left driven end (222b) and a right driven end (222a) at intervals, a linkage piece driving part (33) of the linkage piece (3) is bent towards one side of the button (2) and is located between the left driven end (222b) and the right driven end (222a), when the button (2) moves towards the shell (6) to drive the breaker to be switched on, the left driven end (222b) is matched with the linkage piece driving part (33) of the linkage piece (3), and when the button (2) moves towards the outside of the shell (6), the right driven end (222a) is matched with the linkage piece driving part (33) of the linkage piece (3).

9. Plug-in circuit breaker according to claim 7, characterized in that: the button mechanism comprises a button (2), a connecting rod (7) and a driving piece (5), the button (2) drives the driving piece (5) to act through the connecting rod (7), and the driving piece (5) is rotatably arranged in the shell (6) and is connected with the operating mechanism (9); locking piece (4) are installed in casing (6) through the rectilinear movement pair, and the direction perpendicular to circuit breaker's of its rectilinear movement installation direction of inserting, locking piece (4) are including stretching post (42) outward, and when the circuit breaker was in the combined floodgate state, the elastic component made locking boss (41) of locking piece (4) stretch out outside casing (6), and lateral surface (52) of driving piece (5) and outer post (42) of stretching of locking piece (4) support the cooperation and make locking piece (4) can not return to in casing (6).

10. Plug-in circuit breaker according to claim 7, characterized in that: the shell (6) is provided with a limiting hole (61), and the abutting lug boss (31) of the linkage piece (3) and the locking lug boss (41) of the locking piece (4) are matched with the same limiting hole (61).

11. Plug-in circuit breaker according to claim 1, characterized in that: conflict boss (31) are square boss, and the side of square boss both sides all is perpendicular to the installation of circuit breaker and inserts the direction.

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