CN207624634U - A kind of fixation of plug in circuit breaker and unlocking mechanism - Google Patents

Abstract

A kind of fixation of plug in circuit breaker and unlocking mechanism, including shell (1), button (2) is in the button slot (101) of the shell (1), it is characterised in that：Locking mechanism (3) is equipped in the shell (1) can make plug in circuit breaker that can not be extracted from installation cabinet, and unlocking mechanism (4) is additionally provided in the shell (1) and can be unlocked to locking mechanism (3) makes plug in circuit breaker be extracted from installation cabinet.The fixation of the plug in circuit breaker and unlocking mechanism, by adding fixed and unlocking mechanism in breaker, what realization breaker was smoothly stablized is installed in cabinet, and by shell, the positions such as conducting wire, breaker cannot take out from cabinet；After breaker disconnects, pulling out button can unlock breaker from cabinet, and breaker can easily be taken out from cabinet by pulling on button, improve the security performance that breaker uses.

Description

A fixing and unlocking mechanism of a plug-in circuit breaker

technical field

The utility model belongs to the technical field of circuit breakers, and in particular relates to a fixing and unlocking mechanism of a plug-in circuit breaker.

Background technique

Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. Low-voltage circuit breaker, also known as automatic switch, is an electrical appliance that not only has the function of manual switch, but also can automatically protect against voltage loss, undervoltage, overload and short circuit. It can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, etc., and can automatically cut off the circuit when they have severe overload, short circuit and undervoltage faults. Its function is equivalent to a fuse switch and The combination of overheating and underheating relays, etc., and generally does not need to change parts after breaking the fault current, has been widely used.

Circuit breakers are divided according to installation methods: plug-in type, fixed type and drawer type. The use of plug-in type circuit breakers can effectively improve the safety of the electrical equipment industry. In order to meet the installation needs of various electrical equipment, the structure of the plug-in circuit breaker has also developed into various types. At present, in the layout of the existing traditional plug-in circuit breaker products in the installation position, shrapnel is generally used to insert the plug-in circuit breaker. Locked in the cabinet, if you need to unlock and take out the circuit breaker from the cabinet, you need to rely on external force or additional tools, which is inconvenient to operate. At the same time, when taking out the plug-in circuit breaker, it has nothing to do with the on-off state of the circuit breaker. When taking out the circuit breaker in the closed state of the circuit breaker , prone to safety accidents.

Utility model content

The purpose of this utility model is to provide a fixing and unlocking mechanism for a plug-in circuit breaker to solve the technical defects that the above-mentioned existing plug-in circuit breaker needs to be locked by an external device during installation, resulting in inconvenient operation and prone to safety accidents. A fixing and unlocking mechanism is added in the circuit breaker to realize the smooth and stable installation of the circuit breaker in the cabinet. After the circuit breaker is disconnected, the circuit breaker can be unlocked from the cabinet by pulling the button outward, and the circuit breaker can be easily taken out of the cabinet by continuing to pull the button , Improve the safety performance of the circuit breaker.

Technical solutions

In order to achieve the above technical purpose, a fixing and unlocking mechanism of a plug-in circuit breaker designed by the utility model includes a casing, and the button is installed in the button groove of the casing. The plug-in circuit breaker cannot be pulled out from the installation cabinet, and an unlocking mechanism is also provided in the housing to unlock the locking mechanism so that the plug-in circuit breaker can be pulled out from the installation cabinet.

Further, the locking mechanism includes a fastener, and the right end of the fastener is provided with a cylinder, and the cylinder is installed in an arc-shaped groove on the inner wall of the housing, and the torsion spring is mounted on the housing, and the torsion spring is One end of the fastener rests on the lower surface of the fastener, a locking boss 1 is provided on the upper side of the fastener, and a limiting slot 1 corresponding to the locking boss 1 is provided on the outer shell.

Further, the unlocking mechanism includes a tripping part, the tripping part is installed on the inner wall of the housing through the shaft and can rotate around the shaft, the right side of the tripping part is provided with a tripping boss 1, and the tripping The buckle boss is buckled on the unbuckle linkage step at the left end of the fastener, and the left end of the unbuckle is provided with an unbuckle block 1, and the unbuckle block 1 is connected with the driving protrusion on the button. One corresponds.

Further, the locking mechanism and the unlocking mechanism are integrated, including a locking and unlocking part, the locking and unlocking part is installed on the inner wall of the housing through the shaft 2 and can rotate around the shaft 2, and the upper right end of the locking and unlocking part is set There is a locking boss 2, the housing is provided with a limit slot 2 corresponding to the locking boss 2, the torsion spring 2 is mounted on the housing, and one end of the torsion spring 2 rests on the right side of the shaft 2 On the lower surface of the lock and release part, the left end of the lock and release part is provided with a trip block 2, and the trip block 2 corresponds to the driving protrusion 2 on the button.

Further, a chamfer is provided on the upper right side of the locking boss.

Further, the upper right side of the locking boss 2 is provided with a chamfer.

Further, the torsion spring rides on the stepped surface of the lower part of the fastener.

Further, the torsion spring 2 rests on the step surface 2 of the lower part of the lock and release member.

Further, a limit block is provided on the lower end surface of the locking and unlocking member.

Beneficial effect

The utility model provides a fixing and unlocking mechanism for a plug-in circuit breaker. By adding a fixing and unlocking mechanism in the circuit breaker, the circuit breaker can be installed in the cabinet smoothly and stably. Take it out of the cabinet; after the circuit breaker is disconnected, pull the button outward to unlock the circuit breaker from the cabinet, and continue to pull the button to easily remove the circuit breaker from the cabinet, which improves the safety performance of the circuit breaker.

Description of drawings

Accompanying drawing 1 is the structural representation of the button in the utility model embodiment 1.

Accompanying drawing 2 is the structure diagram of the fastener in the utility model embodiment 1.

Accompanying drawing 3 is the schematic diagram of the position and structure of the step surface 1 in the utility model embodiment 1.

Accompanying drawing 4 is the schematic structural diagram of the unlocking part in Embodiment 1 of the present utility model.

Accompanying drawing 5 is the installation structure diagram of torsion spring in the utility model embodiment 1.

Accompanying drawing 6 is a structural schematic diagram of fasteners being pressed into the casing when the circuit breaker is inserted into the cabinet in Embodiment 1 of the present utility model.

Accompanying drawing 7 is the structural diagram of the circuit breaker stably installed in the cabinet in Embodiment 1 of the present utility model.

Accompanying drawing 8 is the structural schematic diagram of pulling out the circuit breaker from the cabinet in Embodiment 1 of the present utility model.

Accompanying drawing 9 is the structural diagram when the circuit breaker is inserted into the cabinet in Embodiment 2 of the present utility model.

Accompanying drawing 10 is the structural diagram of the circuit breaker stably installed in the cabinet when it is disconnected in Embodiment 2 of the utility model.

Accompanying drawing 11 is the structural schematic diagram of the circuit breaker being stably installed in the cabinet when it is closed in Embodiment 2 of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is described further.

A fixing and unlocking mechanism for a plug-in circuit breaker, comprising a casing 1, a button 2 installed in a button groove 101 of the casing 1, and a locking mechanism 3 is provided in the casing 1 to prevent the plug-in circuit breaker from being installed in the cabinet. The housing 1 is also provided with an unlocking mechanism 4 capable of unlocking the locking mechanism 3 so that the plug-in circuit breaker can be pulled out from the installation cabinet.

Example 1

In a specific embodiment provided by the present utility model, as shown in Figures 2 and 3, the locking mechanism 3 includes a fastener 301, the right end of the fastener 301 is provided with a cylinder 301a, and the cylinder 301a is mounted on the In the arc-shaped groove 102 on the inner wall of the housing 1, as shown in Figure 5, a torsion spring 5 is mounted on the housing 1, one end of the torsion spring 5 rests on the housing 1, and the other end rests on the housing 1. The lower surface of the fastener 301 , in this embodiment, the torsion spring 5 rides on the stepped surface 301d of the lower part of the fastener 301 . A locking boss 301b is provided on the upper side of the fastener 301, and a chamfer is provided on the upper right side of the locking boss 301b. The shell 1 is provided with a limiting slot 103 corresponding to the locking boss 1 301b.

As shown in Figure 4, the unlocking mechanism 4 includes a tripping part 401, the tripping part 401 is installed on the inner wall of the housing 1 through the shaft one 402 and can rotate around the shaft one 402, and the right side of the tripping part 401 The end is provided with an unbuckle boss 401a, and the unbuckle boss 401a is buckled on the unbuckle linkage step 301c at the left end of the fastener 301, and the left end of the unbuckle 401 is provided with an unbuckle block A 403, the tripping block 1 403 corresponds to the driving projection 1 201 on the button 2 as shown in FIG. 1 .

As shown in Figure 6, when the circuit breaker is installed into the cabinet, the locking boss 301b of the fastener 301 is pressed down by the cabinet, and the fastener 301 rotates counterclockwise around the right column 301a against the torsion spring 5 , the circuit breaker can be smoothly installed into the cabinet. As shown in Figure 7, the circuit breaker is stably installed in the cabinet, and the cabinet no longer presses the locking boss 301b of the fastener 301, and the fastener 301 rotates clockwise under the action of the torsion spring 1 to reset, and the locking boss 1 301b protrudes from the casing 1 from the limit slot 103, and the locking boss 301b locks the circuit breaker in the cabinet so that it cannot be pulled out; press button 2 and the circuit breaker can be switched on, and button 2 can be pulled out to open the circuit breaker , from other parts of the circuit breaker except button 2, the circuit breaker cannot be taken out of the cabinet.

As shown in accompanying drawing 8, after pulling the button 2 to a certain position, continue to pull the button 2, the driving protrusion 201 on the upper right side of the button 2 acts on the tripping block 1 403 on the left side of the tripping part 401, and the tripping part 401 Rotate clockwise around the shaft 1 402, the unbuckle linkage step 301c of the buckle 301 is affected by the unbuckle boss 401a on the right side of the unbuckle 401, and the buckle 301 of the buckle 3 overcomes the reaction force of the torsion spring 15 to go around The right cylinder 301a rotates counterclockwise, and the locking boss 1 301b moves down to a certain position, and is lower than the surface of the circuit breaker shell 1, the circuit breaker is unlocked from the cabinet, and the circuit breaker can be easily pulled out from the cabinet.

Example 2

In yet another specific embodiment of the present utility model, as shown in Figures 9 and 10, the locking mechanism 3 and the unlocking mechanism 4 are integrated, including a locking and unlocking member 6, and the locking and unlocking member 6 passes through a shaft The second 601 is installed on the inner wall of the housing 1 and can rotate around the second shaft 601. The upper right side of the locking and unlocking part 6 is provided with a locking boss 2 602, and the upper right side of the locking boss 2 602 is provided with a chamfer. The housing 1 is provided with a limiting slot 2 104 corresponding to the locking boss 2 602, the torsion spring 2 7 is mounted on the housing 1, one end of the torsion spring 7 rests on the housing 1, and the other end It rests on the lower surface of the locking and releasing member 6 on the right side of the shaft 2 601 . In this embodiment, the torsion spring 2 7 rests on the stepped surface 2 604 of the lower part of the locking and releasing member 6 . A trip block 2 603 is provided at the left end of the locking and tripping member 6 , and the trip block 2 603 corresponds to the driving protrusion 2 202 on the button 2 . A limiting block 605 is provided on the lower end surface of the locking and unlocking member 6 .

When the circuit breaker is in the disconnected state, when the circuit breaker is inserted into the cabinet, the locking boss 2 602 on the right side of the locking and releasing part 6 is pressed down by the cabinet plate, and the locking and releasing part 6 overcomes the reaction force of the torsion spring 27 and rotates clockwise. The circuit breaker can be smoothly installed into the cabinet. After the circuit breaker is installed in the cabinet, since the locking boss 2 602 is no longer pressed by the cabinet, and the torsion spring 2 7 rotates counterclockwise, the locking boss 2 602 protrudes from the upper part of the casing, and the locking boss 2 602 locks the circuit breaker in the Without being pulled out from the cabinet, press the button 2 to close the circuit breaker, and pull out the button 2 to open the circuit breaker. After the button 2 is pulled outward to a certain position, the driving protrusion 2 202 on the upper right side of the button 2 acts on the unlocking block 2 603 on the left side of the locking and unlocking part 6, and the locking and unlocking part 6 overcomes the torsion spring under the action of the button 2 The reaction force of II 7 rotates clockwise around the axis II 601, and the locking boss II 602 moves down to a certain position, and is lower than the surface of the circuit breaker shell, the circuit breaker is unlocked from the cabinet, and the circuit breaker can be easily pulled out from the cabinet .

When the circuit breaker is in the closed state, the limit block 605 set on the lower end surface on the right side of the locking and unlocking part 6 is against the button 2, so that the locking boss 2 602 cannot move downward, and the circuit breaker cannot be inserted into the cabinet; as shown in Figure 11 As shown, when the circuit breaker is in the cabinet, when the circuit breaker is pulled through other parts except the button 2, the locking boss 2 602 on the upper right side of the locking and releasing part 6 is under the pressure of the cabinet, and the locking and releasing part 6 should be clockwise. Rotate, because the limit block 605 is arranged below the locking and unlocking part 6, the limit block 605 is against the button 2, so that the locking boss 2 602 cannot move downward, and the circuit breaker cannot be taken out from the cabinet.

The structures, proportions, sizes, quantities, etc. shown in the accompanying drawings of this embodiment are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the utility model. Therefore, it has no technical substantive meaning, and any modification of structure, change of proportional relationship or adjustment of size should still fall into place without affecting the effect and the purpose that the utility model can produce and achieve. within the scope covered by the technical content disclosed in the utility model. At the same time, terms such as "upper", "lower", "left", "right", "middle", "clockwise", and "counterclockwise" quoted in this specification are only for the convenience of description. It is not intended to limit the applicable scope of the present utility model, and the change or adjustment of its relative relationship shall also be regarded as the applicable scope of the present utility model without substantial change in the technical content.

Claims (9)

1. fixation and the unlocking mechanism of a kind of plug in circuit breaker, including shell (1), button (2) is pressed mounted in the shell (1) In button slot (101), it is characterised in that：Locking mechanism (3) is equipped in the shell (1) can make plug in circuit breaker can not be from peace It is extracted in installation cabinet, unlocking mechanism (4) is additionally provided in the shell (1) and can be unlocked to locking mechanism (3) keeps plug-in type breaking Device is extracted from installation cabinet.

2. fixation and the unlocking mechanism of a kind of plug in circuit breaker as described in claim 1, it is characterised in that：The locking machine Structure (3) includes fastener (301), and the right end of the fastener (301) is equipped with cylinder (301a), and the cylinder (301a) is mounted in described outer In arc-shaped slot (102) on shell (1) inner wall, for torsional spring one (5) on shell (1), one end of the torsional spring one (5) rides over institute The lower surface of fastener (301) is stated, fastener (301) upper side is equipped with locking boss one (301b), is set on the shell (1) There is spacing slotted eye one (103) corresponding with locking boss one (301b).

3. fixation and the unlocking mechanism of a kind of plug in circuit breaker as described in claim 1, it is characterised in that：The solution lock machine Structure (4) includes unfastening fastener (401), and the unfastening fastener (401) can be around axis one on shell (1) inner wall by axis one (402) (402) it rotates, the right-hand end of the unfastening fastener (401), which is equipped with, unbuttons boss one (401a), and the boss one (401a) of unbuttoning is taken It is buckled in unbuttoning on linkage step (301c) for the fastener (301) left end, the left-hand end of the unfastening fastener (401) is equipped with solution button block One (403), the solution button block one (403) are corresponding with the driving protrusion one (201) on the button (2).

4. fixation and the unlocking mechanism of a kind of plug in circuit breaker as described in claim 1, it is characterised in that：The locking machine Structure (3) and unlocking mechanism (4) are integral type, including locking unfastening fastener (6), and the locking unfastening fastener (6) is filled by axis two (601) It can be rotated around axis two (601) on shell (1) inner wall, the right side upper end of the locking unfastening fastener (6) is equipped with locking boss two (602), the shell (1) is equipped with spacing slotted eye two (104) corresponding with the locking boss two (602), torsional spring two (7) dress On shell (1), one end of the torsional spring two (7) rides over the lower surface of the locking unfastening fastener (6) on the right of the axis two (601) On, locking unfastening fastener (6) left-hand end, which is equipped with, solves button block two (603), on the solution button block two (603) and the button (2) Driving protrusion two (202) it is corresponding.

5. fixation and the unlocking mechanism of a kind of plug in circuit breaker as claimed in claim 2, it is characterised in that：The lock tab Right side is equipped with chamfering on platform one (301b).

6. fixation and the unlocking mechanism of a kind of plug in circuit breaker as claimed in claim 4, it is characterised in that：The lock tab Right side is equipped with chamfering on platform two (602).

7. fixation and the unlocking mechanism of a kind of plug in circuit breaker as claimed in claim 2, it is characterised in that：The torsional spring one (5) it rides on the step surface one (301d) of the lower part of the fastener (301).

8. fixation and the unlocking mechanism of a kind of plug in circuit breaker as claimed in claim 4, it is characterised in that：The torsional spring two (7) on the step surface two (604) for riding over the lower part of the locking unfastening fastener (6).

9. fixation and the unlocking mechanism of a kind of plug in circuit breaker as claimed in claim 4, it is characterised in that：The locking solution The lower face of fastener (6) is equipped with limited block (605).