Circuit breaker with indication structure

Abstract

A circuit breaker with an indication structure comprises a front shell and a rear shell which are spliced with each other, the front shell and the rear shell are provided with mounting holes used for arranging screws, and the front shell is internally provided with a rotatable handle assembly, a transmission assembly driven by the handle assembly and capable of moving, a first wiring terminal and a second wiring terminal. The transmission assembly is provided with a long moving piece with a moving contact, the first wiring terminal and the second wiring terminal are both provided with static contacts matched with the moving contact, a swinging piece capable of swinging is arranged in the front shell, and the swinging piece is connected with the transmission assembly so that swinging can be achieved through movement of the transmission assembly. A blind groove is formed in the shell wall, close to the swing piece, of the front shell and the shell wall, close to the swing piece, of the rear shell, and an indicating piece which can stretch out under extrusion and partially penetrates through the blind groove to abut against the swing piece is arranged in the blind groove. The indicating piece is partially exposed out of the blind groove when the circuit breaker is in an opening state through swinging of the swinging piece, and is not exposed out of the blind groove when the circuit breaker is in a closing state.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker with an indicating structure. Background Art

[0002] A circuit breaker is a switching device that can close, carry and interrupt current under normal circuit conditions and can close, carry and interrupt current under abnormal circuit conditions within a specified time. It is generally composed of a contact system, an arc extinguishing system, an operating mechanism, a release, a housing, etc. When a short circuit occurs, the magnetic field generated by the large current, which is generally 10 to 12 times the current, overcomes the reaction spring, and the release pulls the operating mechanism to operate, causing the switch to trip instantly; when overloaded, the current becomes larger, the heat generation increases, and the bimetallic strip deforms to a certain extent to drive the mechanism to operate. The larger the current, the shorter the operation time.

[0003] Publication (Announcement) No.: CN214797291U discloses a new type of small circuit breaker assembly, including a front shell and a rear shell connected as one body, the front shell and the rear shell are provided with mounting holes, the front shell has a handle assembly, a transmission mechanism, a first terminal and a second terminal, the handle assembly includes a handle body and a handle connector, the handle body and the handle connector are formed as one body, the handle connector is arranged between the front shell and the rear shell, and a movable through groove for cooperating with the rotation of the handle body is provided between the front shell and the rear shell; the transmission mechanism includes a transmission rod and an indicator, one end of the transmission rod is connected to the handle connector, and the other end is connected to the indicator; a long moving piece is provided on the transmission rod, a moving contact is provided on the long moving piece, and a static contact matching the moving contact is provided on the first terminal and the second terminal. This circuit breaker has an indicator that prompts the user when the circuit breaker is in the closed state or the open state. The indicator is distinguished by different colors, that is, the indicator shows green when the circuit breaker is in the open state, and the indicator shows red when the circuit breaker is in the closed state. Although this method has a certain indication performance, it has defects, that is, the indicator is located in the front shell and the rear shell, and a narrow space is required as a visual space to observe whether the circuit breaker is in the closed state or the open state. The indicator is provided with a color (partly using text) prompt. This observation method requires the user to get close to observe. Moreover, both methods have conditional limitations, that is, it is very unfriendly to users with color recognition defects and older users. Users with color recognition defects cannot recognize colors, so users cannot know the status of the circuit breaker through color prompts. Older users have presbyopia, and their eye lenses cannot focus. Even with reading glasses, it is very difficult to observe. Therefore, this method cannot clearly and directly provide users with prompts. Utility Model Content

[0004] The present invention aims to solve the above-mentioned shortcomings of the prior art and provides a circuit breaker with an indicator structure to solve the above-mentioned problems.

[0005] The utility model adopts a technical solution to solve its technical problems: this circuit breaker with an indicating structure includes a front shell and a rear shell that are assembled with each other, the front shell and the rear shell are provided with mounting holes for setting screws, the front shell is provided with a rotatable handle assembly, a transmission assembly driven and movable by the handle assembly, a first terminal, and a second terminal, the transmission assembly is provided with a long moving piece with a moving contact, the first terminal and the second terminal are both provided with a static contact matching the moving contact, a swingable swinging piece is provided in the front shell, the swinging piece is connected to the transmission assembly so as to swing through the movement of the transmission assembly, a blind groove is provided on the shell wall of the front shell near the swinging piece, an indicating piece is provided in the blind groove, which can be squeezed to extend out and partially pass through the blind groove to abut against the swinging piece, and the indicating piece is partially exposed outside the blind groove when the circuit breaker is in the open state due to the swing of the swinging piece, and is not exposed outside the blind groove when the circuit breaker is in the closed state.

[0006] Further improvement, the swing part includes a sleeve, a connecting rod, and a push rod. The sleeve is rotatably set on the shaft seat on the front shell. The connecting rod and the push rod are both set on the outer peripheral surface of the sleeve and form an angle A, A = 140°. The connecting rod is connected to the transmission assembly, and the push rod is used to squeeze the indicator.

[0007] Further improvement, the connecting rod and the top rod are staggered in the front and back.

[0008] For further improvement, an abutment block is provided at the end of the push rod that is not connected to the shaft sleeve, and the indicator is always in abutment with the abutment block.

[0009] To be further improved, the indicator includes a lifting rod, an indicating block, and a spring. The lifting rod moves in a through hole formed on the blind groove and is always in contact with the abutment block. Part of the lifting rod is located in the blind groove and part is located in the front shell. The indicating block is arranged at the end of the lifting rod that is not in contact with the abutment block and is placed in the blind groove. It is exposed or not exposed outside the blind groove when the circuit breaker is in the open state or the closed state. The spring is placed in the blind groove and is mounted on the part of the lifting rod located in the blind groove, and one end is fixed to the indicating block and the other end is fixed to the bottom surface of the blind groove.

[0010] For further improvement, a stop block is threadedly connected to the portion of the lifting rod located inside the front housing, and the stop block can abut against the shell wall of the front housing when the circuit breaker is in the open state.

[0011] The beneficial effects of the utility model are:

[0012] The utility model utilizes the swing of the swing member to drive the indicator member to be exposed or not exposed outside the blind slot. Such a prompt effect can give the user a clearer and more direct prompt, and there is no need to determine whether the circuit breaker is in the open or closed state by distinguishing colors or texts as in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the present invention, in which the rear housing is hidden;

[0015] Figure 3 This is a partial cross-sectional structural diagram of the present invention, used to show the state where the indicator is exposed outside the blind groove;

[0016] Figure 4 For this utility model Figure 3 A partial enlarged schematic diagram of part A;

[0017] Figure 5 This is a partial cross-sectional structural diagram of the present invention, used to show the state where the indicator is not exposed outside the blind groove. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Referring to the accompanying drawings: This circuit breaker with an indicator structure includes a front housing 1 and a rear housing 2 that are assembled together. The front housing 1 and the rear housing 2 are provided with mounting holes 3 for setting screws. The front housing 1 has a rotatable handle assembly 4, a transmission assembly 5 that is driven and movable by the handle assembly 4, a first terminal 6, and a second terminal 7. The transmission assembly 5 is provided with a long movable piece 51 with a movable contact 8. The first terminal 6 and the second terminal 7 are both provided with a static contact 9 that matches the movable contact 8. A swingable swing member 10 is disposed within the front housing 1. The swing member 10 is connected to the transmission assembly 5 so as to swing as the transmission assembly 5 moves. A blind slot 20 is disposed on the housing wall of the front housing 1 near the swing member 10. An indicator member 30 is disposed within the blind slot 20, which is squeezed and extended to partially pass through the blind slot 20 and abut against the swing member 10. The indicator member 30 is partially exposed outside the blind slot 20 when the circuit breaker is in the open state due to the swinging of the swing member 10, and is not exposed outside the blind slot 20 when the circuit breaker is in the closed state. The principle of the present invention is to use the swinging of the swing member 10 to drive the indicator member 30 to be exposed or not exposed outside the blind slot 20. This prompt effect can provide a clearer and more direct user prompt, eliminating the need to distinguish between colors (which is not user-friendly for users with color blindness) or text (which is not user-friendly for users with presbyopia) to determine whether the circuit breaker is in the open or closed state, as in the prior art. The specific structure and coordination of the handle assembly 4 and the transmission assembly 5 are all prior art and will not be described in detail.

[0020] The swing member 10 includes a sleeve 101, a connecting rod 102, and a push rod 103. The sleeve 101 is rotatably arranged on the shaft seat on the front housing 1. The connecting rod 102 and the push rod 103 are both arranged on the outer circumference of the sleeve 101 and form an angle A, A = 140 degrees. The connecting rod 102 is connected to the transmission component 5, and the push rod 103 is used to squeeze the indicator 30. The swing member 10 is swung by the connection between the sleeve 101 and the shaft seat. There is an angle A between the connecting rod 102 and the push rod 103 arranged on the sleeve 101, so that the connecting rod 102 can be connected to the transmission component 5 and the push rod 103 can match the position of the indicator 30. When the circuit breaker is in the open state, the top rod 103 squeezes the indicator 30, and the indicator 30 extends out of the blind groove 20 when squeezed, thereby being exposed outside the blind groove 20. When the circuit breaker is in the closed state, the top rod 103 does not squeeze the indicator 30, and the indicator 30 will retract, thereby not being exposed outside the blind groove 20. However, the top rod 103 is always in contact with the top rod 103 when it retracts.

[0021] The connecting rod 102 and the push rod 103 are staggered in front and back, and such an arrangement is used to match the position of the blind groove 20 and the transmission component 5.

[0022] An abutment block 103-a is provided at the end of the top rod 103 that is not connected to the sleeve 101, and the indicator 30 is always in abutment with the abutment block 103-a. The lateral width of the abutment block 103-a is greater than the lateral width of the top rod 103, so that the abutment block 103-a can provide a larger contact area, so that the indicator 30 can always maintain stable contact with the abutment block 103-a, and unstable contact will not occur. In addition, the contact surface between the abutment block 103-a and the indicator 30 is arc-shaped, so that when the abutment block 103-a swings toward the closing direction, the spacing between the contact surface of the abutment block 103-a and the shell wall of the front shell 1 increases, so that the indicator 30 retracts and is no longer exposed outside the blind groove 20.

[0023] The indicator 30 includes a lifting rod 301, an indicator block 302, and a spring 303. The lifting rod 301 moves in the through hole 201 formed on the blind groove 20 and always abuts against the abutment block 103-a. Part of the lifting rod 301 is located in the blind groove 20 and part is located in the front housing 1. The indicator block 302 is arranged at the end of the lifting rod 301 that does not abut against the abutment block 103-a and is placed in the blind groove 20. It is exposed or not exposed outside the blind groove 20 when the circuit breaker is in the open state or the closed state. The spring 303 is placed in the blind groove 20 and is sleeved on the part of the lifting rod 301 located in the blind groove 20. One end is fixed to the indicator block 302 and the other end is fixed to the bottom surface of the blind groove 20. The setting allows the indicator member 30 to extend when squeezed, and the lifting rod 301 to move, and it abuts against the abutment block 103-a. In this way, when squeezed, the lifting rod 301 can move in the direction of being exposed outside the blind groove 20, so that the indicator block 302 connected to it is also exposed outside the blind groove 20. The setting of the spring 303 makes the lifting rod 301 have a self-resetting effect, that is, the spring 303 can be stretched and deformed when the lifting rod 301 is squeezed. In this way, when the abutment block 103-a does not squeeze the lifting rod 301, the lifting rod 301 can use the retraction effect of the spring 303 to move in the reset direction by itself, so that the indicator block 302 is no longer exposed outside the blind groove 20.

[0024] The lifting rod 301 is threadedly connected to a stop block 301-a on the part located inside the front shell 1. The stop block 301 can abut against the shell wall of the front shell 1 when the circuit breaker is in the open state. On the one hand, the stop block 301-a is used to limit the indicator 30 on the front shell 1, so that it is always kept in the blind groove 20. On the other hand, it abuts against the shell wall of the front shell 1, so that the indicator 30 can be completely exposed outside the blind groove 20.

[0025] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A circuit breaker with an indication structure, comprising a front housing (1) and a rear housing (2) assembled with each other, the front housing (1) and the rear housing (2) being provided with mounting holes (3) for setting screws, the front housing (1) being provided with a rotatable handle assembly (4), a transmission assembly (5) driven and movable by the handle assembly (4), a first terminal (6), and a second terminal (7), the transmission assembly (5) being provided with a long moving piece (51) having a moving contact (8), the first terminal (6) and the second terminal (7) being provided with a stationary contact (9) matching the moving contact (8), characterized in that: A swingable swinging member (10) is provided on the interior of the front housing (1), and the swinging member (10) is connected to the transmission assembly (5) so as to swing by the movement of the transmission assembly (5). A blind groove (20) is provided on the housing wall of the front housing (1) near the swinging member (10), and an indicator member (30) is provided in the blind groove (20) so as to be squeezed and extended and partially pass through the blind groove (20) to abut against the swinging member (10). The indicator member (30) is partially exposed outside the blind groove (20) when the circuit breaker is in an open state due to the swinging of the swinging member (10), and is not exposed outside the blind groove (20) when the circuit breaker is in a closed state.

2. The circuit breaker with an indicator structure according to claim 1, characterized in that: The swinging member (10) includes a shaft sleeve (101), a connecting rod (102), and a push rod (103); the shaft sleeve (101) is rotatably arranged on a shaft seat on the front housing (1); the connecting rod (102) and the push rod (103) are both arranged on the outer peripheral surface of the shaft sleeve (101) and form an angle A, A=140°; the connecting rod (102) is connected to the transmission assembly (5); and the push rod (103) is used to squeeze the indicator (30).

3. The circuit breaker with an indicator structure according to claim 2, characterized in that: The connecting rod (102) and the push rod (103) are staggered in the front and rear directions.

4. The circuit breaker with an indicator structure according to claim 3, characterized in that: An abutment block (103-a) is provided at one end of the push rod (103) that is not connected to the shaft sleeve (101), and the indicator (30) is always in abutment with the abutment block (103-a).

5. The circuit breaker with an indication structure according to claim 4, characterized in that: The indicator (30) includes a lifting rod (301), an indicator block (302), and a spring (303). The lifting rod (301) moves in a through hole (201) formed on the blind groove (20) and is always in contact with the abutment block (103-a). Part of the lifting rod (301) is located in the blind groove (20) and part is located in the front housing (1). The indicator block (302) is arranged at the end of the lifting rod (301) that is not in contact with the abutment block (103-a) and is placed in the blind groove (20). The indicator block is exposed or not exposed outside the blind groove (20) when the circuit breaker is in an open state or a closed state. The spring (303) is placed in the blind groove (20) and is sleeved on the part of the lifting rod (301) located in the blind groove (20). One end of the spring is fixed to the indicator block (302) and the other end is fixed to the bottom surface of the blind groove (20).

6. The circuit breaker with an indication structure according to claim 5, characterized in that: The lifting rod (301) is threadedly connected to a stop block (301-a) on a portion located inside the front housing (1); the stop block (301-a) can abut against the housing wall of the front housing (1) when the circuit breaker is in an open state.

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