Circuit breaker handle closing locking structure and circuit breaker

Abstract

The circuit breaker handle switching-on locking structure comprises a handle and a shell, the handle is arranged in a mounting hole of the shell in a linear movement mode, the circuit breaker handle switching-on locking structure further comprises a locking piece, and the locking piece is movably arranged in a containing hole of the shell and comprises a limiting part and a linkage part connected between the limiting part and the handle in a linkage mode; when the handle moves to the opening position, the handle drives the limiting part through the linkage part, so that the limiting part is accommodated in the shell; and when the handle moves to the closing position, the handle drives the limiting part through the linkage part, so that the limiting part at least partially extends out of the shell and is used for limiting the circuit breaker. The circuit breaker comprises the handle closing locking structure. According to the circuit breaker handle closing locking structure and the circuit breaker, the linkage part of the locking piece is in linkage connection with the handle, and the handle can drive the locking piece, so that the limiting part is contained in the shell when the circuit breaker is opened and extends out of the shell to be in limiting fit with a cabinet body when the circuit breaker is closed; and the switch cannot be inserted into or taken out of the cabinet body in a switching-on state, so that an electric shock accident is prevented.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a circuit breaker handle closing and locking structure and a circuit breaker. Background Art

[0002] During installation and maintenance of circuit breakers, electric shock accidents often occur due to incorrect closing and opening of the circuit breaker. For example, installing or removing the circuit breaker when it is in the closed state may cause electric shock. Utility Model Content

[0003] The purpose of the utility model is to overcome at least one defect of the prior art and provide a circuit breaker handle closing and locking structure and a circuit breaker.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A circuit breaker handle closing locking structure comprises a handle and a housing, wherein the handle is linearly movable within a mounting hole of the housing and can switch between a closing position and an opening position. The structure also comprises a locking member, wherein the housing is provided with a receiving hole connected to the mounting hole, and the locking member is movably disposed within the receiving hole and comprises a limiting portion and a linkage portion linked between the limiting portion and the handle; when the handle moves to the opening position, the handle drives the limiting portion via the linkage portion of the locking member, so that the limiting portion is received within the receiving hole of the housing; when the handle moves to the closing position, the handle drives the limiting portion via the linkage portion of the locking member, so that the limiting portion at least partially extends out of the housing, thereby limiting the circuit breaker.

[0006] Optionally, the limiting portion and the linkage portion of the locking member are fixedly connected, and the handle is provided with a sliding groove that slides with the linkage portion, the linkage portion is slidably inserted into the sliding groove, and the length direction of the sliding groove is set at an oblique angle to the moving direction of the handle and the moving direction of the locking member.

[0007] Optionally, the moving direction of the handle is perpendicular to the moving direction of the locking member.

[0008] Optionally, the linkage part is a circular shaft structure; the slide groove is a waist-shaped hole, having a first positioning part and a second positioning part located at both ends, which respectively cooperate with the linkage part to limit the sliding stroke of the linkage part.

[0009] Optionally, the handle is provided with a connecting port for connecting the slide groove and the accommodating hole, and the limiting part is a block structure that slides with the accommodating hole. One end of the limiting part is slidably set in the accommodating hole, and the other end extends into the connecting port and is connected with the linkage part.

[0010] A circuit breaker comprising any one of the circuit breaker handle closing and locking structures described above.

[0011] Optionally, it also includes an indicator member rotatably arranged on the handle, the handle is provided with an indicator window and a cavity for accommodating the indicator member, the indicator member is provided with an actuated structure extending out of the cavity, and a limit block is provided on the side wall of the mounting hole, the limit block is located on the moving path of the actuated structure, and is used to drive the indicator member to rotate; when the handle moves to the closing position and / or the opening position, the indicator member moves with the handle and contacts the limit block for limitation, and the limit block can drive the indicator member to rotate so that the corresponding indication mark on the indicator member is opposite to the indication window.

[0012] Optionally, the limit block includes two driving surfaces arranged opposite to each other along the movement direction of the handle, and a sliding surface connected between the two driving surfaces, the two driving surfaces are respectively used to push the driven structure to drive the indicator to rotate, and the sliding surface is used to cooperate with the driven structure in a limiting manner when the handle is in the closing position and the opening position;

[0013] And / or, the driven structure includes two connected push rods, and the side surfaces of the two push rods arranged opposite to each other are respectively provided with push surfaces, and a push groove is formed between the push surfaces of the two push rods, and the limit block can extend into the push groove and cooperate with the two push surfaces; the two push rods are respectively provided with a straight surface connected to their respective push surfaces, and the flat surfaces are set at an oblique angle to the corresponding pushing surfaces, and the flat surfaces are slidably matched with the sliding surface of the limit block, and the flat surfaces are used to avoid the driving surface of the limit block.

[0014] Optionally, the indicator member includes an indicator plate and a pivot shaft, and a swing rod connected between the indicator plate and the pivot shaft, the pivot shaft is rotatably connected to the handle, the indicator plate is provided with an indicator mark that cooperates with the indicator window, the pivot shaft passes through the avoidance hole and extends to the outside of the handle and is connected to the driven structure, and the limit block is used to push the indicator member to rotate around the pivot shaft.

[0015] Optionally, it also includes a light guide part fixed on the handle, the light guide part includes a connected light guide column and a light guide plate, the light guide plate is placed in the cavity of the handle and is arranged corresponding to the indicator window of the handle, and a fixing column is provided on one end of the light guide column connected to the light guide plate, which is used to be inserted into the fixing hole on the side wall of the cavity, and the other end of the light guide column extends out of the cavity.

[0016] The circuit breaker handle closing locking structure and the circuit breaker of the present invention are linked to the handle through the linkage portion of the locking member. The handle can drive the locking member so that the limiting portion is retracted into the housing when the circuit breaker is opened, and extends out of the housing to cooperate with the cabinet limit when the circuit breaker is closed. This ensures that the circuit breaker cannot be inserted into or removed from the cabinet in the closed state, thereby preventing electric shock accidents and improving safety. The structure is simple, the use of elastic members is reduced, the action relationship is simplified, and the action is stable and reliable.

[0017] In addition, the indicator is driven to rotate on the handle through the limit block so that the corresponding indicator mark on the indicator is opposite to the indicator window to indicate the opening and closing status of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the handle, housing and terminal cover of the utility model;

[0019] Figure 2 This is a structural diagram of the handle closing and locking structure of the circuit breaker in the open state of the utility model;

[0020] Figure 3 This is a structural diagram of the handle closing and locking structure of the utility model in the closed state of the circuit breaker;

[0021] Figure 4 It is a structural diagram of the locking member of the utility model;

[0022] Figure 5 It is a structural diagram of the handle portion of the utility model;

[0023] Figure 6 It is a structural diagram of the handle of the utility model;

[0024] Figure 7 It is a cross-sectional view of the terminal cover and indicator of the utility model;

[0025] Figure 8 This is a structural diagram of the terminal cover of the utility model;

[0026] Figure 9 It is a structural diagram of the indicator of the utility model;

[0027] Figure 10 It is a structural schematic diagram of the light guide component of the utility model.

[0028] Handle 1; indicator window 11; cavity 12; rotation hole 13; avoidance hole 14; fixing hole 15; slide groove 18; first positioning portion 181; second positioning portion 182; communication port 19; indicator member 3; indicator plate 31; swing lever 32; pivot shaft 33; push rod 34; pushing surface 341; flat surface 342; pushing groove 35; yielding notch 36; light guide member 4; light guide column 41; light guide plate 42; fixing column 43; locking member 6; limiting portion 61; linkage portion 62; terminal cover 7; limiting block 71; driving surface 711; sliding surface 712; matching groove 72; second side wall 73; housing 8; first side wall 81; accommodating hole 85. DETAILED DESCRIPTION

[0029] The following embodiments are given in conjunction with the accompanying drawings to further illustrate the specific implementation of the circuit breaker handle closing lock structure and the circuit breaker of the present invention. The circuit breaker handle closing lock structure and the circuit breaker of the present invention are not limited to the description of the following embodiments.

[0030] like Figure 1-Figure 3 As shown, the circuit breaker of this embodiment includes a circuit breaker handle closing and locking structure. The handle closing and locking structure includes a handle 1 and a housing 8. The housing 8 comprises two halves that together form a mounting cavity for mounting an operating mechanism and a contact mechanism. The mounting cavity has an opening at one end. A terminal cover 7 is fixed within the opening and positioned above the handle 1. A mounting hole is formed between the housing 8 and the housing 8. The mounting hole has a first side wall 81 located on the housing 8 and a second side wall 73 located on the terminal cover 7. The handle 1 is linearly movable within the mounting hole of the housing 8 and can be switched between a closed position and an open position. When the handle 1 is operated to the closed position, the handle 1 drives the operating mechanism to close the contact mechanism, thereby closing the circuit breaker. When the handle 1 is operated to the open position, the handle 1 drives the operating mechanism to open the contact mechanism, thereby opening the circuit breaker. The circuit breaker of this embodiment is installed in a cabinet for use. The cabinet typically has a circuit breaker mounting cavity adapted for the circuit breaker. Of course, as another embodiment, the terminal cover 7 may also be integrally formed with a portion of the outer shell 8 and the two half shells.

[0031] The improvement of this application is that Figure 2-Figure 4 As shown, the circuit breaker handle closing locking structure of this embodiment further includes a locking member 6. The housing 8 is provided with a receiving hole 85 communicating with the mounting hole. The locking member 6 is movably arranged in the receiving hole 85 and includes a limiting portion 61 and a linkage portion 62 linked to the limiting portion 61 and the handle 1; Figure 2 As shown, when the handle 1 moves to the off position, the handle 1 drives the limiting portion 61 through the linkage portion 62 of the locking member 6, so that the limiting portion 61 is received in the receiving hole 85 of the housing 8; Figure 3 As shown, when the handle 1 moves to the closed position, the handle 1 drives the limiting portion 61 through the linkage portion 62 of the locking member 6, so that the limiting portion 61 at least partially extends out of the housing 8 and cooperates with the limiting structure on the cabinet, such as the limiting groove or the side wall of the circuit breaker installation cavity, to limit the circuit breaker. The circuit breaker handle closing locking structure and circuit breaker of this embodiment are linked to the handle 1 through the linkage portion 62 of the locking member 6. The handle 1 can drive the locking member 6, so that the limiting portion 61 is retracted into the housing 8 when the circuit breaker is opened, and extends out of the housing 8 to cooperate with the cabinet when the circuit breaker is closed. This ensures that the circuit breaker cannot be inserted into or removed from the cabinet in the closed state, thereby preventing electric shock accidents and improving safety. The structure is simple, the use of elastic parts is reduced, the action relationship is simplified, and the action is stable and reliable.

[0032] like Figure 2-Figure 5 As shown, the locking member 6 and the handle 1 of this embodiment have a linkage structure. The locking member 6 has a limiting portion 61 and a linkage portion 62 fixedly connected. The handle 1 is provided with a slot 18 that slidably engages with the linkage portion 62. The linkage portion 62 slides into the slot 18 and slides with the slot 18 along its length. The length of the slot 18 is arranged at an oblique angle to the movement direction of the handle 1 and the movement direction of the locking member 6. The linkage portion 62 of this embodiment is fixedly connected to the limiting portion 61 and slides into the slot 18 of the handle 1 to achieve a movable connection with the handle 1. This structure is simple, easy to manufacture and assemble, and has stable operation. Specifically, the handle 1 is provided with a connecting port 19 for connecting the slot 18 with the receiving hole 85. The limiting portion 61 is a block-shaped structure that slidably engages with the receiving hole 85. One end of the limiting portion 61 slides into the receiving hole 85, and the other end extends into the connecting port 19 to connect with the linkage portion 62. The limiting portion 61 and the linkage portion 62 of this embodiment are integrally connected to form a T-shaped locking member 6. Of course, the limiting portion 61 and the linkage portion 62 can also be fixedly connected in other ways such as snap connection.

[0033] like Figure 2 and Figure 3 As shown, the moving direction of the handle 1 is perpendicular to the moving direction of the locking member 6. Figure 2 As shown in FIG, during the process of the handle 1 moving to the opening position, the handle 1 moves to the left, and the linkage portion 62 of the locking member 6 is restricted by the slide groove 18 of the handle 1, so that the locking member 6 moves upward, that is, the linkage portion 62 of the locking member 6 moves to the upper right relative to the slide groove 18 of the handle 1; Figure 3 As shown, as handle 1 moves toward the closed position, it moves rightward. The linkage portion 62 of locking member 6 is restricted by the slide slot 18 of handle 1, causing locking member 6 to move downward. In other words, the linkage portion 62 of locking member 6 moves to the lower left relative to the slide slot 18 of handle 1. The rational design of the movement directions of handle 1 and limiting portion 61 simplifies the operational relationship and facilitates a compact and rational layout. Obviously, the movement directions of handle 1 and limiting portion 61 can also be set at other angles.

[0034] like Figure 2 and Figure 3 As shown, the sliding engagement structure between the linkage portion 62 and the chute 18 of this embodiment comprises a circular shaft structure, and the chute 18 is a waist-shaped hole with a first positioning portion 181 and a second positioning portion 182 at either end, each of which engages with the linkage portion 62 to limit the sliding travel of the linkage portion 62. The structure is simple: the linkage portion 62 cooperates with the first positioning portion 181 to position the linkage portion 62 when the circuit breaker is closed, and cooperates with the second positioning portion 182 to position the linkage portion 62 when the circuit breaker is open.

[0035] like Figure 5-Figure 8 As shown, the circuit breaker handle closing and locking structure of this embodiment further includes an indicator 3 rotatably arranged on the handle 1, and the handle 1 is provided with an indicator window 11 ( Figure 1 ) and a cavity 12 for accommodating the indicator 3, the indicator 3 is provided with an actuated structure extending out of the cavity 12, the side wall of the mounting hole (located on the second side wall 73 on the terminal cover 7) is provided with a mating groove 72 and a limit block 71 in the mating groove 72, the mating groove 72 and the cavity 12 are connected via an avoidance hole 14, the actuated structure of the indicator 3 is located in the mating groove 72, and the limit block 71 is located on the moving path of the actuated structure and is used to drive the indicator 3 to rotate. When the handle 1 moves to the closing position and / or the opening position, the indicator 3 moves with the handle 1 and contacts the limit block 71 for a limit, and the limit block 71 can drive the indicator 3 to rotate so that the corresponding indicator mark on the indicator 3 is opposite to the indicator window 11. The limit block 71 drives the indicator 3 to rotate on the handle 1 so that the corresponding indicator mark on the indicator 3 is opposite to the indicator window 41 to indicate the opening and closing status of the circuit breaker.

[0036] like Figure 8 As shown, the limit block 71 includes two driving surfaces 711 arranged opposite to each other along the moving direction of the handle 1, and a sliding surface 712 connected between the two driving surfaces 711. The two driving surfaces 711 are respectively used to push the actuated structure to drive the indicator 3 to rotate, and the sliding surface 712 is used to cooperate with the actuated structure in limiting position when the handle 1 is in the closing position and the opening position.

[0037] like Figure 5 、 Figure 6 and Figure 9As shown, the indicator 3 includes an indicator plate 31 and a pivot shaft 33, and a swing rod 32 connected between the indicator plate 31 and the pivot shaft 33. The pivot shaft 33 is rotatably connected to the handle 1 and is rotatably inserted into the rotation hole 13 of the handle 1. The indicator plate 31 is provided with an indicator mark that cooperates with the indicator window 11. The indicator mark can be of different colors or symbols or texts and is used to indicate the opening and closing status of the circuit breaker. The pivot shaft 33 passes through the avoidance hole 14 and extends to the outside of the handle 1 to be connected to the driven structure. The limit block 71 is used to push the indicator 3 to rotate around the pivot shaft 33. Specifically, the passive structure includes two connected push rods 34, each having a push surface 341 on opposite sides thereof. A push groove 35 is formed between the push surfaces 341 of the two push rods 34, and a stop block 71 can extend into the push groove 35 and engage with the two push surfaces 341. The two push rods 34 are each provided with a flat surface 342 connected to their respective push surfaces 341. The flat surfaces 342 are arranged at an oblique angle to the corresponding push surface 341, and the flat surfaces 342 slidably engage with the sliding surface 712 of the stop block 71. The flat surfaces 342 are configured to avoid the driving surface 711 of the stop block 71. Specifically, the two push rods 34 are connected in a V-shape, and the apex of the V-shape of the two push rods 34 is connected to the pivot shaft 33. A clearance notch 36 is provided on the outer side of the end of one of the push rods 34 connected to the pivot shaft 33, which is configured to give way to the handle 1 when the indicator 3 rotates to avoid interference with the handle 1.

[0038] like Figure 5 and Figure 10 As shown, the circuit breaker handle closing locking structure of this embodiment also includes a light guide 4 fixed to the handle 1, the light guide 4 includes a connected light guide column 41 and a light guide plate 42, the light guide plate 42 is placed in the cavity 12 of the handle 1 and is arranged corresponding to the indicator window 11 of the handle 1, the indicator plate 31 and the light guide plate 42 are preferably arc-shaped plates, the indicator plate 31 is located between the light guide plate 42 and the indicator window 11, and a fixing column 43 is provided on the end of the light guide column 41 connected to the light guide plate 42 for insertion into the fixing hole 15 on the side wall of the cavity 12. The other end of the light guide column 41 extends out of the cavity 12 and is arranged corresponding to the light source. The light source is transmitted to the light guide plate 42 through the light guide column 41, and the internal alarm status of the circuit breaker is displayed by the indicator window 11. The alarm status includes but is not limited to the opening and closing status, and fault indications such as current and voltage abnormalities.

[0039] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are conventionally placed directions or positional relationships during use. They are intended solely for ease of description and do not imply that the devices or components referred to must have a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.

[0040] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A circuit breaker handle closing and locking structure, comprising a handle (1) and a housing (8), wherein the handle (1) is arranged in a mounting hole of the housing (8) for linear movement and can be switched between a closing position and an opening position, and is characterized in that: The invention also includes a locking member (6), wherein the housing (8) is provided with a receiving hole (85) communicating with the mounting hole, and the locking member (6) is movably arranged in the receiving hole (85), and includes a limiting portion (61) and a linkage portion (62) linked between the limiting portion (61) and the handle (1); when the handle (1) moves to the opening position, the handle (1) drives the limiting portion (61) through the linkage portion (62) of the locking member (6), so that the limiting portion (61) is accommodated in the receiving hole (85) of the housing (8); when the handle (1) moves to the closing position, the handle (1) drives the limiting portion (61) through the linkage portion (62) of the locking member (6), so that the limiting portion (61) at least partially extends out of the housing (8), so as to limit the circuit breaker.

2. The circuit breaker handle closing and locking structure according to claim 1, characterized in that: The limiting portion (61) and the linkage portion (62) of the locking member (6) are fixedly connected, and a sliding groove (18) is provided on the handle (1) to slide with the linkage portion (62). The linkage portion (62) is slidably inserted into the sliding groove (18), and the length direction of the sliding groove (18) is set at an oblique angle to the moving direction of the handle (1) and the moving direction of the locking member (6).

3. The circuit breaker handle closing and locking structure according to claim 2, characterized in that: The moving direction of the handle (1) is perpendicular to the moving direction of the locking member (6).

4. The circuit breaker handle closing and locking structure according to claim 2, characterized in that: The linkage part (62) is a circular shaft structure; the slide groove (18) is a waist-shaped hole, having a first positioning part (181) and a second positioning part (182) located at both ends, which are respectively matched with the linkage part (62) to limit the sliding stroke of the linkage part (62).

5. The circuit breaker handle closing and locking structure according to claim 2, characterized in that: The handle (1) is provided with a communication port (19) for connecting the slide groove (18) and the receiving hole (85); the limiting portion (61) is a block structure that slides with the receiving hole (85); one end of the limiting portion (61) is slidably arranged in the receiving hole (85), and the other end extends into the communication port (19) and is connected to the linkage portion (62).

6. A circuit breaker, characterized in that: The invention comprises the circuit breaker handle closing and locking structure according to any one of claims 1 to 5.

7. The circuit breaker according to claim 6, characterized in that: The invention also includes an indicator (3) rotatably arranged on the handle (1), the handle (1) being provided with an indicator window (11) and a cavity (12) for accommodating the indicator (3), the indicator (3) being provided with an actuated structure extending out of the cavity (12), a limit block (71) being provided on the side wall of the mounting hole, the limit block (71) being located on the moving path of the actuated structure and being used to drive the indicator (3) to rotate; when the handle (1) is moved to the closing position and / or the opening position, the indicator (3) moves with the handle (1) and contacts the limit block (71) for limiting position, and the limit block (71) can drive the indicator (3) to rotate so that the corresponding indicator mark on the indicator (3) is opposite to the indicator window (11).

8. The circuit breaker according to claim 7, wherein: The limit block (71) comprises two driving surfaces (711) arranged opposite to each other along the moving direction of the handle (1), and a sliding surface (712) connected between the two driving surfaces (711), the two driving surfaces (711) being respectively used to push the driven structure to drive the indicator (3) to rotate, and the sliding surface (712) being used to cooperate with the driven structure in limiting position when the handle (1) is located at the closing position and the opening position; And / or, the driven structure includes two connected push rods (34), the side surfaces of the two push rods (34) being oppositely arranged are respectively provided with push surfaces (341), a push groove (35) is formed between the push surfaces (341) of the two push rods (34), and the limit block (71) can extend into the push groove (35) and cooperate with the two push surfaces (341); the two push rods (34) are respectively provided with a straight surface (342) connected to their respective push surfaces (341), the straight surface (342) and the corresponding push surface (341) are arranged at an oblique angle, the straight surface (342) and the sliding surface (712) of the limit block (71) are slidably matched, and the straight surface (342) is used to avoid the driving surface (711) of the limit block (71).

9. The circuit breaker according to claim 7, wherein: The indicator member (3) comprises an indicator plate (31) and a pivot shaft (33), and a swinging rod (32) connected between the indicator plate (31) and the pivot shaft (33); the pivot shaft (33) is rotatably connected to the handle (1); an indicator mark that matches the indicator window (11) is provided on the indicator plate (31); the pivot shaft (33) passes through the avoidance hole (14) and extends to the outside of the handle (1) to be connected to the driven structure; the limit block (71) is used to push the indicator member (3) to rotate around the pivot shaft (33).

10. The circuit breaker according to claim 6, wherein: The invention also includes a light guide member (4) fixed on the handle (1), wherein the light guide member (4) includes a light guide column (41) and a light guide plate (42) connected to each other, wherein the light guide plate (42) is placed in the cavity (12) of the handle (1) and is arranged corresponding to the indication window (11) of the handle (1), and a fixing column (43) is provided on one end of the light guide column (41) connected to the light guide plate (42) for being inserted into a fixing hole (15) on the side wall of the cavity (12), and the other end of the light guide column (41) extends out of the cavity (12).

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