Circuit breaker with detachable operating rod

Abstract

A circuit breaker with a detachable operating rod comprises a plurality of circuit breaker poles arranged side by side in a first direction, each circuit breaker pole is provided with an independent shell and a handle extending out of the shell, the circuit breaker further comprises a linkage piece and an operating piece, the handle is provided with an operating part located outside the shell of the circuit breaker pole, the operating part is provided with a linkage hole, and the linkage hole is communicated with the linkage hole. The linkage piece is inserted into linkage holes of the multiple circuit breaker poles in the first direction to enable handles of the multiple circuit breaker poles to be in linkage, the operating piece comprises a connecting rod and an operating rod arranged on the connecting rod, the connecting rod comprises a sliding groove used for being arranged on the operating portion in a sleeving mode, limiting blocks are arranged on the two opposite groove walls of the sliding groove respectively, and the limiting blocks are arranged on the two opposite groove walls of the sliding groove respectively. Two opposite side surfaces of the operating part are respectively provided with a limiting groove, the limiting grooves on two adjacent circuit breaker poles are arranged at intervals and form an insertion groove, the limiting block can move along a second direction to pass through the insertion groove, and then the limiting block slides into the limiting groove of the handle for limiting matching.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a circuit breaker with a detachable operating rod. Background Art

[0002] Due to the special control requirements of the explosion-proof electrical appliance industry, the small circuit breaker installed in the explosion-proof casing must be operated outside the explosion-proof casing. Conventional small circuit breakers are mainly suitable for residential, conventional industrial and other uses. Therefore, a complex structure for internal and external linkage is required to operate the small circuit breaker. The structure is complex, the assembly and use are cumbersome, and it is not convenient for users to switch freely according to the usage scenario. Utility Model Content

[0003] The purpose of the present utility model is to overcome at least one defect of the prior art and provide a circuit breaker with a detachable operating rod.

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

[0005] A circuit breaker with a detachable operating rod comprises a plurality of circuit breaker poles arranged side by side along a first direction, each circuit breaker pole is provided with an independent housing and a handle extending from the housing, and further comprises a linkage member and an operating member.

[0006] The handle is provided with an operating portion located outside the housing of the circuit breaker pole, and the operating portion is provided with a linkage hole. The linkage member is inserted into the linkage holes of the plurality of circuit breaker poles along a first direction to link the handles of the plurality of circuit breaker poles.

[0007] The operating member includes a connecting rod and an operating rod arranged on the connecting rod. The connecting rod includes a sliding groove for being sleeved on the operating part. The two opposite groove walls of the sliding groove are respectively provided with a limit block. The two opposite side surfaces of the operating part are respectively provided with a limit groove. The limit grooves on two adjacent circuit breaker poles are arranged at intervals to form an insertion groove.

[0008] The limit block can move along the second direction through the insertion slot so that the sliding slot of the connecting rod is sleeved on the operating part of the handle, and then the limit block can move along the first direction to a position aligned with the limit slot, so that the limit block can slide into the limit slot of the handle for limited engagement, and the second direction is perpendicular to the first direction.

[0009] Preferably, the operating part includes a protrusion and an avoidance part, and the protrusion and the avoidance part are adjacently arranged along the width direction of the circuit breaker pole, i.e., the first direction. The thickness of the avoidance part in the direction perpendicular to the width direction of the circuit breaker pole is less than the thickness of the protrusion part, and the insertion groove is formed between the avoidance part and the protrusions of two adjacent operating parts.

[0010] Preferably, the length of the operating portion in the width direction of the circuit breaker pole is equal to the width of the circuit breaker pole, and the length of the protrusion in the width direction of the circuit breaker pole is equal to half the length of the operating portion.

[0011] Preferably, an inclined transition surface is provided at one end of the limiting groove close to the avoidance portion, and the transition surface is inclined with respect to the width direction of the circuit breaker pole.

[0012] Preferably, the limiting block includes a transverse limiting portion, which is arranged parallel to the width direction of the circuit breaker pole, and the transverse limiting portion is inserted into the limiting groove for limiting engagement.

[0013] Preferably, a second limit block is provided in the slide groove, and the second limit block includes a transverse limit portion arranged parallel to the width direction of the circuit breaker pole, and a longitudinal limit portion arranged perpendicular to the transverse limit portion, the transverse limit portion is inserted into the limit groove for limiting cooperation, and the longitudinal limit portion is limited and cooperated with the protrusion outside the limit groove.

[0014] Preferably, the two opposite side walls at one end of the chute are both provided with the limiting blocks, and the two opposite side walls at one end of the chute away from the limiting blocks are both provided with the second limiting blocks.

[0015] Preferably, the slide groove is provided with a bottom wall connected between the two opposite side walls, and the bottom wall is provided with draft holes corresponding to the limiting block and the second limiting block respectively.

[0016] Preferably, a screw hole for connecting a screw is provided on the avoidance portion of the operating portion, and a connecting hole for passing the screw is provided on the connecting rod. After the screw passes through the connecting rod from the connecting hole, it is connected to the handle through the screw hole.

[0017] Preferably, the handles of two adjacent circuit breaker poles are connected via a linkage member, and the length of the linkage member is smaller than the distance between two adjacent screw holes.

[0018] Preferably, the operating rod and the connecting hole are respectively provided at both ends of the connecting rod, and the operating rod is perpendicular to the connecting rod.

[0019] Preferably, the radial cross-section of the linkage member is rectangular, the linkage hole is provided with bosses corresponding to the four side surfaces of the linkage member, and when the linkage member is inserted into the linkage hole, the four side surfaces of the linkage member are in contact with the corresponding bosses respectively.

[0020] Preferably, two adjacent circuit breaker poles are fixed by rivets, and an annular positioning ring is sleeved on the rivet. The housing of the circuit breaker pole is provided with a rivet hole for passing the rivet and a positioning groove for accommodating the positioning ring, and the rivet hole is connected to the bottom of the positioning groove.

[0021] Preferably, an assembling shaft is provided between two adjacent circuit breaker poles, and an assembling hole for inserting the assembling shaft is provided on the shell of the circuit breaker pole. The two ends of the assembling shaft are respectively inserted into the two adjacent circuit breaker poles and are respectively connected to the operating mechanisms of the two circuit breaker poles. When the operating mechanism of one circuit breaker pole is tripped, the operating mechanism of the other circuit breaker pole is driven to trip through the assembling shaft.

[0022] In the circuit breaker with a detachable operating lever of the present application, the limit block is first inserted from the insertion slot to a position aligned with the limit slot, and then slides into the limit slot for limited engagement. During the assembly process, the operating part only needs to be moved on both sides in two directions to achieve installation. It not only has the characteristics of low assembly difficulty and simple structure, greatly reducing the assembly stroke and space, but also because the multiple handles are linked by linkage parts, the circuit breaker can still be used in industrial and household occasions after the operating part is removed.

[0023] In addition, the position is limited by setting a limit groove on the operating part, which requires little change and will not affect the use of the handle.

[0024] In addition, the length of the protrusion ensures that the limiting groove has a sufficient length, thereby making the limiting groove and the limiting block on the connecting rod more reliably matched to prevent damage under external force operation.

[0025] In addition, the screw is directly connected to the handle to fix the operating part to the handle, preventing the operating part from moving laterally. It has the characteristics of simple structure and easy assembly, and does not require additional parts to fix the operating part. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of assembling multiple circuit breakers of the utility model;

[0027] Figure 2 This is a schematic diagram of the installation of the operating part of the utility model;

[0028] Figure 3 It is a structural diagram of the circuit breaker of the utility model;

[0029] Figure 4 It is a structural diagram of the handle of the utility model;

[0030] Figure 5 It is a structural schematic diagram of the bottom side of the operating member of the utility model;

[0031] Figure 6 It is a schematic structural diagram of the top side of the operating member of the utility model;

[0032] Figure 7 It is a structural schematic diagram of the side surface of the handle of the utility model;

[0033] Figure 8It is a structural diagram of the linkage member of the utility model;

[0034] In the picture:

[0035] 1 circuit breaker

[0036] 2 handles

[0037] 3. Operation section

[0038] 4 linkage parts

[0039] 5 operating parts

[0040] 6 screws

[0041] 7 Rivets

[0042] 8 Locating ring

[0043] 9 Assembly axis

[0044] 11 rivet holes

[0045] 12 positioning slots

[0046] 13 assembly holes

[0047] 31 linkage hole

[0048] 32 limit slots

[0049] 34 Insert slot

[0050] 35 raised part

[0051] 36 Avoidance

[0052] 37 transition surface

[0053] 38 screw holes

[0054] 39 boss

[0055] 51 connecting rod

[0056] 52 joystick

[0057] 53 chute

[0058] 54 limit block

[0059] 55 lateral limiter

[0060] 56 Second limit block

[0061] 57 longitudinal limiter

[0062] 58 Draft hole

[0063] 59 connection hole DETAILED DESCRIPTION

[0064] The following embodiments are given in conjunction with the accompanying drawings to further illustrate the specific implementation of the circuit breaker of the present invention. The circuit breaker of the present invention is not limited to the description of the following embodiments.

[0065] like Figure 1-6 As shown, the explosion-proof circuit breaker of this embodiment includes a plurality of circuit breaker poles 1 arranged side by side along a first direction, each circuit breaker pole 1 is provided with an independent housing and a handle 2 extending from the housing, the handle 2 is provided with an operating portion 3 located outside the housing of the circuit breaker pole 1, and also includes a linkage member 4, the operating portion 3 is provided with a linkage hole 31 for inserting the linkage member 4, and the linkage member 4 is inserted into the linkage holes 31 of the plurality of circuit breaker poles 1 along the first direction to link the handles 2 of the plurality of circuit breaker poles 1. When the handle 2 of one circuit breaker pole 1 is operated to open or close, the remaining circuit breaker poles 1 can be driven to open or close through the linkage member 4. One linkage member 4 can be provided to pass through the linkage holes 31 of all the plurality of circuit breaker poles 1, or multiple linkage members 4 can be provided, with both ends of the linkage member 4 respectively inserted into the linkage holes 31 of two adjacent circuit breaker poles 1. When all adjacent circuit breaker poles 1 are linked through the linkage member 4, all circuit breaker poles 1 are driven to open or close.

[0066] An improvement of this embodiment is that it further includes an operating member 5 that is detachably mounted on the handle 2 of the circuit breaker pole 1. The operating member 5 can be used in explosion-proof environments. When it is not needed in explosion-proof environments, even if the operating member 5 is removed, the operating portion 3 can normally drive the circuit breaker pole 1 to open and close, meeting the needs of both industrial and household applications.

[0067] Specifically, the operating member 5 includes a connecting rod 51 and an operating rod 52 arranged on the connecting rod 51, the connecting rod 51 includes a sliding groove 53 for being sleeved on the operating part 3 of the handle 2, and a limit block 54 is respectively provided on the two opposite groove walls of the sliding groove 53, and the two opposite side surfaces of the operating part 3 are respectively provided with a limit groove 32. The limit grooves 32 on the two adjacent circuit breaker poles 1 are arranged at intervals and form an insertion groove 34, and the limit block 54 can move along the second direction through the insertion groove 34 so that the sliding groove 53 of the connecting rod 51 is sleeved on the operating part 3 of the handle 2, and then the limit block 54 can move along the first direction to a position aligned with the limit groove 32, so that the limit block 54 can slide into the limit groove 32 of the handle 2 for limited cooperation, so that the connecting rod 51 is fixedly connected to the handle 2, and the second direction is perpendicular to the first direction; the first direction is also the length direction of the connecting rod 51, and the length direction of the operating rod 52 is perpendicular to the length direction of the connecting rod 51, that is, the operating rod 52 is perpendicular to the connecting rod 51, and the second direction is also the length direction of the operating rod 52.

[0068] In the circuit breaker with a detachable operating lever of this embodiment, the limit block 54 is first inserted from the insertion slot 34 to a position aligned with the limit slot 32, and then slides into the limit slot 32 for a limited engagement. During assembly, the operating member 5 only needs to be moved in two directions on both sides to be installed. Not only is the assembly difficulty low and the structure simple, which greatly reduces the assembly stroke and space, but also, because the multiple handles 2 are linked by the linkage member 4, the circuit breaker pole 1 can still be used in industrial and household applications after the operating member 5 is removed.

[0069] like Figure 2-4 As shown, the operating portion 3 includes a protrusion 35 and a relief portion 36. The protrusion 35 and relief portion 36 are adjacently arranged along the width direction of the circuit breaker pole 1. The thickness of the relief portion 36 in the direction perpendicular to the width of the circuit breaker pole 1 is less than that of the protrusion 35. The insertion slot 34 is formed by reducing the thickness of the relief portion 36. The limiting slots 32 are respectively provided on the opposite side surfaces of the protrusion 35. The insertion slot 34 is formed between the relief portion 36 and the protrusions 35 of two adjacent operating portions 3. The width direction of the circuit breaker pole 1 is also the first direction.

[0070] Furthermore, the length of the operating portion 3 in the width direction of the circuit breaker pole 1 is equal to the width of the circuit breaker pole 1, that is, the operating portions 3 of the handles 2 of adjacent circuit breaker poles 1 are basically close together, which is convenient for integrated operation; the length of the protrusion 35 in the width direction of the circuit breaker pole 1 is equal to half the length of the operating portion 3. The length direction of the operating portion 3 is also the width direction of the circuit breaker pole 1. The length of the protrusion 35 ensures that the limit slot 32 has a sufficient length, thereby making the limit slot 32 more reliably matched with the limit block 54 on the connecting rod 51, preventing damage under external force operation.

[0071] It is understandable that the length of the protrusion 35 in the width direction of the circuit breaker pole 1 can also be less than or greater than half the length of the operating part 3, and the operating part 3 can also be provided with two avoidance portions 36, which are relatively arranged on both sides of the protrusion 35, and the length of the limit block 54 is adjusted at the same time.

[0072] Preferably, an inclined transition surface 37 is provided at one end of the limit groove 32 close to the avoidance portion 36. The transition surface 37 is inclined in the width direction of the circuit breaker pole 1, and can guide the limit block 54 when the limit block 54 is inserted into the limit groove 32, thereby facilitating the insertion of the limit block 54 into the limit groove 32.

[0073] like Figure 6As shown, the limit block 54 includes a transverse limit portion 55, which is arranged parallel to the width direction of the circuit breaker pole 1. A second limit block 56 is also provided in the sliding groove 53 of the connecting rod 51. The second limit block 56 includes a transverse limit portion 55 and a longitudinal limit portion 57 arranged perpendicular to the transverse limit portion 55. The transverse limit portion 55 is inserted into the limit groove 32 for limit engagement, and the longitudinal limit portion 57 is positioned outside the limit groove 32 for limit engagement with the protrusion 35. Preferably, a triangular guide portion 50 is provided at the end of the transverse limit portion 55 along the width direction of the circuit breaker housing. The guide portion 50 has inclined surfaces on both sides to facilitate insertion into the corresponding limit groove 32.

[0074] In this embodiment, the two opposite side walls at one end of the slide groove 53 are provided with the limit block 54, and the two opposite side walls at the end of the slide groove 53 away from the limit block 54 are provided with the second limit block 56. The limit block 54 or the second limit block 56 can also be set in the middle of the slide groove 53, all of which fall within the protection scope of the present utility model.

[0075] Preferably, the operating member 5 is die-cast, and the slide groove 53 is provided with a bottom wall connected between the two opposite side walls, and the bottom wall is provided with a draft hole 58 corresponding to the limit block 54 and the second limit block 56 on the two opposite side walls respectively. The draft hole 58 can facilitate die-casting drafting during die-casting, reduce the difficulty of die-casting, and improve the quality of die-casting.

[0076] like Figure 2-4 As shown, a screw hole 38 for connecting the screw 6 is provided on the avoidance portion 36 of the handle 2, and a connecting hole 59 for passing the screw 6 is provided on the connecting rod 51. After the screw 6 passes through the connecting rod 51 from the connecting hole 59, it is connected to the handle 2 through the screw hole 38. The screw 6 is directly connected to the handle 2 to fix the operating member 5 to the handle 2 to prevent the operating member 5 from moving laterally. It has the characteristics of simple structure and easy assembly, and no additional parts are required to fix the operating member 5.

[0077] Preferably, the handles 2 of two adjacent circuit breaker poles 1 are connected via a linkage member 4 , the length of which is smaller than the distance between two adjacent screw holes 38 , to prevent the screw 6 from being screwed into the linkage member 4 in the handle 2 .

[0078] The operating rod 52 and connecting hole 59 of this embodiment are respectively provided at both ends of the connecting rod 51. The length and position of the operating rod 52 can be selected as required. In this embodiment, the screw 6 is connected to the handle 2 of the outermost circuit breaker pole 1 through the connecting hole 59. The connecting hole 59 can also be selected in other positions so that the screw 6 is connected to the handle 2 of the middle circuit breaker pole 1 through the connecting hole 59. In addition, the screw 6 can also be replaced by other means, such as a snap-fit, and all of these fall within the scope of protection of the present invention.

[0079] like Figure 7-8 As shown, the radial cross-section of the linkage member 4 is rectangular, and the linkage hole 31 is provided with bosses 39 corresponding to the four side surfaces of the linkage member 4. When the linkage member 4 is inserted into the linkage hole 31, the four side surfaces of the linkage member 4 contact the corresponding bosses 39 respectively.

[0080] like Figure 1 As shown, the two adjacent circuit breaker poles 1 are fixed by rivets 7, and an annular positioning ring 8 is sleeved on the rivet 7. The housing of the circuit breaker pole 1 is provided with a rivet hole 11 for passing the rivet 7, and a positioning groove 12 for accommodating the positioning ring 8. The rivet hole 11 is connected to the bottom of the positioning groove 12. The rivet hole 11 can pass through multiple circuit breaker poles 1 and fix the multiple circuit breaker poles 1 together.

[0081] Furthermore, an assembling shaft 9 is provided between the two adjacent circuit breaker poles 1, and an assembling hole 13 for inserting the assembling shaft 9 is provided on the shell of the circuit breaker pole 1. The two ends of the assembling shaft 9 are respectively inserted into the two adjacent circuit breaker poles 1 and are respectively connected to the operating mechanisms of the two circuit breaker poles 1. When the operating mechanism of one circuit breaker pole 1 is tripped, the operating mechanism of the other circuit breaker pole 1 is driven to trip through the assembling shaft 9, and the assembling shaft 9 can be connected to the lock of the operating mechanism.

[0082] 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.

[0083] 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 with a detachable operating lever, comprising a plurality of circuit breaker poles (1) arranged side by side along a first direction, each circuit breaker pole (1) being provided with an independent housing and a handle (2) extending from the housing, characterized in that: It also includes a linkage member (4) and an operating member (5), The handle (2) is provided with an operating portion (3) located outside the housing of the circuit breaker pole (1), the operating portion (3) is provided with a linkage hole (31), and the linkage member (4) is inserted into the linkage holes (31) of the plurality of circuit breaker poles (1) along a first direction, so that the handles (2) of the plurality of circuit breaker poles (1) are linked. The operating member (5) includes a connecting rod (51) and an operating rod (52) arranged on the connecting rod (51); the connecting rod (51) includes a sliding groove (53) for being sleeved on the operating portion (3); two opposite groove walls of the sliding groove (53) are respectively provided with limiting blocks (54); two opposite side surfaces of the operating portion (3) are respectively provided with limiting grooves (32); the limiting grooves (32) on two adjacent circuit breaker poles (1) are arranged at intervals to form an insertion groove (34); The limiting block (54) can be moved along the second direction through the insertion slot (34) so ​​that the sliding slot (53) of the connecting rod (51) is sleeved on the operating portion (3) of the handle (2), and then the limiting block (54) can be moved along the first direction to a position aligned with the limiting slot (32), so that the limiting block (54) can slide into the limiting slot (32) of the handle (2) for limited engagement, and the second direction is perpendicular to the first direction.

2. The circuit breaker with a detachable operating lever according to claim 1, wherein: The operating portion (3) comprises a protruding portion (35) and a relief portion (36), the protruding portion (35) and the relief portion (36) being adjacently arranged along the width direction of the circuit breaker pole (1), i.e., a first direction; the thickness of the relief portion (36) in a direction perpendicular to the width direction of the circuit breaker pole (1) is less than the thickness of the protruding portion (35); and the insertion groove (34) is formed between the relief portion (36) and the protruding portions (35) of two adjacent operating portions (3).

3. The circuit breaker with a detachable operating lever according to claim 2, wherein: The length of the operating portion (3) in the width direction of the circuit breaker pole (1) is equal to the width of the circuit breaker pole (1), and the length of the protrusion (35) in the width direction of the circuit breaker pole (1) is equal to half the length of the operating portion (3).

4. The circuit breaker with a detachable operating lever according to claim 2, wherein: An inclined transition surface (37) is provided at one end of the limiting groove (32) close to the avoidance portion (36), and the transition surface (37) is arranged inclined relative to the width direction of the circuit breaker pole (1).

5. The circuit breaker with a detachable operating lever according to claim 1, wherein: The limiting block (54) comprises a transverse limiting portion (55), the transverse limiting portion (55) being arranged parallel to the width direction of the circuit breaker pole (1), and the transverse limiting portion (55) being inserted into the limiting groove (32) for limiting engagement.

6. The circuit breaker with a detachable operating lever according to claim 2, wherein: A second limiting block (56) is provided in the sliding groove (53), and the second limiting block (56) includes a transverse limiting portion (55) arranged parallel to the width direction of the circuit breaker pole (1), and a longitudinal limiting portion (57) arranged perpendicular to the transverse limiting portion (55). The transverse limiting portion (55) is inserted into the limiting groove (32) for limiting engagement, and the longitudinal limiting portion (57) is outside the limiting groove (32) for limiting engagement with the protrusion (35).

7. The circuit breaker with a detachable operating lever according to claim 6, wherein: The two opposite side walls at one end of the slide groove (53) are both provided with the limiting blocks (54), and the two opposite side walls at one end of the slide groove (53) away from the limiting blocks (54) are both provided with the second limiting blocks (56).

8. The circuit breaker with a detachable operating lever according to claim 7, wherein: The slide groove (53) is provided with a bottom wall connected between the two opposite side walls, and the bottom wall is provided with draft holes (58) corresponding to the limit block (54) and the second limit block (56) respectively.

9. The circuit breaker with a detachable operating lever according to claim 7, wherein: The avoidance portion (36) of the operating portion (3) is provided with a screw hole (38) for connecting a screw (6), and the connecting rod (51) is provided with a connecting hole (59) for passing the screw (6). After the screw (6) passes through the connecting rod (51) from the connecting hole (59), it is connected to the handle (2) through the screw hole (38).

10. The circuit breaker with a detachable operating lever according to claim 9, wherein: The handles (2) of two adjacent circuit breaker poles (1) are connected via a linkage member (4), and the length of the linkage member (4) is smaller than the distance between two adjacent screw holes (38).

11. The circuit breaker with a detachable operating lever according to claim 9, wherein: The operating rod (52) and the connecting hole (59) are respectively arranged at two ends of the connecting rod (51), and the operating rod (52) is perpendicular to the connecting rod (51).

12. The circuit breaker with a detachable operating lever according to claim 1, wherein: The radial cross-section of the linkage member (4) is rectangular, and the linkage hole (31) is provided with bosses (39) corresponding to the four side surfaces of the linkage member (4). When the linkage member (4) is inserted into the linkage hole (31), the four side surfaces of the linkage member (4) are in contact with the corresponding bosses (39).

13. The circuit breaker with a detachable operating lever according to claim 1, wherein: Two adjacent circuit breaker poles (1) are fixed by rivets (7), an annular positioning ring (8) is sleeved on the rivet (7), a rivet hole (11) for passing the rivet (7) and a positioning groove (12) for accommodating the positioning ring (8) are provided on the housing of the circuit breaker pole (1), and the rivet hole (11) is communicated with the bottom of the positioning groove (12).

14. The circuit breaker with a detachable operating lever according to claim 1, wherein: An assembling shaft (9) is provided between two adjacent circuit breaker poles (1); an assembling hole (13) for inserting the assembling shaft (9) is provided on the housing of the circuit breaker pole (1); two ends of the assembling shaft (9) are respectively inserted into the two adjacent circuit breaker poles (1) and respectively connected to the operating mechanisms of the two circuit breaker poles (1); when the operating mechanism of one circuit breaker pole (1) is tripped, the operating mechanism of the other circuit breaker pole (1) is driven to trip via the assembling shaft (9).

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