Button locking structure of circuit breaker and circuit breaker

Abstract

The button locking structure of the circuit breaker comprises a shell, a button, a limiting piece and a first elastic piece, the shell is provided with a first through hole, the button and the limiting piece are arranged in the shell in a sliding mode, the button can slide between a closing position and an opening position, and the limiting piece comprises a matching part and a limiting part arranged corresponding to the first through hole; the matching part comprises a first matching surface and a matching inclined surface which forms an inclined angle with the movement direction of the limiting piece; and the button comprises a locking surface and an acting inclined surface which are sequentially arranged along the closing direction of the button. The circuit breaker comprises a rotating shaft and the button locking structure of the circuit breaker. According to the button locking structure of the circuit breaker and the circuit breaker, when the circuit breaker is switched on, the button abuts against the matching inclined plane through the acting inclined plane to enable the limiting part to extend out of the shell to be in limiting fit with the cabinet, so that the circuit breaker cannot be inserted into the cabinet and cannot be taken out of the cabinet in a switched-on state; and during opening, the button gives way to the limiting part, so that the limiting part is driven by the first elastic part to retract into the shell, the structure is simple, and the unlocking action is reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of low-voltage apparatus, specifically relates to a button locking structure of circuit breaker and circuit breaker. BACKGROUND

[0002] Plug-in circuit breaker needs to be installed in cabinet for use, during installation and maintenance of circuit breaker, electric shock accidents often occur due to incorrect on-off, for example, installation or disassembly of circuit breaker in on state will cause electric shock accident etc. SUMMARY

[0003] The utility model discloses a button locking structure of circuit breaker and circuit breaker which overcome at least one defect of the prior art.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] The button locking structure of circuit breaker, including shell, button, limiting piece and first elastic part, the shell is equipped with first through -hole, and the button and limiting piece are respectively slidably arranged in the shell, the button can slide between on position and off position, the limiting piece includes cooperation portion and the limiting portion corresponding with first through -hole, the cooperation portion includes first cooperation face and cooperation inclined plane arranged with the oblique angle of limiting piece movement direction, and the button includes locking surface and action inclined plane arranged in turn along the on direction of button;

[0006] When the button slides to the on direction, the action inclined plane pushes the cooperation inclined plane to drive the limiting piece to make the limiting portion at least partially extend first through -hole, and to drive the first elastic part to store energy, when the button slides to the on position, the locking surface is limited with the first cooperation face, and is used for preventing the limiting portion from retracting first through -hole;

[0007] When the button slides to the off position, the locking surface is dislocated with the first cooperation face, so that the limiting piece can slide under the drive of the first elastic part, and thus the limiting portion retracts first through -hole.

[0008] Optionally, the movement direction of the button and the movement direction of the limiting piece are vertically arranged, and the locking surface and the first cooperation face are both flat surfaces, which are parallel to the movement direction of the button and perpendicular to the movement direction of the limiting piece.

[0009] Optionally, the shell is provided with a first stop surface, and the first stop surface and the first cooperation face are in abutment when the limiting portion retracts first through -hole.

[0010] Optionally, the cooperation portion and the limiting portion are arranged along the movement direction of the limiting piece, and the limiting portion and the locking surface are arranged on opposite sides of the cooperation portion.

[0011] Optionally, the locking member and the second elastic member are further included, the locking member is slidingly arranged in the shell, the shell is provided with a second through hole, the locking member comprises a locking portion and an acting portion corresponding to the second through hole, and the button comprises an avoiding space and a second matching surface arranged in sequence along the movement direction of the locking member.

[0012] When the button is located at the open position, the second elastic member is used to drive the locking member to make the acting portion at least partially extend out of the second through hole, and the locking portion is located on the path of the second matching surface moving to the closed position, so that the button cannot slide to the closed position.

[0013] The acting portion is used to be retracted into the second through hole by external force, so that the locking portion is dislocated from the second matching surface and corresponds to the avoiding space, and the button can slide to the closed position.

[0014] Optionally, the movement direction of the button and the movement direction of the locking member are arranged vertically; and the second matching surface is a plane, which is arranged parallel to the movement direction of the locking member and perpendicular to the movement direction of the button.

[0015] Optionally, the shell is provided with a second stop surface, and the locking member further comprises a stop portion corresponding to the second stop surface; when the acting portion extends out of the second through hole, the second stop surface and the stop portion are abutted and matched.

[0016] Optionally, the avoiding space is a chamber structure with one side opening, an avoiding notch is arranged on the side wall of the avoiding space from the opening side along the open direction, and the side wall opening side of the avoiding space is provided with two second matching surfaces located on both sides of the avoiding notch.

[0017] Optionally, the locking portion and the acting portion are arranged along the movement direction of the locking member, the locking portion has two locking wings protruding from both sides of the acting portion and corresponding to the two second matching surfaces, and the avoiding notch is used to avoid the acting portion.

[0018] Optionally, the second elastic member is a torsion spring, and the torsion center of the second elastic member is arranged vertically to the movement direction of the button and the movement direction of the locking member.

[0019] Optionally, the locking portion and the acting portion are arranged along the closing direction of the button, the locking portion is a straight plate structure arranged parallel to the movement direction of the button, the acting portion is a columnar structure arranged along the movement direction of the locking member in the height direction, and a reinforcing plate is arranged between the part of the acting portion higher than the locking portion and the locking portion, and the reinforcing plate is arranged corresponding to the avoiding notch.

[0020] Optionally, the second elastic member is a compression spring, and the elastic force direction of the second elastic member is arranged parallel to the movement direction of the locking member.

[0021] The circuit breaker comprises a rotating shaft arranged in a housing, a moving contact arranged on the rotating shaft, and the button locking structure of any one of the circuit breakers, wherein the button of the button locking structure is used to drive the rotating shaft to rotate, and the rotating shaft drives the moving contact to contact or separate from the static contact.

[0022] Optionally, the circuit breaker further comprises a cover arranged in the housing and an operating mechanism arranged in the cover, the button drives the rotating shaft to rotate through the operating mechanism, the operating mechanism comprises a driving wheel arranged in rotation, the cover is provided with a limiting block, the limiting block is provided with a first limiting surface and a second limiting surface used to limit the rotating stroke of the driving wheel and opposite to each other, and the driving wheel is provided with a first limiting protrusion and a second limiting protrusion which are respectively extended in a radial direction and matched with the first limiting surface and the second limiting surface.

[0023] The button locking structure of the circuit breaker and the circuit breaker of the utility model, when closing, the button pushes the matching inclined surface through the action inclined surface to make the limiting part extend out of the shell and limit the cooperation of the cabinet, realize that the circuit breaker cannot be inserted into the cabinet and cannot be taken out from the cabinet in the closing state, prevent electric shock accident, improve safety, and when opening, the button gives the limiting part to make the limiting part retract into the shell under the driving of the first elastic piece, without additional unlocking structure, simple structure, and reliable unlocking action.

[0024] In addition, the second matching surface on the button and the locking part of the locking piece cooperate to lock the button at the opening position, to prevent electric shock accidents caused by installing the circuit breaker in the closing state, improve safety, and the locking piece is applied to the action force of the action part during the process of installing the circuit breaker into the cabinet, so that the locking part enters the avoiding space to unlock the button, to realize the synchronous unlocking of the button during the process of installing the circuit breaker, without additional unlocking action. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the sectional view of the button, the limiting piece and the shell of the utility model when opening;

[0026] Figure 2 is the sectional view of the button, the limiting piece and the shell of the utility model when opening; Figure 1

[0027] Figure 3 is the sectional view of the button, the limiting piece and the shell of the utility model when opening;

[0028] Figure 4 is the sectional view of the button, the limiting piece and the shell of the utility model when opening; Figure 3

[0029] Figure 5 is the sectional view of the button, the limiting piece and the shell of the utility model when opening;

[0030] Figure 6 ​​Is the structure diagram of the limiting piece of the utility model;

[0031] Figure 7 Is the structure diagram of the button, locking piece and shell of the utility model;

[0032] Figure 8 Is the sectional view of the button, locking piece and shell of the utility model;

[0033] Figure 9 Is the sectional view of the button and the locking piece and the second elastic piece of embodiment one when the utility model is opened;

[0034] Figure 10 Is the partial structure enlarged view of the utility model Figure 9 ;

[0035] Figure 11 Is the structure diagram of the button and the locking piece of embodiment one when the utility model is opened;

[0036] Figure 12 Is the sectional view of the button and the locking piece and the second elastic piece of embodiment one when the utility model is closed;

[0037] Figure 13 Is the partial structure enlarged view of the utility model Figure 12 ;

[0038] Figure 14 Is the structure diagram of the button and the locking piece of embodiment one when the utility model is closed;

[0039] Figure 15 Is the structure diagram of the locking piece of embodiment one of the utility model;

[0040] Figure 16 Is the sectional view of the button and the locking piece and the second elastic piece of embodiment two when the utility model is opened;

[0041] Figure 17 Is the partial structure enlarged view of the utility model Figure 16 ;

[0042] Figure 18 Is the structure diagram of the button and the locking piece of embodiment two when the utility model is opened;

[0043] Figure 19 Is the sectional view of the button and the locking piece and the second elastic piece of embodiment two when the utility model is closed;

[0044] Figure 20 Is the partial structure enlarged view of the utility model Figure 19 ;

[0045] Figure 21is the structure schematic view of the locking piece of the embodiment two of the utility model;

[0046] Figure 22 is the structure schematic view of the locking piece of the embodiment two of the utility model;

[0047] Figure 23 is the structure schematic view of the cover of the utility model;

[0048] Figure 24 is the structure schematic view of the driving wheel of the utility model;

[0049] Figure 25 is the structure schematic view of the cover of the utility model circuit breaker hidden shell and cover.

[0050] Shell 1;First through hole 11;Second through hole 12;Second limit column 13;Second stop surface 14;Block 15;Button 2;Locking surface 21;Action inclined surface 22;Avoidance space 23;Second matching surface 24;Avoidance notch 25;Anti-pulling convex 26;Limiting piece 3;Matching part 31;First matching surface 311;Matching inclined surface 312;Limiting part 32;First limit column 33;First elastic piece 4;Locking piece 5;Locking part 51;Locking wing 511;Action part 52;Connecting hole 521;Limiting groove 522;Stop part 53;Reinforcing plate 54;Second elastic piece 6;Wire pressing terminal 7;First stop surface 71;Driving wheel 81;First limit convex 811;Second limit convex 812;First connecting rod 82;Second connecting rod 83;Jump buckle 84;Locking buckle 85;Pivot 86;Electric mechanism 87;Motor 871;Worm 872;Worm wheel 873;Gear set 874;Cover 9;First limiting surface 911;Second limiting surface 912. DETAILED DESCRIPTION

[0051] The following embodiments given in combination with the accompanying drawings further illustrate the specific embodiments of the utility model circuit breaker button locking structure and circuit breaker. The utility model circuit breaker button locking structure and circuit breaker are not limited to the following embodiment description.

[0052] As Figure 1 And Figure 7 Indicated, the circuit breaker of the embodiment, including shell 1, the contact system of setting in shell 1, the contact system includes movable contact and static contact, button 2 can slide between the closing position and the opening position, the button 2 is used to drive movable contact and static contact contact or separate, button 2 moves to the closing position, drive movable contact and static contact contact, button 2 moves to the opening position, drive movable contact and static contact separate.

[0053] The circuit breaker further comprises a button locking structure, which comprises the shell 1, the button 2, the limiting piece 3 and the first elastic piece 4, the shell 1 is provided with a first through hole 11 and a second through hole 12, and the button 2 and the limiting piece 3 are respectively slidingly arranged in the shell 1.

[0054] As shown in Figure 1 and Figure 2 , the limiting piece 3 of the embodiment comprises a matching part 31 and a limiting part 32 arranged corresponding to the first through hole 11, the matching part 31 comprises a first matching surface 311 and a matching inclined surface 312 arranged at an inclined angle with the movement direction of the limiting piece 3, and the button 2 comprises a locking surface 21 and an acting inclined surface 22 arranged in sequence along the closing direction of the button 2.

[0055] As shown in Figure 3 and Figure 4 , when the button 2 slides to the closing direction, the acting inclined surface 22 pushes the matching inclined surface 312 to drive the limiting piece 3 to make the limiting part 32 at least partially extend out of the first through hole 11, and to drive the first elastic piece 4 to store energy, and when the button 2 slides to the closing position, the locking surface 21 is limited and matched with the first matching surface 311, so as to prevent the limiting part 32 from retracting into the first through hole 11, at this time, the extending part of the limiting part 32 is limited and matched with the cabinet, so that the circuit breaker which is not installed cannot be inserted into the cabinet or the circuit breaker installed in the cabinet cannot be taken out of the cabinet;

[0056] As shown in Figure 1 and Figure 2 , when the button 2 slides to the opening position, the locking surface 21 is dislocated with the first matching surface 311 and the acting inclined surface 22 corresponds to the matching inclined surface 312, so that the limiting piece 3 can slide under the drive of the first elastic piece 4, so that the limiting part 32 retracts into the first through hole 11, at this time, the limiting part 32 is disengaged from the limiting cooperation with the cabinet, so that the circuit breaker which is not installed can be inserted into the cabinet or the circuit breaker installed in the cabinet can be taken out of the cabinet.

[0057] The button locking structure of the circuit breaker and the circuit breaker of the embodiment, when closing, the button 2 pushes the matching inclined surface 312 through the acting inclined surface 22 to make the limiting part 32 extend out of the shell 1 and be limited and matched with the cabinet, so as to prevent the circuit breaker from being inserted into the cabinet and taken out of the cabinet in the closed state, to prevent electric shock accidents and improve safety, and when opening, the button 2 gives the limiting piece 3 a space to make the limiting part 32 retract into the shell 1 under the drive of the first elastic piece 4, without additional unlocking structure, simple structure and reliable unlocking action.

[0058] As shown in Figure 5As shown in the drawings, the housing 1 is provided with a first stop surface 71; when the limiting part 32 is retracted into the first through hole 11, the limiting part 3 is driven by the first elastic part 4 to slide until the first stop surface 71 and the first matching surface 311 are matched. The first stop surface 71 is provided to support the limiting part 3 and stop the retraction movement. As an example, the housing 1 is provided with a wire pressing terminal 7 corresponding to the limiting part 3, and the side of the wire pressing terminal 7 facing the limiting part 3 is the first stop surface 71.

[0059] As shown in the drawings, Figure 2 and Figure 4 The movement direction of the button 2 and the movement direction of the limiting part 3 are arranged vertically; the locking surface 21 and the first matching surface 311 are both flat surfaces, arranged parallel to the movement direction of the button 2 and perpendicular to the movement direction of the limiting part 3. The button 2 and the limiting part 3 are arranged compactly, and the matching structure between the button 2 and the limiting part 3 is simple and easy to form. Of course, the movement direction of the button 2 and the movement direction of the limiting part 3 can also be arranged at other angles.

[0060] As other embodiments, the locking surface 21 and the first matching surface 311 can not both be flat surfaces or not both be flat surfaces, and the locking surface 21 and the first matching surface 311 form a cam structure, for example, one is arranged as a flat surface, and the other is arranged as a spherical surface, an arc surface or other non-flat surface structure.

[0061] As shown in the drawings, Figure 6 The matching part 31 and the limiting part 32 are arranged along the movement direction of the limiting part 3, and the limiting part 32 and the locking surface 21 are arranged on opposite sides of the matching part 31.

[0062] As shown in the drawings, Figure 4 and Figure 5 The first elastic part 4 is a compression spring, and the elastic force direction of the first elastic part 4 is arranged parallel to the movement direction of the limiting part 3. As an example, the side of the matching part 31 where the limiting part 32 is located is provided with a first limiting column 33, the housing 1 is provided with a second limiting column 13 opposite to the first limiting column 33, one end of the first elastic part 4 is sleeved on the first limiting column 33, and the other end of the first elastic part 4 is sleeved on the second limiting column 13. Of course, the first elastic part 4 can also be a torsion spring, a spring piece, an elastic structure integrally formed on the limiting part 3, etc.

[0063] As shown in the drawings, Figure 10 and Figure 11 The button 2 is provided with a pull-out prevention protrusion 26, and the housing 1 is provided with a blocking part 15 corresponding to the pull-out prevention protrusion 26. When the button 2 slides to the open position in the opening direction, the blocking part 15 and the pull-out prevention protrusion 26 are matched to prevent the button 2 from being completely pulled out of the housing 1.

[0064] AsFigure 12-13 The first embodiment shown in the figure or Figure 19-20 The second embodiment shown in the figure, the button locking structure of the circuit breaker of the embodiment further comprises a locking member 5 and a second elastic member 6, the locking member 5 is slidingly arranged in the shell 1, the locking member 5 comprises a locking portion 51 and an acting portion 52 arranged corresponding to the second through hole 12, the button 2 comprises a second matching surface 24 and a avoiding space 23 arranged in sequence along the movement direction of the locking member 5.

[0065] As Figure 10-11 The first embodiment shown in the figure or Figure 17-18 The second embodiment shown in the figure, when the button 2 is located at the open position, the second elastic member 6 is used to drive the locking member 5 to make the acting portion 52 at least partially extend into the second through hole 12, and the locking portion 51 is located on the path of the button 2 moving to the closed position, so that the button 2 cannot slide to the closed position; as Figure 13-14 The first embodiment shown in the figure or Figure 20-21 The second embodiment shown in the figure, the acting portion 52 is used to be retracted into the second through hole 12 by external force, so that the locking portion 51 is dislocated from the second matching surface 24 and corresponds to the avoiding space 23, so that the button 2 can slide to the closed position. The second matching surface 24 on the button 2 and the locking portion 51 of the locking member 5 cooperate to lock the button 2 at the open position, so as to prevent electric shock accidents caused by installing the circuit breaker in the closed state, improve safety, and apply force to the acting portion 52 of the locking member 5 during the process of installing the circuit breaker into the cabinet, so that the locking portion 51 enters the avoiding space 23 to unlock the button 2, so as to realize the synchronous unlocking of the button 2 in the process of installing the circuit breaker, without the need for additional unlocking action.

[0066] As Figure 10 The first embodiment shown in the figure or Figure 17 The second embodiment shown in the figure, the shell 1 is provided with a second stop surface 14, and the locking member 5 further comprises a stop portion 53 arranged corresponding to the second stop surface 14; when the acting portion 52 extends out of the second through hole 12, the locking member 5 slides under the drive of the second elastic member 6 until the second stop surface 14 and the stop portion 53 are in abutting cooperation, so as to prevent the locking member 5 from completely coming out.

[0067] As Figure 10 , Figure 13 The first embodiment shown in the figure or Figure 17 , Figure 20 The second embodiment shown in the figure, the movement direction of the button 2 and the movement direction of the locking member 5 are arranged perpendicularly; the second matching surface 24 is a plane, which is arranged parallel to the movement direction of the locking member 5 and perpendicular to the movement direction of the button 2. Of course, the movement direction of the button 2 and the movement direction of the locking member 5 can also be arranged at other angles. The second matching surface 24 can also be arranged as an arc surface or other structures.

[0068] As Figure 11、 Figure 14 the first embodiment shown in Figure 18 、 Figure 21 the second embodiment shown in

[0069] The locking member 5 and the second elastic member 6 have at least two embodiments, such as Figure 11 and Figure 15 the first embodiment shown in

[0070] In this embodiment, the second elastic member 6 is a torsion spring, and the torsion center of the second elastic member 6 is arranged perpendicularly to the movement direction of the button 2 and the movement direction of the locking member 5, respectively. The action part 52 is provided with a connecting hole 521, one end of the second elastic member 6 is inserted into the connecting hole 521, and the other end of the second elastic member 6 is fixed, for example, abutting connection with a suitable position of the shell 1.

[0071] the second embodiment shown in Figure 18 and Figure 22 the first embodiment shown in

[0072] In this embodiment, the second elastic member 6 is a compression spring, and the elastic force direction of the second elastic member 6 is arranged in parallel with the movement direction of the locking member 5. The action part 52 of the locking member 5 is provided with a limiting groove 522 extending along the movement direction of the locking member 5. One end of the second elastic member 6 is placed in the limiting groove 522, and the other end of the second elastic member 6 is fixed, for example, abutting connection with a suitable position of the shell 1.

[0073] As Figure 23-25 shown, the circuit breaker of the embodiment further comprises a cover 9 installed in the shell 1 and an operating mechanism installed in the cover 9, and a rotating shaft 86 provided with a movable contact is arranged, the button 2 drives the rotating shaft 86 to rotate through the operating mechanism, the operating mechanism comprises a driving wheel 81 arranged in rotation, the cover 9 is provided with a limiting lug, the limiting lug is provided with a first limiting surface 911 and a second limiting surface 912 for limiting the rotation stroke of the driving wheel 81, and the driving wheel 81 is respectively provided with a first limiting protrusion 811 matched with the first limiting surface 911 and a second limiting protrusion 812 matched with the second limiting surface 912 in the radial direction. Figure 25 As shown, when the circuit breaker is closed, the driving wheel 81 rotates counterclockwise to the first limiting protrusion 811 in contact with the first limiting surface 911; when the circuit breaker is opened, the driving wheel 81 rotates clockwise to the second limiting protrusion 812 in contact with the second limiting surface 912.

[0074] It should be noted that the cooperation structure between the operating mechanism and the button 2 and the rotating shaft 86 is prior art, the operating mechanism usually further comprises a first connecting rod 82 hinged between the button 2 and the driving wheel 81, a jump catch 84 and a lock catch 85 arranged in rotation on the rotating shaft 86 and connected by snap, a second connecting rod 83 hinged between the driving wheel 81 and the jump catch 84, the button 2 linearly slides, the button 2 drives the driving wheel 81 to rotate through the first connecting rod 82, the driving wheel 81 drives the second connecting rod 83 to rotate the rotating shaft 86, which will not be described here. In addition, the circuit breaker can also be provided with an electric mechanism 87 for realizing automatic opening and closing, an overload protection mechanism, a short circuit protection mechanism, etc., the electric mechanism 87 is prior art, usually comprising a motor 871, a worm 872, a worm gear 873 and a gear set 874, the last stage gear of the gear set 874 is coaxially arranged with the driving wheel 81, the motor 871 drives the worm 872 to rotate the gear set 874 through the worm gear 873, and then drives the driving wheel 81 to rotate.

[0075] As Figure 25 shown, the circuit breaker of the embodiment has manual opening and closing function and automatic opening and closing function, and the specific process of opening and closing of the circuit breaker is as follows:

[0076] When manually closing, the button 2 is pushed, the button 2 drives the driving wheel 81 to rotate counterclockwise through the first connecting rod 82, the driving wheel 81 drives the jump catch 84 through the second connecting rod 83, so that the jump catch 84 and the lock catch 85 are buckled and connected to drive the rotating shaft 86 to close, when the operating mechanism moves through the dead point position, the operating mechanism is self-locked, that is, the jump catch 84 and the lock catch 85 are kept in the stable state of buckling cooperation.

[0077] When the switch is manually opened, the button is pulled, the button 2 drives the driving wheel 81 to rotate clockwise through the first connecting rod 82, the driving wheel 81 drives the second connecting rod 83, thereby driving the rotating shaft 86, when the operating mechanism moves through the dead point position, the operating mechanism is unlocked, that is, the jump buckle 84 and the lock buckle 85 are uncoupled.

[0078] When the switch is automatically closed, the motor 871 drives the worm 872, the worm wheel 873 drives the gear set 874, the last stage gear cooperates with the driving wheel 81 to make the driving wheel 81 rotate counterclockwise to complete the closing, and the motor 871 reverses to make the last stage gear return to the free position, thereby completing the manual separation, that is, the last stage gear does not interfere with the driving wheel 81 to perform the manual opening.

[0079] When the switch is automatically opened, the motor 871 drives the worm 872, the worm wheel 873 drives the gear set 874, the last stage gear cooperates with the driving wheel 81 to make the driving wheel 81 rotate clockwise to complete the opening, and the motor 871 reverses to make the last stage gear return to the free position, thereby completing the manual separation, that is, the last stage gear does not interfere with the driving wheel 81 to perform the manual closing.

[0080] As other embodiments, the operating mechanism can be a four-link or five-link structure, and the movable contact is arranged on a contact support of the operating mechanism, which is prior art and will not be described here.

[0081] It should be noted that in the description of the utility model, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship commonly used in use, and are only for the convenience of description, and do not indicate that the device or element referred to must have a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating relative importance.

[0082] The above is a further detailed description of the utility model in combination with specific preferred embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, which should be regarded as falling within the protection scope of the utility model.

Claims

1. A button locking structure for a circuit breaker, comprising a housing (1), a button (2), a limiting member (3) and a first elastic member (4), wherein the housing (1) is provided with a first through hole (11), the button (2) and the limiting member (3) are respectively slidably arranged in the housing (1), the button (2) can slide between a closing position and an opening position, the limiting member (3) comprises a matching portion (31) and a limiting portion (32) arranged corresponding to the first through hole (11), and is characterized in that: The matching portion (31) includes a first matching surface (311) and a matching inclined surface (312) arranged at an oblique angle to the movement direction of the limiter (3); the button (2) includes a locking surface (21) and an action inclined surface (22) arranged in sequence along the closing direction of the button (2); When the button (2) slides in the closing direction, the action inclined surface (22) pushes against the matching inclined surface (312) to drive the limiting member (3) so that the limiting portion (32) at least partially extends out of the first through hole (11), and is used to drive the first elastic member (4) to store energy. When the button (2) slides to the closing position, the locking surface (21) and the first matching surface (311) are limitedly matched to prevent the limiting portion (32) from retracting into the first through hole (11); When the button (2) slides in the opening direction to the opening position, the locking surface (21) and the first matching surface (311) are misaligned, so that the limiting member (3) can slide under the drive of the first elastic member (4), so that the limiting portion (32) retracts into the first through hole (11).

2. The button locking structure of the circuit breaker according to claim 1, characterized in that: The movement direction of the button (2) and the movement direction of the limiting member (3) are arranged perpendicularly; the locking surface (21) and the first matching surface (311) are both planes, arranged parallel to the movement direction of the button (2) and perpendicular to the movement direction of the limiting member (3).

3. The button locking structure of the circuit breaker according to claim 1, characterized in that: A first stop surface (71) is provided in the housing (1); when the limiting portion (32) retracts into the first through hole (11), the first stop surface (71) and the first matching surface (311) are in abutment with each other.

4. The button locking structure of the circuit breaker according to claim 1, characterized in that: The matching portion (31) and the limiting portion (32) are arranged along the movement direction of the limiting member (3), and the limiting portion (32) and the locking surface (21) are arranged on opposite sides of the matching portion (31).

5. The button locking structure of the circuit breaker according to claim 1, characterized in that: The invention also comprises a locking member (5) and a second elastic member (6), wherein the locking member (5) is slidably arranged in the housing (1), the housing (1) is provided with a second through hole (12), the locking member (5) comprises a locking portion (51) and an action portion (52) arranged corresponding to the second through hole (12), and the button (2) comprises an avoidance space (23) and a second matching surface (24) arranged in sequence along the movement direction of the locking member (5); When the button (2) is in the opening position, the second elastic member (6) is used to drive the locking member (5) so that the action portion (52) at least partially extends out of the second through hole (12), and the locking portion (51) is located on the path of the second matching surface (24) moving toward the closing position, so that the button (2) cannot slide toward the closing position; The action portion (52) is used to retract into the second through hole (12) under external force, so that the locking portion (51) is misaligned with the second matching surface (24) and corresponds to the avoidance space (23), allowing the button (2) to slide toward the closing position.

6. The button locking structure of the circuit breaker according to claim 5, characterized in that: The movement direction of the button (2) and the movement direction of the locking member (5) are arranged perpendicularly; the second matching surface (24) is a plane, arranged parallel to the movement direction of the locking member (5) and perpendicular to the movement direction of the button (2).

7. The button locking structure of a circuit breaker according to claim 5, characterized in that: A second stop surface (14) is provided in the housing (1), and the locking member (5) further comprises a stop portion (53) provided corresponding to the second stop surface (14); when the action portion (52) extends out of the second through hole (12), the second stop surface (14) and the stop portion (53) are in abutment with each other.

8. The button locking structure of the circuit breaker according to claim 5, characterized in that: The avoidance space (23) is a chamber structure with an opening on one side, and a sidewall of the avoidance space (23) is provided with a avoidance notch (25) extending from the opening side along the gate opening direction, and the sidewall opening side of the avoidance space (23) is provided with two second matching surfaces (24) located on both sides of the avoidance notch (25).

9. The button locking structure of the circuit breaker according to claim 8, characterized in that: The locking portion (51) and the action portion (52) are arranged along the movement direction of the locking member (5); the locking portion (51) has two locking wings (511) protruding from both sides of the action portion (52) and corresponding to the two second matching surfaces (24); and the avoidance notch (25) is used to avoid the action portion (52).

10. The button locking structure of the circuit breaker according to claim 9, characterized in that: The second elastic member (6) is a torsion spring, and the torsion center of the second elastic member (6) is respectively arranged perpendicular to the movement direction of the button (2) and the movement direction of the locking member (5).

11. The button locking structure of a circuit breaker according to claim 8, characterized in that: The locking portion (51) and the action portion (52) are arranged along the closing direction of the button (2); the locking portion (51) is a straight plate structure arranged in parallel with the movement direction of the button (2); the action portion (52) is a columnar structure arranged in the height direction along the movement direction of the locking member (5); a reinforcing plate (54) is arranged between the portion of the action portion (52) that is higher than the locking portion (51) and the locking portion (51); the reinforcing plate (54) is arranged corresponding to the avoidance notch (25).

12. The button locking structure of a circuit breaker according to claim 11, characterized in that: The second elastic member (6) is a compression spring, and the elastic force direction of the second elastic member (6) is arranged parallel to the movement direction of the locking member (5).

13. A circuit breaker comprising a rotating shaft (86) rotatably arranged in a housing (1), wherein a moving contact is arranged on the rotating shaft (86), characterized in that: The circuit breaker further comprises a button locking structure of the circuit breaker according to any one of claims 1 to 12, wherein the button (2) of the button locking structure of the circuit breaker is used to drive the rotating shaft (86) to rotate, and the rotating shaft (86) drives the moving contact to contact or separate from the static contact.

14. The circuit breaker according to claim 13, wherein: The invention also includes a cover shell (9) installed in the housing (1) and an operating mechanism installed in the cover shell (9); the button (2) drives the rotating shaft (86) to rotate through the operating mechanism; the operating mechanism includes a rotatable driving wheel (81); the cover shell (9) is provided with a limiting protrusion; the limiting protrusion is provided with a first limiting surface (911) and a second limiting surface (912) that are opposite to each other and are used to limit the rotation stroke of the driving wheel (81); the driving wheel (81) is provided with a first limiting protrusion (811) that cooperates with the first limiting surface (911) and a second limiting protrusion (812) that cooperates with the second limiting surface (912) in a radial direction.

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