Locking mechanism and electrical device

Abstract

The utility model provides a locking mechanism. The locking mechanism comprises a shell; the moving part is configured to move between an opening position and a closing position relative to the shell; the operating part is configured to pivot relative to the shell, the operating part is pivoted to an actuating position along a first pivoting direction, and when the operating part is located at the actuating position, the moving part is locked at the opening position; and the latch piece is connected with the moving piece, when the moving piece is located at the opening position, the latch piece is located at the unlocking position, and when the moving piece is located at the closing position, the latch piece is located at the locking position. Wherein the latch piece comprises a latch part, and the operating piece comprises a locking part section configured to be matched with the latch piece. When the latch piece is located at the unlocking position, the latch part does not block pivoting of the operating piece, and when the latch piece is located at the locking position, the latch part is located on a pivoting movement path of the locking part section in the first pivoting direction, so that the operating piece is prevented from moving to the actuating position. The utility model further provides an electrical device comprising the locking mechanism.

Description

Technical Field

[0001] The present disclosure relates to the electrical field, and in particular to a locking mechanism and an electrical device comprising the locking mechanism. Background Art

[0002] Circuit breakers can be used to connect and disconnect load circuits and are an important protective electrical device. For some circuit breakers, a circuit breaker locking mechanism is required. The circuit breaker locking mechanism is a device used to limit or prevent the operation of the circuit breaker in the circuit. It can effectively fix the circuit breaker in the disconnected position to prevent others from operating it at will. This is very important for repairing and overhauling circuits and ensuring the safety of personnel.

[0003] However, the existing circuit breaker locking mechanism only has the function of locking the circuit breaker in the open state and preventing it from closing. When the circuit breaker is in the closed state, misoperation of the locking mechanism may cause the circuit breaker to be mistakenly opened, which will bring great operational risks and affect the normal production and life.

[0004] Therefore, a stable and safe locking mechanism is needed to solve these problems. Utility Model Content

[0005] The purpose of the present disclosure is to at least solve the shortcomings existing in the prior art. The present disclosure proposes a locking mechanism, including a housing; a moving member, configured to move between an opening position and a closing position relative to the housing; an operating member, configured to pivot relative to the housing, the operating member pivots to an actuating position along a first pivoting direction, and when the operating member is in the actuating position, the moving member is locked in the opening position; a latch member, connected to the moving member, when the moving member is in the opening position, the latch member is in an unlocking position, and when the moving member is in the closing position, the latch member is in a locking position. The latch member includes a latch portion, and the operating member includes a locking section configured to cooperate with the latch member. When the latch member is in the unlocking position, the latch portion does not block the pivoting of the operating member, and when the latch member is in the locking position, the latch portion is located on the pivoting motion path of the locking section along the first pivoting direction, thereby blocking the operating member from moving to the actuating position.

[0006] According to the locking mechanism disclosed in the present invention, when the moving part is in the opening position, the moving part can be locked in the opening position; when the moving part is in the closing position, the operating part can be prevented from being placed in the actuating position, thereby preventing the undesired "false opening", that is, when the moving part is in the closing position, the operating part is mistakenly operated to cause the moving part to move to the opening position. Thus, the electrical device including the locking mechanism has stable opening locking and closing locking functions.

[0007] For example, according to some embodiments of the present disclosure, the operating member also includes an actuating section and a transition section located between the actuating section and the locking section, and the locking mechanism also includes an interlocking assembly, and the interlocking assembly is configured to abut against the transition section or the actuating section, and when the operating member pivots along a first pivot direction, the interlocking assembly changes from abutting against the transition section to abutting against the actuating section, and the interlocking assembly is actuated so that the moving member is locked in the open position by the interlocking assembly.

[0008] For example, according to some embodiments of the present disclosure, the operating member includes a cam portion and an operating portion that pivot synchronously, the operating portion is configured to be operated by a force outside the shell to pivot the operating member, and the locking section, the transition section and the actuating section are sections on the circumferential outer edge of the cam portion.

[0009] For example, according to some embodiments of the present disclosure, a distance between a point on the transition section and the pivot axis of the operating member is less than or equal to a distance between a point on the actuating section and the pivot axis of the operating member.

[0010] For example, according to some embodiments of the present disclosure, the latch member is pivotally connected to the housing to pivot between a locked position and an unlocked position, the pivot axis of the latch member is perpendicular to the pivot axis of the operating member, and the latch portion extends toward the operating member along the direction of the pivot axis of the latch member.

[0011] For example, according to some embodiments of the present disclosure, when the latch member is in the unlocked position, the latch portion and the cam portion have a gap along the pivot axis direction of the operating member so that the latch portion does not block the pivoting of the operating member; when the latch member is in the locked position, the latch portion and the cam portion are aligned along the pivot axis direction of the operating member.

[0012] For example, according to some embodiments of the present disclosure, the cam portion is further provided with an idle motion segment, and the distance between a point on the idle motion segment and the pivot axis of the operating member is less than or equal to the distance between a point on the locking segment and the pivot axis of the operating member, and when the latch member is in the locked position, the pivoting of the operating member along the first pivot direction causes the idle motion segment to pass through the latch portion until the locking segment is blocked by the latch portion.

[0013] For example, according to some embodiments of the present disclosure, when the operating member is located at a position where the locking section is blocked by the latch portion, the transition section abuts against the interlocking assembly.

[0014] For example, according to some embodiments of the present disclosure, a connecting member is further included, and the moving member drives the latch member to pivot through the connecting member.

[0015] The present disclosure also proposes an electrical device, comprising the locking mechanism according to any one of the embodiments of the present disclosure, wherein when the moving part is in an open position, the electrical device is electrically isolated; and when the moving part is in a closed position, the electrical device is electrically conductive.

[0016] For example, according to some embodiments of the present disclosure, the electrical device is a circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1a A schematic plan view of a locking mechanism according to an embodiment of the present disclosure viewed along a second direction is shown, wherein the moving member is located in an opening position and the interlocking assembly is in an unactivated state;

[0018] Figure 1b The first direction is shown according to Figure 1a A schematic plan view of the locking mechanism in the state shown;

[0019] Figure 2a A schematic plan view of the locking mechanism according to the present disclosure viewed along a second direction is shown, wherein the moving member is located in an opening position and the interlocking assembly is in an actuated state;

[0020] Figure 2b The first direction is shown according to Figure 2a A schematic plan view of the locking mechanism in the state shown;

[0021] Figure 3 Shows the basis for observation along the third direction Figures 1a to 2b A plan view of a cam portion of an operating member;

[0022] Figure 4a A schematic plan view of the locking mechanism according to the present disclosure viewed along a second direction is shown, wherein the moving member is located in a closing position;

[0023] Figure 4b and Figure 4c The following diagrams are respectively shown based on the observation along the first direction: Figure 4a The schematic diagram of the two sub-states of the locking mechanism of the state shown, wherein Figure 4b The hollow section is opposite to the latch section. Figure 4c The middle locking section abuts against the latch portion;

[0024] Figure 5 A perspective schematic diagram showing a latch member of a locking mechanism according to the present disclosure;

[0025] Figure 6 A schematic plan view of a cam portion of an operating member according to the present disclosure is shown.

[0026] Reference numerals

[0027] 1 moving parts,

[0028] 2 operating member, 21 cam portion, 211 locking section, 212 transition section, 213 actuating section, 214 idle section, 22 operating portion,

[0029] 3 latch member, 31 latch portion, 32 matching portion,

[0030] 4 interlocking components,

[0031] 5 Connecting parts,

[0032] 6 Shell DETAILED DESCRIPTION

[0033] In order to make the purpose, scheme and advantages of the technical solution of the present disclosure clearer, the technical solution of the embodiment of the present disclosure will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present disclosure. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0034] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0035] For the convenience of description, in the present disclosure, the extending direction of the pivot axis of the operating member is designated as the first direction D1, the extending direction of the pivot axis of the latch member is designated as the second direction D2, in particular, the first direction D1 is perpendicular to the second direction D2, and the third direction D3 is designated as the direction perpendicular to the first direction D1 and the second direction D2. Figures 1a to 4c Indicated by arrows.

[0036] Figure 1a and Figure 1b Schematic diagrams of the locking mechanism according to the embodiment of the present disclosure are shown in plan view along the second direction D2 and along the first direction D1, respectively, wherein the moving part is located in the unlocking position. Figure 1a and Figure 1b It can be seen that the locking mechanism may include a housing 6, a moving part 1, an operating part 2, a latch part 3, an interlocking assembly 4 and a connecting part 5. The housing 5 may have two walls perpendicular to each other, such as Figure 1b and Figure 3 As shown, it is used to install the moving part 3, the operating part 2, the latch part 3 and the interlocking assembly 4.

[0037] The moving part 1 is mounted on the housing 6 and is configured to be movable relative to the housing 6 in an open position (such as Figure 1a and Figure 2a as shown) and the closing position (as shown Figure 4a ) between. In particular, Figure 1a As shown, the moving member 1 is pivotally mounted on the housing 6 so as to pivot relative to the housing 6 .

[0038] The operating member 2 is mounted on the housing 6, for example, it can be pivotally mounted to the housing 6. For example, the operating member 2 may have an operating portion 22 and a cam portion 21, and the operating portion 22 may be located outside the housing 6, so that the operating portion 22 can be actuated by an external force, thereby driving the cam portion 21 to rotate. The cam portion 21 is used to cooperate with other components. Specifically, different sections are arranged on it, and different sections have different distances from the pivot axis of the operating member 2. Therefore, different cooperation states with other components (such as the interlocking assembly 4) can be achieved by pivoting the cam portion. For example, the pivoting of the operating member 2 along the first pivoting direction can cause the moving member 1 to be locked in the open position, for example, the interlocking assembly 4 causes the moving member 1 to be locked in the open position.

[0039] Specifically, the cam portion 21 may include a locking section 211, a transition section 212, an actuation section 213, and an idle section 214, all of which refer to sections on the circumferential outer edge of the cam portion 21. Figure 6 For example, the transition section 212 may be located between the actuation section 213 and the locking section 211 , and the locking section 211 may be located between the idle travel section 214 and the transition section 212 .

[0040] Combination Figures 1a to 2b It can be understood that the distance between a point on the transition section 212 and the pivot axis of the operating member 2 can be less than or equal to the distance between a point on the actuating section 213 and the pivot axis of the operating member 2. For example, the actuating section 213 and the transition section 212 can be used to cooperate with the interlocking assembly 4, thereby achieving a change in the state of the interlocking assembly 4, such as causing it to be actuated.

[0041] For example, the interlocking assembly 4 can be configured to abut against the transition section 212 or the actuating section 213, and the interlocking assembly 4 can be configured so that the moving part 1 is locked in the open position when it is in the actuated state. The specific implementation of this locking is prior art in this field and is not further elaborated.

[0042] like Figure 1a As shown, the interlocking assembly 4 abuts against the transition section 212. In this state, the interlocking assembly 4 is in an unactivated state; Figure 2aAs shown, the interlocking assembly 4 abuts against the actuating section 213, and this position is called the actuating position of the interlocking assembly 4. In this position, the interlocking assembly 4 is in an actuating state, locking the moving member 1 in the off position. Figure 1b and Figure 2b (in the clockwise direction), the interlocking assembly 4 changes from abutting against the transition section 212 to abutting against the actuating section 213, that is, the cam portion 2 changes from Figure 1b The state shown pivots to Figure 2b In the state shown, the interlocking assembly 4 is lifted up and actuated (eg Figure 2a As shown in FIG. 1 , the moving part 1 is locked in the opening position by the interlocking assembly 4. Thus, when the moving part is in the opening position, the moving part is locked in the opening position.

[0043] However, when the moving part is in the closed position, if the operating part is placed in the actuating position, the moving part may be "mis-opened", that is, moved from the closed position to the opening position, which is an undesirable result. For example, when the moving part corresponds to the on and off of the circuit in the closed position and the opening position, respectively, the mis-opening will have a great impact. Therefore, further, the locking mechanism according to the present disclosure also includes a function of preventing the operating part from being placed in the actuating position when the moving part is in the closed position.

[0044] Specifically, for example, it can be achieved by a latch 3, which can cooperate with the operating member 2, so as to prevent the operating member 2 from moving in the first pivot direction when the moving member 1 is in the closing position, thereby locking the operating member 2.

[0045] For example, Figure 5 As shown, the latch member 3 includes a latch portion 31, and the latch portion 31 is used to cooperate with the locking section 211 provided on the cam portion 21, as shown in FIG. Figure 4c As shown, to hinder the cam segment from pivoting along the first pivot direction. In particular, in combination Figure 1a , Figure 1b as well as Figure 3 , the latch 3 and the operating member 2 are arranged so that their pivot axes are perpendicular to each other, and the latch portion 31 extends toward the operating member 2 along the direction of the pivot axis of the latch 3, thereby enabling the latch portion 31 and the cam portion 21 to be aligned and separated along the first direction D1 (the extending direction of the pivot axis of the operating member 3) through the pivoting of the latch 3. When the latch portion 31 and the cam portion 21 are aligned in the first direction D1, the latch portion 31 can cooperate with the locking section 211 provided on the cam portion 21; when the latch portion 31 and the cam portion 21 are separated in the first direction D1, the latch portion 31 does not have any influence on the cam portion 21.

[0046] Furthermore, in order to align the latch portion 31 with the cam portion 21 in the first direction D1 at the appropriate time (the moving part is in the closing position) and separate them at the appropriate time (the moving part is in the opening position), it is necessary to associate the movement states of the latch portion 3 and the moving part 1.

[0047] Specifically, Figure 1a , Figure 2a As shown, when the moving member 1 is in the off position, the latch member 3 is in the unlocking position. In the unlocking position, the latch portion 31 of the latch member 3 is kept spaced apart from the cam portion 21 in the first direction, as shown in FIG. Figure 3 As shown, to ensure that the movement of the operating member is not blocked.

[0048] Specifically, Figure 4a As shown in FIG. 1 , when the moving member 1 is in the closing position, the latch member 3 is in the locking position. In the locking position, the latch portion 31 of the latch member 3 is aligned with the cam portion 21 in the first direction D1, so that the flashing portion 31 can cooperate with the cam portion 21. More specifically, as shown in FIG. Figure 4c As shown, the latch portion 31 can be cooperated with the locking section 211 provided on the cam portion 21 to hinder the operating member 2 from pivoting along the first pivot direction.

[0049] In addition, for example, Figure 1a , Figure 2a as well as Figure 4a As shown, the moving member 1 can be connected to the latch member 3 and drive the latch member 3 to move, so as to realize the above-mentioned movement association between the latch member 3 and the moving member 1. For example, the latch member 3 is also pivotally mounted to the housing 6, and in particular, the pivot axes of the latch member 3 and the moving member 1 are parallel to each other, and the latch member 3 and the moving member 1 are connected by the connecting member 5, so that the moving member 1 can drive the latch member 3 to pivot. For example, Figure 5 As shown, the latch 3 may include a matching portion 32 for matching with the coupling 5, for example, the matching portion 32 may be a notch, and may match with a protrusion on the coupling to pull the latch 3 to pivot. In addition, the matching portion 32 may be a protrusion, and the notch matching with the protrusion is provided on the coupling 5.

[0050] Furthermore, in order to ensure that the operating member 2 is not in the actuating position when the latch portion 31 cooperates with the locking section 211, the cam portion 21 is further configured so that when the operating member 2 is in the position where the locking section 211 is blocked by the latch portion 31, the transition section 212 abuts against the interlocking assembly 4, such as Figure 4c shown.

[0051] Furthermore, an idle stroke can be provided before the operating member 2 is locked to prevent the latch member 3 from interfering with the cam portion 21 when the moving member 1 switches between the closing position and the opening position normally, thereby ensuring the mechanical life of the product. Figure 4b and Figure 6 As shown, the idle travel section 214 is adjacent to the locking section 211. For example, the locking section 211 can be arranged between the idle travel section 214 and the transition section 212. The distance between a point on the idle travel section 214 and the pivot axis of the operating member 2 can be less than or equal to the distance between a point on the locking section 211 and the pivot axis of the operating member 2, so that when the latch member 3 is in the locked position, the operating member 2 is pivoted in the first pivot direction (in the first direction). Figure 4b and Figure 4c The pivoting (in the clockwise direction) drives the idle travel section 214 to pass through the latch portion 31 until the locking section 211 is blocked by the latch portion 31.

[0052] The present disclosure also provides an electrical device, such as a contactor, a circuit breaker or other electrical device capable of switching a circuit on and off. The electrical device includes the above-mentioned locking mechanism according to the present disclosure, and when the moving part 1 is in the open position, the electrical device is electrically isolated; when the moving part 1 is in the closed position, the electrical device is electrically conductive.

[0053] It should be understood that the above description is intended to illustrate rather than limit. For example, the above embodiments (and / or aspects thereof) can be used in combination with each other. In addition, without departing from the scope of the present disclosure, many modifications can be made to adapt specific situations or materials to the teachings of the present disclosure. The functions or performances of the various elements or modules described herein are only for illustration and are by no means restrictive, but are merely exemplary embodiments. After reading the above description, many other embodiments and modifications within the spirit and scope of the claims will be apparent to those skilled in the art. Therefore, the scope of the present disclosure should be determined with reference to the full scope of the equivalents given by the attached claims and these claims.

[0054] In the following claims, the terms “including” and “in which” are used as the plain-English equivalents of the respective terms “comprising” and “wherein.” Moreover, in the following claims, the terms “first,” “second,” and “third,” etc. are used merely as labels, and are not intended to impose numerical requirements on their objects.

Claims

1. A locking mechanism, characterized in that: include case, The moving member is configured to move relative to the housing between an open position and a closed position, The operating member is configured to pivot relative to the housing, and the operating member pivots along a first pivot direction to an actuating position, and when the operating member is at the actuating position, the moving member is locked in the opening position. A latch is connected to the moving part, when the moving part is in the opening position, the latch is in the unlocking position, when the moving part is in the closing position, the latch is in the locking position, wherein the latch includes a latch portion, and the operating part includes a locking section configured to cooperate with the latch, When the latch is located at the unlocking position, the latch portion does not block the pivoting of the operating member. When the latch is located at the locking position, the latch portion is located on the pivoting movement path of the locking section along the first pivoting direction, thereby blocking the operating member from moving to the actuating position.

2. The locking mechanism according to claim 1, characterized in that: The operating member further comprises an actuating section and a transition section between the actuating section and the locking section. The locking mechanism also includes an interlocking assembly, which is configured to abut against the transition section or the actuating section. When the operating member pivots along a first pivot direction, the interlocking assembly changes from abutting against the transition section to abutting against the actuating section. The interlocking assembly is actuated so that the moving member is locked in the open position by the interlocking assembly.

3. The locking mechanism according to claim 2, characterized in that: The operating member comprises a cam portion and an operating portion which pivot synchronously, the operating portion being configured to be operated by a force outside a housing to pivot the operating member, the locking section, the transition section and the actuating section being sections on a circumferential outer edge of the cam portion.

4. The locking mechanism according to claim 3, characterized in that: The distance between a point on the transition section and the pivot axis of the operating member is less than or equal to the distance between a point on the actuating section and the pivot axis of the operating member.

5. The locking mechanism according to claim 3, characterized in that: The latch member is pivotally connected to the housing to pivot between a locking position and an unlocking position, a pivot axis of the latch member is perpendicular to a pivot axis of the operating member, and the latch portion extends toward the operating member along the pivot axis direction of the latch member.

6. The locking mechanism according to claim 5, characterized in that: When the latch member is in the unlocking position, the latch portion and the cam portion have a gap along the pivot axis direction of the operating member, so that the latch portion does not block the pivoting of the operating member. When the latch member is in the locking position, the latch portion and the cam portion are aligned along the pivot axis direction of the operating member.

7. The locking mechanism according to claim 6, characterized in that: The cam portion is also provided with an idle motion section, and the distance between a point on the idle motion section and the pivot axis of the operating member is less than or equal to the distance between a point on the locking section and the pivot axis of the operating member. When the latch member is in the locking position, the operating member pivots along the first pivot direction so that the idle motion section passes through the latch member until the locking section is blocked by the latch member.

8. The locking mechanism according to claim 7, characterized in that: When the operating member is located at a position where the locking section is blocked by the latch portion, the transition section abuts against the interlocking assembly.

9. The locking mechanism according to claim 1, characterized in that: It also includes a connecting member, and the moving member drives the latch member to pivot through the connecting member.

10. An electrical device, characterized in that: comprising a locking mechanism according to any one of claims 1 to 9, When the moving part is in the open position, the electrical device is electrically isolated. When the moving part is in the closing position, the electrical device is electrically conductive.

11. The electrical device according to claim 10, characterized in that The electrical device is a circuit breaker.

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