Circuit breaker positioning locking structure and circuit breaker having the same

Abstract

The existing circuit breaker locking structure is single and cannot meet the needs of various internal space structures of circuit breakers. In order to solve the above problems, the present invention adopts the following technical solutions: a circuit breaker positioning locking structure, including a shell, a handle, and a positioning member rotatably connected to the shell, a positioning tongue is provided at one end of the positioning member, and an elastic reset member capable of pushing the positioning tongue out of the shell is connected at the other end; the positioning member can move forward to the hanging platform when subjected to a forward external force; it can move backward and move out of the hanging platform when subjected to a backward external force; the positioning member is realized by an elliptical pin hole to achieve forward and backward displacement, and is unlocked by pulling the handle outward. When the positioning member is in the front position, the front lower part of the positioning member is mounted on the hanging platform, and the positioning tongue is locked; when the positioning member is in the rear position, the positioning member is outside the hanging platform, at which time the positioning member can be rotated downward, and the positioning tongue can be retracted downward. Through the setting of the hanging platform, this solution only requires less space to achieve the locking and unlocking of the circuit breaker.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a circuit breaker positioning and locking structure and a circuit breaker having the same. Background Art

[0002] The existing circuit breaker locking structure is single and cannot meet the diverse internal design structures of circuit breakers. For example, the Chinese invention patent with publication number CN107833799A, entitled "A Fixing and Unlocking Mechanism for Plug-in Circuit Breakers", discloses a two-section long strip circuit breaker lock tongue mechanism. Such a lock tongue mechanism structure is in the shape of a long strip. Due to space limitations, the shell needs to be additionally protruded outward for the long strip mechanism. Such a setting method wastes the raw materials of the shell and cannot adapt well to the traditional rectangular circuit breaker shape. Summary of the invention

[0003] In order to solve the above problems, an object of the present invention is to provide a circuit breaker positioning locking structure and a circuit breaker having the same.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] The circuit breaker positioning locking structure comprises a shell, a handle extending out of the shell, and a positioning member rotatably connected to the shell, wherein a positioning tongue is arranged at one end of the positioning member, and an elastic reset member capable of pushing the positioning tongue out of the shell is connected to the other end; the positioning member can move forward to a hanging platform when subjected to a forward external force; the positioning member can move backward and move out of the hanging platform when subjected to a backward external force; the positioning member is rotatably connected to the shell through a positioning pin, the connecting hole between the positioning member and the positioning pin is elliptical, the positioning member can be displaced forward and backward relative to the positioning pin, the front end of the handle is provided with a first upward protrusion, and the rear end of the positioning member is provided with a second downward protrusion, when the handle is pulled backward, the first protrusion (61) abuts against the second protrusion, and the handle can drive the positioning member to move backward through the first protrusion until the positioning pin abuts against the front side of the elliptical hole.

[0006] A hanging platform is provided at the front lower part of the positioning member in the technical solution, and the positioning member can move forward and backward. When the positioning member is in the front position, the front lower part of the positioning member is mounted on the hanging platform, and the positioning tongue cannot retract downward; when the positioning member is in the rear position, the positioning member is outside the hanging platform, at which time the positioning member can rotate downward, and the positioning tongue can retract downward. When the circuit breaker is installed, the entire outer shell is inserted into the installation box, and the positioning tongue is subjected to a backward and downward force. At this time, the positioning member moves backward, moves out of the hanging platform and retracts downward. When it is pulled out again, the rear side of the positioning tongue is subjected to a forward force, and the positioning member moves forward and is placed on the hanging platform. The positioning tongue is locked and does not retract downward, and the circuit breaker is locked in the installation box. Through the setting of the hanging platform, this solution only requires less space to achieve the locking of the circuit breaker.

[0007] In the structure of the present technical solution, an elliptical pin hole is used to realize the forward and backward movement of the positioning member. The locking is realized by pushing the positioning member forward by force when inserting and the unlocking is realized by pulling the positioning member backward by the handle.

[0008] Preferably, the front side of the handle is connected to a limit block, and when the handle is closed forward, the upper part of the limit block abuts against the lower part of the positioning member; when the handle is pulled back, the limit block and the positioning member are no longer abutted. This solution also provides a second locking method, namely, closing lock. When the handle is closed, the front limit block is pushed to abut against the lower part of the positioning member, so that the positioning member cannot retract downward to achieve locking.

[0009] Preferably, a limiting protrusion is provided below the positioning member and protrudes downward, and when the handle is closed forward, the limiting block abuts against the limiting protrusion. Since the limiting block is linked with the handle, if the size is large, it will occupy a large space. Therefore, a limiting protrusion is provided on the lower side of the positioning member, and the range of motion of the protrusion is limited, and the space occupied is small. In this way, when the limiting block is set very small, it can still abut against the positioning member, and the space utilization rate is high.

[0010] Preferably, the limiting protrusion is arranged below the positioning member, the rear end of the limiting block protrudes to the same side of the limiting protrusion of the positioning member, and when the handle is closed forward, the rear end of the limiting block abuts against the limiting protrusion. The limiting protrusion and the limiting block protrude laterally, further saving space.

[0011] Preferably, the limit block is an L-shaped connecting block, and the upper end of the L-shaped rear arm is rotatably connected to the handle.

[0012] Preferably, the abutting surfaces of the first protrusion and the second protrusion are inclined surfaces, and the end surfaces of the protrusions are arc surfaces. When the end surfaces of the two protrusions are arc surfaces, when the two protrusions rub against each other, the first protrusion on the handle can drive the positioning member to move backward and downward along the arc surface, and the circuit breaker can be directly pulled out.

[0013] Preferably, the front side of the positioning tongue is provided with a guiding inclined surface, and the rear side is a right-angled surface. When the front side of the positioning tongue is a guiding inclined surface, the force applied when inserting the circuit breaker is decomposed into two components, namely, backward and downward forces, making the insertion process smoother; when the rear side is a right-angled surface, the rear side of the circuit breaker forms a forward pushing force when pulling out, making the circuit breaker easy to lock.

[0014] A circuit breaker comprises any one of the above-mentioned circuit breaker positioning and locking structures.

[0015] The circuit breaker positioning locking structure described in this solution includes two locking methods: hanging table locking and handle limit locking. Both locking methods can be unlocked by pulling out the handle. This design method is compact and can adapt to the limited space of the square box of the circuit breaker. In practical applications, these two locking methods can be set on the circuit breaker separately or simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a circuit breaker structure in one embodiment of the present invention;

[0017] Figure 2 is a cross-sectional view of a circuit breaker in one embodiment of the present invention;

[0018] Figure 3 A cross-sectional view of a circuit breaker locking structure in an embodiment of the present invention in an unlocked state when a force is applied backward;

[0019] Figure 4 It is a schematic diagram of a circuit breaker locking structure positioning member in an embodiment of the present invention in an unlocked state when a backward force is applied to the positioning member;

[0020] Figure 5 A cross-sectional view of a circuit breaker locking structure in an embodiment of the present invention in an unlocked state when a downward force is applied;

[0021] Figure 6 It is a schematic diagram of a circuit breaker locking structure positioning member in an embodiment of the present invention in an unlocked state when a force is applied downwards;

[0022] Figure 7 A cross-sectional view of a circuit breaker locking structure in an embodiment of the present invention in a locked state when the locking structure is subjected to a forward force;

[0023] Figure 8 It is a schematic diagram of a locking state when a positioning member of a locking structure of a circuit breaker is subjected to a forward force in one embodiment of the present invention;

[0024] Fig. 9 A cross-sectional view of a circuit breaker locking structure in a closed locking state according to an embodiment of the present invention;

[0025] Fig.10 A cross-sectional view of a circuit breaker locking structure in an unlocked state according to an embodiment of the present invention;

[0026] Fig.11 The figure is a schematic diagram of a circuit breaker locking structure positioning member and a handle unlocked state in one embodiment of the present invention. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection 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 invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] Example 1

[0033] like Figure 1-3 As shown, a circuit breaker positioning locking structure includes a housing 1, and a positioning member 2 rotatably connected in the housing, the positioning member 2 is rotatably connected in the housing 1 via a positioning pin 5, the connecting hole 22 between the positioning member 2 and the positioning pin 5 is elliptical, and the positioning member 2 can be displaced forward and backward relative to the positioning pin 5. When the positioning member 2 is subjected to a forward external force, it can move forward to the hanging platform 4; when the positioning member 2 is subjected to a backward external force, it can move backward and move out of the hanging platform 4. A positioning tongue is provided at one end of the positioning member 2, and a spring is connected to the other end to push the positioning tongue 21 out of the housing;

[0034] like Figure 2-11 As shown, the circuit breaker positioning locking structure in this embodiment also includes a handle 6 extending out of the housing, and the front side of the handle 6 is connected to a limiting block 7. When the handle 6 is closed forward, the upper part of the limiting block 7 abuts against the lower part of the positioning member 2; the limiting block 7 is an L-shaped connecting block, and the upper end of the rear arm of the L-shape is rotatably connected to the handle 6. When the handle 6 is pulled back, the limiting block 7 is released from abutting against the positioning member 2. A limiting protrusion 23 is protruding downwardly below the positioning member 2. When the handle 6 is closed forward, the limiting block 7 abuts against the limiting protrusion 23. The limiting protrusion 23 is arranged at the lower side of the positioning member 2, and the rear end of the limiting block 7 protrudes to the same side of the limiting protrusion 23 of the positioning member 2. When the handle 6 is closed forward, the rear end of the limiting block 7 abuts against the limiting protrusion 23.

[0035] The front end of the handle 6 is provided with a first upward protrusion 61, and the rear end of the positioning member 2 is provided with a second downward protrusion 24. When the handle 6 is pulled back, the first protrusion 61 and the second protrusion 24 abut against each other, and the handle 6 can drive the positioning member 2 to move backwards through the first protrusion 61 until the positioning pin 5 abuts against the front side of the elliptical hole. The abutting surfaces of the first protrusion 61 and the second protrusion 24 are inclined surfaces, and the end surfaces of the protrusions are arc surfaces. The front side of the positioning tongue 21 is provided with a guiding inclined surface, and the rear side is a right-angle surface.

[0036] The circuit breaker positioning locking structure of this embodiment has two locking modes. In the first mode, a hanging platform is provided at the front lower part of the positioning member, and the positioning member can move forward and backward. When the positioning member is in the front position, the front lower part of the positioning member is mounted on the hanging platform, and the positioning tongue cannot retract downward; when the positioning member is in the rear position, the positioning member is outside the hanging platform, at which time the positioning member can rotate downward, and the positioning tongue can retract downward. When the circuit breaker is installed, the entire outer shell is inserted into the installation box, and the positioning tongue is subjected to a backward and downward force. At this time, the positioning member moves backward, moves out of the hanging platform and retracts downward. When it is pulled out again, the rear side of the positioning tongue is subjected to a forward force, the positioning member moves forward, and is placed on the hanging platform. The positioning tongue is locked and does not retract downward, and the circuit breaker is locked in the installation box. Through the setting of the hanging platform, this solution only requires less space to achieve the locking of the circuit breaker. The elliptical connecting hole ensures that the positioning member can rotate and move forward and backward.

[0037] This solution is also provided with a second locking method, namely, closing lock. When the handle is closed, the front limit block is pushed to abut against the lower part of the positioning member, so that the positioning member cannot retract downward to achieve locking. Because the limit block is linked to the handle, if the volume is large, it will occupy a relatively large space. Therefore, a limit protrusion is set on the lower side of the positioning member, and the movable range of the protrusion is limited, and the space occupied is small. In this way, the limit block can still be abutted against the positioning member when it is set very small, and the space utilization rate is high. The limit protrusion and the limit block protrude laterally, which further saves space. The limit block is an L-shaped connecting block, and the upper end of the L-shaped rear arm is rotatably connected to the handle. The L-shaped structure is compact and occupies little space.

[0038] When unlocking, the protrusion of the handle can drive the positioning piece to move backward. Therefore, when the handle is pulled backward, the positioning piece can be pulled down from the hanging platform to release the lock. At the same time, when the handle is pulled backward, the limit block and the limit protrusion are also released from the contact, releasing the lock. The end faces of the two protrusions are arc surfaces. When the two rub against each other, the first protrusion on the handle can drive the positioning piece to move backward and downward along the arc surface, and the circuit breaker can be directly pulled out.

[0039] The front side of the positioning tongue is a guiding slope, so when inserting the circuit breaker, the force is decomposed into two components, backward and downward, making the insertion process smoother; the rear side is a right-angle surface, and when pulling out, the rear side of the circuit breaker forms a forward pushing force, making the circuit breaker easy to lock.

[0040] The circuit breaker positioning locking structure described in this solution includes two locking methods: hanging table locking and handle limit locking. Both locking methods can be unlocked by pulling out the handle. This design method is compact and can adapt to the limited space of the square box of the circuit breaker. In practical applications, these two locking methods can be set on the circuit breaker separately or simultaneously.

[0041] Example 2

[0042] A circuit breaker comprises any one of the above-mentioned circuit breaker positioning and locking structures.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0044] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. A circuit breaker positioning locking structure, comprising a housing (1), a handle (6) extending out of the housing, and a positioning member (2) rotatably connected to the housing, wherein one end of the positioning member (2) is provided with a positioning tongue, and the other end is connected to an elastic reset member (3) capable of pushing the positioning tongue (21) out of the housing; characterized in that: When the positioning member (2) is subjected to a forward external force, it can move forward to the hanging platform (4); when the positioning member (2) is subjected to a backward external force, it can move backward and move out of the hanging platform (4); the positioning member (2) is rotatably connected to the shell (1) via a positioning pin (5); the connecting hole (22) between the positioning member (2) and the positioning pin (5) is elliptical; the positioning member (2) can be displaced forward and backward relative to the positioning pin (5); the front end of the handle (6) is provided with an upward first protrusion (61); the rear end of the positioning member (2) is provided with a downward second protrusion (24); when the handle (6) is pulled backward, the first protrusion (61) and the second protrusion (24) abut against each other; the handle (6) can drive the positioning member (2) to move backward through the first protrusion (61) until the positioning pin (5) abuts against the front side of the elliptical hole; The handle (6) further comprises a limit block (7) connected to the front side thereof. When the handle (6) is closed forward, the upper portion of the limit block (7) abuts against the lower portion of the positioning member (2); when the handle (6) is pulled backward, the limit block (7) and the positioning member (2) are no longer abutted against each other.

2. The circuit breaker positioning locking structure according to claim 1, characterized in that: A limiting protrusion (23) is provided below the positioning member (2) and protrudes downwards. When the handle (6) is closed forward, the limiting block (7) abuts against the limiting protrusion (23).

3. The circuit breaker positioning locking structure according to claim 2, characterized in that: The limiting protrusion (23) is arranged at the lower side of the positioning member (2), and the rear end of the limiting block (7) protrudes to the same side as the limiting protrusion (23) of the positioning member (2). When the handle (6) is closed forward, the rear end of the limiting block (7) abuts against the limiting protrusion (23).

4. The circuit breaker positioning locking structure according to claim 3, characterized in that: The limit block (7) is an L-shaped connecting block, and the upper end of the rear arm of the L-shape is rotatably connected to the handle (6).

5. The circuit breaker positioning locking structure according to claim 1, characterized in that: The abutting surfaces of the first protrusion (61) and the second protrusion (24) are inclined surfaces, and the end surfaces of the protrusions are arc surfaces.

6. The circuit breaker positioning and locking structure according to claim 1, characterized in that: The front side of the positioning tongue (21) is provided with a guiding inclined surface, and the rear side is a right-angle surface.

7. A circuit breaker, characterized in that: The circuit breaker comprises any one of the circuit breaker positioning and locking structures of claims 1-6.

Images