Quick closing mechanism and circuit breaker

Abstract

The invention provides a quick closing mechanism and a circuit breaker, and relates to the technical field of low-voltage electric appliances. The quick closing mechanism comprises a shell, a handle rotationally arranged in the shell, a contact seat and a quick closing piece, the quick closing piece is in linkage with the handle and the contact seat, the handle is used for driving the contact seat to rotate in the closing direction, and the quick closing piece is used for enabling the contact seat to rotate in an accelerated mode in the closing process so as to achieve quick closing. According to the quick closing mechanism, the quick closing piece acts on the contact seat in the rotating closing process of the handle, so that the contact seat rotates in an accelerated manner, and quick closing is realized. The arrangement of the quick closing piece enables the closing speed of the moving contact and the static contact not to be affected by manual operation, closing is more reliable, safety is higher, abrasion of the contacts can be reduced, the service life is prolonged, and therefore product performance is improved.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a quick closing mechanism and a circuit breaker. Background Art

[0002] A circuit breaker is a switch device that can close, carry and interrupt the current under normal circuit conditions and close, carry and interrupt the current under abnormal circuit conditions within a specified time. The opening and closing operations of a circuit breaker are usually achieved through the contact and separation between the moving and static contacts. The handle, operating mechanism and moving contact of the circuit breaker are linked in sequence. The operator controls the handle to drive the moving contact to contact the static contact to complete the closing operation.

[0003] Therefore, the closing speed of the moving and static contacts of the existing circuit breaker is affected by manual operation. The product may be slow or not closed properly during the closing process. Once the distance between the contacts is too close, resulting in breakdown discharge, and the contacts cannot be closed in time, the contact loss will increase at the least, and safety accidents may be caused at the worst. Summary of the invention

[0004] The purpose of the present application is to provide a quick closing mechanism and a circuit breaker to address the deficiencies in the above-mentioned prior art, which can quickly close the moving contact and the static contact without being affected by human operation, and have higher reliability, safety and longer service life.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0006] One aspect of an embodiment of the present application provides a quick closing mechanism, including: a shell, a handle rotatably arranged in the shell, a contact seat and a quick closing member, the quick closing member being linked with the handle and the contact seat respectively, the handle being used to drive the contact seat to rotate along the closing direction, and the quick closing member being used to accelerate the rotation of the contact seat during the closing process to achieve quick closing.

[0007] Optionally, the first linkage end of the quick-closing member is located on the closing rotation path of the contact seat, and the second linkage end of the quick-closing member is located on the closing rotation path of the handle.

[0008] Optionally, a first limiting structure is provided on the first linkage end, and a second limiting structure is provided on the contact seat, the first limiting structure is located on the closing rotation path of the second limiting structure, and the first limiting structure can abut against the second limiting structure to limit the movement of the contact seat; a first unlocking structure is provided on the second linkage end, and a second unlocking structure is provided on the handle, the first unlocking structure is located on the closing rotation path of the second unlocking structure, and the second unlocking structure can drive the first unlocking structure to move so that the first limiting structure and the second limiting structure are released from the abutment relationship.

[0009] Optionally, the first limiting structure is a limiting groove, and the second limiting structure is a first limiting boss that can cooperate with the limiting groove. The contact seat is driven by the handle to rotate along the closing direction, and the first limiting boss is inserted into the limiting groove so that the contact seat is restricted from moving by the quick closing part.

[0010] Optionally, the first unlocking structure is an unlocking arm, and the second unlocking structure is an unlocking boss that can abut against the unlocking arm. The handle rotates along the closing direction, and the unlocking boss abuts against the unlocking arm to drive the unlocking arm to rotate.

[0011] Optionally, the quick-closing part includes a first linkage arm and a second linkage arm connected in a V-shape, the first linkage arm is used to link with the contact seat, and the second linkage arm is used to link with the handle, and the rotation center of the quick-closing part is located at the connection between the first linkage arm and the second linkage arm.

[0012] Optionally, the quick-closing member includes a first linkage arm and a second linkage arm, the end of the first linkage arm is bent to form a first limiting structure, and the end of the second linkage arm is bent to form a first unlocking structure.

[0013] Optionally, the surfaces of the first limiting boss and the limiting groove that abut against each other are both arc surfaces.

[0014] Optionally, a reset piece is provided on the quick-close part. When the handle drives the quick-close part to rotate, the reset piece deforms to store energy. A second limiting boss is provided in the shell. The second limiting boss is located on the reset path of the quick-close part. The second limiting boss is used to abut against the quick-close part to limit the quick-close part.

[0015] Another aspect of the embodiments of the present application provides a circuit breaker, comprising a quick closing mechanism as described above.

[0016] The beneficial effects of this application include:

[0017] The present application provides a quick closing mechanism, including: a housing, a handle rotatably arranged in the housing, a contact seat and a quick closing member, wherein the quick closing member is linked to the handle and the contact seat respectively, the handle is used to drive the contact seat to rotate along the closing direction, and the quick closing member is used to accelerate the rotation of the contact seat during the closing process to achieve quick closing. The quick closing mechanism is provided with a quick closing member that acts on the contact seat during the closing process of the handle rotating, so that the contact seat accelerates the rotation and achieves quick closing. The provision of the quick closing member makes the closing speed of the moving contact and the static contact unaffected by human operation, making the closing more reliable and safer, and can also reduce the wear of the contacts and increase the service life, thereby improving product performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a quick closing mechanism provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of a partial structure of a quick closing mechanism provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the linkage of a handle, a contact seat and a quick closing member in a quick closing mechanism provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the structure of a contact seat in a quick closing mechanism provided in an embodiment of the present application;

[0023] Figure 5 A schematic diagram of the connection between a quick closing member and a reset member in a quick closing mechanism provided in an embodiment of the present application;

[0024] Figure 6 A schematic diagram of the cooperation between the quick-closing member and the housing in the quick-closing mechanism provided in an embodiment of the present application.

[0025] Icon: 100-quick closing mechanism; 110-housing; 111-second limiting boss; 120-handle; 121-unlocking boss; 130-contact seat; 131-first limiting boss; 140-quick closing member; 141-first linkage arm; 1411-limiting groove; 142-second linkage arm; 1421-unlocking arm; 150-moving contact; 160-static contact; 170-arc surface; 180-reset member. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In one aspect of the embodiment of the present application, referring to Figure 1 and Figure 2 , a quick closing mechanism 100 is provided, comprising: a shell 110, a handle 120 rotatably arranged in the shell 110, a contact base 130 and a quick closing member 140, the quick closing member 140 is respectively linked with the handle 120 and the contact base 130, the handle 120 is used to drive the contact base 130 to rotate along the closing direction, and the quick closing member 140 is used to accelerate the rotation of the contact base 130 during the closing process to achieve quick closing.

[0032] The handle 120 is linked with the contact seat 130. The contact seat 130 is used to set the moving contact 150. The rotation of the handle 120 can drive the contact seat 130 to rotate. The contact seat 130 drives the moving contact 150 to move closer to or away from the static contact 160, thereby realizing the closing and opening operations. The handle 120 can be completely set in the housing 110, or it can be partially extended outside the housing 110. During the rotation of the handle 120 in the closing direction, the fast closing member 140 acts on the contact seat 130, so that the contact seat 130 rotates faster, driving the moving contact 150 to accelerate in the direction of the static contact 160, and realizing fast closing.

[0033] It should be noted that, in this embodiment, there is no limitation on the implementation method of the quick-closing member 140 accelerating the rotation of the contact holder 130. For example, in the early stage of closing, the quick-closing member 140 acts on the contact holder 130 to store energy in the contact holder 130, and in the later stage of closing, the handle 120 acts on the quick-closing member 140 to release the action relationship between the quick-closing member 140 and the contact holder 130, so that the contact holder 130 releases energy and accelerates the rotation in the direction where the static contact 160 is located.

[0034] The above-mentioned quick closing mechanism 100 is provided with a quick closing member 140 which acts on the contact holder 130 during the process of the handle 120 rotating to close the switch, so that the contact holder 130 accelerates the rotation during the closing process to achieve quick closing. The provision of the quick closing member 140 makes the closing speed of the moving contact 150 and the static contact 160 unaffected by human operation, making the closing more reliable and safer, and can also reduce the wear of the contacts and increase their service life, thereby improving product performance.

[0035] Optionally, in one achievable method of the embodiment of the present application, the first linkage end of the quick-closing member 140 is located on the closing rotation path of the contact base 130, and the second linkage end of the quick-closing member 140 is located on the closing rotation path of the handle 120, thereby achieving linkage with the contact base 130 and the handle 120 respectively.

[0036] Optionally, in an achievable manner of the embodiment of the present application, the quick-close member 140 includes a first linkage arm 141 and a second linkage arm 142 connected in a V-shape, the first linkage arm 141 is used to be linked with the contact holder 130, the second linkage arm 142 is used to be linked with the handle 120, and the rotation center of the quick-close member 140 is located at the connection between the first linkage arm 141 and the second linkage arm 142. The quick-close member 140 is arranged between the handle 120 and the contact holder 130, which can facilitate the linkage between the quick-close member 140 and the two, and can also save space in the housing 110.

[0037] Please refer to Figure 3Optionally, in an achievable manner of the embodiment of the present application, a first limiting structure is provided on the first linkage end, a second limiting structure is provided on the contact seat 130, the first limiting structure is located on the closing rotation path of the second limiting structure, and the first limiting structure can abut against the second limiting structure to limit the movement of the contact seat; a first unlocking structure is provided on the second linkage end, and a second unlocking structure is provided on the handle, the first unlocking structure is located on the closing rotation path of the second unlocking structure, and the second unlocking structure can drive the first unlocking structure to move so that the first limiting structure and the second limiting structure are released from the abutment relationship.

[0038] The handle 120 rotates along the closing direction to have a first position (initial position) and a second position. In the process of the handle 120 rotating from the first position to the second position, the contact seat 130 rotates along with the handle 120 so that the moving contact 150 gradually approaches the static contact 160. When the handle 120 moves to the second position, the second limiting structure on the contact seat 130 abuts against the first limiting structure on the quick-closing member 140, so that the quick-closing member 140 limits the movement of the contact seat 130, and the moving contact 150 will no longer move toward the static contact 160. At this time, there is a distance between the moving contact 150 and the static contact 160. The abutment method of the first limiting structure and the second limiting structure includes but is not limited to the second limiting structure being inserted into the first limiting structure, or the surface of the second limiting structure abuts against the surface of the first limiting structure. The second unlocking structure on the handle 120 contacts the first unlocking structure on the quick-closed member 140 at the second position or at a certain position after passing the second position. When the handle 120 passes the second position, the contact holder 130 is first restricted from moving by the quick-closed member 140. At this time, the continuous movement of the handle 120 will transmit force to the contact holder 130, thereby realizing energy storage of the contact holder 130. Afterwards, the second unlocking structure on the handle 120 drives the first unlocking structure on the quick-closed member 140 to move, the quick-closed member 140 rotates, the first limiting structure and the second limiting structure are released from the abutment relationship, the contact holder 130 releases energy, and drives the moving contact 150 to accelerate to move toward the static contact 160, thereby realizing rapid closing.

[0039] The above-mentioned quick closing mechanism 100 is provided with a quick closing member 140 to store energy in the contact holder 130 during the process of the handle 120 rotating to close the switch, and in the later stage of closing the switch, the energy released by the contact holder 130 is used to drive the moving contact 150 to contact the static contact 160 to achieve quick closing.

[0040] Please refer to Figures 3 to 5 Optionally, in one achievable method of the embodiment of the present application, the first limiting structure is a limiting groove 1411, and the second limiting structure is a first limiting boss 131 that can cooperate with the limiting groove 1411. The contact seat 130 is driven by the handle 120 to rotate along the closing direction, and the first limiting boss 131 is inserted into the limiting groove 1411 so that the contact seat 130 is restricted from moving by the quick-closing part 140.

[0041] The limiting groove 1411 on the quick-closing component 140 is located on the rotation path of the first limiting boss 131. After the first limiting boss 131 enters the limiting groove 1411 and abuts against the side wall of the limiting groove 1411, the quick-closing component 140 can limit the first limiting boss 131 so that it cannot continue to rotate in the original direction. When the handle 120 passes the second position, the position of the contact seat 130 remains unchanged, thereby realizing energy storage.

[0042] Optionally, in one achievable manner of the embodiment of the present application, the surfaces on the first limiting boss 131 and the limiting groove 1411 that abut against each other are both arc surfaces 170, so that the first limiting boss 131 can smoothly slide into the limiting groove 1411 of the quick-closing member 140 when the switch is closed.

[0043] When the handle 120 drives the contact holder 130 to close the switch, when the limiting groove 1411 of the quick-closing member 140 presses against the first limiting boss 131 of the contact holder 130, the moving contact 150 will no longer move toward the stationary contact 160. The handle 120 continues to move and transmits force to the contact holder 130, thereby realizing energy storage of the contact holder 130. After the second unlocking structure on the handle 120 drives the first unlocking structure on the quick-closing member 140 to operate, the quick-closing member 140 rotates, and the limiting groove 1411 is offset from the first limiting boss 131, thereby releasing the limitation on the contact holder 130, and the contact holder 130 releases energy and accelerates rotation.

[0044] For example, the first limiting boss 131 and the limiting groove 1411 are both triangular in shape, so as to facilitate the engagement and unlocking of the first limiting boss 131 and the limiting groove 1411. Furthermore, the corners of the first limiting boss 131 and the limiting groove 1411 that abut against each other are both rounded, so as to form arc surfaces 170 on the surfaces of the first limiting boss 131 and the limiting groove 1411, respectively.

[0045] Optionally, in one achievable method of an embodiment of the present application, the first unlocking structure is an unlocking arm 1421, the second unlocking structure is an unlocking boss 121 that can abut against the unlocking arm 1421, the handle 120 rotates along the closing direction, and the unlocking boss 121 abuts against the unlocking arm 1421 to drive the unlocking arm 1421 to rotate.

[0046] The unlocking arm 1421 is located on the closing rotation path of the unlocking boss 121. When the handle 120 is at the second position or after it passes the second position, the side wall of the unlocking boss 121 abuts against the side wall of the unlocking arm 1421, and the handle 120 continues to move in the closing direction. The unlocking boss 121 drives the unlocking arm 1421 to rotate, thereby rotating the quick-closing member 140. After the quick-closing member 140 rotates, it separates from the contact seat 130, the contact seat 130 releases energy, and the moving contact 150 accelerates to move toward the static contact 160 in the energy storage state, thereby achieving rapid closing.

[0047] Optionally, in one achievable manner of the embodiment of the present application, the quick-closing member 140 includes a first linkage arm 141 and a second linkage arm 142, the end of the first linkage arm 141 is bent to form a first limiting structure, and the end of the second linkage arm 142 is bent to form a first unlocking structure.

[0048] Please refer to Figure 2 and Figure 5 Optionally, in one possible implementation of the embodiment of the present application, a reset member 180 is provided on the fast-closing member 140, and when the handle 120 drives the fast-closing member 140 to rotate, the reset member 180 deforms to store energy. With this arrangement, after the handle 120 releases the force acting on the fast-closing member 140, the fast-closing member 140 can be automatically reset by the energy release of the reset member 180.

[0049] For example, the reset member 180 is a torsion spring, the center line of which coincides with the rotation axis of the quick-close member 140 , one end of which is connected to the housing 110 , and the other end of which is hooked on the quick-close member 140 .

[0050] Please refer to Figure 6 Optionally, in one achievable method of the embodiment of the present application, a second limiting boss 111 is provided in the shell 110, and the second limiting boss 111 is located on the reset path of the quick-connection part 140. The second limiting boss 111 is used to abut against the quick-connection part 140 to limit the quick-connection part 140 and prevent the quick-connection part 140 from exceeding the limit position during the reset process.

[0051] This embodiment further provides a circuit breaker, comprising any one of the above-mentioned quick closing mechanisms 100 .

[0052] The circuit breaker includes the same structure and beneficial effects as the quick closing mechanism 100 in the aforementioned embodiment. The structure and beneficial effects of the quick closing mechanism 100 have been described in detail in the aforementioned embodiment, and will not be repeated here.

[0053] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A quick closing mechanism, characterized in that: include: A housing (110), a handle (120) rotatably arranged in the housing (110), a contact seat (130) and a quick-closing member (140); the quick-closing member (140) is respectively linked with the handle (120) and the contact seat (130); the handle (120) is used to drive the contact seat (130) to rotate along a closing direction; and the quick-closing member (140) is used to accelerate the rotation of the contact seat (130) during the closing process, so as to achieve rapid closing.

2. The quick closing mechanism according to claim 1, characterized in that: The first linkage end of the quick-closing member (140) is located on the closing rotation path of the contact seat (130), and the second linkage end of the quick-closing member (140) is located on the closing rotation path of the handle (120).

3. The quick closing mechanism according to claim 2, characterized in that: A first limiting structure is provided on the first linkage end, and a second limiting structure is provided on the contact seat (130), the first limiting structure is located on a closing rotation path of the second limiting structure, and the first limiting structure can abut against the second limiting structure to limit the movement of the contact seat (130); A first unlocking structure is provided on the second linkage end, and a second unlocking structure is provided on the handle (120). The first unlocking structure is located on the closing rotation path of the second unlocking structure, and the second unlocking structure can drive the first unlocking structure to move so that the first limiting structure and the second limiting structure are released from the abutment relationship.

4. The quick closing mechanism according to claim 3, characterized in that: The first limiting structure is a limiting groove (1411), and the second limiting structure is a first limiting boss (131) capable of cooperating with the limiting groove (1411). The contact seat (130) is driven by the handle (120) to rotate along the closing direction, and the first limiting boss (131) is inserted into the limiting groove (1411) so that the contact seat (130) is restricted from moving by the quick-closing member (140).

5. The quick closing mechanism according to claim 3, characterized in that: The first unlocking structure is an unlocking arm (1421), and the second unlocking structure is an unlocking boss (121) capable of abutting against the unlocking arm (1421). When the handle (120) rotates in the closing direction, the unlocking boss (121) abuts against the unlocking arm (1421) to drive the unlocking arm (1421) to rotate.

6. The quick closing mechanism according to claim 1, characterized in that: The quick-close component (140) comprises a first linkage arm (141) and a second linkage arm (142) connected in a V-shape, the first linkage arm (141) being used to be linked with the contact seat (130), the second linkage arm (142) being used to be linked with the handle (120), and the rotation center of the quick-close component (140) is located at the connection between the first linkage arm (141) and the second linkage arm (142).

7. The quick closing mechanism according to claim 3, characterized in that: The quick-close component (140) comprises a first linkage arm (141) and a second linkage arm (142); the end of the first linkage arm (141) is bent to form the first limiting structure, and the end of the second linkage arm (142) is bent to form the first unlocking structure.

8. The quick closing mechanism according to claim 4, characterized in that: The surfaces on the first limiting boss (131) and the limiting groove (1411) that abut against each other are both arc surfaces (170).

9. The quick closing mechanism according to claim 1, characterized in that: The quick-close component (140) is provided with a reset component (180). When the handle (120) drives the quick-close component (140) to rotate, the reset component (180) deforms to store energy. A second limiting boss (111) is provided in the housing (110). The second limiting boss (111) is located on the reset path of the quick-close component (140). The second limiting boss (111) is used to abut against the quick-close component (140) to limit the quick-close component (140).

10. A circuit breaker, characterized in that: Comprising a quick closing mechanism as claimed in any one of claims 1 to 9.

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