Interlocking device for contactor and contactor assembly
The contactor lock mechanism simplifies installation and reduces costs by coupling with dynamic triggers to prevent one contactor from closing, enhancing stability and safety.
Patent Information
- Application Number
- CN202422320647.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-23
AI Technical Summary
The installation of traditional contactor chain devices is complicated and have high accuracy requirements, resulting in increased installation costs.
A chain device is designed to achieve rotating contact between the limiting part and the limiting part through coupling the limiting part through the coupling of the limiting part and the limiting part, limit the closing operation of the contactor, simplify the installation process and reduce the accuracy requirements.
Improves the stability of the contactor chain, reduces installation costs and accuracy requirements, and simplifies the installation process.
Smart Images
Figure CN223108776U_ABST
Abstract
Description
Technical Field
[0001] The exemplary embodiments of the present disclosure generally relate to the field of electrical equipment, and particularly to an interlocking device for a contactor and a contactor assembly. Background Art
[0002] The interlocking device of a contactor is an important electrical safety device. It mainly prevents the contactor from misoperation through mechanical or electrical means, ensures the operation of multiple contactors in a specific order, and improves the safety of the system. It is widely used in power systems, industrial production, building electrical and other scenarios. Summary of the Utility Model
[0003] In a first aspect of the present disclosure, there is provided an interlocking device for a contactor. The interlocking device includes: a housing disposed between a pair of contactors and including a pair of operation holes respectively formed in two side walls of the housing facing the pair of contactors; and a pair of limit members disposed in the housing and respectively coupled to the pair of contactors. Each limit member of the pair of limit members includes: a mounting portion rotatably coupled to the inner wall of the housing; a driving portion coupled to the moving contact mechanism of the pair of contactors to move with the moving contact mechanism during the movement of the moving contact mechanism from the open position to the closed position, and drive the limit member to rotate around the rotation axis of the mounting portion to the limit position; and a limiting portion coupled to the mounting portion and adapted to contact the limiting portion of another limit member of the pair of limit members during the limit member being in the limit position, so as to limit the closing operation of the contactor corresponding to the other limit member by restricting the rotation of the other limit member to the limit position.
[0004] In some embodiments, the driving portion includes: an extending portion coupled to the mounting portion and adapted to extend along a first radial direction perpendicular to the rotation axis; and a pushing portion disposed at an end of the extending portion away from the mounting portion and adapted to pass through the operation hole on the corresponding side of the housing and extend towards the contactor.
[0005] In some embodiments, the pushing portion abuts against a pushing plane on the side of the moving contact mechanism facing the static contact.
[0006] In some embodiments, the side of the pushing portion facing the pushing plane is a curved surface.
[0007] In some embodiments, the driving portion further includes: a reinforcing rib disposed on both circumferential sides of the pushing portion around the rotation axis and coupled to the extending portion.
[0008] In some embodiments, the limiting portion is arranged to protrude from the mounting portion along a second radial direction perpendicular to the rotation axis of the limit member.
[0009] In some embodiments, there is a non-zero angle between the first radial direction and the second radial direction.
[0010] In some embodiments, the interlocking device further includes: a pair of elastic members respectively corresponding to a pair of limiting members and disposed between the limiting members and the inner wall of the housing.
[0011] In some embodiments, the interlocking device further includes: a cover disposed on the user side of the cover facing the user and at least partially shielding a pair of limiting members.
[0012] By installing the interlocking device between a pair of contactors and coupling a pair of limiting members of the interlocking device to the moving contact mechanisms of the pair of contactors respectively. When the moving contact mechanism of one of the pair of contactors (for example, the first contactor) moves from the open position to the closed position during operation. The moving contact mechanism drives the corresponding limiting member (i.e., the first limiting member coupled to the first contactor) to rotate to the limiting position. The limiting portion of the first limiting member rotates onto the rotation path of the other limiting member (i.e., the second limiting member relative to the first limiting member among the pair of limiting members). Thus, the rotation of the second limiting member to the limiting position is restricted by the contact between the limiting portion of the first limiting member and the limiting portion of the second limiting member. Further, the moving contact mechanism of the second contactor coupled to the second limiting member cannot move from the open position to the closed position. That is, during the closing of the first contactor, the second contactor cannot perform the closing operation, thereby achieving interlocking between the contactors. In this way, the stability of the interlocking of the pair of contactors is improved, while the precision requirement for the installation of the contactor assembly is reduced, and the installation cost is decreased.
[0013] In a second aspect of the present disclosure, there is provided a contactor assembly. The contactor assembly includes: a pair of contactors; and an interlocking device provided according to the first aspect of the present disclosure and disposed between the pair of contactors.
[0014] It should be understood that the content described in this part is not intended to define the key features or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Combined with the drawings and with reference to the following detailed description, the above and other features, advantages and aspects of the embodiments of the present disclosure will become more obvious. In the drawings, the same or similar reference numerals denote the same or similar elements, where:
[0016] Figure 1 shows a schematic diagram of the overall structure of a contactor assembly according to some embodiments of the present disclosure;
[0017] Figure 2 shows a schematic diagram of the internal structure of an interlocking device according to some embodiments of the present disclosure;
[0018] Figure 3Shows a schematic diagram of the overall structure of a limiting member according to some embodiments of the present disclosure; and
[0019] Figure 4 Shows a schematic diagram of the cooperation relationship between the limiting member and the moving contact mechanism of the contactor according to some embodiments of the present disclosure. Detailed implementation manners
[0020] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.
[0021] It should be noted that the titles of any sections / subsections provided herein are not restrictive. Various embodiments are described throughout this document, and any type of embodiment can be included under any section / subsection. In addition, the embodiments described in any section / subsection can be combined with any other embodiments described in the same section / subsection and / or different sections / subsections in any manner.
[0022] In the description of the embodiments of the present disclosure, the term "including" and its like should be understood as an open inclusion, that is, "including but not limited to". The term "based on" should be understood as "at least partially based on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". There may also be other explicit and implicit definitions hereinafter. The terms "first", "second", etc. may refer to different or the same objects. There may also be other explicit and implicit definitions hereinafter.
[0023] As briefly mentioned above, the conventional interlocking device for contactors needs to assemble a pair of contactors and the interlocking device in a predetermined order during installation. Specifically, the user needs to first install the interlocking device on one side of the first contactor of a pair of contactors, and then install the second contactor of the pair of contactors on the other side of the interlocking device. Such an installation method is cumbersome, and in subsequent maintenance, it is not convenient to disassemble and replace a single contactor. In addition, the conventional interlocking device has a relatively high requirement for the fixing accuracy of the contactor, thereby additionally increasing the installation cost of the contactor and the components of the contactor.
[0024] In order to solve or at least partially solve the above-mentioned problems or other potential problems existing in the conventional technology, an embodiment of the present disclosure provides an interlocking device and a contactor assembly for a contactor. By installing the interlocking device between a pair of contactors, and making a pair of limiting members of the interlocking device coupled with the moving contact mechanisms of a pair of contactors respectively, when the moving contact mechanism of one of the pair of contactors (for example, the first contactor) is actuated and moves from the opening position to the closing position. The moving contact mechanism drives the corresponding limiting member (i.e., the first limiting member coupled with the first contactor) to rotate to the limiting position. The limiting portion of the first limiting member rotates to the rotation path of another limiting member (i.e., the second limiting member in a pair of limiting members relative to the first limiting member). Thus, the second limiting member is limited from rotating to the limiting position by the contact between the limiting portion of the first limiting member and the limiting portion of the second limiting member.
[0025] Furthermore, since the second stopper cannot rotate to the stopper position, the moving contact mechanism of the second contactor coupled to the second stopper cannot move from the opening position to the closing position. That is, during the closing of the first contactor, the second contactor cannot perform the closing operation, thereby realizing the interlocking between the contactors. In this way, the stability of the interlocking of a pair of contactors is improved, while the precision requirements for the installation of the contactor assembly are reduced, thereby reducing the installation cost.
[0026] Figure 1 FIG. 2 shows a schematic diagram of the overall structure of a contactor assembly according to some embodiments of the present disclosure. Figure 1 As shown, the contactor assembly generally includes a pair of contactors 1 and an interlocking device arranged between the pair of contactors 1. If the moving contact mechanism 11 of one of the pair of contactors 1 (for example, the first contactor 1) moves from the open position to the closed position, the interlocking device works and can restrict the moving contact mechanism 11 of the other contactor 1 (for example, the second contactor 1 in the pair of contactors 1 relative to the first contactor 1) from moving to the closed position, thereby interlocking the pair of contactors 1, thereby improving the safety of the work between the contactors 1.
[0027] In some embodiments, the contactor assembly may further include a back plate, which is arranged on the installation side of the contactor 1 away from the user side, and the contactor 1 may be fixed on the back plate by means of snaps, fasteners, etc. In some embodiments, the user may first fix a pair of contactors 1 on the back plate respectively along the arrangement direction S, and install a locking device in the gap between the pair of contactors 1.
[0028] Figure 2 FIG. 2 shows a schematic diagram of the internal structure of a locking device according to some embodiments of the present disclosure. Figure 1 and Figure 2As shown, the interlocking device includes a housing 2 and a pair of limit members 3 disposed within the housing 2. The two sides of the housing 2 facing the pair of contactors 1 are respectively coupled to the pair of contactors 1, thereby fixing the interlocking device to the pair of contactors 1. In some embodiments, the two sides of the housing 2 facing the pair of contactors 1 respectively extend outwardly towards the corresponding contactors 1, and mounting holes 23 are formed on the outer edges. The contactors 1 and the interlocking device are fixed by passing fasteners such as bolts through the mounting holes 23 and the contactors 1. In some embodiments, the mounting holes 23 can be waist-shaped holes, and the long axis direction of the waist-shaped holes is parallel to the arrangement direction S of the pair of contactors 1, so that the interlocking device can be installed between pairs of contactors 1 with various clearance specifications.
[0029] In some embodiments, one side of the housing 2 facing the user is open, so as to facilitate the user to check and adjust the working state of the limit members 3 disposed within the housing 2 during maintenance. The interlocking device further includes a cover 22 disposed on the side of the housing 2 facing the user, and the cover 22 is adapted to at least partially shield the limit members 3.
[0030] Figure 3 The overall structural schematic diagram of the limit member in some embodiments according to the present disclosure is shown. As Figure 3 shown, the limit member 3 includes a mounting portion 4 rotatably coupled to the inner wall of the housing 2, a driving portion 5 coupled to the mounting portion 4, and a limiting portion 6. The mounting portion 4 is adapted to be rotatably connected to the inner wall of the housing 2 about the rotation axis. In some embodiments, the rotation axis can be parallel to the arrangement direction S of the pair of contactors 1, and the rotation axes of the mounting portions 4 of the pair of limit members 3 are parallel to each other and separated by a predetermined distance. On the two side walls of the housing 2 facing the pair of contactors 1, operation holes 21 are respectively formed, and one end of the driving portion 5 away from the mounting portion 4 passes through the corresponding operation hole 21 and is coupled to the moving contact mechanism 11 of the corresponding contactor 1.
[0031] If during the movement of the moving contact mechanism 11 of the first contactor 1 in the pair of contactors 1 from the open position to the closed position, the moving contact mechanism 11 drives the driving portion 5 of the first limit member 3 coupled to the first contactor 1 to move, thereby causing the first limit member 3 to rotate about the rotation axis to the limiting position. In the limiting position, the limiting portion 6 of the first limit member 3 is within the rotation range of the limiting portion 6 of the other limit member 3 (i.e., the second limit member 3 relative to the first limit member 3 in the pair of limit members 3). If in this case, the second limit member 3 also has a tendency to rotate to the limiting position (for example, when the second contactor 1 coupled to the second limit member 3 has a tendency to close), at this time, the limiting portion 6 of the first limit member 3 contacts the limiting portion 6 of the second limit member 3 and restricts the second limit member 3 from rotating to the limiting position. Since the driving portion 5 of the second limit member 3 is coupled to the second contactor 1, the closing operation of the second contactor 1 is also restricted.
[0032] Figure 4 The figure shows a schematic diagram of the cooperation relationship between the limiting member and the moving contact mechanism of the contactor according to some embodiments of the present disclosure. As Figure 3 and Figure 4 shown, in some embodiments, the driving part 5 includes an extending part 51 and a pushing part 52 coupled to the extending part 51. The extending part 51 is coupled to the mounting part 4 and is adapted to extend along a first radial direction perpendicular to the rotation axis. The pushing part 52 is arranged at the end of the extending part 51 away from the mounting part 4 and is adapted to extend towards the corresponding contactor 1. In some embodiments, the pushing part 52 abuts against the pushing plane 12 of the moving contact mechanism 11 of the contactor 1 facing the static contact. When the moving contact mechanism 11 moves towards the static contact, the pushing inclined plane can push the pushing part 52 to move synchronously, so that the driving part 5 drives the corresponding limiting member 3 to rotate around the rotation axis. In addition, if the limiting member 3 is fixed (for example, the second limiting member 3 is blocked by the first limiting member 3), at this time, the pushing part 52 can limit the movement of the moving contact towards the closing position.
[0033] In some other embodiments, the pushing part 52 can also be coupled to the moving contact mechanism 11 of the contactor 1 in any other suitable manner, and the present disclosure does not limit this.
[0034] In some embodiments, one side of the pushing part 52 facing the pushing plane 12 is a curved surface. Thus, during the movement of the moving contact mechanism 11 from the opening position to the closing position, the curved surface of the pushing part 52 contacts the pushing plane 12, so that the friction between the pushing part 52 and the pushing plane 12 can be reduced, thereby facilitating the rotation of the limiting member 3 as the moving contact mechanism 11 moves. In some embodiments, the driving part 5 further includes a reinforcing rib 53, and the reinforcing rib 53 is arranged on both sides of the pushing part 52 in the circumferential direction around the rotation axis and is coupled to the extending part 51.
[0035] In some embodiments, the limiting part 6 protrudes from the mounting part 4 along a second radial direction perpendicular to the rotation axis, and there is a predetermined non-zero angle between the second radial direction and the first radial direction. In this way, during the period when the first limiting member 3 is in the limiting position, the limiting part 6 of the first limiting member 3 can more stably block the rotation trajectory of the limiting part 6 of the second limiting member 3.
[0036] In some embodiments, the interlocking device further includes a pair of elastic members 7, and the pair of elastic members 7 correspond to the pair of limiting members 3 respectively. One end of the elastic member 7 is coupled to the corresponding limiting member 3, and the other end is coupled to the housing 2. The elastic member 7 is adapted to provide an elastic force to the limiting member 3 so that the limiting member 3 can automatically rotate back to the initial position opposite to the limiting position when it is not affected by the moving contact mechanism 11 (for example, when the contactor 1 trips, the moving contact mechanism 11 moves away from the static contact, so that the pushing plane 12 of the moving contact mechanism 11 is separated from the pushing part 52).
[0037] The various implementations of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed implementations. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described implementations. The choice of terms used herein is intended to best explain the principles of the implementations, the practical application, or the improvement of the technology in the market, or to enable other ordinary skill in the art to understand the various implementation manners disclosed herein.
Claims
1. An interlocking device for a contactor (1), characterized in that, Comprising: A housing (2), disposed between a pair of contactors (1), and including a pair of operation holes (21), the pair of operation holes (21) being respectively formed on two side walls of the housing (2) facing the pair of contactors (1); And A pair of limit members (3), disposed within the housing (2) and respectively coupled to the pair of contactors (1), each limit member (3) of the pair of limit members (3) including: A mounting portion (4), rotatably coupled to the inner wall of the housing (2); A driving portion (5), coupled to the moving contact mechanism (11) of one of the pair of contactors (1) (1), to move along with the moving contact mechanism (11) during the movement of the moving contact mechanism (11) from the opening position to the closing position, and drive the limit member (3) to rotate about the rotation axis of the mounting portion (4) to the limit position; and A limiting portion (6), coupled to the mounting portion (4), adapted to contact the limiting portion (6) of the other limit member (3) of the pair of limit members (3) during the period when the limit member (3) is in the limit position, so as to limit the rotation of the other limit member (3) To the limit position to limit the closing operation of the contactor (1) corresponding to the other limit member (3).
2. The chain device according to claim 1, characterized in that, The driving portion (5) includes: an extension portion (51), coupled to the mounting portion (4) and adapted to extend along a first radial direction perpendicular to the rotation axis; and A pushing portion (52), disposed at the end of the extension portion (51) away from the mounting portion (4), adapted to pass through the operation hole (21) on the corresponding side of the housing (2) and extend towards the contactor (1).
3. The chain device according to claim 2, wherein The pushing portion (52) abuts against the pushing plane (12) on the side of the moving contact mechanism (11) facing the static contact.
4. The interlocking device according to claim 3, characterized in that, The side of the pushing portion (52) facing the pushing plane (12) is a curved surface.
5. The chain device according to claim 2, characterized in that, The driving portion (5) further includes: a reinforcing rib (53), the reinforcing rib (53) being disposed on both sides of the pushing portion (52) in the circumferential direction around the rotation axis and coupled to the extension portion (51).
6. The interlocking device according to any one of claims 2-5, characterized in that, The limiting portion (6) is arranged to protrude from the mounting portion (4) along a second radial direction perpendicular to the rotation axis of the limit member (3).
7. The interlocking device according to claim 6, characterized in that, There is a non-zero angle between the first radial direction of the extension portion (51) and the limiting portion (6) and the second radial direction.
8. The interlocking device according to any one of claims 1-5 and 7, characterized in that, Further comprising: A pair of elastic members (7), corresponding to the pair of limit members (3) respectively, and disposed between the limit members (3) and the inner wall of the housing (2).
9. The chain device according to any one of claims 1-5 and 7, characterized in that Further comprising: A cover body (22), disposed on the user side of the cover body (22) facing the user, and at least partially shielding the pair of limit members (3).
10. A contactor assembly, characterized in that, Comprising: A pair of contactors (1); And The interlocking device according to any one of claims 1-9, disposed between the pair of contactors (1).