Moving contact assembly, change-over switch and power distribution equipment
By setting a limiting member in the movable contact assembly to make it abut the elastic member, the problem of unbalanced stress on the movable contact is solved and the closing stability is improved.
Patent Information
- Application Number
- CN202420217071.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-01-29
AI Technical Summary
The moving contact may experience unbalanced stress under the action of the elastic element, causing the moving contact to tilt, which is not conducive to closing action.
By setting the limiting member, the movable contact always abuts the limiting member under the action of the elastic member, thereby maintaining a balanced and centered position, ensuring the closing of the movable contact and the static contact.
The balance and centering position of the moving contacts are achieved, making the closing action more stable and improving the closing stability of the switch.
Smart Images
Figure CN222637077U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a moving contact assembly, a conversion switch and a power distribution device. Background Art
[0002] The transfer switch is mainly used in working environments where low-voltage power distribution systems are powered by two power supplies. Its function is to automatically convert the main power supply of the transmission and distribution line to the backup power supply when problems or failures occur in the normal power supply, thereby achieving uninterrupted power supply to the entire circuit, thereby ensuring the continuity and stability of power consumption for key loads.
[0003] At present, the moving contacts on the market are generally divided into a snap-on structure and a clamping structure. Among them, the moving contact assembly of the clamping structure is usually provided with an elastic element, so that the elastic element drives the moving contact to clamp the static contact to realize the closing action. However, the moving contact may be subjected to unbalanced force under the action of the elastic element, thereby causing the moving contact to tilt, which is not conducive to the closing action. Utility Model Content
[0004] The purpose of the utility model is to provide a moving contact assembly, a switching switch and a power distribution equipment, which can keep the moving contact balanced under the limiting action of a limit member and keep the moving contact relatively centered relative to a mounting seat, thereby facilitating the closing of the moving contact and the static contact.
[0005] The embodiment of the utility model is achieved as follows:
[0006] In a first aspect, the utility model provides a moving contact assembly, including a mounting seat, a limiting member, an elastic member and a moving contact;
[0007] The mounting seat is connected to the limiting member;
[0008] The moving contact is movably arranged on the mounting seat;
[0009] The elastic member is arranged on the mounting seat, and is used to make the moving contact have a tendency to move toward the limiting member, so that the moving contact abuts against the limiting member.
[0010] In an optional embodiment, the mounting seat includes a first mounting member and a second mounting member connected to each other, and the limiting member is connected to the first mounting member;
[0011] The moving contact comprises a first moving contact piece and a second moving contact piece which are arranged at intervals, wherein the first moving contact piece and the second moving contact piece are respectively arranged on opposite sides of the limiting member, and the elastic member is used to make the first moving contact piece and the second moving contact piece have a tendency to move relative to each other.
[0012] In an optional embodiment, the first moving contact piece is located between the first mounting member and the limiting member, the second moving contact piece is located between the second mounting member and the limiting member, the elastic member includes a first elastic member and a second elastic member, one end of the first elastic member is connected to the first mounting member, and the other end is connected to the first moving contact piece, one end of the second elastic member is connected to the second mounting member, and the other end is connected to the second moving contact piece.
[0013] In an optional embodiment, the number of the first elastic member and the number of the second elastic member are both plural, the plurality of the first elastic members are symmetrically arranged about the first moving contact piece, and the plurality of the second elastic members are symmetrically arranged about the second moving contact piece.
[0014] In an optional embodiment, the limiting member is provided with a first clamping portion, and the second mounting member is provided with a second clamping portion, and the first clamping portion is clamped with the second clamping portion.
[0015] In an optional embodiment, the first mounting member is provided with a third clamping portion, the second mounting member is provided with a buckle, and the third clamping portion is engaged with the buckle.
[0016] In an optional embodiment, the first mounting member is provided with a positioning groove, and the second mounting member is provided with a protruding positioning portion, and the positioning portion is used to be embedded in the positioning groove.
[0017] In an optional embodiment, the limiting member and the first mounting member are integrally formed.
[0018] In a second aspect, the utility model provides a conversion switch, comprising a moving contact assembly as described in any one of the aforementioned embodiments.
[0019] In a third aspect, the utility model provides a power distribution device, including a conversion switch as described in the above embodiment.
[0020] The beneficial effects of the moving contact assembly, the conversion switch and the power distribution equipment provided by the embodiments of the utility model include: by setting a limit piece, the moving contact is always in contact with the limit piece under the action of the elastic piece, so that the moving contact maintains balance under the action of the elastic piece and the limiting action of the limit piece, and the moving contact remains relatively centered with respect to the mounting seat, which is beneficial to the closing of the moving contact and the static contact and improves the closing stability of the conversion switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, 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 utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic diagram of the structure of a moving contact assembly provided in an embodiment of the utility model;
[0023] Figure 2 An exploded view of a moving contact assembly provided in an embodiment of the utility model;
[0024] Figure 3 A schematic diagram of the structure of a first mounting member provided in an embodiment of the utility model;
[0025] Figure 4 This is a schematic diagram of the second mounting structure provided in an embodiment of the utility model.
[0026] Icon: 10-moving contact assembly; 100-mounting seat; 110-first mounting member; 111-third holding portion; 112-positioning groove; 120-second mounting member; 121-second holding portion; 122-buckle; 123-positioning portion; 200-limiting member; 210-first holding portion; 220-limiting portion; 300-elastic member; 310-first elastic member; 320-second elastic member; 400-moving contact; 410-first moving contact piece; 420-second moving contact piece; 500-screw. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0029] 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.
[0030] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. 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.
[0031] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0032] In the description of the present invention, it is also necessary to explain 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 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.
[0033] The transfer switch is mainly used in working environments where low-voltage power distribution systems are powered by two power supplies. Its function is to automatically convert the main power supply of the transmission and distribution line to the backup power supply when problems or failures occur in the normal power supply, thereby achieving uninterrupted power supply to the entire circuit, thereby ensuring the continuity and stability of power consumption for key loads.
[0034] At present, the moving contacts on the market are generally divided into a snap-on structure and a clamping structure. Among them, the moving contact assembly of the clamping structure is usually provided with an elastic element, so that the elastic element drives the moving contact to clamp the static contact to realize the closing action. However, the moving contact may be subjected to unbalanced force under the action of the elastic element, thereby causing the moving contact to tilt, which is not conducive to the closing action.
[0035] Based on the above problems, the utility model provides a transfer switch which can be applied to the technical field of low-voltage electrical appliances. The transfer switch comprises a housing, a driving mechanism, a static contact assembly and a moving contact assembly.
[0036] In this embodiment, both the static contact assembly and the moving contact assembly are installed in the shell, wherein the static contact assembly generally includes a common static contact and a spare static contact, and the moving contact assembly is driven by a driving mechanism to rotate relative to the shell so that the moving contact assembly contacts the common static contact or contacts the spare static contact to realize the switching of the common power supply and the spare power supply, thereby ensuring the uninterrupted power supply of the entire circuit, thereby ensuring the continuity and stability requirements of the power consumption of the critical load.
[0037] For further information, see Figures 1 to 4 The moving contact assembly 10 includes a mounting seat 100 , a limiting member 200 , an elastic member 300 and a moving contact 400 .
[0038] Among them, the mounting seat 100 is connected to the limiting member 200; the moving contact 400 can be movably arranged on the mounting seat 100, and the elastic member 300 is arranged on the mounting seat 100, which is used to make the moving contact 400 have a tendency to move toward the limiting member 200 so that the moving contact 400 abuts against the limiting member 200.
[0039] In this embodiment, the mounting seat 100 is used to be connected to the driving mechanism so as to rotate relative to the housing under the drive of the driving mechanism, thereby driving the moving contact 400 to rotate, thereby achieving the closing of the moving contact 400 and the static contact.
[0040] By providing an elastic member 300 and acting on the moving contact 400, the moving contact 400 has a tendency to move toward the limit member 200. On the one hand, the elastic force of the elastic member 300 can make the moving contact 400 always in contact with the static contact in the closed state, thereby ensuring the stability of the closing. On the other hand, by providing the limit member 200, the moving contact 400 is always in contact with the limit member 200 under the action of the elastic member 300, so that the moving contact 400 maintains balance under the action of the elastic member 300 and the limiting action of the limit member 200, so that the moving contact 400 remains relatively centered with respect to the mounting seat 100, which is beneficial to the closing of the moving contact 400 and the static contact, thereby improving the closing stability of the transfer switch.
[0041] Furthermore, the mounting seat 100 includes a first mounting member 110 and a second mounting member 120 connected to each other, and the limiting member 200 is connected to the first mounting member 110 .
[0042] The moving contact 400 includes a first moving contact piece 410 and a second moving contact piece 420 which are spaced apart, and the first moving contact piece 410 and the second moving contact piece 420 are respectively arranged on opposite sides of the limiting member 200; specifically, the first moving contact piece 410 is located between the first mounting member 110 and the limiting member 200, and the second moving contact piece 420 is located between the second mounting member 120 and the limiting member 200. In other words, the limiting member 200 is arranged between the first moving contact piece 410 and the second moving contact piece 420 to play a role of spacing and limiting.
[0043] It should be noted that the elastic member 300 is used to make the first moving contact piece 410 and the second moving contact piece 420 have a tendency to move relative to each other. In this case, the elastic member 300 can be in a stretched state and arranged between the first moving contact piece 410 and the second moving contact piece 420, so that the elastic restoring force generated by the elastic member 300 drives the first moving contact piece 410 and the second moving contact piece 420 to move relative to each other; of course, the elastic member 300 can also be in a compressed state and arranged on the side of the first moving contact piece 410 away from the second moving contact piece 420. Similarly, the elastic member 300 can also be in a compressed state and arranged on the side of the second moving contact piece 420 away from the first moving contact piece 410, so that the elastic restoring force generated by the elastic member 300 drives the first moving contact piece 410 and the second moving contact piece 420 to move relative to each other.
[0044] In the present embodiment, it should be noted that the distance between the first moving contact piece 410 and the second moving contact piece 420 is slightly smaller than the thickness of the static contact. Therefore, when the driving mechanism drives the first moving contact piece 410 and the second moving contact piece 420 to close the static contact, the first moving contact piece 410 and the second moving contact piece 420 are first moved away from each other under the action of the static contact to ensure that the static contact can extend between the first moving contact piece 410 and the second moving contact piece 420. In this process, the moving contact 400 drives the elastic member 300 to deform. After the first moving contact piece 410 and the second moving contact piece 420 are clamped on the upper and lower sides of the static contact, the elastic restoring force generated by the elastic member 300 acts on the first moving contact piece 410 and the second moving contact piece 420, so that the first moving contact piece 410 and the second moving contact piece 420 are tightly attached to the upper and lower walls of the static contact, thereby ensuring that the two moving contact pieces are stably closed with the static contact.
[0045] In order to improve the stability of the first moving contact piece 410 and the second moving contact piece 420, a limiting member 200 fixedly connected to the first mounting member 110 is provided between the first moving contact piece 410 and the second moving contact piece 420. Therefore, in the open state, the first moving contact piece 410 and the second moving contact piece 420 can always abut against the limiting member 200 under the action of the elastic member 300, so that the first moving contact piece 410 and the second moving contact piece 420 play a limiting role, ensuring that the moving contact 400 is in a centered position relative to the mounting seat 100, thereby avoiding the first moving contact piece 410 and the second moving contact piece 420 from tilting.
[0046] It is worth mentioning that the limiting member 200 and the first mounting member 110 are integrally formed to reduce the assembly process.
[0047] Furthermore, the elastic member 300 includes a first elastic member 310 and a second elastic member 320 , one end of the first elastic member 310 is connected to the first mounting member 110 , and the other end is connected to the first moving contact piece 410 , and one end of the second elastic member 320 is connected to the second mounting member 120 , and the other end is connected to the second moving contact piece 420 .
[0048] In the present embodiment, since the limiting member 200 is located between the first moving contact piece 410 and the second moving contact piece 420, the first elastic member 310 and the second elastic member 320 are both in a compressed state, and the elastic restoring force generated by the first elastic member 310 acts on the first moving contact piece 410, so that the first moving contact piece 410 has a movement tendency toward the limiting member 200, thereby making the first moving contact piece 410 abut against the limiting member 200. Similarly, the second moving contact piece 420 also abuts against the limiting member 200 under the action of the second elastic member 320, thereby ensuring that the first moving contact piece 410 and the second moving contact piece 420 are in a centered position relative to the mounting seat 100, thereby avoiding the first moving contact piece 410 and the second moving contact piece 420 from tilting.
[0049] Optionally, the first elastic member 310 and the second elastic member 320 are both springs.
[0050] Further, there are multiple first elastic members 310 and multiple second elastic members 320 , the multiple first elastic members 310 are symmetrically arranged about the first movable contact piece 410 , and the multiple second elastic members 320 are symmetrically arranged about the second movable contact piece 420 .
[0051] Specifically, the number of the first elastic members 310 and the number of the second elastic members 320 are both 2, and the two first elastic members 310 are symmetrically arranged with respect to the first moving contact piece 410, thereby ensuring that the first moving contact piece 410 is subjected to balanced force; the two second elastic members 320 are symmetrically arranged with respect to the second moving contact piece 420, thereby ensuring that the second moving contact piece 420 is subjected to balanced force.
[0052] Furthermore, the limiting member 200 is provided with a first clamping portion 210 , and the second mounting member 120 is provided with a second clamping portion 121 , and the first clamping portion 210 is clamped with the second clamping portion 121 .
[0053] In this embodiment, since the limiting member 200 is fixedly connected to the first mounting member 110, the first clamping portion 210 is clamped with the second clamping portion 121 provided on the second mounting member 120, so that the first mounting member 110 and the second mounting member 120 can be detachably connected, which facilitates assembly and improves installation efficiency.
[0054] Furthermore, the first mounting member 110 is provided with a third clamping portion 111 , and the second mounting member 120 is provided with a buckle 122 , and the third clamping portion 111 is clamped with the buckle 122 .
[0055] In this embodiment, the third clamping portion 111 provided on the first mounting member 110 is clamped with the third clamping portion 111 provided on the second mounting member 120, so as to achieve a detachable connection between the first mounting member 110 and the second mounting member 120, thereby further improving the installation stability.
[0056] In addition, the moving contact assembly 10 also includes a screw 500. The first mounting member 110 and the second mounting member 120 can be stably clamped together through the first clamping portion 210, the second clamping portion 121, the third clamping portion 111 and the buckle 122, ensuring that the first mounting member 110 and the second mounting member 120 are stably connected, making it convenient for the subsequent installation of the screw 500 on the first mounting member 110 and the second mounting member 120, thereby further improving the connection stability of the first mounting member 110 and the second mounting member 120.
[0057] In detail, the screw 500 passes through the first mounting member 110 and the second mounting member 120 in sequence.
[0058] Furthermore, the limiting member 200 is provided with a limiting portion 220 convexly, and the limiting portion 220 is used to abut against the side wall of the moving contact 400 . The limiting portion 220 can limit the second moving contact piece 420 .
[0059] Furthermore, the first mounting member 110 is provided with at least one positioning groove 112 , and the second mounting member 120 is provided with at least one positioning portion 123 convexly therefrom, and the positioning portion 123 is used to be embedded in the positioning groove 112 .
[0060] In this embodiment, during installation of the first mounting member 110 and the second mounting member 120 , the positioning portion 123 is first aligned with the positioning groove 112 , and the positioning portion 123 is embedded in the positioning groove 112 , thereby achieving installation positioning and improving installation efficiency.
[0061] like Figure 3 and Figure 4 As shown, there are three positioning grooves 112 and three positioning portions 123 , and one positioning groove 112 is trapezoidal, and the other two positioning grooves 112 are circular. The shapes of the three positioning portions 123 are respectively adapted to the shapes of the three positioning grooves 112 .
[0062] In summary, the utility model provides a moving contact assembly 10 and a switching switch, in which the moving contact 400 is always in contact with the limiting member 200 under the action of the elastic member 300 by setting the limiting member 200, so that the moving contact 400 maintains balance under the action of the elastic member 300 and the limiting action of the limiting member 200, and the moving contact 400 remains relatively centered relative to the mounting seat 100, which is beneficial to the closing of the moving contact 400 and the static contact, thereby improving the closing stability of the switching switch.
[0063] Furthermore, the utility model also provides a power distribution device, including the conversion switch in the above embodiment. The power distribution device can be configured as at least one of the following: a distribution box, a cable, a distribution cabinet, a motor, a switch socket, a lamp, an air conditioner, an electric water heater, an electric meter, a camera, a telephone, a computer, etc. The power distribution device can use the related structure of the conversion switch of the present application to realize intelligent management, but it is not limited to the above intelligently managed power distribution equipment, and can also be used in non-intelligent power distribution equipment in traditional industries.
[0064] Not only that, power distribution equipment can be used in smart scenarios, applied to smart homes, the Internet of Things industry and more smart scenarios to achieve intelligent management.
[0065] Optionally, the embodiments of the present application can be used for: fire-fighting electricity: fire control room, fire pumps, smoke exhaust facilities, fire elevators and their drainage pumps, fire emergency lighting, etc.; corridor lighting, duty lighting, guard lighting, obstacle sign lights; rail transit; security system power supply; electronic information room power supply; passenger elevator power; sewage pump; variable frequency speed regulation constant pressure water supply and domestic pump; main offices, conference rooms, general duty rooms and archives rooms, etc.
[0066] It is understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of the present application. The technical solutions of the present application can also be applied to other scenarios. For example, it is known to those skilled in the art that with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
[0067] The devices in the embodiments of the present application can be combined, divided, and deleted according to actual needs.
[0068] In the present application, the same or similar terminology concepts, technical solutions and / or application scenario descriptions are generally described in detail only the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of the present application, for the same or similar terminology concepts, technical solutions and / or application scenario descriptions that are not described in detail later, reference can be made to the previous related detailed descriptions.
[0069] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A moving contact assembly, characterized in that: It comprises a mounting seat (100), a limiting member (200), an elastic member (300) and a moving contact (400); The mounting seat (100) is connected to the limiting member (200); The moving contact (400) is movably arranged on the mounting seat (100); The elastic member (300) is arranged on the mounting seat (100) and is used to make the movable contact (400) have a tendency to move towards the limiting member (200), so that the movable contact (400) abuts against the limiting member (200).
2. The moving contact assembly according to claim 1, characterized in that: The mounting seat (100) comprises a first mounting member (110) and a second mounting member (120) which are connected to each other, and the limiting member (200) is connected to the first mounting member (110); The moving contact (400) comprises a first moving contact piece (410) and a second moving contact piece (420) which are arranged at intervals, the first moving contact piece (410) and the second moving contact piece (420) being respectively arranged on opposite sides of the limiting member (200), and the elastic member (300) is used to enable the first moving contact piece (410) and the second moving contact piece (420) to have a tendency to move relative to each other.
3. The moving contact assembly according to claim 2, characterized in that: The first movable contact piece (410) is located between the first mounting member (110) and the limiting member (200), and the second movable contact piece (420) is located between the second mounting member (120) and the limiting member (200); The elastic member (300) comprises a first elastic member (310) and a second elastic member (320), wherein one end of the first elastic member (310) is connected to the first mounting member (110), and the other end is connected to the first movable contact piece (410), and one end of the second elastic member (320) is connected to the second mounting member (120), and the other end is connected to the second movable contact piece (420).
4. The moving contact assembly according to claim 3, characterized in that: The number of the first elastic member (310) and the number of the second elastic member (320) are both multiple, the multiple first elastic members (310) are symmetrically arranged with respect to the first movable contact piece (410), and the multiple second elastic members (320) are symmetrically arranged with respect to the second movable contact piece (420).
5. The moving contact assembly according to claim 2, characterized in that: The limiting member (200) is provided with a first clamping portion (210), and the second mounting member (120) is provided with a second clamping portion (121), and the first clamping portion (210) is clamped with the second clamping portion (121).
6. The moving contact assembly according to claim 2, characterized in that: The first mounting member (110) is provided with a third clamping portion (111), and the second mounting member (120) is provided with a buckle (122), and the third clamping portion (111) is clamped with the buckle (122).
7. The moving contact assembly according to claim 2, characterized in that: The first mounting member (110) is provided with a positioning groove (112), and the second mounting member (120) is provided with a protruding positioning portion (123), and the positioning portion (123) is used to be embedded in the positioning groove (112).
8. The moving contact assembly according to claim 2, characterized in that: The limiting member (200) and the first mounting member (110) are integrally formed.
9. A transfer switch, characterized in that: It comprises a moving contact assembly as described in any one of claims 1 to 8.
10. A power distribution device, characterized in that: Comprising the conversion switch as claimed in claim 9.