Contact assembly and load switch

Abstract

The utility model provides a contact assembly and a load switch, and relates to the technical field of electrical equipment. The contact assembly comprises a shell, a static contact, a moving contact, a wiring piece and a flexible connection conductor. The static contact, the moving contact, the wiring piece and the flexible connection conductor are all arranged in the shell, and the static contact is provided with a first contact part; the moving contact is rotatably arranged on the shell, one end of the moving contact is provided with a second contact part, the other end of the moving contact is provided with a connecting part, and the second contact part is used for being connected with the first contact part; one end of the flexible connection conductor is connected with the wiring piece, and the other end is connected with the connection part; the part, located in the shell, of the wiring piece is of a linear extending structure, the occupied space in the shell is small, the installation structure of the shell for fixing the wiring piece is simplified, the structure of the wiring piece is simple, and technological forming and assembling are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical equipment technical field, specifically, a contact assembly and load switch. BACKGROUND

[0002] To ensure the safe operation of the power system, the electrical equipment with reliable on, off and carrying capacity of normal current is usually set in the power system, which can also realize on, carrying and breaking current under abnormal circuit fault (such as short circuit).

[0003] The existing technology of the electric meter will adopt the built-in load switch to realize the control of the main line power, however, the related electrical components structure such as moving and static contact in the existing product is complex, the layout is unreasonable, and it is not convenient to assemble. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of contact assembly and load switch, its structure is simple, the layout of multiple components is reasonable in shell interior, it is convenient to assemble.

[0005] The embodiment of the utility model is implemented as follows:

[0006] Firstly, the utility model provides a kind of contact assembly, comprising:

[0007] Shell;

[0008] Static contact, the static contact is set to the shell, and the static contact is provided with first contact part;

[0009] Moving contact, the moving contact is rotatably set to the shell, one end of the moving contact is provided with second contact part, the other end is provided with connecting part, and the second contact part is used to connect with the first contact part;

[0010] Wiring piece, the wiring piece is set to the shell and extends out of the shell, and the part of the wiring piece in the shell interior is in straight line extension structure;

[0011] Soft connection conductor, one end of the soft connection conductor is connected with the wiring piece, the other end is connected with the connecting part and with the second contact part in the same side of the moving contact.

[0012] In optional implementation, the shell is provided with pivot, the second contact part rotates around the pivot, and the second contact part and the connecting part are located at two ends of the pivot respectively.

[0013] In an optional embodiment, the soft connection conductor comprises a first segment, a second segment and a third segment connected in sequence, the first segment is connected with the wiring member, the second segment is in a bent structure, the connecting portion is arranged on the side of the movable contact close to the wiring member, and the third segment is connected with the connecting portion.

[0014] In an optional embodiment, the third segment is welded with the connecting portion, and the third segment extends from the welding position towards the second contact portion.

[0015] In an optional embodiment, the soft connection conductor is in a C shape.

[0016] In an optional embodiment, a magnetic enhancer is arranged on one side of the connecting portion, and an iron block is arranged on the other side, the iron block is located between the connecting position of the third segment and the connecting portion and the rotating shaft.

[0017] In an optional embodiment, the wiring member comprises a first lead-out portion and a first end portion, the first lead-out portion is in a straight extension structure, at least part of the first lead-out portion is arranged in the shell, and at least part of the first lead-out portion is arranged outside the shell; the first end portion is connected with one end of the first lead-out portion extending out of the shell perpendicularly, and the first end portion is used for connecting with a wiring terminal; the shell is provided with a first mounting groove, and the part of the first lead-out portion arranged in the shell is mounted in the first mounting groove.

[0018] In an optional embodiment, the stationary contact further comprises a second lead-out portion and a third lead-out portion, one end of the second lead-out portion is connected with the first contact portion at an angle, and the other end is connected with the third lead-out portion at an angle; the stationary contact further comprises a second end portion, the second end portion is connected with the third lead-out portion perpendicularly, and the second end portion is used for connecting with a wiring terminal.

[0019] In an optional embodiment, the shell is provided with a second mounting groove, and the first contact portion is mounted in the second mounting groove.

[0020] In a second aspect, the utility model provides a load switch which comprises the contact assembly according to any one of the preceding embodiments.

[0021] The contact assembly and the load switch have the beneficial effects that the movable contact can rotate relative to the shell under the driving action, the second contact part of the movable contact moves close to or away from the first contact part of the static contact, and thus the movable contact and the static contact are closed or opened; the connecting part of the movable contact is connected with the wiring member through the soft connection conductor, and thus in the closed state, the wiring member, the soft connection conductor, the movable contact and the static contact form a loop; the part of the wiring member located inside the shell is in a linear extension structure, the wiring member occupies less space in the shell, the mounting structure of the shell for fixing the wiring member is simplified, and the wiring member itself has a simple structure, and process forming and assembly are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0023] Figure 1 The contact assembly structure schematic diagram provided by the embodiments of the present application is shown in the figure.

[0024] Figure 2 The contact assembly part structure schematic diagram provided by the embodiments of the present application is shown in the figure.

[0025] Icon: 10-contact assembly; 100-shell; 110-first mounting groove; 120-second mounting groove; 130-rotating shaft; 200-static contact; 210-first contact part; 220-second lead-out part; 230-third lead-out part; 240-second end part; 300-movable contact; 310-second contact part; 320-connecting part; 400-wiring member; 410-first lead-out part; 420-first end part; 500-soft connection conductor; 510-first section; 520-second section; 530-third section; 600-magnetic increasing member; 700-iron block. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application, and obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings 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 drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0028] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained 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" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In order to ensure the safe operation of the power system, electrical equipment with reliable on-off, breaking and carrying normal current capacity is usually provided in the power system, and the on-off, carrying and breaking current functions of the electrical equipment are usually completed by related parts such as moving contact and static contact. However, the existing contact assembly structure is complex and the layout is unreasonable.

[0033] Based on the above problems, please refer to Figure 1 and Figure 2The utility model embodiment provides a kind of contact assembly 10, applied to electrical equipment field, for example, it can be applicable to circuit breaker, load switch and the like device.

[0034] In detail, contact assembly 10 includes shell 100, static contact 200, movable contact 300, wiring piece 400 and flexible connection conductor 500.

[0035] Wherein, shell 100 is provided with pivot 130, static contact 200, movable contact 300, wiring piece 400 and flexible connection conductor 500 are all arranged in shell 100, and static contact 200 is provided with first contact portion 210;Movable contact 300 is rotatably arranged in the pivot 130 of shell 100, and one end of movable contact 300 is provided with second contact portion 310, and the other end is provided with connecting portion 320, and second contact portion 310 and connecting portion 320 are located at both ends of pivot 130 respectively, and second contact portion 310 is used to be connected with first contact portion 210;One end of flexible connection conductor 500 is connected with wiring piece 400, and the other end is connected with connecting portion 320.

[0036] In the embodiment, movable contact 300 can rotate relative to shell 100 under the driving action, so that second contact portion 310 of movable contact 300 moves close to or away from first contact portion 210 of static contact 200, to realize the closing or opening of movable contact 300 and static contact 200;Connecting portion 320 of movable contact 300 is also connected with wiring piece 400 through flexible connection conductor 500, so that in the closing state, wiring piece 400, flexible connection conductor 500, movable contact 300 and static contact 200 form a loop;The connection position of flexible connection conductor 500 and connecting portion 320 and second contact portion 310 are all located on the same side of movable contact 300, and the part of wiring piece 400 inside shell 100 is in linear extension structure, not only less space in shell 100, but also simplify the mounting structure of shell 100 fixed wiring piece 400, and make the structure of wiring piece 400 simple, convenient process forming and assembly.

[0037] Therefore, the contact assembly 10 provided in the embodiment has simple structure, and the layout of multiple components inside the shell 100 is reasonable, which not only facilitates assembly, but also improves structural stability.

[0038] Specifically, flexible connection conductor 500 includes first segment 510, second segment 520 and third segment 530 connected in sequence, first segment 510 is connected with wiring piece 400, third segment 530 is connected with movable contact 300, and second segment 520 is in bending structure.

[0039] In the embodiment, the second end is linearly extended along the bottom wall of the housing 100, and the other part is arc-shaped and extends upward, so as to extend the length of the second section 520 as much as possible, so that the length of the second section 520 is greater than the corresponding length of the rotation path of the movable contact 300, so as to ensure that the soft connection conductor 500 has a certain activity allowance between the terminal 400 and the movable contact 300, so that the second section 520 of the soft connection conductor 500 can move along with the movable contact 300, and the movement of the movable contact 300 is avoided due to the too short length of the soft connection conductor 500.

[0040] In addition, the connecting portion 320 is arranged on the side of the movable contact 300 close to the terminal 400, and the third section 530 is connected with the connecting portion 320, that is, the third section 530 is connected with the bottom wall of the movable contact 300, so as to avoid interference with other components when the soft connection conductor 500 is connected to the top wall of the movable contact 300.

[0041] Further, the third section 530 is welded with the connecting portion 320, and the third section 530 extends from the welding position to the direction of the second contact portion 310, that is, the third section 530 extends from the welding position with the connecting portion 320 to the right side of the second contact portion 310 as shown in the figure, that is, the third section 530 extends in the direction away from the terminal 400, so that the soft connection conductor 500 as a whole has a bending structure, so as to flow out the activity allowance of the soft connection conductor 500.

[0042] Further, the soft connection conductor 500 is in a C shape.

[0043] In the embodiment, the soft connection conductor 500 is arranged in a C-shaped bending structure, so that the soft connection conductor 500 has a certain activity allowance between the terminal 400 and the movable contact 300 in the case of rotation of the movable contact 300, so that part of the soft connection conductor 500 can move along with the movable contact 300, and the movement of the movable contact 300 is avoided due to the too short length of the soft connection conductor 500.

[0044] Further, the contact assembly 10 further comprises a magnetic member 600 and an iron block 700, the magnetic member 600 is arranged on one side of the connecting portion 320, and the iron block 700 is arranged on the other side of the connecting portion 320, and the iron block 700 is located between the connecting position of the third section 530 and the connecting portion 320 and the rotation shaft 130.

[0045] In the embodiment, when the short-circuit current passes through the movable contact 300 in the case of short circuit, electromagnetic attraction is generated to make the magnetic member 600 attract the iron block 700, so as to apply a force to the movable contact 300 to make the second contact portion 310 move towards the static contact 200, so as to avoid repulsion between the movable contact 300 and the static contact, thereby improving the stability and short-circuit resistance of the contact assembly 10.

[0046] Further, the wiring member 400 comprises a first leading portion 410 and a first end portion 420.

[0047] In the embodiment, the first leading portion 410 is in a straight line extending structure, which is simple in structure, simple in process forming and low in cost, and the wiring member 400 located in the shell 100 occupies less space.

[0048] At least part of the first leading portion 410 is arranged in the shell 100, and at least part of the first leading portion 410 is arranged outside the shell 100; the first end portion 420 is perpendicularly connected with one end of the first leading portion 410 extending outside the shell 100, and the first end portion 420 is used for connecting with a wiring terminal.

[0049] Optionally, the first leading portion 410 and the first end portion 420 can be made by an integral forming process, and the formed wiring member 400 has high structural strength and stability, simplifies the assembly process, and improves the precision and consistency of the wiring member 400.

[0050] Further, the shell 100 is provided with a first mounting groove 110, and the part of the first leading portion 410 located in the shell 100 is mounted in the first mounting groove 110.

[0051] In the embodiment, since the part of the first leading portion 410 located in the shell 100 is in a straight line structure, the first mounting groove 110 is also in a straight line extending structure, thereby simplifying the structure of the first mounting groove 110.

[0052] Specifically, taking the drawing as a reference, the first mounting groove 110 is located at the left side wall and the bottom wall of the shell 100, and a through hole of the first mounting groove 110 is arranged at the bottom wall for the wiring member 400 to extend into the inside of the shell 100.

[0053] Further, the static contact 200 further comprises a second leading portion 220 and a third leading portion 230, one end of the second leading portion 220 is connected with the first contact portion 210 at an angle, and the other end is connected with the third leading portion 230 at an angle.

[0054] Specifically, the one end of the second leading portion 220 is perpendicularly connected with the first contact portion 210 by extending into the bottom wall of the shell 100, and the other end is perpendicularly connected with the third leading portion 230, so that the part of the static contact 200 located outside the shell 100 forms a bending structure, thereby facilitating avoiding installation of other electrical elements.

[0055] Further, the static contact 200 further comprises a second end portion 240, the second end portion 240 is perpendicularly connected with the third leading portion 230, and the second end portion 240 is used for connecting with a wiring terminal.

[0056] In the embodiment, the second end portion 240 and the first end portion 420 are both plate-shaped, and the second end portion 240 is in the same plane as the first end portion 420, so as to facilitate connection with the terminal of the electric meter.

[0057] It should be noted that the first end portion 420 and the second end portion 240 are respectively used for connection with different terminals.

[0058] Further, the shell 100 is provided with a second mounting groove 120, and the first contact portion 210 is mounted in the second mounting groove 120.

[0059] In the embodiment, the second mounting groove 120 is arranged on the bottom wall of the shell 100 and extends along the horizontal direction of the bottom wall of the shell 100, and a through hole is further arranged on the left side of the bottom wall of the shell 100 corresponding to the second mounting groove 120, so as to facilitate the second lead-out portion 220 to extend into the second mounting groove 120 in the shell 100 and be connected with the first contact portion 210.

[0060] In summary, the contact assembly 10 is provided, the movable contact 300 can rotate relative to the shell 100 under the driving action, so that the second contact portion 310 of the movable contact 300 moves close to or away from the first contact portion 210 of the static contact 200, so as to realize the closing or opening of the movable contact 300 and the static contact 200; the connecting portion 320 of the movable contact 300 is further connected with the wiring member 400 through the soft connection conductor 500, so as to form a loop in the closing state of the wiring member 400, the soft connection conductor 500, the movable contact 300 and the static contact 200; the part of the wiring member 400 located in the shell 100 is in a straight line extension structure, which not only occupies less space in the shell 100, but also simplifies the mounting structure of the shell 100 for fixing the wiring member 400, and makes the structure of the wiring member 400 simple, and facilitates process forming and assembly. Therefore, the contact assembly 10 has simple structure, and the layout of multiple parts in the shell 100 is reasonable, which not only facilitates assembly, but also improves structural stability.

[0061] Further, the utility model embodiment still provides a kind of load switch, and load switch includes the contact assembly 10 in above-mentioned implementation, of course, load switch also includes coil assembly, armature and transmission connecting rod etc.

[0062] In the embodiment, the coil assembly, the armature and the transmission connecting rod are sequentially connected with the movable contact 300, by energizing the coil assembly, the armature can be driven to rotate, and the transmission connecting rod is moved by the armature, finally the movable contact 300 is rotated by the transmission connecting rod, so as to realize the closing or opening of the movable contact 300 and the static contact 200.

[0063] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. 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 contact assembly (10), characterized in that, include: Casing (100); A stationary contact (200) is disposed in the housing (100), and the stationary contact (200) is provided with a first contact portion (210); A movable contact (300) is rotatably disposed on the housing (100). One end of the movable contact (300) is provided with a second contact portion (310), and the other end is provided with a connecting portion (320). The second contact portion (310) is used to connect with the first contact portion (210). A connector (400) is disposed in the housing (100) and extends out of the housing (100), and the portion of the connector (400) located inside the housing (100) has a straight-line extension structure; A flexible conductor (500) is provided, one end of which is connected to the connector (400), and the other end is connected to the connection part (320) and is located on the same side of the moving contact (300) as the second contact part (310).

2. The contact assembly (10) according to claim 1, characterized in that, The housing (100) is provided with a rotating shaft (130), the second contact part (310) rotates around the rotating shaft (130), and the second contact part (310) and the connecting part (320) are respectively located at both ends of the rotating shaft (130).

3. The contact assembly (10) according to claim 1 or 2, characterized in that, The flexible conductor (500) includes a first segment (510), a second segment (520), and a third segment (530) connected in sequence. The first segment (510) is connected to the connector (400), the second segment (520) has a bent structure, the connecting part (320) is disposed on the side of the moving contact (300) near the connector (400), and the third segment (530) is connected to the connecting part (320).

4. The contact assembly (10) according to claim 3, characterized in that, The third segment (530) is welded to the connecting portion (320), and the third segment (530) extends from the welding position toward the second contact portion (310).

5. The contact assembly (10) according to claim 4, characterized in that, The flexible connector conductor (500) is C-shaped.

6. The contact assembly (10) according to claim 3, characterized in that, A magnetizing element (600) is provided on one side of the connecting part (320), and an iron block (700) is provided on the other side. The iron block (700) is located between the connection position of the third section (530) and the connecting part (320) and the rotating shaft (130) of the housing (100).

7. The contact assembly (10) according to claim 1 or 2, characterized in that, The connector (400) includes a first lead-out portion (410) and a first end portion (420). The first lead-out portion (410) has a straight extension structure. At least a portion of the first lead-out portion (410) is disposed inside the housing (100), and at least a portion of the first lead-out portion (410) is disposed outside the housing (100). The first end portion (420) is perpendicularly connected to one end of the first lead-out portion (410) that extends outside the housing (100). The first end portion (420) is used to connect to a terminal block. The housing (100) is provided with a first mounting groove (110). The portion of the first lead-out portion (410) located inside the housing (100) is installed in the first mounting groove (110).

8. The contact assembly (10) according to claim 1 or 2, characterized in that, The stationary contact (200) further includes a second lead-out portion (220) and a third lead-out portion (230). One end of the second lead-out portion (220) is connected at an angle to the first contact portion (210), and the other end is connected at an angle to the third lead-out portion (230). The stationary contact (200) further includes a second end portion (240), which is perpendicularly connected to the third lead-out portion (230) and is used to connect to a terminal block.

9. The contact assembly (10) according to claim 1 or 2, characterized in that, The housing (100) is provided with a second mounting groove (120), and the first contact portion (210) is mounted in the second mounting groove (120).

10. A load switch, characterized in that, Includes the contact assembly (10) as described in any one of claims 1-9.

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