Coil framework for electromagnetic switch and permanent magnet switch structure with coil framework for electromagnetic switch

Abstract

The utility model relates to the field of permanent magnet switches, in particular to a coil framework for an electromagnetic switch and a permanent magnet switch structure with the coil framework for the electromagnetic switch, which comprises a framework body provided with a lead mechanism. The lead mechanism comprises a first lead end and a second lead end; the first lead end comprises a first lead block arranged on the framework body, and a first lead hole is formed in the first lead block; the second lead wire end comprises a second lead wire block, second lead wire holes are formed in the second lead wire block, and the second lead wire holes comprise first-class lead wire holes and second-class lead wire holes; according to the utility model, through the arrangement of the first lead end and the second lead end, the leading-out ends of the holding coil and the pull-in coil can be guided and arranged; and the first lead end and the second lead end also play a good isolation role, so that short circuit caused by contact between the holding coil and the pull-in coil and adjacent components is avoided.

Description

Technical Field

[0001] The utility model relates to the field of permanent magnetic switches, in particular to a coil skeleton for an electromagnetic switch and a permanent magnetic switch structure having the coil skeleton for the electromagnetic switch. Background Art

[0002] The electromagnetic switch is one of the key components of the automobile starter. In addition to controlling the engagement of the starter pinion and the engine flywheel (function I), it is also responsible for controlling the connection and disconnection of the starter motor main circuit (function II).

[0003] The realization of these two functions mainly requires the reliability of the circuits of the two coils (holding coil and pull-in coil). Unreliable circuits will cause the coils to short-circuit or open-circuit, thereby causing the switch to lose its proper function.

[0004] A good design of the switch terminal will avoid coil loop short circuit and open circuit, so the terminal isolation design will solve the coil loop short circuit and open circuit to a large extent.

[0005] After searching, the existing patent 201020216808.0 - Assembly structure of moving contact seat and coil frame of starter electromagnetic switch does not clearly disclose the technical content for solving the above problems.

[0006] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing permanent magnet switch. Utility Model Content

[0007] The utility model aims to provide a coil skeleton structure which can realize isolation between a holding coil and an outlet end of one end of a pull-in coil.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A coil skeleton for an electromagnetic switch, comprising a skeleton body, wherein the skeleton body is provided with a lead mechanism;

[0010] The lead mechanism includes a first lead end and a second lead end;

[0011] The first lead end and the second lead end are distributed on the skeleton body at relative intervals;

[0012] The skeleton body is provided with a wire hole; the first lead end and the second lead end each correspond to a wire hole;

[0013] The first lead end includes a first lead block provided on the skeleton body, and the first lead block is provided with a first lead hole;

[0014] The second lead end includes a second lead block, the second lead block is provided with second lead holes, the second lead holes include first-type lead holes and second-type lead holes, and the first-type lead holes and the second-type lead holes are distributed at intervals.

[0015] The side surfaces of the first lead end and the second lead end are both provided with communicating side grooves, and the communicating side grooves on the first lead end or the second lead end are both connected to the corresponding first lead hole or the second lead hole.

[0016] The vertical distance between the first type of lead hole and the central axis of the coil frame is greater than the vertical distance between the second type of lead hole and the central axis of the coil frame.

[0017] A lateral through hole is provided on the side of the second lead block, and the lateral through hole is connected to a type of lead hole.

[0018] Lead terminals are provided in both the first lead hole and the second lead hole; the lead terminals include a terminal body, and a lead through hole is provided on the terminal body.

[0019] The lead terminal is connected to the first lead hole or the second type lead hole through a limiting component; the limiting component includes a limiting protrusion arranged on the inner wall of the first lead hole or the second type lead hole and a positioning notch arranged on the terminal body; the terminal body is sleeved on the limiting protrusion through the positioning notch.

[0020] The limiting component further includes a supporting rib, which is arranged on the inner wall of the first lead-wire hole or the second type of lead-wire hole; the supporting rib is arranged on the side of the limiting protrusion close to the skeleton body.

[0021] The corners of the first lead-wire hole, the first type lead-wire hole and the second type lead-wire hole are all transitioned by arc surfaces.

[0022] A permanent magnet switch structure includes a working coil, a static iron core and a coil frame; the coil frame is provided with a working coil; the working coil includes a holding coil and an attraction coil; the holding coil and the attraction coil each have two outlet terminals; the outlet terminals on the holding coil and the attraction coil both pass through the coil frame.

[0023] The outgoing wire ends of one end of the holding coil and the attracting coil are simultaneously connected to the first connecting hole of the coil frame; the outgoing wire ends of the other end of the holding coil and the attracting coil are respectively connected to the first type lead hole and the second type lead hole; the outgoing wire end on the holding coil passes through the first type lead hole to pass through the coil frame and overlap the static iron core.

[0024] The advantages of the present invention are:

[0025] The utility model discloses a coil frame for an electromagnetic switch and a permanent magnet switch structure with the coil frame for the electromagnetic switch.

[0026] The utility model can guide the output ends of the holding coil and the pull-in coil by setting the first lead end and the second lead end; the first lead end and the second lead end also play a good isolation role, avoiding the holding coil and the pull-in coil from contacting with adjacent components and causing short circuits.

[0027] At the same time, the utility model distributes the lead holes of the first type and the lead holes of the second type at intervals, so that the lead ends of the holding coil and one end of the pull-in coil are distributed at intervals, thereby better avoiding the existence of short-circuit working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following is a brief description of the contents and marks in the drawings of the utility model specification:

[0029] Figure 1 This is a schematic structural diagram of the coil skeleton in the present invention from the first perspective.

[0030] Figure 2 This is a structural diagram of the coil skeleton in the present invention from a second perspective.

[0031] Figure 3 This is a schematic structural diagram of the coil skeleton in the present invention from a third perspective.

[0032] Figure 4 This is a structural diagram of the permanent magnetic switch structure of the utility model.

[0033] Figure 5 This is a schematic structural diagram of the lead terminal in the utility model.

[0034] The marks in the above figure are:

[0035] 1. Coil skeleton, 2. Coil, 3. Static iron core, 4. Lead terminal. DETAILED DESCRIPTION

[0036] The following describes the preferred embodiment with reference to the accompanying drawings to further illustrate the specific implementation of the present invention.

[0037] A coil bobbin 1 for an electromagnetic switch includes a bobbin body 101, on which a lead mechanism is provided; the lead mechanism includes a first lead end 11 and a second lead end 12; the first lead end 11 and the second lead end 12 are provided to guide the output ends of a holding coil and a pull-in coil; the first lead end 11 and the second lead end 12 also provide good isolation, preventing the holding coil and the pull-in coil from contacting adjacent components and causing a short circuit.

[0038] The coil skeleton 1 disclosed in the present invention is mainly used in electromagnetic switches, and its essential purpose is to be used for winding holding coils and attracting coils; the coil skeleton 1 disclosed in the present invention mainly includes a skeleton body 101, and the bracket body is the main structure of the coil skeleton 1, and in the present invention, a lead mechanism is provided on the skeleton body 101; the lead mechanism is mainly used for the lead-in operation of the holding coil and the attracting coil output end, and in the present invention, the lead-in mechanism includes a first lead end 11 and a second lead end 12; the first lead end 11 and the second lead end 12 are relatively spaced apart on the skeleton body 101; such a setting can realize the threading operation of the holding coil and the attracting coil output ends.

[0039] In the present invention, a wire hole is provided on the skeleton body 101; the first lead end 11 and the second lead end 12 respectively correspond to a wire hole; the wire hole serves as a connection, facilitating the end of the holding coil or the attracting coil on the skeleton body 101 to enter the corresponding lead end.

[0040] In the present invention, the first lead end 11 includes a first lead block 111 provided on the skeleton body 101, and the first lead block 111 is provided with a first lead hole 112; the first lead block 111 is arranged on the skeleton body 101, and the first lead hole 112 is a through-hole structure, and the first lead hole 112 is provided through the first lead block 111; and the second lead end 12 includes a second lead block 122, and the second lead block 122 is provided with a second lead hole 121, and the second lead hole 121 is provided through the second lead block 122 is set; the second lead block 122 is set on the skeleton body 101; in the present utility model, the first lead block 111 and the second lead block 122 and the skeleton body 101 can adopt a detachable structure or an integrated structure. The detachable structure generally requires that the first lead block 111 and the second lead block 122 and the skeleton body 101 can be connected by bolts, clamping and other connection methods. The integrated structure generally requires that the first lead block 111 and the second lead block 122 and the skeleton body 101 are integrally injection molded.

[0041] In the present invention, the second lead-wire hole 121 includes a first-class lead-wire hole 1212 and a second-class lead-wire hole 1211, and the first-class lead-wire hole 1212 and the second-class lead-wire hole 1211 are distributed at intervals; the present invention is based on the setting of the first-class lead-wire hole 1212 and the second-class lead-wire hole 1211, which can respectively realize the lead-in operation of the holding coil and one end of the attraction coil, and at the same time requires that the first-class lead-wire hole 1212 and the second-class lead-wire hole 1211 are distributed at intervals; it can realize that the appearance end of the holding coil and one end of the attraction coil are distributed at intervals on the coil skeleton 1, thus forming an autonomous isolation point to avoid short-circuiting of the holding coil and the attraction coil at this end.

[0042] Furthermore, in the present invention, the side surfaces of the first lead end 11 and the second lead end 12 are provided with connecting side grooves 102, and the connecting side grooves 102 on the first lead end 11 or the second lead end 12 are connected to the corresponding first lead hole 112 or the second lead hole 121; in the present invention, the connecting side grooves 102 mainly play a connecting role, which facilitates the placement of each coil output terminal in the corresponding lead end during subsequent use.

[0043] Furthermore, in the present invention, the vertical distance between the first-class lead hole 1212 and the central axis of the coil frame 1 is greater than the vertical distance between the second-class lead hole 1211 and the central axis of the coil frame 1; such a setting makes the first-class lead hole 1212 located on the outside of the coil frame 1; and the second-class lead hole 1211 located on the inside of the coil frame 1; such a setting makes it convenient to keep the wire end on the coil bent and overlapped on the static iron core 3 during subsequent use.

[0044] Furthermore, in the present invention, a lateral through hole 1213 is provided on the side of the second lead block 122, and the lateral through hole 1213 is connected to a type of lead hole 1212; the lateral through hole 1213 plays a connecting role, facilitating the connection between the type of lead hole 1212 and the static iron core 3, and then facilitating subsequent use to keep the wire end on the coil bent and overlapped on the static iron core 3.

[0045] Furthermore, in the present invention, a lead terminal 4 is provided in both the first lead hole 112 and the second lead hole 1211; the lead terminal 4 in the present invention plays a role of connection and communication, and also facilitates the connection between subsequent output terminals and subsequent components; in the present invention, the lead terminal 4 includes a terminal body 401, and the terminal body 401 is provided with a lead through hole; the terminal body 401 can be inserted into the first lead hole 112 or the second lead hole 1211, and the lead through hole plays a role of communication, making it convenient for the output terminal to be connected to the lead terminal 4.

[0046] Furthermore, in the present invention, the lead terminal 4 is connected to the first lead hole 112 or the second lead hole 1211 through a limiting component 4-1; the setting of the limiting component 4-1 facilitates the installation and limiting of the lead terminal 4 on the skeleton body 101, and in the present invention, the limiting component 4-1 includes a limiting protrusion 41 provided on the inner wall of the first lead hole 112 or the second lead hole 1211 and a positioning notch 402 provided on the terminal body 401; the terminal body 401 is sleeved through the positioning notch 402. On the limiting protrusion 41; the positioning notch 402 of the utility model is arranged on the terminal body 401, and a limiting protrusion 41 is provided on the inner wall of the first lead hole 112 or the second type lead hole 1211; when the terminal body 401 is subsequently inserted into the corresponding first lead hole 112 or the second type lead hole 1211, the positioning notch 402 is inserted into the corresponding limiting protrusion 41, and the limiting protrusion 41 of the utility model plays a good limiting role, which can well prevent the lead terminal 4 from rotating in the first lead hole 112 or the second type lead hole 1211.

[0047] Furthermore, in the present invention, the limiting component 4-1 also includes a support rib 42, which is arranged on the inner wall of the first lead hole 112 or the second lead hole 1211; the support rib 42 is arranged on the side of the limiting protrusion 41 close to the skeleton body 101; the support rib 42 plays a good bottom support role, avoiding excessive insertion of the terminal body 401 in the first lead hole 112 or the second lead hole 1211.

[0048] Furthermore, in the present invention, the corners of the first lead-wire hole 112, the first type lead-wire hole 1212 and the second type lead-wire hole 1211 are all made of arc surface transition; such a setting can achieve a smooth transition at the corners of the first lead-wire hole 112, the first type lead-wire hole 1212 and the second type lead-wire hole 1211, and avoid irregular bending of the coil outlet end to form stress points.

[0049] A permanent magnet switch structure includes a working coil, a static iron core 3 and the coil skeleton 1; the coil skeleton 1 is provided with a working coil; the working coil includes a holding coil and an attraction coil; the holding coil and the attraction coil each have two output terminals; the output terminals on the holding coil and the attraction coil both pass through the coil skeleton 1; through the provision of the coil skeleton 1, the utility model can separate the output terminals of the holding coil and the attraction coil, avoid interconnection between the attraction coil, the holding coil and the static iron core 3, and reduce or avoid the occurrence of short circuit problems.

[0050] In addition, the utility model can guide the output ends of the holding coil and the attraction coil through the provision of the first lead end 11 and the second lead end 12; the first lead end 11 and the second lead end 12 also play a good isolation role, avoiding the holding coil and the attraction coil from contacting with adjacent components and causing short circuits.

[0051] At the same time, the utility model distributes the lead holes 1212 of the first type and the lead holes 1211 of the second type at intervals, so that the lead ends of the holding coil and one end of the attracting coil are distributed at intervals, thereby better avoiding the existence of short-circuit conditions.

[0052] Furthermore, in the present invention, the outgoing wire ends of the holding coil and the attracting coil at one end are simultaneously connected to the first connecting hole of the coil skeleton 1; the outgoing wire ends of the other ends of the holding coil and the attracting coil are respectively connected to the first lead hole 1212 and the second lead hole 1211; the outgoing wire end on the holding coil passes through the coil skeleton 1 through the first lead hole 1212 and overlaps with the static iron core 3; based on such a setting, the first lead hole 1212 and the second lead hole 1211 can isolate the outgoing wire ends of the holding coil and the attracting coil at one end, thereby avoiding interconnection between the attracting coil, the holding coil and the static iron core 3.

[0053] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A coil bobbin for an electromagnetic switch, characterized in that: It comprises a skeleton body, on which a lead mechanism is provided; The lead mechanism includes a first lead end and a second lead end; The first lead end and the second lead end are distributed on the skeleton body at relative intervals; The skeleton body is provided with a wire hole; the first lead end and the second lead end each correspond to a wire hole; The first lead end includes a first lead block provided on the skeleton body, and the first lead block is provided with a first lead hole; The second lead end includes a second lead block, the second lead block is provided with second lead holes, the second lead holes include first-type lead holes and second-type lead holes, and the first-type lead holes and the second-type lead holes are distributed at intervals.

2. The coil bobbin for an electromagnetic switch according to claim 1, characterized in that: The side surfaces of the first lead end and the second lead end are both provided with communicating side grooves, and the communicating side grooves on the first lead end or the second lead end are both connected to the corresponding first lead hole or the second lead hole.

3. The coil bobbin for an electromagnetic switch according to claim 1, characterized in that: The vertical distance between the first type of lead hole and the central axis of the coil frame is greater than the vertical distance between the second type of lead hole and the central axis of the coil frame.

4. A coil bobbin for an electromagnetic switch according to any one of claims 1 or 3, characterized in that: A lateral through hole is provided on the side of the second lead block, and the lateral through hole is connected to a type of lead hole.

5. The coil bobbin for an electromagnetic switch according to claim 1, characterized in that: Lead terminals are provided in both the first lead hole and the second lead hole; the lead terminals include a terminal body, and a lead through hole is provided on the terminal body.

6. The coil bobbin for an electromagnetic switch according to claim 5, characterized in that: The lead terminal is connected to the first lead hole or the second type lead hole through a limiting component; the limiting component includes a limiting protrusion arranged on the inner wall of the first lead hole or the second type lead hole and a positioning notch arranged on the terminal body; the terminal body is sleeved on the limiting protrusion through the positioning notch.

7. The coil bobbin for an electromagnetic switch according to claim 6, characterized in that: The limiting component further includes a supporting rib plate, and the supporting rib plate is arranged on the inner wall of the first lead-in hole or the second type lead-in hole; The supporting ribs are arranged on a side of the limiting protrusion close to the frame body.

8. The coil bobbin for an electromagnetic switch according to claim 1, characterized in that: The corners of the first lead-wire hole, the first type lead-wire hole and the second type lead-wire hole are all transitioned by arc surfaces.

9. A permanent magnetic switch structure, characterized in that: It includes a working coil, a static iron core and a coil frame as described in any one of claims 1 to 8; the coil frame is provided with a working coil; the working coil includes a holding coil and an attraction coil; the holding coil and the attraction coil each have two output terminals; the output terminals on the holding coil and the attraction coil both pass through the coil frame.

10. A permanent magnetic switch structure according to claim 9, characterized in that: The outgoing wire ends of one end of the holding coil and the attracting coil are simultaneously connected to the first connecting hole of the coil frame; the outgoing wire ends of the other end of the holding coil and the attracting coil are respectively connected to the first type lead hole and the second type lead hole; the outgoing wire end on the holding coil passes through the first type lead hole to pass through the coil frame and overlap the static iron core.

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