Circuit board fixing device and relay

Abstract

The circuit board fixing device comprises a coil frame and a cover body, the coil frame is provided with a pin seat, a pin is inserted into the pin seat, the pin is used for being electrically connected with one end of a circuit board, and a limiting part is arranged on one side, facing the coil frame, of the cover body and used for limiting the other end of the circuit board and preventing the circuit board from shaking. The side, facing the coil frame, of the cover body is provided with a yoke clamp, the side, facing the coil frame, of the cover body is further provided with a partition plate, the partition plate is located between the limiting part and the yoke clamp, the creepage distance between the circuit board and the yoke clamp is increased, and the circuit board is prevented from being broken down.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a circuit board fixing device. Background Art

[0002] A relay is an electronic control device that has an input circuit and an output circuit. It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] The relay mainly includes a circuit board, a driving device, and a magnetic circuit. The circuit board needs to be fixed inside the relay to prevent the relay from shaking during operation. Generally, one end of the circuit board is electrically connected to the pin of the coil frame through welding, but the other end of the circuit board is not connected to any limit device, which poses a risk of shaking during operation; at the same time, there is a lack of a partition between the circuit board and the yoke iron plate, and the creepage distance between the two is short, which poses certain safety hazards. Utility Model Content

[0004] In view of the shortcomings of the background technology, the purpose of the utility model is to provide a circuit board fixing device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A circuit board fixing device comprises a coil frame and a cover body, wherein a pin seat is provided on the upper edge of the coil frame, a pin is inserted into the pin seat, and the pin is electrically connected to one end of the circuit board; and a limiting portion is provided on the side of the cover body facing the coil frame, and the limiting portion is used to limit the other end of the circuit board.

[0007] Furthermore, the limiting portion includes an extension portion, one side of the extension portion is connected to the cover body, and the outward side of the extension portion is provided with a protrusion extending along the axis of the cover body, and the space enclosed by the extension portion and the protrusion constitutes a limiting groove, and the other end of the circuit board is arranged in the limiting groove.

[0008] Furthermore, a yoke clamp is provided on one side of the cover body facing the coil frame.

[0009] Furthermore, a partition is provided on one side of the cover body facing the coil frame, and the partition is located between the limiting portion and the yoke clamp.

[0010] Furthermore, the lower edge of the partition is lower than the lower edge of the circuit board.

[0011] Furthermore, the partition includes a main partition, and secondary partitions are provided on both sides of the main partition. The space enclosed by the main partition and the secondary partition constitutes a receiving groove, and the circuit board is located in the receiving groove.

[0012] Furthermore, the cover body is provided with a notch for accommodating the circuit board leads.

[0013] A relay comprises a shell with an upward opening, and also comprises the circuit board fixing device as described above, wherein the coil frame is installed in the shell, a mounting groove is provided at the opening, and the cover body is connected to the mounting groove.

[0014] Furthermore, a yoke iron cylinder is provided at the bottom of the shell, and the yoke iron cylinder is provided with a first installation cavity opening upward, the coil frame is installed in the installation cavity, and a coil is provided outside the coil frame to constitute the magnetic circuit part of the relay.

[0015] Furthermore, a push rod is provided at the axis of the coil frame, and a spring is elastically connected to one end of the push rod facing the cover body.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model proposes a circuit board fixing device, including a coil frame and a cover body, the coil frame is provided with a pin seat, the pin seat is provided with a pin, the pin is electrically connected to one end of the circuit board, and the cover body is provided with a limiting portion on the side facing the coil frame, the limiting portion is used to limit the other end of the circuit board to prevent the circuit board from shaking.

[0018] 2. The utility model proposes a circuit board fixing device, in which a yoke clamp is provided on the side of the cover body facing the coil frame, and a partition is also provided on the side of the cover body facing the coil frame, and the partition is located between the limiting part and the yoke clamp, thereby increasing the creepage distance between the circuit board and the yoke clamp and preventing the circuit board from being punctured. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of a circuit board fixing device of the utility model;

[0021] Figure 2 This is an exploded view of a circuit board fixing device of the utility model;

[0022] Figure 3 for Figure 2 A partial enlarged view;

[0023] Figure 4 A top view of a relay of the utility model;

[0024] Figure 5 for Figure 4 Middle AA section view;

[0025] Figure 6 for Figure 4 Middle BB section view;

[0026] In the figure, 10, coil frame; 101, pin seat; 20, cover body; 201, limit part; 2011, extension part; 2012, protrusion; 2013, limit groove; 202, yoke iron clamp; 2031, main partition; 2032, secondary partition; 204, notch; 30, shell; 301, mounting groove; 40, yoke iron cylinder; 50, push rod; 60, mounting seat; 70, spring; 80, reed; 90, circuit board; 901, lead. DETAILED DESCRIPTION

[0027] Combine the following Figure 1-6 The utility model is described in detail.

[0028] The utility model proposes a circuit board fixing device, including a coil frame 10 and a cover body 20, the coil frame 10 is provided with a pin seat 101, the pin seat 101 is inserted with a pin, the pin is electrically connected to one end of the circuit board 90, and the cover body 20 is provided with a limiting portion 201 on the side facing the coil frame 10, the limiting portion 201 is used to limit the other end of the circuit board 90, so that the two ends of the circuit board 90 are in a fixed state to prevent the circuit board 90 from shaking.

[0029] In this embodiment, the limiting portion 201 includes an extension portion 2011, one end of the extension portion 2011 is connected to the cover body 20, and a protrusion 2012 is provided at the other end of the extension portion 2011 and on a side away from the axis of the cover body 20, and a space surrounded by the extension portion 2011 and the protrusion 2012 constitutes a limiting groove 2013, and the other end of the circuit board 90 is disposed in the limiting groove 2013. Specifically, when the other end of the circuit board 90 is disposed in the limiting groove 2013, the protrusion 2012 overlaps the outer side of the circuit board 90.

[0030] In this embodiment, a yoke iron clamp 202 is provided on the side of the cover body 20 facing the coil frame 10. Furthermore, a partition is also provided on the side of the cover body 20 facing the coil frame 10, and the partition is located between the limiting portion 201 and the yoke iron clamp 202. The cover body 20 is also provided with a notch 204 for accommodating the lead 901 of the circuit board 90, so as to facilitate the lead 901 to be led out of the relay, so as to connect other electrical equipment. Furthermore, the lower edge of the partition is lower than the lower edge of the circuit board 90, and the partition includes a main partition 2031, and secondary partitions 2032 are provided on both sides of the main partition 2031. The space enclosed by the main partition 2031 and the secondary partition 2032 constitutes a receiving groove, and the circuit board 90 is located in the receiving groove, thereby increasing the creepage distance between the circuit board 90 and the yoke iron clamp 202 to prevent the circuit board 90 from being broken down.

[0031] The utility model also provides a relay, including a housing 30 with an upward opening, and also includes the circuit board fixing device as described above, the coil frame 10 is installed in the housing 30, a mounting groove 301 is provided at the opening, and the cover body 20 is connected to the mounting groove 301.

[0032] In this embodiment, a yoke iron cylinder 40 is provided at the bottom of the housing 30. The yoke iron cylinder 40 is provided with a mounting cavity opening upward. The coil frame 10 is installed in the mounting cavity, and a coil is provided outside the coil frame 10 to form a magnetic circuit part of the relay.

[0033] In this embodiment, a push rod 50 is provided at the axis of the coil frame 10, and a spring 80 is elastically connected to one end of the push rod 50 facing the cover body 20. Specifically, a mounting seat 60 is provided at one end of the push rod 50 close to the cover body 20, and the mounting seat 60 is provided with a spring 70, and the end of the spring 70 is connected to the spring 80.

[0034] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable those skilled in the art to understand the content of the utility model and implement it, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A circuit board fixing device, characterized in that: It includes a coil frame and a cover body. The upper edge of the coil frame is provided with a pin seat, and the pin seat is inserted with a pin. The pin is electrically connected to one end of the circuit board. The cover body is provided with a limiting part on the side facing the coil frame, and the limiting part is used to limit the other end of the circuit board.

2. A circuit board fixing device as claimed in claim 1, characterized in that: The limiting portion includes an extension portion, one side of the extension portion is connected to the cover body, and the outward side of the extension portion is provided with a protrusion extending along the axis of the cover body. The space enclosed by the extension portion and the protrusion constitutes a limiting groove, and the other end of the circuit board is arranged in the limiting groove.

3. A circuit board fixing device as claimed in claim 2, characterized in that: A yoke iron clip is provided on one side of the cover body facing the coil frame.

4. A circuit board fixing device as claimed in claim 3, characterized in that: A partition is also provided on one side of the cover body facing the coil frame, and the partition is located between the limiting portion and the yoke clamp.

5. A circuit board fixing device as claimed in claim 4, characterized in that: The lower edge of the partition is lower than the lower edge of the circuit board.

6. A circuit board fixing device as claimed in claim 4 or 5, characterized in that: The partition includes a main partition, and secondary partitions are arranged on both sides of the main partition. The space enclosed by the main partition and the secondary partition constitutes a receiving groove, and the circuit board is located in the receiving groove.

7. A circuit board fixing device as claimed in claim 1, characterized in that: The cover body is provided with a notch for accommodating the circuit board leads.

8. A relay, comprising a housing having an upward opening, characterized in that: It also includes the circuit board fixing device according to any one of claims 1 to 7, wherein the coil frame is installed in the shell, a mounting groove is provided at the opening, and the cover body is connected to the mounting groove.

9. A relay as claimed in claim 8, characterized in that: A yoke iron cylinder is provided at the bottom of the shell, and the yoke iron cylinder is provided with an installation cavity opening upward, the coil frame is installed in the installation cavity, and a coil is provided outside the coil frame to form the magnetic circuit part of the relay.

10. A relay as claimed in claim 8, characterized in that: A push rod is provided at the axis of the coil frame, and a spring sheet is elastically connected to one end of the push rod facing the cover body.

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