CN214336660U

CN214336660U - Connection structure and relay of coil lead pin and signal input terminal pin

Info

Publication number: CN214336660U
Application number: CN202120729231.1U
Authority: CN
Inventors: 谢树华
Original assignee: Shanghai Kefa Precision Alloy Material Co ltd
Current assignee: Shanghai Kefa Precision Alloy Material Co ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2021-10-01
Anticipated expiration: 2031-04-09

Abstract

The utility model relates to a connection structure and relay of coil pin and signal input terminal foot, it includes coil pin and signal input terminal foot, the one end that signal input terminal foot is close to the coil pin is equipped with the parallel cantilever front end that two intervals set up, parallel cantilever front end is mutually perpendicular with signal input terminal foot, the coil pin includes mutually perpendicular and tip fixed connection's end foot linkage segment and coil linkage segment, the one end that coil linkage segment was kept away from to the end foot linkage segment is equipped with the flat section that the joint was fixed between two parallel cantilever front ends, the lateral wall of flat section includes two lateral wall planes that are parallel to each other, lateral wall plane and the one side looks butt that two parallel cantilever front ends are close to each other. The present application has the following effects: the area of contact increase of wall plane and parallel cantilever front end, and after the mutual butt, the platykurtic is difficult to take place to rotate, and parallel cantilever is better to the spacing effect of platykurtic, and consequently the platykurtic makes the fixed connection between coil pin and the signal input terminal foot more stable.

Description

Connection structure and relay of coil lead pin and signal input terminal pin

Technical Field

The application relates to the technical field of electrical components, in particular to a connecting structure of a coil terminal pin and a signal input terminal pin and a relay.

Background

A relay is an electric control device that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount (excitation amount) meets a predetermined requirement. Relays are generally used in automatic control circuits, and are actually an "automatic switch" that uses a small current to control a large current to operate, so that the relays play roles of automatic regulation, safety protection, circuit switching and the like in the circuits.

The relay functions by applying an electrical signal to the coil assembly to change the on or off state of the relay output circuit, so that the signal input terminal pin of the relay needs to be electrically connected with the coil assembly of the relay to complete the transmission of the electrical signal. Chinese utility model patent No. CN203386668U discloses a connection structure of a coil terminal pin and a signal input terminal pin, which includes a coil terminal pin led out from a coil and a signal input terminal pin for receiving an electric signal, the coil terminal pin is columnar; the end part of the signal input terminal pin is provided with two parallel cantilevers with tail ends connected into a whole; the peripheral dimension of the columnar coil terminal pin is slightly larger than the gap between the front ends of the two parallel suspension arms at the end part of the signal input terminal pin, and the columnar coil terminal pin is extruded into the gap between the front ends of the two parallel suspension arms to form interference clamping fit.

In view of the above-mentioned related technologies, the inventor believes that the coil terminal pin is simply fixed to the front end of the parallel cantilever in a clamping manner, and when the relay is vibrated, the coil terminal pin is easily separated from the front end of the parallel cantilever, so that the relay is easily disabled, and the phenomenon of 'striking fire' is generated, so that a fire disaster occurs.

SUMMERY OF THE UTILITY MODEL

In order to strengthen the effect of fixed connection between coil terminal pin and the signal input terminal pin, this application provides a connection structure and relay of coil terminal pin and signal input terminal pin.

The application provides a connection structure and relay of coil terminal pin and signal input terminal pin adopts following technical scheme:

in a first aspect, the present application provides a connection structure of a coil terminal pin and a signal input terminal pin, which adopts the following technical scheme:

the utility model provides a connection structure of coil pin and signal input terminal foot, includes coil pin and signal input terminal foot, the one end that signal input terminal foot is close to the coil pin is equipped with the parallel cantilever front end that two intervals set up, parallel cantilever front end is mutually perpendicular with signal input terminal foot, the coil pin includes mutually perpendicular and tip fixed connection's end foot linkage segment and coil linkage segment, the one end that coil linkage segment was kept away from to the end foot linkage segment is equipped with the flat section that the joint was fixed between two parallel cantilever front ends, the lateral wall of flat section includes two lateral wall planes that are parallel to each other, lateral wall plane and the one side looks butt that two parallel cantilever front ends are close to each other.

Through adopting above-mentioned technical scheme, the area of contact increase of lateral wall plane and parallel cantilever front end, and after the mutual butt, the flat section is difficult to take place to rotate, and parallel cantilever is better to the spacing effect of flat section, and consequently the flat section makes the fixed connection between coil pin and the signal input terminal pin more stable, even when the relay receives vibrations, the coil pin also be difficult to with the signal input terminal pin between produce the separation.

Optionally, the flat section is provided with a limiting protrusion, and the limiting protrusion is located at two ends of the front end of the parallel cantilever along the axial lead direction of the end pin connecting section.

Through adopting above-mentioned technical scheme, spacing arch is used for fixed the carrying on spacingly to the joint of platypellus between two parallel cantilever front ends to make the platypellus be difficult for taking place the drunkenness along the axial lead direction of end foot linkage segment, thereby further improve coil lead pin and signal input end foot between fixed connection's effect.

Optionally, the flat section and the end foot connecting section are arranged in parallel and in a staggered mode, the flat section and the end foot connecting section are located in the same plane, and a steering section is arranged between the flat section and the end foot connecting section.

Through adopting above-mentioned technical scheme, when the coil pin is fixed in the relay, can all fix end pin linkage segment in the joint structure of relay with turning to the section to make the coil pin more firm in the relay.

Optionally, a silver plating layer is arranged outside the coil terminal pin.

By adopting the technical scheme, the electric conductivity, the heat conductivity, the corrosion resistance, the high-temperature oxidation resistance and other capabilities of the coil terminal pin are enhanced, and the service life of the coil terminal pin can be prolonged.

In a second aspect, the present application provides a relay, which adopts the following technical solution:

a relay comprises a connecting structure of two coil terminal pins and signal input terminal pins, and also comprises a base, a protective cover casing enclosing with the base to form a closed structure, a contact arranged at one side of the base close to the interior of the protective cover casing, an elastic reed positioned at one side of the contact far away from the base, coil components clamped and fixed at two ends of the length direction of the base and positioned in the interior of the protective cover casing, and a coil component fixed between the two coil components, wherein a coil connecting section of one coil terminal pin is electrically connected with an input end of the coil component, a coil connecting section of the other coil terminal pin is electrically connected with an input end of the coil component, one ends of the two signal input terminal pins far away from the coil terminal pins are all arranged on the base in a penetrating way, one side of the base far away from the contact is provided with two signal output terminal pins, one of the signal output terminal pins is electrically connected with the contact, and the other signal output terminal pin is electrically connected with the elastic reed.

By adopting the technical scheme, when the signal input terminal pin inputs an electric signal, the electric signal can reach the coil assembly through the coil lead pin so that the coil assembly is electrified to generate electromagnetic induction, and the elastic reed is abutted against the contact under the action of magnetic force so as to achieve the aim of controlling the output circuit by the input circuit of the relay.

Optionally, the end foot connecting section and the steering section are both arranged on the wire bag assembly in a penetrating mode.

Through adopting above-mentioned technical scheme for the difficult drunkenness that takes place on the package subassembly of coil pin, thereby it is more firm to make the installation of coil pin in the relay.

Optionally, the base is provided with a power potting adhesive at the penetrating positions of the signal output terminal pin and the signal input terminal pin and the connecting position of the base and the protective housing.

Through adopting above-mentioned technical scheme, the power potting glue is used for strengthening the sealed effect that base and protective housing enclose the enclosed construction who closes formation to make each components and parts in the enclosed construction difficult for the oxidation, thereby so that the life of relay can prolong.

Optionally, an inert gas is provided in a closed structure formed by enclosing the base and the protective cover.

Through adopting above-mentioned technical scheme, inert gas is used for each components and parts in the protection enclosed construction to make the relay more durable.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the contact area between the plane of the side wall and the front end of the parallel cantilever is increased, the flat section is difficult to rotate after the side wall plane and the front end of the parallel cantilever are mutually abutted, and the limiting effect of the parallel cantilever on the flat section is better, so that the flat section enables the fixed connection between the coil lead pin and the signal input terminal pin to be more stable;

2. the service life of the coil terminal pin is prolonged by arranging the silver plating layer.

Drawings

FIG. 1 is a schematic structural view of the whole connection structure of the embodiment of the present application;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic structural diagram of the whole relay according to the embodiment of the present application;

fig. 4 is an exploded view of a relay according to an embodiment of the present application.

Description of reference numerals: 1. a coil terminal pin; 11. a terminal pin connecting section; 12. a coil connection section; 13. a flattened section; 131. a limiting bulge; 14. a turning section; 2. a signal input terminal pin; 21. chamfering; 22. a parallel cantilever front end; 3. a signal output terminal pin; 4. a base; 41. a card slot; 42. power source pouring sealant; 5. a protective housing; 51. air holes; 52. sealing the plug; 6. a contact; 7. an elastic reed; 8. a coil assembly; 81. a latch; 9. a coil assembly.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses connection structure of coil terminal pin and signal input terminal pin. Referring to fig. 1, the connection structure includes a coil terminal pin 1 and a signal input terminal pin 2.

The signal input terminal pin 2 and the coil terminal pin 1 are used for connecting an electric signal into and out of the coil assembly 9 of the relay, so that an input loop is formed between the coil assembly 9 and an input power supply, and the on-off of an output loop of the relay can be controlled by the input loop. Therefore, two groups of connecting structures of the coil terminal pins and the signal input terminal pins in the relay are arranged, one group of connecting structures is electrically connected with the input end of the coil assembly 9, and the other group of connecting structures is electrically connected with the output end of the coil assembly 9.

Referring to fig. 1 and 2, one end of the signal input terminal pin 2, which is far away from the coil terminal pin 1, is provided with a chamfer 21, so that the connection of the signal input terminal pin 2 with an input power supply is more convenient. The end of the signal input terminal pin 2 near the coil terminal pin 1 is provided with a parallel cantilever front end 22. The parallel cantilever front ends 22 and the signal input terminal pins 2 are of an integral structure, two parallel cantilever front ends 22 are arranged at intervals, and the two parallel cantilever front ends 22 are perpendicular to the signal input terminal pins 2. The front end 22 of the parallel cantilever is used for clamping and fixing the coil terminal pin 1.

The coil terminal pin 1 may be made of a copper material. The coil terminal pin 1 includes a terminal pin connection section 11 and a coil connection section 12 both in the shape of a circular rod. The terminal pin connecting section 11 and the coil connecting section 12 are perpendicular to each other, and the ends of the terminal pin connecting section 11 and the coil connecting section 12 are fixedly connected. The coil connecting segment 12 is used for electrically connecting the coil terminal pin 1 with the coil of the coil assembly 9.

The end of the terminal pin connecting section 11 far away from the coil connecting section 12 is fixedly connected with a flat section 13. The flattened section 13 is obtained by flattening a round bar, and the flattened section 13 comprises two mutually parallel side wall planes. The flat section 13 is used for electrically connecting the coil terminal pin 1 with the signal input terminal pin 2. The flat section 13 is clamped and fixed between the front ends 22 of the two parallel suspension arms, and the side wall plane of the flat section 13 is abutted against one side of the front ends of the two parallel side walls, which are close to each other. An interference fit may be used between the flattened section 13 and the two parallel cantilevered forward ends 22. The contact area increase of lateral wall plane and parallel cantilever front end 22, and the back of butt each other, flat section 13 is difficult to take place to rotate, and parallel cantilever is better to flat section 13's spacing effect, and consequently flat section 13 makes the fixed connection between coil pin 1 and the signal input terminal pin 2 more stable, even when the relay receives vibrations, coil pin 1 also is difficult to and produces the separation between the signal input terminal pin 2.

The flat section 13 is provided with a stop lug 131. The limiting protrusions 131 are located at two ends of the front end 22 of the parallel cantilever along the axial lead direction of the end pin connecting section 11, and the limiting protrusions 131 are formed by the flat section 13 protruding along the thickness direction of the flat section 13. The limiting protrusion 131 is used for limiting the clamping and fixing of the flat section 13 between the two parallel cantilever front ends 22, so that the flat section 13 is not easy to move along the axial lead direction of the terminal pin connecting section 11, and the effect of fixing and connecting the coil terminal pin 1 and the signal input terminal pin 2 is further improved.

The flat section 13 and the terminal pin connecting section 11 are arranged in parallel and in a staggered mode, and the flat section 13 and the terminal pin connecting section 11 are located in the same plane. A turning section 14 is arranged between the flat section 13 and the end pin connecting section 11, and the extending direction of the turning section 14 is opposite to the extending direction of the coil connecting section 12. The coil connecting section 12, the terminal pin connecting section 11, the steering section 14 and the flat section 13 are all of an integral structure, namely, the coil connecting section, the terminal pin connecting section, the steering section 14 and the flat section 13 are formed by bending the same round rod for multiple times. When coil pin 1 is fixed in the relay, can all fix end pin linkage segment 11 and turn to section 14 in the joint structure of relay to make the installation of coil pin 1 in the relay more firm.

The outside of the coil terminal pin 1 is provided with a silver plating layer. The silver plating layer can reduce the contact resistance of the metal surface, has high chemical stability and is easy to polish, so that the silver plating layer can enhance the electric conductivity, the thermal conductivity, the corrosion resistance, the high-temperature oxidation resistance and other capabilities of the coil terminal pin 1, and can prolong the service life of the coil terminal pin 1.

The implementation principle of the connection structure of the coil terminal pin and the signal input terminal pin in the embodiment of the application is as follows: during processing, one end of the straight copper round bar is vertically bent to enable the coil connecting section 12 to be processed and formed, then one end, far away from the coil connecting section 12, of the copper round bar is continuously bent twice, and the front section and the rear section after bending are parallel to each other and located in the same plane. And then flattening one end of the copper round bar, which is far away from the coil connecting section 12, so as to form a terminal pin connecting section 11, a turning section 14 and a flat section 13 respectively. Then, the limiting protrusion 131 is formed on the flat section 13, and the coil terminal pin 1 is subjected to silver plating to form a silver plated layer. The signal input terminal pin 2 is then shaped and a parallel cantilever front end 22 is arranged on the signal input terminal pin 2. And then the flat section 13 is clamped and fixed between the front ends 22 of the two parallel cantilever arms to form a connecting structure.

The embodiment of the application also discloses a relay. Referring to fig. 3 and 4, the relay includes a signal input terminal pin 2, a signal output terminal pin 3, a base 4, a protective cover 5, a contact 6, an elastic reed 7, a coil assembly 8, and a coil assembly 9.

The protective cover 5 is a rectangular parallelepiped housing, and one end of the protective cover 5 is open and the other end is closed. The protective housing 5 is fixedly connected with the base 4, the base 4 is arranged at the closed end of the protective housing 5, and the base 4 and the protective housing 5 are enclosed to form a closed structure. The contact 6 is fixed to the side of the base 4 adjacent the interior of the closed housing. The elastic reed 7 is a metal sheet body capable of generating elastic deformation, the elastic reed 7 is fixed on the base 4, and the elastic reed 7 is positioned on one side of the contact 6 far away from the base 4. One side of the base 4 far away from the contact 6 is fixed with two signal output terminal pins 3, and the signal output terminal pins 3 are arranged on the base 4 in a penetrating way. One of the signal output terminal pins 3 is electrically connected to the contact 6, and the other signal output terminal pin 3 is electrically connected to the spring reed 7. The two signal output terminal pins 3, the contact 6, the elastic reed 7 and the output power supply jointly form an output loop of the relay.

The solenoid assembly 8 is clamped and fixed at two ends of the base 4 in the length direction, and the solenoid assembly 8 is positioned inside the protective housing 5. The coil component 8 is provided with a clamping tongue 81 for clamping and fixing with the base 4, and the base 4 is provided with a clamping groove 41 for clamping and connecting the coil component 8. The coil assembly 9 is secured between the two coil assemblies 8. The end pin connecting section 11 and the steering section 14 are all arranged on the wire wrapping component 8 in a penetrating mode, so that the coil terminal pin 1 is not prone to shifting on the wire wrapping component 8, and the coil terminal pin 1 is stable. The coil connecting segment 12 of one coil terminal pin 1 is electrically connected with the input end of the coil assembly 9, the coil connecting segment 12 of the other coil terminal pin 1 is electrically connected with the input end of the coil assembly 9, and one end of the signal input terminal pin 2, which is far away from the coil terminal pin 1, is arranged on the base 4 in a penetrating mode. The two signal input terminal pins 2, the two coil terminal pins 1, the coil assembly 9 and an input power supply jointly form an input circuit of the relay.

When the signal input terminal pin 2 inputs an electric signal, the electric signal can reach the coil assembly 9 through the coil terminal pin 1, so that the coil assembly 9 is electrified to generate electromagnetic induction. The elastic reed 7 is abutted with the contact 6 under the action of magnetic force, so that the output circuit of the relay can be connected. After the electric signal of the signal input end is disconnected, the battery induction of the coil assembly 9 disappears, and the elastic reed 7 is reset, so that the output circuit of the relay can be disconnected.

The base 4 is provided with power source pouring sealant 42 at the penetrating positions of the signal input terminal pin 2 and the signal output terminal pin 3 and the connecting position of the base and the protective housing 5. The power source pouring sealant 42 is used for enhancing the sealing effect of the closed structure formed by enclosing the base 4 and the protective cover 5, so that each component in the closed structure is not easy to be oxidized, and the service life of the relay is prolonged.

The closed structure formed by enclosing the base 4 and the protective cover 5 is filled with inert gas. During processing, the closed end of the protective cover 5 is provided with two air holes 51, and the two air holes 51 are arranged along the diagonal line of the closed end of the protective cover. One of the air holes 51 is used for introducing inert gas into the closed structure, and the other air hole 51 is used for exhausting air in the closed structure. After filling, the protective casing 5 is fixedly connected with a sealing plug 52 at the air hole 51 to prevent the inert gas in the closed structure from overflowing. The inert gas is used to protect the components within the enclosed structure so that the relay is more durable.

The implementation principle of the relay in the embodiment of the application is as follows: during processing, the two signal output terminal pins 3 are firstly arranged on the base 4 in a penetrating way, then the contact 6 and the elastic reed 7 are fixed on the base 4, the contact 6 is electrically connected with one signal output terminal pin 3, and the elastic reed 7 is electrically connected with the other signal output terminal pin 3. The coil assembly 9 is fixed on the base 4 through the wire bag assembly 8. The coil terminal pin 1 is then inserted through the wire package assembly 8 and the signal input terminal pin 2 is inserted through the base 4. One coil terminal pin 1 is electrically connected to the input end of the coil assembly 9, and the other coil terminal pin 1 is electrically connected to the output end of the coil assembly 9. The protective casing 5 is then fixedly connected to the base 4 such that the protective casing 5 and the base 4 enclose a closed structure. Then, power source pouring sealant 42 is arranged at the connection positions of the signal input terminal pin 2 and the signal output terminal pin 3 on the base 4 and the housing. An inert gas is introduced into the closed structure through one of the gas holes 51, and the air in the closed structure is discharged through the other gas hole 51. The sealing plug 52 is then fixed to the protective casing 5 at the air hole 51.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a connection structure of coil pin and signal input terminal foot, includes coil pin (1) and signal input terminal foot (2), the one end that signal input terminal foot (2) are close to coil pin (1) is equipped with parallel cantilever front end (22) that two intervals set up, parallel cantilever front end (22) are mutually perpendicular with signal input terminal foot (2), coil pin (1) are including mutually perpendicular and tip fixed connection's end foot linkage segment (11) and coil linkage segment (12), its characterized in that: the one end that coil linkage segment (12) were kept away from in end foot linkage segment (11) is equipped with flat section (13) that the joint was fixed between two parallel cantilever front ends (22), the lateral wall of flat section (13) includes two lateral wall planes that are parallel to each other, lateral wall plane and two parallel cantilever front ends (22) one side looks butt that are close to each other.

2. The connecting structure of a coil terminal pin to a signal input terminal pin according to claim 1, wherein: the flat section (13) is provided with a limiting bulge (131), and the limiting bulge (131) is positioned at two ends of the front end (22) of the parallel cantilever along the axial lead direction of the end pin connecting section (11).

3. The connecting structure of a coil terminal pin to a signal input terminal pin according to claim 1, wherein: the flat section (13) and the end foot connecting section (11) are arranged in a parallel and staggered mode, the flat section (13) and the end foot connecting section (11) are located on the same plane, and a steering section (14) is arranged between the flat section (13) and the end foot connecting section (11).

4. The connecting structure of a coil terminal pin to a signal input terminal pin according to claim 1, wherein: and a silver plating layer is arranged outside the coil terminal pin (1).

5. A relay comprising two coil terminal pins according to any one of claims 1 to 4 and a connection structure of the signal input terminal pins, wherein: the coil assembly is characterized by further comprising a base (4), a protective cover shell (5) which is enclosed with the base (4) to form a closed structure, a contact (6) which is arranged on one side of the base (4) close to the interior of the protective cover shell (5), an elastic reed (7) which is arranged on one side of the contact (6) far away from the base (4), coil assemblies (8) which are clamped and fixed at two ends of the length direction of the base (4) and are arranged in the protective cover shell (5) and a coil assembly (9) which is fixed between the two coil assemblies (8), a coil connecting section (12) of one coil lead pin (1) is electrically connected with the input end of the coil assembly (9), a coil connecting section (12) of the other coil lead pin (1) is electrically connected with the input end of the coil assembly (9), one ends, far away from the coil lead pins (1), of the two signal input end pins (2) are arranged on the base (4) in a penetrating manner, and one side, far away from the contact (6), of the base (4) is provided with two signal output end pins (3), one of the signal output terminal pins (3) is electrically connected with the contact (6), and the other signal output terminal pin (3) is electrically connected with the elastic reed (7).

6. The relay according to claim 5, characterized in that: the end foot connecting section (11) and the turning section (14) are arranged on the wire bag component (8) in a penetrating mode.

7. The relay according to claim 5, characterized in that: the base (4) is provided with power source pouring sealant (42) at the penetrating positions of the signal output terminal pin (3) and the signal input terminal pin (2) and the connecting position of the base (4) and the protective housing (5).

8. The relay according to claim 7, wherein: and inert gas is arranged in a closed structure formed by enclosing the base (4) and the protective cover shell (5).