CN213401023U

CN213401023U - Duplex switching DC relay

Info

Publication number: CN213401023U
Application number: CN202022562809.7U
Authority: CN
Inventors: 戴丁志; 闫玉峰; 戴孟仕; 戴心怡; 周树意
Original assignee: Ruian Smart Optoelectronics Co ltd
Current assignee: Ruian Smart Optoelectronics Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-06-08
Anticipated expiration: 2030-11-09
Also published as: WO2022095081A1

Abstract

The utility model discloses a pair conversion direct current relay, which comprises an outer shell, first terminal has on the shell body, second terminal and third terminal, still be provided with solenoid in the shell body, solenoid's middle part is provided with moves the iron core, it is provided with the movable contact piece to move the side on the iron core, first terminal connection is on the curved bridge that is the U font, second terminal connection is on first static contact piece, third terminal connection is on the second static contact piece, the one end of movable contact piece is located the curved bridge, the top of the movable contact piece other end is provided with first static contact piece, the below is provided with the second static contact piece, curved bridge and movable contact piece are along length direction parallel arrangement. By adopting the technical scheme, the width of the relay can be effectively reduced, the occupied space required by the installation of the relay is reduced, the assembling process of the relay is simpler, the cost is saved, and the production efficiency is improved.

Description

Duplex switching DC relay

Technical Field

The utility model relates to an electrical switching equipment, concretely relates to pair conversion direct current relay.

Background

The duplex switching direct current relay is a common relay on the market, the working principle of the relay is that an electromagnetic coil generates electromagnetic induction through accessed current to drive a movable iron core and a movable contact piece to move, the movable contact piece is driven to be connected with different static contact pieces through a bent bridge, and the conduction between different binding posts is realized to control the on-off of a circuit, as shown in figure 1, the movable contact piece 11 and the bent bridge 10 on the market are usually installed in the vertical direction, in order to cover the movable contact piece 11 and the bent bridge 10, the width of the whole relay shell is required to be designed to be larger, and the required installation space is larger.

In addition, traditional pair direct current relay need set up three binding post on its casing, three binding post need respectively with corresponding anodal or negative pole electricity connection, realize the inside inflow and the outflow of relay of electric current follow, wherein binding post needs to be connected with the inside wire electricity of relay, later the wire with electric current transfer to solenoid department, if the voltage of access is up to standard, then the magnetic force that solenoid produced just can drive the inside moving of relay, the output of static contact realization electric current, ensure the power consumption safety, the defect that this kind of structure exists is: when the wiring terminal is connected with the wire, the wire is an enameled wire, the enameled wire needs to be firstly depainted, and then the depainted part of the wire is welded on the wiring terminal, so that the processing operation is very troublesome, the process is complex, and the integral processing efficiency is poor.

Disclosure of Invention

In view of the not enough of background art, the utility model aims to solve the technical problem that a width that can effectively reduce the relay is provided, reduces the required occupation space of relay installation, makes the equipment process of relay simpler, practice thrift the cost simultaneously to improve its production efficiency's pair conversion direct current relay.

Therefore, the utility model discloses an adopt following scheme to realize:

duplex conversion direct current relay, including the shell body, first terminal, second terminal and third terminal have on the shell body, still be provided with solenoid in the shell body, solenoid's middle part is provided with moves the iron core, the top of moving the iron core is provided with the movable contact piece, first terminal connection is on the curved bridge that is the U font, second terminal connection is on first static contact piece, third terminal connection is on the second static contact piece, the one end of movable contact piece is located in the curved bridge, the top of movable contact piece other end is provided with first static contact piece, and the below is provided with second static contact piece, its characterized in that: the bent bridge and the movable contact piece are arranged in parallel along the length direction.

Two groups of the first binding post, the electromagnetic coil, the movable iron core, the movable contact piece and the bent bridge are arranged left and right.

And a push rod is arranged above the movable iron core, the push rod is matched and pressed with a reset spring, and the push rod is connected with the movable contact spring.

The shell body comprises an upper shell cover and a lower shell cover, wherein a recessed part is arranged at the corner of the upper shell cover, an installation step is formed at the bottom end of the recessed part, a through hole for a screw to pass through is formed in the installation step, and a threaded hole is formed in the corresponding position of the lower shell cover and the through hole.

The wire breaking device is characterized by further comprising two wiring terminals, one ends of the wiring terminals are located outside the outer shell, the other ends of the wiring terminals are located inside the outer shell and are electrically connected with a wire inside the outer shell, the wire is electrically connected with an electromagnetic coil inside the outer shell, a wire breaking terminal is arranged inside the outer shell, one end of the wire breaking terminal is penetrated into the wire and is electrically connected with the wire, and the other end of the wire breaking terminal is electrically connected with one of the wiring terminals.

The wire breaking terminal is electrically connected with one end of the conducting strip, and the other end of the conducting strip is riveted on the first static contact or the second static contact.

The lower shell cover is provided with a groove in a surrounding mode at a position close to the outer edge of the lower shell cover, a sealing ring is arranged in the groove, and the sealing ring is tightly pressed between the upper shell cover and the lower shell cover.

Adopt above-mentioned technical scheme, the utility model discloses an advantage does: 1. the bent bridge and the movable contact spring are arranged in parallel along the length direction, so that the whole width of the relay is reduced, the occupied space for installing the relay is effectively reduced, and the relay is convenient to install; 2. set up the depressed part through the edge at last cap for connecting portion are closer between the upper and lower cap, and then guarantee the stability and the reliability of connecting between the fastener, and the sealing washer of product is pressed the pressure between upper cap and upper cap bigger, more reliable stable, guarantees that the sealing performance of product is better, and product protection level is higher. 3. The electric connection of the wire and the binding post is realized by arranging the wire breaking terminal, so that one of the positive electrodes or the negative electrodes can be connected through the binding post, the connection mode is simpler, the number of the binding posts is effectively reduced, the whole processing operation is simpler, and the production efficiency of the relay is effectively improved. 4. Because the conducting strip and the static contact are connected by adopting a riveting process, compared with the prior process of contacting by a spring or directly welding on the static contact, the connection is not unstable because the contact is not oxidized by high temperature when the static contact is electrified and heated; the contact point can not be unstable due to vibration of the spring or the welding point when the contact point is subjected to vibration in the relay vibration environment, and the vibration resistance of the product is improved.

Drawings

The utility model discloses there is following figure:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a structural diagram of the lower case cover of the present invention;

FIG. 3 is a view of the present invention with the upper housing cover removed;

FIG. 4 is the view of FIG. 3 with the cover removed;

fig. 5 is a cross-sectional view of the present invention;

fig. 6 is an internal structural view of a conventional duplex dc relay.

Detailed Description

As shown in the figure, the utility model discloses a pair conversion direct current relay, which comprises an outer shell, first terminal 6 has on the shell body, second terminal 7 and third terminal 8, still be provided with solenoid 19 in the shell body, solenoid 19's middle part is provided with moves iron core 18, the top of moving iron core 18 is provided with movable contact piece 11, first terminal 6 is connected on the curved bridge 10 that is the U font, second terminal 7 is connected on first static contact piece 13, third terminal 8 is connected on second static contact piece 15, the one end of movable contact piece 11 is located curved bridge 10, the top of the movable contact piece 11 other end is provided with first static contact piece 13, the below is provided with second static contact piece 15, curved bridge 10 and movable contact piece 11 are along length direction parallel arrangement. The first terminal 6, the electromagnetic coil 19, the movable iron core 18, the movable contact 11 and the bent bridge 10 are arranged in two groups from left to right. A push rod 17 is arranged above the movable iron core 18, the push rod 17 is matched and pressed with the reset spring 12, and the push rod 17 is connected with the movable contact piece 11 to conveniently drive the movable contact piece 11 to reset. The shell body includes upper shell cover 5 and lower shell cover 3, and the edge of upper shell cover 5 has depressed part 1, forms installation step 2 in the bottom of depressed part 1, is provided with the through-hole that supplies the screw to pass on installation step 2, and lower shell cover 3 is in the department of corresponding with the through-hole set up threaded hole 9. The wire-breaking device is characterized by further comprising two wire connecting terminals 4, one ends of the wire connecting terminals 4 are located outside the outer shell, the other ends of the wire connecting terminals 4 are located inside the outer shell and are electrically connected with a wire inside the outer shell, the wire is electrically connected with an electromagnetic coil 19 inside the outer shell, wire-breaking terminals 16 are arranged inside the outer shell, one ends of the wire-breaking terminals 16 penetrate into the wire and are electrically connected with the wire, and the other ends of the wire-breaking terminals 16 are electrically connected with one of the. The broken terminal 16 is electrically connected to one end of the conductive plate 14, and the other end of the conductive plate 14 is riveted to the first static contact 13 or the second static contact 15. The lower shell cover 3 is provided with a groove 20 at a position close to the outer edge of the lower shell cover in a surrounding manner, a sealing ring 21 is arranged in the groove 20, and the sealing ring 21 is compressed between the upper shell cover 5 and the lower shell cover 3 to ensure the tightness after the two are compressed and matched.

By adopting the technical scheme, the bent bridge 10 and the movable contact spring 11 are arranged in parallel along the length direction, so that the whole width of the relay is reduced, the occupied space for installing the relay is effectively reduced, and the relay is convenient to install; the concave parts 1 are arranged at the corners of the upper shell cover 5, so that the connecting parts between the upper shell cover and the lower shell cover are closer, and the stability and the reliability of the connection between the fastening pieces are further ensured; the electric connection between the lead and the binding post is realized by arranging the broken terminal 16, so that the current of one of the positive electrodes or the negative electrodes can be connected through the binding post, the number of the wiring terminals 4 is effectively reduced, the access mode is changed, the connection mode is simpler, the integral processing operation is simpler, the production efficiency of the relay is effectively improved, and the connection is unstable because the conducting strip and the static contact are connected by adopting a riveting process, compared with the prior process of contacting with a spring or directly welding on the static contact, the contact cannot be oxidized at high temperature when the static contact is electrified and heated; the contact point can not be unstable due to vibration of the spring or the welding point when the contact point is subjected to vibration in the relay vibration environment, and the vibration resistance of the product is improved.

Claims

1. Duplex switching direct current relay, including the shell body, first terminal (6), second terminal (7) and third terminal (8) have on the shell body, still be provided with solenoid (19) in the shell body, the middle part of solenoid (19) is provided with moves iron core (18), the top of moving iron core (18) is provided with movable contact spring (11), first terminal (6) are connected on curved bridge (10) that is the U font, second terminal (7) are connected on first static contact (13), third terminal (8) are connected on second static contact (15), the one end of movable contact spring (11) is located in curved bridge (10), the top of movable contact spring (11) other end is provided with first static contact (13), and the below is provided with second static contact (15), its characterized in that: the bent bridge (10) and the movable contact piece (11) are arranged in parallel along the length direction.

2. The double conversion direct current relay according to claim 1, wherein the first terminal (6), the electromagnetic coil (19), the movable iron core (18), the movable contact piece (11) and the bent bridge (10) are arranged in two groups on the left and right.

3. The duplex converting direct current relay as claimed in claim 1, wherein a push rod (17) is arranged above the movable iron core (18), the push rod (17) is matched and pressed with a return spring (12), and the push rod (17) is connected with the movable contact piece (11).

4. The duplex-conversion direct-current relay according to claim 1, wherein the outer housing comprises an upper housing cover (5) and a lower housing cover (3), a recessed portion (1) is formed at a corner of the upper housing cover (5), a mounting step (2) is formed at a bottom end of the recessed portion (1), a through hole for a screw to pass through is formed in the mounting step (2), and a threaded hole (9) is formed in a position, corresponding to the through hole, of the lower housing cover (3).

5. The double conversion direct current relay according to claim 1, further comprising two connection terminals (4), wherein one end of each connection terminal (4) is located outside the outer housing, the other end of each connection terminal is located inside the outer housing and electrically connected with a wire inside the outer housing, the wire is electrically connected with an electromagnetic coil (19) inside the outer housing, a wire breaking terminal (16) is arranged inside the outer housing, one end of the wire breaking terminal (16) penetrates into the wire and is electrically connected with the wire, and the other end of the wire breaking terminal (16) is electrically connected with one of the connection terminals.

6. The dual conversion DC relay according to claim 5, wherein the wire breaking terminal (16) is electrically connected with one end of a conductive plate (14), and the other end of the conductive plate (14) is riveted on the first static contact (13) or the second static contact (15).

7. A double conversion DC relay according to claim 4, characterized in that the lower housing cover (3) is provided with a groove (20) around it near its outer edge, a sealing ring (21) being provided in the groove (20), the sealing ring (21) being compressed between the upper housing cover (5) and the lower housing cover (3).