CN111613486B

CN111613486B - Direct-acting DC relay

Info

Publication number: CN111613486B
Application number: CN202010468308.4A
Authority: CN
Inventors: 李骏; 周晓峰; 贾红军; 袁天伟; 其他发明人请求不公开姓名
Original assignee: Ningbo Fengmei New Energy Automobile Technology Co ltd
Current assignee: Ningbo Fengmei New ENERGY AUTOMOTIVE Technology Co.,Ltd.
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2022-10-21
Anticipated expiration: 2040-05-28
Also published as: CN111613486A

Abstract

The invention discloses a direct-acting direct-current relay, which comprises a shell, a partition plate arranged in the shell and a pushing mechanism penetrating through the partition plate, wherein the pushing mechanism comprises a pushing rod, a spring sleeved on the pushing rod and a movable reed arranged at the top end of the pushing rod, an insulating block is arranged on the partition plate, a groove for accommodating the spring is formed in the insulating block, a first positioning block is arranged at the middle end of the pushing rod, a second positioning block is arranged at the top end of the pushing rod, the first positioning block is arranged in the groove, and an insulating sleeve is arranged outside the second positioning block. According to the invention, the first positioning block and the second positioning block are arranged and are limited and fixed through the insulating block and the insulating sleeve, so that the stability of the product in the action process is enhanced and the phenomenon of locking caused by insufficient clearance is avoided; the insulating block effectively prevents foreign matters in the relay from entering the movable iron core, and the clamping phenomenon of the relay is effectively improved.

Description

Direct-acting DC relay

Technical Field

The invention relates to the field of relays, in particular to a direct-acting direct-current relay.

Background

The direct-acting relay in the prior art generally adopts a direct-acting magnetic circuit structure, is arranged upwards by two load terminals and is connected with a movable spring piece in a bridge manner, and the bridge-type movable spring piece enables a contact to be contacted or separated under the driving of the direct-acting magnetic circuit structure. The direct acting relay of this structure generally includes a contact portion including two stationary contacts and a movable assembly including a movable spring portion and a push portion, and a magnetic circuit portion. The movable spring part and the solenoid type cylindrical iron core form a pushing part through a pushing mechanism, the movable spring is pushed to move up and down, so that the movable assembly forms a linear motion, and the motion mode is called as a direct-acting type.

The traditional iron core adopts a solenoid type cylindrical iron core, and actually, in the production process, the absolute roundness of the iron core and a magnetic conduction lining can not be in an ideal state, so that a certain point of the magnetic field intensity at any position around the movable iron core is not completely uniform in the movement process of the movable assembly, the movable iron core is inclined, and the movable iron core and a fixed contact deviate when in contact, so that the stability of the performance of a relay is influenced.

In order to prevent the deflection of the movable component, the movable component is indirectly limited by a gap through a side wall of the housing, however, the limit mode is to correct the deflection after the deflection occurs in the pushing movement process, which easily causes the instability of the relay in the movement process and causes the phenomenon of several times of attraction. When the gap is too large, the magnetic conductive component cannot play a good limiting role, and when the gap is too small, the phenomenon that the movable component is blocked is easily caused, and the magnetic conductive product directly fails.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the direct-acting direct-current relay is characterized in that two positioning blocks are arranged on a push rod to limit the push rod and prevent the push rod from deviating by limiting the push rod according to the principle that two points limit one straight line.

The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a direct action type direct current relay, includes the shell, sets up the baffle in the shell and runs through the pushing mechanism who sets up on the baffle, pushing mechanism includes catch bar, cover and locates the spring on the catch bar and set up the movable contact spring on the catch bar top, be equipped with an insulating block on the baffle, be equipped with a recess that holds the spring in the insulating block, the catch bar middle end is equipped with first locating piece, and the top is equipped with the second locating piece, first locating piece is arranged in the recess, the second locating piece is equipped with an insulating cover outward.

Compared with the prior art, the invention has the advantages that: the first positioning block and the second positioning block are arranged and are limited and fixed through the insulating block and the insulating sleeve, so that the stability of a product in the action process is enhanced, and the phenomenon of locking caused by insufficient gaps is avoided; the insulating block effectively prevents foreign matters (splashes generated between contacts in the action process of the relay) in the relay from entering the movable iron core, and the blocking phenomenon of the relay is effectively improved.

Preferably, the insulating sleeve comprises an extension part, and the extension part extends into the movable spring plate to abut against the side edge of the push rod. Like this, can keep apart movable contact spring and catch bar through the extension, prevent that the electric arc on the movable contact spring from touchhing the catch bar, lead to high-low voltage insulation to descend, influence the life-span of relay.

Preferably, one end of the spring abuts against the first positioning block, and the other end of the spring abuts against the movable spring piece. Like this, the spring can be fine spacing inside the collets, and the butt is fixed from top to bottom, prevents its removal.

Preferably, a plurality of first insulation bumps are arranged in the insulation block, and the insulation block abuts against and fixes the first positioning block through the first insulation bumps. Like this, can carry on spacingly to the interlude position of catch bar through first insulating lug, prevent that it from controlling and rocking.

Preferably, a plurality of second insulating bumps are arranged in the insulating sleeve, and the insulating sleeve is abutted and fixed with the second positioning block through the second insulating bumps. Like this, can carry on spacingly to the top position of catch bar through the insulating lug of second, prevent that it from rocking from left and right sides.

Preferably, the housing is further fixedly provided with a static contact column, the static contact column is arranged above the movable reed, and the insulating block is provided with a plurality of receiving ports for receiving scraps of the movable reed. A plurality of splashes are generated between contacts of the relay in the action process, and can be received through the receiving port of the insulating block, so that the splashes are prevented from entering the iron core.

Preferably, the socket includes a first socket and a plurality of second sockets, the first socket is disposed on the insulating block below the end of the movable reed, and the second socket is disposed on the insulating block below the middle end of the movable reed. Therefore, the movable spring can be accepted at different positions by arranging two different accepting ports, and the effect is better.

Preferably, the cross section of the first positioning block and the cross section of the second positioning block are of a runway type. Thus, the runway-type structure is convenient to fix.

Drawings

FIG. 1 is an exploded view of a direct-acting DC relay according to the present invention;

FIG. 2 is an enlarged schematic view at A of FIG. 1 of the present invention;

FIG. 3 is a schematic view of the pushing mechanism of the present invention;

FIG. 4 is a schematic view of a push rod according to the present invention;

FIG. 5 is a schematic top view of the pushing mechanism of the present invention;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 5 of the present invention;

FIG. 7 is a schematic diagram of a top view of a direct-acting DC relay according to the present invention;

fig. 8 is a cross-sectional view taken along line D-D of fig. 7 of the present invention.

The numbering in the figures illustrates: 1. the device comprises a shell, 2, a partition board, 3, a pushing mechanism, 31, a pushing rod, 311, a first positioning block, 312, a second positioning block, 32, a spring, 33, a movable reed, 4, an insulation block, 41, a first insulation bump, 42, a first receiving port, 43, a second receiving port, 44, a groove, 5, an insulation sleeve, 51, a second insulation bump, 6 and a static contact column.

Detailed Description

Embodiments of the present invention are further described below with reference to the accompanying drawings.

As shown in fig. 1 to 8, the present embodiment relates to a direct-acting dc relay, which includes a housing 1, a partition plate 2 disposed in the housing 1, and a pushing mechanism 3 disposed through the partition plate 2. The partition board 2 is used for isolating the internal structure of the direct current relay and dividing the direct current relay into a lower coil chamber and an upper arc extinguish chamber. A coil device is arranged outside the pushing mechanism 3, the coil device is arranged in the lower coil chamber, and the coil device controls the pushing mechanism 3 to move through a magnetic field generated after the coil device is electrified.

In the present embodiment, the pushing mechanism 3 includes a pushing rod 31, a spring 32 sleeved on the pushing rod 31, and a movable spring 33 disposed at the top end of the pushing rod 31. And a static contact column 6 is also fixedly arranged on the shell 1, and the static contact column 6 is arranged above the movable reed 33. The push rod 31 pushes the movable contact spring 33 at the tip end thereof to abut against the stationary contact post 6, thereby turning on the dc relay.

Wherein, an insulating block 4 is arranged on the partition board 2, and a groove 44 for accommodating the spring 32 is arranged in the insulating block 4. The middle end of the pushing rod 31 is provided with a first positioning block 311, the top end is provided with a second positioning block 312, the first positioning block 311 is arranged in the groove 44, and an insulating sleeve 5 is arranged outside the second positioning block 312. The spring 32 is conveniently held against side-to-side rocking by the groove 44. Pushing mechanism 3 has strengthened the stability of product action in-process and has avoided the dead phenomenon of card because of the not enough clearance that causes through the limit structure of insulating cover 5 and insulating block 4.

In actual use, a plurality of first insulating bumps 41 are disposed in the insulating block 4, and the insulating block 4 abuts against and fixes the first positioning block 311 through the first insulating bumps 41. Can carry on spacingly to the interlude position of catch bar 31 through first insulating lug 41, prevent that it from rocking from side to side. One end of the spring 32 abuts against the first positioning block 311, and the other end abuts against the movable spring piece 33.

In this embodiment, the insulating sleeve 5 includes an extension portion extending into the movable spring 33 to abut against the side of the push rod 31. The movable spring piece 33 and the push rod 31 can be isolated through the extension part, so that the electric arc on the movable spring piece 33 is prevented from colliding with the push rod 31, the high-low voltage insulation is prevented from being reduced, and the service life of the relay is prevented from being influenced.

A plurality of second insulating bumps 51 are arranged in the insulating sleeve 5, and the insulating sleeve 5 is abutted against and fixed on the second positioning blocks 312 through the second insulating bumps 51. The top end part of the push rod 31 can be limited through the second insulating bump 51, and the left-right shaking of the push rod is prevented. Meanwhile, the second insulation bump 51 on the insulation sleeve 5 isolates the whole push rod 31 from high voltage (the movable spring 33), so that the insulation performance is improved, and the reliability of the product is further improved.

In this embodiment, the insulating block 4 is provided with a plurality of receiving openings for receiving the debris of the movable spring 33. The relay can produce a lot of splash in the operation in-process contact, through the faucet of insulating block, can take over these splash, prevents that it from entering into inside the iron core.

The socket includes a first socket 42 and a plurality of second sockets 43, the first socket 42 is disposed on the insulating block 4 below the end of the movable spring plate 33, and the second socket 43 is disposed on the insulating block 4 below the middle end of the movable spring plate 33. Different positions of the movable spring plate 33 can be received through two different receiving ports, and the effect is better.

In actual use, the cross sections of the first positioning block 311 and the second positioning block 312 are of a runway type. The runway-type structure facilitates the fixation of the first positioning block and the second positioning block. Of course, the cross-sectional structures of the first positioning block 311 and the second positioning block 312 may also be rectangular, rhombic, square, etc.

The beneficial effects of the invention are as follows: the first positioning block and the second positioning block are arranged and are limited and fixed through the insulating block and the insulating sleeve, so that the stability of a product in the action process is enhanced, and the phenomenon of locking caused by insufficient gaps is avoided; the insulating block effectively prevents foreign matters (splashes generated between contacts in the action process of the relay) in the relay from entering the movable iron core, and the blocking phenomenon of the relay is effectively improved.

The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a direct action type direct current relay, includes shell (1), sets up baffle (2) in shell (1) and runs through pushing mechanism (3) of setting on baffle (2), its characterized in that: the pushing mechanism (3) comprises a pushing rod (31), a spring (32) sleeved on the pushing rod (31) and a movable reed (33) arranged at the top end of the pushing rod (31), an insulating block (4) is arranged on the partition plate (2), a groove (44) for accommodating the spring (32) is formed in the insulating block (4), a first positioning block (311) is arranged at the middle end of the pushing rod (31), a second positioning block (312) is arranged at the top end of the pushing rod, the first positioning block (311) is arranged in the groove (44), and an insulating sleeve (5) is arranged outside the second positioning block (312);

a plurality of first insulating bumps (41) are arranged in the insulating block (4), and the insulating block (4) is abutted and fixed with the first positioning block (311) through the first insulating bumps (41);

a plurality of second insulating bumps (51) are arranged in the insulating sleeve (5), and the insulating sleeve (5) is abutted against and fixes the second positioning blocks (312) through the second insulating bumps (51).

2. A direct acting dc relay according to claim 1, wherein: the insulating sleeve (5) comprises an extension part, and the extension part extends into the movable spring piece (33) to be abutted against the side edge of the push rod (31).

3. A direct-acting dc relay according to claim 2, wherein: one end of the spring (32) is abutted with the first positioning block (311), and the other end is abutted with the movable spring piece (33).

4. A direct-acting dc relay according to claim 1, wherein: still fixed static contact post (6) of being equipped with on shell (1), static contact post (6) set up in movable contact spring (33) top, be equipped with a plurality of accepts mouths that are used for accepting movable contact spring (33) piece on insulating block (4).

5. A direct acting DC relay according to claim 4, wherein: the socket comprises a first socket (42) and a plurality of second sockets (43), the first socket (42) is arranged on the insulating block (4) below the end part of the movable reed (33), and the second socket (43) is arranged on the insulating block (4) below the middle end of the movable reed (33).

6. A direct-acting dc relay according to claim 1, wherein: the cross sections of the first positioning block (311) and the second positioning block (312) are of a runway type.