CN110660617B

CN110660617B - Direct-acting automobile relay

Info

Publication number: CN110660617B
Application number: CN201910815484.8A
Authority: CN
Inventors: 安吉鹏
Original assignee: Xiamen Hongfa Communication Electric Appliance Co ltd
Current assignee: Xiamen Hongfa Communication Electric Appliance Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2021-10-22
Anticipated expiration: 2039-08-30
Also published as: CN113782390A; CN110660617A

Abstract

The invention discloses a direct-acting automobile relay, which comprises a bridge component, an air bag component, two stationary contacts, two movable contacts, a coil, an iron core, a shell and a shell cover, wherein the bridge component is arranged on the air bag component; the shell cover is buckled at the open end at the top of the shell, the coil is fixedly sleeved in the shell, the lower end of the iron core is movably arranged in the center of the coil in a penetrating mode, the middle of the bridge component is fixedly sleeved at the upper end of the iron core, the middle of the bridge component is upwards convexly provided with a push rod, two sides of the push rod are respectively provided with a static contact, the air bag component is fixedly installed at the middle of the shell cover, a sliding rod on the air bag component is downwards opposite to the push rod in the middle of the bridge component, the two movable contact installation shell covers, and the two movable contacts are respectively opposite to the two static contacts. Before the contact is impacted, the rubber sleeve in the air bag component and the air in the cavity of the air bag component generate buffering, noise reduction is realized under the condition of extremely small influence on the contact pressure, and meanwhile, the on-off state of the movable and static contacts is reflected through the on-off state of the NC terminal.

Description

Direct-acting automobile relay

Technical Field

The invention relates to a relay, in particular to a direct-acting automobile relay.

Background

Relays are the main switching elements in automobiles, and the noise level of the relays has a significant influence on the comfort of the driver/passenger. However, the conventional electromagnetic relay relies on direct, non-cushioned contact of the contacts to conduct current, which results in high noise. Some relays directly increase buffer between the contacts, and due to the existence of counter force after the contacts are closed, the contact pressure is reduced, the contact resistance is increased, the contact heating is increased, and the relay performance is reduced. In addition, with the development of automobile intelligence, the whole factory pays more attention to the feedback of the contact state such as whether the contact is normally closed. Conventional relays have been unable to meet these requirements.

Disclosure of Invention

The invention aims to provide a relay for a direct-acting automobile with a noise reduction design.

In order to achieve the purpose, the technical solution of the invention is as follows:

the invention relates to a direct-acting automobile relay, which comprises a bridge component, an air bag component, two stationary contacts, two movable contacts, a coil, an iron core, a shell and a shell cover, wherein the bridge component is arranged on the air bag component; the shell cover is buckled at the open end of the top of the shell, the coil is fixedly sleeved in the shell, the lower end of the iron core movably penetrates through the center of the coil, the middle part of the bridge assembly is fixedly sleeved at the upper end of the iron core, the middle part of the bridge assembly is upwards provided with a push rod in a protruding mode, and two sides of the push rod are respectively provided with a movable contact; the air bag component is fixedly installed in the middle of the shell cover, a sliding rod on the air bag component faces downwards and is opposite to an ejector rod in the middle of the bridge component, the two static contact installation shells cover and are located on two sides of the air bag component, the two movable contacts are opposite to the two static contacts respectively, after the bridge component rises, the ejector rod of the bridge component contacts with the sliding rod on the air bag component firstly, and the two static contacts contact with the two movable contacts respectively.

The air bag component comprises a pressing sheet, a rubber sleeve, a reed and a base; the pressing sheet, the rubber sleeve, the reed and the base are sequentially overlapped, and the pressing sheet and the base are fixed together; the rubber sleeve comprises an air bag body, an air bag top plate, an air bag rod and an air bag fold, the air bag top plate is installed at the top of the air bag body, the air bag fold is arranged at the joint of the air bag top plate and the air bag body, the air bag rod is vertically fixed in the middle of the air bag top plate, an air bag hole is formed in the air bag top plate, and the free end of the air bag rod penetrates through a through hole in the middle of a pressing sheet.

The air bag component comprises a shell, a sliding rod component, a reed and a base; the outer shell, the sliding rod assembly, the reed and the base are sequentially overlapped, and the outer shell and the base are fixed together; the middle part of the shell is provided with a through hole, the sliding rod component consists of a sliding rod and a sealing sleeve, the sliding rod is vertically fixed in the center of the sealing sleeve, and the free end of the sliding rod penetrates out of the through hole of the shell.

The reed comprises an upper arc plate and a lower arc plate, the upper arc plate and the lower arc plate are both arc-shaped, the lower arc plate is fixed in the middle of the upper arc plate, and an elastic area is formed between the upper arc plate and the lower arc plate.

The base is provided with NC terminals which are arranged oppositely, and a bulge is arranged between the NC terminals which are arranged oppositely.

After the scheme is adopted, before the contact is impacted, the rubber sleeve in the air bag component and the air in the cavity of the air bag component generate buffering. There are two ways to realize the air bag module, one is to compress the gas to make the gas density bigger; one is to evacuate air to reduce the gas density; before the contact is impacted, the reed generates buffering; before the contact contacts, the reed can conduct two NC terminals; after the contact is impacted and contacted, along with the release of gas or the filling of the gas (because the airbag assemblies are different, two implementation modes are provided), the counter force of the airbag assembly can disappear quickly and approaches to zero, and the contact pressure is not influenced; after the contact is impacted and contacted, the counterforce of the reed can disappear by half or more due to the special structure of the reed, so that the influence on the contact pressure is reduced; after the contact is contacted, the two ends of the reed are tilted due to the convex block on the base component, and the connection of the NC terminal is disconnected. Through the operation, noise reduction is realized under the condition that the influence on the contact pressure is extremely small, and meanwhile, the on-off state of the movable and static contacts is reflected through the on-off of the NC terminal.

The invention is further described with reference to the following figures and specific embodiments.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the relay of the present invention;

FIG. 2 is a schematic structural view of a first embodiment of an airbag module of the present invention;

FIG. 3 is a schematic structural view of a first embodiment of a reed of the present invention;

FIG. 4 is a schematic structural view of a first embodiment of the rubber boot of the present invention;

FIG. 5 is a schematic structural view of a first embodiment of the base assembly of the present invention;

FIG. 6 is a schematic structural view of a second embodiment of an airbag module of the present invention;

FIG. 7 is a schematic structural view of a second embodiment of the housing of the present invention;

FIG. 8 is a schematic structural view of a second embodiment of a slide bar assembly of the present invention;

fig. 9 is a schematic structural view of a second embodiment of the base assembly of the present invention.

Detailed Description

As shown in figure 1, the invention relates to a direct-acting automobile relay, which comprises a bridge component 1, an air bag component 2, two fixed contacts 3, two movable contacts 4, a coil (not shown in the figure), an iron core 6, a shell 7 and a shell cover 8.

The shell cover 8 is buckled at the open end of the top of the shell 7, the coil is fixedly sleeved in the shell 7, the lower end of the iron core 6 movably penetrates through the center of the coil, the middle part of the bridge component 1 is fixedly sleeved at the upper end of the iron core 6, the middle part of the bridge component 1 is upwards provided with a push rod 11 in a protruding mode, and two sides of the push rod 11 are respectively provided with a movable contact 4; the air bag component 2 is fixedly installed in the middle of the shell cover 8, a sliding rod on the air bag component 2 faces downwards and is opposite to a push rod 11 in the middle of the bridge component 1, the two static contacts 3 are installed on the shell cover 8 and are located on two sides of the air bag component 2, the two movable contacts 4 are respectively opposite to the two static contacts 3, after the bridge component rises 1, the push rod 11 of the bridge component 1 is firstly contacted with the sliding rod on the air bag component 2, and the two static contacts 3 are respectively contacted with the two movable contacts 4.

As shown in fig. 3, the spring plate 23 is composed of an upper arc plate 231 and a lower arc plate 232, the upper arc plate 231 and the lower arc plate 232 are both arc-shaped, the lower arc plate 232 is fixed in the middle of the upper arc plate 231, and an elastic region is formed between the upper arc plate 231 and the lower arc plate 232.

As shown in fig. 5, the base 24 is provided with NC terminals 241 arranged oppositely, and a projection 242 is provided between the NC terminals 241 arranged oppositely.

The air bag component is composed of two structural schemes:

as shown in fig. 2 and 4, the first airbag module embodiment:

the air bag component 2 comprises a pressing sheet 21, a rubber sleeve 22, a reed 23 and a base 24; the pressing sheet 21, the rubber sleeve 22, the reed 23 and the base 24 are sequentially overlapped, and the pressing sheet 21 and the base 24 are fixed together; the rubber sleeve 22 comprises an air bag body 221, an air bag top plate 222, an air bag rod 223 and an air bag fold 224, wherein the air bag top plate 222 is installed at the top of the air bag body 221, the air bag fold 224 is arranged at the joint of the air bag top plate 222 and the air bag body 221, the air bag rod 223 is vertically fixed in the middle of the air bag top plate 222, an air bag hole 2221 is formed in the air bag top plate 222, and the free end of the air bag rod 223 penetrates through the through hole 211 in the middle of the pressing sheet 21.

As shown in fig. 6-9, a second airbag module embodiment:

the air bag component 2 ' comprises a shell 21 ', a sliding rod component 22 ', a reed 23 ' and a base 24 '; the shell 21 ', the sliding rod assembly 22', the reed 23 'and the base 24' are overlapped in sequence, and the shell 21 'and the base 24' are fixed together; the middle part of the shell 21 'is provided with a through hole 211', the sliding rod assembly 22 'is composed of a sliding rod 221' and a sealing sleeve 222 ', the sliding rod 221' is vertically fixed at the center of the sealing sleeve 222 ', and the free end of the sliding rod 221' penetrates out of the through hole 211 'of the shell 21'. The base 24 'is provided with NC terminals 241' disposed opposite to each other, and a projection 242 'is provided between the NC terminals 241' disposed opposite to each other.

As shown in fig. 1-6, the working principle of the present invention is:

when the bridge component 1 moves upwards, before the fixed contact 3 touches the movable contact 4, the top rod 11 on the bridge component 1 touches the air bag rod 223 (or the sliding rod 221 '), the top rod 11 buffers the movable bridge component 1 through the change of the gas in the rubber sleeve 22 (or the shell 21') and the reed 23, reduces the movement speed of the movable bridge component 1, and enables the fixed contact 3 to touch the movable contact 4 at a lower speed, thereby achieving the purpose of reducing noise. When the movement is over, the air pressure in the rubber sleeve 22 (or the housing 21') is discharged through the small hole, so that no substantial counter force is generated. The reed 23 is also deformed so that the remaining reaction force is half or less of the maximum reaction force. Before the bridge component 1 moves, the NC terminal is in a conducting normally closed state, when the fixed contact 3 is contacted with the movable contact 4, two ends of the reed 23 tilt up to disconnect the NC terminal, and therefore the on-off state of the movable contact and the static contact is reflected through the conducting and the disconnecting of the NC contact.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.

Claims

1. A be used for automobile relay of direct action type which characterized in that: the bridge component is arranged on the shell and comprises a bridge component, an air bag component, two fixed contacts, two movable contacts, a coil, an iron core, a shell and a shell cover; the shell cover is buckled at the open end of the top of the shell, the coil is fixedly sleeved in the shell, the lower end of the iron core movably penetrates through the center of the coil, the middle part of the bridge assembly is fixedly sleeved at the upper end of the iron core, the middle part of the bridge assembly is upwards provided with a push rod in a protruding mode, and two sides of the push rod are respectively provided with a movable contact; the airbag assembly is fixedly installed in the middle of the shell cover, a sliding rod or an airbag rod on the airbag assembly faces downwards and is opposite to an ejector rod in the middle of the bridge assembly, the two static contact installation shell covers and is located on two sides of the airbag assembly, the two movable contacts are opposite to the two static contacts respectively, after the bridge assembly rises, the ejector rod of the bridge assembly contacts with the sliding rod or the airbag rod on the airbag assembly firstly, the two static contacts contact with the two movable contacts respectively, a base of the airbag assembly is provided with NC terminals which are arranged oppositely, and a bulge is arranged between the NC terminals which are arranged oppositely.

2. The relay for a direct acting type car according to claim 1, wherein: the air bag component comprises a pressing sheet, a rubber sleeve, a reed and a base; the pressing sheet, the rubber sleeve, the reed and the base are sequentially overlapped, and the pressing sheet and the base are fixed together; the rubber sleeve comprises an air bag body, an air bag top plate, an air bag rod and an air bag fold, the air bag top plate is installed at the top of the air bag body, the air bag fold is arranged at the joint of the air bag top plate and the air bag body, the air bag rod is vertically fixed in the middle of the air bag top plate, an air bag hole is formed in the air bag top plate, and the free end of the air bag rod penetrates through a through hole in the middle of a pressing sheet.

3. The relay for a direct acting type car according to claim 1, wherein: the air bag component comprises a shell, a sliding rod component, a reed and a base; the outer shell, the sliding rod assembly, the reed and the base are sequentially overlapped, and the outer shell and the base are fixed together; the middle part of the shell is provided with a through hole, the sliding rod component consists of a sliding rod and a sealing sleeve, the sliding rod is vertically fixed in the center of the sealing sleeve, and the free end of the sliding rod penetrates out of the through hole of the shell.

4. The relay for a direct-acting type automobile according to claim 2 or 3, characterized in that: the reed comprises an upper arc plate and a lower arc plate, the upper arc plate and the lower arc plate are both arc-shaped, the lower arc plate is fixed in the middle of the upper arc plate, and an elastic area is formed between the upper arc plate and the lower arc plate.