A direct-acting automobile relay

Abstract

The present invention discloses a direct-acting automobile relay, comprising a bridge assembly, an airbag assembly, two static contacts, two moving contacts, a coil, an iron core, a shell, and a shell cover; the airbag assembly comprises a rubber sleeve, and the rubber sleeve comprises an airbag body, an airbag top plate, an airbag rod, and airbag folds. In the present invention, before the contact impacts, the rubber sleeve in the airbag assembly and the gas in the airbag assembly in the cavity generate a buffer, which can effectively reduce noise; before the contact contacts, the reed will conduct the two NC terminals; after the contact impacts, with the release of gas or the filling of gas, the reaction force of the airbag assembly will quickly disappear and approach zero, without affecting the contact pressure; after the contact impacts, due to the special structure of the reed, the reaction force of the reed will disappear by half or more, reducing the impact on the contact pressure, thereby maintaining the relay performance.

Description

Technical Field

[0001] The invention relates to a relay, in particular to a direct-acting automobile relay. Background Art

[0002] Relays are the main switching components in automobiles, and their noise has a significant impact on the comfort of drivers and passengers. However, existing electromagnetic relays rely on direct, unbuffered contact of contacts to conduct current, resulting in high noise. Some relays directly add buffers between contacts. After the contacts are closed, the reaction force reduces the contact pressure, which increases the contact resistance, causing increased contact heating and reduced relay performance.

[0003] In view of this, the inventor has made in-depth considerations and actively researched, improved and tried to develop the present invention in order to solve the many deficiencies and inconveniences caused by the imperfect structure design of the above-mentioned relay. Summary of the invention

[0004] The object of the present invention is to provide a direct-acting automobile relay which can reduce noise while maintaining relay performance.

[0005] To achieve the above purpose, the technical solution of the present invention is:

[0006] A direct-acting automobile relay comprises a bridge assembly, an airbag assembly, two static contacts, two moving contacts, a coil, an iron core, a shell, and a shell cover; the shell cover is buckled on the open end of the top of the shell, the coil is fixedly sleeved in the shell, the lower end of the iron core is movably inserted in the center of the coil, the middle part of the bridge assembly is fixedly sleeved on the upper end of the iron core, a push rod is protruded upward in the middle part of the bridge assembly, and a moving contact is respectively provided on both sides of the push rod; the airbag assembly is fixedly installed in the middle part of the shell cover, the airbag assembly comprises a rubber sleeve, and the rubber sleeve comprises an airbag body, an airbag top plate, an airbag rod, an airbag The airbag folds are arranged on the top plate of the airbag body, and the airbag folds are arranged at the joint of the top plate of the airbag body and the airbag folds. The airbag rod is vertically fixed in the middle of the top plate of the airbag, and an airbag hole is arranged on the top plate of the airbag, and one end of the airbag rod is a free end.

[0007] Preferably, the airbag assembly further comprises a pressing plate, a reed, and a base; the pressing plate, rubber sleeve, reed, and base are stacked in sequence and the pressing plate and the base are fixed together; a through hole is provided in the middle of the pressing plate, and the free end of the airbag rod passes through the through hole in the middle of the pressing plate.

[0008] Preferably, the spring sheet is composed of an upper arc plate and a lower arc plate, both of which are arc-shaped, and the lower arc plate is fixed to the middle of the upper arc plate to form an elastic area between the upper arc plate and the lower arc plate.

[0009] Alternatively, a direct-acting automotive relay comprises a bridge assembly, an airbag assembly, two static contacts, two moving contacts, a coil, an iron core, a shell, and a shell cover; the shell cover is buckled on 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 inserted into the center of the coil, the middle part of the bridge assembly is fixedly sleeved on the upper end of the iron core, a push rod is protruding upward from the middle part of the bridge assembly, and a moving contact is respectively provided on both sides of the push rod; the airbag assembly is fixedly installed in the middle part of the shell cover, the airbag assembly comprises a sliding rod assembly, the sliding rod assembly is composed of a sliding rod and a sealing sleeve, the sliding rod is downward and opposite to the push rod in the middle part of the bridge assembly, the two static contacts are installed on the shell cover and are located on both sides of the airbag assembly, the two moving contacts are respectively opposite to the two static contacts, after the bridge assembly rises, the push rod of the bridge assembly contacts the sliding rod on the airbag assembly first, and the two static contacts contact the two moving contacts later, the sliding rod is vertically fixed in the center of the sealing sleeve, and one end of the sliding rod is a free end.

[0010] Preferably, the airbag assembly further comprises a shell, a reed, and a base; the shell, the sliding rod assembly, the reed, and the base are stacked in sequence and the shell and the base are fixed together; a through hole is opened in the middle of the shell, and the free end of the sliding rod passes through the through hole of the shell.

[0011] Preferably, the spring sheet is composed of an upper arc plate and a lower arc plate, both of which are arc-shaped, and the lower arc plate is fixed to the middle of the upper arc plate to form an elastic area between the upper arc plate and the lower arc plate.

[0012] After adopting the above scheme, before the contacts impact, the rubber sleeve in the airbag assembly and the gas in the cavity of the airbag assembly produce a buffer, which can effectively reduce noise; here, the airbag assembly has two implementation methods, one is to compress the gas to increase the gas density; the other is to evacuate the gas to reduce the gas density; before the contacts impact, the reed produces a buffer; before the contacts contact, the reed will connect the two NC terminals; after the contacts impact and contact, with the release of gas or the filling of gas (due to different airbag assemblies, there are two implementation methods), the reaction force of the airbag assembly will quickly disappear and approach zero, and will not affect the contact pressure; after the contacts impact and contact, due to the special structure of the reed, the reaction force of the reed will disappear by half or more, reducing the impact on the contact pressure, thereby maintaining the performance of the relay.

[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the relay of the present invention;

[0015] Figure 2 It is a schematic structural diagram of a first embodiment of an airbag assembly of the present invention;

[0016] Figure 3 It is a structural schematic diagram of a first embodiment of the reed of the present invention;

[0017] Figure 4 It is a structural schematic diagram of a first embodiment of the rubber sleeve of the present invention;

[0018] Figure 5 It is a structural schematic diagram of a first embodiment of a base assembly of the present invention;

[0019] Figure 6 is a schematic structural diagram of a second embodiment of an airbag assembly of the present invention;

[0020] Figure 7 is a schematic structural diagram of a second embodiment of a housing of the present invention;

[0021] Figure 8 is a structural schematic diagram of a second embodiment of a sliding rod assembly of the present invention;

[0022] Fig. 9 It is a structural schematic diagram of the second embodiment of the base assembly of the present invention. DETAILED DESCRIPTION

[0023] like Figure 1 As shown, the present invention is a direct-acting automobile relay, comprising a bridge assembly 1, an airbag assembly 2, two static contacts 3, two moving contacts 4, a coil (not shown in the figure), an iron core 6, a shell 7, and a shell cover 8.

[0024] The shell cover 8 is buckled on 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 is movably inserted in the center of the coil, the middle part of the bridge assembly 1 is fixedly sleeved on the upper end of the iron core 6, a push rod 11 is protruded upward from the middle part of the bridge assembly 1 and a moving contact 4 is respectively provided on both sides of the push rod 11; the airbag assembly 2 is fixedly installed in the middle part of the shell cover 8, the sliding rod on the airbag assembly 2 is downward and opposite to the push rod 11 in the middle part of the bridge assembly 1, the two static contacts 3 are installed on the shell cover 8 and are located on both sides of the airbag assembly 2, the two moving contacts 4 are respectively opposite to the two static contacts 3, after the bridge assembly is lifted, the push rod 11 of the bridge assembly 1 first contacts with the sliding rod on the airbag assembly 2, and the two static contacts 3 contact with the two moving contacts 4 respectively.

[0025] like Figure 3As shown, the spring plate 23 is composed of an upper arc plate 231 and a lower arc plate 232 , both of which are arc-shaped. The lower arc plate 232 is fixed to the middle of the upper arc plate 231 , and an elastic area is formed between the upper arc plate 231 and the lower arc plate 232 .

[0026] like Figure 5 As shown, the base 24 is provided with NC terminals 241 arranged opposite to each other, and a protrusion 242 is provided between the NC terminals 241 arranged opposite to each other.

[0027] The airbag assembly has two structural schemes:

[0028] like Figure 2 , Figure 4 As shown, the first airbag assembly embodiment:

[0029] The airbag assembly 2 includes 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 overlapped in sequence and the pressing sheet 21 and the base 24 are fixed together; the rubber sleeve 22 includes an airbag body 221, an airbag top plate 222, an airbag rod 223, and an airbag fold 224, the airbag top plate 222 is installed on the top of the airbag body 221, and the airbag fold 224 is provided at the junction of the airbag top plate 222 and the airbag body 221, the airbag rod 223 is vertically fixed to the middle of the airbag top plate 222, an airbag hole 2221 is opened on the airbag top plate 222, and the free end of the airbag rod 223 passes through the through hole 211 in the middle of the pressing sheet 21.

[0030] like Figure 6-Figure 9 As shown, the second airbag assembly embodiment:

[0031] The airbag assembly 2' comprises a shell 21', a sliding rod assembly 22', a reed 23', and a base 24'; the shell 21', the sliding rod assembly 22', the reed 23', and the base 24' are stacked in sequence and the shell 21' and the base 24' are fixed together; a through hole 211' is provided in the middle of the shell 21', the sliding rod assembly 22' is composed of a sliding rod 221' and a sealing sleeve 222', the sliding rod 221' is vertically fixed in the center of the sealing sleeve 222', and the free end of the sliding rod 221' passes through the through hole 211' of the shell 21'. The base 24' is provided with oppositely arranged NC terminals 241', and a protrusion 242' is provided between the oppositely arranged NC terminals 241'.

[0032] like Figure 1-Figure 6 As shown, the working principle of the present invention is:

[0033] When the bridge assembly 1 moves upward, before the static contact 3 touches the moving contact 4, the top rod 11 on the bridge assembly 1 first touches the airbag rod 223 (or sliding rod 221'). The top rod 11 buffers the moving bridge assembly 1 through the internal gas changes of the rubber sleeve 22 (or the outer shell 21') and the reed 23, reducing its movement speed, so that the static contact 3 and the moving contact 4 collide at a relatively low speed, thereby achieving the purpose of noise reduction. When the movement is over, the air pressure in the rubber sleeve 22 (or the outer shell 21') will be released in the small hole, so that basically no reaction force is generated. The reed 23 also produces special deformation, so that its remaining reaction force is only half of its maximum reaction force or less. Before the bridge assembly 1 moves, the NC terminal is in a normally closed state. When the static contact 3 contacts the moving contact 4, the two ends of the reed 23 are tilted, disconnecting the NC terminal, thereby reflecting the on-off state of the moving and static contacts through the conduction and disconnection of the NC contact.

[0034] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the specification should still fall within the scope covered by the patent of the present invention.

Claims

1. A direct-acting automotive relay, characterized in that: It includes a bridge assembly, an airbag assembly, two static contacts, two moving contacts, a coil, an iron core, a shell, and a shell cover; the shell cover is buckled on the open end of the top of the shell, the coil is fixedly sleeved in the shell, the lower end of the iron core is movably inserted into the center of the coil, the middle part of the bridge assembly is fixedly sleeved on the upper end of the iron core, a push rod is protruding upward from the middle part of the bridge assembly, and a moving contact is respectively provided on both sides of the push rod; the airbag assembly is fixedly installed in the middle part of the shell cover, the airbag assembly includes a rubber sleeve and a base, the rubber sleeve includes an airbag body, an airbag top plate, an airbag rod, and airbag folds, the airbag rod is downward and opposite to the push rod in the middle part of the bridge assembly, two static contacts are installed on the shell cover and are located on both sides of the airbag assembly, The two moving contacts are respectively opposite to the two static contacts. After the bridge assembly rises, the top rod of the bridge assembly first contacts the airbag rod on the airbag assembly, and the two static contacts contact the two moving contacts respectively. The airbag top plate is installed on the top of the airbag body, and airbag folds are provided at the junction of the airbag top plate and the airbag body. The airbag rod is vertically fixed in the middle of the airbag top plate, and an airbag hole is opened on the airbag top plate. One end of the airbag rod is a free end; the base is provided with NC terminals arranged opposite to each other. Before the bridge assembly moves, the NC terminals are in a normally closed state. When the static contacts contact the moving contacts, the NC terminals are disconnected, so that the on-off state of the moving and static contacts is reflected through the conduction and disconnection of the NC contacts.

2. A direct-acting automotive relay according to claim 1, characterized in that: The airbag assembly also includes a pressing plate, a spring plate, and a base; the pressing plate, rubber sleeve, spring plate, and base are stacked in sequence and the pressing plate and the base are fixed together; a through hole is provided in the middle of the pressing plate, and the free end of the airbag rod passes through the through hole in the middle of the pressing plate.

3. A direct-acting automotive relay according to claim 2, characterized in that: The spring sheet is composed of an upper arc plate and a lower arc plate, both of which are arc-shaped, and the lower arc plate is fixed to the middle of the upper arc plate to form an elastic area between the upper arc plate and the lower arc plate.

4. A direct-acting automotive relay, characterized in that: The invention comprises a bridge assembly, an airbag assembly, two static contacts, two moving contacts, a coil, an iron core, a shell and a shell cover; the shell cover is buckled on 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 inserted in the center of the coil, the middle part of the bridge assembly is fixedly sleeved on the upper end of the iron core, a push rod is protruding upward in the middle part of the bridge assembly and a moving contact is respectively provided on both sides of the push rod; the airbag assembly is fixedly installed in the middle part of the shell cover, the airbag assembly comprises a sliding rod assembly and a base, the sliding rod assembly is composed of a sliding rod and a sealing sleeve, the sliding rod is downward and is connected to the middle part of the bridge assembly The top rods are opposite to each other, and the two static contacts are installed on the shell cover and located on both sides of the airbag assembly. The two moving contacts are opposite to the two static contacts respectively. After the bridge assembly rises, the top rod of the bridge assembly contacts the sliding rod on the airbag assembly first, and the two static contacts contact the two moving contacts respectively. The sliding rod is vertically fixed in the center of the sealing sleeve, and one end of the sliding rod is a free end. The base is provided with NC terminals arranged opposite to each other. Before the bridge assembly moves, the NC terminals are in a normally closed state. When the static contact contacts the moving contact, the NC terminal is disconnected, so that the on-off state of the moving and static contacts is reflected through the conduction and disconnection of the NC contacts.

5. A direct-acting automotive relay according to claim 4, characterized in that: The airbag assembly also includes a shell, a reed, and a base; the shell, the sliding rod assembly, the reed, and the base are stacked in sequence and the shell and the base are fixed together; a through hole is opened in the middle of the shell, and the free end of the sliding rod passes through the through hole of the shell.

6. A direct-acting automotive relay according to claim 5, characterized in that: The spring sheet is composed of an upper arc plate and a lower arc plate, both of which are arc-shaped, and the lower arc plate is fixed to the middle of the upper arc plate to form an elastic area between the upper arc plate and the lower arc plate.

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