A kind of relay
The invention belongs to electronic control device technical field more particularly to a kind of relays.
Relay is a kind of electric control device, is when the variation of input quantity reaches prescribed requirement, in electrical output circuit
In make controlled volume that a kind of electric appliance of scheduled Spline smoothing occur.It has control system (also known as input circuit) and by control
Interactive relationship between system (also known as output loop).It is usually applied in automation control circuit, it is actually with small electricity
Flow away one kind " automatic switch " of control high current running.Therefore play automatic adjustment, safeguard protection, conversion circuit in circuit etc.
Existing relay generally comprises shell, bottom plate and relay main body structure three parts, relay main body structure peace
On bottom plate, shell is fixed on bottom plate, and shell is by relay main body sealing structure.Relay can be generated in the process of work
Heat, since shell is by relay main body sealing structure, the heat generated in the course of work can not distribute in time, be easy
Relay is caused to burn out.In order to solve the problems, such as heat dissipation, some relays have specially opened up stomata on the shell, it is ensured that heat
It sheds in time.But some relays can work under environment more rugged environment, such as relay used in automobile, it should
Class relay switching bearing power is big, and the place such as headlight, lampet, turn signal, taillight, loudspeaker of automobile uses automobile relay
Device, opens up stomata on the shell, and extraneous dust, gas, water etc. can be transferred through influencing relay inside stomata air inlet relay
Normal work, have significant impact to the safety traffic of automobile.
Summary of the invention
The purpose of the present invention is providing a kind of relay, which is exclusively used on automobile, guarantee relay it is dust-proof,
Relay can be made effectively to radiate under the premise of waterproof, the circuit of relay is avoided to burn out.
In order to achieve the above object, base case of the invention are as follows: a kind of relay, including bottom plate, shell, be fixed on
Relay main body structure on bottom plate and the inner casing for sealed relay main structure, inner casing are fixedly mounted on bottom plate；Institute
The side wall of inner casing lower part is stated equipped with the supporting plate around inner casing, supporting plate is equipped with the corrugated bushing of annular；The corrugated bushing is remote
Side from inner casing is equipped with breather cheek valve, and corrugated bushing is equipped with one-way exhaust valve close to the side of inner casing；The shell is fixed
Corrugated bushing upper surface and inner casing is covered, multiple through-holes are provided on the shell.
The working principle of this base case is: the relay is mounted on automobile, automobile in the process of moving, due to
The reasons such as road unevenness are often jolted.The shell of relay is connect with corrugated bushing, and corrugated bushing is flexible article,
Applying active force to corrugated bushing can make corrugated bushing flexible up and down.When driving, relay is relatively fixed for automobile balance, in shell
Gravity under, corrugated bushing is compressed.When automobile jolts, the shell of relay can vertical tremor therewith.Shell
When moving upwards, shell pulls corrugated bushing stretching, extension, and the volume of corrugated bushing becomes larger, and the air pressure inside of corrugated bushing is reduced, this
When breather cheek valve open, extraneous gas entered in corrugated bushing by breather cheek valve.When shell moves downward, shell pair
Corrugated bushing applies active force, compresses to corrugated bushing, and the air pressure inside of corrugated bushing increases at this time, at this time one-way exhaust
Valve is opened, and gas is discharged by unidirectional air inlet and exhaust valve in corrugated bushing, and the gas of discharge can be blown on the inner casing of relay.
The beneficial effect of this base case is: setting inner casing, shell, inner casing, can by relay main body sealing structure
It prevents extraneous dust, moisture etc. from entering the inside of relay, influences the normal work of relay；And the setting of shell is in addition to right
Relay plays the role of outside a reinforcement protection, moreover it is possible to accelerate the heat dissipation of relay.Shell is driven when using automobile bumpiness
It moves up and down, shell keeps corrugated bushing flexible, and in this process, extraneous gas is able to enter in corrugated bushing, and ripple
Gas in casing can be blown on the shell of relay, accelerate the flowing of gas, take away the heat generated when relay work,
Relay is avoided to be burned.
Further, the position of the shell and corrugated bushing contact is equipped with rubber pad.As automobile jolts, relay
Shell also can vertical tremor, the setting of rubber pad effectively buffered the impact force being subject to when shell moves downward, avoided shell
It is damaged.
Further, the outer surface of the inner casing is provided with multiple tracks wind guide tank.The gas flowed out from corrugated bushing can be blown to
The setting on the surface of inner casing, wind guide tank can be such that gas flows along wind guide tank, and gas is made to take away more heat in flow process
Further, multiple blades are fixed on the inner wall of the shell.On the shell during lower vibration, blade also with
Back and forth movement, in this process, blade drive gas flowing, accelerate the heat dissipation of relay.
Further, the outer surface of the inner casing is equipped with the card slot engaged with supporting plate；The supporting plate include two substrates, two
One end of substrate is hinged, and the other end is detachably connected.Supporting plate is made of two substrates, and one end of two substrates is hinged, the other end
It is detachably connected, supporting plate can be opened, is closed.According to actual needs, shell can be installed or removed, when needing shell
When dismantling from relay, supporting plate is opened, supporting plate is made to be detached from card slot, it is very convenient.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of relay embodiment of the present invention.
Below by specific embodiment, the present invention is described in further detail:
Appended drawing reference in Figure of description includes: relay main body structure 1, bottom plate 2, inner casing 3, wind guide tank 31, shell
4, through-hole 41, blade 42, supporting plate 5, corrugated bushing 6, rubber pad 7.
As shown in Figure 1, a kind of relay, successively includes shell 4, inner casing 3, relay main body structure 1 and bottom from top to bottom
Plate 2,1 structure of relay main body knot are fixedly mounted on a base plate 2；The fixation of inner casing 3 is on a base plate 2 and close by relay main body structure 1
Envelope, under the action of inner casing 3, extraneous dust, moisture etc. not can enter inside relay.It is opened on the side wall of 3 lower part of inner casing
There is card slot, engaging has supporting plate 5 on card slot, and supporting plate 5 is looped around the outer surface of inner casing 3.The supporting plate 5 is made of two substrates, and two
One end of substrate is hinged, and for the other end by the connection such as bolt, screw, supporting plate 5 can be with open or close, according to actual needs, can
Supporting plate 5 is installed or removed.Supporting plate 5 is equipped with the corrugated bushing 6 of annular, which is arranged around inner casing 3.
Corrugated bushing 6 is equipped with breather cheek valve far from the side of inner casing 3, and when the air pressure in corrugated bushing 6 is reduced, breather cheek valve is beaten
It opens, extraneous gas can add in corrugated bushing 6；Corrugated bushing 6 is equipped with one-way exhaust valve, wave close to the side of inner casing 3
When air pressure in line casing 6 increases, one-way exhaust valve is opened, and the gas in corrugated bushing 6 can be transferred to the external world, is blown in inner casing
3 surface.Shell 4 is fixed on the upper surface of corrugated bushing 6 and covers inner casing 3, multiple through-holes 41 is offered on shell 4, just
In the flowing of gas；Multiple blades 42 are further fixed on the inner wall of shell 4.During 4 vertical tremor of shell, blade 42
Also back and forth movement therewith, during this, blade 42 drives gas flowing, accelerates the heat dissipation of relay.In 6 shell of corrugated bushing
4 and corrugated bushing 6 contact position be equipped with rubber pad 7, the setting of rubber pad 7 facilitate when bumper housings 4 move downward by
Impact force, avoid shell 4 from being damaged.The outer surface of inner casing 3 is provided with multiple tracks wind guide tank 31.It is flowed out from corrugated bushing 6
Gas can blow to the surface of inner casing 3, and the setting of wind guide tank 31 can be such that gas flows along wind guide tank 31, flow gas
More heats are taken away in the process.
The relay is mounted on automobile, automobile in the process of moving, is often sent out due to road unevenness etc.
Life is jolted.When driving, relay is relatively fixed for automobile balance, and under the gravity of shell 4, corrugated bushing 6 is compressed.Work as vapour
When vehicle jolts, the shell 4 of relay understands vertical tremor therewith.When shell 4 moves upwards, shell 4 pulls corrugated bushing 6 to stretch
Exhibition, the volume of corrugated bushing 6 become larger, and the air pressure inside of corrugated bushing 6 is reduced, and breather cheek valve is opened, and extraneous gas passes through
Breather cheek valve enters in corrugated bushing 6.When shell 4 moves downward, shell 4 applies active force to corrugated bushing 6, to radiation fins
Pipe 6 is compressed, and the air pressure inside of corrugated bushing 6 increases, and one-way exhaust valve is opened, and the gas in corrugated bushing 6 passes through unidirectional
Air inlet and exhaust valve discharge, the gas of discharge can be blown on the inner casing 3 of relay, take away the heat that relay work generates.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.