CN205959893U - Three contact shuntings open dynamic relay - Google Patents

Abstract

The utility model relates to a three contact shuntings open dynamic relay mainly includes to be provided with terminal and coil lead wire screw on shell, installing support, the shell, and the shell is connected with the installing support, is provided with coil, iron core and push rod, movable contact plate and reset spring in the shell, movable contact plate is the movable contact, and the terminal is the stationary contact, and movable contact plate sets up with the push rod linkage to can be electrically conductive with the terminal contact, it is three that its characteristics are that the terminal has, an input binding post and two output wiring column, three terminal is regular triangle and arranges on the plane, movable contact plate is partition trident sheetmetal. It will be divided into two tunnel less electric currents than the heavy current, cause movable contact and stationary contact taking place bonding phenomenon, control circuit who from this constitutes and starter safe and reliable.

Description

Three contact shunting starting relays

Technical field

The utility model belongs to starter motor for internal combustion engine relay technical field and in particular to the startup of starter motor for internal combustion engine continues Electrical equipment.

Background technology

Starting relay is the electromagnetic switch controlling larger current in starter motor for internal combustion engine with smaller current.It is in circuit Play safeguard protection ignition switch and the important function of change-over circuit.The conventional starting relay with two contacts, and Hold-in winding and the suction coil of electromagnetic switch are connected on same contact, controls starter motor rotation, and promote starting The driving gear of machine is engaged with engine flywheel, so that starter is worked.

The starting relay Shortcomings of existing two contacts have：The contact of starting relay connects switching for a long time Under the normal loading conditions opened, high temperature produced by larger current will lead to contact that bonding phenomenon can occur, and so will result in Starting relay control circuit can not disconnect, and meeting starter is out of control or scraps, or causes vehicle crew's injures and deaths major accident.

At present, existing many pertinent literature reports with regard to starting relay.But for this problem, never very well Solution technology.

Content of the invention

The utility model purpose is for the problems referred to above existing for the starting relay of existing two electric shocks, provides one kind Can larger current be shunted, it is to avoid so that contact is bondd, safer reliable three contact shunting starting relays.

The technical scheme that the utility model is taken for achieving the above object is：

Three contact shunting starting relays, including：Binding post is provided with shell, mounting bracket, shell and coil draws Line screw, shell is connected with mounting bracket, and inside the shell is provided with coil, iron core and push rod, dynamic touch panel and back-moving spring, described Dynamic touch panel is movable contact, and binding post is stationary contact, and dynamic touch panel is arranged with push rod linkage, and can contact conduction with binding post；It is special Levy and be：Described binding post has three, a lead-in clamp and two output wiring terminals.

Equilateral triangle distribution is pressed in described three binding post positions.

Described dynamic touch panel is decile trident sheet metal, and it is located in inside the shell and the groove of its form fit, and three Fork-shaped is corresponding with described three binding post positions respectively.

The utility model compared with prior art had the advantage that for：

Starting relay of the present utility model, using three contact shuntings, will be divided into two-way smaller current compared with heavy current, cause Movable contact and stationary contact is made not to occur bonding phenomenon, the control circuit thus constituting and starter safe and reliable.It can be used for Automobile, train, aircraft, steamer, tank and various starter motor for internal combustion engine.

Brief description

Fig. 1 is the structural representation of three contact shunting starting relays；

Fig. 2 is the top view of structure shown in Fig. 1；

The decile trident of Fig. 3 starting relay moves touch panel schematic diagram；

Fig. 4 is the starter circuit being made up of three contact shunting starting relays.

In figure：Shell 1, mounting bracket 2, binding post 3, coil lead screw 4, coil 5, iron core and push rod 6, dynamic touch panel 7, Back-moving spring 8.

Specific embodiment

Below in conjunction with accompanying drawing, embodiment is described in detail further.

Shown in Fig. 1 and Fig. 2, the utility model is disclosed three contact shunting starting relays, and three contact shuntings open Motor type relay, including：Binding post 3 and coil lead screw 4, shell 1 and installation are provided with shell 1, mounting bracket 2, shell Support 2 is connected, and is provided with coil 5, iron core and push rod 6, dynamic touch panel 7 and back-moving spring 8 in shell 1, and described dynamic touch panel 7 is Contact, binding post 3 is stationary contact, and dynamic touch panel 7 is arranged with iron core and push rod 6 linkage, and can contact conduction with binding post 3；It is special Point is：Described binding post 3 has three, a lead-in clamp and two output wiring terminals.

Shown in Fig. 2, described three binding posts are in equilateral triangle arrangement in the plane.

Shown in Fig. 3, described dynamic touch panel 7 is decile trident sheet metal, and it is located at the groove of inside the shell and its form fit Interior, and three fork-shapeds are corresponding with described three binding post positions respectively.

Application example of the present utility model

Shown in Fig. 4, the starter circuit that is made up of three contact shunting starting relays, wherein：This starter circuit bag The electric elements such as E containing power supply, ignition switch DK, three contact shunting starting relay J, electromagnetic switch CK and starter motor M, And be made up of control circuit I and operating circuit II；Three described contact shunting starting relay J include coil 5, iron core and push away Bar 6, dynamic touch panel 7, stationary contact, i.e. binding post 3, back-moving spring 8 and shell 1.Electromagnetic switch CK contains two of electromagnetic switch CK Coil CL1, CL2.

Described control circuit I is made up of the coil 5 of power supply E, ignition switch DK, three contact shunting starting relay J, Its power supply E minus earth, positive pole connects coil 5 one end of three contact shunting starting relay J (by line through ignition switch DK Circle lead screw 4 connects), another termination bonding of coil 5；

Operating circuit II is by power supply E, three binding posts 3 of three contact shunting starting relay J and dynamic touch panel 7, electromagnetism Switch CK and starter motor M is constituted；One of three binding posts 3 of its power supply E positive pole connection starting relay J, three Second connection solenoid winding CL1 in binding post 3, another termination bonding of solenoid winding CL1；Last connects Terminal 3 connects solenoid winding CL2, and another termination of solenoid winding CL2 connects starter motor M, and drives starting Dynamo-electric machine M is compared with low speed rotation, and promotes the driving gear of starter to engage with engine flywheel.

Described power supply E positive pole is simultaneously connected with mono- stationary contact of electromagnetic switch CK, and another stationary contact of electromagnetic switch CK is even Connect motor, and drive starter motor M higher speed to rotate；

Described control circuit I is different with wire thickness used by operating circuit II, and wherein control circuit wire is than work Circuit lead is thin much.

After ignition switch DK of the present utility model is connected, coil 5 produces magnetic force and attracts push rod and electromagnet 6 to overcome reset The elastic force of spring 8 promotes three stationary contact closures that dynamic touch panel 7 and three binding posts 3 are constituted, now, the action of electromagnetic switch CK, The driving gear promoting starter is engaged with engine flywheel, in the process, dynamic touch panel 7 ability only when closing with stationary contact What power supply conduction, when not closed, do not take over thereon, it is to avoid connects wire thereon, and impact running completes；Compared with heavy current I through input Stationary contact, dynamic touch panel 7 and two output stationary contacts are divided into two smaller current I1 and I2, and respectively enter electromagnetic switch CK Two coils CL1, CL2.Now I=I1+I2, and I1 ＜ I, I2 ＜ I, thus reached shunting effect, it is to avoid startup relay Device leads to contact adhesion phenomenon and causes control relay circuit I can not break in the heat effect generation high temperature of larger current because of contact Open the fault out of control with starter；After ignition switch DK disconnects, coil 5 magnetic force disappears, and push rod and electromagnet 6 are in back-moving spring The 8 lower return of elastic force effect, dynamic touch panel 7 is separated with three stationary contacts, completes a course of work.

Starter is using unidirectional drive mode, when the rotating speed of the little gear on starter motor is higher than engine flywheel tooth During the speed of circle, motor drives engine to turn, and when the rotating speed of engine is higher than motor, the power transmission between them is closed System automatically terminates.

The starter circuit that three contact shunting starting relays are constituted, pioneer mechanical starter motor M is compared with low speed rotation；So Higher speed rotation afterwards；When the driving gear of starter is engaged with engine flywheel and starts engine, it is effectively reduced engagement The impact of gear mesh, alleviates and gear rattle is damaged.

Claims (3)

1. three contact shunting starting relay, including：Be provided with shell (1), mounting bracket (2), shell binding post (3) with Coil lead screw (4), shell (1) is connected with mounting bracket (2), is provided with coil (5), iron core and push rod in shell (1) (6) touch panel (7) and back-moving spring (8), are moved, described dynamic touch panel (7) is movable contact, binding post (3) is stationary contact, dynamic touch panel (7) Arrange with iron core and push rod (6) linkage, and conduction can be contacted with binding post (3)；It is characterized in that：Described binding post (3) has three Individual, a lead-in clamp and two output wiring terminals.

2. three contact shunting starting relays according to claim 1 it is characterised in that：Described three binding posts (3) It is in equilateral triangle arrangement in the plane.

3. three contact shunting starting relays according to claim 1 it is characterised in that：Described dynamic touch panel (7) be etc. Divide trident sheet metal, it is located in shell (1) and in the groove of its form fit, and three fork-shapeds are connect with described three respectively Terminal (3) position corresponds to.