KR20180120006A - Electromagnetic switching device and one touch mounting strcuture thereof - Google Patents

Abstract

An electromagnetic switch according to the present invention includes a main body and a pair of fixing rings provided on the main body, forming a slit and having elasticity. The fixing ring is detachably installed in the main body. A fixing member body is installed in the main body so that the fixing ring is arranged inside. At this time, the fixing member body is integrated with the main body or detachably installed in the main body. Accordingly, the present invention can easily and quickly fix the electromagnetic switch.

Description

ELECTROMAGNETIC SWITCHING DEVICE AND ONE TOUCH MOUNTING STRUCTURE THEREOF BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to an electromagnetic switch, and more particularly, to an electromagnetic switch capable of easily fixing an electromagnetic switch to a junction box of an automobile or the like at one-touch and a fixing structure thereof.

Generally, an electric vehicle uses a motor using a battery as a power source, and a hybrid electric vehicle uses a motor using an engine of an internal combustion engine and a battery as a power source. In a hybrid vehicle or an electric vehicle, a plurality of batteries are connected in series or series and a parallel combination structure according to a required capacity, and the vehicle is driven by supplying power to the motor by mounting the battery in a form of a battery set .

In such an electric vehicle, a circuit opening / closing device for supplying and disconnecting the electric power stored in the battery to the motor is required as needed. An electromagnetic switch is mainly used as the circuit opening / closing device. The electromagnetic switch is a kind of an electric circuit opening / closing device for mechanically driving and transmitting a current signal using the electromagnet principle. Such an electromagnetic switch is disposed in a junction box of an automobile to supply or cut off power to the motor.

But. When the electromagnetic switch is used as a circuit opening / closing device, the following problems arise. The conventional electromagnetic switch is arranged in the junction box and assembled by screwing on the lower surface of the junction box. Therefore, when assembling the screw of the electromagnetic switch, the pressure due to the rotation torque is concentrated on the assembled portion of the electromagnetic switch, and this portion is deformed and damaged. As described above, when the assembled portion of the electromagnetic switch is deformed, the electromagnetic switch is separated from the junction box, and the power of the battery supplied to the electric vehicle can not be cut off or supplied.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to provide an electromagnetic switch capable of easily fixing an electromagnetic switch in a junction box by a one-touch operation, and a one-touch fixing structure thereof.

In order to achieve the above object, an electromagnetic switch according to the present invention comprises a main body, and a pair of retaining rings provided on the main body and forming a slit and having elasticity.

The fixing ring is detachably installed to the main body, and the main body is provided with a fixing member body, and the fixing ring can be disposed therein. At this time, the fixing member body may be integrally installed with the main body or may be detachably installed to the main body.

Further, the electromagnetic switch according to the present invention is characterized in that the electromagnetic switch is provided in the junction box and is fixed to the junction box. The electromagnetic switch comprises a protrusion formed on the junction box and a slit provided on the body of the electromagnetic switch, And a pair of fixing rings inserted and fixed to the slit.

The protruding portion has a diameter larger than the width of the slit, and a sliding portion is formed at an end of the protruding portion. The protruding portion is inserted into the slit, and a fixing groove is formed along the circumference of the protruding portion. do. At this time, the diameter of the protrusion formed with the fixing groove is equal to the width of the slit, and the size of the fixing groove is equal to the size of the fixing ring.

According to the present invention, since the fixing member is not fixed to the junction box by screwing but is simply coupled by one-touch by elasticity, it is possible to quickly and easily fix the electromagnetic switch.

Further, in the present invention, since no rotational torque is applied by screwing, it is possible to prevent defects due to deformation of the junction box and the electromagnetic switch main body.

1A and 1B are views showing the structure of an electromagnetic switch according to a first embodiment of the present invention;
2 is a view showing a structure of an electromagnetic switch main body according to a first embodiment of the present invention.
3 is an enlarged view of area A in Fig.
4A and 4B are views showing the structure of the protrusion of the junction box according to the first embodiment of the present invention, respectively.
5A and 5B are views showing the structure of a fixing member according to the first embodiment of the present invention, respectively.
6A and 6B are views showing a structure in which a projection according to the first embodiment of the present invention is fixed to a fixing member;
7A to 7C are front views showing that the electromagnetic switch is fixed to the vertical box.
8A to 8C are plan views showing that the electromagnetic switch is fixed to the vertical box.
9 is a view showing a structure of a fixing member of an electromagnetic switch according to a second embodiment of the present invention.
10A and 10B are views showing a structure in which a projection according to a second embodiment of the present invention is fixed to a fixing member.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1A to 1C are views showing the structure of an electromagnetic switch according to the present invention, wherein FIG. 1A is a perspective view and FIG. 1B is a side view.

1A and 1B, an electromagnetic switch 100 according to the present invention is provided on both sides of an electromagnetic switch main body 103 and an electromagnetic switch main body 103, and is assembled to a lower surface 190 of a junction box And a fixing member 160.

Although not shown in the drawings, the electromagnetic switch main body 103 is connected to a circuit set disposed in a junction box of an automobile to supply or cut off power supplied from the battery to the motor.

A fixing hole is formed in the fixing member 160 and a protrusion 194 is formed in the junction box 190. The protrusion 194 is inserted into the fixing hole in a state where the fixing hole and the protrusion 194 are aligned, The electromagnetic switch main body 103 is assembled to the junction box 190.

The fixing member 160 is attached to the side wall of the electromagnetic switch main body 103. At this time, the fixing member 160 may be integrally formed with the main body 103 or may be detachably attached thereto.

2 is a view showing a structure of an electromagnetic switch main body 103 according to the present invention. 2, the electromagnetic switch main body 103 includes a housing 132 and a yoke 130 at a lower portion of the housing.

A fixed contact 134, a movable contact 136, a shaft 138, and a contact spring 148 are provided in the housing 132. At this time, the housing 132 extends to the lower side of the yoke 130 and comes into contact with the upper surface of the yoke 130, and contacts the fixed contact 134, the movable contact 136, the shaft 138 and the contact spring 148 Seal it. The housing 132 is preferably made of a material such as ceramic that has heat resistance and wear resistance and is easy to mold. The fixed contact 134 and the movable contact 136 may be made of a highly conductive metal such as copper.

A screw hole 134a is formed in the fixed contact 134 so that a cable or a bus bar 150 for transmitting current to the load side is fastened to the fixed contact 134 by a screw 152.

The fixed contact 134 is disposed on the upper portion of the housing 132 and is connected to the motor and various parts of the electric vehicle. The movable contact 136 moves in the vertical direction and contacts or separates from the fixed contact 134, Or to supply or block the load. On the other hand, the contact pressure spring 148 maintains the contact state with a pressure equal to or higher than a certain level when the movable contact 136 contacts the fixed contact 134 due to elasticity.

In the yoke 130, an electric actuator is disposed. The electric actuator includes an exciting coil 142, a stator 143, a mover 146, a return spring 144, and a shaft 138 passing through the case 130 along the axial direction from the top.

The exciting coil 142 is formed in a cylindrical shape to form an empty space therein and generates electromagnetic force by an electrical signal to generate a driving force between the stator 143 and the moving element 146. The stator 143 is connected to the exciting coil (142). The mover 146 is disposed in a cylindrical shape below the stator 143 of the vacant space inside the exciting coil 142. The stator 143 and the mover 146 may be formed of a magnetic core.

The mover 146 is also referred to as an armature. The mover 146 is cylindrical and has a through-hole formed along the central axis thereof, so that the other end of the shaft 138 is fixedly inserted. The mover 146 is moved upward by the electric power generated by the exciting coil 142 and the upward motion of the mover 146 is transmitted to the movable contact 136 through the shaft 138, The contact 136 is moved up and down.

The shaft 138 passes through the center of the stator 143, the return spring 144 and the mover 146 through a through hole (not shown) formed on the upper surface of the yoke 130 in the axial direction, 148 and the movable contact 136, respectively. Accordingly, as the mover 145 moves by the electromagnetic force, the shaft 138 moves upward, and the movable contact 136 moves upward by the movement of the shaft 138 to move the fixed contact 134 .

Fig. 3 is an enlarged view of region A of Fig. 1, and is a cross-sectional view showing a fixing structure of an electromagnetic switch according to the present invention.

3, protrusions 194 are formed on the lower surface of the junction box 190. Fixing members 160 are installed on both sides or four sides of the substantially rectangular rectangular shape of the electromagnetic switch main body 103 The projection 194 of the junction box 190 is inserted into a slit between a pair of fixing rings 164a and 164b disposed inside the fixing member 160 so that the electromagnetic switch is fixed to the junction box 190. [

The protrusion 194 is formed in a cylindrical shape made of a metal or the like and is installed on a base 192 inserted into the lower surface of the junction box 190. At this time, the base 192 may be formed of metal or the like and inserted into the junction box 190, like the protrusion 194. Of course, the protrusion 194 may be installed in the junction box 190 directly.

The fixing member 160 is composed of a body 162 and fixing rings 164a and 164b inserted and fixed in the body 162. [ At this time, an internal space is formed in the body 162 to fix the fixing rings 164a and 164b. At this time, a part of the fixing rings 164a and 164b (for example, the fixing rings 164a and 164b) And the like) are firmly fixed to the body 162. [

3, the body 162 may be integrally formed with the electromagnetic switch main body 103, but may be detachably mounted to the electromagnetic switch main body 103. As shown in FIG. The fixing rings 164a and 164b may be insert-mounted with the body 162 of the fixing member 160 but may be removably installed and fixed from the outside of the body 162 during assembly. .

The protrusions 194 are inserted into the slits between the fixing rings 164a and 164b so that the fixing rings 164a and 164b and the protrusions 194 are engaged and the fixing rings 164a and 164b And the protrusion 194, the electromagnetic switch is fixed to the junction box 190. Since the pair of fixing rings 164a and 164b are made of a metal or the like and have a resiliency when the protrusions 194 are inserted into the slits between the fixing rings 164a and 164b, (164a, 164b) are hooked and engaged. Therefore, the electromagnetic switch is fixed to the junction box 190 by the simple combination of the one-touch fixing rings 164a, 164b and the protruding portion 194.

When the electromagnetic switch is fixed to the junction box 190, holes are formed in the lower surface of the junction box and the fixing member 160 of the electromagnetic switch and the fixing member 160 is fixed to the junction box 190 by bolts and nuts, . Therefore, since the operator has to screw the bolts by screwing the bolts and the nuts, the joining process between the electromagnetic switch and the junction box 190 is time-consuming and consumes much by hand.

Further, since the conventional electromagnetic switch is fixed to the junction box by a mechanical coupling such as a screw connection, a mechanical rotation torque is applied when the junction box 190 and the electromagnetic switch main body 103 are engaged, The junction box 190 and the electromagnetic switch 103 generate stress, and this stress deforms the junction box 190 and the electromagnetic switch main body 103. Therefore, the electromagnetic switch main body 103 threadedly coupled to the junction box 190 is deformed to lower the coupling force, and as a result, the problem that the electromagnetic switch is moved in the junction box 190 or even separated from the junction box 190 .

On the other hand, in the present invention, the fixing member 160 is not fixed to the junction box 190 by screwing but is simply coupled by one-touch by elasticity, so that the electromagnetic switch can be quickly and easily fixed . In addition, in the present invention, since no rotational torque is applied by screwing, it is possible to prevent defects due to deformation of the junction box 190 and the electromagnetic switch main body 103.

4A is a view showing an example of a junction box 190 in which a protrusion 194 to which an electromagnetic switch according to the present invention is fixed is formed.

4A, a base 192 made of metal or the like is inserted and fixed to the junction box 190, and a protrusion 194 is installed on the base 192. At this time, the protrusion 194 may be integrally formed of the same metal as the base 192.

The protruding portion 194 is formed in a cylindrical shape having a predetermined diameter r1, and a sliding portion 194a inclined at a predetermined angle is formed at an end portion thereof. The protruding portion 194 is a portion inserted into the slit between the fixing rings 164a and 164b of the fixing member 160 when the fixing member 160 is assembled and fixed to the junction box 190. The sliding portion 194a The fixing rings 164a and 164b of the fixing member 160 slide while the protrusions 194 are inserted so that the protrusions 194 can be easily inserted into the slits of the fixing member 160. [

Although the sliding portion 194a is inclined at an angle of a predetermined angle formed by chamfering the circumference of the protruding portion 194 along the circumference of the circular cross section of the protruding portion 194, A concave elliptical or convex elliptical shape having a predetermined angle with respect to the optical axis.

A fixing groove 196 is formed along the circumference of the protrusion 194 in a region spaced apart from the end surface of the protrusion 194 by a predetermined distance. The diameter r2 of the fixing groove 196 is formed to be smaller than the diameter r1 of the protrusion 190 (r1 > r2), and a concave groove is formed inward. When the protruding portion 194 is inserted into the fixing member 160 to fix the fixing member 160 to the junction box 190, the fixing groove 160 of the fixing member 160 164a and 164b are inserted and the fixing member 160 is firmly fixed to the junction box 190. [

4B is a view showing another example of the junction box 190 formed with the protrusion 194 to which the electromagnetic switch according to the present invention is fixed.

As shown in Fig. 4B, in this structure, the protrusion 194 is detachably installed from the junction box 190. Fig. That is, the base 192 fixed to the inside of the junction box 190 has a hole 193 through which the protrusion 194 is inserted, and a female screw 193a is formed inside the hole 193. A male screw 194b is formed in a lower region of the protrusion 194 so that the protrusion 194 is inserted into the hole 193 of the junction box 190 and screwed thereto so that the protrusion 194 is inserted into the junction box 190, As shown in FIG. At this time, the protrusion 194 is formed with a sliding portion 192a and a fixing groove 196. [

5A and 5B are views showing a structure of a fixing member 160 of an electromagnetic switch according to an embodiment of the present invention, wherein FIG. 5A is a plan view and FIG. 5B is a side view.

As shown in FIGS. 5A and 5B, the body 162 of the fixing member 160 is formed of a generally cuboid or rectangular parallelepiped, and a space 163 is formed therein. A retaining ring 164 is inserted in the space 163.

At this time, the fixing ring 164 may be integrally formed with the body inside the body 162 when the fixing member 160 is manufactured, and may be inserted and fixed in the space 163 through the opening after the body 162 is manufactured It is possible. The fixing rings 164a and 164b are each formed in a cylindrical shape and disposed at mutually spaced intervals, and a slit 165 is formed between the pair of fixing rings 164a and 164b. The protrusion 194 of the junction box 190 is inserted into the slit 165 when the fixing member 160 is fixed to the junction box 190.

The distance d1 between the fixing rings 164a and 164b, that is, the width d1 of the slit 165 is smaller than the straightness r1 of the protrusion 194 (d1 <r1) the fixing rings 164a and 164b are fixed to the protrusions 194 when the protrusions 194 are fixed to the slits 165 between the fixing rings 164a and 164b And is located in the fixing groove 196.

Figs. 6A and 6B are diagrams showing that the fixing member 160 is fixed to the junction box 190. Fig. 6A is a plan view and Fig. 6B is a cross-sectional view.

6A and 6B, when the fixing member 160 is fixed to the junction box 190, the protrusion 194 of the junction box 190 is fixed to the fixing ring 164a The fixing rings 164a and 164b are inserted into the fixing grooves 196 of the protrusions 194 and the diameter of the fixing rings 164a and 164b is larger than the diameter of the fixing holes 164a and 164b, The fixing rings 164a and 164b are inserted into the fixing grooves 196 and are firmly fixed.

Therefore, when the electromagnetic switch main body 103 is assembled to the junction box 190, the electromagnetic switch main body 103 is firmly fixed and does not flow due to an external impact or the like.

As described above, in the present invention, the projection 194 of the junction box 190 is inserted into the slit 165 between the fixing rings 164a and 164b of the fixing member 160, so that the electromagnetic switch main body 103 is inserted into the junction box 190, so that it is possible to assemble quickly by one-touch without the need for a mechanical connection such as a screw connection.

Hereinafter, a method of fixing the electromagnetic switch main body 103 to the junction box 190 will be described in detail with reference to the accompanying drawings.

Figs. 7A to 7C and Figs. 8A to 8C are views showing a method of fixing the electromagnetic switch main body 103 to the junction box 190. Fig.

First, as shown in Figs. 7A and 8A, the electromagnetic switch main body 103 is disposed above the set position of the junction box 190. Fig. At this time, the slit 165 formed by the fixing rings 164a and 164b inside the fixing member 160 attached to the electromagnetic switch main body 103 is aligned with the protrusion 194 provided at the lower portion of the junction box 190 .

7B and 8B, when the fixing member 160 is lowered while the slit 165 and the protrusion 194 of the fixing member 160 are aligned with each other, The end of the projection 194 comes into contact with the fixing rings 164a and 164b of the slit 165 of the fixing member 160. [ At this time, the protrusion 194 is not inserted into the slit 165 because the width of the slit 165, that is, the distance between the fixing rings 164a and 164b is smaller than the diameter of the protrusion 194, When the pressure is applied to the fixing member 160 in the downward direction, the fixing rings 164a and 164b are moved along the sliding portions 194a of the protrusions 194 It moves.

The fixing rings 164a and 164b are made of a ring-shaped metal having a small diameter, and thus have elasticity. Therefore, when the retaining rings 164a and 164b are inserted into the slit 165 along the sliding portion 194a of the protruding portion 194, the resilience of the retaining rings 164a and 164b causes the retaining rings 164a and 164b Is positioned on the circumferential sidewall of the protruding portion 194.

When the pressure is continuously applied to the fixing member 160 in the downward direction in this state, the fixing rings 164a and 164b are lowered along the wall surfaces of the fixing rings 164a and 164b to be fixed to the fixing grooves 194b of the protrusion 194, The fixing rings 164a and 164b are inserted into the fixing grooves 194b as shown in Figures 7C and 8C. At this time, since the fixing rings 164a and 164b and the fixing groove 194b are formed in the same shape, the fixing rings 164a and 164b are firmly fixed in the fixing groove 194b and do not flow. As a result, the electromagnetic switch main body 103 is stably and firmly fixed to the inside of the junction box 190.

As described above, in the present invention, the electromagnetic switch main body 103 is stably and firmly fixed in the junction box 190 by the one-touch coupling using the elasticity of the components, rather than using a separate mechanism such as a screw connection. It is possible to quickly and easily combine to shorten the manufacturing process and reduce the manufacturing cost.

Further, since no mechanical force for screw connection such as rotation torque is applied to the component, it is possible to prevent defects due to deformation of the main body of the electromagnetic switch, the box, and the like.

9 is a view showing a fixing member 260 of an electromagnetic switch according to another embodiment of the present invention.

As shown in Fig. 9, the fixing member 260 of this embodiment is composed of a pair of fixing rings 264a and 264b. That is, the pair of fixing rings 264a and 264b, which are the fixing members 260 of this embodiment, are directly installed on the electromagnetic switch main body 203 and are exposed to the outside. The slits 265 are formed in the fixing member 260 by the pair of fixing rings 264a and 264b. At this time, the slit 265 is closed at one side by the fixing rings 264a and 264b and the other side is opened by the fixing rings 264a and 264b. However, since both sides of the slit 265 are fixed to the fixing rings 264a and 264b, The slit 265 may form a closed curved surface.

Although the opening of the slit 265 is formed in the direction toward the outside of the electromagnetic switch main body 203 so that the longitudinal direction of the slit 265 is perpendicular to the wall surface of the electromagnetic switch main body 203, 265 may be formed parallel to the main body 203.

10A and 10B are views showing a fixing structure of an electromagnetic switch according to another embodiment, wherein FIG. 10A is a plan view and FIG. 10B is a sectional view.

10A and 10B, when the electromagnetic switch main body 203 is fixed to the junction box 290, the protrusion 294 of the junction box 290 is fixed to the stationary ring (not shown) mounted on the electromagnetic switch main body 203 The fixing rings 264a and 264b are inserted into the fixing grooves 296 of the protrusions 294 so that the fixing rings 264a and 264b are inserted into the fixing grooves 296 . As a result, even in this embodiment, the electromagnetic switch main body 203 is fixed to the junction box 290, so that the electromagnetic switch main body 203 does not flow due to an external impact or the like.

While the present invention has been described with reference to a specific structure for illustrative purposes, the present invention is not limited to the specific structure described above. For example, in the above detailed description, the fixing ring is formed in the fixing member and the protrusion is formed in the junction box, but the fixing ring may be formed in the junction box and the protrusion may be formed in the fixing member.

In addition, various modifications of the present invention and structures that can be easily created based on the present invention should also be included in the scope of the present invention. Accordingly, the scope of the present invention should not be determined by the foregoing detailed description, but should be determined by the appended claims.

100: electromagnetic switch 103: electromagnetic switch main body
160: fixing member 164a, 164b:
165: slit 190: junction box
194: protruding portion 194a: sliding portion
196: Fixing groove

Claims (11)

An electromagnetic switch fixed to a junction box having a protrusion,
main body;
A fixing member provided on the main body; And
And a pair of retaining rings disposed inside the retaining member and having elasticity to form a slit into which the projection of the junction box is inserted. The electromagnetic switch according to claim 1, further comprising a fixed contact, a movable contact, a shaft, and a contact spring disposed in the main body. The electromagnetic switch as set forth in claim 1, characterized in that the stationary ring is detachably mounted on the main body The electromagnetic switch according to claim 3, wherein the fixing member body is integrally provided with the main body. The electromagnetic switch according to claim 3, wherein the fixing member body is detachably mounted to the main body. The electromagnetic switch according to claim 1, wherein the retaining ring has elasticity. An electromagnetic switch provided in a junction box and fixed to a junction box,
A protrusion formed on the junction box;
And a pair of retaining rings provided in the main body of the electromagnetic switch and formed with slits so that the protrusions are inserted and fixed to the slits. The fixing structure of an electromagnetic switch according to claim 7, wherein a diameter of the protrusion is larger than a width of the slit. The fixing structure for an electromagnetic switch according to claim 8, further comprising a sliding portion formed at an end of the protruding portion, the protruding portion being inserted into the slit by sliding movement of the fixing ring. The fixing structure for an electromagnetic switch according to claim 7, further comprising a fixing groove formed along a circumference of the protrusion and into which a fixing ring is inserted. The fixing structure of an electromagnetic switch according to claim 10, wherein a diameter of the protrusion having the fixing groove is equal to a width of the slit, and a size of the fixing groove is equal to a size of the fixing ring.

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