KR100757246B1 - Contact point terminals of ignition key switch - Google Patents

Abstract

A contact point terminal of an ignition key switch is provided to reduce sparks by attaching a contact point horizontally, thereby improving the durability in spite of an excessive contact capacity. A contact point terminal of an ignition key switch includes a body(40), a plurality of connectors(51,52,53,54,55,56), leaf springs(31,32,33,34), upper plates(11,12), and a circular cam(20). The connectors are inserted into connector holes formed on both sides of the bottom surface of a top-opened accommodation part of the body. The leaf springs are mounted to the bottom surface of the accommodation part and are electrically connected to a part of the connectors. A variable contact point is formed in an operation part protruding upward. The upper plate is mounted on the upper part of the accommodation part and is electrically connected to the other connectors. The upper plate includes a fixed contact point horizontally attached to or separated from the variable contact point. A plurality of radial protrusions is formed in the circular cam.

Description

Contact Point Terminals of Ignition Key Switch

1 is an exploded view of a conventional ignition key switch,

Figure 2 is a substitute photograph showing the state of the contact lost by the spark of the conventional ignition key switch

3 is an exploded perspective view of a contact terminal according to the present invention;

4 is an assembled perspective view of FIG. 3;

5A to 5C are a perspective view and a main portion perspective view and a terminal distribution diagram in a startup off state,

6a to 6d are stepwise main perspective views in the ACC-> ON-> START-> ON state.

<Description of the symbols for the main parts of the drawings>

11, 12: top 20: round cam

31 ~ 34: leaf spring 40: main body

41: partition 42: receiving portion

44: connector hole 44: support wall

51 to 56: connector 60: circular cam support member

61: upper buddy 62: converdy

63: ring 70: fixed point

The present invention relates to a contact terminal of an ignition key switch, and more particularly, a contact that can improve durability by reducing sparks generated from a contact by converting from a conventional sliding contact method to a horizontal contact method using a circular cam and a leaf spring. It is about a terminal.

The ignition key set, which is generally used for starting the car, inserts the keys from the OFF position, moves them in the ACC position, the ON position, and the START position, and performs each function.The driver moves the keys to the START position. When the engine is started by rotating, even if the key is left, the key is automatically reversed to the ON position.

1 is an exploded view of a conventional ignition key switch, and includes a connector 1, a terminal portion 2, a rotation shaft 3, a rotation shaft case 4, and a switch main body 5. As shown in FIG.

The terminal parts 2a and 2b are engaged with each other and rotate to move to the OFF, ACC, ON, and START positions through key rotation, and operate while the contacts of the ignition key switch are attached.

However, as the various electronic components requiring power supply to the vehicle are added, the capacity of each contact point of the ignition key switch is increased, thereby sparking the contact point of the terminal part 2 which operates in a sliding manner, and thus the durability life is significantly reduced. There was a problem.

That is, conventionally, the contact method is a sliding contact method in which each contact is engaged while the terminal portion 2 rotates. In this contact method, since sparks frequently occur, when the contact current (capacity) is 17A as shown in FIG. The contact is lost in about 14,000 times, well below the target endurance life of 70,000 times.

To prevent this, the relay current is added to each electronic component to reduce the contact current to 10A to satisfy the target endurance life of 70,000 times, but rely only on the relay to prolong the endurance life of the ignition key switch. It is impossible to do this, and adding a relay every time an electronic component is added, the cost increases and the circuit is complicated.

The present invention has been made to solve the above-described problems, the contact using the circular cam and the leaf spring in the horizontal contact to the contact can be significantly reduced spark between the contacts and improve the durability of the contact of the ignition key switch The purpose is to provide a terminal.

The contact terminal of the ignition key switch according to the embodiment of the present invention for achieving the above object, the main body is formed so that the receiving portion is opened upward by the partition wall and the support wall formed with a shaft hole to the rear side of the receiving portion protrudes Wow,

A plurality of connectors inserted through connector holes formed at both sides of the bottom of the accommodation portion;

A leaf spring mounted on the bottom surface of the receiving portion through the open upper side and electrically connected to some of the plurality of connectors and arc-shaped bent to form a variable contact at a movable portion protruding upward;

An upper plate mounted on an upper surface of the accommodating part in which the leaf spring is not mounted and electrically fixed to the other connector, and having a fixed contact formed horizontally at a position corresponding to the variable contact formed on the leaf spring;

A plurality of radial protrusions having a size corresponding to an angle rotated on the outer periphery of the shaft located across the middle portion of the body through the axial hole of the support wall is formed, 45 to the position of OFF-ACC-ON-START-ON It includes a circular cam for attaching or detaching the variable contact and the fixed contact by the combination of the protrusion having a size according to the angle each time the rotation.

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

3 is an exploded perspective view of a contact terminal according to the present invention, Figure 4 is an assembled perspective view according to FIG.

As shown, the upper plate (11, 12), the circular cam 20, the leaf spring (31 ~ 34), the main body 40, the connector 51 ~ 56 and comprises a circular cam support member 60 .

The main body 40 is formed by separating the four receiving portions 42a to 42d, which are opened upward by the partition 41, and both sides of the bottom surfaces of the second, third and fourth receiving portions 42b, 42c and 42d from the front. The connector hole 43 into which the connector 50 is inserted is drilled, and the partition 41 has a semicircular groove 41a formed therein.

A support wall 44 having a shaft hole 44a formed protrudes from the rear side of the fourth accommodating portion 42d, and fitting grooves 44b are formed at both upper sides of the support wall 44.

Six connectors 51 to 56 pass through the connector holes 43 formed at both sides of the bottom of the second, third and fourth accommodation portions 42b, 42c, and 42d, and thus, four connectors 51 to 54 having short double legs. ) Is located at the bottom of the second, third and fourth accommodating portions 42b, 42c and 42d, and the upper part of the two long legs connectors 55 and 56 is the second and third accommodating portions 42b and 42c. It is located on the upper surface.

More specifically, the four connectors 51 to 54 have a right side of the second accommodating portion 42b, a left side of the third accommodating portion 42c, a left side of the fourth accommodating portion 42d, and a fourth accommodating portion 42d. Are respectively located on the right side of the head), and the two connectors 55 and 56 are located on the left side of the second accommodating portion 42b and the right side of the third accommodating portion 42c.

Four leaf springs 31 to 34 mounted on the bottom surfaces of the receiving portions 42b, 42c, and 42d and protruding upward are fixed to the four connectors 51 to 54, respectively, and the receiving portions 42b and 42c. The two upper plates 11 and 12 mounted on the upper surface of the upper plate 11 and 12 are fixed to the two connectors 55 and 56 so that the leaf springs 31 to 34 and the upper plates 11 and 12 are electrically connected to the connectors 51 to 56. Connected.

The leaf springs 31 to 34 are fixed parts 30a having connector holes 30aa formed therein, and movable parts 30b protruding upward after being bent in an arc shape so as to be bent at one side of the fixed parts 30a. The movable portion 30b is moved to the inside of the receiving portions 42b to 42d by elasticity, and the variable contact 30c is formed inside the movable portion 30b.

The leaf springs 31 to 34 are disposed on the right side of the second accommodating portion 42b, the left side of the third accommodating portion 42c, the left side of the fourth accommodating portion 42d, and the bottom of the right side of the fourth accommodating portion 42d. In the positioned state, respectively, it is fixed to the connectors 51 to 54 by fixing points 70 to the connectors 51 to 54 inserted through the connector holes 30aa of the fixing part 30a.

The two upper plates 11 and 12 form different shapes, and the first upper plate 11 has a fixing part 11a having a connector hole 11aa and an upper side, an inner side, and a lower side from the fixing part 11a. It consists of a mounting portion 11b bent at a right angle 3 and a vertical bending portion 11d formed below the connecting portion 11c extending horizontally rearward from the mounting portion 11b, and horizontally forward at the mounting portion 11b. Extends to form a converging hole 11e.

On one side of the mounting portion 11b and the vertical bending portion 11d on the one side of the mounting portion (11d) is a fixed contact (10a) is attached or falling horizontally with the variable contact (30c).

The first top plate 11 is located at the fixing point 70 in the connector 55 inserted through the connector hole 11aa formed in the fixing portion 11a in a state located on the left upper surface of the second accommodating portion 42b. Is fixed by.

Next, the second top plate 12 includes a fixing part 12a having a connector hole 12aa formed therein, a connecting part 12b that is bent vertically from the fixing part 12a, and laterally extended horizontally, and the connecting part 12b. It consists of a mounting portion (12c) bent in the rear and both sides downward.

On both vertical surfaces of the mounting portion 12c, the fixed contact 10a is formed to fall or fall horizontally with the variable contact 30c.

In addition, the fitting protrusions 12d are formed on both sides of the mounting portion 12c on both sides of the mounting portion 12c, and are fitted into the fitting grooves 44b formed on the support wall 44 of the main body 40.

The second top plate 12 is located at the fixing point 70 in the connector 56 inserted through the connector hole 12aa formed in the fixing part 12a in a state located on the upper right side of the third accommodating part 42c. Is fixed by.

The circular cam 20 positioned across the middle portion of the main body 40 through the shaft hole 44a of the support wall 44 has a shaft 21 having a step with different core diameters and is a semicircular groove of the partition wall 41. It is supported by (41a), the outer periphery of the shaft 21 is formed with five radial projections (22a ~ 22e) having a size corresponding to the rotation angle of the circular cam 20.

That is, the first and second protrusions 22a and 22b intermittently move the first leaf spring 31 positioned in the second accommodating part 42b and are formed at a 45 degree angle, and the third protrusion 22c is provided. ) Is intermittent to the movement of the second leaf spring 32 located in the third receiving portion (42c) and formed a size of 90 degrees, the fourth projection 22d is located in the fourth receiving portion (42d) While interfering with the movement of the third leaf spring 33 is formed to a size of 90 degrees, the fifth projection 22e intermittently moves the fourth leaf spring 34 positioned in the fourth accommodation portion 42d. It is formed to a size of 135 degrees.

At this time, the second protrusion 22b shows an angle difference of 90 degrees counterclockwise from the center of the first protrusion 22a at the center of the second protrusion, and the third and fourth protrusions 22c and 22d are the first protrusion 22a. ) And the angle difference of 90 degrees in the clockwise direction, and the fifth protrusion 22e shows an angle difference of 45 degrees in the counterclockwise direction with the first protrusion 22a.

The shaft tip portion 21a of the circular cam 40 has a pointed cone shape and is located in the first accommodating portion 42a.

The protruding portions 22a, 22c to 22e push the movable portions 30b of the four leaf springs 31 to 34 to the outside in the OFF state, and the fixed contact 10a of the variable contact 30c and the upper plates 11 and 12 is provided. Is fixed to the variable contact 30c by a combination of protrusions 22a to 22e having a size corresponding to an angle each time the circular cam 20 rotates by 45 degrees to the position of ACC-ON-START-ON. The contact 10a is stuck or dropped.

The description thereof will be described later with reference to FIG. 5.

The circular cam support member 60 supporting the rotation of the circular cam 40 smoothly is inserted into and mounted into the mounting portions 11b and 12c formed on the first and second upper plates 11 and 12, and the cone toward one side. The upper buddy 61 in which the buddy hole 61a is formed, and the through buddy holes 61a and 11e formed in the upper buddy 61 and the first upper plate 11 are coupled to each other and the ring hole 62a is lowered. A ring 63 which is formed to the formed converging 62 and the ring hole 62a of the converging 62 and the front end portion 21a of the shaft 21 is fitted inward to allow the circular cam 20 to rotate smoothly. Is done.

In each of the above-described components, the second, third and fourth accommodation portions 42b, 42c and 42d of the main body 40 have connectors 51 to 56 at the bottom of the second, third and fourth accommodation portions 42b, 42c and 42d. Inserted through both sides of the connector hole 43, four of the connectors (51 to 54) of the leaf springs (31 to 34) at the bottom of the second, third, fourth receiving portion (42b, 42c, 42d) It is coupled to the leaf springs 31 to 34 by the fixing point 70 in the state inserted through the connector hole 30aa formed in the government 30a.

The other two connectors 55 and 56 are formed in the connector holes 11aa and 12aa formed in the fixing portions 11a and 12a of the first and second upper plates 11 and 12 on the upper surfaces of the second and third accommodation portions 42b and 42c. In the inserted state through) is fixed to the upper plate (11, 12) by the fixing point 70.

Thus, the connectors 51 to 56 are electrically connected to the leaf springs 31 to 34 and the upper plates 11 and 12.

Here, the four connectors 51 to 54 together with the leaf springs 31 to 34 are the right side of the second accommodating portion 42b, the left side of the third accommodating portion 42c, and the left side of the fourth accommodating portion 42d. , Respectively located on the right side of the fourth accommodating portion 42d, and the two connectors 55 and 56 are connected to the left side of the second accommodating portion 42b together with the fixing portions 11a and 12a of the upper plates 11 and 12. It is located on the right side of the third accommodating portion 42c.

At this time, the fixed contact (10a) formed on one vertical surface of the mounting portion (11b) of the first top plate 11 is a fixed contact formed on the upper right of the second receiving portion (42b), the vertical bent portion (11d) of the first top plate (11d) 10a is a left upper portion of the third accommodating portion 42c and a fixed contact 10a formed on both vertical surfaces of the mounting portion 12c of the second upper plate 12 is a leaf spring on the upper left and right sides of the fourth accommodating portion 42d. It is located so as to correspond to the variable contact (30c) of (31 ~ 34).

The fitting protrusion 12d of the second upper plate 12 is fitted into the fitting groove 44b formed at both upper sides of the support wall 44 of the main body 40.

On the other hand, the circular cam 20 is inserted through the shaft hole (44a) of the support wall 44 is the shaft end of the circular cam (20) across the plate spring (31 ~ 34) and the top plate (11, 12) ( 21a) is supported to rotate smoothly by the circular cam support member 60.

The first and second protrusions 22a and 22b formed on the circular cam 20 are movable parts of the first plate spring 31 positioned on the right side of the second accommodating part 42b according to the rotation of the circular cam 20. 30b) is pushed outward, and the third projection part 22c moves the movable part 30b of the second leaf spring 32 located on the left side of the third accommodating part 42c outward as the circular cam 20 rotates. The fourth and fifth protrusions 22d and 22e are movable parts of the third and fourth leaf springs 33 and 34 positioned on the left and right sides of the fourth accommodation portion 42d as the circular cam 20 rotates. Pushes 30b) outward.

5A to 5C are a perspective view, a main part perspective view, and a terminal distribution diagram in a start-off state.

5B is a view in which the main body 40, the converging 62, and the ring 63 are deleted to show the mutual relationship between the circular cam 20 and the leaf spring 30. The protrusions 22a, 22c to 22e of the cam 20 push the leaf springs 31 to 34 to the outside so that the variable contacts 30c of the leaf springs 31 to 34 and the first and second upper plates 11 and 12 are formed. The fixed contact 10a does not stick.

In FIG. 5C, terminals B1 and B2 are always connected to the connectors 55 and 56, and the reason why the top plate is divided into the first top plate 11 and the second top plate 12 is as shown in the circuit diagram of Table 1 below. To divide ON2, B1 and B2.

6A to 6D are stepwise main perspective views in an ACC-> ON-> START-> ON state.

In the OFF state, as shown in FIG. 5B, the movable parts 30b of the leaf springs 31 to 34 are pushed outward by the protrusions 22a, 22c, and 22e of the circular cam 20, so that the fixed contact 10a and the variable contact are closed. All of the 30c remain apart.

In this state, as shown in FIG. 6A, when the circular cam 20 rotates 45 degrees counterclockwise, the circular cam 20 is in an ACC state.

In the ACC state, as the first protrusion 22a of the circular cam 20 rotates, the movable portion 30b of the first leaf spring 31 pushed by the first protrusion 22a moves inward by elasticity. The variable contact 30c of the leaf spring 31 comes into contact with the fixed point 10a of the first upper plate 11.

As shown in FIG. 6B, when the circular cam 20 is rotated 45 degrees counterclockwise again, the circular cam 20 is turned on.

The movable parts of the second and third leaf springs 32 and 33 which are pushed by the third and fourth protrusions 22c and 22d while the third and fourth protrusions 22c and 22d of the circular cam 20 rotate in the ON state. 30b moves inward by elasticity, whereby the variable contact 30c of the second and third leaf springs 32 and 33 is brought into contact with the fixed contact 10a of the first and second upper plates 11 and 12.

As shown in FIG. 6C, when the circular cam 20 is rotated 45 degrees counterclockwise again, the START state is obtained.

In the START state, as the fifth protrusion 22e rotates, the movable portion 30b of the fourth leaf spring 34 pushed by the fifth protrusion 25e moves inwardly by elasticity, whereby the fourth plate spring 34 ), The variable contact 30c is attached to the fixed contact 10a of the second upper plate 12.

At the same time, the variable contact 30c of the first leaf spring 31 and the fixed contact 10a of the first upper plate 11 fall while the second protrusion 22b is rotated again.

This is because, as shown in Table 1, the ACC should be separated from the start.

As shown in FIG. 6D, when the circular cam is rotated 45 degrees in the reverse clockwise direction, the circular cam is turned on as shown in FIG. 6B.

In the conventional sliding contact structure, the spark frequently occurs and the contact capacity increases, so that the durability drops sharply, but according to the structure of the present invention using the circular cam and the leaf spring, the contact is horizontally attached and the spark is significantly reduced, so durability is maintained even in excessive contact capacity. Can be improved.

Claims (11)

A main body which is formed to be separated from the receiving part which is opened upward by the partition wall, and has a supporting wall formed with a shaft hole toward the rear side of the receiving part; A plurality of connectors inserted through connector holes formed at both sides of the bottom of the accommodation part; A leaf spring mounted on the bottom surface of the receiving portion through the open upper portion and electrically connected to some of the plurality of connectors and arc-shaped bent to form a variable contact at a movable portion protruding upward; An upper plate mounted on an upper surface of the accommodating part in which the leaf spring is not mounted and electrically fixed to the other connector, and having a fixed contact formed horizontally at a position corresponding to the variable contact formed on the leaf spring; A plurality of radial protrusions having a size corresponding to an angle rotated on the outer periphery of the shaft located across the middle portion of the body through the axial hole of the support wall is formed, 45 to the position of OFF-ACC-ON-START-ON Contact terminal of the ignition key switch, characterized in that consisting of a circular cam for attaching or falling off the variable contact and the fixed contact by a combination of the protrusion having a size according to the angle each time the rotation. The method of claim 1, A contact terminal of the ignition key switch, characterized in that the partition wall is formed with a semi-circular groove is supported the shaft of the circular cam. The method of claim 1, The accommodating part is formed in the first to fourth accommodating part from the front side of the main body, The first to fourth connectors electrically connected to the four leaf springs are respectively located on the right side of the second accommodation portion, the left side of the third accommodation portion, the left side of the fourth accommodation portion, and the right side of the fourth accommodation portion, respectively. The fifth to sixth connectors electrically connected to the two upper plates are located at the left side of the second accommodating part and the right side of the third accommodating part, The tip of the shaft is a contact terminal of the ignition key switch, characterized in that located in the center of the first receiving portion. The method of claim 3, wherein The first to fourth plate springs are formed in a connector hole and fixed to be coupled to the connector in a state where the connector is inserted, and bent into an arc so as to bend at one side of the fixing part, and then protrude upward. Contact terminal of the ignition key switch, characterized in that consisting of the movable portion is formed. The method of claim 3, wherein The first and second top plates have different shapes, but the first top plate has a fixing part which is fixed to the connector in a state where the connector hole is formed and the connector is inserted, and three times from the fixing part to the upper side, the inner side and the lower side. A contact terminal of an ignition key switch, comprising: a mounting portion formed at right angles and having a fixed contact point formed at one vertical surface; The method of claim 5, The second upper plate has a connector hole is formed to be fixed to the connector coupled to the connector in the state where the connector is inserted, the connection portion is bent vertically in the fixing portion and laterally extended horizontally, and the rear and both sides downward from the connection portion Contact terminal of the ignition key switch, characterized in that consisting of the bent mounting portion. The method of claim 6, The contact terminal of the ignition key switch, characterized in that the fitting protrusions are formed on both outer sides of the mounting surface of the second upper plate to be fitted into the fitting grooves formed on both sides of the support wall of the main body. The method of claim 6, A contact terminal of the ignition key switch, characterized in that the front end of the shaft is inserted into the circular cam support member to support the rotation of the circular cam. The method of claim 8, The circular cam support member is coupled to penetrate through the upper buddy is inserted into the mounting portion formed on the first and second upper plates and formed with a converdy hole on one side, and through the converging holes formed on the upper buddy and the first upper plate. The contact terminal of the ignition key switch, characterized in that consisting of a ring formed in the ring hole is formed in the lower side, and the ring hole is mounted to the ring hole of the converging and the tip portion of the shaft inward. The method of claim 3, wherein Five protrusions are formed radially on the shaft, The first and second protrusions are formed to have an angle of 45 degrees to control the movement of the first leaf spring positioned in the second accommodation portion, and the third protrusions interfer the movement of the second leaf spring located in the third accommodation portion. The fourth protrusion is formed in the size of the 90 degree angle, the fourth protrusion is formed in the size of the 90 degree angle to interrupt the movement of the third leaf spring located in the fourth accommodation portion, the fifth protrusion is located in the fourth accommodation portion The contact terminal of the ignition key switch, characterized in that formed in the size of 135 degrees to interrupt the movement of the fourth leaf spring. The method of claim 10, The second protrusion has a 90 degree angle difference in the counterclockwise direction with the center of the first protrusion at the center of the second protrusion, and the third and fourth protrusions have a 90 degree angle difference in the clockwise direction with the first protrusion. The projecting portion is a contact terminal of the ignition key switch, characterized in that the first projection showing an angle difference of 45 degrees in the counterclockwise direction.

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