JPH07326407A - Connecting device for connector terminal and electronic circuit - Google Patents

Abstract

PURPOSE:To provide a connecting device the manhour in assembling of which is small by press-fitting a projection made at the other into an engaging hole made at one thereby engaging a lead wire, whose one side leads electrically to an electronic circuit, and a lead wire, whose one end leads electrically to a connector terminal with each other. CONSTITUTION:A housing 11 is provided with a hole 11b where the first lead wire 14 and the second lead wire 15 can be inserted. The lead wire 14 is inserted into the hole 11b of the housing 11, and one end is in contact with the electronic circuit printed at the bottom of the housing 11. The lead wire 15 is press-fit in the hole 1b of the housing 11, and one end projects from the bottom of an opening 11c so as to constitute a connector terminal. The projection 14c of the lead wire 14 engages with the engaging hole 15a of the lead wire 14, and also it is fixed to the housing 11 by an adhesive. Hereby, the lead wire 14 and the lead wire 15 are connected. Accordingly, the connector terminal and the electronic circuit can be connected with small manhour without performing soldering.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of connecting a connector terminal and an electronic circuit.

[0002]

2. Description of the Related Art Conventionally, in a throttle valve opening sensor disclosed in, for example, Japanese Utility Model Publication No. 4-53523, the opening of the throttle valve can be detected by the degree of voltage drop. Within
A circuit board on which a plurality of resistors are printed is arranged,
Further, connector terminals connected to the respective resistors are projected outside the housing.

In a sensor mounted on a vehicle as described above, contact failure due to vibration or the like causes noise, so that the connector terminal and the electronic circuit must be reliably connected, and therefore, conventional soldering is required. Is generally connected by.

[0004]

However, connecting the connector and the electronic circuit by soldering leads to man-hours during assembly.

It is a technical object of the present invention to provide a connecting device for connecting a connector and an electronic circuit with a small number of assembling steps.

[0006]

In order to solve the above-mentioned technical problems, the technical means taken in the invention of claim 1 is to provide an electronic circuit printed on a housing and an electronic circuit electrically connected to the electronic circuit to an external electronic device. In a connecting device for connecting and disconnecting a connector terminal of a connector and an electronic circuit, a first conducting wire having one end electrically connected to the electronic circuit and having an engaging portion formed at the other end, and one end electrically connected to the connector terminal and connected to the other end. A first conductive wire and a second conductive wire that is formed with a mating portion and that engages with the engaging portion of the first conductive wire; and a hole that is formed in the housing and into which the first and second conductive wires can be fitted.
That is, a fitting hole is formed in either one of the engaging portions of the conductive wire, and the protrusion formed in the other remaining portion is press-fitted into the fitting hole.

In order to make it difficult to disengage the first conductive wire and the second conductive wire from each other, it is preferable that the fitting means and the projection have different cross-sectional shapes. .

In order to make it difficult to disengage the first conductive wire and the second conductive wire from each other, the technical means taken in the invention of claim 3 is that the fitting hole and the projection have a polygonal cross-sectional shape and the same shape. It is preferable that both of them are pressed into each other at a position where the corners do not coincide with each other.

It is easy to press the projection into the fitting hole, and
In order to increase the reliability of engagement between the conductive wire and the second conductive wire, the technical means taken in the invention of claim 4 is that the first conductive wire or the second conductive wire on which the protrusion is formed has a fitting hole. It is preferable that the first conductor wire or the second conductor wire, which is formed, be made of a harder material.

According to a fifth aspect of the present invention, a technical means is provided for connecting an electronic circuit printed on a housing and a connector terminal of a connector which conducts to the electronic circuit and connects and disconnects with an external electronic device to the electronic circuit. And a first conducting wire having one end electrically connected to an electronic circuit and having an engaging portion formed at the other end, and one end electrically conducting to a connector terminal and having an engaging portion formed at the other end engaged with an engaging portion of the first conducting wire. And a hole formed in the housing into which the first and second conductors can be fitted, and an electric current is applied to the first and second conductors to weld them.

In order to make it difficult for the first conductor and the second conductor to be disengaged from each other and the first and second conductors from falling off easily, the technical measure usually taken in the invention of claim 6 is the first and second conductors. It is preferable to provide a fixing means for fixing the to the housing.

In order to ensure the sealing between the connector side and the electronic circuit side, in the technical means taken in the invention of claim 7, the fixing means may be an adhesive.

In order to fix the first and second conducting wires to the housing with a small number of steps, the technical means taken in the invention of claim 8 is that the fixing means is at least one of the first and second conducting wires and the housing. It is preferable to include a sandwiching unit formed on one side and sandwiching the other member.

[0014]

According to the invention of claim 1, the first conductor and the second conductor are formed by press-fitting the protrusion formed on the other of the fitting holes formed on one of the first and second conductors.
The conductor wire is connected, and the connector terminal and the electronic circuit are connected via the first and second conductor wires.

According to the second aspect of the present invention, since the fitting hole and the protrusion have different cross-sectional shapes, either the fitting hole or the protrusion is press-fitted in a bent state.

Further, in the invention of claim 3, the fitting hole and the projecting portion have polygonal and identical cross-sectional shapes, and both are press-fitted at positions where the corners do not relatively match each other. Thus, either the fitting hole or the protruding portion is press-fitted in a bent state.

Further, in the invention of claim 4, the first conductor wire or the second conductor wire on which the protrusion is formed is harder than the first conductor wire or the second conductor wire on which the fitting hole is formed. With this configuration, the softer member is flexed and press-fitted by a necessary amount when the projection is press-fitted.

According to the fifth aspect of the present invention, a current is passed through the first conductor and the second conductor, and the Joule heat at this time welds the two to each other, whereby the first conductor and the second conductor are connected to each other, and the connector is connected. The terminal and the electronic circuit are connected via the first and second conducting wires.

Further, in the invention of claim 6, since the first and second conducting wires are fixed to the housing by the fixing means, the first and second conducting wires are respectively provided at two places, the engaging portion and the fixing means. It will be fixed.

Further, in the invention of claim 7, since the fixing means is an adhesive, the connector side and the electronic circuit side can be sealed.

According to the invention of claim 8, the fixing means is provided in at least one of the first and second conducting wires and the housing, and the holding means is provided to hold the other member. It is possible to easily attach and detach the first and second conducting wires.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described with reference to the drawings.

FIG. 1 and FIG. 2 are sectional views of a throttle valve opening sensor which employs the connector terminal / electronic circuit connecting device of this embodiment. Further, in the present embodiment, the connecting device between the connector terminal and the electronic circuit is used for the throttle valve opening sensor, but the present invention is not limited to this and other types of sensors and electronic devices may be used.

As shown in the drawing, the throttle valve opening sensor 10 comprises resin housings 11 and 12, and the housing 11 is press-fitted into a large diameter portion 12a provided in the housing 12 to narrow the O-ring 13. By holding, both are airtightly integrated.

The housing 11 has a catch 11a.
Is integrally molded so that a connector of another electronic device (not shown) can be connected thereto. Also, housing 1
1 is provided with a hole 11b.
The conductor 14 and the second conductor 15 can be inserted. The first conductive wire 14 is inserted into and bonded to the hole 11b of the housing 11, one end (lower side in FIG. 1) contacts the electronic circuit 16 printed on the lower surface in FIG. 1 of the housing 11, and the other end is the second. An engaging portion that engages with the other end of the conductor 15 described later is formed. Here, by fixing the first conducting wire 15 with an adhesive, the gap between the first conducting wire 14 and the housing 11 is sealed, and the moisture that has entered from the connector side enters the housing 12 and the electronic circuit 16 is short-circuited. Is prevented. The second conducting wire 15 is the housing 11
1 is press-fitted into the hole 11b, one end (left side in FIG. 1) projects from the bottom surface of the opening 11c of the housing 11 to form a connector terminal, and the other end engages with the other end (engaging part) of the first conducting wire 14. To form a mating engagement portion. Further, the first conducting wire 14 is fixed to the housing 11 by the adhesive that constitutes the fixing means while engaging with the second conducting wire 15, and is fixed at two places, so that the first conducting wire 14 and the second conducting wire 15 are It is possible to make it difficult to disengage and to make it difficult to drop the first and second conducting wires 14 and 15.

The housing 12 has a boss portion 12b, and an input member 17 interlocked with the rotation shaft of a throttle valve (not shown) is rotatably inserted into the boss portion 12b.
A brush 18 is attached to the upper surface of the input member 17 in the drawing, and the brush 18 is a resistor 1 of the electronic circuit 16.
It slides on 6a.

Reference numeral 19 indicates a spring washer, and 20 indicates a return spring.

The spring washer 19 presses the brush 18 against the resistor 16a with a predetermined pressing force. The return spring 20 has one end fixed to the projection 12c provided on the housing 12 and the other end fixed to the projection 17a provided on the input member 17, and biases the input member 17 toward the initial operating position.

FIG. 3 is a perspective view of the first and second conductive wires 14 and 15. As shown in FIG. 3, the protruding portion 14a provided on the other end of the first conductive wire 14 is the second conductive wire. By being press-fitted into the fitting hole 15a provided on the other end side of 15,
Both are engaged. Also, when the protrusion 14a and the fitting hole 15a are loose due to dimensional error after press-fitting, the Joule heat generated by passing an electric current through the first and second conducting wires may be used for welding. Alternatively, the protrusion 14a and the fitting hole 15a may be loosely fitted and welded by Joule heat.

FIG. 4 is a sectional view of a throttle valve opening sensor which employs a connector terminal / electronic circuit connecting device according to another embodiment of the present invention. Only differences from the above embodiment will be described. . The first conducting wire 14 of this another embodiment has a holding portion 14b which constitutes a holding means on one end side, and the holding portion 14b is the held portion 11 of the housing 11.
By holding d, the first conducting wire 14 is
The structure is fixed to 1. Therefore, the first conductor 14 can be easily attached to the housing 11 with one touch, and the first conductor 14 can be removed and the first conductor 14 can be replaced. In addition, the first conductor 14 and the second
A seal member may be provided between the conductor 15 and the housing 11 to seal the connector side and the electronic circuit side.

FIG. 5 is a perspective view of the first and second conducting wires of another embodiment, and FIGS. 6 and 7 are perspective views of the first and second conducting wires of another embodiment from different directions. As shown in the figure, the first conductor 14
The second conductor 15 and the second conductor 15 are engaged with each other by press-fitting the protrusion 14a of the first conductor 14 into the fitting hole 15a of the second conductor 15, and in the embodiment of FIG. 6, the protrusion 14a.
Since the cross-sectional shape of the above is triangular and the cross-sectional shape of the fitting hole 15a is quadrangular, the corners of the triangle bite into the sides of the fitting hole 15a and are fixed. In the embodiment of FIG. 7, the projecting portion 14a and the fitting hole 15a have the same cross-sectional shape (rectangular shape), and both are press-fitted at positions where the corners do not relatively match each other. The sectional shapes of the protrusion 14a and the fitting hole 15a are not limited to these.

In the above-mentioned other embodiment, since the corners of the protrusions 14a of the first conducting wire 14 are pressed into the fitting holes 15a of the second conducting wire 15 in a pressed state, the protrusions 14a and the fitting holes 15a.
Of the first and second conductive wires 1 after press-fitting can be absorbed by bending, without requiring a high dimensional accuracy.
The rattling of 4 and 15 can be prevented.

The first conductor 14 and the second conductor 15 preferably have different hardnesses. In this case, when the protrusion 14a is press-fitted into the fitting hole 15a, the softer member is flexed and press-fitted. The protrusion 14a and the fitting hole 15a
Since it is possible to absorb the dimensional error of
A high dimensional accuracy is not required for the protrusion 14a and the fitting hole 15a.

In the above-mentioned embodiment and other embodiments, the connector terminal and the electronic circuit can be connected with a small number of steps without soldering.

Furthermore, since the housings 11 and 12 can be resin-molded, it is not necessary to set a core metal in the mold as in injection molding, and the number of steps can be further reduced.

In the above-described embodiment and other embodiments, the first conductor 14 is provided with the projection 14a and the second conductor 15 is provided with the fitting hole 15a. However, the first conductor 14 is fitted with the fitting hole 15a. There is no problem even if the protrusions are formed on the second conducting wire 15 by forming the above.

[0037]

According to the first aspect of the present invention, the first conductive wire is formed by press-fitting the protrusion formed on the other of the fitting holes formed on either one of the first and second conductive wires. The second conducting wire is connected, and the connector terminal and the electronic circuit are connected via the first and second conducting wires. Thus, the connector terminal and the electronic circuit can be connected with a small number of steps without soldering.

According to the second aspect of the invention, since the fitting hole and the protrusion have different cross-sectional shapes, either the fitting hole or the protrusion is press-fitted in a bent state. Since the dimensional error of the protrusion and the fitting hole can be absorbed by bending, a high dimensional accuracy is not required for the protrusion and the fitting hole, and the cost is low.

According to the third aspect of the present invention, the fitting hole and the projection have polygonal and identical cross-sectional shapes, and both are relatively press-fitted at positions where the corners do not coincide with each other. Since either the fitting hole or the projection is press-fitted in a bent state, a high dimensional accuracy is not required for the projection and the fitting hole as in the second aspect of the invention, and the cost is low.

In the invention of claim 4, the first conductor wire or the second conductor wire on which the protrusion is formed is made of a material harder than the first conductor wire or the second conductor wire on which the fitting hole is formed. As a result, when the protrusion is press-fitted, the softer member is flexed and press-fitted by a necessary amount.
As in the invention described above, a high dimensional accuracy is not required for the protrusion and the fitting hole, and the cost is low.

According to the fifth aspect of the present invention, a current is passed through the first conductor and the second conductor, and the Joule heat at this time welds both to connect the first conductor and the second conductor to each other. The terminal and the electronic circuit are connected via the first and second conducting wires. Thus, the connector terminal and the electronic circuit can be connected with a small number of steps without soldering. Furthermore, since the protrusions may be fitted into the fitting holes with a gap, the protrusions and the fitting holes require low dimensional accuracy, which is low cost.

In the invention of claim 6, the first and second
Since the conducting wire is fixed to the housing by the fixing means, the first and second conducting wires are fixed at two places, the engaging portion and the fixing means, respectively, so that the first conducting wire and the second conducting wire are engaged with each other. Can be made hard to come off and the first and second conducting wires can be made hard to fall off.

According to the seventh aspect of the invention, since the fixing means is an adhesive agent, the connector side and the electronic circuit side can be sealed, so that the moisture that has entered from the connector side enters the housing. The electronic circuit is prevented from being short-circuited.

In the invention of claim 8, the fixing means is provided in at least one of the first and second conducting wires and the housing, and the holding means is provided to sandwich the other member, whereby the first conducting wire is provided. Can be easily attached to the housing with one touch, and it can be removed and the first conductor wire can be replaced, leading to improved reliability.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a connecting device for connecting a connector terminal and an electronic circuit according to the present invention to a throttle valve opening sensor.

FIG. 2 is a sectional view of the throttle valve opening sensor of FIG. 1 taken along the electronic circuit.

FIG. 3 shows a perspective view of first and second conducting wires.

FIG. 4 is a cross-sectional view in which a connector terminal / electronic circuit connecting device according to another embodiment of the present invention is used in a throttle valve opening sensor.

FIG. 5 shows a perspective view of first and second conducting wires of another embodiment.

FIG. 6 is an enlarged perspective view of the engaging portions of the first and second conducting wires of another embodiment.

FIG. 7 is an enlarged perspective view of the engaging portions of the first and second conducting wires of another embodiment.

[Explanation of symbols]

 10 ... Throttle valve opening sensor 14 ... 1st conducting wire (connector terminal) 14a ... Protrusion (engaging portion) 14b ... Holding part (holding means) 15 ... 2nd conducting wire 15a ... Fitting hole (engaging portion) 16 ... Electronic circuit

Claims (8)

[Claims] 1. A connection device for connecting an electronic circuit printed on a housing and a connector terminal of a connector which is electrically connected to the electronic circuit to connect and disconnect with an external electronic device, wherein one end is electrically connected to the electronic circuit. A first conductive wire having an engaging portion formed at the other end; a second conductive wire having one end electrically connected to the connector terminal and having an engaging portion formed at the other end and engaging with the engaging portion of the first conductive wire; A hole formed in a housing into which the first and second conducting wires can be fitted, a fitting hole is formed in one of the engaging portions of the first and second conducting wires, and the other is formed in the other A connecting device between a connector terminal and an electronic circuit, characterized in that the protruding portion is pressed into the fitting hole. 2. The connection device between a connector terminal and an electronic circuit according to claim 1, wherein the fitting hole and the protrusion have different cross-sectional shapes. 3. The cross section of the fitting hole and the protrusion has a polygonal shape and the same shape, and the two are press-fitted at a position where the corners do not relatively match each other. 1. A connection device between a connector terminal according to 1 and an electronic circuit. 4. The first conductor wire or the second conductor wire on which the protrusion is formed is made of a material harder than the first conductor wire or the second conductor wire on which the fitting hole is formed. The connection device between a connector terminal according to any one of claims 1 to 3 and an electronic circuit. 5. A connecting device for connecting an electronic circuit printed on a housing and a connector terminal of a connector which conducts to the electronic circuit and connects / disconnects an external electronic device to the electronic circuit, wherein one end is electrically connected to the electronic circuit. A first conductive wire having an engaging portion formed at the other end; a second conductive wire having one end electrically connected to the connector terminal and having an engaging portion formed at the other end and engaging with the engaging portion of the first conductive wire; A connecting device for connecting a connector terminal and an electronic circuit, which has a hole formed in a housing and into which the first and second conducting wires can be fitted, and through which electric current is applied to the first conducting wire and the second conducting wire for welding. . 6. The fixing means for fixing the first and second conducting wires to the housing.
6. A device for connecting a connector terminal according to claim 5 to an electronic circuit. 7. The connection device between a connector terminal and an electronic circuit according to claim 6, wherein the fixing means is an adhesive. 8. The holding means includes a holding means formed on at least one of the first and second conducting wires and the housing to hold the other member. A connection device between the connector terminal described and an electronic circuit.