JP2001085094A - Connecting structure of connecting terminal to circuit board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily bend a connecting terminal with a simple jig by connecting the connecting terminal bent by pressing to a terminal bending pedestal adjacent to the connecting terminal projecting from a housing formed of a part of a bus bar to a circuit board. SOLUTION: A terminal bending pedestal 71 is arranged so as to be adjacent on the outside to a circuit connecting terminal 37b, and the pedestal is formed in a shape bendable in an almost L shape by using a work jig 73 by pressing of the circuit connecting terminal 37b. Notches 72 are preformed on both side surfaces of a bending part of the circuit connecting terminal 37b. The work jig 73 is formed so as to have in a tip part plural grooves in individually response to respective circuit connecting terminals and a pressing part 75 formed in a triangular shape so as to form a bottom surface of these grooves when the circuit connecting terminals 37b exist in a plurality. The circuit connecting terminal 37b becomes an almost right angle in a notch part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection terminal formed of a part of a busbar made of a conductive metal inserted into a housing made of a synthetic resin and protruding from the housing, and a circuit board attached to the housing. And improvement of the connection structure.

[0002]

2. Description of the Related Art Conventionally, when a connection terminal is connected to a circuit board by soldering or the like, in order to prevent the connection portion of the connection terminal from being disconnected from the circuit board due to expansion and contraction of the connection terminal due to heat. It is common practice to bend the connection terminal in advance and absorb the expansion and contraction at the bent portion.

[0003]

However, when the connection terminal is formed by a part of the bus bar which is insert-coupled to the synthetic resin housing, the connection terminal is limited by a mold structure for molding the housing. Must be bent after the molding of the housing, the bending work of the connection terminals becomes complicated, and the bending jig becomes complicated.

The present invention has been made in view of such circumstances, and has as its object to provide a connection structure for connecting a connection terminal to a circuit board so that the connection terminal can be easily bent with a simple jig. And

[0005]

SUMMARY OF THE INVENTION To achieve the above object, the invention according to claim 1 is formed by a part of a conductive metal bus bar which is insert-coupled to a synthetic resin housing. A connection structure between a protruding connection terminal and a circuit board attached to the housing, wherein a terminal bending pedestal adjacent to the connection terminal is formed in the housing at the time of molding, and is connected to the terminal bending pedestal. The connection terminal bent by pressing is connected to the circuit board.

According to such a configuration, after the completion of the molding of the housing, the connection terminal, which is a part of the bus bar, which is insert-coupled to the housing, is bent by simply pressing the connection terminal against the terminal bending pedestal. Since the pressing jig only needs to have a simple shape, the connection terminal can be easily bent with a simple jig.

[0007] The invention according to claim 2 provides the above-described claim 1.
In addition to the configuration of the invention described in the above, a notch is formed in advance in the connection terminal at a portion bent by pressing against the terminal bending pedestal, and according to such a configuration, the connection terminal can be made simpler. Can be bent.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

FIGS. 1 to 13 show an embodiment in which the present invention is applied to a torque detector. FIG. 1 is a longitudinal sectional view of the torque detector, and FIG. FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 2, FIG. 4 is an exploded perspective view of a coil assembly and a bus bar assembly,
5 is an exploded plan view of the coil assembly and the bus bar assembly, FIG. 6 is a plan view of the coil assembly and the bus bar assembly in a temporarily fixed state, FIG. 7 is a sectional view taken along line 7-7 of FIG.
9 is a cross-sectional view corresponding to FIG. 7, showing a molded state of the housing, FIG. 9 is a plan view of the housing, FIG. 10 is a view taken in the direction of arrow 10 in FIG. 9, FIG. FIG. 13 is a cross-sectional view showing a bending process of the circuit connection terminal along the line 12-12 in FIG. 11, and FIG. 13 is a cover 13-13 in FIG. 11 in a cover welded state.
It is a line sectional view.

First, in FIG. 1, this torque detector is
For example, the input shaft 11 is provided in a power steering system of the vehicle and is connected to a steering handle (not shown), the output shaft 12 is connected to a wheel (not shown) and is coaxial with the input shaft 11, and an input shaft. 11 and a torsion bar 13 connecting the output shaft 12 to each other.
Input shaft 11 and output shaft 1 due to torsional deformation of
The relative angular displacement generated between the two is detected as a value corresponding to the input torque.

The housing 14 of the torque detector comprises a bobbin 15 and first and second windings wound around the bobbin 15.
The input shaft 11, which is formed of a synthetic resin in a cylindrical shape so as to cover the coil assembly 18 having the coils 16 and 17, is formed in a hollow substantially cylindrical shape.
Is rotatably supported via a ball bearing 19 fixed to the bobbin 15 at one end in the axial direction, and protrudes into the housing 14. Moreover, ball bearing 19
The housing 14 and the input shaft 11
A dust seal 20 is provided between them.

The torsion bar 13 is inserted into the input shaft 11, and the input shaft 11 and one end of the torsion bar 13 are connected to each other by a connecting pin 21. Accordingly, one end of the torsion bar 13 rotates together with the input shaft 11, while the other end of the torsion bar 13 and the other end of the input shaft 11 can be relatively angularly displaced in accordance with the torsional deformation of the torsion bar 13.

A metal support 22 is fastened to the other end of the housing 14. The support 22 is fixedly supported by a vehicle body 23 of the vehicle, and the housing 14 and the housing 14 are fastened to each other. An annular seal member 24 for preventing water and dust from entering the support 22 is interposed between the support 22 and the vehicle body 23.

The output shaft 12 is rotatably supported by a support 22 via a ball bearing 25. The other end of the torsion bar 13 is connected to one end of the output shaft 12 via a serration 26. .

A movable member 27 made of synthetic resin is disposed between the bobbin 15 of the coil assembly 18 integrated with the housing 14 and the other end of the input shaft 11. The ring-shaped core 28 is fixed.

On one end of the output shaft 12, a pair of regulating pins 29, 29 projecting outward from the outer surface of the output shaft 12 along one diameter line are mounted. , 29 are engaged with the regulating grooves 30,
30 is provided on the inner surface of the movable member 27 so as to extend along the axial direction of the output shaft 12. Therefore, the movable member 2
7 and the core 28 cannot rotate relative to the output shaft 12, but can move relative to the output shaft 12 in the axial direction within a range in which the restriction pins 29, 29 are guided by the restriction grooves 30, 30. In addition, a coil spring 32 is provided between the movable member 27 and the retainer 31 received by the inner ring of the ball bearing 25 provided between the output shaft 12 and the support 22. The movable member 27, that is, the core 28 is urged in a direction away from the output shaft 12 by a spring force.

2 and 3, a spiral guide groove 33 is provided on the inner surface of the movable member 27, and a pin 34 fitted in the guide groove 33 is mounted on the input shaft 11. Accordingly, when a relative angular displacement occurs between the input shaft 11 and the output shaft 12 due to the torsional deformation of the torsion bar 13 in response to the torque input to the input shaft 11, the movable member 27 and the core are moved in accordance with the relative angular displacement. 28 is the input shaft 11
Will be changed along the axis.

Referring to FIGS. 4 and 5, the bobbin 15 includes a substantially cylindrical coil winding portion 15a and a substantially cylindrical extension cylindrical portion 1 coaxially connected to one end of the coil winding portion 15a.
5b, and is formed in a substantially cylindrical shape with a step as a whole. The outer surface of the one end side, the middle part, and the other end side of the coil winding portion 15a has a regulation that regulates a winding range of the first and second coils 16, 17 wound on the outer surface of the coil winding portion 15a. The walls 15c, 15d, and 15e are integrally provided so as to protrude outward in the radial direction. A plurality of protrusions 15f, 15f for strengthening the connection between the bobbin 15 and the housing 14 are provided on the outer surface on one end side of the coil winding portion 15a.
Are radially projected so that the outer end portion is flush with the outer end portion of the regulating wall portion 15c, and the other end side outer surface of the coil winding portion 15a strengthens the connection between the bobbin 15 and the housing 14. The plurality of protrusions 15g, 15g,.
Radially protruding from 5e.

A ball bearing 19 provided between the input shaft 11 and the housing 14 is provided at the tip of the extension cylinder 15b of the bobbin 15 so that its axially outer end slightly projects from the tip of the extension cylinder 15b. A flange 15h for receiving the inner end of the outer ring of the ball bearing 19 is provided integrally with the extension cylinder 15b so as to protrude radially inward from the inner surface of the extension cylinder 15b. Can be

The coil assembly 18 includes the bobbin 15 and
First and second coils 16 wound around the bobbin 15,
17 and three conductive metal busbars 37 mounted on the outer surface of one end side of the coil winding portion 15a of the bobbin 15,
38 and 39.

At one end of each of the bus bars 37, 38, the extension cylindrical portion 15b is provided outside the extension cylindrical portion 15b of the bobbin 15.
The coil connection terminals 37a, 38a are formed on one end of the bus bar 37, 38, respectively. The other ends of the bus bars 37, 38 are provided with a pair of bifurcated circuit connection terminals 37b, 37a.
b; 38b are formed so as to protrude outward from the outer surface on one end side of the coil winding portion 15a along the radial direction of the bobbin 15. Busbar 39
Is mounted on the bobbin 15 between the busbars 37 and 38. A pair of bifurcated coil connection terminals 39a and 39a are provided at one end of the busbar 39 with the extension cylindrical portion 15b. Is formed so as to extend to one end side of the extension tubular portion 15b outside of the coil winding portion 1 along the radial direction of the bobbin 15 at the other end side of the bus bar 39.
Circuit connection terminal 3 protruding outward from the outer surface on one end side of 5a
9b is formed.

When the bus bars 37 to 39 are mounted on the bobbin 15, the coil connection terminals 37 of the bus bars 37 and 38 are connected.
One ends of the first and second coils 16 and 17 are connected to the first and second coils 16 and 17 by fusing or the like, respectively.
The other ends of the first and second coils 16, 17 are connected to the coil connection terminals 39a, 39a by fusing or the like, respectively.

When the housing 14 is molded, the coil assembly 18, the ball bearing 19 fitted to the bobbin 15 of the coil assembly 18, and temporarily fixed to the coil assembly 18 as shown in FIG. The bus bar assembly 40 to be inserted is inserted into the mold, and the bus bar assembly 40 is also covered by the housing 14.

The bus bar assembly 40 is formed by covering a plurality of, for example, seven bus bars 41 to 47 made of a conductive metal with a coating portion 48 made of a synthetic resin.

One end of each of the bus bars 41 to 47 has an external portion projecting outward from the covering portion 48 in a direction parallel to the radial direction of the coil assembly 18 with the bus bar assembly 40 temporarily fixed to the coil assembly 18. Conductive wire connection terminals 41 a to 47 a are formed respectively, and the other ends of the bus bars 41 to 47 are parallel to the radial direction of the coil assembly 18 in a state where the bus bar assembly 40 is temporarily fixed to the coil assembly 18. Terminal 4 for coil projecting outward from covering portion 48 in any direction
1b to 47b are respectively formed.

The coil connection terminals 41b-47b are arranged such that the coil connection terminals 37b..., 38b... 39b of the bus bars 37-39 mounted on the bobbin 15 are arranged in a plane orthogonal to the axis of the bobbin 15. , 38b..., 3
9b so that the bobbin 15
Are arranged so as to be aligned in the axial direction. The external wire connection terminals 41a to 47a are connected to the respective coil connection terminals 37.
, 38b..., 39b, and 41b to 47b are located at positions shifted from the bobbin 15 in the circumferential direction.
5 are arranged so as to be arranged in a plane orthogonal to the axis.

The covering portion 48 is formed in a substantially circular arc shape so that the inner periphery thereof can be brought into contact with the outer periphery of the regulating wall portions 15c to 15e of the coil assembly 18, and the covering portion 48 is formed in a manner similar to the regulating wall portions 15c to 15e. In a state in which it is brought into contact with the bobbin 15 of the coil assembly 18, the caulking portions 49 and 5 can be caulked and engaged with the bobbin 15.
0 is formed integrally with the bus bar 41 of the bus bars 41 to 47, and the swaging portion 51 which can be swaged and engaged with the bobbin 15 of the coil assembly 18 is formed integrally with the bus bar 47 of the bus bars 41 to 47. Is done.

On the other hand, on the outer surface of one end of the coil winding portion 15a of the bobbin 15 of the coil assembly 18, an engaging hole 52 for caulking and engaging the caulking portion 50 is formed on one end of the coil winding portion 15a. An engaging portion 53 formed between the outer surface and the outer surface protrudes integrally, and the caulking portions 49 and 51 are swaged and engaged with the outer surface on the other end side of the coil winding portion 15a of the bobbin 15 of the coil assembly 18. Holes 54, 56 for
Are formed integrally with the outer surface of the other end side of the coil winding portion 15a.

Accordingly, with the inner periphery of the covering portion 48 being in contact with the outer periphery of the regulating walls 15c and 15e of the coil assembly 18, the caulking portions 49 to 51 are connected to the locking portions 53, 55 and 57 of the bobbin 15. By crimping engagement, the bus bar assembly 40 is temporarily fixed to the coil assembly 18 as shown in FIG.

Referring also to FIG. 7, the bus bar assembly 4
In the covering portion 48, the bobbin 15
The flow control units 48a and 48b for bringing the distal end into contact with the outer surface of the extension tubular portion 15b are integrally provided such that the base end is connected to the outer periphery of the covering unit 48. 48b, when the housing 14 covering the coil assembly 18 and the busbar assembly 40 is molded, the flow of the molten resin in the mold is prevented from flowing between the busbar assembly 40 and the coil assembly 18 to prevent the molten resin from flowing. It functions to guide the flow of the resin to the outer peripheral side of the bus bar assembly 40.

That is, as shown in FIG. 8, the coil assembly 18, the ball bearing 19, and the busbar assembly 40
Is inserted into the molding die 58, and a cavity 59 formed between the coil assembly 18, the ball bearing 19 and the bus bar assembly 40 and the molding die 58 is indicated by an arrow from the gate 60 on one end side of the bobbin 15. When the molten resin is press-fitted as described above, the flow control units 48a and 48b
The molten resin is guided to the outer peripheral side of the bus bar assembly 40.

9 to 11, in the housing 14 molded by the molding die 58, flange portions 14a for fastening the housing 14 to the support 22 are arranged at equal intervals in the circumferential direction of the housing 14. Bolts 62... (See FIG. 1) screwed to the support body 22 are inserted into the flange portion 14a at these three places so as to protrude outward. The cylindrical metal sleeves 61 are insert-coupled.

The housing 14 is integrally formed with a male coupler portion 14b formed in a tubular shape having a rectangular cross section and projecting outward.
The external conductor connection terminals 41a to 47a at one ends of the bus bars 41 to 47 to be insert-coupled to the housing 14 by being covered are arranged so as to face the inside of the coupler portion 14b.

Further, the housing 14 is integrally formed with a cylindrical portion 14c having a substantially rectangular cross section so as to protrude outward in the radial direction of the housing 14, and forms an inner surface of the cylindrical portion 14c. Thus, the housing recess 63 provided in the housing 14 is provided in the housing 14.
A flange 65 is integrally provided at an outer end of the cylindrical portion 14 c, and a cover 64 made of a synthetic resin for closing the accommodation recess 63.
(See FIG. 1) is welded to the flange 65.

As shown in FIG. 1, an electric circuit 67 comprising an electric component such as an amplifier mounted on a circuit board 66 is accommodated in the accommodating recess 63.
4 attached. The electric circuit 67 is configured to obtain a signal corresponding to the input torque according to a change in inductance of the first and second coils 16 and 17. That is, due to the torsional deformation of the torsion bar 13 according to the torque input to the input shaft 11, the core 28
Of the first and second coils 16,
The relative position with respect to the coil 17 is changed, and such a change in the relative position causes a magnetic change around the coils 16 and 17, thereby changing the inductances of the coils 16 and 17. A signal corresponding to the input torque is obtained in the electric circuit 67 according to the change in the inductance.

In order to mount the circuit board 66, the circuit board 66 is provided at the bottom of the housing recess 63 in the housing 14.
A plurality of, e.g., 3
Bosses 70, 70...
9 are inserted into the circuit board 66 received by the receiving surface 68, and the protruding portions of the projecting portions 69 from the circuit board 66 are caulked and engaged, whereby the circuit board 66 is fixed to the housing 14. .

When the bus bar assembly 40 is covered with the housing 14, the circuit connecting terminals 41b to 47b at the other ends of the bus bars 41 to 47 to be inserted into the housing 14 and the coil assembly 18 are formed. The circuit connection terminals 37b,..., 38b,.
Means that they protrude from the housing 14 so as to be arranged in the accommodating recess 63, and these circuit connection terminals 37b,.
39b, 41b to 47b are connected to the circuit board 66 by soldering or the like in a state where the ends thereof are inserted through the circuit board 66.

Moreover, the connection terminals 37b...
, 39b, 41b to 47b are connected to the respective circuit connection terminals 3 by expansion and contraction by heat in a state of connection to the circuit board 66.
38b, 39b, 41b-47b are bent before mounting the circuit board 66 to the housing 14 in order to prevent the connection portions of the circuit board 66 from coming off. In the housing 63, connection terminals 37b..., 38b.
Terminal bending pedestals 71 and 7 individually corresponding to 1b to 47b
Are formed when the housing 14 is molded.

In FIG. 12, each terminal bending pedestal 71,
71 are circuit connection terminals 37b, 38b, 39
b, 41b to 47b, and are arranged so as to be adjacent to the outer side thereof, and the circuit connection terminals 37b,.
, 39b, 41b to 47b are pressed to connect the circuit connection terminals 37b, 38b, 39b, 41b to 41b.
7b is formed into a shape that can be bent into a substantially L-shape.

Each of the circuit connection terminals 37b is bent at a portion bent by being pressed against the terminal bending pedestals 71.
…, 38b…, 39b, on both sides of 41b-47b,
Are formed in advance.

Each of the circuit connection terminals 37b ..., 38b ..., 3
When the molding of the housing 14 is completed, 9b and 41b to 47b extend linearly and protrude from the housing 14, as shown in FIG. Connection terminals 37b ..., 38b
, 39b, 41b to 47b are bent as shown in FIG.
A bending jig 73 as shown in FIG. The bending jig 73 includes the circuit connection terminals 37b,.
8b..., 39b, and 41b to 47b may be bent one by one, but in order to improve the processing efficiency,
, 38b,..., 39
It is desirable that each of b and the circuit connection terminals 41b to 47b arranged in a line can be bent at one time. Therefore, the bending jig 73 forms a plurality of grooves 74... Corresponding to each of the circuit connection terminals 37 b, 38 b, 39 b and 41 b to 47 b and the bottom surface of the grooves 74. Pressing part 75 formed in a triangular shape
Are provided at the tip. Thus, the pressing portion 7
5 are connected to the circuit connection terminals 37b, 38b, 39b;
By pressing against the bases 41b to 47b and the bases 71 for terminal bending as shown in FIG. 12C, the connection terminals 37b, 38b, 39b for the respective circuits;
.. are bent so as to be bent at substantially right angles at the notches 72.

In this manner, each circuit connection terminal 37b
, 38b ..., 39b; the circuit board 66 is attached to the housing 14 after the bends 41b to 47b, and thereafter, the circuit connection terminals 37b to the circuit board 66 are connected.
b ..., 39b; connections of 41b to 47b are executed.

In FIG. 13, a coupler portion 14b provided in the housing 14 has female connectors connected to external conductors 78, 78... Respectively corresponding to the external conductor connection terminals 41a to 47a arranged in the coupler portion 14b. The coupler 77 is detachably mounted. The coupler 77 has a cylindrical portion 77a fitted on the outer periphery of the coupler portion 14b, and an insertion portion 77b inserted into the coupler portion 14b. Formed of synthetic resin.

Insertion holes 79, 79 into which the external conductor connection terminals 41a to 47a are individually inserted are formed in the insertion portion 77b.
Are provided, and at the inner ends of the insertion holes 79, 79, are individually connected to the external conductors 78, 78, and the external conductor connection terminals 41a to 47a can be removably fitted. The terminals 79 are fixed.

Further, an endless seal is provided on the outer periphery of the insertion portion 77b of the coupler 77 so as to be in close contact with the outer periphery of the coupler portion 14b when the coupler 77 is mounted on the coupler portion 14b and to maintain the watertightness in the coupler portion 14b. The member 81 is mounted.

Incidentally, the electric circuit 67 is inserted into the accommodation recess 63.
It is necessary to check the waterproofness of the housing recess 63 closed by the cover 64 welded to the flange 65 after receiving the airbag. Air pressure acts on the housing recess 63 from within the coupler portion 14b to check the waterproofness. The communication hole 82 that can be closed is provided in the coupler portion 14b and in the accommodation recess 6.
3 and is provided in the housing 14.

Next, the operation of this embodiment will be described. An external circuit connection terminal 41a-47a facing one end of the coupler portion 14b provided on the housing 14 is provided at one end, and an electric circuit accommodated in the housing 14 is provided. 6
In inserting the bus bars 41 to 47 having the circuit connection terminals 41b to 47b connected to the other end thereof on the other end side into the housing 14, the caulking portions 49, 50, and 51 capable of caulking and engaging with the bobbin 15 are provided. Bus bar 4
A busbar assembly 40 composed of a plurality of busbars 41 to 47 including the bus bars 41 and 47 and a covering portion 48 made of a synthetic resin that covers a part of the busbars 41 to 47 is formed by a coil assembly. The caulking portions 49 to 51 are caulkedly engaged with the bobbin 15 in a state of being in contact with the three-dimensional body 18 so as to be temporarily fixed to the coil assembly 18. For this reason,
The displacement of the bus bars 41 to 47 due to the pressure of the molten resin during the molding of the housing 14 can be prevented, and the plurality of bus bars 41 to 47 can be accurately positioned and insert-coupled to the housing 14. .

In addition, the flow of the molten resin is prevented from flowing into the space 48 of the bus bar assembly 40 between the bus bar assembly 40 and the coil assembly 18 when the housing 14 is formed by molding. Since the flow control portions 48a and 48b are formed to be guided to the outer peripheral side of the bus bar assembly 40, the bus bar assembly 4 is moved in a direction in which the pressure of the molten resin causes the bus bar assembly 40 to move away from the coil assembly 18.
0, it is possible to more reliably prevent the displacement of the bus bar assembly 40, and the bus bar assembly 40 is deformed by the pressure of the molten resin. Can be prevented.

The circuit connection terminals 3 formed by a part of the bus bars 37, 38, 39, 41 to 47 inserted into the housing 14 and protruding from the housing 14.
, 38b, 39b, 41b to 47b are connected to a circuit board 66 mounted on the housing 14 by soldering or the like, and the connection terminals 37b, 38b, 39b, 41b for the respective circuits due to heat. , 38b..., 38b.
In order to prevent the connection parts of the circuit boards 39b, 41b to 47b from being disconnected from the circuit board, circuit connection terminals 37b,.
38b... 39b and 41b to 47b need to be bent in advance, but the housing 14 has terminal bending pedestals 71 and 71 adjacent to the circuit connection terminals 37b. Are formed at the time of molding. Therefore, the circuit connection terminals 37b,.
, 39b, 41b to 47b are connected to the terminal bending pedestal 71,
It is possible to bend just by pressing on 71 ...
Since the bending jig 73 for pressing may have a simple shape, the circuit connecting terminals 37b, 38b, 39b, 41b to 47b can be easily bent by the simple bending jig 73. be able to.

The circuit connection terminals 37b, 38b,.
39b, 41b to 47b, the terminal bending pedestal 7
The notch 7 is applied to the part bent by pressing against
Are formed in advance, and the circuit connection terminals 37 are formed.
, 38b, 39b, 41b to 47b can be bent more easily.

Further, after the electric circuit 67 is housed in the housing recess 63 provided in the housing 14, the housing recess 63 is closed by the cover 64. In order to check the performance, a communication hole 82 that allows air pressure to be applied from the inside of the coupler portion 14b to the inside of the housing recess 63 connects the inside of the coupler portion 14b and the inside of the housing recess 63 with the housing 1.
4 and a coupler 77 is provided in the coupler section 14b.
Can be detachably and watertightly mounted. Therefore, after completion of the waterproof check, the coupler 77
By mounting the communication hole, it is not necessary to close the communication hole 82, and it is possible to reduce the number of components by eliminating the member for closing the communication hole 82, and to reduce the number of parts by eliminating the work of closing the communication hole 82. Reduction can be achieved.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.

For example, in the above embodiment, the case where the present invention is applied to a torque detector has been described.
A connection terminal formed of a part of a conductive metal bus bar inserted into a synthetic resin housing and protruding from the housing is widely applicable to those connected to a circuit board mounted on the housing.

[0054]

As described above, according to the first aspect of the present invention, after the completion of the molding of the housing, the connection terminal, which is a part of the bus bar insert-coupled to the housing, is pressed against the terminal bending pedestal. The connection terminal can be bent simply by attaching it, and the jig for pressing may have a simple shape, so that the connection terminal can be easily bent with a simple jig.

According to the second aspect of the present invention, the connection terminal can be bent more easily.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a torque detector.

FIG. 2 is a cross-sectional view showing an engaged state of an input shaft and a movable member.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 2;

FIG. 4 is an exploded perspective view of the coil assembly and the bus bar assembly.

FIG. 5 is an exploded plan view of the coil assembly and the bus bar assembly.

FIG. 6 is a plan view of the coil assembly and the bus bar assembly in a temporarily fixed state.

FIG. 7 is a sectional view taken along line 7-7 of FIG. 6;

FIG. 8 is a cross-sectional view showing a molding state of the housing corresponding to FIG.

FIG. 9 is a plan view of a housing.

10 is a view taken in the direction of arrow 10 in FIG. 9;

11 is a view taken in the direction of arrow 11 in FIG. 9;

FIG. 12 shows a bending process of the circuit connection terminal in FIG.
It is sectional drawing shown along line 12.

FIG. 13 is a sectional view taken along line 13-13 of FIG. 11 in a state where the cover is welded;

[Explanation of symbols]

 14 Housing 37-39, 41-47 Bus bar 37b-39b, 41b-47b Connection terminal 66 Circuit board 71 Terminal pedestal 72 Notch

Claims (2)

[Claims] 1. A conductive metal busbar (37-39, insert-coupled to a synthetic resin housing (14)).
41 to 47) and a part of the housing (1).
4) Connection terminals (37b to 39b, 41b) protruding from
47b) and a circuit board (66) attached to the housing (14), wherein the housing (14) includes the connection terminals (37b to 39b, 41).
The terminal bending pedestal (71) adjacent to the terminal bending pedestals (b-47b) is formed at the time of molding, and the connection terminals (37b-39b, 4) bent by pressing against the terminal bending pedestal (71).
1b to 47b) are connected to the circuit board (66). 2. The connection terminals (37b to 39b, 4) at portions bent by pressing against the terminal bending pedestal (71).
The connecting structure for connecting a connection terminal to a circuit board according to claim 1, wherein a notch (72) is formed in advance in 1b to 47b).