JPH09189720A - Structure for holding pin terminal of indicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the backlash of a pin terminal engaged with a holding flange and prevent the disconnection of a lead wire. SOLUTION: When an energizing member 3 is inserted and engaged with an insertion hole 16A, it generates an energizing force to fix and hold a pin terminal 1 within the hole 16A. Then the terminal 1 is usually brought into contact with a holding flange 16 within the through-hole 16A, so that the backlash of the terminal 1 can be suppressed. In addition, the influence of the backlash on a lead wire R fixed on the terminal 1 can be suppressed and its disconnection be also prevented, resulting in higher reliability and longer service life of not only a movement 11 but a cross-coil type indicator.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin terminal holding structure for an indicating instrument, and more particularly to a pin terminal holding structure for an indicating instrument used in a cross coil type indicating instrument to which one end of a cross coil is connected.

[0002]

2. Description of the Related Art Conventionally, a current that is converted according to a measured amount is applied to a pair of coils that generate magnetic fields orthogonal to each other, and a magnet rotor is generated in a direction of a composite magnetic field obtained by combining the magnetic fields generated by the pair of coils. 2. Description of the Related Art There is known a cross-coil type indicating instrument in which a (rotator) is rotated and a measurement amount is displayed by a pointer which rotates with the magnet rotor.

FIG. 9 (a) shows an external view of a general cross coil type indicator. Indicating instrument movement 101
Is a cylindrical shield case 102 having an open upper end.
The coil bobbin 103 is housed inside the shield case 102.

On the coil bobbin 103, a conductor R is wound so that two coils (not shown) are orthogonal to each other, and a rotary shaft 104 attached to the center of a disk-shaped magnet rotor (not shown) is rotatably arranged. A pointer (not shown) is attached to the tip of the rotary shaft 104.

A pair of holding flanges 106 projecting outward from the shield case 102 are integrally formed at diametrically symmetrical positions on the periphery of the coil bobbin 103, and each holding flange 106 has an upper end. Part 107A
One end of the lead wire R that constitutes each coil is connected to the pin, and a pin terminal 107 that extends in the up-down direction along the peripheral surface of the shield case 2 is fitted and inserted.

This pin terminal 107 is roughly classified into FIG.
As shown in (b), the lead wire R of the cross coil is entangled with the upper end portion 107A and soldered to the tip portion 108, and HP.
C (Hard Printed Circuit) Fitting portion 1 for fitting to pin terminal 121 (male side terminal) provided on substrate 120
09 (female side terminal) at the terminal end, a main body 110,
It is provided with.

The tip end portion 108 is provided with a entwining portion 108A in which the conductive wires forming the crossing coil are entangled.

[0008]

When manufacturing the above-mentioned conventional movement 101, after the lead wire R is wound around the coil bobbin 103, the pin terminal 1 fitted into the holding flange is inserted.
One end of the conductor wire R is entangled with the entwined portion 108A of the tip portion 108 of 07, and then soldered, and the tip portion 108 is attached to the rotary shaft 1.
Bent to the 04 side to make a finished product.

By the way, the fixing of the pin terminal 107 to the holding flange 106 relies on the contact resistance when the pin terminal 107 and the holding flange 106 are fitted together, and the holding force is lowered depending on the usage state, causing backlash. The lead wire R soldered to the tip portion 107A may be broken due to fatigue or the like.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a pin terminal holding structure for an indicating instrument capable of suppressing rattling of a pin terminal fitted in a holding flange and preventing disconnection of a conducting wire. is there.

[0011]

In order to solve the above-mentioned problems, the invention according to claim 1 is provided on a holding flange formed on a peripheral portion of a coil bobbin main body for winding a conductive wire to form a cross coil. In a pin terminal holding structure of an indicating instrument that holds a pin terminal that is fitted into a through hole and has one end of the conductor wire fixed, the pin terminal is the pin terminal after the pin terminal is fitted into the insertion hole. It comprises a biasing member which gives a biasing force for fixing and holding it in the insertion hole.

According to the first aspect of the present invention, the biasing member of the pin terminal provides a biasing force for fixing and holding the pin terminal in the insertion hole after being fitted and inserted in the insertion hole.
Therefore, the pin terminal is always abutted against and fixedly held by the holding flange in the through hole, and the occurrence of rattling can be suppressed.

According to a second aspect of the present invention, in the first aspect of the present invention, the biasing member is formed integrally with the tip portion of the pin terminal, and the tip portion of the pin terminal is inserted into the through hole. By bending the tip end portion toward the center of the coil bobbin body by a predetermined angle, the biasing member abuts the holding flange, and applies a biasing force for fixing and holding the pin terminal in the insertion hole. To configure.

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the tip portion of the pin terminal is inserted into the through hole, and the tip portion is bent at a predetermined angle toward the center of the coil bobbin body. By bending, the biasing member abuts the holding flange, and provides a biasing force for fixing and holding the pin terminal in the insertion hole.
The pin terminal is always in contact with the holding flange in the through hole, and it is possible to suppress the occurrence of rattling.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the biasing member is made of an elastic material having a predetermined elasticity. According to the invention of claim 3, in addition to the action of the invention of claim 1 or claim 2, since the biasing member is made of an elastic material having a predetermined elasticity, it is ensured by its elastic force. Can give a bias to.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the biasing member is provided with a substantially U-shaped notch at the tip of the pin terminal. It is formed by bending the pin terminal portion inside the cutout portion in a predetermined direction. According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the biasing member is provided with a substantially U-shaped notch at the tip of the pin terminal. Since it is formed by bending the pin terminal portion inside the portion in a predetermined direction, the manufacturing process is simplified.

According to a fifth aspect of the present invention, in the invention according to any one of the first to third aspects, the urging member has a substantially V-shaped cross section, and is provided at the tip of the pin terminal. It is configured to be bonded or joined. According to the invention described in claim 5, in the invention described in any one of claims 1 to 3, the biasing member has a substantially V-shaped cross section, and is adhered or bonded to the tip portion of the pin terminal. Therefore, it is possible to form it with a material different from that of the tip of the pin terminal, and it is possible to select the material that gives the biasing force without being affected by the material of the tip of the pin terminal. it can.

[0018]

Preferred embodiments of the present invention will now be described with reference to the drawings. First Embodiment FIGS. 1A and 1B are external views of a pin terminal before being attached to a holding flange of a coil bobbin. FIG.
1A is a side view, and FIG. 1B is a front view.

The pin terminal 1 is roughly classified into a tip portion 2 and a tip portion 2 to which the conducting wires of the cross coil are entangled and soldered.
The spring member 3 which is integrally formed with the spring member 3 and which contacts the holding flange by bending the tip portion 2 toward the rotation axis side of the coil bobbin and the pin terminal (male side terminal) provided on the HPC (Hard Printed Circuit) board. Fitting part 4 for mating
And a main body 5 having a (female side terminal) at the terminal end.

The tip portion 2 is provided with a entwining portion 2A in which the conductors forming the cross coil are entangled. Next, a method for assembling the cross-coil type indicating instrument will be described with reference to FIG. FIG. 2 shows an external view of a general cross-coil type indicating instrument during assembly.

The movement 11 of the indicating instrument has a cylindrical shield case 12 having an open upper end,
A coil bobbin 13 is accommodated inside the shield case 12. The coil bobbin 13 has a conductor R (see FIG. 2) so that two coils (not shown) are orthogonal to each other.
(See (c)) is wound and is attached to the center of a disk-shaped magnet rotor (not shown).
Is rotatably provided, and a pointer (not shown) is attached to the tip of the rotary shaft 14.

Further, a pair of holding flanges 16 projecting outward from the shield case 12 are integrally formed at diametrically symmetrical positions on the peripheral edge of the coil bobbin 13. As shown in FIG. 2A, the holding flange 16 is provided with a through hole 16A into which the pin terminal 1 is inserted.

The tip portion 2 side of the pin terminal 1 is inserted from the lower opening 16A1 side of the through hole 16A of the holding flange 16 toward the upper opening 16A2 side, and the abutting portion 2 of the pin terminal 1 is inserted.
B is brought into contact with the contact surface 16B in the through hole 16A. FIG.
(B) shows a state in which the contact portion 2B of the pin terminal 1 is in contact with the contact surface 16B in the through hole 16A.

In this state, one end of the conducting wire R forming the cross coil is entangled with the entanglement portion 2A to perform soldering. Then, as shown in FIG. 2C, the tip portion 2 of the pin terminal 1 is bent toward the rotary shaft 14 side, and the spring member 3 is held by the holding flange 16.
The upper surface 16C.

As a result, due to the elastic force of the spring member, as shown in FIG.
In (c), the pin terminal 1 is pushed up in the direction of the arrow X, and the contact portion 2B of the pin terminal 1 has the through hole 16 of the holding flange 16.
The state of being in contact with the contact surface 16B in A is maintained. Therefore, it is possible to suppress rattling of the pin terminal 1 with respect to the holding flange 16, and it is possible to prevent disconnection of the conductor wire R soldered to the entangled portion 2A.

FIG. 3 shows a case where the movement 11 is attached to the HPC board. As shown in FIG. 3, the fitting portion 4 of the movement 11 is fitted to the pin terminal 21 provided upright on the HPC board 20, so that the conductor R of the crossing coil is not shown on the HPC board 20 side. It is electrically connected to the circuit through the pin terminal 1, and various displays can be performed.

When the movement 11 is mounted as an on-vehicle device, rattling between the holding flange 16 and the pin terminal 1 occurs due to vibration of the vehicle transmitted to the movement 11 via the HPC board 20. It is possible to suppress the disconnection of the conductive wire R, and it is possible to extend the device life of the movement 11.

As described above, according to this embodiment.
For example, pin terminals and holding flanges that make up the movement
To prevent rattling between the conductors and to prevent wire breakage
Improve the reliability of the cross coil type indicator and
It is possible to prolong life. Second embodiment In the first embodiment, the fitting portion of the pin terminal is female.
Although the mold terminal was configured, the second embodiment is a pin terminal.
In the embodiment in which the fitting part of is configured as a male terminal
is there.

FIG. 4 shows an external view (side view) of the pin terminal of the second embodiment. The pin terminal 31 is roughly classified into a tip portion 32 to which the conducting wire of the cross coil is entangled and soldered.
And a spring member 33 which is formed integrally with the distal end portion 32 and which is brought into contact with the holding flange by bending the distal end portion 32 toward the rotation axis side of the coil bobbin, and for fitting into the female side terminal provided on the HPC board. And a main body portion 35 having the fitting insertion portion 34 (male side terminal) at the terminal end portion thereof.

The tip end portion 32 is provided with a entwining portion 32A in which the wires forming the cross coil are entangled. In FIG. 5, a movement 41 is constructed using the pin terminal 31 described above.
The case where this movement 41 is attached to the HPC board is shown.

As shown in FIG. 5, by fitting the fitting insertion portion 34 of the pin terminal 31 constituting the movement 41 into the female terminal 51 erected on the HPC board 50, the conducting wire R of the cross coil is formed. , Is electrically connected to an electric circuit (not shown) on the HPC board 50 side via the female terminal 51, and various instructions can be given.

Also in this case, as in the case of the first embodiment, when the movement 41 is mounted as a vehicle-mounted device, the movement 41 is mounted via the HPC board 50.
To the holding flange 4 due to the vibration of the vehicle transmitted to the
When the spring member 33 of the pin terminal 31 comes into contact with the upper surface 42A of the second terminal 2, the contact portion 32B of the pin terminal 31 is brought into contact with the contact surface 42B in the through hole of the holding flange 42 and the holding flange 42 and the pin terminal. It is possible to suppress rattling that occurs between the wire 31 and the wire 31, suppress wire breakage of the conductive wire R, and extend the device life of the movement 41.

As described above, according to the second embodiment, the rattle between the pin terminals and the holding flange constituting the movement is suppressed to prevent the breakage of the conducting wire, thereby making it possible to perform the cross coil type instruction. Improve the reliability of the instrument,
It becomes possible to extend the life. Third Embodiment In the above first and second embodiments, the tip portion of the pin terminal and the spring member are integrally formed, but in the third embodiment, the pin terminal and the spring member are separate members. It is an embodiment in the case of being configured.

FIG. 6 shows an external view of the pin terminal of the third embodiment. The pin terminal 61 is roughly classified into a pin terminal body 62.
And a spring member 63 which has a substantially V-shaped cross section, is welded or bonded to the pin terminal body 62, and is brought into contact with the holding flange.

In the pin terminal body 62, the lead wire 64 of the cross coil is entangled and soldered, and the fitting portion 65 for fitting into the pin terminal (male side terminal) provided on the HPC board. (Female side terminal),
The entanglement portion 64A in which the conductors that form the cross coil are entangled is provided.

Even when the movement is constructed by using the pin terminal 61, as in the first and second embodiments, the spring member 63 is brought into contact with the upper surface of the holding flange to bring the pin terminal 61 into contact. The contact of the portion 64B with the contact surface in the through hole of the holding flange can suppress rattling between the pin terminal and the holding flange to suppress disconnection of the lead wire, and reliability of the cross coil type indicator. Can be improved and the life can be extended.

Further, since the spring member 63 is adapted to be bonded or joined to the tip portion 64 of the pin terminal 61,
It is also possible to form it with a material different from that of the pin terminal tip portion 64, and it is possible to select a material that gives a biasing force without being affected by the material of the pin terminal tip portion 64 so much more reliably. A biasing force can be applied and the occurrence of rattling can be reliably suppressed.

In each of the above embodiments, the spring member is
Almost rod-shaped, but holding flange (coil bobbin)
Various shapes can be adopted as long as they are in contact with the upper surface side of the above and can apply a force to the pin terminal in the same direction as the inserting direction into the holding flange. Fourth Embodiment In each of the above-described embodiments, the pin terminal is inserted into the holding flange from below in the drawing, but the fourth embodiment is an embodiment in which the pin terminal is inserted into the holding flange from above. is there.

7 (a) and 7 (b) are external views of the pin terminals before they are attached to the holding flange of the coil bobbin. 7A is a side view and FIG. 7B is a front view.
The pin terminal 71 is roughly divided into a tip portion 72 to which the conducting wire of the cross coil is entangled and soldered, and the tip portion 72 is formed integrally with the tip portion 72. Member 73 that comes into contact with the holding flange by
And a main body 75 having a fitting locking portion 74 (female side terminal) for fitting with a pin terminal (male side terminal) provided on the HPC board and locking with the holding flange at the end portion.
And is provided.

The tip portion 72 is provided with a entwining portion 72A in which the conductors forming the cross coil are entangled. The fitting locking portion 74 includes a locking portion 74A that locks in a recess for engagement in a holding flange described below to prevent the locking flange from falling off, and a fitting portion 74B that fits into a pin terminal provided on the HPC board. It is configured with.

FIG. 8 shows a case where the movement 11A having the pin terminals 71 is attached to the HPC board. A pair of holding flanges 76 projecting outward from the shield case 12 are integrally formed at diametrically symmetrical positions on the peripheral edge of the coil bobbin 13 of the movement 11A.

The holding flange 76 has a pin terminal 71.
A through-hole 76A for inserting is inserted. The fitting locking portion 74 side of the pin terminal 71 is inserted from the upper opening 76A1 side of the through hole 76A of the holding flange 76 toward the lower opening 76A2 side while pushing the locking portion 74A toward the rotary shaft 14 side, and the pin terminal 71 is inserted. One end of 71 is brought into contact with the contact surface 76B in the through hole 76A.

As a result, the locking portion 74A of the pin terminal 71
The elastic force causes the engaging concave portion 76C provided on the side surface of the through hole 76A to return to its original shape, and comes into contact with the contact surface (upper side of the drawing) 76C1 of the engaging concave portion 76C. Then, the tip portion 72 of the pin terminal 71 is attached to the rotary shaft 14
The spring member 73 on the upper surface 7 of the holding flange 76.
When it is brought into contact with 6D, the elastic force of the spring member 73 causes it to move as shown in FIG.
In the middle, the pin terminal 71 is pushed up in the direction of the arrow X1 so that the locking portion 74A of the pin terminal 71 can be more surely brought into contact with the contact surface 76C1.

Therefore, the holding flange 76 of the pin terminal 71 is
It is possible to suppress rattling with respect to the entwined portion 72A
It is possible to prevent disconnection of the conductor wire R soldered to. As described above, according to the fourth embodiment,
By suppressing rattling between the pin terminals and the holding flange constituting the movement and suppressing disconnection of the lead wire, it is possible to improve the reliability of the cross-coil type indicating instrument and extend its life.

[0045]

According to the first aspect of the present invention, the urging member contacts the holding flange after being fitted into the insertion hole,
Since the biasing force for fixing and holding the pin terminal in the insertion hole is applied, the pin terminal always comes into contact with the holding flange in the through hole, and it is possible to suppress the occurrence of rattling. It is possible to suppress the influence of rattling on the conducting wire fixed to the wire, prevent the wire from breaking, improve the reliability of the movement and thus the cross-coil type indicating instrument, and prolong the life thereof.

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the tip portion of the pin terminal is inserted into the through hole, and the tip portion is bent at a predetermined angle toward the center of the coil bobbin main body. As a result, the biasing member comes into contact with the holding flange and provides a biasing force for fixing and holding the pin terminal in the insertion hole. Since it comes into contact with the holding flange, the occurrence of rattling can be suppressed, the disconnection of the conducting wire can be prevented, the reliability of the movement and thus the cross coil type indicating instrument can be improved, and the life can be extended.

According to the invention of claim 3, in addition to the action of the invention of claim 1 or claim 2, since the biasing member is made of an elastic material having a predetermined elasticity, its elasticity The force can surely apply the urging force, and the occurrence of rattling can be surely suppressed.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the biasing member is provided with a substantially U-shaped notch at the tip of the pin terminal. Since it is formed by bending the pin terminal portion inside the cutout portion in a predetermined direction, the manufacturing process can be simplified without increasing the number of parts.

According to a fifth aspect of the present invention, in the invention according to any one of the first to third aspects, the urging member has a substantially V-shaped cross section, and is provided at the tip of the pin terminal. Since it is glued or bonded, it can be made of a material different from that of the pin terminal tip, and the material that gives the biasing force can be selected without being significantly affected by the material of the pin terminal tip. Therefore, the biasing force can be applied more reliably, and the occurrence of rattling can be reliably suppressed.

[Brief description of the drawings]

FIG. 1 is an external view of a pin terminal according to a first embodiment.

FIG. 2 is an explanatory view of the assembly process of the movement.

FIG. 3 is an explanatory view of a mounting state of the movement according to the first embodiment.

FIG. 4 is an external view of a pin terminal according to a second embodiment.

FIG. 5 is an explanatory view of a mounting state of the movement according to the second embodiment.

FIG. 6 is an external view of a pin terminal according to a third embodiment.

FIG. 7 is an external view of a pin terminal according to a fourth embodiment.

FIG. 8 is an explanatory view of an attached state of the movement of the fourth embodiment.

FIG. 9 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 1 Pin Terminal 2 Tip Part 2A Entangled Part 2B Abutment Part 3 Spring Member 4 Fitting Part 5 Main Body Part 11 Movement 12 Shield Case 13 Coil Bobbin 14 Rotating Shaft 16 Holding Flange 16A Through Hole 16B Abutment Surface 16C Top of Holding Flange 31 Pin terminal 32 Tip part 32A Engagement part 32B Abutment part 33 Spring member 34 Fitting insertion part 35 Main body part 61 Pin terminal 62 Pin terminal body 63 Spring member 64 Tip part 64A Entangling part 64B Abutment part 65 Fitting part 71 Pin Terminal 72 Tip part 72A Entangling part 73 Spring member 74 Fitting locking part 75 Main body part 76 Holding flange 76A Through hole 76C Engagement concave part

Claims (5)

[Claims] 1. A pin terminal fitted into a through hole provided in a holding flange formed in a peripheral portion of a coil bobbin main body for winding a conductor wire to form a cross coil, and fixing one end of the conductor wire. In the pin terminal holding structure of the indicating instrument for holding, the pin terminal includes a biasing member that gives a biasing force for fixedly holding the pin terminal in the insertion hole after being fitted into the insertion hole. A pin terminal holding structure for an indicating instrument, which is characterized in that 2. The pin terminal holding structure for an indicating instrument according to claim 1, wherein the biasing member is integrally formed with a tip portion of the pin terminal, and the tip portion of the pin terminal is inserted into the through hole. Then, by bending the tip end portion toward the center of the coil bobbin body by a predetermined angle, the biasing member comes into contact with the holding flange, and gives a biasing force for fixing and holding the pin terminal in the insertion hole. A pin terminal holding structure for an indicating instrument, which is characterized in that 3. The pin terminal holding structure for an indicating instrument according to claim 1, wherein the biasing member is made of an elastic material having a predetermined elasticity. Terminal holding structure. 4. The pin terminal holding structure for an indicating instrument according to claim 1, wherein the biasing member is provided with a substantially U-shaped cutout portion at a tip end portion of the pin terminal. A pin terminal holding structure for an indicating instrument, which is formed by bending a pin terminal portion inside the cutout portion in a predetermined direction. 5. The pin terminal holding structure for an indicating instrument according to any one of claims 1 to 3, wherein the biasing member has a substantially V-shaped cross section, and a tip portion of the pin terminal is provided. A pin terminal holding structure for an indicating instrument characterized by being bonded or joined.