JP2514462Y2 - Cross coil type indicator - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross-coil type indicator instrument, and more particularly to a compact type cross-coil indicator instrument capable of properly winding a coil around a coil bobbin having posts having different heights. .

[0002]

2. Description of the Related Art Generally, a current that changes in accordance with a measurement amount is applied to a pair of coils that generate mutually orthogonal magnetic fields, and a magnet rotor is rotated in the direction of a synthetic magnetic field of the magnetic fields generated by the pair of coils. In-vehicle indicating instruments having a cross-coil type movement that displays a measured amount by a pointer that rotates together with the magnet rotor are often used. In recent years, in order to arrange various parts such as a totalizer unit around such a movement, a compact type indicating instrument in which the entire movement is formed compactly has been widely used.

FIG. 3 shows such a conventional cross-coil type indicating instrument, in which a coil bobbin 1 is housed inside a case (not shown) of the instrument movement.
An S pole and an N pole are formed inside the coil bobbin 1.
The disk-shaped magnet rotor 7 is housed. Ma
In addition, the magnet rotor 7 has a
The rotary shaft 8 extending in the axial direction of the
One end of the concave rolling shaft 8 penetrates the coil bobbin 1.
Projecting outward. Furthermore, on the coil bobbin 1
Is wound so that the two coils 2 are orthogonal to each other
And a coil bobbin located radially outside the rotary shaft 8.
4 around the outer circumference of 1 for winding the coil 2
Posts 3a, 3b, 3a, 3b are axial directions of the rotary shaft 8.
Direction, that is, it extends along the axial direction of the coil bobbin 1.
Thus, it is erected toward one end side of the rotary shaft 8. this
The posts 3a, 3b, 3a, 3b are mounted on the coil bobbin 1.
At the outer peripheral portion, the rotating direction of the rotating shaft 8, that is, the coil bobbin 1
To the outer peripheral part where the phase is shifted by 90 ° in the circumferential direction of
Each of these posts 3a, 3b has a
A diametrically symmetrical position of the rotary shaft 8 with the rolling shaft 8 in between, that is,
A pair of ports arranged at diametrically symmetrical positions of the irbobin 1.
The strike 3a has a coil bobbin more than the other pair of posts 3b.
The height of the shaft 1 in the axial direction is large. Ma
Also, outside the higher post 3a of the coil bobbin 1.
A terminal mounting portion 4 is integrally formed at one location of the coil bobbin of the above, and a pin terminal 5 is mounted on the terminal mounting portion 4 so as to penetrate the terminal mounting portion 4 substantially in parallel with the post 3. ing. Further, the end portion of the coil 2 is wound around the tip portion of the pin terminal 5, and the end portion of the coil 2 is fixed to the pin terminal 5 portion with solder. There is.

The magnet rotor 7 includes the coil 2
When the coil 2 is not energized, it is freely rotatable about the rotating shaft 8 and is energized to the coil 2 so that it can be rotationally driven by a predetermined angle. So
And a rotating shaft that penetrates the coil bobbin 1 and projects outward
A hairspring 9 whose one end is connected to the high post 3 a of the coil bobbin 1 is fixed to one end of 8 ,
The balance spring 9 energizes the rotating shaft 8 so as to return to a predetermined 0 position in a state where the coil rotor 2 is not energized and the magnet rotor 7 can freely rotate in the concave direction.

The movement constructed as described above is
The hard printed wiring board (not shown) is fixed to the upper surface, and the other end of the pin terminal 5 is connected to the hard printed wiring board. A dial (not shown) having a light guide plate on the back is attached to the upper surface of the movement, and a pointer (not shown) is fixed to the portion of the rotary shaft 8 protruding from the dial. Has been done. Further, by arranging an integrating meter unit or the like (not shown) above the post 3b having a low height, it is possible to save the space of the movement, and the meter unit is formed by the above-mentioned configuration. Is. The instrument unit is housed in a predetermined instrument case by fixing the rigid printed wiring board to a support post of an instrument case (not shown).

In the above-mentioned conventional indicating instrument, for example,
A predetermined measurement signal such as the speed of the vehicle is input to the rigid printed wiring board, a predetermined process is performed by the printed wiring board, and a predetermined current as a drive signal is passed through the pin terminals 5 to the coils 2 respectively. Is supplied to the magnet rotor 7, and the magnet rotor 7 is rotated by an angle corresponding to the measured amount according to the combined magnetic field of the magnetic fields generated by the coils 2, whereby the rotary shaft 8 is rotated and the tip of the rotary shaft 8 is rotated. The pointer fixed to the part is rotated on the dial to display the measured amount. At this time, the above mustache spring 9
Is a state in which the urging force is gradually accumulated due to the rotation of the rotary shaft 8 and the urging force of the balance spring 9 is applied when the coils 2 are not energized, such as when the vehicle is stopped. The pointer is returned to the 0 position by the power.

[0007]

However, in the above-mentioned conventional cross coil type indicator, the coil bobbin 1 is formed with the post 3b having a small height, and the post 3b having a small height is formed.
Although a totalizing unit or the like is arranged in the portion b to achieve compactness, when the coil 2 is wound around the coil bobbin 1, the dimensional variation of the coil bobbin 1 and the coil bobbin 1 The winding position of the coil 2 with respect to the coil bobbin 1 may be displaced due to displacement during chucking, and as a result, when the coil 2 is wound, the coil 2 rides on the tip of the low post 3b of the coil bobbin 1. Then, with some measure of post 3b
It will be misaligned on the tip surface, and originally,
One of the posts 3a and 3a, the post 3a and the post 3b
The coil 2 to be wound between the
Arises wound, coil <br/> 2 of inferior winding it has the disadvantages that occur between the posts 3b and.

Therefore, conventionally, as shown in FIG.
A winding guide jig 10 having a conical tip is attached to the post 3b having a small height of the coil bobbin 1 so that the height becomes high.
While wearing the, by performing winding operation of the coil 2 to the coil bobbin 1, rose dimension of the coil bobbin 1
Due to sticking or displacement of the coil bobbin 1 when chucking
Therefore, the winding position of the coil 2 with respect to the coil bobbin 1 is displaced.
Even if it does, the conical surface at the tip of the winding guide jig 10
The above-mentioned one post 3 which should originally be wound around the coil 2
Winding failure of coil 2 by guiding it to the side between a and post 3b
It is done to prevent the occurrence.

However, in such a conventional coil winding means, since the winding guide jig 10 is used, it is necessary to attach and detach the winding guide jig 10, and the coil 2 is wound. The work is extremely troublesome and has a disadvantage that the work efficiency is significantly lowered.

The present invention has been made in view of the above points, and the coil is mounted on the post without using a jig.
It is possible to prevent the occurrence of winding defects due to
Moreover, it is an object of the present invention to provide a cross-coil type indicating instrument capable of appropriately winding a coil.

[0011]

In order to achieve the above object, a cross-coil type indicating instrument according to the present invention has a magnet inside.
A coil bobbin that rotatably accommodates the rotor
Four posts for winding a coil around the outer circumference of the coil bobbin are provided on the outer circumference of the coil bobbin located radially outward of the magnet rotor.
Of this post, the pair of posts should be placed in the above-mentioned axial direction from the other pair of posts.
The height of the coil bobbin is reduced, and two coils are wound between the posts of the coil bobbin in a direction orthogonal to each other to form a cross coil. A combined magnetic field of magnetic fields generated by the coils when the coils are energized. Depending on the above magnet
In a cross-coil type indicator that rotates the rotor by a predetermined angle , wind it around the tip of a pair of posts with a low height
The guide surface is formed, and the winding guide surface is
The height is low in the circumferential direction of the magnet rotor.
Close to one of the two posts next to the post
As the height of the post with the above height decreases,
Its characteristic is that it is configured to be inclined so that it becomes extremely low .

[0012]

According to the present invention, in the axial direction of the magnet rotor
The above magnet is attached to a pair of posts with a low height.
Adjacent to the post whose height is low in the circumferential direction of the rotor
As you approach one of the two competing posts
As a result, the height of the post with the above height becomes gradually lower.
Since forming the inclined winding guide surface as by positional deviation or the like during the dimensions of the coil bobbin variation and the coil bobbin chuck, the winding position of the coil relative to the coil bobbin is displaced, the above end of the coil is low post Riding up
Even if had, the coil is guided to the winding guide surface, and one of the post above should be wound around the original wound, wound
The coil will fall into a proper place between the posts formed with the guide surface at the tip, and it is possible to reliably prevent the winding failure of the coil, and to properly wind the coil around the coil bobbin. Is something that can be done.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 show an embodiment of a coil bobbin applied to a cross-coil type indicator according to the present invention. In FIGS. 1 and 2, the same members and locations as those shown in FIG. The same reference numerals as those given in FIG. 3 are used for description. As shown in FIG. 1, inside a coil bobbin 1 housed inside a case of an instrument movement (not shown), a disk-shaped marker having an S pole and an N pole is formed.
The gnet rotor 7 is housed. Also, the above Magne
At the center of the rotor 7,
A rotary shaft 8 extending in the axial direction is attached,
One end of the shaft 8 penetrates the coil bobbin 1 and projects outward.
ing. Further, the coil bobbin 1 is not shown.
The two coils are wound so that they are orthogonal to each other,
Outside of the coil bobbin 1 located outside in the diametrical direction of the rotating shaft 8.
Four posts for winding the above coil around the circumference
3a , 3b , 3a and 3b are in the axial direction of the rotary shaft 8, that is,
Rotate so as to extend along the axial direction of the coil bobbin 1.
The shaft 8 is provided upright toward one end side. These posts 3
a, 3b, 3a and 3b are outer peripheral portions of the coil bobbin 1,
In the rotation direction of the rotary shaft 8, that is, in the circumferential direction of the coil bobbin 1.
They are placed in the outer peripheral areas, which are 90 degrees out of phase with each other.
The rotary shaft 8 is sandwiched between these posts 3a and 3b.
And the diametrically symmetrical position of the rotating shaft 8, that is, the coil bobbin
A pair of posts 3a arranged at diametrically symmetrical positions
Is more than the other pair of posts 3b, as shown in FIG.
The axial height of the coil bobbin 1 is made large.
I have.

Further, in this embodiment , the winding guide surface 11 is formed at the tips of the pair of posts 3b of the coil bobbin 1 having a low height. The winding guide surface 1
1 is the tip of each post 3b, as shown in FIG.
One of the three posts 3a, near the tip of the post 3a
It is provided and as it approaches this one post 3a
The post 3b is tilted so that the height of the post 3b gradually decreases.
Is made. Furthermore, the coil bobbin 1 has a higher height.
A terminal mounting portion 4 is integrally formed at one location on the coil bobbin outside the post 3a, and a pin terminal 5 for connecting the end portion of the coil with solder or the like is mounted on the terminal mounting portion 4. ing.

In this embodiment, the coil bobbin 1 is used.
The winding guide surface 11 is wound around the pair of posts 3b having a small height.
Since the coil bobbin 1 is formed, the winding position of the coil with respect to the coil bobbin 1 is deviated due to the dimensional variation of the coil bobbin 1 and the positional deviation of the coil bobbin 1 during chucking , and the coil runs onto the tip of the low post 3b . even if the coil is guided to the winding guide surface 11, becomes the coil that writes drop in proper position between the upper SL one post 3a and post 3b to be wound originally wound, inferior winding of the coil It is possible to reliably prevent the occurrence of.

Therefore, in this embodiment, the winding guide surface 11 formed on the low post 3b prevents the winding defect of the coil from occurring even when the winding position of the coil with respect to the coil bobbin 1 is deviated. Therefore, the coil can be properly wound around the coil bobbin 1. Moreover, since a winding guide jig is not required as in the conventional case, the coil winding work can be easily performed, and the work efficiency of the coil winding work can be significantly improved. It should be noted that the present invention is not limited to the above embodiment, but can be variously modified as necessary.

[0017]

[Devised effect above the cross coil type indicating instrument according to the present invention, as mentioned, formed on the pair of posts low <br/> height dimension in the axial direction of the magnet rotor, said the magnet
For posts with a low height in the circumferential direction of the rotor
Nitsu to approach the hand of the post one of the two posts adjacent to each other
Therefore, the height of the post with a low height is gradually reduced.
The winding guide surface inclined like this shifts the winding position of the coil with respect to the coil bobbin, resulting in a post with a low coil.
Even when it rides on the tip of the coil, it is possible to prevent the winding failure of the coil, so that the coil can be properly wound around the coil bobbin. In addition, since a winding guide jig is not required unlike the conventional case, the coil winding work can be easily performed, and the work efficiency of the coil winding work can be significantly improved. .

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a coil bobbin applied to a cross coil type indicator according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a partial half-section front view showing a conventional cross-coil type indicating instrument.

FIG. 4 is a front view showing a state in which a winding guide jig is attached to a conventional coil bobbin.

[Explanation of symbols]

 1 coil bobbin 3 post 4 terminal mounting part 5 pin terminal 11 winding guide surface

Claims (1)

(57) [Scope of utility model registration request] 1. A magnet rotor is rotatably housed inside.
With the coil bobbin in the outside,
The outer periphery of the coil bobbin located towards this coil
Four posts for winding the coil around the outer circumference of the bobbin are erected along the axial direction of the magnet rotor , and a pair of posts in this boast are arranged in the axial direction from the other pair of posts. The height dimension at
Two coils are wound between the posts of the coil bobbin in a direction orthogonal to each other to form a cross coil, and the magnet rotor is set to a predetermined size according to a combined magnetic field generated by the coils when the coils are energized. Rotate by angle
In the cross-coil type indicator , the winding guide surface is attached to the tip of the pair of posts with low height.
And the winding guide surface in the circumferential direction of the magnet rotor.
The two posts that are adjacent to the post with the low height above
Height of one of the posts
The height of the post with a low
Form a cross coil type indicating instrument, characterized in that.