JP3473895B2 - Cross-coil movement - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross-coil type movement, and more particularly to a cross-coil type movement in which a coil wound around a bobbin does not easily break during the manufacturing process.

[0002]

2. Description of the Related Art FIG. 4 shows a cross-coil type movement 40 applied to various analog type meters installed in, for example, an automobile. This cross-coil movement
40 is a bobbin capable of attaching a pointer (not shown) to the support shaft 41.
42, a holding flange 43 protruding from the bobbin 42, and a bobbin
It is configured to include a bottomed cylindrical shield case 44 that accommodates 42. The cross-coil movement 40 is fixed to the circuit board 50, and the holding flange
A dial 51 is attached along 43. The bobbin 42 is housed in the shield case 44 such that the holding flange 43 engages with the opening edge portion of the shield case 44 after the coil 45 is cross-wound so that the holding flange 43 is exposed on the outside thereof. In the holding flange 43, the terminal 47 is inserted into a through hole 46 formed in parallel with the support shaft 41, and a guide surface 48 along a plane orthogonal to the support shaft 41 extends from the opening of the through hole 46 to the bobbin 42.
Is formed toward.

The terminal 47 is formed in a substantially rectangular tube shape, and both ends thereof project from the through hole 46. This terminal
One of the connecting portions 47A (lower end in the figure) of the 47 has a circuit board 50.
The terminal 45A is connected to the pin terminal 52 standing upright from the coil in a substantially nested manner, and the end 45A of the coil 45 is vertically connected and fixed to the other coil connecting portion 47B (upper end in the figure) by lapping and soldering. There is. In order to prevent such a terminal 47 from interfering with the dial 50 arranged along the holding flange 43 and securely fix the terminal 47 to the holding flange 43, the coil connecting portion 47B of the terminal 47 has a holding flange. The terminal 47 is bent substantially at a right angle along the horizontal upper surface 48 of the terminal 47 from the bent base point 47C (see the arrow in the figure).

[0004]

By the way, when the coil connecting portion 47B of the terminal 47 is bent from the vertical state so as to be overlapped on the horizontal upper surface 48 through the bending base point 47C, the coil 45 having a play causes the terminal 47 to bend. The coil connecting portion 47B and the horizontal upper surface 48 may be sandwiched by the coil connecting portion 47B and the coil 45 may be partially broken or bent (see the left side in the drawing).
The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a cross-coil movement in which a coil is less likely to break during a manufacturing process.

[0005]

According to the first aspect of the present invention, there is provided a bobbin capable of mounting the pointer on a spindle for driving the pointer of an analog type instrument, and the bobbin protruding from the bobbin. A holding flange, a coil that is cross-wound outside the bobbin so that the holding flange is exposed, and a terminal inserted through a through hole provided in the holding flange, and a coil connecting portion of the terminal. Is a cross-coil movement that is connected to the coil and is bent in a direction approaching the bobbin along a plane orthogonal to the support shaft, the escape being separated from the coil connecting portion. A portion is provided on the holding flange, the escape portion is open toward the bobbin ,
The escape portion is formed by bending the terminal from the vicinity of the opening of the through hole.
It is formed so that it intersects with the bending direction at a predetermined angle.
It can be solved by a cross coil type movement characterized by having a flank .

As the escape portion, a structure in which a rectangular step is provided at a predetermined position of the holding flange, a structure in which an inclined surface with respect to the coil connecting portion of the terminal is provided, or the like can be adopted. It may be formed so that a gap larger than at least the wire diameter of the coil can be obtained so that the coil that has entered between and is not pinched. In the cross coil type movement configured in this way,
Since at least a part of the escape portion is provided so as to be separated from the coil connecting portion, even when the coil with play partially enters between the holding flange and the coil connecting portion when the coil connecting portion is bent, Since the parts are not clamped, the conventional problems can be solved.

Further, in this cross coil type movement , as described in claim 1, the relief portion is formed so as to intersect at a predetermined angle with respect to the bending direction of the terminal from the vicinity of the opening of the through hole. It may have a flank. Here, the clearance surface may be a flat surface, an arc surface, or a spherical surface, and may be provided with the opening edge portion of the through hole as a starting point, or a position away from the opening edge portion of the through hole as a starting point. It may be provided. In the cross-coil type movement having such a configuration, the flanks intersect at a predetermined angle with respect to the bending direction of the terminal. Therefore, for example, if the starting point of the flanks is set at the opening edge of the through hole,
When the coil connecting portion of the terminal is bent at a desired angle, a large amount of bending can be performed in consideration of springback.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view partially sectioned to show an example of the form of a cross-coil movement according to the present invention, and FIGS. 2 and 3 are cross-sectional views of essential parts showing a modified example of the present invention. In the embodiments described below, the members and the like already described in FIG. 4 are denoted by the same reference numerals or corresponding reference numerals in the drawing to simplify or omit the description.

As shown in FIG. 1, a cross-coil type movement 10 according to an embodiment of the present invention supports a pointer for driving an analog type instrument installed in an automobile or the like.
A bobbin 42 that can be attached to 41, a holding flange 13 that projects from the bobbin 42, a coil 45 that is cross-wound outside the bobbin 42 so that the holding flange 13 is exposed, and a through hole provided in the holding flange 13. Terminal 47 that is inserted through 46 and protrudes
It is configured to include and. The terminal 47 is the coil connecting portion 47.
B is connected to the coil 45 and the holding flange 13
It is bent in a direction approaching the bobbin 42 along a horizontal upper surface 48 provided on the.

In the cross-coil type movement 10 of this embodiment, the holding flange 13 is provided with the escape portion 20 according to the present invention. The flank portion 20 has a flank 21 that is separated from the coil connection portion 47B of the terminal 47. This flank 21 starts from the opening edge of the through-hole 46 and is a horizontal upper surface 48.
It is a flat surface that intersects at an angle of 10 to 30 degrees. Such an escape portion 20 is, so to speak, a coil connecting portion 47.
It opens toward B and the bobbin 42.

Cross coil type movement as described above
According to the tenth aspect, since the holding flange 13 is provided with the relief portion 20, when the coil connecting portion 47B of the terminal 47 is bent at a substantially right angle, the coil 45 in which play is caused is partially caused by the coil connecting portion 47B and the holding flange. Even if the coil 45 gets inside, there is no risk of the coil 45 being pinched and breaking or bending. In particular,
The clearance portion 20 is provided so that the flat clearance surface 21 intersects the horizontal upper surface 48 at an angle of 10 to 30 degrees with the opening edge portion of the through hole 46 as a starting point, and thus the coil connection portion.
When the 47B is bent at a desired angle, the coil connecting portion 47B can be bent in a large amount in consideration of the spring back.

The cross-coil type movement of the present invention is not limited to the above-mentioned embodiment, but can be appropriately modified and improved. For example, as the relief portion in the present invention, the relief portion 20A shown in FIG. 2 or the relief portion 20A shown in FIG.
It also includes the escape portion 20B shown in FIG.

That is, the relief portion 20A shown in FIG. 2 is provided with the flat relief surface 21A as a starting point at a position away from the opening edge portion of the through hole 46. On the other hand, the relief portion 20B shown in FIG.
Is provided so that the flat flank 21B extends along a plane orthogonal to the support shaft 41. The relief portions 20A and 20B can also achieve the same effect as the above-described embodiment.

[0014]

As described above, the cross coil type movement of the present invention drives the pointer of an analog type instrument.
Bobbin that can be attached to the support shaft
And a holding flange protruding from the bobbin, and the holding
Cross winding on the outside of the bobbin so that the flange is exposed
Coil and through hole provided in the holding flange
And a coil connection part of the terminal.
While being connected to the coil,
Bend along the orthogonal plane toward the bobbin
A cross coil type movement that is
The relief part that is separated from the coil connection part is the holding flange.
Is provided on the base, and the relief portion is opened toward the bobbin.
The relief part is located in front of the vicinity of the opening of the through hole.
Make sure that the terminals intersect at a predetermined angle with respect to the bending direction.
Since it has a flank formed on the terminal, when the coil connection part of the terminal is bent at a substantially right angle, the coil with play partially enters between the coil connection part and the holding flange, which causes disconnection of the coil. -No bending occurs. Further, according to the present invention , since the flank of the clearance portion is provided so as to intersect the bending direction at a predetermined angle with the opening edge portion of the through hole as a starting point, when the terminal is bent at a desired angle. Also, considering the spring back, it is possible to bend a lot.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing an example of the form of a cross-coil movement according to the present invention.

FIG. 2 is an enlarged view of a main part showing a modified example of the present invention.

FIG. 3 is an enlarged view of a main part showing a modified example of the present invention.

FIG. 4 is a partial cross-sectional view showing a conventional cross-coil movement.

[Explanation of symbols]

10 Cross-coil movement 20 escape area 21 flat surface 41 spindle 42 Bobbin 43 retaining flange 45 coils 46 through hole 47 terminals 47B coil connection

Claims (2)

(57) [Claims] 1. A bobbin capable of mounting the pointer on a spindle for driving a pointer of an analog type instrument, a holding flange protruding from the bobbin, and an outside of the bobbin so that the holding flange is exposed. It has a coil wound crosswise and a terminal inserted in a through hole provided in the holding flange, and a coil connection part of the terminal is connected to the coil and is orthogonal to the spindle. A cross-coil movement that is bent in a direction of approaching the bobbin along a surface of the holding flange, the escape portion being separated from the coil connection portion is provided on the holding flange, and the escape portion faces the bobbin. is open Te, the escape portion is folded in the terminal from the opening near the through hole
It is formed so that it intersects with the bending direction at a predetermined angle.
A cross-coil movement with a flank . 2. The flank portion has a flank surface formed so as to intersect the bending direction of the terminal at a predetermined angle from the vicinity of the opening of the through hole. The described cross-coil movement.