JP2901316B2 - Cross-coil instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cross-coil type instrument particularly having a terminal structure.

[Prior Art] As a conventional cross-coil type instrument, there is one having a structure as shown in FIG. 4 and FIG. In FIG. 1, reference numeral 1 denotes a lower housing, and 2 denotes an upper housing. A movable magnet 4 having a pointer shaft 3 fixed in an internal space formed by a combination of the two housings 1 and 2 has a pointer shaft. It is rotatably supported via 3. Outside the housings 1 and 2 are the housings 1 and 2
, And the cross coil 5 is wound and held. 6
Is a meter case, and a lower end of a terminal 8 is fastened to a boss 7 formed in the meter case 6 by a mounting screw 9, and a lead portion 8-1 formed in the terminal 8 is provided. Penetrates through the terminal insertion hole 10 formed in the axial direction of the pair of housings 1 and 2,
The winding end of the cross coil 5 is connected to the penetrated tip by soldering 11. At the lower end of the terminal 8, a claw portion 8-2 for positioning the terminal 8 in the lower housing 1, a connection portion 8-3 for connecting an electric element 12 such as a resistor, and the terminal 8 Is screwed to the meter case 6 and a screw hole 8-4 of the mounting screw 9 serving as an external signal connection portion is formed. Reference numeral 13 denotes a magnetic shield case attached to the outside of the housings 1 and 2 to magnetically shield the cross coil 5 and the rotating body 4.

[Problem to be Solved by the Invention] In the conventional cross-coil type meter, since the terminal 8 is located inside the magnetic shield case 13 as in the above configuration, the terminal 8 uses a rotating magnet. In order to eliminate the magnetic influence, the terminal 8 must be formed of a non-magnetic material such as a brass plate, which increases the cost. The terminal 8 has a complicated shape in which a lead portion 8-1, a claw portion 8-2, and a connection portion 8-3 are integrally formed, and the lead portion 8-1 is formed in the housings 1, 2. It is necessary to reduce the size of the instrument so that it can be accommodated in the terminal insertion hole 10, and particularly when the instrument is downsized, the configuration of the terminal 8 has difficulty in manufacturing. In Terminal 8 above,
Since the connection portion 8-3 of the electric element 12 and the external signal connection portion 8-4 are located close to each other, when the electric element 12 is soldered, the solder or the flux may be removed from the external signal connection portion 8-4. Buried in the screw thread, making screw tightening difficult. Further, at the terminal 8, the electric element 12 is connected at one end.
And soldering to the coil at the other end, the soldering operation must be performed from two directions of the terminal 8, and the soldering operation requires a lot of man-hours. There was a problem.

Means for Solving the Problems The present invention has been made in view of such conventional problems, and a first object of the present invention is to position a coil end and a terminal to which an electric element is to be connected outside a shield case. In order to reduce the cost of the terminal, the terminal is formed by using a low-cost material, for example, a tin plate. A second object is to form a mounting screw screw hole for connecting an external signal at one end of the terminal, and to form a soldering portion for the coil and the electric element at the other end, thereby soldering both the coil and the electric element. The work can be performed at the other end of the terminal so that the workability of soldering is improved, and at the time of the soldering, the solder or flux flows into the screw hole for external signal connection provided at one end. There is to be no.

[Embodiment] The present invention will be described below in detail with reference to the embodiment shown in FIGS. 1 to 3. The same parts of the structure of this embodiment and the structure described in the conventional example will be described in the conventional example. The same reference numerals are used and the description of the same structural parts is omitted.

First, the structure of a terminal 20 for connecting the crossing coil 5 and an external signal will be described. The terminal 20 is used to screw the terminal 20 to the meter case 6 on a mounting surface 20-1 formed at one end thereof. Screw hole 20-2,
A claw portion 20-3 is formed upright from the mounting surface 20-1. In the center of the other end of the terminal 20, a coil connecting piece 20- extending in the longitudinal direction of the terminal 20 is provided.
4 and electric element connection pieces 20-5 located on both sides of the coil connection piece 20-4.

The procedure for assembling the terminal 20 formed in this way is to allow the solder connection portion 20-4 of the terminal 20 to penetrate through the terminal insertion hole 10 formed in advance in the upper housing 2, 2-1 Lock the lower end to the claw portion 20-3. Next, the winding end of the cross coil 5 is entangled with the coil connection piece 20-4 protruding from the insertion hole 10. Also, after the lead wire of the electric element 12 to be connected is entangled with the electric element connection piece 20-5, the lead wire is connected to the connection piece 20-5, and the coil end and the connection piece 20-4 are soldered. Complete the connection between each line and the terminal. Further, the coil connection piece 20-4 is bent at a substantially right angle to allow room for the lead wire. Then, the mounting screw 9 inserted into the meter case 6 is screwed into the screw hole 20-2, and the meter case 6 and the terminal 20 are connected. In this embodiment, the shield case 13 is attached to the housing so as to cover the magnetic circuit of the instrument inside each terminal 20.

As described above, in the present embodiment, the terminal 20 fixed to the meter case 6 and the housings 1 and 2 is arranged outside the magnetic shield case 13 for shielding the magnetic circuit of the meter. The terminal 20 does not adversely affect the magnetic circuit.
The terminal 20 can be formed by using an inexpensive tin plate or the like, so that the terminal 20 can be made more economical. In this terminal structure, one end of the terminal case serves as an external signal connection portion.
After the connection of the coil and the electric element, both of the connection piece 20-4 connecting to the coil end and the connection piece 20-5 connecting to the electric element are provided at the other end of the terminal 20 fixed to Can be performed at the other end of the terminal 20 at the same time, so that the workability of the soldering is improved. Further, since the soldering portion and the external signal connection portion are provided at both ends of the terminal 20, the connection piece 20
At the time of soldering of -4, 20-5, the problem that the solder, flux and the like flow into the screw as the external signal connection portion can be solved.

[Effect of the Invention] As described above, according to the present invention, the pointer shaft 3 to which the pointer is fixed is provided.
A movable magnet 4 fixed to the pointer shaft 3; an upper housing 2 and a lower housing 1 made of a non-magnetic material for rotatably storing and supporting the movable magnet 4; In a cross-coil instrument comprising a plurality of coils 5, 5 wound so as to intersect, and a magnetic shield case 13 for housing the two housings 2, 1 and the plurality of coils 5, 5, Upper housing 2
A mounting column 2-1 is integrally formed with the mounting portion 20-2, and a mounting portion 20-2 engaging with the column 2-1 is provided at one end, and a solder connecting portion 20 for connecting the electric element 12 and the coil 5 is provided at the other end. −4,20−
5 is a cross-coil type instrument provided outside the magnetic shield case 13 with the sheet metal terminal 20 formed thereon. According to this, the terminal 20 fixed to the meter case 6 and the housings 1 and 2 is an instrument. Since the structure is arranged outside the magnetic shield case 13 that shields the magnetic circuit, the terminal 20 does not adversely affect the magnetic circuit.Therefore, even if the terminal 20 is made of a magnetic material, there is no problem. Therefore, the terminal 20 can be formed by using an inexpensive tin plate or the like, and the economy can be improved. In this terminal structure, one end of the terminal 20 is fixed to the meter case 6 as an external signal connection part, and the other end of the terminal 20 is connected to the coil end by a connection piece 20-4.
And the connection piece 20-5 for connecting to the electric element, the soldering after connecting the coil and the electric element can be performed at the other end of the terminal 20 at the same time. Is improved. Further, since the soldering portion and the external signal connection portion are separated from each other at both ends of the terminal 20, when the connection pieces 20-4 and 20-5 are soldered, the soldering, flux and the like are performed. Can be prevented from flowing into a screw which is an external signal connection portion.

[Brief description of the drawings]

FIG. 1 is a cross-sectional explanatory view showing an embodiment of a cross-coil type instrument according to the present invention, FIG. 2 is a perspective view of only a terminal thereof, FIG. 3 is a plan view thereof, and FIGS. It is explanatory drawing of an example. 20 ... Terminal, 20-1 ... Mounting surface 20-2 ... Screw hole, 20-3 ... Claw 20-4 ... Coil connection piece 20-5 ... Electrical element connection piece

Claims (1)

(57) [Claims] 1. A pointer shaft (3) to which a pointer is fixed, a movable magnet (4) fixed to the pointer shaft (3), and a non-magnetic material for rotatably storing and supporting the movable magnet (4). An upper housing (2) and a lower housing (1);
A plurality of coils (5), (5) wound around the outer peripheries of the housings (2), (1) so as to cross each other; and the two housings (2), (1) and the plurality of coils. In a cross-coil instrument provided with a magnetic shield case (13) accommodating the coils (5) and (5), a mounting support (2-1) is formed integrally with the upper housing (2), At one end, a mounting portion (20-2) that engages with the support portion (2-1) is provided, and at the other end, a solder connection portion (20-4, 20-5) with the electric element (12) and the coil (5). ) Formed on the sheet metal terminal (20) is connected to the magnetic shield case (1).
3) A cross-coil type instrument which is arranged outside of (3).