JPS6345822Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a small timer motor used in a timer.

In this type of timer motor, a thick lead wire is directly connected to the coil end of a thin wire wound around a coil bobbin, and the lead wire is drawn out. In such a structure, if the outer end of the lead wire is pulled strongly, the thin wire inside will also be pulled.
There was a danger that the thin wires inside would break. Therefore, in order to solve this problem, a support stand was placed at the outlet of the motor, a thin outlet plate was fixed to it, and the inner end of the outlet plate was attached to one end of the coil, and the other end was attached separately. I was trying to connect the correct lead wire. However, it requires a lot of time and effort to connect, and as the number of connection points increases, the failure rate due to poor connections increases.

Therefore, the present invention was designed to eliminate the above-mentioned problems.It not only prevents the thin wire of the coil from breaking, but also has a compact structure that allows connection between the motor and the clock mechanism with less effort. The aim is to provide a timer motor.

The drawings showing the embodiments of the present application will be described below. 1 shows a case of a commonly known clock mechanism, inside which a cam is fixed to a shaft 2 to which a knob is fixed, as is well known, and a switch etc. which is operated by the cam. It has a built-in clock mechanism. Reference numeral 3 indicates a lead wire drawn out from the case 1, which is normally used for connecting to other controlled objects. Reference numeral 4 indicates a terminal plate projected from the inside of the case 1, to which a lead wire of the motor 5 or other lead wires are connected. A commonly known timer motor 5 is attached to one side of the case 1. Numeral 7 is a set screw for fixing both ends of the motor fastening frame 6 to the case 1, and 8 and the like are side frames for preventing the motor 5 from shifting laterally.
(Detailed explanation will be omitted since the above configuration may be any configuration similar to well-known ones.) Next, 9 is a support base made of an insulating material (synthetic resin material) that protrudes from the motor case. A thin outlet plate 10 made of a conductive material is fixed to this. The fastening structure is fixed so as to pass through the support base 9. 4 and 5 showing the external shape of the outlet plate 10, reference numeral 10 denotes a free end, which is placed parallel to the terminal plate 4 and soldered or spot welded as shown in FIGS. 1 to 3. It is used to connect electrically or mechanically using any connection method. Further, the narrow width portion 11 is provided with cutouts on both sides (or one side is fine) so that the free end 10 can be bent freely as shown in FIG. 2 or FIGS. 6 and 7. By eliminating this, the flexibility of the free end 10 is greatly improved.
Note that since the timer motor only allows a small amount of current to pass through it, it may be completely absent. The base portion 10'' requires a certain degree of mechanical strength, so it is best to leave it intact.Inside the case, the inner end portion 10' of the outlet plate is exposed, and the motor The free ends 18' of the inner coils are connected.Next, the structure of the motor will be explained, but since most of it may be similar to well-known structures, it will be briefly explained.The motor case consists of a pair of cases. It is composed of elements (5' and 5''), and by joining these together, the stator is also constructed,
These have magnetic poles protruding inward from each other. The fixed shaft 13 is fixed to a case element 5'', and a plastic rotor 14 having a pinion 12 is rotatably mounted thereon.A ferrite magnet 15 on the outer periphery has a plurality of magnetic poles. The coil 16 is connected to the flange 1.
It is wound around a bobbin 17 having a diameter of 7',
Its two ends 18' are connected to the outlet plates 10, 10.
are connected to the inner ends 10' of each. Further, as explained in detail in FIGS. 8 and 9, the support stand 9 is molded with an insulating material (synthetic resin material) at the same time as the base stand 9a, and the support stand 9 is formed hollow.
After that, the outlet plate 10 is fitted. However, as is well known, it may be formed by inserting the outlet plate 10. Also, on both upper and lower sides of the base 9a that supports the support stand 9 in FIG. 9, there are claws 9b, respectively.
9c is provided in a protruding manner, and is elastically fitted into through holes 18 and 19 provided in opposing portions of the flange on the bobbin, respectively, thereby allowing the flange and the base 9a etc. to be integrated together. It is being done. Note that the base 9a may be integrally molded with the flange 17' in advance. In the case of integral molding, one end of the base 9a is integrally connected to the flange 17'.
Next, the inner end of the outlet plate is bent at the inside so that it cannot be removed, but this is not necessary if it is molded integrally with the support base.

Next, when the motor shown in FIGS. 4 and 5 is attached to the case of the watch mechanism shown in FIG. If they are placed parallel to the terminal plate 4, it is possible to easily join the two together. Furthermore, even if the terminal board 4 is oriented perpendicularly to that shown in FIG. 1, it can be easily oriented parallel to the terminal board by bending it at the narrow part 11 as shown in FIGS. 7 and 6. The outlet plate with the above structure has a structure that facilitates connection to any next-stage connection point.

As mentioned above, in this invention, bobbin 17
A support stand 9 connected to the bobbin flange 17' is disposed in the radial direction of the bobbin flange 17', and a thin coil end 18' is connected to the inner end 10' of the outlet plate 10 supported by the support stand 9. Because of the structure, no tensile force is directly applied from the outside to the thin coil end 18', and the tensile force from the outside is absorbed by the support base 9 and the large cross-section and strong outlet plate. Since the coil end 18' is caught by the wire 10, breakage of the coil end 18' can be prevented in advance.

In addition, the inner end 10' of the outlet plate is a thin plate with a large area, and also has a mechanically stable position.
There is also the effect that the work of fixing the coil end 18' to this becomes easier (soldering is also easier).

Furthermore, the outlet plate 10 is made flat to have the effect of preventing disconnection of the coil ends and facilitating the connection of the coil ends as described above, and the outer portions 10'', 10
Since the length of is long, the clock mechanism 1 is directly
It is possible to reach the lead connection point 4 at , and there is also an advantage in the connection work that it can be connected to other things with less effort. Further, even if the outlet plate 10 is long, the narrow part 11 is formed in the middle and can be bent freely.
can be oriented in any direction (can be parallel to horizontal planes, vertical planes, or any inclined surface), and can be aligned parallel to the mating object to mechanically connect them completely (highly reliable). This is useful in greatly reducing the defective rate at the joint location. Furthermore, when bending the outlet plate 10 as described above, most of the bending stress (stress concentration) that is largely applied to the base of the outlet plate 10 exposed from the support base 9 is transferred to a position close to the support base 9. This problem can be solved by the narrow portion 11 formed in the narrow portion 11, and it is possible to prevent large bending stress from being applied to the exposed portion from the support base 9, which has the effect of preventing damage and deformation of the support base 9.

Furthermore, because it is flexible as mentioned above, and because the tip 10 is flat, it is practically applicable to any connection method, whether it is soldering, electric spot, or tightening. There is also the effect of

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and Fig. 1 is a front view, Fig. 2 is a right side view, Fig. 3 is a drawing seen from below Fig. 1, and Fig. 4 is a partially cutaway plane of the motor. Figures 5 and 5 are side views, Figures 6 and 7 are exit plate 1.
FIG. 8 is a longitudinal sectional view of the main part of the motor, and FIG. 9 is a perspective view of the coil. 17...Bobbin, 9...Support stand, 10...Output plate, 18'...Coil end, 11...Narrow width part.

Claims (1)

[Scope of utility model registration request] A rotor is disposed in the center of the motor case, which can be attached to a clock mechanism case equipped with a connection terminal plate, and a coil is wound around the rotor. A small timer motor is provided with a flanged coil bobbin, and the rotor is rotated by energizing the coil,
A part of the outer periphery of the flange portion of the coil bobbin is connected and integrated with a base made of an insulating material for supporting a support base, and the base is provided with a support base formed integrally with the base. , the support base is inserted through a part of the motor case, and the support base further includes a plate-shaped exit plate having a cross section significantly larger than the wire diameter of the coil, the inner end of which is exposed to the coil side, The outer end is fixed in a penetrating state that protrudes to the outside of the case, and the end of the coil is connected to the inner end of the outlet plate, while the outlet plate that protrudes from the support stand to the outside of the case is attached to the motor case. is formed to a length sufficient to reach the connection terminal plate when it is attached to the clock mechanism case, and the plate-shaped outlet plate on the outside is close to and in contact with the support base. A small timer motor characterized by having a narrow part that can be bent and folded in a position where it is not open.