JP2517907Y2 - In-vehicle shift lock solenoid - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted shift lock solenoid, and more particularly to a drive shaft positioning stopper structure.

[0002]

2. Description of the Related Art FIG. 1 is a sectional view showing the structure of a conventional solenoid. In FIG. A fixed iron core and a movable iron core, which are arranged to face each other via a return spring 5, 6 is a yoke (yoke), 7 is a shaft (driving shaft) connected to the movable iron core 4, and 8 is connected to the shaft 7. A load driving joint portion, 9 is a stopper for operating position of the movable iron core 4 or the shaft 7, and 10 is a coil (winding).

When the coil 10 is energized, the solenoid 1 operates by a case 1, a movable iron core 4, a fixed iron core 3 and a yoke 6.
A magnetic circuit is formed between the movable iron core 4 and the movable iron core 4, and the movable iron core 4 is attracted to the fixed iron core 3 side against the spring force of the return spring 5 and moves in the direction of the arrow in the figure. When the coil 10 is de-energized, the movable iron core 4 is returned by the spring force of the return spring 5 until the rear end contacts the stopper 9, and the above reciprocating operation is performed. On the other hand, the shaft 7 and the joint portion 8 also operate in conjunction with the movable iron core 4, but for a shift lock, they are usually attached to the lower end of a vehicle drive shift lever or the like (not shown) to detect a brake state or the like. In conjunction with a signal or the like, for example, when in a brake state, the solenoid coil is energized to allow the shift lever to move forward and backward, and in a non-break state, the coil 10 is de-energized to open the joint portion. The shift lever is operated to lock the operation.

[0004]

However, in order to switch between the locked and unlocked states of the shift lever, accurate positioning of the joint is required. Therefore, as shown in FIG. The stopper 9 provided with the above is fixed to the rear end of the case, or one end of the case is used to form a stopper by resin processing so as not to affect the magnetic circuit. For this reason, there are many drawbacks that the number of components of the solenoid is large and the cost is high, and that the integral molding is poor in workability during resin molding and is costly.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a shift lock solenoid in which a stopper portion can be accurately constructed at low cost.

[0006]

[Means for Solving the Problems] The magnetic circuit is integrally formed with the coil bobbin without separately providing a positioning dedicated component, and the magnetic circuit is provided by partially opening the shaft side of the stopper. . (3)

[0007]

2 (a), 2 (b) and 2 (c) are sectional views, a side view and a perspective view showing the structure of an embodiment of the present invention. In the figure, 11 is a coil bobbin, 11
a is the coil bobbin 1 so as to cover the rear end peripheral surface of the movable iron core 4.
An axially convex positioning stopper portion 11b integrally formed with the reference numeral 1 is a notch portion provided on the peripheral edge of the stopper portion 11a in the axial direction. According to this structure, since the stopper portion is integrally formed with the bobbin, the positioning accuracy when assembled in the case is high, and the assembly can be easily and inexpensively performed. Further, since the case and the notch (opening) for reducing the magnetic resistance in the movable core to prevent the magnetic circuit from lowering are formed at the peripheral edge of the stopper in the axial direction, the torque of the movable core is not affected. , Stable joint operation is possible.

[0008]

As is clear from the above description, according to the present invention, practical effects such as cost reduction and improvement of manufacturing work due to reduction of the number of component parts without deteriorating magnetic characteristics are significant.

[Brief description of drawings]

FIG. 1 is a sectional view of a conventional solenoid

FIG. 2 is a structural view of an embodiment of the present invention (a) is a sectional view (b) is a side view

FIG. 3 1 is a perspective view of the structure of an embodiment of the present invention.

[Explanation of symbols]

 1 Case 2 Coil bobbin 3 Fixed iron core 4 Movable iron core 5 Return spring 6 Yoke 7 Shaft 8 Joint part 9 Stopper part 10 Coil 11 Coil bobbin 11a Stopper part 11b Notch part

Claims (1)

(57) [Scope of utility model registration request] 1. A magnetic case having a coil bobbin built-in, a fixed core and a movable core facing each other in a hollow portion of the coil bobbin, and a shaft and a load driving joint connected to the shaft in the movable core. In a shift lock solenoid for a vehicle, which is provided with a portion, and which causes a reciprocating motion to be brought closer to the joint portion by excitation by a coil and the action of a return spring, integrally molded with the coil bobbin so as to cover the rear end peripheral surface of the movable iron core. An in-vehicle shift lock solenoid characterized in that a movable iron core or a shaft positioning stopper portion that is convex in the axial direction is provided, and a plurality of cutout portions are provided at the peripheral edge of the stopper portion in the axial direction.