JPH09128082A - Notching mechanism for master controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a notching mechanism capable of extending life and improving a notching sense. SOLUTION: A notching drum 7 is inserted into a rotary shaft 2 through a key 11a and fixed. Plural T-shaped recessed parts 7a are formed on the outer periphery of the drum 7 at a 60 deg. interval. A T-shaped permanent magnet 3 is inserted into each of the recessed part 7a and fixed by a bonding agent. The end face of an iron core 4a of an electromagnet 4 is opposed to the outer periphery of the cylindrical permanent magnets 3. A variable resistor 6 serially connected to the coil 4b of the electromagnet 4 is also connected to a battery 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a notching mechanism for a master controller.

[0002]

2. Description of the Related Art FIG. 3 is a perspective view showing an example of a notching mechanism of a conventional main controller, FIG. 4 is an enlarged view of the AA cross section of FIG. 3, and FIG. 5 is a partially enlarged detailed view of FIG. is there. 3, 4, and 5, bearings 8A, 8B having a substantially convex shape are erected on the driver's cab of a train (not shown) so as to face each other in the left and right directions. A radial bearing 11 is inserted from the opposite side into the central portions of these bearing bases 8A and 8B, and is fixed by a bearing retainer (not shown).

Small-diameter stepped portions formed at both ends of the rotary shaft 2 are press-fitted into these radial bearings 11. On the right side of the intermediate portion of the rotary shaft 2, a handlebar 9 having a substantially convex shape when viewed from the left front and an annular shape when viewed from the axial direction is press-fitted through a key (not shown) and fixed by a set screw (not shown). There is.

A lower end of a handle arm 1c constituting the handle 1 is screwed onto the handle seat 9 and fixed by an adhesive. The upper end of the handle arm 1c is formed in the lower portion of the embedded metal 1b protruding from the lower end of the handle head 1a made of resin, so that the handle arm 1c is screwed into a screw hole and fixed by a set screw (not shown).

A spur gear wheel 12 is press-fitted and fixed to the left side of the intermediate portion of the rotary shaft 2 through a key 11a shown in FIG. 4 and a set screw (not shown). A plurality of trapezoidal teeth 13A are formed on the outer periphery of the wheel 12, and the teeth 13A
A V-shaped valley portion 13B is formed between the portions A.

In the rear right side of the wheel 12 in FIG. 3,
The substantially L-shaped spring support 18 shown in FIGS. 4 and 5 is erected,
The lower end is fixed to the cab frame. A convex portion 18a is formed at the lower left end of the spring support 18 as shown in FIG. 5, and a disc-shaped boss 18b is welded to the upper left side surface.

Of these, the lower end of the lever 15 whose upper end is bent in a U shape is loosely fitted to the convex portion 18a. The lever 15 is connected by a head pin 16 penetrating the lower end of the lever 15 and the protrusion 18a laterally, and a retaining ring (not shown) attached to the right end of the head pin.

A head pin 14 is laterally provided at the center of the lever 15 and is supported by a retaining ring 14a attached to the right end of the head pin 14. The center of this head pin 14 is
In FIG. 4, the trough portion 13B of the wheel 12 is pressed by the restoring force of the compression coil spring 17, which will be described later.

A boss 15a is welded to the rear surface of the upper end of the lever 15 as shown in FIG. This boss 15a has
The inside of the front end of the compression coil spring 17 inserted between the upper end of the lever 15 and the upper end of the spring support 18 is loosely fitted, and the inside of the rear end of the compression coil spring 17 is the front surface of the upper end of the spring support 18. The boss 18
It is loosely fitted in b.

A speed increasing gear train (not shown) is connected to the right end of the rotary shaft 2 via a coupling (not shown). A rotary encoder (not shown) is connected to the speed increasing gear train, and an output signal line of the rotary encoder is connected to an input side of a speed control circuit of a control device that controls the rotation speed of the main electric motor of the train.

In the notching mechanism of the master controller thus configured, when the driver grips the head 1a of the steering wheel 1 and tilts it to the rear right in FIG. 3, a rotary encoder (not shown) rotates, and The rotation angle signal is input to the speed control circuit, and the electric motor of the train is accelerated.
On the contrary, when lowering the traveling speed of the train, the handlebar 1 is tilted to the front side.

During this operation, the driver operates the steering wheel 1
The wheel 12, the headed pin 14, and the compression coil spring 17 are incorporated so that the rotation angle of the wheel can be sensed by the number of step changes, and the compression coil spring 17 and the tooth 13A of the wheel 12 are rotated during rotation of the handle 1. It receives the reaction force that it receives with the feeling of a finger.

However, in the notching mechanism of the main controller having such a structure, when the handle 12 is operated to rotate the wheel 12, the headed pin 14 pressed by the restoring force of the compression coil 17 is moved to the wheel 12. By rolling and sliding on the slopes and tops of the teeth 13A, the surface is worn and fatigued.

At this time, when the teeth 13A fall to the valleys 13B, an impact is generated by the restoring force of the compression coil spring 17. Then, during running of the train for a long period of time, due to repeated wear and impact, the headed pin 14 and the compression coil spring 17 may be fatigued and sheared or cut.

Therefore, the outer circumferences of the wheel 12 and the headed pin 14 are heat-treated to a high hardness by quenching, and lubricating oil is supplied to the contact surface to reduce wear, but nevertheless, for a long period of time. While the vehicle is running, friction and impact may be repeated, which may shorten the life of the vehicle.

Further, since it is necessary to refuel regularly and to clean the tooth surface of the wheel 12, not only maintenance and inspection time becomes long, but also when the head pin 14 collides with the wheel 12. The noise made can not be prevented.

Further, it is conceivable to change the shape of the tooth portion 13A of the wheel 12 from a trapezoidal shape to a sinusoidal shape to reduce impact and noise. Then, a stepwise feeling (so-called notch) when the rotary shaft 2 rotates. There is also a risk of lack of feeling. Therefore, an object of the present invention is to obtain a notching mechanism for a master controller that can prolong the life and enhance notch feeling.

[0018]

According to the notching mechanism of the main controller of the invention described in claim 1, a rotary shaft having both ends rotatably supported, and a plurality of permanent rotors in the circumferential direction on the outer circumference of the rotary shaft. It is characterized in that magnets are arranged and fixed, fixed magnetic pole surfaces are opposed to the outer peripheral surfaces of these rotating permanent magnets, and the base end of the handle is fixed to the rotating shaft.

The notching mechanism of the main controller according to the second aspect of the present invention is characterized in that the rotating permanent magnets are arranged so that the polarities on the adjacent sides are different.

Further, the notching mechanism of the main controller of the third aspect of the present invention is characterized in that the DC electromagnet having the polarities of the magnetic poles arranged in the circumferential direction is the fixed side magnet.

Further, the notching mechanism of the main controller of the invention according to claim 4 is characterized in that a variable resistor is interposed between the exciting coil of the DC electromagnet and the power source.

By such means, a torque in a direction opposite to the rotation direction is generated between the permanent magnet on the rotating side and the magnet on the stationary side in the initial stage of the rotating operation of the rotating shaft, and further torque is generated against this torque. , Rotate to the next notch.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a notching mechanism of a master controller of the present invention will be described below with reference to the drawings. FIG.
FIG. 4 is a diagram showing an embodiment of a notching mechanism of a main controller of the present invention, which corresponds to FIG. 4 shown in the prior art, and other supporting portions of the rotary shaft 2 and a handle mounting structure are shown in FIG. Since it is the same as FIG. 4, it is omitted.

In FIG. 1, FIG. 3 shown in the prior art,
The difference from FIGS. 4 and 5 is that a notching feeling is obtained by a magnetic force, and a permanent magnet, an electromagnet or the like is incorporated. That is, instead of the wheel 12 shown in FIG. 3, a notching drum 7 precision-cast with a high-strength aluminum alloy is press-fitted into the rotary shaft 2 via a key 11a.

The outer circumference of the notching drum 7 is shown in FIG.
The vertical cross-sectional view of (a) is substantially T-shaped, and in FIG. 2 (b) showing the right side view, substantially square recesses 7a are formed in a casting mold at intervals of 60 °.

Ribs 7c are formed between the recesses 7a, and flanges 7d are formed on the left and right outer sides of the recesses 7a.
Are formed between the ribs 7c, and a central recess 7b is formed in the center of the recess 7a.

A permanent magnet 3 having the same shape as that of the recess 7a and having strontium and iron powder dispersed and mixed in nylon is inserted into each of the recesses 7a and fixed by an epoxy resin adhesive. These permanent magnets 3 are magnetized and arranged in advance as shown in FIG.

On the right side of the notching drum 7 incorporating the permanent magnet 3 in FIG. 1, the iron core 4a of the electromagnet 4 is provided.
Are arranged with a slight gap. The winding 4b of the electromagnet 4 is connected to the battery 5 of the DC power source via the variable resistor 6 and the DC contactor 10.

In the notching mechanism of the master controller thus constructed, when the DC contactor 10 is turned on when the handle 1 is vertical as shown in FIG.
And the north and south poles of the electromagnet 4 are reversed, and are attracted, and the handle 1 is maintained in this state.

When the operator rotates the steering wheel 1 about 10 to 15 degrees clockwise, for example, to accelerate or decelerate, the N pole and S phase of the permanent magnet 3 which are placed opposite to each other are changed to the N pole and S pole of the electromagnet 4.
Repulsive force works because it approaches the same pole. When it is further rotated in the clockwise direction against this repulsive force, the polarities of the permanent magnet 3 and the electromagnet 4 are close to each other on the opposite pole side, so that the attraction force acts to bring about the state shown in FIG.

That is, every time the steering wheel 1 is rotated by 60 °, a counterclockwise torque is initially applied, and when the steering wheel 1 is further rotated against this torque, a torque in the rotation direction is exerted, so that the operator is positive. You can feel a strong notching torque in the opposite direction.

This notching torque is an electromagnetic force,
Since no mechanical sliding or collision is involved, no wear or impact due to notching does not occur, and there is no reduction in service life due to long-term operation. Moreover, maintenance and maintenance are not required because refueling and cleaning are not required.
Not only is inspection unnecessary, but noise can be eliminated.

In the above embodiment, the number of notches is six, but it is hardly rotated by 360 °. For example, in the case of five notches, one permanent magnet 3 is omitted. A blind plate having the same shape as the permanent magnet 3 may be fixed to the recess 7a with a small screw or the like.

Further, the variable resistor 6 can be adjusted to the delicate notch feeling required by the user by changing the resistance value. Further, in the above-mentioned embodiment, the case where the magnetic pole opposed to the permanent magnet 3 is an electromagnet has been described, but a strong permanent magnet may be used instead of this electromagnet.

[0035]

As described above, according to the first aspect of the present invention,
A plurality of rotating permanent magnets are circumferentially arranged and fixed on the outer circumference of a rotating shaft whose both ends are axially supported, and the magnetic pole surface of the fixed magnet is placed opposite the outer peripheral surface of these rotating permanent magnets. By fixing the base end of the handle, a torque in the direction opposite to the rotation direction is generated between the permanent magnet on the rotating side and the fixed magnet on the rotating side in the initial stage of the rotating operation of the rotating shaft, and further rotation against this torque occurs. Since the next notch is provided, it is possible to obtain the notching mechanism of the main controller that can extend the life and enhance the notch feeling.

According to the second aspect of the invention, the rotating permanent magnets are arranged so that the polarities on the adjacent sides are different from each other, so that the rotating permanent magnet and the fixed magnet are rotated. A torque is generated in the direction opposite to the rotation direction in the initial stage of the shaft rotation operation, and the next notch is created when the torque is further rotated against this torque, so the life span is extended and the notch feel is enhanced. The notching mechanism of the vessel can be obtained.

According to the third aspect of the present invention, the stationary magnet is a DC electromagnet having the magnetic poles arranged in the circumferential direction, so that the stationary permanent magnet and the stationary magnet are rotated. A torque is generated in the direction opposite to the rotation direction in the initial stage of the shaft rotation operation, and the next notch is created when the torque is further rotated against this torque, so the life span is extended and the notch feel is enhanced. The notching mechanism of the vessel can be obtained.

Further, according to the invention of claim 4,
By interposing a variable resistor between the exciting coil of the DC electromagnet and the power supply, between the rotating permanent magnet and the stationary magnet,
At the initial stage of the rotating operation of the rotary shaft, a torque in the opposite direction to the rotation direction is generated, and if the torque is further rotated against this torque,
As it rotates to the next notch, and the torque in the opposite direction and the torque in the opposite direction can be adjusted by the variable resistor, it is possible to obtain the notching mechanism of the main controller that extends the life and improves the notch feeling. .

[Brief description of the drawings]

FIG. 1 is a partial vertical sectional view showing an embodiment of a notching mechanism of a master controller of the present invention.

2 (a) is a partially enlarged detailed view of FIG. 1, and FIG. 2 (b) is
The right side view of the part of (a).

FIG. 3 is a perspective view showing an example of a notching mechanism of a conventional master controller.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a partial detailed perspective view of FIG.

[Explanation of symbols]

1 ... Handle, 2 ... Rotating shaft, 3 ... Permanent magnet, 4 ... Electromagnet, 4a ... Iron core, 4b ... Winding, 5 ... Battery, 6 ... Variable resistor, 7 ... Notching drum, 7a ... Recessed part, 7b ...
Central concave portion, 7c ... Rib portion, 7d ... Flange portion, 8A, 8
B ... Bearing stand, 9 ... Handle seat, 10 ... DC contactor, 11 ... Radial bearing, 12 ... Wheel.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Setsuo Kuwabata No. 1 Toshiba-cho, Fuchu-shi, Tokyo Toshiba Corporation Fuchu factory

Claims (4)

[Claims] 1. A rotary shaft having both ends axially supported, a plurality of rotary permanent magnets circumferentially arranged and fixed on the outer circumference of the rotary shaft, and outer peripheral surfaces and magnetic pole surfaces of these rotary permanent magnets. A notching mechanism for a main controller, which includes a stationary magnet opposed to each other and a handle whose base end is fixed to the rotating shaft. 2. The rotating permanent magnets are arranged so that the polarities on the adjacent sides are different.
Notching mechanism of the master controller described in. 3. The fixed-side magnet is a DC electromagnet having magnetic poles arranged in a circumferential direction.
Alternatively, the notching mechanism of the main controller according to claim 2. 4. A variable resistor is interposed between an exciting coil of the DC electromagnet and a power source.
Notching mechanism of the master controller described in.