JPS5922671Y2 - 2 shaft locking device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a locking device for locking the operation of a main controller in which powering operation and braking operation in an electric vehicle are operated by one main bundle.

The main bundle operation includes a power range and a brake range, which are the driver's normal operating ranges.

However, recently, a new step for ATC switching has been required due to the mutual entry of vehicles.

In other words, a stopper is provided at the emergency position, which is the final step in the brake area, to prevent movement beyond this emergency position to the extraction position, and to prevent movement from the emergency position to the extraction position unless some further action is applied. A need has arisen for a locking device that allows.

This invention was made in view of these points, and the object is to provide a locking device that can simply and reliably satisfy such requirements.

Hereinafter, one embodiment of this invention will be described in detail based on the drawings.

In FIG. 1, 1 is a main bundle shaft connected to an operating bundle (not shown), 2 is a lock collar made of a metal disc that is fitted onto the main bundle shaft 1 and rotates;
Concave first engaging part A, B, C1 second for locking
It has an engaging part E on the same circumference and a third engaging part E protruding in the thickness direction, and directly or indirectly locks a reversing cam 4 and a lock lever 5, which will be described later. It is something.

3 is a reversing bundle shaft that gives forward, neutral (off) or reverse commands for the electric vehicle; 4 is a reversing cam which is fitted onto the reversing bundle shaft 3 and rotates; (the bottom recess in the figure), a sixth retaining part (the recess adjacent to the fifth retaining part) consisting of four parts, and a lock collar 2.
It has a concave fourth retaining portion F on the circumference, which opposes the retaining portion E of.

Reference numeral 5 designates a lock lever, which is pivotally supported via a shaft 7 on a bearing 6 attached to the main body of a master controller (not shown), and is normally rotated clockwise around the shaft 7 by a spring 8. The roller 9 and the seventh
It has a retaining part G.

As shown in FIG. 2, the roller 9 is attached to a recessed portion of the lock lever 5 by a pin 10, slides on the circumference of the reversing cam 4, and then engages with one retaining portion of the reversing cam 4.

In this case, the lock lever 5 is moved against the roller 9 against the spring 8.
The reversing cam 4 is locked by causing the protruding retaining portion G provided at the tip thereof to engage with the concave engaging portions A-D of the lock collar 2.

Next, the operation of this device will be explained.

FIG. 1 is a plan view of the locking device when the main bundle is set in the emergency (locked) position and the reversing bundle is set in the forward position.

As shown in the figure, the engaging part G at the tip of the lock lever 5 is connected to the engaging part B which forms a recess together with the retaining part C of the lock collar 2.
, and prevents the lock collar 2 from rotating clockwise.

However, counterclockwise rotation of the main bundle is possible because there is a small gap between the retaining part A of the lock collar 2 and the engaging part G of the lock lever 5.

However, in the normal operation range in which the lock collar 2 is rotated counterclockwise from the emergency position shown in FIG. cannot move from the forward position to any other position.

In this way, during normal operation, the reversing bundle is locked against movement.

FIG. 3 is a plan view of the locking device when the reversing bundle is in the neutral (off) position (solid lines).

The lock collar 2 maintains the state shown in FIG.
Since the lock lever 5 has moved to the point where the engaging part G is opposed to the engaging part C, the reversing cam 4 moves from the engaging part in the forward position shown in FIG. 1 to the solid line in FIG. It was moved to the neutral (off) position shown in the holding part.

That is, the reversing cam 4 is moved forward (or backward) as shown in FIG.
When the roller 9 is rotated counterclockwise from the position shown in FIG. 3 to the neutral (off) position shown in FIG.
It crosses the peak of the reversing cam 4 at position 9C and finally returns to position 9B.

In parallel with this operation, the tip of the lock lever 5 moves to position GA.
It moves from to GB, further reaches position GC, operates in the opposite direction from position GC, and returns to position GB.

Position GB is a position where the engaging portion and G can engage with each other.

That is, it becomes possible to move the lock collar 2 clockwise, and it becomes possible to move the lock collar 2 to the extraction position shown in FIG. 4.

In other words, if the reversing bundle is held while being moved from the forward position to the cut position, that is, if the roller 9 is held at position 9B, the engaging portion G of the lock lever 5
Since the main bundle is in a position opposite to the engaging portion, the main bundle can be moved to the extraction position.

However, if you let go of the reversing bundle 4 at this position, the roller 9 will be returned to the position 9A again by the return force of the spring 8.
As a result, a problem occurs in which the main bundle is in the extraction position and the reverse bundle is in the forward (or backward) position, resulting in a so-called dead center.
Even if an upwardly protruding retaining portion E is provided and an attempt is made to move the lock collar 2 clockwise (removal) at position 9B, the lock collar 2 (the concave retaining portion F is at position FA) will not move. Rotation is prevented by the retaining portion E.

This prevents the main bundle from being moved to the extraction position.

In this way, dead points in bundle operation are eliminated.

Here, when the reversing cam 4 is rotated counterclockwise, the roller 9 crosses the retaining portion of the reversing cam 4 at the forward position and engages with the retaining portion corresponding to the neutral position of the reversing cam 4, The lock collar 2 stops at the position shown in FIG. 4, and moves to a position where the engaging part F can engage with the engaging part E, so the lock collar 2 is not prevented from rotating by the engaging part E and returns to the extraction position. Can be moved.

FIG. 4 is a plan view showing the state in which the lock collar 2 is further moved in the extraction direction in this manner, and the operation of the locking device is completed at this position.

In addition, in the state shown in Fig. 4, it is possible to return the main handle to the emergency position shown in Fig. 1, so in order to make this impossible, the reversing handle is usually fixed together with the lock collar 2 using a separately provided key. You may.

As described above, according to this invention, it is possible to reliably lock two shafts with a simple structure.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a two-shaft locking device according to an embodiment of this invention, Fig. 2 is a side plan view of a part of the lock lever in Fig. 1, and Figs. 3 and 4 are respectively FIG. 2 is a plan view for explaining the operation of the device shown in FIG. 1; Note that the same reference numerals in the figures indicate the same parts. In the figure, 1 is a main handle shaft, 2 is a lock collar, 3 is a reversing handle shaft, 4 is a reversing cam, 5 is a lock lever, 9 is a roller, and A-G are engaging parts.

Claims (1)

[Scope of utility model registration request] A main bundle shaft rotatably provided between a normal operation area for carrying out powering operations and braking operations of the electric vehicle, an emergency area for the final step of the above-mentioned brake operation, and an extraction position that allows extraction of the main bundle; A locking collar fixed to the main bundle shaft and having first, second and third retaining parts on its outer edge, rotatable between a forward position, a neutral position and a reverse position, and located at each position. a reversing bundle shaft that gives a forward command, a neutral command, and a reverse command to the electric vehicle; a reversing cam fixed to the reversing bundle shaft and having fourth, fifth, and sixth engaging parts on the outer edge; Fifth
and a seventh roller having a roller capable of engaging with the sixth retaining part and always urged in the direction of the reversing cam, and capable of engaging with the first or second engaging part of the lock collar. a lock lever having a locking portion, and when the main bundle shaft is in the normal range, the seventh locking portion of the lock lever engages with the first locking portion of the lock collar to cause the reverse rotation. The bundle shaft can be rotated between each position, and when the reversing bundle shaft is in the forward position, the lock lever is in a position where the roller engages with the fifth retaining portion of the reversing cam. 7th
When the retaining portion contacts the lock collar and prevents the main bundle shaft from rotating in the extraction direction, and the reversing bundle shaft is in the neutral position, the lock lever is moved so that the roller is in contact with the reversing cam. The seventh locking portion is in a position to engage the sixth locking portion, and the third locking portion of the lock collar is in a position to engage the reversing cam. A two-shaft opening/locking device, characterized in that the main bundle shaft is engaged with the fourth retaining portion of the main bundle shaft to enable the main bundle shaft to rotate to the extraction position.