JPH0368259B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a transmission emergency control device for an automobile.

<Prior Art> Devices for automatically shifting and selecting transmissions in automobiles are known.
As shown in Figs. 4 and 5, the mechanism is as shown in Figs.
A shift cylinder 5 for operating the shift and select shaft 3, and a select cylinder 4 for performing a select operation are provided, and the shift cylinder 5 and the select cylinder 4 are provided with a command signal from a computer. It is automatically operated by controlling the valves provided in the fluid pressure piping path No. 4.

<Problems to be Solved by the Invention> In the transmission equipped with the above automatic operating device, for example, the fluid pressure piping system of the cylinder,
Alternatively, if a failure should occur in the control system, it would become inoperable, which would adversely affect following vehicles on the road, and there would be problems such as the inability to escape on a railroad crossing.

Although current technology does not allow such failures to occur, in the unlikely event that a failure occurs, safety must be ensured to deal with the failure.

In view of the above-mentioned problems, the present invention provides an emergency control device that is capable of self-propelled by manual operation in the event that the automatic operation device malfunctions.

<Means for Solving the Problems> The present invention provides a housing that encloses the tip of a shift and select shaft that is operated for shifting and selecting by an actuator, and that is rotatably operated on the same axis as the shift and select shaft. The shafts are fitted, and the operating shaft is constantly shifted by a spring, applying a pressing force toward the end of the select shaft, and the rotation direction is set between the end surface of the select shaft and one end surface of the operating shaft opposite to this end surface. The other end of the actuating shaft is made to protrude outside from the end surface of the housing, etc., and an emergency lever operated from the driver's seat is fixed to this protruding end. A flange is provided at one end,
A housing or the like is provided with an engaging pin that engages with the flange to shift the operating shaft and keep it separated from the end face of the select shaft. A recessed part is provided to release the engagement.

<Function> When the automatic operation device for the shift and select shaft is normal, the operating shaft is moved back against the pressing force of the spring, and the flange is locked to the engagement pin, so that the shift and select shaft can be operated. If the separated automatic operation device fails, the engagement is released by operating the emergency lever from the driver's seat when the recess provided in the flange matches the phase of the engagement pin. The operating shaft is pushed forward by a spring and is engaged and connected to the shift and select shafts, and when in neutral, the shift and select shafts are pushed in the axial direction to shift, and the select lever is selected to reverse or first gear. Shift to reverse or first gear by rotating the emergency lever. For example, if the shift/select lever is shifted to 4th gear, rotating the shift/select lever to return it to neutral will cause the shift/select shaft to shift as described above. It is pushed in the axial direction to correspond to reverse or first gear.

<Example> Examples of the present invention will be described below with reference to FIGS. 1 to 3. In FIG. 1, numeral 3 denotes a shift and select shaft, and numeral 10 denotes a housing that surrounds the tip of the shift and select shaft 3. As shown in FIG. Although not shown, the housing 10 is provided with a position detector such as a proximity switch, which electrically detects the position of the shift and select shaft 3.

An operating shaft 14 is fitted into the housing 10 so as to be rotatable and movable in the axial direction on the same axis as the shift/select shaft 3, and its rear end projects outward from the end face of the housing, and the projecting end is connected to the driver's cab. The emergency lever 12, which is rotated by the push-pull cable 13, is fixed.

The operating shaft 14 fitted in the housing 10 is constantly shifted by a spring 15 and a pressing force is applied toward the end of the select shaft 3. Also,
Engagement portions 16 and 17 are formed on the end surface of the shift/select shaft 3 and the end surface of the actuating shaft 14 opposing this end surface to engage and connect them in the rotational direction.

Furthermore, a flange 18 is provided at one end of the operating shaft 14, and the flange 18 engages within the housing 10 to shift the operating shaft 14 and shift the select shaft 3.
An engagement pin 20 is provided that maintains a spaced state from the end surface of the connector.

Further, an operating shaft 1 is provided on the outer periphery of the flange 18.
A recessed notch 19 is provided for releasing the engagement with the engagement pin 20 and allowing the actuating shaft 14 to move in the axial direction when the actuating shaft 14 is rotated at a predetermined angle.

Since the present invention has the above-described structure, when the automatic operation device of the shift and select shaft 3 is normal, the flange 18 is engaged with the engagement pin 20 as shown in FIGS. 1 and 2. and the operating shaft 14
moves backward by compressing the spring 15, and maintains a state separated from the end of the shift/select shaft 3.

In the unlikely event that the automatic operation device malfunctions, the emergency lever 12 is manually rotated from the driver's seat via the push-pull cable 13. As a result, the operating shaft 14 rotates, and when the recessed part 19 provided on the flange 18 matches the phase of the engagement pin 20, the engagement is released, and the operating shaft 14 moves forward under the pressing force of the spring 15. It comes into contact with the shift and select shaft 3. At this time, the engaging portion 1
When the levers 6 and 17 are not engaged, the emergency lever 12 is rotated to a position where they are engaged. When the operating shaft 14 comes into contact with the shift/select shaft 3, if it is in neutral, the shift/select shaft 3 is pushed to the end of shaft movement by the pressing force of the operating shaft 14, and the shift/select shaft 3 is shifted.
The shift/select lever 2 (see FIG. 5) provided in the gearbox moves to the reverse or first gear position. Therefore, by turning the emergency lever 12 forward or backward, the shift/select shaft 3 is rotated, and the shift/select lever 2 is shifted to reverse or first gear.

Further, when the operating shaft 14 comes into contact with the shift/select shaft 3 and is engaged and connected, when the shift/select lever 2 is shifted to, for example, fourth gear, the emergency lever 12
When the gear is turned to neutral, the shift/select shaft 3 is immediately pushed to the end of shaft movement as described above, and the gear is shifted to reverse or first gear.

<Effects of the Invention> As described above, according to the device of the present invention, shifting,
Even if a failure occurs in the automatic operation device of the select shaft, it is possible to shift to reverse or 1st gear by manual operation, and the vehicle can be moved to a safe location by driving on its own, increasing safety. It has the advantage of ensuring

Furthermore, since the operating shaft, spring, etc. of this manual operating mechanism are provided within the housing, there is an effect that this is very advantageous in terms of space.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the device of the present invention, Fig. 2 is a perspective view with the emergency not activated, Fig. 3 is a perspective view with the emergency activated, and Fig. 4 is a perspective view showing the transmission automatic operating device. , FIG. 5 is an enlarged sectional view taken along the line V-V in FIG. 4. 3...Shift/select shaft, 10...Housing, 12...Emergency lever, 1
4... Operating shaft, 15... Spring, 16, 17
... Engaging portion, 18... Flange, 19... Recessed portion, 20... Engaging pin.

Claims (1)

[Claims] 1. An operating shaft is rotatably fitted on the same axis as the shift and select shaft into a housing, etc. that surrounds the tip of the shift and select shaft that is operated by an actuator, and this operating shaft is connected by a spring. an engaging portion that constantly applies a pressing force in the direction of the end of the shift/select shaft and engages and connects the end face of the shift/select shaft and one end face of the actuating shaft opposite to this end face in the rotational direction; The other end of the shaft projects outward from the end face of the housing, etc., and an emergency lever operated from the driver's seat is fixed to this projecting end, and a flange is provided at one end of the operating shaft, and this flange is engaged. A housing or the like is provided with an engaging pin that shifts the operating shaft and maintains it separated from the end face of the select shaft, and the flange is provided with an engaging pin that disengages from the engaging pin when the operating shaft rotates at a required angle. A transmission emergency control device characterized by having a concave cutout.