JPH0368258B2 - - 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 route 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 operating 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. An emergency lever receiving member is provided on the end surface to lock the emergency lever, shift the operating shaft, maintain the separation state from the select shaft end surface, and release the lock when the emergency lever is rotated by a required angle. It is a projecting structure.

<Operation> When the automatic operation device for the shift and select shaft is normal, the present invention moves the operating shaft backward against the pressing force of the spring and locks the emergency lever in the emergency lever receiving member. It is separated from the shift and select shaft.

If the automatic operation device is malfunctioning, by operating the emergency lever from the driver's seat, the emergency lever will disengage from the emergency lever receiving member, the operating shaft will be pushed forward by the spring, and the shift will start. , is engaged and connected to the select shaft, and shifts when in neutral.
Shift by pushing the select shaft in the axial direction, select reverse or first speed with the select lever, and shift to reverse or first speed 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.

The shift/select shaft 3 and the coaxial operating shaft 14 are fitted into the housing 10 so as to be rotatable and movable in the axial direction, and their rear ends protrude outside from the end surface of the housing, and the protruding ends are 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, the emergency lever 12 is locked to the outer end surface of the housing 10, the operating shaft 14 is shifted, and kept separated from the select shaft end surface, and the lock is released when the emergency lever 12 is rotated by a required angle. An emergency lever receiving member 19 is provided in a protruding manner.

Since the present invention has the above-mentioned structure, when the automatic operation device of the shift and select shaft 3 is normal, the emergency lever 12 is activated as shown in FIGS. 1 and 2. Locked by the receiving member 19, the operating shaft 14 compresses the spring 15, moves backward, 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, the emergency lever 12 is disengaged from the emergency lever receiving member 19, and the operating shaft 14 moves forward due to the pressing force of the spring 15, and the shift and select shaft 3
comes into contact with. At this time, when the engaging portions 16 and 17 do not engage, the emergency lever 12 is rotated to a position where they engage. The operating shaft 14 shifts,
When it comes into contact with the select shaft 3, if it is in neutral, the select shaft 3 is shifted by the pressing force of the operating shaft 14, and the select shaft 3 is pushed to the end of shaft movement, and the shift provided on the select shaft 3 is shifted. , the select lever 2 (see FIG. 5) moves to the reverse or first speed 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

Further, 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, 11...Cylinder shaft, 12...Emergency lever, 14...Operating shaft, 15...Spring, 16, 17...Engaging portion, 19... Emergency lever receiving member.

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 surface of the housing, etc., and an emergency lever operated from the driver's seat is fixed to this projecting end, and the emergency lever is locked to the outer end surface of the housing, etc. A transmission emerger characterized by a protruding emergency lever receiving member that shifts the actuating shaft and maintains it apart from the end face of the select shaft and releases the lock when the emergency lever is rotated by a required angle. Engineering control device.