JPS61105338A - Emergency control device of transmission gear - Google Patents

Abstract

PURPOSE:To improve safety by selecting any range of a shift select lever by manual operation to continue running when an automatic operation device for a shift select shaft gets out of order. CONSTITUTION:When an automatic operation device gets out of order an emergency lever 12 is manually turned through a push-pull cable 13 from a driver's seat. Thus, a shift select shaft 3 is rotated, so that a shift select lever is reversed or shifted to the first speed. In such a condition, a push-pull cable 223 is operated, whereby a ring 22 forces a shift select shaft 14 to axially move against the pressing force of a spring 15. Accordingly, the shift select lever can be shifted to any position among the second to fifth speed, so that running is continued to ensure safety.

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 the transmission of an automobile are known.

As shown in FIGS. 4 and 5, the mechanism includes a shift and select shaft 3 equipped with a shift and select lever 2 on a transmission 1, and a shift cylinder 5 that operates the shift and select shaft 3. The shift cylinder 5 is automatically operated by controlling the valves provided in the fluid pressure piping path of the shift cylinder 5 and the select cylinder 4 using command signals from a computer.

<Problems to be Solved by the Invention> In the transmission equipped with the above-mentioned automatic operating device, for example, if a failure occurs in the hydraulic piping system of the cylinder or its control system, the operation becomes inoperable and This may cause problems such as having a negative impact on the cars following, and making it impossible to escape on a railway 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 shift that operates to shift and select by an actuator, a housing that surrounds the tip of the select shaft, etc. The shafts are fitted together, the operating shaft is constantly shifted by a spring, a pressing force is applied toward the end of the select shaft, and the shift and the end face of the select shaft are
This end face and one end face of the operating shaft facing each other are formed with an engaging part that engages and connects the rotational direction, and the other end of the operating shaft is made to protrude outside from the end face of the housing, etc., and is operated from the driver's seat at this protruding end. A flange is provided at one end of the operating shaft, and an engaging pin is inserted into the housing, etc. to engage the flange to shift the operating shaft and keep it separated from the end surface of the select shaft. In preparation for this, the flange is provided with a recessed part that releases the engagement with the engagement pin when the operating shaft rotates at a required angle, and the shift
A collar is formed on the select shaft, and a select ring that comes into contact with the collar is inserted, and the ring is connected to a push-pull cable that is operated from the driver's seat by shifting this ring and moving it in the axial direction of the select shaft. It's huge.

Function> The present invention, when the automatic operation device of the shift and select shaft is normal, moves the operating shaft backward against the pressing force of the spring, locks the flange to the engagement pin, and operates the shift and select shaft. are separated from each other.

If the automatic operation device fails, by operating the emergency lever from the driver's seat, the engagement will be released when the recess provided in the 7-lunge matches the engagement pin, and the operating shaft will be released. is pushed forward by a spring,
It is engaged and connected to the shift and select shaft, and when it is in neutral, it shifts, the select shaft is pushed in the axial direction to shift, the select lever is selected to reverse or 1st gear, and the rotation of the emergency lever selects reverse or first gear. Shift to 1st gear. Also, for example, shift,
When the select lever is shifted to 4th gear, the shift occurs, and when the select lever is rotated and returned to neutral, the select shaft is pushed in the axial direction by the pressing force of the spring, and reverse gear is activated. or the first
This means that they can respond quickly.

Furthermore, in the above state, by moving the ring in the direction in which it comes into contact with the collar, the shift and select shafts are moved in the axial direction, and the shift and select shafts are moved in the axial direction, and
Select any speed.

Embodiments Examples of the present invention will be described below with reference to FIGS. 1 to 3. In Figure 1, 3 is a shift, select shaft,
A housing 10 surrounds the tip of the shift/select shaft 3.

Although not shown, the housing IO 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 surface of the housing, and the projecting end is connected to the driver's cab. The emergency lever 12, which is pivoted by the push-pull cable 13, is fixed.

The actuating shaft 14 fitted in the housing 10 is constantly pressed against the end of the shift select shaft 3 by a spring 15. Furthermore, 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 that faces this end surface for engaging and connecting them in the rotational direction.

Further, a flange 18 is provided at one end of the actuating shaft 14, and the flange 18 is engaged within the housing 10, so that the actuating shaft 1
4 is shifted, and an engagement pin 20 is provided for maintaining the end face of the select shaft 3 and a spaced state.

Further, on the outer periphery of the flange 18, there is a recessed notch for disengaging the engagement with the engagement pin 20 and allowing the operating shaft 14 to move in the axial direction when the operating shaft 14 rotates at a required angle. 19 are provided.

Further, a collar 21 is formed on the shift and select shaft 3, and a ring 22 that contacts the collar 21 is fitted onto the shift and select shaft 3 so as to be relatively movable. Then, the push-pull cable 2 is operated by shifting this ring 22 from the driver's seat and moving it in the axial direction of the select shaft 3.
3 is connected to the ring 22.

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 connected to the engagement pin 20 as shown in FIGS. 1 and 2.
The actuating shaft 14 compresses the spring 15 and moves backward, maintaining a distance from the ends of the shift and select shafts 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 actuating shaft 14 rotates, and when the concave notch 19 provided on the flange 18 matches the engagement pin 20 in phase, the engagement is released, and the pressing force of the spring 15 causes the actuating shaft 14 to rotate.
moves forward and comes into contact with the shift/select shaft 3. At this time, when the engaging portions 16 and 17 do not engage, the emergency lever 12 is rotated to the engaging position. When the operating shaft 14 comes into contact with the shift/select shaft 3, if the shift/select shaft 3 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. The selected shift lever 2 (see FIG. 5) moves to the reverse or first gear position. Therefore, by rotating the emergency lever 12 forward or backward, the shift
The select shaft 3 rotates, and the shift select lever 2 shifts to reverse or first gear.

Further, when the operating shaft 14 contacts 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 is rotated. When the gear is set 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.

Furthermore, in the above state, by operating the push-pull cable 23 connected to the ring 22,
The ring 22 allows the shift and select shaft 14 to be axially moved against the pressing force of the spring 15 to select any position from 2nd to 5th gear, and to shift by operating the emergency lever 12. be.

<Effects of the Invention> As described above, according to the device of the present invention, even if a failure occurs in the automatic operating device of the shift and select shaft, it is possible to shift and select any range by manual operation.
You can continue driving.

Further, since the main components of this manual operation mechanism are provided within the housing, this has the effect of being 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 shows the automatic operation device for the transmission. The perspective view and FIG. 5 are an enlarged sectional view taken along the line V-V in FIG. 4. 3...Shift, select shaft, 10...Housing, 12...Emergency lever, 14...
Operating shaft, 15... Spring, 16.17... Engaging portion, 18.'... Flange, 19... Concave notch, 20.
...Engagement pin, 21...Brim, 22...Ring, 23
...Push-pull cable. Patent Applicant Hino Motors Co., Ltd. Agent Hirai Oil Cylinder Figure 1 Figure 3

Claims (1)

[Claims] An operating shaft is rotatably fitted on the same axis as the shift and select shaft into a housing surrounding the tip of the shift and select shaft that is operated by an actuator, and this operating shaft is constantly shifted and selected by a spring. Applying pressure toward the shaft end,
forming an engaging portion that engages and connects the shift and select shaft end face and one end face of the actuating shaft opposite to this end face in the rotational direction, the other end of the actuating shaft protruding outside from the end face of the housing, etc.; An emergency lever operated from the driver's seat is fixed to this protruding end, a flange is provided at one end of the operating shaft, and the flange engages to shift the operating shaft;
An engagement pin that maintains a separation state from the end face of the select shaft is provided in a housing or the like, and the flange is provided with a recessed part that releases the engagement with the engagement pin when the operating shaft rotates at a predetermined angle, Further, a flange is formed on the shift and select shaft, and a select ring that comes into contact with the flange is fitted into the push-pull cable for shifting and operating the ring from the driver's seat in the axial direction of the select shaft. A transmission emergency control device characterized by connecting a ring.