JPH04145264A - Transmission control - Google Patents

Abstract

PURPOSE:To improve the transmission efficiency of control force as well as to miniaturize a transmission control by rotating a turning arm with a pressure fluid, and operating an output transmission shaft, while positioning the output transmission shaft with a pair of operating rods and the pressure fluid. CONSTITUTION:A turning arm 68 and an output transmission shaft 69 both are set up in a storage chamber 66 of a select operating actuator 65a. With this output transmission shaft 69 rotated, a turning lever 69a is rotated and a shift-and-select 62 is slidden in the select direction (arrows A, A' directions) along a spline 61a of an operating rod 61. The storage chamber 66 is halved by the turning arm 68 and two pressure chambers 70, 71 are formed at both sides, and two actuators A1, A2 are installed in a housing 67. When compressed air is fed to pressure chambers 80, 81, two operating rods 74, 75 reciprocate against energizing force of compression coil springs 76, 77 and, after the turning arm 68 is positioned selectively to one of the select positions, this arm 68 is selectively positioned to one of the shift positions, thus specified shift operation is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a transmission operating device equipped with a rotary type fluid actuator as a driving means.

b. Prior art Conventional piston type transmission operating device (for example,
128207) has a large size when mounted on a transmission, which makes it difficult to mount it and also increases the cost. Furthermore, this type of device has the disadvantage that the transmission loss of operating force is large.

In order to solve this problem, a transmission operating device has been proposed in which a rotary fluid actuator is used as a driving means for operating the transmission (for example, see Japanese Patent Laid-Open No. 5,544,9452).

In this type of device, compressed air is supplied to the pressure chamber of the actuator by operating the shift operation lever,
The rotational force of the rotary piston rotated thereby is directly transmitted to the shift iron to perform a shift operation.

C1 Problems to be Solved by the Invention Transmission operating devices using rotary fluid actuators have the advantages of good transmission of operating force, simple structure, and small size. The reality is that no effective measures have been taken regarding the positioning mechanism necessary for operation, for example, the positioning mechanism for the rotational position of the shift rod.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a device with good operating force transmission efficiency, miniaturization, and accurate positioning of the shift position or select position. The object of the present invention is to provide a transmission operating device that can be used to operate a transmission.

d. Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a transmission operating device equipped with a rotary fluid actuator as a drive means: (A) integrated with a rotatable output transmission shaft; (B) a pair of pressure chambers provided on both sides of the rotation arm; (C) a pressure fluid supply for selectively supplying and discharging pressure fluid to the pair of pressure chambers; (D) a pair of actuation rods disposed on opposite sides of the rotary arm and moved to at least two positions to function as a stop for the rotary arm; I am trying to configure it.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 shows a transmission operating device 60 to which the present invention is applied, in which 61 is an operating rod having a spline 61a, and 62 is slidably fitted to the spline 61a of the operating rod 61. 63a, 63b, 63c, 63d are shift jitters, 64a, 64b, 64c, 64d are shift shafts, 65a is a shift and select lever 62
a select operation actuator (roquery type fluid actuator) 65 that moves in the axial direction (select direction) of the operating rod 61 and positions it at a predetermined select position;
b is a shift operation actuator (rotary type fluid actuator) that rotates the operation rod 61 around its axis.

The above-mentioned select operation actuator 65a is the fourth
As shown in the figure, a housing 67 having a storage chamber 66 is provided, and a rotation arm 68 and an output transmission shaft 69 are disposed within this storage chamber 66. The output transmission shaft 69 is rotatably supported around its axis.
is rotated, the rotary lever 69a (see FIG. 1) is rotated, and the shift and select 62 is moved along the spline 61a of the operating rod 61 in the select direction.
It is configured to be slid in the direction of arrows A and A' in the figure.

Further, the rotating arm 68 is integrally attached to the output transmission shaft 69 and is arranged to be rotatable within the storage chamber 66. This rotation arm 68 allows the storage chamber 66 to
is divided into two, and pressure chambers 70.7 are formed on both sides of the rotating arm 68.
] is formed. Furthermore, ports 72.73 communicating with the pressure chambers 70.71 are formed in the housing 67, and compressed air is supplied from a compressed air supply source (not shown) through these ports 72.73, or the pressure chambers 70.71 are connected to the pressure chambers 70.71. 7
It is configured so that the compressed air inside 1 is discharged to the outside.

Further, the above-mentioned housing 67 includes a pair of actuators ^3. which are provided with actuation doors 4.75 at symmetrical positions on both sides of the rotation arm 68. A is installed.

These operating doors 4.75 are supported movably along their axes, and are normally supported by compression coil springs 76.
, 77 are pressed into engagement with the closing plates 78 and 79, respectively. Under such conditions, the hemispherical tip surface 74a of the actuation door 4.75.

75a is arranged in a position slightly protruding into the pressure chamber 70.71 of the housing 67 (first position), and the pressure chamber 80 provided on the back side of the operating door 4.75 When compressed air is supplied to .81 from a compressed air supply source (not shown), the actuation doors 4, 75 are moved forward against the urging force of the compression coil springs 76, 77, and the hemispherical tip surfaces 74a, 75a are moved forward. The pivot arm 68 is configured to protrude at a predetermined position within the pressure chamber 70.71 of the housing 67 (second position).
The hemispherical tip surface 74 of the above-mentioned actuating rod 74,75 is shown in FIG.
a, hemispherical recess 82.8 at the location corresponding to 75a
3 is formed.

On the other hand, the shift operation actuator 65b is a rotary type fluid actuator like the selection operation actuator 65a described above, and as shown in FIG. 2, the operation rod 61 serves as an output transmission shaft. That is, a rotating arm 68 is integrally fixed to the operating rod 61, and the operating rod 61 is rotated about its axis by the actuator 65b, thereby performing a predetermined shift operation. . In FIG. 2, members having the same functions as those of the select operation actuator 65a shown in FIG. 4 are denoted by the same reference numerals, and their explanations will be omitted.

Next, the operation of the transmission operating device 60 having such a configuration will be explained.

First, a case will be described in which the shift and select lever 62 is in the neutral position shown in FIG. 1 (corresponding to the select position N shown in FIG. 4).

In this case, compressed air is supplied into the pressure chamber 80 on the back side of the actuating rod 74 of the select operation actuator 65a, and the actuating door 4 is moved to the protruding device (forward position) shown by the - dotted chain line in FIG. Compressed air is supplied into the pressure chamber 71 through the port 73 of the housing 67 . Note that at this time, the other port 72 is opened to the atmosphere, so the pressure chamber 70 is at atmospheric pressure. As a result, the recess 82 of the pivot arm 68
4 and select position Nb (
(see Figure 4).

Then, in response to the output transmission shaft 69 being placed at the select position Nb shown in FIG. 4 (however, the select position KNc shown in FIG. 4) in conjunction with the rotating arm 68, the shift The AND select lever 62 is aligned with the shift jaw 63b.

On the other hand, in the shift operation actuator 65b,
As shown in FIG. 2, compressed air is supplied into the pressure chamber 80.81 on the rear side of the operating door 4.75, and this causes the pair of operating door 4.75 to move to the protruding position (outward position) as shown in FIG. movement position) and the operating door 4
．． The tip surfaces 74a and 75a of the actuating rods 75 are respectively engaged with the recesses 82.83 of the rotating arm 68, so that the rotating arm 68 is held between these operating rods 74,75.

As a result, the rotating arm 68 is held in the neutral position NE) at approximately the center of the storage chamber 66 of the housing 67. Note that at this time, the pressure chamber 70 of the housing 67.
Compressed air is not supplied into the interior of the chamber 71, and the inside thereof is at atmospheric pressure.

When the shift lever is shifted to, for example, second speed under such a state, the shift operation actuator 65b is driven based on the information signal. That is, in this case, the compressed air in the pressure chamber 80.81 of the shift operation actuator 65b is discharged, and the compressed air is supplied into the pressure chamber 71 through the port 73. Note that at this time, the other pressure chamber 70 is opened to the atmosphere. Thus, the pair of actuating rods 74 and 75 are placed in the reciprocating position as shown in FIG. It is rotated together with the shaft 69 in the direction of arrow B in FIG. As a result, the recess 82 of the rotating arm 68 engages with the distal end surface 74a of the actuating rod 74, and the position SHA (third
(see figure), the rotating arm 68 is held. When the operating rod 61 is rotated as the rotating arm 68 of the shift operation actuator 65b is rotated in the direction of arrow B, the shift lever w-63b and the shift shaft 64b are rotated.
is activated, the synchronizer ring and synchronizer cone of a constant-mesh synchronization mechanism (not shown) come into contact with each other, starting a synchronization operation, and performing a predetermined shift operation to second speed.

Further, when the shift lever is shifted to, for example, 3rd gear while the shift and select lever 762 is aligned with the shift jaw, the actuating rod 74,75 of the shift operation actuator 65b is maintained at the return position. Under the condition
Compressed air in the pressure chamber 71 is discharged to the outside through a port 73, and compressed air is supplied into the pressure chamber 70 through a port 72. Therefore, the recess 8 of the rotating arm 68
3 is engaged with the distal end surface 75a of the actuating rod 75 and held at the position 5BB shown by the dashed line in FIG.
c is operated in the opposite direction to the case described above, and a shift operation to third speed is performed.

In this way, by controlling the operation of the actuators A I, A t and controlling the supply and discharge of pressure fluid to the pressure chamber 70.71 via the ports 72.73, the rotation arm 68 of the select operation actuator 65a is moved to the fourth position. One of the four select positions N −, N h, N −, Na shown in the figure
After selectively positioning the rotary arm 68 of the shift operation actuator 65b at one of the shift positions SHA, NE, and 5IIB shown in FIG. 2, a predetermined shift operation is performed. be able to.

According to the transmission operating device 60 of this example, the rotary type select and shift operation actuator 65a.

65b, it is possible to accurately determine the up, select, and shift positions where the operating force can be efficiently and directly transmitted to the shift and select lever 62 and the operating rod 61.

In addition, although the shift operation force generally requires a larger force than the selection operation force, if the rotary type fluid actuator 65b as described above is used for the shift operation as in this example, the shift position can be determined reliably. Therefore, there is no risk of problems caused by shifts in shift positions, etc.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above, and various modifications and changes can be made based on the technical idea of the present invention.

For example, in the embodiment described above, the operating door 4.75 is configured to be operated by compressed air, but a plunger solenoid or the like may be used instead.

e. Effects of the Invention As described above, the present invention provides a pressure fluid (e.g. compressed air)
The output transmission shaft (
For example, the output transmission shaft 69 and the operating rod 6 shown in the embodiment
1), and the output transmission shaft is positioned by a pair of actuating rods that function as stoppers and pressurized fluid, so the rotary type fluid actuator has the following advantages: The present invention has the advantage that it has good transmission efficiency of operating force, is compact and can be installed without taking up a large space, and can also accurately and reliably position the shift position or select position with a simple configuration.

[Brief explanation of drawings]

1 to 4 show an embodiment of the present invention, in which FIG. 1 is a schematic front view of a transmission operating device, FIG. 2 is a sectional view of a shift operation actuator, and FIG. 3 is a schematic front view of a transmission operating device. FIG. 4 is a sectional view showing the operation of the shift operation actuator, and FIG. 4 is a sectional view of the select operation actuator. 60... Transmission operating device, 61... Shift operating force, 65a... Actuator for select operation (rotary type fluid actuator), 65b... Actuator for shift operation (rotary type fluid actuator), 68...・Rotating arm, 69... Output transmission, 7
0, 71... Pressure chamber, 72.73... Port, 74, 75... Operating rod, A+, At... Actuator, SHA, NE, 5IIB... Shift position, N...
N,, Nc, N, --- Select position. Patent Applicant Automotive Equipment Co., Ltd. (2 others)

Claims (1)

[Scope of Claims] A transmission operating device including a rotary fluid actuator as a drive means, comprising: (A) a rotating arm integrally fixed to a rotatable output transmission shaft; (B) the rotating arm; (C) a pressure fluid supply port for selectively supplying and discharging pressure fluid to and from the pair of pressure chambers; (D) located on both sides of the rotating arm; and a pair of actuating rods that function as stoppers for the rotating arm by being moved to at least two positions.