JPH0714263U - Transmission operating device - Google Patents

Abstract

(57) [Summary] [Structure] A first connecting member 16 in which a seat portion 18 of a ball joint is slidably installed is mounted on a shift operating rod 2 in a rotatable and axially restricted state. At the same time, the second connecting member 17 having the ball portion 19 of the ball joint at the tip thereof is fixed to the shift and select operation shaft 1, and the first portion is inserted through the fitting of the ball portion and the seat portion of the ball joint. The connecting member and the second connecting member are connected. [Effect] Since the first connecting member can freely rotate about the shift operation rod, an unreasonable force does not act on the sliding portion of the seat portion of the ball joint, and the followability to the select operation is improved. In addition, uneven wear of the sliding portion is further reduced. Further, since the shift operation rod is used as the support shaft, the support shaft for rotatably connecting the first and second connecting rods in the prior art can be omitted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a transmission operating device, and more particularly, to a transmission operating device that is installed between a shift and select operating shaft and a shift operating rod that are disposed orthogonally to each other and that transmits an operating force therebetween. Regarding the improvement of the connection mechanism.

[0002]

[Prior art]

 The operation force transmission mechanism between the shift and select operation shaft and the shift operation rod, which are arranged orthogonally to each other, of this kind are rotatably connected to each other through one supporting shaft. It is known that the operating force is transmitted using the first and second connecting rods (Actual Kaihei No. 4-126057). FIG. 5 is a schematic perspective view showing a main part of the conventional transmission operating device. In the figure, reference numeral 1 is a shift and select operating shaft, and 2 is a shift operating rod, which are arranged orthogonally to each other. The shift and select operation shaft 1 is configured to be moved in the axial direction A, that is, the select direction according to the operation of the change lever 3. A shift member 4 is fixed to the shift-and-select operation shaft 1, each has an engaging portion 5 that is selectively engaged with the shift member 4, and each shift corresponds to a gear of a predetermined speed. A plurality of shift rods 7 having forks 6 are arranged orthogonally to the shift rods 7. Further, the shift operating rod 2 is configured to be operated by a booster 8 for boosting force using compressed air according to the operation of the change lever 3. The booster 8 is attached to a casing wall of a transmission (not shown) with bolts, the shift operating rod 2 is arranged so as to be orthogonal to the shift and select operating shaft 1, and the shift and select operating shaft is provided. The end portion 2a of the shift operation rod 2 is arranged at a position directly below the end portion 1a of 1. The ends 1a and 2a are connected to each other so as to be rotatable about the support shaft 11 via the first and second connecting rods 9 and 10. The lower end of the second connecting rod 10 is connected to the shift operating rod 2 via a ball joint (not shown).

When the change lever 3 is operated, the shift and select operation shaft 1 moves in the axial direction A, that is, in the select direction in response to the operation in the select direction, and the shift member 4 is moved to a predetermined position. Engage with the joint 5. In this case, the relative displacement between the end 1a of the shift and select operation shaft 1 and the end 2a of the shift operation rod 2 due to the movement in the select direction is caused by the support shaft 11 and a ball joint (not shown). It is absorbed by the relative rotation of the first and second connecting rods 9, 10. Further, when the change lever 3 is operated in the shift direction, the booster 8 is actuated in accordance with the operation amount of the change lever 3 to move the shift rod 2 which is the output shaft thereof in the axial direction B to move the first lever. Also, the shift select operation shaft 1 is axially rotated in the shift direction C via the second connecting rods 9 and 10. As a result, the shift member 4 engaged with the selected engagement portion 5 is rotated to move the shift rod 7 in the axial direction D to engage the gear of a predetermined speed via the shift fork 6. become.

[0004]

[Problems to be solved by the device]

 The conventional transmission operating device as described above has a certain effect in that the load on the bearing portion of the shift operating rod that accompanies the transmission of the operating force can be reduced, but the shift and select operation is performed. Since the first and second connecting rods 9 and 10 connecting the end 1a of the shaft 1 and the end 2a of the shift operation rod 2 are rotatably connected to each other via the support shaft 11. However, there are the following problems. That is, since the connecting rods 9 and 10 are rotatably connected by the support shaft 11, it is necessary to process the support shaft 11 and the fitting hole of the support shaft 11 with high precision, and the shift operation rod. Not only is it difficult to form the vertical sliding through hole (see the above-mentioned publication) of the ball joint outer race (not shown) for No. 2, the outer joint for the ball joint, that is, the seat portion of the ball joint is vertically arranged. Since it is a structure that can slide only, it has poor followability to the displacement of the end 1a of the shift and select operation shaft 1 due to the operation in the select direction, and it also causes the sliding through hole to become worn out. was there. The present invention has been made in order to solve the above-mentioned problems of the prior art, and simplifies the configuration by utilizing the end portion of the shift operation rod itself as the support shaft of the coupling mechanism. It is an object of the present invention to provide a transmission operating device including a connecting mechanism having good followability to operation.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a transmission operating device that performs a shift operation by axial rotation while performing a shift operation by axial movement of a shift-and-select operation shaft. The seat is slidably installed in the first connecting member so that the first connecting member is rotatable and the movement in the axial direction is restricted, and the ball portion of the ball joint is attached to the tip of the shift and select operation shaft. The second connecting member provided is fixed, and the first connecting member and the second connecting member are connected through the fitting of the ball portion and the seat portion of the ball joint. To do.

[0006]

[Action]

 When a relative displacement occurs between the end of the shift and select operating shaft and the end of the shift operating rod by the operation in the select direction, the first connecting member causes the shift operating rod to move. At the same time as turning to the center, the seat part of the ball joint slides and absorbs the displacement. In this case, the first connecting member is guided by the ball portion provided at the tip of the second connecting member fixed to the end portion of the shift and select operation shaft to center the shift operating rod. Since it rotates extremely smoothly, no unreasonable force is applied to the sliding part, which improves followability to the select operation and reduces uneven wear of the sliding part. Further, since the shift operation rod is used as the support shaft, the support shaft 11 in the above-mentioned conventional art can be omitted, and the configuration can be simplified.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial vertical sectional view showing an embodiment of the present invention, and FIG. 2 is a YY sectional view thereof, each showing a neutral state. In the figure, reference numeral 1 is a shift and select operation shaft, and 2 is a shift operation rod, which are arranged orthogonally to each other. As shown in FIG. 5, the shift lever is operated in the select direction according to the operation in the select direction. A shift and fork 6 corresponding to a gear of a predetermined speed is provided by moving the to-and-select operation shaft 1 in the axial direction A, that is, the select direction to selectively engage the shift member 4 with the engaging portion 5. In addition to selecting the shift rod 7, the booster 8 is actuated in response to the operation in the shift direction by the change lever 3 to move the shift operating rod 2 which is the output shaft thereof in the axial direction B, and through the connecting member described later. By rotating the shift and select operation shaft 1 in the C direction to move the shift rod 7 in the axial direction D, a predetermined gear shift is performed. Is the same as that of the slave come art in that have been made. Further, the booster 8 is slidably fitted into the hollow portion of the shift operating rod 2 and connected to the change lever 3 when the shift lever 3 is operated in the shift direction, as in the prior art. By controlling the switching valve mechanism (not shown) through the movement of the sliding operation member 14 fixed to the operation member 12 in FIG. 1 by the bolt nut 13, the compressed air is supplied to one pressure chamber. As a result, the shift operating rod 2 is operated in the axial direction B following the operation of the change lever 3. In the figure, 15 is the compressed air supply port.

Next, a feature of the present invention is that the operating force of the shift operating rod 2 in the axial direction B is transmitted to the shift and select operating shaft 1 to be converted into an axial rotational force in the C direction. The connection mechanism will be described in detail. The connecting mechanism between the two shafts includes a first connecting member 16 mounted on the end portion 2a of the shift operating rod 2 in a state of being rotatable and restricted in axial movement, and the shift and select operating shaft 1. The second connecting member 17 is fixed to the end portion 1a of the. The first and second connecting members 16 and 17 are connected by a ball joint. A seat portion 18 constituting the ball joint is slidably provided inside the first connecting member 16 side. On the other hand, a ball portion 19 constituting the ball joint is provided at the tip end on the second connecting member 17 side. Through a ball joint formed by fitting the ball portion 19 and the seat portion 18, the operating force of the shift operating rod 2 in the axial direction B is transmitted to the shift and select operating shaft 1 so as to transmit in the C direction. It can be converted into the axial rotation force of.

FIG. 3 is a partially enlarged view showing a YY cross section in FIG. 1 when a select operation is performed, and both couplings when the shift and select operation shaft 1 is moved from the neutral state in one direction A1. The positional relationship between the members 16 and 17 is shown. As shown in the figure, when the shift-and-select operation shaft 1 is moved in the axial direction A1 from the neutral state by the select operation, the ball portion 19 and the seat portion are guided by the ball portion 19 forming the ball joint. The first connecting member 16 rotates in the E1 direction while causing relative sliding rotation with respect to 18. As a result, the displacement of the shift-and-select operation shaft 1 in the axial direction A is absorbed while maintaining the connection state between the first connecting member 16 and the second connecting member 17. In this case, since the first connecting member 16 is rotatably attached to the shift operating rod 2, the shift operating rod 2 does not rotate. Since the first connecting member 16 rotates about the shift operation rod 2, relative sliding occurs between the first connecting member 16 and the seat portion 18 to absorb the displacement. To do.

FIG. 4 is a partially enlarged view showing the positional relationship between the connecting members 16 and 17 when the shift operating rod 2 is shifted from the neutral state in the one direction B1. As shown in this figure, when the shift operation rod 2 moves in the axial direction B1 from the neutral state by the shift operation, relative sliding rotation is generated between the ball portion 19 and the seat portion 18 forming the ball joint. While inclining the second connecting member 17. As a result, the operating force of the shift operating rod 2 is converted into the axial rotational force of the shift and select operating shaft 1 in the C1 direction, which corresponds to a gear at a predetermined speed via the shift member 4 and the engaging portion 5. The shift rod 7 provided with the shift fork 6 will be shifted. In this case, since the second connecting member 17 rotates centering on the shift and select operation shaft 1, relative sliding also occurs between the first connecting member 16 and the seat portion 18. Then, the displacement is absorbed.

As described above, in the present invention, the displacement of the shift-and-select operation shaft 1 in the axial direction A during the selection operation is absorbed by the rotation of the first connecting member 16, and the shift operation is performed. The movement of the rod 2 in the axial direction B is converted into the axial rotational movement of the shift and select operation shaft 1 in the C direction through the rotation of the second connecting member 17, and the shift operation is performed. In this case, since the first connecting member 16 is rotatably attached to the shift operating rod 2, the displacement of the shift and select operating shaft 1 in the axial direction A is particularly accompanied by the former select operation. When the shift operation rod 2 is absorbed, the shift operation rod 2 is guided by the ball portion 19 provided at the tip of the second connecting member 17 fixed to the end portion 1a of the shift and select operation shaft 1. Since it pivots very smoothly around the center, no unreasonable force acts on the sliding portion of the first connecting member 16 and further on the shift operating rod 2. In the above embodiments, the case where the booster means is used to increase the force of the shift operation rod 2 has been described. However, in contrast to the manual shift operation rod 2 including a link mechanism that does not use the booster means. Is also applicable.

[0012]

[Effect of device]

 The present invention can obtain the following effects based on the above configuration. (1) Since the first connecting member can freely rotate about the shift operation rod, the seat forming the ball joint when absorbing the axial displacement of the shift and select operation shaft due to the selection operation. Since an unreasonable force does not act on the sliding part of the sliding part, the followability to the select operation is improved and uneven wear of the sliding part is further reduced, and at the same time, it acts on the shift operation rod itself. Since the force can be almost eliminated, the load on the bearing can be further reduced. (2) Since the shift operation rod is used as a support shaft, a support shaft for rotatably connecting the first and second connecting rods in the prior art can be omitted, which simplifies the configuration. Can be achieved.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line YY in FIG.

FIG. 3 is a partially enlarged view of a connecting member during a select operation.

FIG. 4 is a partial enlarged view of a connecting member during a shift operation.

FIG. 5 is a schematic perspective view showing a main part of a conventional transmission operating device.

[Explanation of symbols]

1 ... Shift and select operation shaft, 2 ... Shift operation rod, 3 ... Change lever, 6 ... Shift fork, 7 ... Shift rod, 8 ... Booster, 15 ... Compressed air supply port, 16 ... First connecting member, 17 ... Second connecting member, 18 ... Seat portion, 19 ... Ball portion

Claims (1)

[Scope of utility model registration request] 1. A transmission operating device for performing a select operation by axial movement of a shift and select operation shaft and at the same time performing a shift operation by axial rotation, wherein a seat portion of a ball joint is slidable on a shift operation rod. A second connecting member in which the first connecting member provided inside is mounted in a rotatable state and restricted in axial movement, and a ball portion of a ball joint is provided at the tip of the shift and select operation shaft. Is fixed, and the first connecting member and the second connecting member are connected through the fitting of the ball portion and the seat portion of the ball joint.