JPS6238413Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a transmission actuating device for manually controlling the transmission of an automobile, etc., in particular, a tower is fixed to a base fixed to the vehicle body, and the tower is arranged in the longitudinal direction of the vehicle. A carrier is rotatably supported via a first shaft, and a gear shift lever is supported on the carrier via a second shaft disposed in the left-right direction of the vehicle;
A conversion mechanism is connected to the carrier for operating a selection wire by rotation of the carrier around a first axis together with the gear shift lever, and a conversion mechanism is connected to the gear shift lever to operate a selection wire by rotation of the carrier around a first axis together with the gear shift lever. This relates to a gear shift actuating device that is provided with an actuating arm for actuating a shift wire by rotation, and its purpose is to minimize manufacturing errors in the conversion mechanism and to accurately actuate the select wire. The purpose of the present invention is to provide a simple and effective speed change actuating device, which is characterized in that the converting mechanism is provided with an actuating arm protruding from the carrier and extending in the axial direction of the second shaft, and an actuating arm provided on the tower. Second
The third shaft extends in the axial direction of the shaft, and a bell crank lever is rotatably supported by the third shaft and connects the operating arm of the carrier and the selection wire.

Hereinafter, one embodiment of the present invention applied to a transmission of an automobile with five forward speeds and one reverse speed will be explained with reference to the drawings. Thus, the base plate is removably fixed, and the tower 3 is fixed to the upper surface of the base plate by welding or the like. The tower 3 is composed of a front wall plate 3f and a rear wall plate 3r that face each other at intervals in the longitudinal direction of the vehicle, and a side wall plate 3s that connects these. Both ends of the first shaft ₄₁ extending in the front-rear direction are supported. The first axis 4 ₁ between the front and rear wall plates 3f and 3r
A distance collar 5 is fitted into the collar 5, and a carrier 6 is rotatably supported by the collar 5 via a bush 7. A second shaft ₄₂ extending in the left-right direction of the vehicle is fixed to the carrier 6.
A speed change lever 8 is rotatably supported at ₂ via a bush 9.

The shift lever 8 is integrally formed with an operating arm 10 that extends downward from the second shaft ₄₂ , and a shield-type shift lever that extends in the axial direction of the first shaft ₄₁ is attached to the tip of the operating arm 10. The starting end of wire 11i is connected.

The carrier 6 also includes an actuating arm 12 that extends in the axial direction of the second shaft ₄₂ and projects outside the side wall plate 3s.
are integrally formed. The tip of this operating arm 12 is a spherical end 12a, and is a horizontal arm of a bell crank lever 13 that is rotatably supported on the side wall plate _3s via a third shaft ₄₃ parallel to the second shaft 42. 1
The spherical end 12a is slidably fitted into the connecting groove 14 provided in the connecting groove 3a via the bush 15. The connecting groove 14 extends in the horizontal direction similarly to the horizontal arm 13a. On the other hand, the starting end of a shielded selection wire 11e extending in the axial direction of the first shaft ₄₁ is connected to the tip of the vertical arm 13b of the bell crank lever 13. The third shaft 4 ₃ , the operating arm 12 and the bell crank lever 13 are connected to the first shaft 4 of the carrier 6.
A conversion mechanism C is configured that converts rotation around ₁ into a selection operation of the selection wire 11e.

Figure 2A shows the shift pattern of the shift lever 8, where N is the neutral position, is the 1st gear position, is the 2nd gear position, is the 3rd gear position, is the 4th gear position, is the 5th gear position, and R is the reverse position. be.

When the shift lever 8 is displaced on the line of the neutral position N, a so-called select operation is performed, the shift lever 8 rotates together with the carrier 6 around the first shaft ₄₁ , and any position from the neutral position N is rotated. gear position,
...or when a so-called shift operation is performed to shift the shift lever 8 to R, the shift lever 8 rotates around the second shaft ₄₂ . In order to define the selection limit of the shift lever 8 toward the - position side, the front wall plate 3f and the carrier 6 are provided with a fixed stopper 16 and a movable stopper 17, respectively, which can come into contact with each other.

The first shaft ₄₁ is composed of a bolt, and an inward flange 1 of a spring receiver 19 surrounding the nut 18 is connected between the nut 18 screwed onto the tip of the first shaft 41 and the rear wall plate 3r.
9a is clamped. The spring receiver 19 is a coil portion 20a of a first holding spring 20 made of a torsion coil spring.
The fixed end 20b of this spring supports the rear wall plate 3r.
The free end 20c is locked to a locking pawl 21 connected to the carrier 6, and the free end 20c is locked to a protrusion 22 formed on the carrier 6.
is pressed toward the direction of the shift lever 8 from the - position to the -R position.

In FIGS. 4 to 6, a plurality of bosses 25, 2 protruding from the inner wall of the mission case M are shown.
A speed change shaft 28 is supported by 6 and 27 so as to be slidable and rotatable. A control arm 29 is attached to the upper end of this transmission shaft 28.
is fixed by a bolt 30, and a first engagement groove 31 extending parallel to the axis of the transmission shaft 28 is provided at the tip of the control arm 29, and a first engagement groove 31 extending parallel to the axis of the transmission shaft 28 is provided at the base of the control arm 29.
A second engagement groove 32 is provided that extends perpendicularly to the axis.

A spherical end 35a of an inner shift lever 35, which is rotatably supported by the mission case M via a first rotation shaft 33, is slidably engaged in the first engagement groove 31, and The engagement groove 32 has a pin-shaped end 36a of an inner select lever 36 rotatably supported by the mission case M via the second rotation shaft 34.
are slidably engaged. On the outside of the mission case M, the first rotation shaft 33 and the second rotation shaft 3
An outer shift lever 37 and an outer select lever 38 are respectively fixed to the lever 3.
The terminal ends of the shift wire 11i and the selection wire 11e are connected to 7 and 38, respectively.

A spring receiver 39 is slidably fitted to the lower end of the speed change shaft 28, and a second holding spring 40 is compressed between the spring receiver 39 and the transmission case M.
This spring 40 is connected to the boss 27 adjacent to the spring receiver 39.
The transmission shaft 28 is pressed upward against the elastic force of the first holding spring 20 until it comes into contact with the lower surface of the first holding spring 20.

A drive shift arm 41 is fixed to the shift shaft 28 between the bosses 26 and 27 with a bolt 42, and an interlock plate 43 having a U-shaped cross section and arranged to sandwich the shift arm 41 is attached to the shift shaft 28. It is mounted so that it can rotate freely. This interlock plate 43 is provided with an engagement groove 44 extending parallel to the axis of the transmission shaft 28, and an interlock bolt 45 fixed to the transmission case M is inserted into this groove 44.
are slidably engaged. Thereby, the interlock plate 43 can move together with the drive shift arm 41 in the axial direction of the speed change shaft 28, but cannot rotate around the speed change shaft 28. This interlock plate 43 includes a pair of regulating claws 46, 46' facing each other with the distal end of the drive shift arm 41 interposed therebetween. Engagement grooves 48 at the tips of the second and third driven shift arms 47 ₁ , 47 ₂ , 47 _3
1 , 48 ₂ , and 48 ₃ , respectively. First, second and third driven shift arms 47 ₁ , 47 ₂ ,
47 ₃ are first, second and third shift shafts 49 ₁ , 49 arranged in parallel inside the mission case M.
₂ and 49 ₃ , respectively. This first shift shaft 49 ₁ establishes a gear train for 1st and 2nd speeds by sliding in one direction and the other direction, and the second shift shaft 49 ₂ establishes a gear train for 3rd and 4th speeds by sliding in a similar manner. A gear train is established, and the third shift shaft ₄₉₃ is shifted to 5 by similar sliding motion.
This establishes a gear train for speed and reverse.

A groove 50 extending in the longitudinal direction is formed on one side of the transmission shaft 28, and a steel ball 53 held in the support hole 51 of the transmission case M and urged in the projecting direction by a spring 52 is inserted into the groove 50. is engaged.
The bottom of the groove 50 has the same depth at a portion a corresponding to the section where the drive shift arm 41 moves between the first and second driven shift arms 47 ₁ and 47 ₂ . The groove bottom is inclined so as to become gradually shallower toward the groove end at a portion b corresponding to a section of movement between the second driven shift arm _47-2 and the third driven shift arm _47-3 . Therefore, the drive shift arm 41
When the shift shaft 28 is slid so that the drive shift arm 41 is moved between the first and second driven shift arms 47 ₁ and 47 ₂ , the sliding resistance by the steel balls 53 is controlled to be constant, and the drive shift arm 41 is moved between the first and second driven shift arms 47 1 , 47 2 . When the shift shaft 28 is slid from the engagement position with the driven shift arm 47 ₂ toward the engagement position with the third driven shift arm 47 ₃ , the sliding resistance due to the steel balls 53 increases. be done.

Next, to explain the operation of this embodiment, when the gear shift lever 8 is placed at the neutral position N, normally,
The second holding spring 40 in the transmission case M presses the spring receiver 39 against the lower surface of the boss 27, and supports the lower end of the transmission shaft 28 by the spring receiver 39. In this state, FIG. As shown in FIG. 2, the driving shift arm 41 engages with the second driven shift arm ₄₇₂ , and the regulating claws 46, 46' of the interlock plate 43 engage with the first and third driven shift arms ₄₇₁ , _473, respectively. These movements are restrained. On the other hand, the first holding spring 20 connected to the carrier 6 is connected to the first shaft 4 ₁
A rotational force is applied to the carrier 6 in the counterclockwise direction as shown in FIG.
3 acts as a tensile force on the select wire 11e, and furthermore, the outer and inner select levers 3
8 and 36 to the transmission shaft 28 as a downward pressing force as shown in FIGS.
It is set to be weaker than the set load of the holding spring 40, and does not push down the spring receiver 39 that is in contact with the boss 27. In this way, the selection system from the carrier 6 to the transmission shaft 28 is held between the first and second holding springs 20, 40, and the transmission lever 8 is held at the -select position shown in FIG. 2A.

Therefore, if the shift lever 8 is now shifted to the third speed position, the shift lever 8 will rotate counterclockwise around the second shaft ₄₂ in FIG. A pressing force is applied, whereby the outer and inner shift levers 37, 35 are rotated clockwise in FIG. A third gear train is established by shifting in one direction the second driven shift arm ₄₇₂ with which 41 is engaged. Furthermore, it is clear that if the shift lever 8 is shifted to the 4th speed position, the movement of the shift system from the shift lever 8 to the second driven shift arm ₄₇₂ will be opposite to the above, and a 4th gear train will be established. Probably.

Next, in order to establish the first or second gear train, first move the gear shift lever 8 to the neutral position N.
Displace (select) to the position side. Then, the gear shift lever 8 rotates together with the carrier 6 around the first shaft ₄₁ against the torsional force of the first holding spring 20, and this rotational force is applied to the operating arm 10, the bell crank lever 13,
It is transmitted to the speed change shaft 28 via the selection wire 11e and the outer and inner select levers 38, 36, and moves it upward as shown in FIGS. ₁ . At the same time, the upper restriction pawl 46 of the interlock plate 43 releases the first driven shift arm ₄₇₁ , and the lower restriction pawl 46' engages with the second and third driven shift arms ₄₇₂ , _473. restrict these movements.

Therefore, if the shift lever 8 is shifted to the 1st or 2nd gear position, the shift system from the shift lever 8 to the drive shift arm 41 operates in the same way as when shifting to the 3rd and 4th gear positions described above. 1 driven shift arm 47 Shifts ₁ in one direction or the other direction,
Establish a first gear train or a second gear train.

Also, to establish 5th gear or reverse gear,
Displace (select) the gear shift lever 8 from the neutral position N to the -R position side, then shift to the position or R position.
When shifted to the position, the driving shift arm 41 engages with the third driven shift arm ₄₇₃ by the same action as described above, and the upper restriction pawl 46 engages with the first and second driven shift arms ₄₇₁ , _472. and lower regulation claw 4.
6' releases the third driven shift arm ₄₇₃ , and the drive shift arm 41 shifts the third driven shift arm ₄₇₃ in one direction or the other to establish a fifth or reverse gear train. However, when selecting in this case, the gear shift shaft 28 must be moved against the set load of the second retaining spring 40, which is larger than the first retaining spring 20.
and the speed change shaft 28 by the steel ball 53.
As the sliding resistance of the shift lever 8 is increased as described above, a relatively large operating force is required. This prevents erroneous selections such as

As described above, according to the present invention, the carrier rotatably supported by the tower via the first shaft is provided with an operating arm extending in the axial direction of the first shaft, and the actuating arm is provided on the tower and is connected to the second shaft. A bell crank lever is rotatably supported on a third shaft extending in the axial direction of the bell crank lever, and the actuating arm and the selection wire are connected via the bell crank lever to constitute the conversion device. The structure is such that both of the three axes are installed in a common tower, and the predetermined relative positions of these two axes can be easily obtained with high precision in manufacturing.As a result, manufacturing errors in the conversion mechanism are extremely small, and the shift lever and the gear shift lever are Rotation around the first axis can be accurately converted into a selection operation of the selection wire. In addition, the structure is simple because the tower forms the support part for both the carrier and the conversion mechanism.Moreover, since the conversion mechanism is installed on one side of the tower, there is no installation space for the conversion mechanism at the base. Since there is no need to provide a base, the base can be made smaller and the device can be made more compact.

[Brief explanation of the drawing]

The drawings show a shift actuating device for an automobile transmission with five forward speeds and one reverse speed, which is an embodiment of the device of the present invention. FIG. 2A is a shift pattern diagram, FIG. 3 is a partially vertical front view of the operating section, FIG. 4 is a longitudinal front view of the operated section, and FIGS. 5 and 6 are FIG. 4. FIG. C... Conversion mechanism, F... Floor plate as vehicle body, 1
... Base plate, 3 ... Tower, 4 ₁ , 4 ₂ , 4 ₃
...1st axis, 2nd axis, 3rd axis, 6...carrier,
8... Gear shift lever, 10... Gear shift lever operating arm,
11i...Shift wire, 11e...Select wire, 12...Carrier operating arm, 13...
Bell crank lever.

Claims (1)

[Scope of utility model registration request] A tower is fixed to a base fixed to the vehicle body, a carrier is rotatably supported on the tower via a first shaft disposed in the longitudinal direction of the vehicle, and a carrier is rotatably supported on the tower, and a gear shift lever is supported via a second shaft, and a conversion mechanism is connected to the carrier for operating a selection wire by rotation of the carrier around a first axis together with the gear shift lever; In the shift actuating device, the shift lever is provided with an actuating arm for operating a shift wire by rotation of the shift lever about a second shaft, and the conversion mechanism is provided on the carrier so as to protrude from the second shaft. a third shaft provided on the tower and extending in the axial direction of the second shaft; and a third shaft rotatably supported by the third shaft, the operating arm of the carrier and the selection wire. A speed change actuating device characterized by comprising a bell crank lever that connects the bell crank lever.