JPS58132819A - Variable speed operation mechanism for horizontal type speed change gear - Google Patents

Abstract

PURPOSE:To operate a select lever surely and smoothly, by providing the select lever and a positioning mechanism for positioning this select lever in a variable speed operation mechanism to enhance the lock effect of the select lever for an incomplete select operation. CONSTITUTION:The variable speed operation mechanism for a horizontal type speed change gear is provided with a select device 22, and a positioning mechanism 40 is provided between a shaft 33 of the mechanism 22 and a select lever 34. The operation of the select lever 34 of the device 22 is controlled by fitting between a ball 41 of the mechanism 40 and a groove 42; and if the ball 41 is slipped off from positions of plural shift grooves 42a-42c because of an incomplete select operation, the ball 41 remains in a select groove 42d, and the select lever 43 is locked. When a change lever 20 is turned left, the select lever 34 of the device 22 and an interlock plate 35 are moved downward in accordance with the guide of the ball 41 of the mechanism 40 and the select groove 42d by turning of a change lot 21 and a lever 38, and thus, the lcok effect of the select lever 34 is enhanced. The select lever 34 is operated surely and smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speed change operation mechanism for a horizontally mounted transmission mounted in a vehicle such as an automobile in the left-right direction of the vehicle body, and in particular between a change rod from a change lever and a plurality of shifter rails. The present invention relates to a device for positioning a select position in a select device installed in a Gj.

In general, there are two types of vehicles: vertically mounted transmissions that are mounted facing the front and rear directions of the vehicle, and horizontally mounted transmissions that are mounted facing the left and right sides of the vehicle. For the plurality of shifter rails arranged in parallel along the machine, the direction of the change rod from the change lever is the same, so there is no need to change the direction of shift and select operations. Therefore, the lever at the end of the change rod is configured to simply selectively engage multiple shifter rails during the selection operation, and in this case, the lever at the end of the change rod is configured to simply engage selectively with the multiple shifter rails. In order to prevent this, an interlock mechanism using a bottle or ball is provided in the middle of the shifter rail, and this mechanism also has the function of locking the shifter rail at each shift position.

On the other hand, in the case of horizontal installation, the pusher is interlocked with the shifter rail, so a select device for changing the operating direction is installed between the two. for example, to selectively engage any one of the shifter arms of the three shifter rails,
Shift] ~ Select lever that moves the engaged shifter rail in the axial direction when operated, only if this select lever moves h 'F during select operation, it will move together and the select lever may be accidentally moved during select operation. The interlock plate, etc. that prevents selecting two shifter rails is K.
n IJ. If the select operation position of the select lever is incomplete and the gear is shifted while accidentally engaging the gear arm of two shifter rails, the interlock plate will lock to prevent shifting to either of the shifter rails. Since it is designed to be covered, if there is such a defect in the selection operation, the inter [1] switch plate will act as a stopper and receive excessive force, making it necessary to increase the strength of the electric current by that amount. In addition, when the select lever moves up and down, for example, the three positions from 91 to 91 are not clearly positioned, so if the distance between the shifter arms varies and widens, the selector lever may slip into the gap between the shifter arms. There were also some problems.

The present invention was made in view of these circumstances, and
In a select device installed between a shift rod and a plurality of shifter rails, a select lever and a positioning mechanism for positioning the select lever are attached to the select device to eliminate malfunctions in selecting the select lever. The purpose is to provide a mechanism.

In addition, as a prior art related to the provision of a ball and groove mechanism for positioning the shift position of the gear shifter 1 to the device in the present invention, for example, Japanese Utility Model Publication No. 48-34452
No. 54-15652, but these are aimed at neutral f It is designed to increase the force and prevent gear noise. Therefore, the purpose of this invention is completely different from that of the present invention, and the position and shape of the groove that fits into the ball are also completely different in terms of structure.

An embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 is used to explain a transmission system including a transverse transmission to which the present invention is applied.
A transmission 3 is mounted on the engine 1 via a mechanical clutch 2 in a direction rm+u in the direction of the small body ht1, and a final reduction gear 4 is disposed at right angles to the clutch side of the transmission 3.

The transmission 3 is of a constant mesh type, and the output shaft 6 is arranged flat fj to the input shaft 5 from the clutch 2. Large first continuous drive and driven 4!177,
7', 2nd speed drive and driven fi78.8'
, a third continuous drive and driven gears i7'), 9', and a fourth continuous drive and driven gears io, io' are provided in sequence, and each of these driven gears t77', 8
', 9', 10' are the output shaft 6
゛, adjacent driven gears 7' and 8', 9' and 10
A synchronizing mechanism 11, 12 is provided between the output shaft 6 and the output shaft 6, respectively. Further, a reverse gear 13' is formed on the sleeve 11a of the synchronization mechanism 11, and this gear 1713'
is connected to gear 1 on the input shaft side via an idler gear (not shown).
3, and as a result, the synchronization mechanism 11
By shifting the sleeve 11a to the right side or li-side in the figure and integrally coupling the driven gear A77' or 8' to the output shaft 6, the first or second speed can be set to the synchronizing mechanism 12.
The sleeve 12a of the vehicle is similarly shifted to obtain third or fourth speed, and the idler gear is further shifted to one side to obtain reverse speed.

Next, an output gear 14 is attached to the clutch-side end of the output shaft 6, and this gear 14 meshes with the final gear 15 of the final reduction gear 4 so that the shifted power from the transmission 113 is further decelerated and extracted. The final gear 15 connects the left and right middle wheels to the axle 1 via the differential mechanism 16.
7. Transmission is configured in 18. ...The speed change operation mechanism of such a horizontal transmission 3 is shown in FIGS. 1 and 2. To explain with reference to FIG. 3, the change rod 21 from the change lever 20, which is operated in the shift pattern shown in the figure, is connected to the differential mechanism 16. The change rod 21 passes under the boundary between the transmission 3 and the clutch 2 and is RQg perpendicular to the transmission 3.
is connected to the shifter rail side via a select position 22 for direction change. That is, the first speed and second speed jitter rails 23. 3rd speed and 4th speed shifter rails 24,
Shifter rails 25 for reverse speed are arranged parallel to each other on a horizontal plane. The shifter rail 23 includes a fork 26 that engages with the sleeve 11a of the synchronous machine H411, and a shifter arm 2.
7, the shifter rail 24 has a fork 28 and shifter arm 29 that similarly engage with the sleeve 12a of the FFJ mechanism 12, and the shifter rail 25 has an idler gear puller 13'' for reverse gear that operates via a reversing link $51,930. Shifter arms 31 are respectively attached, and as shown in FIG.
1 are arranged so as to overlap one another in sequence.

The selection device 22 is configured as detailed in FIGS. 4 and 5.
A shaft 33 is vertically mounted within the housing 32, and this shaft 33
The select lever 34 is fitted with the select lever 34 so that it can move in the 1-position when the select operation is performed and rotate when the shift operation is performed. It is attached as much as possible to move it. Also,
An engagement cap 37 biased by a spring 36 is attached to the small diameter portion 33.1 at the top of the shaft 33 so that it is interlocked only when the select lever 34 and the interlock plate 35 are operated to select reverse speed. It is a provision. The select lever 34 has a locking portion 3 that projects in the radial direction at an angle of approximately 9019.
4a and the connecting portion 34b are connected to the right, and the connecting portion 34b is connected to the lever 38 from the change rod 21, so that the select lever 3
4 is moved up and down, and the select lever 34 is rotated in response to the axial movement during shift operation. On the other hand, a groove 3 on the housing 32 side is located at 21111 points below -L of the locking portion 34a.
The interlocking tongues 35a, 35b of the interlock plate 35, which are fitted into the interlocking plate 9 and prevented from rotating, are arranged close to each other, and these locking portions 34a and the tongues 35a, 35b are arranged close to each other.
35b are lined up in a line as shown in FIG. 4 in the neutral position. Then, the engagement J [portion 34a and tongue] in this neutral position
i'35a, 35b" - the recesses 27a, 29a, in the shifter arm 27, 29, 31,
31a are provided so that they can be engaged with each other, and here the engaging part 34a moves up and down to form the recessed part 27a.

When engaging either one of 29a or 31a, the tongue pieces 35a and 35b cover the other two to prevent accidental engagement of the two at the same time and jitter.

In such a configuration, as shown in FIGS. 6 and 7, the select lever 34 and the shaft 33 of the sereno [~device 22] During the operation, the positioning mechanism 40 for the select position
will be provided. This mechanism 40 is embedded in the locking portion 34a side of the select lever 34, and consists of a ball 41 and a hole 42 formed on the shaft 33 side, into which a part of the ball 41 always fits. The full 42 is formed like the shift pattern of the select lever 34 in the case of the shift operation 4, and when the locking part 34a engages with the recesses 27a, 29a, 31a of the shifter arm 1k27, 29, 31, respectively. Three horizontal lines 1- corresponding to the position of the ball 41
These three shift grooves 42a have a 2-shift groove 42a, a 3-4 shift groove 42b, and an R-shift groove 42c.

42c, Sereno 1 where 42c is vertical in neutral position
It is connected to 42d.

Since the present invention is configured in this manner, the operation of the select lever of the select device 22 is regulated by the engagement of the ball 41 of the positioning mechanism 40 with the groove 42, and the ball 41 may be moved due to an incomplete select operation. Each shift full 42a
, 42b, 42c, the ball 4
1 stays in the select groove 42d and locks the select lever 34 so that it does not rotate even if a shift operation is attempted.

Now, when the change lever 20 is tilted to the left, the rotation of the change rod 21 and lever 38 causes the select lever 34 of the select device 22 and the interlock plate 35 to move into the select groove 42d perpendicular to the ball 41 of the positioning mechanism 40.
It moves downward guided by the mating of. If the select operation in this case is incomplete, the ball 41 will come off the shift lever 42a, and by stopping the lever 34 to rotate, the subsequent shift operation will be easier and the select operation will be completed. When the ball 41 is rotated, the ball 41 matches and fits into the shift f4 A2a. On the other hand, at this time, the tongue pieces 35a of the interlock plate 35 are -1-2 shift arms 29.
The four parts 29a and 31a of 31 are closed, and the part 3 of 11 is closed.
4a is securely engaged only with the four parts 27 of the lowest shifter arm 27. When the f-engine lever 20 is tilted forward in this state, the select lever 34 is guided by the engagement of the ball 41 and the shift groove 42a and rotates in one direction, and the shifter 7 engages with the locking portion 34a described in J-. -1 to 27 and the shifter rail 23. This results in the fork 26 being moved to the right side in FIG. Then, when the ball 41 reaches the end of the shift 'f442a, the C1 synchronizing mechanism 11 operates reliably and the C first speed is obtained.

Thereafter, the 2nd. Third. Fourth and reverse speeds are obtained. In the above embodiment, the case of four forward speeds and one reverse speed has been described, but it goes without saying that the same applies to the case of five forward speeds including the fifth speed.

As is clear from the above description, according to the present invention, in the select device 22 for one direction change in the shift operation mechanism of a horizontal transmission, the positioning mechanism 40 is located between the shaft 33 and the select lever 34 and the shaft 33. is provided, and this mechanism 40 restricts the movement of the select lever 34 when the select operation is incomplete. Since the positioning mechanism 40 is installed at a location where the split bamboo is large between the shaft 33 and the shaft portion of the select lever 34, the effect of one click of the select lever 34 during an incomplete selection operation is large. Guided by this positioning mechanism 40, the select lever 34 reliably and smoothly selects and shifts the shift arm 2.
7.29°31 Sneaking into the mutual gap is prevented.

[Brief explanation of the drawing]

FIG. 1 is a skeleton diagram showing an example of a horizontal transmission to which the present invention is applied, FIG. 2 is a plan view of a part of the speed change operation mechanism,
FIG. 3 is a sectional view taken along the line ■-■ in FIG. 2, FIGS. 4 and 5 are a sectional view and a perspective view of the selection device, and FIGS. 6 and 7 are a sectional view and a perspective view of the main parts of the present invention. It is. 3...Horizontal transmission, 20...Change lever, -1
21..."f-1 engine rod, 22...Select device, 23.24.25...Jino Tarel, 27.29
．． 31... Shifter arm, 32... Housing, 33...
・Axis, 34...Select lever, 35...Interval plate, 40...Positioning mechanism, 41...
- Grooves, 42a, 42b, 42c...shift groove, 42d...select groove. Patent Applicant, Patent Attorney, Fujijuchogyo Co., Ltd. Atsushi Kobashi, Patent Attorney Figure 7 Figure 3

Claims (1)

[Claims] A change rod from a change lever is connected to a selector 1 for changing direction through a device so as to selectively engage and operate shifter arms of a plurality of jitter rails for obtaining each gear stage, and 1- select device. The select lever is attached to a vertical shaft inside the housing that moves up and down during the select operation, and is aligned without rotating during the shift operation, and the interlock plate on the select lever moves up and down together only during the select operation. A select position positioning mechanism is provided between the select lever and the shaft bean, and the select position is comprised of a ball and a groove that is always fitted into the ball.
A shift operation mechanism for a horizontal transmission, characterized in that the line groove has a plurality of shift grooves arranged at each select position, and a select groove that communicates the shift grooves at a neutral position.