JPS6118020A - Operation mechanism of speed change gear - Google Patents

Abstract

PURPOSE:To facilitate easy speed changing action by having a single H type shift pattern of a shift lever for a speed change gear where main and secondary speed change gears are connected directly to each other. CONSTITUTION:A shift lever 4A is set at a selection position Se1 and at the same time shifted toward (d). Thus sleeves 2g and 1g are shifted to set the 1st speed for move-back. While the 2nd speed is set for reverse when the lever 4A is shifted toward (e). Then the lever 4A is set at selection positions Se2-4. Under these conditions, the lever 4A is shifted toward (d) or (e) to set the 2nd- 6th speeds for advance. Thus an easy speed changing action is possible with a so-called H type shift pattern where the single lever 4A is shifted toward (d) or (e) at each selection point.

Description

[Detailed description of the invention] [Symmetry of the invention and field of application] The present invention relates to an operating mechanism for a transmission in an automobile.

[Prior Art] Conventionally, particularly in trucks, etc., a transmission has been used which combines a main transmission capable of multi-stage shifting and an auxiliary transmission capable of two-stage shifting, high and low.

The feature of this transmission is that due to the presence of the auxiliary transmission, the shifting range of the entire transmission is twice the number of gears in the main transmission, making the entire transmission smaller and lighter compared to the wider number of gears. It has the advantage of being able to

Figure wS1 shows a conventional shift pattern in this type of transmission, where L and H indicate the deceleration and direct gear shift positions in the auxiliary transmission, respectively, and R1 and R2 indicate the reverse first and second gear shifts, respectively. Indicates the position, Fl,
F2, F3, F4, F5, and F6 indicate respective shift positions from the first forward speed to the sixth forward speed.

In this way, the shift pattern in FIG.
It consists of the pattern and the B pattern on the right.

[Problems with the prior art and their technical analysis] In this pattern, assuming that the car is going up a slope, the speed of the car will drop unless the gear change operation is done quickly. , the gear shift may not be possible.

In such a case, if the speed change is performed using the speed change pattern shown in FIG. 1, the following will occur.

For example, if you are currently driving in 4th gear F4, shift down to 3rd gear (5shift do
wn) When attempting to shift to L, in Fig. 1, from the R4 shift position of the B pattern, go through the -1~1, H and L shift positions, and then set to the R3 shift position of the A pattern. It turns out.

Therefore, the gear shifting path becomes extremely complicated, making it extremely difficult to perform the gear shifting.

As mentioned above, this difficulty arises from the shift pattern, which is the second shift pattern below.
This results from the configuration shown in the figure.

In FIG. 2, 10 operates the shift fork in the auxiliary transmission, and 11 and 12 operate the respective shift forks in the main transmission.

In addition, claws 10a, 11a, llb, 12a and 12b
are the parts with which the shift levers are respectively engaged.

The operation of the configuration shown in FIG. 1-1 in FIG. 2 will be explained as follows.

When the shift lever engages with the pawl 10a and the shaft 10 is set to the position shown, this means that the shaft 10 is set to the position H in FIG.

In other words, the sub-transmission has been shifted to high.

From this IN position, slide the shift lever in the select direction to engage the pawl 11a, and operate the shaft 11 in its axial direction with the shift lever. This will result in a shift of R2-F2 in Fig. 1. It turns out.

Furthermore, when the shift lever is moved from the pawl 11a to the pawl 12a and the shirt 12 is operated in its axial direction, this results in a shift from F4 to F6 in FIG.

When shifting from pattern B to pattern A, return the shift lever to the pawl 10a position and shift the pawl 10a to the fob position, which will set it to the L shift position in FIG. That means that.

In other words, the sub-transmission has been shifted to low.

To operate the shaft 11 or 12 from this position, slide the shift lever onto the pawl 11b or 12b, and by operating the pawl 11b or 12b, the shaft 11 or 12 is operated in its axial direction. .

The operation of this shaft 11 or 12 is R1-Fl or F3-F5 in pattern A in FIG.
This means that a shift has been made.

It can thus be seen that the pattern in FIG. 1 arises from the fact that the auxiliary transmission 10 exists independently of the auxiliary transmission 11 or 12.

[Technical Problem] A technical problem of the present invention is to provide a shift pattern that is easy to shift.

[Technical means] The present invention is configured as follows.

The first to nth gear trains branching from the input shaft are sequentially arranged from the first gear train to the first gear train, in which adjacent odd-numbered and even-numbered gear trains constitute one set. nth
/2 to form n/2 sets, and a sleeve is provided for each set between the final gear in the odd-numbered gear train and the other final gear in the even-numbered gear train in the axial direction. interposed, and each of the sleeves is shifted from its neutral position to one or the other direction in the axial direction, whereby the rotation of the final gear or the other final gear is alternatively transmitted to the intermediate shaft. Another sleeve is interposed between the intermediate shaft and one final gear in a gear train branched from the intermediate shaft, and the other sleeve is configured to rotate from its neutral position. a sub-transmission having the above configuration, in which the rotation of the intermediate shaft or the - final gear is alternatively transmitted to the output shaft by shifting to one or the other in the axial direction; In the gear transmission, the shift of the other sleeve in the auxiliary transmission in the axial direction occurs when the shift lever is operated from its neutral position in one or the other direction in the shift direction, and the shift lever connected to an input member in the shift mechanism, the connection being such that when the shift lever shifts from its neutral position to one or the other in the shift direction, the input member is shifted from its neutral position to one or the other in the axial direction a: a reversing mechanism is interposed between the manual member and the reversing member; and b: the reversing mechanism converts the axial movement of the input member into a reverse direction. C: One output member and the other output member are selectively connected to the input member and the reversal member; d: The one output member moves from the neutral position to one side in the axial direction, and either the input member or the reversing member moves from the neutral position to the one side. e: the other output member selectively engages with the member of the reversing member or the input member on the other side in the axial direction from its neutral position; The sleeve is configured to selectively engage with one of the members that moves from the neutral position to the other side, and move only on the other side; , a select member that moves in a direction perpendicular to the axial direction in conjunction with movement of the shift lever in the select direction is interposed between the one output member or the other output member, the select member , when the shift lever is set from the first select position to the n-th select position a: sequentially from the first select position to the one output member or the other output member for each select position; alternately switching the engagement in the axial movement relationship, and b = the two adjacent ones from the first select position;
The following configuration sequentially switches the engagement in relation to the axial movement from the sleeve in the first set to the sleeve in the n/2nd silk for each select position. It consists of

[Effect of technical means] The effects of the configuration of the present invention are as follows.

When the shift lever is set at an arbitrary select position, when the shift lever is shifted in one direction in the shift direction from the neutral position, the following effect occurs.

In the auxiliary transmission, the other sleeve is shifted from its neutral position to one side in the axial direction, and the rotation of the - final gear is set to be transmitted to the output shaft, and that state is set to a low gear ratio in the auxiliary transmission. This means that it has been set.

On the other hand, in the shift mechanism, the input member interlocked with the shift I lever is shifted from its neutral position to one side in the axial direction, and due to this shift, the reversing member is moved from its neutral position via the reversing mechanism. At this time, one output member is connected only with the input member and shifted from its neutral position to one side in the axial direction, and the other output member is connected only with the reversing member and shifted to the other side in the axial direction. shifted from the neutral position to the other position.

When the shift lever is returned to its neutral position from the above state, its action is as follows.

In the auxiliary transmission, the other sleeves are returned to their neutral positions again, resulting in a so-called neutral state in which the flow of power from the intermediate shaft to the output shaft is interrupted.

In contrast, in a shift mechanism, when the input member is returned to its neutral position, the reversing member also returns to its neutral position, and as a result, one output member and the other output member return to their respective neutral positions. It turns out.

Further, when the shift lever is set at an arbitrary select position, when the shift lever is shifted from the neutral position to the other direction in the shift direction, the following effect occurs.

In the auxiliary transmission, the other sleeve is shifted from its neutral position to the other side in the axial direction, and the rotation of the intermediate shaft is set to be transmitted to the output shaft, and that state is set to a high gear ratio in the auxiliary transmission. That means that.

On the other hand, in a shift mechanism, the input member linked to the shift lever shifts from its neutral position to the other side in the axial direction, and due to this shift, the reversing member moves from its neutral position in the axial direction At this time, one output member is connected only with the reversing member and shifted from its neutral position to one side in the axial direction, and the other output member is connected only with the input member and shifted from its neutral position. shifted from one to the other.

When the shift lever is returned to its neutral position from state L, it is returned to the same state as when the shift lever was returned to the neutral position from one side in the shift direction in section 2.

That is, when the shift lever is in the neutral position, the auxiliary transmission, one output member, and the other output member are all set in the neutral position, and the shift lever is shifted to one side in the shift direction. When the gear ratio of the sub-transmission is set to low and the shift lever is
is shifted to the other side in its shift direction, its gear ratio is set high in the auxiliary transmission, and one output member and the other output member are shifted from their neutral position to the other side in their shift direction. Even when operated on the side of the will be shifted only.

In contrast to the above operation in the shift direction, the operation when the shift lever is operated in the select direction at the neutral position in the shift direction is as follows.

When the shift lever is operated in the select direction, the select member that is interlocked with the operation in the select direction is operated in a direction perpendicular to the axial direction.

1, when the shift lever is sequentially set from the first select position to the nth select position,
The selection member, a: sequentially from the first selection position, alternately switches engagement with the one output member or the other output member in its axial movement relationship for each selection position, and b. : from the first select position to each of its two adjacent select positions, sequentially from the sleeve in the first set to the sleeve in the n/2 set in relation to their axial movement; Switch the engagement.

That is, this will be explained more specifically as follows.

1) When the shift lever is set to the first select position, the select member moves one output member to the first select position with respect to its axial movement.
It is connected to the sleeve in group #f, and at this time the other output member is in a state of play.

2) When the shift lever is set to the second select position, the select member directs the other output member to the first position with respect to its axial movement via itself.
It is connected to the sleeve in the program set, and at this time, one output member is in a state of play.

3) When the shift lever is set to the third select position, the select member connects one output member to the sleeve in the second set for its axial movement via itself. However, at this time, the other output member is in a state of play.

4) When the shift lever is set to the fourth select position, the select member moves the other output member to the second position with respect to its axial movement.
It is connected to the sleeve in the program set, and at this time, one output member is in a state of play.

As mentioned above, when the shift lever operates the select position from the 1st and 11th positions to the nth position, -1- notation 1), 2), '3), etc. The output member and the sleeve are connected in accordance with the predetermined fixed engagement order.

In this way, in the main transmission, each sleeve is
, 2), 3), etc., it is connected to one output member or the other output member as appropriate for each select position.

As a result, in the main transmission, when the shift lever is shifted from its neutral position at each select position to one of the shift directions, and when it is shifted to the other shift direction, 1) Select When the position is set to 1st, the 1st
2) When the select position is set to the second gear train, only the rotation in the second gear train is transmitted to the intermediate shaft.
Only the rotation in the gear train at the number is transmitted to the intermediate shaft. 3) When the select position is set to 3rd,
4) When the select position is set to 4th, only the rotation in the 4th gear train is transmitted to the intermediate shaft.
Only the rotation in the gear train is transmitted to the intermediate shaft, and this order can be selected up to the nth select position.

In this way, since both the main transmission and the sub-transmission are operated by a single shift lever, ■) With the shift lever set to the first select position, the shift lever can be moved from its neutral position to the shift direction. When shifting to one side or the other, the first gear train is selected as the transmission path in the main transmission, and in the selected state, a low or high gear ratio can be selected in the auxiliary transmission, 2) 2 In the th select position, the second gear train is selected as the transmission path in the main transmission, and in the selected state, a low or high gear ratio can be selected in the auxiliary transmission; In the select position, the third gear train is selected as the transmission path in the main transmission, and in this selected state, a low or high gear ratio can be selected in the auxiliary transmission.

As described above, the operation mechanism of the transmission of the present invention allows operation of the shift lever in the select direction from the first select position to the nth select position.

All transmission ratios can be selected by a shift pattern consisting of one or the other operation at each select position, ie, a single H-shaped shift pattern.

[Special Effects Achieved by the Present Invention] Detailed Description of the Present Invention The transmission operation mechanism according to the present invention has a shift pattern of a shift lever, even if it is a conventional transmission in which a main transmission and an auxiliary transmission are directly connected. Since it is now possible to use a single H y4, the shift lever can be moved from the first select position to n
This makes it possible to continuously select each gear ratio in the transmission while continuously operating from the nth select position to the first select position.

This makes it possible to take advantage of the characteristics of conventional transmissions that directly connect the main transmission and auxiliary transmission, which are small and lightweight and can have a large number of gears, while also allowing easy single-shift operation. This makes it possible to operate the H-type shift pattern.

Furthermore, the fact that the transmission operating mechanism of the present invention can be used in a conventional small and lightweight transmission in which a main transmission and a sub-transmission are directly connected means that when the transmission is installed in an automobile, the sub-transmission While it is possible to operate the same H-type shift pattern as a conventional transmission without a transmission, it is possible to keep the transmission itself lightweight, contributing to the weight reduction of automobiles. [Examples] The present invention will be described below based on Examples.

FIG. 3 shows a conventional type transmission in which the main transmission 1 and the auxiliary transmission 2 are directly connected, in a side sectional view, and
FIG. 3 also shows the main body portion of the transmission according to the embodiment of the present invention.

In FIG. 3, the input shaft 1a, the intermediate shaft 1h, and the output shaft 2f are each supported by the casings (not shown) of the main transmission 1 and the auxiliary transmission 2.

The input shaft 1a, the intermediate shaft 1h, and the output shaft 2f are arranged in series, and the subshaft IC and the subshaft 2b are arranged parallel to the input shaft 1a, etc. The gear lb is connected to the input shaft 1a, 1d, gear le, gear 1f and gear 1g are countershaft 1c
The gear 2a is fitted or fixed to the intermediate shaft 1h, and the gear 2C and the gear 2d are fitted or fixed to the subshaft 2b, so that the respective shafts and gears rotate at the same time.

Gear li, gear 1j, and gear 1 are fitted to intermediate shaft 1h so that they can rotate freely, and gear 2e is fitted to output shaft 2.
It is fitted to f so that it can rotate freely.

Gear ib and gear 1d, gear 11 and gear 1e, and gear 1j and gear if are always in mesh,
Gear 1 and gear 1g are always in mesh with each other via an idle gear (not shown).

Further, the gear 2a and the gear 2C, and the gear 2d and the gear 2e are also always in mesh with each other.

The hubs 1m and tp are fitted onto the intermediate shaft 1h so as to rotate at the same time, and the hub 2h is fitted onto the output shaft 2f so that they rotate at the same time. is a sleeve which is spline fitted to each of the hubs 1m, ip and 2h and is slidable in the axial direction.

A concave groove (not shown) perpendicular to the axis is formed on the outer periphery of each of the sleeves In, lq, and 2g, and the forks 3D, 3B, and 4D in FIG. ing.

The configuration of FIG. 4 will be explained below.

Figure 4 shows sleeves in, 1q and 2 in Figure 3.
The operating device of g is shown in a side sectional view.

In FIG. 4, the sleeve operating device 3 in the main transmission l consists of a fork head 3A, forks 3B and 3D, and the forks 3B and 3D are slidably attached to a shaft 4E in its axial direction and circumferential direction, respectively. It is fitted to allow rotational movement.

The perforation 3Ac in the fork head 3A fits into the shirt 4E to allow sliding in the axial direction, and the fork head 3
The tip of the screw 3Ad screwed into A protrudes into a groove 4Ea cut into the shirt 4E.

Therefore, the relationship between the fork head 3A and the shaft 4E is such that the fork head 3A can freely slide in the axial direction relative to the shirt 4E.
When the fork head 4E rotates and swings in the circumferential direction about its axis, the fork head 3A also rotates and swings together with the shaft 4E via the groove 4Ea and the screw 3Ad.

Here, the rotational oscillation is performed at select positions Set, S shown in FIGS. 5, 6, 7, 8, 9, and 10.
The configuration is such that it can be set in four positions: e2, Se3, and Se4.

Further, the relationship between the fork head 3A and the forks 3D and 3B is as shown in FIGS. 5 and 6.

FIG. 5 shows a good cross section in FIG. 4, and the fork 3D has a protrusion 3Da and arms 3Db and 3Dc, and the arms 3Db and 3DC have claws 3De and 3Dd, respectively.

FIG. 6 shows the Rollo cross section in FIG. 4, and the fork 3B has a protrusion 3Ba and arms 3Bb and 3Bc, and the arms 3Bb and 3BC have claws 3Be and 3Bd, respectively.

In addition, in FIGS. 5 and 6, claws 3Dd and 3D
e fits into the groove of the sleeve In, and the claws 3Bd and 3B
(e fits into the groove of sleeve tq, so the shirt)
Even if the forks 3D and 3B rotate and swing to the respective angles of the select positions Se1 to Se4, the forks 3D and 3B
It does not rotate as E rotates and oscillates.

In addition, the selection positions Set, Se2, Se3 and Se
4 is the fork head 3 in the swinging position when the fork head 3A rotates and swings with the shirt) 4E.
This corresponds to the position of the claw 3Ae or 3Af of A.

The groove 3Ab in the fork head 3A is formed when the select position of the fork head 3A is Se3 and Se3.
When the selection position is Set and Se2, the groove 3Aa in the fork latch 3A engages with the protrusion 30a of the fork 3D, and when the select position is Set and Se2, the groove 3Aa engages with the protrusion 3Ba of the fork 3B. together,
Furthermore, in FIG. 4, the shift lever 4A is pivotally connected to a fulcrum portion 4Aa, and its tip 4Ab is fitted into a hole 4Ba in the shift lever housing 4B.

The groove 4Bd in the shift lever housing 4B allows the post 4 of the fork 4D to slide integrally in the axial direction thereof.
The shirt 4E is fitted through the perforation 4Db of the fork 4D and the perforation 4Bc of the shift lever housing 4B, with the shirt 4E sandwiching the opening 4B.

The shaft 4E is fitted with a pin 4Bb so that it operates integrally with the shift lever housing 4B, but the fork 4
D allows rotational movement.

FIG. 7 shows the direction indicated by the arrow in FIG.
f, and the claws 4De and 4Df fit into the grooves of the sleeve 2g in FIG.

Here, the shift lever 4A has a fourth shift lever centered around the fulcrum 4Aa.
It is possible to swing in the d direction or the e direction within the plane shown in the figure, and this direction of movement will be referred to as r shift direction 1 hereinafter.

Furthermore, the shift lever 4A is pivoted clockwise or counterclockwise within the plane shown in FIG.
, Se3, and Se4, and the direction of this movement is hereinafter referred to as r-select direction 1.

In FIG. 7, when the shift lever 4A is swung from the illustrated select position Sel in the select direction of the select position Se4, the tip 4Ab is swung leftward.
At this time, the shift lever housing 4B is oscillated counterclockwise about the shirt 4E.

In this case, the shaft 4E has a hole A in the fork 4D.
It is in a relationship that it swings together with the shift lever housing 4B while sliding within Db.

FIG. 8 shows a cross section of the cheek in FIG. 4, and the fan-shaped pawl 4Be fixed to the shift lever housing 4B is fitted into the groove 5Aa so as to be slidable in the selection direction.

FIG. 9 shows a cross section of FIG. 4, and the relationship between the fork head 3A and the shift head 5D is such that at the select positions Se2 and Se4, the pawl 3Af of the fork head 3A engages with the grooves 5Dd and 5De, respectively. In each of the select positions Set and Se3, the fork head 3A and the shift head 5D do not engage with each other.

FIG. 10 shows a cross section of the unit in FIG. 4, and the relationship between the fork head 3A and the shift spatula F5C is such that at each of the select positions Set and Se3, the pawl 3Ae of the fork head 3A engages with the grooves 5Cd and 5Ce, respectively. There is a matching relationship, and the select position Se2
At each position Se4, the fork head 3A and the shift head 5C are in a non-engaging relationship.

FIG. 11 shows the view from the arrow in FIG. 4, and the arm 5Ea is fixed to the transmission case (not shown).
are pivotally connected, and tips 5Ec and 5Eb of arm 5E
are engaged with a groove 5Ab cut in the shirt 5A and a groove 5Bb cut in the shaft 5B, respectively.

shirt) 5A is the perforation 5Cb made in the shift head 5C
The shaft 5B is fitted into a hole 5Db formed in the shift head 5D so as to be able to slide in the axial direction, and the shaft 5B is fitted into a hole 5Ca formed in the shift head 5C and a hole 5Db formed in the shift head 5D.
Both of the holes 5Da are fitted to allow sliding movement in the axial direction.

11-rings 5Ac and 5BC are fitted into respective grooves provided in each of the shirts 5A and 5B between the shift head 5C and the shift head 5D.

Shan) In 5A and 5B, 5Ad, 5Ae, 5
Each of B, d and 5Be is a groove, and each of 5Cc and 5Dc is fitted into the respective hole of the shift head 5C and 5D, and the tip thereof is inserted into the groove 5 of the shaft 5A.
This is a pin that can be moved and fitted into either groove 5Bd or 5Be of Ad or 5Ae and shirt 5B, respectively.

Moreover, the illustration in FIG. 11 shows a state in which the shift lever 4A is set at its neutral position in the shift direction.

The operation of the second configuration will be explained below.

In the illustration in FIG. 4, the shift lever 4A is set at a neutral position in the shift direction.

In such a state, the fork 3 in FIG.
Since D, 3B, and 4D are all set at neutral positions, sleeves 1n, 1q, and 2g in FIG. 3 are also all at neutral positions.

Therefore, in this state in FIG. 3, the engine (
(not shown) is not transmitted from the input shaft 1a to the output shaft 2f via the main transmission 1 and the auxiliary transmission 2.

First, from this state, remove sleeve 1q or in
Only the operation of the main transmission l in which only the main transmission l is operated will be described.

In the main transmission l, when only the sleeve iq is operated from the state shown in FIG.
d, the countershaft 1c, the gear 1g, the idle gear (not shown), and the gear 1 are transmitted to the intermediate shaft 1h via the sleeve 1q and the hub 1p.

In this case, since the idle gear is interposed between the gear 1g and the gear 1, the rotation of the intermediate shaft lh is reversed with respect to the rotation of the input shaft 1a.

Moreover, if only the sleeve 1q is operated from the state shown in FIG. 3 to connect the gear lj and the hub ip, the power flow will be from the input shaft 1a, the gears 1b and ld, the subshaft 1c,
It is transmitted to the intermediate shaft ih via gears if and lj, sleeve tq, and hub ip.

In this case, the transmission is such that the input shaft 1a rotates at a low speed during forward operation due to the illustrated gear ratio.

By operating only the sleeve In from the state shown in Fig. 3,
When the gear 11 and the hub 1m are connected, the power flows through the input shaft 1a, the gears 1b and 1d, the subshaft IC2 and the gear 1.
It is transmitted to the intermediate shaft 1h via the sleeve 1n and the hub 1m.

In this case, the transmission is such that the input shaft 1a rotates at a medium speed during forward operation due to the illustrated gear ratio.

Furthermore, if only the sleeve 1n is operated from the state shown in FIG. 3 to bring the gear 1b and the hub 1m into a coupled state, the power flow will flow through the input shaft 1a, the gear lb, the sleeve In, and the hub 1m. Transmitted to shaft 1h.

In this case, the rotation of the input shaft 1a is directly transmitted to the intermediate shaft lh without going through the subshaft 1c, so the rotation of the intermediate shaft 1h is directly connected to the input shaft 1a at high speed. .

That is, the main transmission l allows the following speed change operations.

1) For gear 1, reverse operation in the 1st gear train of Ig.

2) Low speed operation in the second gear train of gears 1j and 1f.

3) Medium speed operation in gear train number 3 of gear 11.1e.

4) Directly connected high-speed operation.

Next, the operation of the auxiliary transmission 2 will be explained in contrast to the operation of the main transmission 111 described above.

When the sleeve 2g is operated to connect the hub 2h and the gear 2e from the neutral state in FIG. 2g and the hub 2h to the output shaft 2f.

On the other hand, when the sleeve 2g is operated to connect the knob 2h and the gear 2a from the neutral state shown in FIG. In other words, the speed change operation in the auxiliary transmission 2 is 1) low speed operation.

2) Directly connected high-speed operation.

There are two ways.

3, the main transmission 1 and the sub-transmission 2 are capable of shifting independently, but the main transmission 1 and the sub-transmission 2
are directly connected by the intermediate shaft 1h, so the overall speed change range of this transmission consisting of the main transmission 1 and the auxiliary transmission 2 is the same as the speed change range of the main transmission 1 and the 2-way range of the auxiliary transmission 2. It is the product of the shifting range of .

In the end, the overall speed change range is as follows: 1) The transmission path on the side of the main transmission 1 is fixed to the first gear train of gears 1k and 1g, and the transmission path on the side of the auxiliary transmission 2 is Operation in 1st and 2nd gear of reverse with shift operation.

2) Change the transmission path on the main transmission 1 side to gear 1j, second gear If
Forward 1st and 2nd speed operation with fixed gear train No. 1 and low/high shift operation on the auxiliary transmission 41!2 side.

3) Connect the transmission path on the side of the main transmission 1 to the third gear 11, le.
3rd and 4th forward speeds are operated by fixing the gear train to the No. 1 gear train and performing low and high shift operations on the side of the auxiliary transmission 2.

4) The transmission path on the main transmission 1 side is fixed to the second gear train of gear ib, and the forward 5th and 6th speeds are shifted by low and high shift operations on the auxiliary transmission 2 side. driving.

In contrast to the operation described in FIG. 3 above, the operation of the operation mechanism for operating the sleeves in, lq, and 2g in FIG. 3 will be explained below.

When the shift lever 4A is set at an arbitrary select position, when the shift lever 4A is shifted from the neutral position in the direction of arrow d (FIG. 4) in the shift direction, the following effect occurs.

The tip 4Ab shifts the housing lever 4B to the right, and due to this shift, the shift lever housing 4B shifts the fork 4D from the current neutral position to the right in FIG.
will similarly shift the shirt 5A from its current neutral position to the right via the groove 5Aa.

Shifting the fork 4D to the right in FIG.
The fork 4D shifts the sleeve 2g to the right in FIG. 3, thereby placing the sub-transmission 2 in a low gear shift state.

Further, the fact that the shift lever housing 4B shifts the shaft 5A to the right causes the following effects to occur in the shift mechanism 5.

When the shaft 5A shifts to the right from the neutral position in FIG. 11, the shift mechanism 5 enters the state shown in FIG. 12.

That is, in FIG. 12, when the shirt) 5A shifts to the right from the neutral position, the shift head 5C shifts the shirt) 5
It is shifted to the right by the retaining ring 5Ac fitted on A.

At this time, since the arm 5E interposed between the shafts 5A and 5B rotates counterclockwise around the pin 5Ea, the shirt 5B shifts to the left.

At this time, the shifter 5D is shifted to the left by the retaining ring 5Bc fitted on the shaft 5B, thereby causing the pin 5Cc fitted in the hole of the shift head 5C to shift to the left.
(shirt) 5A groove 5Ad (pin 5Dc located at ill and fitted into the hole of shift head 5D is shirt) 5
It will be in a state where it is located on the groove SBe side of B.

The operation when the shift lever 4A is returned to its neutral position from the above state is as follows.

Sub-shift I! 2, since the fork 4D returns to the neutral position shown in FIG. 4, the sleeve 2g also returns to the fork 4.
D, the intermediate shaft 1 is returned to the neutral position shown in FIG.
The flow of power from h to the output shaft 2f is interrupted, resulting in a so-called neutral state.

On the other hand, in the shift mechanism 5, the shift lever 4
When A returns the shift lever housing 4B to the state shown in FIG. 4, both shirts 5A and 5B return to the neutral position shown in FIG. 4, but at this time pin 5Cc of shirts 5A Since the shift head 5C enters the groove 5Ad and is engaged with the shaft 5A, the shift head 5C is shifted together with the shaft 5A toward the neutral position In in FIG.
The shift head 5D is also shifted together with the shaft 5B toward the neutral position n in FIG. 12, and its final state is returned to the state in FIG. 11. It will be.

In response to the above action, when the shift lever 4A is set at an arbitrary select position, when the shift lever 4A is shifted from the neutral position in the direction of arrow e (FIG. 4) in the shift direction, The following effects occur.

The tip 4Ab shifts the housing lever 4B to the left, and as a result of this shift, the shift lever housing 4B shifts the fork 4D from its neutral position to the left in FIG. Via Aa, the shaft 5A will likewise be shifted to the left from its neutral position.

Shifting the fork 4D to the left in FIG.
The fork 4D shifts the sleeve 2g to the left in FIG. 3, thereby placing the sub-transmission 2 in a high gear shift state.

Further, the fact that the shift lever housing 4B shifts the shaft 5A to the left causes the following effect in the shift mechanism 5.

When the shirt 5A shifts to the left from the neutral position in FIG. 11, the shift mechanism 5 enters the state shown in FIG. 13.

That is, in FIG. 13, when the shirt (shirt) 5A shifts to the left from the neutral position, the shift rod (5D) shifts to the left (shaft 5).
It is shifted to the left by the retaining ring 5Ac fitted on A.

At this time, the shaft 5A shifts to the left, causing the arm 5E to rotate clockwise around the pin 5Ea, thereby shifting the shaft 5B to the right.

Further, the shift head 5C is shifted to the right by a ring 5Bc fitted on the shaft 5B.

At this time, the pin 5C inserted into the hole of the shift head 5C
c is located on the groove 5Bd side of the shaft 5B, and the pin 5Dc fitted into the hole of the shift head 5D is located on the groove 5Ae side of the shirt 5A.

Therefore, as the shift lever 4A is returned to its neutral position again, the shirt shown in FIG.
Even when both 5A and 5B are returned to the neutral position, the shift head 5C is moved toward the neutral position n by the shaft 5B, groove 5Bd, and pin 5Cc, and the shift head 5D is moved by the shaft 5A, groove 5Ae, and pin 5Dc, respectively. It will be returned to you.

That is, when the shift lever 4A is shifted in the direction of arrow d or e, the auxiliary transmission 2 sets its gear ratio to low or high, but in the shift mechanism 5, the shift lever 4A is shifted from its neutral position to the direction of arrow d. Or e
Even if it is shifted in any direction,
The shift head 5C shifts only on the right side from its neutral position, and the shift head 5D shifts only on the left side from its neutral position.

In response to the operation in the shift direction described above, the effect of operating the shift lever 4A in the select direction at the neutral position in the shift direction is as follows.As shown in FIG. As the selection position Se4 is operated in the selection direction, the shaft 4
E swings counterclockwise via the shift lever housing 4B, and conversely, the shift lever 4A moves to the select position S.
When the shirt 4E is operated in the selection direction from e4 to the selection position Sel, the shirt 4E swings clockwise.

- In this way, when the shirt 4E swings around its axis due to the operation of the shifter/< -4A, the fork head 3A also swings around the axis of the shaft 4H via the groove 4Ea and the screw 3Ad. Become.

In this case, when the shift lever is sequentially selected from the first select position Set to the fourth select position Se4, the relationship in which the fork head 3A selectively engages with the fork 3B or 3D in its axial direction is as follows. 6th
The relationships shown in Figures and Figure 5 are as follows.
2) At the select positions Sel and Se2, the fork head 3A engages with the fork 3B via the groove 3Aa and the protrusion 3Ba, and at the select position between these, the fork head 3A and the fork 3D do not engage. At positions Se3 and Se4, the fork head 3A engages with the fork 3D via the groove 3Ab and the protrusion 3Da, and at the selenoid position M between these, the fork head 3A and the fork 3B do not engage. There is.

Further, the relationship in which the fork head 3 A selectively engages with the shift head 5 C or 5 D in the axial direction is the first one.
The relationship is shown in Figure O and Figure 9, and the relationship is as follows: l) At select positions Set and Se3, the fork head 3A shifts to the shift head 5C by selectively engaging the pawl 3Ae with the groove 5Cd or 5Ce. and in this ffl+ select position, the fork head 3A
2) At select positions Se2 and Se4, the fork head 3A engages with the shift head 5D by selectively engaging the pawl 3Af with the groove 5Dd or 5De, and during this time, the fork head 3A engages with the shift head 5D. At the select position, the fork head 3A and the shift rod 5C do not engage.The above relationship is established.

As a result, the relationship in which the fork head 3A engages with each shift and each fork as shown in -1- is as shown in the portion surrounded by solid lines in Table 1.

That is, using Table 1, the shift operation of the entire transmission will be explained as follows.

1) When the shift lever 4A is set to the select position Sel, the 5C side of the shift head engages with the fork 3B via the fork head 3A.

At this time, the shift head 5D is in a state of play in its width, and the fork 3D is not engaged with the fork head 3A.

a: In this state, when the shift lever 4A is shifted in the direction of arrow d in FIG. 4, the fork 4D shifts the sleeve 2g to the right in FIG.
e is interlocked with the output shaft 2f, and at this time the shift lever
Since the movement of 4A in the d direction operates shift head 5C from its neutral position to the right in FIG. 4, shift head 5C shifts sleeve Iq to the right via fork head 3A and fork 3B, and gear 1k It will be set to a state in which it is interlocked with the intermediate shaft 1h.

As mentioned above, in this state, the first reverse gear (R1 in Table 1) is set b:- In response to the operation a above, the shift lever 4A is shifted from the neutral position at this select position Sel. When the fork 4D shifts the sleeve 2g to the left in FIG. 3 in the direction of arrow e in FIG. 4, the fork 4D shifts the sleeve 2g to the left in FIG. The movement is the same as in a above, in order to operate the shift head 5C from its neutral position to the right in FIG.
q is shifted to the right, and the gear 1k is set to be interlocked with the intermediate shaft 1h.

As mentioned above, this state is set to the second reverse gear (R2 in Table 1).When the shift lever 4A is shifted in the d direction at the select position SeL, the power The flow is 1 in Figure 14.
The flow is shown by the dotted line, and the selection position S
When the shift lever 4A is shifted in the e direction at e1, the flow of power becomes the flow shown by the broken line in the figure.

That is, when the select position Set is selected, the transmission path in the main transmission l is selected as the first gear train consisting of the gear trains tg and 1k, and in the select position, the shift lever 4A is moved in the d direction and the e direction. By sequentially shifting to , the first reverse speed and the second reverse speed can be selected.

Note that FIG. 14 shows a skeleton diagram of FIG. 3.

2) When the shift lever 4A is set to the select position Se2, the 5D side of the shift head engages with the fork 3B via the fork head 3A.

At this time, the shift head 5C is in a state of play in its width, and the fork 3D is not engaged with the fork head 3A.

a: In this state, when the shift lever 4A is shifted in the direction of arrow d in Fig. i4, the fork 4D shifts the sleeve 2g to the right in Fig. 3 to interlock the gear 2e with the output shaft 2f, and At this time, since the movement of the shift lever 4A operates the shift head 5D from its neutral position to the left in FIG.
is shifted to the left, and the gear 1j is set to be interlocked with the intermediate shaft 1h.

In this state, as described above, the vehicle is set to the first forward speed.

b:- When the shift lever 4A is shifted from the neutral position at the select position Se2 in the direction of arrow e in FIG.
D shifts the sleeve 2g to the left in Fig. 3 and replaces the gear 2a.
is interlocked with the output shaft 2f, and at this time the shift lever 4
The movement of A is the same as a above. To operate the shift head 5D from its neutral position to the left in Fig.
D shifts the sleeve tq to the left via the fork head 3A and the fork 3B, and sets the gear 1j to be interlocked with the intermediate shaft 1h.

In this state, as described above, the second forward speed is set.

That is, when the select position Se2 is selected, the transmission path in the main shift I11 is selected as the second gear train consisting of the gear trains 1f and 1j, and the shift lever 4A is moved in the d direction and the e direction at the select position. By sequentially selecting and shifting, the first and second forward speeds can be selected.

-1- Select positions Set and Se in Table 1
As can be understood from the explanation of 2, the fork head 3A always engages with the fork 3B in the two adjacent select positions of the select position Sel and the select position Se2, and in this engaged state, the fork head 3A is in the select position. engages with the shift head 5C at position Sel;
At the next select position Se2, the fork head 3A engages with the shift head 5D, and according to the order of engagement, shifts the shift lever 4A from the select position Se1 to the select position Se2 in the d direction and the e direction in FIG. 4, respectively. By doing so, the first reverse speed (R1), the second reverse speed (R2), and the first forward speed shown in Table 1 can be achieved.
speed and forward speed can be obtained sequentially.

Furthermore, following the above-mentioned speed change operation, when the select position is selected to Se3 and Se4, the fork head 3A
engages with the fork 3D, the engagement between the fork head 3A and the fork 3B is released, and the fork 3D operates the sleeve In in FIG.

In this case, a first set including a sleeve tq constituted by the first gear train (the gear 1 and Ig row) and the second gear train (the gear 1j and if row) in FIG. Considering the second set including the sleeve 1n constituted by the third gear train (row of gears 1i and le) and the fourth gear train (row of gears 1b and ld), the first set and The second set has exactly the same configuration in which the sleeves shift in the axial direction.

In addition, as shown in Table 1, the order of engagement of the fork rad 3A and each shift head is at select positions Set and Se.
2 (i.e., the case of the gear change operation in the first group) and the case of select positions Se3 and Se4 (i.e., the case of the gear change operation in the second group) have exactly the same engagement order. .

Therefore, in the shift operation in the second set, the shift lever 4A is moved from the select position Se3 to the select position Se.
In the process of selecting 4, shift up (shift up) in the same way as in the first set.
ft up), the speed changes will be from the third forward speed to the sixth forward speed shown in Table 1 using the third gear train and the fourth gear train in the main transmission l. This means that the gear ratio can be selected.

In addition, in the embodiment shown in FIG. 3, the main transmission l
, there are only the first set and the second set of gear trains, but in Fig. 3, suppose we further provide a virtual fork 3x and a virtual third set, If you wish to perform a gear shift operation in the third set by 3x, the first
As can be understood from the explanation in the table, in the third set of gear shifting operations, new selection positions Se5 and Se6 are added.
It becomes possible to provide

In this case, the engagement order between the fork head 3A and each shift head at the select position mSe5 or Se6 is based on the engagement order in the first set and the second set in Table 1. It is clear that the engagement order should be set as surrounded by the imaginary line, and each gear ratio from 7th gear to 10th gear can be newly selected depending on the engagement order. , these sets can be further provided up to the n-th set according to the engagement order shown in Table 1.

Here, it will be easily understood that in contrast to the above-mentioned upshift operation, the shift down operation can be performed in the reverse order of the above-mentioned operation.

1. In the above embodiment of the present invention, as shown in FIG. 15, the shift pattern is as shown in FIG.
at each select position Se1. in the select direction. Se2, Se
3 or S84, and the shift lever 4A is shifted in the d or e shift direction at each select position, so that the gear change operation can be performed by a so-called H-type shift pattern.

5, R1, R2, l, 2, 3.4 in Figure 15
．． 5 and 6 indicate the shift positions of the first reverse speed, the second speed, the first forward speed, the second speed, the third speed, the fourth speed, the fifth speed, and the sixth speed.

In the above embodiment, the shift lever 4A is configured to directly operate the shift lever housing 4B, and its movement in the shift direction matches the movement of the fork 4D, etc. in the axial direction. .

However, in this configuration, a link mechanism is interposed between the shift lever 4A and the shift lever housing 4B, and the movement of the shift lever 4A in the shift direction and the movement of the fork 4D, etc. in the axial direction are in different directions. It's okay.

In short, in the present invention, the movement of the shift lever 4A in the shift direction causes the shift lever housing 4B to move in the axial direction, and the movement of the shift lever 4A in the select direction causes the shaft 4E to swing around its axis. It would be a good thing if it were.

Further, in FIG. 11, the arm 5E is configured to reverse the shift in one direction of the shirt 5A and transmit the reversed movement to the other shirt 5B. The reversal may also be accomplished by a rack and pinion arrangement.

That is, a pinion is fitted to the pin 5Ea, and the shaft 5
A configuration may also be adopted in which racks are cut out at A and 5B and these racks and pinions are engaged.

In short, in the shift mechanism 5, a reversing mechanism (5E) is interposed between the shirt h5A, which is an input member from the shift lever housing 4B, and the shaft 5B, which is a reversing member, so that the input member and the reversing member are mutually connected. It is necessary to have a configuration in which the shift is made in the opposite direction.

As is clear from the above description, the gist of the present invention in the above embodiments is as follows.

Each gear train from the first gear train (the gear train of gears 1 and Ig) branched from the input shaft 1a to the nth gear train (the gear train of gears 1b and 1d) is n72 from the 1st to the n/2th gears in which one set is constructed for each of the adjacent odd-numbered and even-numbered gear trains.
forming a set of sets, and between the final gear (gear 1 or li) in the odd-numbered gear train and the other final gear (gear 1j or 1b) in the even-numbered gear train, in the axial direction, A sleeve (lq or in) is provided for each set, and each sleeve is shifted from its neutral position to one side or the other in the axial direction, thereby controlling the rotation of the final gear or the other final gear. A main transmission 1 configured as described above, which transmits power alternatively to an intermediate shaft ih, the intermediate shaft, and a gear branched from the intermediate shaft.
Another sleeve 2g is interposed between the - last gear 2e in the gear train (gear train of gears 2e and 2d), and the other sleeve shifts from its neutral position to one or the other in the axial direction. Accordingly, in a gear transmission consisting of both transmissions, the sub-transmission 2 having the above configuration, in which the rotation of the intermediate shaft or the - final gear is alternatively transmitted to the output shaft; The shift of the other sleeve in the axial direction occurs when the shift lever 4A is operated from its neutral position to one side or the other side in the shift direction, and the shift lever is connected to the input member (
Shirt) 5A), the connection being such that when the shift lever shifts from its neutral position to one or the other in the shift direction, the input member is shifted from its neutral position to one or the other in the axial direction. The shift mechanism includes: a: a reversing mechanism (arm 5E) is interposed between the input member and the reversing member (shirt) 5B), and b: the reversing mechanism is arranged such that the shaft in the input member C: The input member and the reversing member are connected to one output member (shifting member). head 5C) and the other output member (shift head 5D) are selectively connected; d: the one output member is connected to the input member or the other output member on one side in the axial direction from its neutral position; Among the reversing members, the reversing member is configured to selectively engage with one of the members that moves from the neutral position to the one side, and move only on the one side, e: the other output member, On the other side in the axial direction from the neutral position, selectively engages with either the reversing member or the input member that moves from the neutral position on the other side, and It has the above-mentioned structure, and is configured to move only in the axial direction, and between each of the sleeves and the one output member or the other output member, there is a movement in the axial direction in conjunction with the movement of the shift lever in the select direction. A select member (fork head 3A) that moves in orthogonal directions is interposed, and the select member is configured to set the shift lever from the first select position (Set) to the nth (S e 4) select position. When.

a: Sequentially from the first select position, for each select position, the engagement in the axial movement relationship is alternately switched to the one output member or the other output member, and b: the first select position. from the select position of the two adjacent
The following two configurations include sequentially switching the engagement in relation to the axial movement from the sleeve in the first group to the sleeve in the n/2nd group for each select position. It consists of

[Brief explanation of the drawing]

FIG. 1 shows a shift pattern of the shift lever in a conventional transmission having an auxiliary transmission 2, and FIG. 12 shows a shift pattern in a conventional transmission forming the shift pattern shown in FIG. FIG. 3 shows a front view of the shaft, and FIG. Figure 3 shows the transmission main body part of the embodiment of the present invention, and Figure 4 shows the sleeves in, 1q, and 2 in Figure 3.
Fig. 5 is a cross-sectional side view showing an operating mechanism of a transmission according to an embodiment of the present invention for operating g.
FIG. 7 shows a cross-sectional view of Rolo in FIG. 4, FIG. 8 shows a cross-sectional view of Ho-ho in FIG. 4, and FIG. Figure 1O shows a sectional view of the unit in Figure 4, Figure 11 shows a view taken along the arrow in Figure 4, and Figures 12 and 13 each show ¥! FIG. 14 shows a skeleton diagram of the gear train in FIG. 3, and FIG. 15 shows the shift lever 4A in FIG. 4. This shows the shift pattern. The main codes used in the examples are as follows. 1: Main transmission, la: input shaft, lh: intermediate shaft,
In and lqnisleeve, 1m and lp: hub. 2: Sub-transmission, 2f: Output shaft, 2g=Sleeve,
2h: hub. 3A: fork head, 3B and 3D: fork. 4A: Shift lever, 4B: Shift lever housing,
4D: Fork, 4E: Shaft. 5: Schiff) 41 structure, 5A and 5B: shaft,
5C and 5D: shift head, 5E: arm. Patent applicant: Aisin Seiki Co., Ltd. Representative: Reio Nakai Figure 1 Figure 2

Claims (1)

[Claims] 1. Each of the first to nth gear trains branched from the input shaft has one gear train for each of the adjacent odd-numbered and even-numbered gear trains, starting from the first gear train. n/2 sets are formed from the first to n/2 sets, and the axial direction between the final gear in the odd-numbered gear train and the other final gear in the even-numbered gear train is A sleeve is interposed between each of the sets, and each sleeve is shifted from its neutral position to one or the other in the axial direction to select the rotation of the final gear or the other final gear. The main transmission configured as described above transmits power to the intermediate shaft in one go, and another sleeve is interposed between the intermediate shaft and one final gear in the gear train branched from the intermediate shaft, Said other sleeve is shifted from its neutral position to one side or the other side in said axial direction, whereby the rotation of said intermediate shaft or said one final gear is alternatively transmitted to the output shaft. In the gear transmission comprising both transmissions, the shift of the other sleeve in the auxiliary transmission in the axial direction is performed by shifting the shift lever from its neutral position to one or the other in the shift direction. The shift lever is connected to an input member in the shift mechanism, and the connection is such that when the shift lever is shifted from its neutral position to one side or the other in the shift direction, the input member is connected to the shaft. a) a reversing mechanism is interposed between the input member and the reversing member; b: the reversing mechanism is shifted from its neutral position to one side or the other in the direction; The axial movement in the input member is reversed to an axial movement in the opposite direction, and the reversed movement is transmitted to the reversing member, c: The input member and the reversing member have one side. and the other output member are configured to selectively connect, d: The one output member is connected to the input member or the reversing member on one side in the axial direction from its neutral position, selectively engaging with one of the members that moves on the one side from the neutral position, and moving only on the one side, e: the other output member moves from the neutral position on the shaft; On the other side in the direction, the reversing member or the input member is configured to selectively engage with the other member that moves from the neutral position to the other side, and move only on the other side. With the above-mentioned configuration, a space between each of the sleeves and the one output member or the other output member moves in a direction perpendicular to the axial direction in conjunction with the movement of the shift lever in the select direction. A select member is interposed, and the select member is configured to: when the shift lever is set from the first select position to the n-th select position, a: sequentially from the first select position, for each select position; Alternately switching engagement with the one output member or the other output member in relation to their axial movement, and b: from the first select position to each of the two adjacent select positions, Sequentially, the first
An operating mechanism for a transmission having the above configuration, wherein engagement in relation to axial movement is switched from the sleeve in the nth/second group to the sleeve in the n/2nd group.