JPH07139628A - Park lock device of manual transmission - Google Patents

Abstract

PURPOSE:To improve the economical efficiency by setting the shift position where an input shaft is not engaged though an output shaft is engaged to a reverse idler gear to make use of the reverse idler gear to a park lock device. CONSTITUTION:In a manual transmission where the reverse transmission stage can be selected by the engagement between an input shaft 1 and an output shaft 2 through a reverse idler gear 15 and the reverse transmission stage can be released by releasing the engagement, the shift position where the input shaft 1 is not engaged though the output shaft 2 is engaged is set to the reverse idler gear 15. An engaging part 16 which is rotatably engaged with a transmission case 3 is provided on the reverse idler gear 15 at this shift position. This constitution allows the output shaft 2 to be park locked to allow the parking condition when the reverse idler 15 is set to this shift position. The park lock device is constituted by making use of the reverse idler gear 15 which is essential to the manual transmission, and is very economical.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual transmission park lock device useful for a manual transmission, particularly an electric vehicle.
And a manual transmission equipped with this parking lock device.

[0002]

2. Description of the Related Art An electric vehicle requires a parking lock device for the manual transmission even if the transmission provided at the subsequent stage of the motor is a manual transmission due to the characteristics of the motor as the prime mover.

By the way, if a dedicated manual transmission for an electric vehicle is to be manufactured, the development cost is high and it is uneconomical. Therefore, a parking lock device is installed in an existing manual transmission for an internal combustion engine. It was common to add and make it in time.

However, at this time, the parking lock device has a parking pole pivotally supported on the transmission case as used in an automatic transmission, and when the driver operates the parking pole, the parking pole is operated. It is common sense to engage a parking gear connected to the output shaft, thereby fixing the output shaft and enabling parking.

[0005]

However, since such a common sense parking lock device is constructed without using any existing parts of the manual transmission, a manual transmission equipped with a parking lock device for an electric vehicle has been developed. It is still uneconomical, if not to the extent that it does.

It is an object of the present invention to develop a parking lock device using a reverse idler gear which is indispensable for a manual transmission, and thereby eliminate the above-mentioned uneconomical situation.

A further object of the present invention is to improve the operability of a manual transmission equipped with this parking lock device.

[0008]

To this end, the parking lock device of the first invention is capable of selecting a reverse gear by the meshing between the input and output shafts via a reverse idler gear, and the reverse idler gear is used as an axis line. In a manual transmission that can release the reverse speed by shifting the gears in the direction, the reverse idler gear is set to a shift position that meshes with the output shaft but does not mesh with the input shaft, The reverse idler gear is provided with a meshing portion that is rotationally engaged with the transmission case at the shift position.

In a second aspect based on the first aspect, the meshing portion of the transmission case in which the meshing portion of the reverse idler gear is rotationally engaged can be shifted to the transmission case on the same axis as the reverse idler gear. It is formed on a non-rotating member elastically supported by.

A third invention proposes a manual transmission for an electric vehicle, which is equipped with the parking lock device of the first invention.
The forward speed can be selected by meshing the input and output shafts via the constant mesh gear set, and the reverse speed can be selected by meshing between the input and output shafts via the selective mesh gear set including the reverse idler gear. In the manual transmission, the forward speed is achieved by rotating the gear on the output shaft among the gears forming the always meshing gear set to the output shaft by one-way shifting operation of the coupling sleeve, and moving backward. The shift speed is configured to be achieved by meshing the reverse idler gear with the input shaft and the coupling sleeve in the neutral position by a shift operation in the other direction, and the reverse idler gear is disengaged from the meshing with the input shaft, Set the parking lock position beyond the other direction shift operation position while still meshing with the coupling sleeve in the neutral position, and at the parking lock position, The engagement portion for rotational engagement to the speed machine casing, but on the reverse idler gear.

A fourth aspect of the present invention is the same as the third aspect, wherein the coupling sleeve and the reverse idler gear are
It is configured to perform a shift operation by sliding a common shift rod.

In a fifth aspect based on the third aspect, the meshing portion of the transmission case in which the meshing portion of the reverse idler gear is rotationally engaged can be shifted to the transmission case on the same axis as the reverse idler gear. It is formed on a non-rotating member elastically supported by.

[0013]

In the first aspect of the invention, the manual transmission selects the reverse shift speed by meshing the input and output shafts via the reverse idler gear, and shifts the reverse idler gear in the axial direction to move the input and output shafts between the input and output shafts. The reverse gear can be released by releasing the meshing of.

Here, when the reverse idler gear is in the shift position where it meshes with the output shaft but does not mesh with the input shaft, the meshing portion of the reverse idler gear rotationally engages the transmission case, and the output shaft is parked. It can be locked and parked.

By the way, since the parking lock device for obtaining such a parking state is constructed by utilizing the reverse idler gear which is indispensable for the manual transmission, it is very economical.

According to a second aspect of the present invention, in the first aspect of the present invention, the meshing portion of the transmission case in which the meshing portion of the reverse idler gear is rotationally engaged can be shifted to the transmission case on the same axis as the reverse idler gear. Since it is formed on the non-rotating member that is elastically supported by the non-rotating member, this non-rotating member constitutes the waiting mechanism of the parking lock device, and when the reverse idler gear is in the shift position where the above parking lock should be obtained, the meshing portion thereof is Even if there is a phase shift with respect to the meshing portion of the non-rotating member, the shift position can be operated.
From this state, when the above phase shift is eliminated by a slight rotation of the output shaft, the meshing portion of the reverse idler gear is rotationally engaged with the meshing portion of the non-rotating member,
The output shaft can be park locked.

In the manual transmission for an electric vehicle according to the third aspect of the present invention, the forward speed can be selected by the meshing between the input and output shafts via the constant mesh gear set, and the selective mesh gear set including the reverse idler gear can be used. It is possible to select the reverse gear by the meshing between the input and output shafts.When selecting the forward gear, select the gear on the output shaft among the gears forming the above-mentioned constant mesh gear set from the coupling sleeve. The forward shift speed is achieved by rotationally engaging the output shaft with the directional shift operation.When selecting the reverse shift speed, the reverse idler gear is shifted in the other direction to the input shaft and the coupling sleeve at the neutral position. Engage to achieve reverse gear.

When the reverse idler gear is moved to the parking lock position beyond the shift operation position in the other direction, the reverse idler gear is disengaged from the meshing with the input shaft and meshes with the coupling sleeve in the neutral position. As it is, the meshing portion is rotationally engaged with the transmission case.
This makes it possible to park the output shaft and park it.

By the way, since the parking lock device for obtaining such a parking state is constructed by utilizing the reverse idler gear which is indispensable for the manual transmission, it is very economical.

According to the third aspect of the invention, the fourth aspect
As in the invention, the coupling sleeve and the reverse idler gear can be shift-operated by sliding the common shift rod, and the shift operation pattern is set to the forward shift speed selection position, the reverse shift speed selection position, and the parking lock selection position. The shift operability can be improved as a straight line pattern in which all the select positions are located on a straight line.

In a fifth aspect based on the third aspect, the meshing portion of the transmission case in which the meshing portion of the reverse idler gear is rotationally engaged can be shifted to the transmission case on the same axis as the reverse idler gear. Since it is formed on the non-rotating member that is elastically supported by the non-rotating member, this non-rotating member constitutes the waiting mechanism of the parking lock device, and when the reverse idler gear is in the shift position where the above parking lock should be obtained, the meshing portion thereof is Even if there is a phase shift with respect to the meshing portion of the non-rotating member, the shift position can be operated. From this state, when the phase shift is eliminated by a slight rotation of the output shaft, the meshing part of the reverse idler gear rotatably engages with the meshing part of the non-rotating member to lock the output shaft. can do.

[0022]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows a manual transmission for an electric vehicle equipped with a parking lock device according to an embodiment of the present invention.
Is an input shaft, 2 is an output shaft, and 3 is a transmission case. The input / output shafts 1 and 2 are arranged parallel to each other and rotatably supported in the transmission case 3.

A forward input gear 4 and a reverse input gear 5 are formed on the input shaft 1, and a forward output gear 6 is formed on the output shaft 2.
Is rotatably fitted and a synchronous meshing mechanism 7 is provided. The forward output gear 6 is always meshed with the forward input gear 4, and the synchronous meshing mechanism 7 appropriately drives and couples the forward output gear 6 to the output shaft 2.

For this reason, the synchronous meshing mechanism 7 includes a synchro hub 8 spline-fitted to the output shaft 2 and a coupling sleeve 9 spline-fitted to the outer circumference of the synchro hub.
And a clutch gear 10 drivingly connected to the forward output gear 6.
And a balk ring 11 fitted to the outer peripheral cone surface of the clutch gear as main constituent elements, as well known.

The coupling sleeve 9 has a reverse output gear 12 formed on the outer periphery thereof so as to be displaceable in the axial direction on the synchronizing hub 8. The displacement positions of the coupling sleeve 9 are the forward shift speed selection position 9-D closest to the forward output gear 6, the neutral position 9-N that gradually moves away from the forward output gear 6, and the reverse shift speed selection position 9-R. , And park lock positions 9-P.

The coupling sleeve 9 meshes with the clutch gear 10 under the synchronizing action of the balk ring 11 at the forward gear selection position 9-D, whereby the forward output gear 6 is engaged.
Is drive-coupled to the output shaft 2, but the forward output gear 6 is not drive-coupled to the output shaft 2 at other shift positions.

The reverse gear selection position 9-R of the coupling sleeve 9 is determined so that the reverse output gear 12 formed on the outer periphery of the coupling sleeve 9 is aligned with the reverse input gear 5. Position 9-
P determines that the reverse output gear 12 is not aligned with the reverse input gear 5.

A final drive pinion 13 is formed on the output shaft 2, and the final drive pinion 13 is meshed with a ring gear of a differential gear unit (not shown) to drive-couple the output shaft 2 to the drive wheels of the electric vehicle.

A reverse idler shaft 14 is fixedly installed in the transmission case 3 and arranged in parallel with the input / output shafts 1, 2. And reverse idler shaft 14
The reverse idler gear 15 is rotatably and slidably supported on the upper side.

The reverse idler gear 15 has a neutral position 15-N, which is the limit position shown by the solid line, which is the closest to the forward input gear 4, a reverse gear position selection position 15-R, which gradually moves away from the forward input gear 4. And park lock position 15-
Set P and. The reverse idler gear 15
At the neutral position 15-N, between the forward input gear 4 and the reverse input gear 5, no power transmission is performed,
Reverse gear selection position 15-R and parking lock position 1
5-P, the reverse output gear 12 on the coupling sleeve 9 at positions 9-R and 9-P of the same name as these.
Then, the reverse input gear 5 continues to be meshed.

The reverse idler gear 15 is further shown in FIG.
Of the reverse idler gear 15 has an internal tooth spline 17 that receives the rotational engagement of the spline meshing portion 16 at the park lock position 15-P of the reverse idler gear 15. The non-rotating member 18 is slidably fitted on the reverse idler shaft 15 so as to be slidable. Then, the non-rotating member 18 is elastically supported by the spring 19 at the limit position shown in the drawing, thereby enabling the rotational engagement between the meshing portion 16 and the internal tooth spline 17, and at the same time, the meshing portion 16 and the internal tooth. Even when the spline 17 cannot be rotationally engaged due to a phase shift, the non-rotating member 18 is retracted to the position shown by the chain double-dashed line so that the reverse idler gear 15 can be shifted to the parking lock position 15-P for the time being. Configure a waiting mechanism to

The meshing portion 16 and the internal tooth spline 17
As shown in FIG. 2, chamfer surfaces 16a and 17a are formed at the ends adjacent to each other so that the meshing portion 16 and the internal tooth spline 17 can be easily rotationally engaged with each other. good.

The shift operation system of the manual transmission is constructed as shown in FIGS. Coupling sleeve 9
(See FIG. 1) to provide the shift fork 21 and to engage with the reverse idler gear 15 to provide the shift lever 22, the shift fork 21 is coupled to the shift rod 23, and the shift lever 22 includes the pin 24. It is pivotally supported in the transmission case 3 via.

The shift rod 23 is slidably supported in the axial direction and supported by the transmission case 3, and a shifter 26 is separately attached on the shift rod 23. This shifter 23 has a protrusion 26
And is engaged with the L-shaped slot 22a of the shift lever 22, as shown in FIG.

One end of the L-shaped select lever 27 is engaged with the tip of the shifter 26, and the other end of the select lever 27 is
It is articulated via a striking rod 28 to a control lever 29 in the driver's seat. The select lever 27 is pivotally attached to the transmission case via a pin 27a, and its pivot axis extends in a direction perpendicular to the shift rod 23 so that the striking rod 28 can be operated when the control lever 29 is operated. The shift rod 23 is slid in the axial direction via the select lever 27.

The control lever 29 is provided with a forward gear selection position D, a neutral position N, a reverse gear selection position R, and a parking lock position P, which are sequentially set adjacent to each other. And the shift rod 23
The coupling sleeve 9 (see FIG. 1) is connected via the shift fork 21 to the forward gear selection position 9-D and the neutral position 9-.
N, reverse gear selection position 9-R, and park lock position 9-P, and at the same time the protrusion 26 on the shifter 25.
4 is shifted to the forward gear selection position 26-D, the neutral position 26-N, the reverse gear selection position 26-R, and the parking lock position 26-P.

However, as shown in FIG. 4, the shift lever 2
The L-shaped slot 22a of 2 has a neutral position 26 of the protrusion 26.
-N and the forward shift speed selection position 26-D are not displaced, the reverse idler gear 15 does not restrain the movement of the protrusion 26, that is, the stroke of the shift rod 23, and the reverse idler gear 15 moves to the limit position (neutral position 15 in FIG. 4). -N), the shift rod 23 can be moved between the forward shift speed selection position and the neutral position.

The operation of the above embodiment will be described below. At the neutral [N] position of the control lever 29 shown in FIGS. 3 and 4, the coupling sleeve 9 and the reverse idler gear 15 operated by the shift fork 21 are
It is in the neutral position shown at 9-N and 15-N in FIG. Therefore, the rotation to the input shaft 2 reaches the forward output gear 6 via the forward input gear 4 and reaches the reverse input gear 5, but is not transmitted to the output shaft 2 and the vehicle can be stopped. .

When the driver shifts the control lever 29 from the neutral position (N) shown in FIGS. 3 and 4 to the forward shift speed selection position (D), the shift rod 23 has the projection 26 shown in FIG.
It is displaced so as to come to the position indicated by 26-D. During this time, the shift lever 22 is kept at the position shown in FIG. 4 and the reverse idler gear 15 is kept at the corresponding position 15-N, but the shift fork 2 shifts the coupling sleeve 9 to the 9-D position in FIG. As a result, the forward output gear 6 is drive-coupled to the output shaft 2, and the vehicle can be made to travel forward in a forward gear selection state in which the rotation of the input shaft 1 is transmitted to the output shaft 2 via the gears 4 and 6. .

When the driver selects the control lever 29 from the neutral [N] position shown in FIGS. 3 and 4 in the reverse direction to the reverse gear position selection position (R), the shift rod 23 has the projection 26 shown in FIG. It is displaced so as to come to the position indicated by 26-R. At this time, the shift lever 22 is rotated from the position of FIG. 4 to the upper part of FIG. 4, and the reverse idler gear 15 is stroked to the 15-R position of FIG. 1, and the shift fork 21 is used to move to the 9-R position of FIG. Reverse output gear 12 on coupling sleeve 9 and reverse input gear 5
Mesh with each other. As a result, the vehicle can be made to travel in reverse in a selected reverse gear position in which the rotation of the input shaft 1 is transmitted to the output shaft 2 via the reverse input gear 5, the reverse idler gear 15, and the reverse output gear 12.

When the driver selects the control lever 29 to the parking lock position P in FIG. 3, the shift rod 23 is displaced so that the protrusion 26 comes to the position indicated by 26-P in FIG. At this time, the shift lever 22 is rotated further upward in FIG. 4 to stroke the reverse idler gear 15 to the 15-P position in FIG. Here, the reverse idler gear 15 is disengaged from the meshing with the reverse input gear 5, and the meshing portion 17 is formed with the internal tooth spline 1 of the non-rotating member 18.
Invade 7. On the other hand, reverse idler gear 15
Maintains the meshing state with the reverse output gear 12 on the coupling sleeve 9 in the 9-P position in FIG. Therefore,
The output shaft 2 includes the coupling sleeve 9, the gear 12, the reverse idler gear 15, the meshing portion 17, and the non-rotating member 1.
The vehicle is parked with the vehicle being stopped from rotating with respect to the transmission case 3 via 8.

At this time, even when the meshing portion 16 and the internal tooth spline 17 are in contact with each other due to the phase shift and cannot enter each other, the non-rotating member 18 resists the spring 19 and is shown in FIG.
To escape to the position of the chain double-dashed line, the control lever 29
The above operation can be performed to the P position of. When the above-mentioned phase shift is eliminated, the non-rotating member 18 is pushed by the spring 19 so that the meshing portion 16 and the internal tooth spline 17 can be meshed by mutual intrusion, and the vehicle is parked. Can be in a state.

By the way, since the parking lock device for obtaining such a parking state is constructed by utilizing the reverse idler gear 15 which is indispensable to the manual transmission, the parking lock device and the manual operation for the electric vehicle equipped with the parking lock device are provided. The transmission can be built cheaply and is very economical.

Further, according to the manual transmission for an electric vehicle equipped with the parking lock device shown in FIG. 1, as shown in FIGS. 3 and 4, the shift operation system of the shift rod 23 has a common select position. Can be obtained by slide,
The gear shift operation pattern may be a straight line pattern in which all the select positions are located on a straight line, so that the gear shift operability can be greatly improved.

[0045]

As described above, in the parking lock device for a manual transmission according to the first aspect of the present invention, the reverse idler gear is set with a shift position that meshes with the output shaft but does not mesh with the input shaft. Since the reverse idler gear has a meshing part that is rotationally engaged with the transmission case at the shift position, the reverse locker gear that is indispensable for a manual transmission is used to configure the parking lock device. A parking lock device and a manual transmission for an electric vehicle equipped with the parking lock device can be manufactured at low cost, which is very economical.

According to a second aspect of the present invention, in the park lock device according to the second aspect of the present invention, in the first aspect of the present invention, the meshing portion of the transmission case in which the meshing portion of the reverse idler gear is rotatably engaged is provided with a reverse idler. Since the non-rotating member is rotatably supported by the transmission case on the same axis as the gear, the non-rotating member constitutes a waiting mechanism of the parking lock device, and the reverse idler gear can obtain the parking lock. Even if the meshing portion is out of phase with the meshing portion of the non-rotating member at the proper shift position,
The shift position can be operated, and operability can be improved in this respect as well.

In the manual transmission for an electric vehicle according to the third aspect of the present invention, the forward speed can be selected by the meshing between the input and output shafts via the constant mesh gear set, and the selective mesh gear set including the reverse idler gear can be used. It is possible to select the reverse gear by the meshing between the input and output shafts.When selecting the forward gear, select the gear on the output shaft among the gears forming the above-mentioned constant mesh gear set from the coupling sleeve. The forward shift speed is achieved by rotationally engaging the output shaft with the directional shift operation.When selecting the reverse shift speed, the reverse idler gear is shifted in the other direction to the input shaft and the coupling sleeve at the neutral position. The reverse idler gear is set to the park lock position beyond the above-mentioned other direction shift operation position by meshing to achieve the reverse shift speed. , Removed from the engagement with the input shaft, while engaged with the coupling sleeve of the neutral position, by engagement rotational engagement the engagement portion to the transmission case, since the structure so that the possible parking lock state,
The park lock device is constructed by utilizing a reverse idler gear which is indispensable for a manual transmission, which is very economical as in the first aspect of the present invention, and the coupling sleeve and the reverse as described in claim 4. Since the idler gear can be shifted by a common shift rod, the shift operation pattern is such that all the select positions of the forward shift speed selection position, the reverse shift speed selection position, and the parking lock selection position are located on a straight line. As a linear pattern, it is possible to improve the shift operability.

In a fifth aspect based on the third aspect, the meshing portion of the transmission case in which the meshing portion of the reverse idler gear is rotationally engaged can be shifted to the transmission case on the same axis as the reverse idler gear. Since the non-rotating member is elastically supported, the non-rotating member constitutes the waiting mechanism of the parking lock device, and when the reverse idler gear is in the shift position where the parking lock is obtained, the meshing portion thereof is Even if there is a phase shift with respect to the meshing portion of the non-rotating member, the shift position can be operated.

[Brief description of drawings]

FIG. 1 is a developed sectional view of a manual transmission for an electric vehicle equipped with a parking lock device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing details of a parking lock engagement portion as a cross section taken along the line AA in FIG.

FIG. 3 is a perspective view showing a coupling sleeve operating portion of a gear shift operating system used in the manual transmission of FIG.

FIG. 4 is a perspective view showing a reverse idler gear operating portion of a shift operation system used in the manual transmission of FIG.

[Explanation of symbols]

 1 Input shaft 2 Output shaft 3 Transmission case 4 Forward input gear 5 Reverse input gear 6 Forward output gear 7 Synchronous meshing mechanism 9 Coupling sleeve 12 Reverse output gear 13 Final drive pinion 15 Reverse idler gear 16 Meshing part 17 Internal spline 18 Non-rotating member 21 Shift fork 22 Shift lever 23 Shift rod 25 Shifter 26 Projection 27 Select lever 28 Strike rod 29 Control lever

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyoshi Ario 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Inventor Isamu Onuma 2 Takaracho, Kanagawa-ku, Yokohama, Nissan Nissan Motor Co., Ltd. Within

Claims (5)

[Claims] 1. A reverse shift speed can be selected by meshing the input / output shafts via a reverse idler gear, and the reverse idle gear can be shifted in the axial direction to release this meshing, thereby causing a reverse shift. In a manual transmission capable of releasing a gear, a shift position that meshes with an output shaft but does not mesh with an input shaft is set in the reverse idler gear, and at the shift position, a meshing portion that rotationally engages with a transmission case is provided. , A reverse lock idler gear provided in a manual transmission park lock device. 2. The meshing portion of the transmission case, with which the meshing portion of the reverse idler gear is rotationally engaged, is slidably supported by the transmission case on the same axis as the reverse idler gear. A manual transmission characterized by being formed on a non-rotating member. 3. A forward shift speed can be selected by meshing between the input and output shafts via a constant mesh gear set, and a reverse shift can be performed by meshing between the input and output shafts via a selective mesh gear set including a reverse idler gear. In the manual transmission in which the gear can be selected, the forward gear is one of the gears forming the constant mesh gear set.
The gear on the output shaft is achieved by rotationally engaging the output shaft by one-way shifting operation of the coupling sleeve, and the reverse gear is operated by shifting the reverse idler gear in the other direction to shift the input shaft and the neutral position. The reverse idler gear is disengaged from the meshing with the input shaft and remains in mesh with the coupling sleeve in the neutral position beyond the shift operation position in the other direction. A manual transmission for an electric vehicle, characterized in that a park lock position is set, and a meshing portion that is rotationally engaged with a transmission case at the park lock position is provided in a reverse idler gear. 4. The manual transmission for an electric vehicle according to claim 3, wherein the coupling sleeve and the reverse idler gear are configured to be shifted by sliding a common shift rod. 5. The meshing portion of the transmission case, with which the meshing portion of the reverse idler gear is rotationally engaged, is elastically supported by the transmission case on the same axis as the reverse idler gear. A manual transmission for an electric vehicle, characterized in that it is formed on a non-rotating member.