JPH023778A - Manual shaft device for transmission - Google Patents

Abstract

PURPOSE:To permit a layout to increase its degree of freedom by forming a manual shaft into structure inserting only its one end side into a case and supporting the other end side to the outside of the case. CONSTITUTION:A manual shaft 5 inserts its bottom end part into a case 1, penetrating through a mounting hole 1a formed in the case 1, while supports the bottom end part turnably in a metal contact condition with this mounting hole 1a. On the contrary, the manual shaft 5 arranges its intermediate part and upper end part in the outside of the case 1. And the upper end part of the manual shaft is turnably supported through a synthetic resin made bush 11 in a flange part 1c formed in the outside of the case 1.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is a device that is rotatably provided in a transmission case (hereinafter referred to as a case) in an automatic transmission, a manual transmission, etc., and that corresponds to the operation of a control lever. The present invention relates to a manual shaft device that rotates to switch the operation of a select mechanism.

(Conventional technology) Conventionally, manual shaft devices for automatic transmissions include:
For example, r Nl5SAN Full range electronically controlled automatic transmission FULL RANGEE
-AT RE4ROIA type maintenance manual” (1988)
March.

The one described in Nissan Motor Co., Ltd. (Published by Nissan Motor Co., Ltd.) and the one used in the M+75ELC 4-speed automatic transmission manufactured by Himeki Motor Co., Ltd. are known.

Of these conventional devices, the former has the manual shaft a supported in a cantilever (1, ton) as shown in FIG. 4, and the latter has the manual shaft a supported as shown in FIG.
A manual shaft b is supported at both ends (at two points), and both manual shafts a and b are supported in metal contact inside the case.

(Problem to be Solved by the Invention) However, in the former of the above-mentioned conventional devices, the manual shaft is supported in a cantilevered manner.
There is a problem in that the closer you go to the tip, the more the vibration increases, and the support becomes unstable, which tends to cause malfunctions.

In the latter case, although the above problem can be solved, since both parts that support the manual shaft are provided inside the case, the support position with respect to the case is limited, and there is less freedom in terms of layout. .

In other words, due to the layout, conventional manual shafts are placed on the outside of the vehicle, away from the passenger compartment, where there is no problem of interference with the final reduction gear, etc., so the distance from the control lever inside the passenger compartment is longer. , so many members are interposed between the shaft and the lever, leading to an increase in the number of parts, a decrease in precision, and malfunction.

The present invention has been made by paying attention to the above-mentioned problems, and has as its common objective the improvement of performance such as operability, reliability, and product precision of manual shafts.

The object of the present invention is to solve this problem by the following means based on a new support structure and arrangement, and to provide a manual shaft device for a transmission that improves the overall performance of the manual shaft.

(Means for solving the problems) In order to solve the above problems and achieve the above objectives,
In the manual shaft device for a transmission according to claim 1,
In a transmission in which a manual shaft is installed inside the transmission case to operate the select mechanism in conjunction with the operation of a control lever installed inside the vehicle,
One end of the manual shaft inserted into the transmission case is rotatably supported in metal contact with the transmission case, and is prevented from coming off by an engaging member, and a seal member is provided for sealing the inside and outside of the transmission case. The means is characterized in that the other end of the manual shaft disposed outside the transmission case is supported by a part of the transmission case at a position outside the case via a synthetic resin bushing.

Further, in the manual shaft device for a transmission according to claim 2, the manual shaft extends vertically at an axle (p11 position) of the transmission case,
Further, the lower end portion is inserted into the lower part of the transmission case to drive the member on the selection mechanism side, and the upper end portion is connected to the connecting member on the control lever side via a connecting lever that rotates on a horizontal plane. This is a means to do so.

Further, in the manual shaft device for a transmission according to claim 3, the lower end of the manual shaft includes a switching lever extending straight in a direction perpendicular to the axis of the manual shaft, and a hole bored in the switching lever. The means is characterized in that the stepped small-diameter portion is fitted and fixed into the hole, and also has an engagement pin connected to a manual valve.

(Function) In the manual shaft device for a transmission of the present invention, after the control shaft is assembled to the case, it is locked by a locking member to prevent it from coming off. is rotated in conjunction with the operation of the control lever, thereby switching the selection mechanism.

When the manual shaft rotates in this way, the part of the manual shaft that is inserted into the case at one end is supported in metal contact with the case, and this metal contact part is supported by lubricating oil in the case. Lubricated by
Rust prevention and wear resistance are ensured. Furthermore, the seal member provided in this portion prevents lubricating oil from leaking.

On the other hand, the other end of the manual shaft is supported at a position outside the case via a synthetic resin bushing, which ensures rust prevention and abrasion resistance, as well as a matte finish. Peeling of the layers is prevented.

In addition to the above effect, in the device according to the second aspect, since the manual shaft extends vertically at the axle side position of the case, the distance between the manual shaft and the control lever can be shortened.

Furthermore, in the device according to the third aspect, since the switching lever has a straight shape without bending, errors due to machining are less likely to occur.

In addition, since the engagement pin provided between the switching lever and the manual valve is fixed to the switching lever by fitting, errors due to this fixing work are less likely to occur.

(Example) Embodiments of the present invention will be described below based on the drawings.

In addition, in describing this embodiment, the engine is horizontally mounted F.
Let's take the automatic transmission for F cars as an example.

First, the configuration will be explained.

FIG. 1 is a sectional view (according to FIG. 2 1-1) showing a manual shaft device A for a transmission according to an embodiment of the present invention, in which 1 indicates a (transmission) case, and the engine shaft A select mechanism (not shown) is provided between the axle shaft 2 and the axle shaft 3, and a control shaft 4 is housed therein for controlling the switching operation of the select mechanism.

Note that 4a is a manual valve that is one of the valve components in the control valve unit 4. Furthermore, lubricating oil is contained in the case 1 in order to prevent wear and the like of the select mechanism.

The manual valve 4a is configured to be slid by a manual shaft 5, and to switch the oil passage through which hydraulic pressure is transmitted within the control valve unit 4 based on this sliding movement.

That is, the manual shaft 5 is rotatably supported by the case 1, and the switching lever 5a at the lower end is connected to the manual valve 4a, and the connecting lever 5b at the upper end is connected to the control lever 6 provided in the vehicle interior. They are connected via a control wire 61.

This structure will be explained in detail below.

As shown in FIG. 2, which is a plan view of the embodiment device, the manual shaft 5 is provided to extend vertically at the end position of the three axle shafts of the case 1. Furthermore, the second
In the figure, 8 is the engine, and FW is the front wheel.

As shown in FIG. 1, the lower end of the manual shaft 5 is inserted into the case 1 through a mounting hole 1a formed in the case 1, and is in metal contact with the mounting hole 1a. It is rotatably supported. In addition, an O-ring (sealing member) for preventing leakage of lubricating oil inside the case 1 is installed in the part corresponding to the mounting hole 1a of the manual shaft 5.
5c is provided.

Further, a bolt hole 1b is bored perpendicularly to the mounting hole 1a, and a position adjustment port 9 is provided. As shown in FIG. 3, this position adjustment port 9 has a tip 9a.
is formed into a spherical shape, and this tip 9a is brought into contact with the engagement groove 5d formed in the manual shaft 5 in a locked state, thereby preventing the manual shaft 5 from coming off and preventing it from coming off in the axial and radial directions. Position control is established.

Further, as shown in FIG. 1, the switching lever 5a is provided at right angles to the axial direction of the manual shaft 5, through which the lower end of the manual shaft 5 is inserted, and is fastened with a port 5e. This switching lever 5a is
It is formed into a straight flat plate shape with no bends anywhere, and a detent spring 5f is attached to one end to engage with the unevenness (not shown) of the check plate 10 to regulate the position of each position. Further, at the other end, an engaging pin 5h fits the stepped small diameter portion 5'' into a hole 59 formed in this portion.

It is further tightened and fixed. In addition, this engagement pin 5h
is connected to the manual valve 4a to switch the manual valve 4a.

On the other hand, an intermediate portion and an upper end portion of the manual shaft 5 are arranged outside the case 1. The upper end portion thereof is rotatably supported by a flange portion IC formed on the outside of the case 1. That is, the flange portion 1
A support hole 1d is bored in C, and this support hole 1
d through a bushing 11 made of synthetic resin such as nylon.

Next, the operation of the embodiment will be explained.

(a) Manual during installation The procedure for installing the shaft 5 is explained below.
First, the fish 11 is driven into the support hole 1d of the flange portion 1C of the case 1. On the other hand, O
The ring 5c is assembled, and the manual shaft 5 is inserted into the support hole 1d from above and assembled. After the lower end of the manual shaft 5 is inserted into the case 1, it is positioned using the position adjustment port 9.

After completing the installation of the manual shaft 5 in this way,
The connecting lever 5b is attached to the upper end, the switching lever 5a is attached to the lower end, the connecting lever 5b is connected to the control wire 61, and the engaging pin 5h of the switching lever 5a is connected to the manual valve 4a. Set the tent spring 5f against the check plate 10.

(b) During operation When the control lever 6 is operated, the operating force is input to the connection lever 5b via the control wire 61, and the manual shaft 5 is rotated. This rotation causes the switching lever 5a to rotate and the manual valve 4a to slide, thereby switching the oil path in the control unit 4 and changing the gear stage of the select mechanism.

Furthermore, there are many rotating bodies inside the case 1, and as these bodies rotate, droplets of lubricating oil are scattered, and this lubricating oil enters between the mounting hole 1a of the case 1 and the manual shaft 5. Therefore, the lubricity of this part is maintained well, rust prevention and wear resistance are ensured, and peeling of the plating layer is also prevented. Furthermore, since an O-ring 5c is provided at this location, lubricating oil will not leak from here and water will also be prevented from entering from the outside.

On the other hand, since a bushing 11 made of synthetic resin is interposed between the upper part of the manual shaft 5 and the case 1 and there is no metal contact, rust, wear, and peeling of the plating layer are prevented.

As explained above, in the manual shaft device A for a transmission according to the embodiment, the following effects can be obtained.

■ A new structure in which the manual shaft 5 is supported outside the case 1 improves the degree of freedom in layout.

Moreover, although the structure was such that no lubricating oil was applied to the support part as an external support, synthetic resin bushings 11
The provision of the O-ring 5c prevents the occurrence of chains, wear, and peeling of plating, and the setting of the O-ring 5c prevents leakage of lubricating oil and intrusion of water from the outside.

■ The manual shaft 5 is placed at the end of the case 1 on the axle shaft 3 side, and the configuration does not require a link mechanism or the like to be interposed between the control wire 61 and the connecting lever 5b, reducing the number of parts and reducing the number of joints. This reduces transmission loss and play, resulting in improved operating efficiency and operational feel.

■ Since the switching lever 5a has a straight shape with no bends in the middle, it is difficult for machining errors to occur, and this eliminates vibration in the mounting position of the retaining pin 5h, improving positional accuracy (parallelism of 1 position degree). The manual valve 4a can be operated accurately.

■ Since the engaging pin 5h is fixed to the switching lever 5a by fitting and caulking, the perpendicularity to the switching lever 5a does not go out of alignment unlike when fixed by welding, and the position accuracy (squareness position degree) is improved. ) or improve.

Although the embodiment has been described above based on the drawings, the specific configuration is not limited to this embodiment, and even if there is a design change within the scope of the gist of the present invention, it is included in the present invention. .

For example, in the embodiment, the present invention is applied to a front-wheel drive vehicle with a side-mounted engine, but it can also be applied to a front-wheel drive vehicle or a four-wheel drive vehicle. In the case of an FR shaft, it is preferable that the manual shaft is laid down in a near-horizontal state, and that the outer end of the vehicle is supported by the output shaft side of the case.

Further, in the embodiment, an example in which the present invention is applied to an automatic transmission has been shown, but the apparatus according to claims 1 and 2 of the present invention can be applied to a manual transmission. In this case, for example, although there are two shafts, one for selection and one for shift, it is preferable to apply the shaft for selection.

(Effects of the Invention) As explained above, the manual shaft device for a transmission according to the present invention provides the following effects.

That is, by adopting a new structure in which only one end of the manual shaft is inserted into the case and the other end is supported outside the case, the degree of freedom in layout is increased.

In addition, by adopting a structure in which the other end of the manual shaft is supported outside the case, this part is not lubricated by the lubricating oil inside the case, but since a synthetic resin bushing is provided, rust prevention performance and In addition to ensuring wear resistance,
Peeling of the plating layer is prevented. Furthermore, since a sealing member is provided on the support portion on the case side, leakage of lubricating oil inside the case is prevented.

In addition to the above effects, in the device according to claim 2, since the distance between the manual shaft and the control lever can be shortened, the number of parts interposed between them can be reduced, and the length of the parts can be shortened. As a result, it is possible to achieve the effects of reducing costs, improving accuracy, improving reliability, and improving operational feeling.

Furthermore, in the device according to claim 3, in addition to the above-mentioned effects, since the switching lever has a straight shape without bending, it is possible to obtain an effect that the positional accuracy is less likely to be distorted due to machining. Since the engaging pin provided between the switching lever and the manual valve is fixed to the switching lever by fitting, it is possible to obtain the effect that errors in the mounting angle due to this fixing work are unlikely to occur.

[Brief explanation of the drawing]

Fig. 1 is a sectional view (taken along the line 1-1 in Fig. 2) showing a manual shaft device for a transmission according to an embodiment of the present invention, Fig. 2 is a plan view showing the embodiment device, and Fig. 3 is a diagram showing the embodiment device. FIGS. 4 and 5 are enlarged views showing the main parts of the conventional technology. 1... Transmission case 3... Axle shaft 4 days... Manual valve 5... Manual shaft 5a... Switching lever 5b... Connection lever 5c... O-ring (sealing member) 59...・Hole 5h...Engaging pin 5J...Stepped small diameter part 6...Control lever 9...Position adjustment bolt (locking member) 11...Synthetic resin push...Control wire ( Connection member) Patent applicant Japan Automatic Transmission Co., Ltd. Figure 4 Figure 5 ■

Claims (1)

[Scope of Claims] 1) In a transmission in which a manual shaft is provided in a transmission case to operate a select mechanism in conjunction with the operation of a control lever provided in a vehicle interior, the manual shaft is provided in the transmission case. One end to be inserted is rotatably supported in metal contact with the transmission case, and is prevented from coming off by a locking member. A sealing member is provided to seal the inside and outside of the transmission case. 1. A manual shaft device for a transmission, wherein the other end side disposed outside the transmission case is supported by a part of the transmission case at a position outside the case via a synthetic resin bush. 2) The manual shaft extends vertically at a position on the axle side of the transmission case, has a lower end inserted into the lower part of the transmission case to drive a member on the selection mechanism side, and has an upper end rotated on a horizontal plane. 2. The manual shaft device for a transmission according to claim 1, wherein the manual shaft device is connected to a connecting member on the control lever side via a moving connecting lever. 3) The lower end of the manual shaft has a switching lever that extends straight in a direction perpendicular to the axis of the manual shaft, and a stepped small diameter portion that is fitted and fixed into a hole drilled in the switching lever. 3. The manual shaft device for a transmission according to claim 1, further comprising an engagement pin connected to a manual valve.