JP2003120810A - Gear shift device for manual transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the unbalance of the operating force of a shift lever to improve the operation feeling in a manual transmission provided with the shift lever mounted in a state of being offset or inclined to a vehicle rear side. SOLUTION: An angle θ1 between a front side V-shaped inclined face MnF orthogonal to an shaft center of a shift rod 6 in a central groove Mn among three detent grooves formed on the shift rod 6 and its vertical face is determined to be larger than an angle θ2 between a rear side V-shaped inclined face MnR orthogonal to the shaft center of the shift rod 6 in the groove Mn and its vertical face, and an angle θ3 between the rear side V-shaped inclined face M1R orthogonal to the shaft center of the shift rod in the front groove M1 and its vertical face is determined to be smaller than an angle θ4 of the front side V-shaped inclined face M2F orthogonal to the shaft center of the shift rod 6 in the rear groove M2 and its vertical face.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for improving shift operability in a manual transmission in which a shift lever is arranged on the rear side of a vehicle in an offset or inclined manner.

[0002]

2. Description of the Related Art As a technique relating to a shift operation in a manual transmission, as shown in FIG. 5, a check spring is provided in a V-shaped check groove 51 formed in a shift rod 50 which is a component of the manual transmission. The check ball 53 is pressed via 52, and the check groove 51 always has a spring plate 54 having a bending point that acts to increase the starting load of the check ball 53, and the bending point of this spring plate 54 is checked. By providing a sub-check mechanism including a spring 55 that urges the spring toward the spring side, the movement of the check ball 53 is restricted by the spring plate 54 to prevent the gear from slipping out when the gear shift operation is not performed. , The spring 55 of the sub-check mechanism acts so as to weaken the pressing force of the check spring 52, Can pull out the gear in operation force, it is intended to improve the operability. (Refer to Utility Model Registration No. 2592548)

By the way, a vehicle is considered to have different power performance, riding comfort, or interior and exterior texture depending on the vehicle type such as sports type, family type, or off-road type. The shift lever also has a wide variety of shapes from the viewpoint of operability and shift feeling. Among them, the shift lever extends from the root to the rear of the vehicle at a relatively small angle with the vehicle floor surface, Extends upward at a relatively large angle with the vehicle floor surface, that is, the shift lever has a shape offset from the root of the vehicle rearward side or a shape inclined at the vehicle rearward side. Some have.

Generally, factors affecting the operability of the shift lever include the weight of the shift lever, sliding resistance,
Although there are mounting angles, mass of link mechanism or shift knob, etc., in the case of a shift lever having a shape that is offset or inclined on the rear side of the vehicle as described above, the influence of the weight of the shift lever is the greatest and driving For example, when a person operates the shift lever from the neutral position to the gear position of the first speed and when the shift lever operates from the neutral position to the gear position of the second speed, a large difference occurs in the operation force. This makes the driver feel uncomfortable, and the technology disclosed in Utility Model Registration No. 2592548, whose main purpose is to prevent gear disengagement, cannot be solved.

Here, the influence of the weight of the shift lever on the operating force will be described with reference to FIG. 6, which is a model diagram when the shift lever is considered as a certain mass point model. The shift lever L that is operated back and forth around the fulcrum S has its mass point W, and Wa and its component Wb act vertically on this mass point W by the action of gravity. In this state, when the shift lever L is operated in the forward direction (first speed, third speed, or fifth speed), the component force load Wb of gravity acts in the direction of obstructing the shift, so that the shift operation load is large. On the contrary, in the reverse direction (2nd speed, 4th speed)
When the shift lever L is operated in the speed or Rev direction), the component force load Wb of gravity acts in a direction that assists the shift, so that the shift operation load becomes smaller, and the operation force of the shift lever in the front-back direction varies. Becomes

When the shift lever is upright, such a difference in shift operating force does not occur because only the vertical Wa is present and there is no force Wb corresponding to it, but the shift lever is offset or tilted toward the rear side of the vehicle. In the case of a shift lever that is arranged as a unit, the distance between the fulcrum S and the mass W increases and
Since it is inclined rearward, the difference in the magnitude of the shift operation load becomes noticeable.

[0007]

SUMMARY OF THE INVENTION In view of the above points, the present invention is directed to a manual transmission having a shift lever which is arranged on the rear side of the vehicle with an offset or an inclination, and an unbalanced operation force of the shift lever. It is an object to suppress the operation and improve the operation feeling.

[0008]

In a transmission of a manual transmission according to the first aspect of the present invention, a shift shift lever of the manual transmission is arranged on the rear side of the vehicle in an offset or inclined manner.
A transmission device for a manual transmission having a gear shift rod extending from below the gear shift lever toward a friction clutch plate, wherein the gear shift rod includes a ball pressed from above by an urging member. A detent groove having a substantially V shape is provided so as to fit in the position, and an inclination angle of the detent groove with respect to a vertical direction of a V surface orthogonal to the shift rod axis is shifted due to the disposition of the shift shift lever. The tilt angle on the shift side where the operation force becomes heavy is made larger than the tilt angle on the shift side where the shift operation force becomes light.

According to the first aspect of the present invention, the inclination angle of the substantially V-shaped detent groove provided in the shift shift rod with respect to the vertical direction of the V-shaped surface orthogonal to the axis of the shift rod is:
Since the shift-side tilt angle at which the shift operation force is increased due to the disposition of the shift shift lever is larger than the shift-side tilt angle at which the shift operation force is light, the shift lever is offset toward the vehicle rear side. Alternatively, in a transmission of a manual transmission that is arranged to be inclined, a ball pressed by a biasing member has a shift operation force that is heavy on a sloped surface having a shift-side inclination angle. It becomes possible to easily move with a force substantially equal to that of the inclined surface having the inclination angle on the shift side.

In the transmission of the manual transmission according to the second aspect of the present invention, in the first aspect, the inclination angle is shifted from the neutral position of the shift shift lever in the shift pattern to the front of the vehicle. Inclination angle θ1 on the shift side in the detent groove at neutral
Is larger than the inclination angle θ2 on the opposite side.

According to the second aspect of the present invention, in the transmission of the manual transmission in which the shift lever is arranged on the rear side of the vehicle in an offset or inclined manner, the ball pressed by the biasing member is , When shifting from the neutral position of the shift shift lever in the shift pattern to the front of the vehicle, the inclined surface having the inclination angle θ1 on the shift side in the detent groove at the time of neutral is provided on the opposite side, that is, from the neutral position to the rear of the vehicle. When shifting to
The neutral surface can be easily moved by a force substantially equal to that of the inclined surface having the inclination angle θ2 on the shift side in the detent groove.

In the transmission of the manual transmission according to the third aspect of the present invention, in the first aspect, the inclination angle is
When shifting from the shift position located in front of the neutral position of the shift shift lever in the shift pattern to the neutral position side, the inclination angle θ3 on the shift side in the detent groove is set to be rearward of the neutral position of the shift shift lever. It is smaller than the inclination angle θ4 on the shift side of the detent groove when shifting from the shift position located at to the neutral position side.

According to the third aspect of the present invention, in the transmission of the manual transmission in which the shift lever is arranged on the rear side of the vehicle in an offset or inclined manner, the ball pressed by the biasing member is , When the shift position is located in front of the neutral position of the shift shift lever in the shift pattern and shifts to the neutral position side, an inclined surface having a shift side inclination angle θ3 in the detent groove is formed on the detent groove. When shifting from the shift position located behind the neutral position to the neutral position side, the detent groove can be easily moved with a force substantially equal to that of the inclined surface having the inclination angle θ4 on the shift side. .

In the transmission of the manual transmission according to the fourth structure of the present invention, in the first structure, the detent grooves are formed at three positions on the speed shift rod from the vehicle front side along the front-rear direction. Among the tilt angles of the detent groove located in the center, the magnitude relationship between the tilt angle θ1 located in front of the vehicle and the tilt angle θ2 located behind the vehicle is θ1> θ2. Of the inclination angles of the front detent groove, the inclination angle θ3 on the side closer to the central detent groove, and the inclination angle θ3 on the side of the inclination angle of the detent groove positioned on the vehicle rear side closer to the central detent groove. The magnitude relationship with the tilt angle θ4 is θ3 <θ
It is supposed to be 4.

According to the fourth aspect of the present invention, in the transmission of the manual transmission in which the shift lever is arranged on the vehicle rear side in an offset or inclined manner, the ball pressed by the biasing member is Of the three detent grooves formed in order in the front-rear direction from the vehicle front side on the shift shift rod, an inclined surface having the inclination angle θ1 located in the vehicle front of the detent groove located in the center is formed. The center detent of the detent groove located in the front of the vehicle can be easily moved by a force substantially equal to that of the inclined surface having the inclination angle θ2 located in the rear of the vehicle of the detent groove also located in the center. The inclined surface having the inclination angle θ3 on the side closer to the groove is provided with the inclination angle θ4 on the side closer to the central detent groove of the detent groove located on the rear side of the vehicle.
It becomes possible to easily move with a force substantially equal to that of the inclined surface having.

[0016]

As described above, according to the present invention, in the transmission of the manual transmission in which the shift lever is arranged on the rear side of the vehicle in an offset or inclined manner, the imbalance of the operating force of the shift lever is suppressed, Operability can be improved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, as shown in FIG. 1, which is a schematic view of a transmission of a manual transmission according to the present invention, the present transmission has a clutch housing H surrounding a friction clutch plate C on the front side of the vehicle. Is connected to the lower part 9 of the shift lever 2 operated by the driver. For example, when the shift lever 2 is operated to the front side of the vehicle, the lower part of the shift case is moved via the spherical part 3. A connecting member 5 having an oscillating portion 4 which moves to the vehicle rear side on the opposite side, and a connecting member 5 extending in the direction of the friction clutch plate C so as to move in the front-rear direction in the same manner as the oscillating portion 4 moves back and forth. Shift rod 6
And a gear, a shift fork, and the like (reference numerals and some of the drawings are omitted).

The detent groove provided in the shift rod 6 which is the point of the present invention will be described in detail later, but the shift rod 6 has three detent grooves on the clutch housing side.
Two substantially V-shaped detent grooves are provided so that the ball 8 pressed from above by the spring 7 serving as a biasing member can be accommodated in a predetermined groove portion as the shift rod 6 moves in the front-rear direction. .

The shift lever 2 is, as shown in FIG. 2 showing the shape of the shift lever according to the present invention, the shift lever 2
After extending from the first bending portion B1 of the lower portion 9 of the vehicle rearward to the vehicle floor surface at an angle α, the second bending portion B
2 extends further toward the vehicle rear side with an angle β larger than the angle α, that is, the second bent portion B2 is in a positional relationship offset to the vehicle rear side with the first bent portion B1 near the fulcrum. The lower portion 9 is connected above the spherical portion 4 of the connecting member 5 which is a fulcrum (see FIG. 1) and is rotatable in the vehicle front-rear direction or the vehicle width direction.

Next, the substantially V-shaped detent groove provided in the shift rod 6 described above is indicated by A in FIG.
As shown in FIG. 3 which is an enlarged view of the portion, the groove M1 closest to the friction clutch plate C (on the vehicle front side) is the first speed, the third speed,
Alternatively, when the shift lever is operated to the position of the fifth speed, the central groove Mn is operated to the neutral position of the shift lever, and the groove M2 near the shift lever side (vehicle rear side) is the second speed, When the shift lever 2 is operated to the 4th speed or the reverse position, the ball 8 is set.

This is shown in FIG. 1 and FIG. 4 showing a shift pattern.
More specifically, the shift positions of the first speed, the third speed, and the fifth speed are set to the front side of the vehicle.
For example, when the driver operates the shift lever from the neutral position to any of the shift positions on the front side of the vehicle, the lower side of the swinging portion 4 moves to the opposite vehicle rearward side via the spherical portion 3, so that the swinging is performed. The shift rod 6 via the shift rod connecting member 10 having a groove that engages with the tip of the portion 4.
Also moves to the rear side of the vehicle.

At this time, the ball 8 pressed by the spring 7 from above is substantially V-shaped provided on the shift rod 6.
After going up to the top along the inclined surface MnF on the vehicle front side of the V-shaped groove Mn, it descends along the inclined surface M1R on the vehicle rear side of the groove M1 to a predetermined position indicated by the imaginary line of the groove M1. Fits.

On the contrary, the second speed, the fourth speed, and the R
Since the (reverse) shift position is set to the rear side of the vehicle, when the driver operates the shift lever from the neutral position to any of the shift positions on the rear side of the vehicle, the swinging portion 4 is moved through the spherical portion 3. Since the lower side of the shift rod moves to the opposite vehicle front side, the shift rod 6 via the shift rod connecting member 10 having the groove that engages with the tip of the swinging portion 4.
Also moves to the front side of the vehicle, and the ball 8 is inclined toward the rear side of the vehicle Mn of the substantially V-shaped groove Mn provided in the shift rod 6.
After ascending to the top along R, it descends along the inclined surface M2F on the vehicle front side of the groove M2, and falls within a predetermined position indicated by an imaginary line of the groove M2.

In the present invention, as shown in FIG. 3, the detent grooves M1, Mn, M2 have inclined surfaces having an asymmetric angle with respect to the vertical direction from the center of each groove, and It is characterized that the angles of the inclined surfaces are set so as to form a predetermined relationship.

Specifically, the angle formed by the front V-shaped inclined surface MnF orthogonal to the axis of the shift rod 6 in the groove Mn with the vertical surface thereof, that is, the shift position located forward from the neutral position of the shift pattern. The tilt angle θ1 on the shift side is shifted from the neutral position to the shift position side located behind the vehicle, that is, the angle formed by the rear V-shaped tilt surface MnR orthogonal to the axial center of the shift rod 6 in the groove Mn with the vertical surface thereof. Which is set to be larger than the inclination angle θ2 of the shift side and which is orthogonal to the axis of the shift rod 6 in the groove M1 and an angle formed by the vertical surface of the rear side V-shaped inclined surface M1R, that is, a position in front of the neutral position of the shift pattern The inclination angle θ3 on the side of shifting from the shift position to the neutral position is the front side orthogonal to the axis of the shift rod 6 in the groove M2. Shaped inclined surface M2F is in angle between the vertical plane, i.e. with those smaller than the inclination angle θ4 of the side to be shifted to neutral from the shift position side located beyond the neutral position.

As described above, in the case where the shift lever has a shape offset toward the vehicle rear side, this is the shift position from the neutral position to the front side (first speed, third speed,
Alternatively, the operating force when trying to shift to the 5th speed is the shift position from the neutral position to the rear side (the 2nd speed, the 4th speed).
Since it becomes heavier than the operating force when trying to shift to the speed or reverse), θ1> θ2, in other words, the angle formed by the V-shaped inclined surface MnF and the horizontal plane, and the angle formed by the V-shaped inclined surface MnR and the horizontal plane. It is set to be smaller, and the shift position from the neutral position to the front side (first speed, third speed,
Alternatively, the operating force when shifting to the 5th speed) is lightened so that the operating force is substantially equalized.

Similarly, the operating force when an attempt is made to operate from the shift position (second speed, fourth speed or reverse) located behind the neutral position to the neutral position is the shift position located in front of the neutral position. Since it is heavier than the operating force when trying to operate from the position (first speed, third speed, or fifth speed) to the neutral position,
θ4> θ3, in other words, the angle formed by the V-shaped inclined surface M2F and the horizontal plane is set to be smaller than the angle formed by the V-shaped inclined surface M1R and the horizontal plane, and the shift position (first The operating force when shifting from the 2nd speed, the 4th speed, or the reverse) to the neutral position is lightened so that the operating force is substantially equalized.

As described above, the detent grooves M1, Mn,
In M2, when the inclined surface has an asymmetric angle with respect to the vertical direction from the center of each groove, and the angles are set so as to form the above-described predetermined relationship, the shift lever is set to the vehicle. When the shape is offset to the rear side, or when the shift lever is arranged so as to be inclined toward the vehicle rear side, the shift operation force can be made substantially equal.

[0029]

EXAMPLES Regarding the present invention described above, Table 1 shows the results of actual evaluation and confirmation of the effects. In Table 1, the symbols A to L are symbols indicating the operation direction shown in FIG. 4, and in order to explain this more specifically, the contents of the operation are added as measurement items. In the conventional product of this embodiment, the angles θ1 to θ4 are θ1 = θ2 = 60, respectively.
And θ3 = θ4 = 45 °, the product of the present invention has θ1 to θ4.
The angles of θ1 = 60 °, θ2 = 50 °, θ
3 = 40 °, θ4 = 50 °, that is, θ1> θ2 and θ3 <θ4.

The evaluation method is as follows. After the transmission unit is fixed on the bed so that the mounting angles are the same as the actual vehicle, a measuring instrument that can detect the stroke of the shift lever and the load at the time of shifting operation is mounted on the shift knob. The operation is performed 10 times in the free pass state, and the numerical values in Table 1 are average values.

[0031]

[Table 1]

As is apparent from Table 1, when the product of the present invention is compared with the conventional product, the operation of shifting from the neutral position to the front side of the vehicle is A: 1 speed change, E: 3 speed change, and I. : The operating force for 5th gear is lighter, and the operating force for shifting from the shift position on the rear side of the vehicle to the neutral side is D: 2nd speed extraction, H: 4th speed extraction, and L: Reverse extraction operation force is also lighter. Therefore, it was confirmed that the shift operation force can be made substantially uniform and that the operation feeling is greatly improved.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a transmission of a manual transmission according to the present invention.

FIG. 2 is a view showing the shape of a shift lever according to the present invention.

FIG. 3 is an enlarged view of part A in FIG.

FIG. 4 is a diagram showing a shift pattern.

FIG. 5 is a diagram showing a conventional example.

FIG. 6 is a mass model diagram for explaining the influence of the weight of the shift lever on the operating force.

[Explanation of symbols]

2 ... shift lever 6 ... shift rod 7 ... spring 8 ... ball C ... friction clutch plates M1, Mn, M2 ... detent groove MnF ... front V-shaped inclined surface MnR in groove Mn ... rear V-shaped inclined surface M1R in groove Mn ... The rear V-shaped inclined surface M2F in the groove M1 ... The front V-shaped inclined surface .theta.1 in the groove M2 ... The angle .theta.2 formed by the front V-shaped inclined surface in the groove Mn with the vertical surface ... The rear V-shaped inclined surface in the groove Mn. Angle formed with the vertical surface θ3: Angle formed by the rear V-shaped inclined surface of the groove M1 with the vertical surface θ4: Angle formed by the front V-shaped inclined surface of the groove M2 with the vertical surface

Claims (4)

[Claims] 1. A manual transmission having a shift gear shift lever, wherein the shift gear shift lever is arranged on the vehicle rear side in an offset or inclined manner, and has a gear shift rod extending from below the gear shift lever toward the friction clutch plate. In the transmission, the shift shift rod is provided with a substantially V-shaped detent groove so that a ball pressed from above by an urging member fits in a predetermined position, and the shift rod axial center of the detent groove. The inclination angle of the V-shaped surface orthogonal to the vertical direction with respect to the vertical direction is the inclination angle on the shift side where the shift operation force becomes heavy due to the disposition of the shift shift lever, and the inclination angle on the shift side where the shift operation force becomes light. A transmission that is larger than the manual transmission. 2. The inclination angle is the inclination angle .theta.1 on the shift side of the detent groove at the time of neutral when the gear shift shift lever is shifted from the neutral position to the front of the vehicle in the shift pattern. The transmission of a manual transmission according to claim 1, wherein the transmission is larger than θ2. 3. The tilt angle .theta.3 on the shift side in the detent groove when shifting from the shift position located in front of the neutral position of the shift lever in the shift pattern to the neutral position side.
2. The manual transmission according to claim 1, wherein is smaller than an inclination angle θ4 on the shift side in the detent groove when shifting from the shift position located behind the neutral position of the shift shift lever to the neutral position side. Gearbox. 4. The detent groove is formed at three locations along the front-rear direction from the vehicle front side on the shift shift rod, and is located in front of the vehicle among the inclination angles of the detent groove located in the center. The magnitude relationship between the tilt angle θ1 and the tilt angle θ2 located at the rear of the vehicle is θ1> θ2, and further, of the tilt angles of the detent groove located at the front of the vehicle, the side closer to the central detent groove. 2. The manual according to claim 1, wherein the inclination angle θ3 and the inclination angle θ4 on the side closer to the central detent groove among the inclination angles of the detent groove located behind the vehicle are θ3 <θ4. Transmission gearbox.