JP3317028B2 - Ball joint structure of control linkage mechanism for manual transmission - Google Patents

Abstract

PURPOSE:To absorb any vibration by forming a spherical part on the lower part of a shift lever, arranging a sheet member and an insulator in which the sheet member is inserted on its circumference, providing two ring grooves on the inner peripheral surface of the insulator and mounting lip parts between the ring grooves and bringing only the lip part in contact with the sheet member. CONSTITUTION:A spherical part 9 on the lower part of a shift lever is arranged above a floor 4 in a car. Ring shape sheet members 10 divided in two are arranged so as to cover the spherical part 9. Two narrow ring grooves 21a, 21b are formed on the upper part of the inner peripheral surface of an insulator 20 and a first lip part 22 and a second lip part 23 set by at a free length H1 are formed between the ring grooves 21a, 21b and third and fourth lip parts 25, 26 set to a free length H2 are formed adjacently. A turning spherical part 9 is supported elastically on the insulator 20 by the lip parts 22, 23, 25, 26 at a low spring constant through the sheet members 10. Therefore, the vibration in a vehicular longitudinal direction is absorbed perfectly by the insulator 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball joint structure of a control linkage mechanism for a manual transmission suitable for a front engine rear drive vehicle (FF vehicle), for example.

[0002]

2. Description of the Related Art FIGS. 3 to 5 show a control linkage mechanism for a manual transmission mounted on an FF vehicle. In FF vehicles,
An engine is mounted on an engine mount mounted in an engine room in front of the vehicle. Symbol 1 in FIG.
Is a rear engine mount that supports the rear side of the vehicle body of the engine. The control linkage mechanism 2 is configured such that a part of the components is connected to the rear engine mount 1 and extends rearward of the vehicle body. It is mounted so as to protrude from the floor 4 in the vehicle.

In the control linkage mechanism 2, one end 5a is connected to a rear engine mount via a bush 8a, a collar 8b, and a plate 8c by a mounting bolt 8d, and the other end 5b is bolted to the lower surface of the vehicle interior floor 4. A support rod 5, a ball joint 6 that supports the shift lever 3 on the vehicle interior floor 4 so as to be swingable, and one end 7a engaged with a striking rod (not shown) of the transmission, and the other end 7b is provided with a control rod 7 connected at the lower end of the ball joint 6.

[0004] As shown in FIG. 4, the ball joint 6 is formed integrally with the lower part of the shift lever 3 and elastically supports the rotation of the spherical part 9 via a seat member 10. Insulator 11 and insulator 1
1 and a socket portion 12 mounted on the outer periphery of the vehicle 1 and fixed on the floor 4 inside the vehicle. In addition, the control rod 7 and the mounting bolt 13
a, an O-ring 13b, and a connecting portion 14 that is connected using a nut 13c.

The specific configuration of the ball joint 6 is a support rod 5 bolted to the lower surface of the vehicle interior floor 4.
A mounting hole 5c is formed in the other end 5b of the vehicle. The connecting portion 14 is inserted through the mounting hole 5c, the spherical portion 9 is disposed above the vehicle interior floor 4, and the shift lever 3 is disposed. Is connected to the other end 7b of the control rod 7. The support rod 5 and the control rod 7
A return spring 15 is disposed between the other end portions 5a and 5b of the return spring.

[0006] As shown in FIG. 5, a ring-shaped sheet member 10 divided into two parts having the same inner peripheral surface as the spherical portion 9 is disposed so as to cover the spherical portion 9. here,
A concave portion 10a is provided on the outer periphery of the sheet member 10, whereby ring-shaped protrusions 10b, 10
c is formed. The insulator 11 has a cylindrical shape in which ring-shaped concave grooves 11a and 11b are formed at upper and lower positions on an inner peripheral surface. Then, the insulator 11 inserts the protrusions 10b, 10c into the concave grooves 11a, 11b.
And is arranged so as to cover the outer periphery of the sheet member 11 in a state of being in surface contact with the outer periphery of the sheet member 11. And the structure of the ball joint part 6 is obtained by the socket part 12 covering the outer periphery of the insulator 11 and being bolted on the vehicle interior floor 4.

In the control linkage mechanism 2 having the above structure, when the shift lever 3 is operated in the front-rear direction or the left-right direction, the spherical part 9 which rotates with the movement of the shift lever 3 is attached to the insulator 11 in the socket part 12 by the seat member. The transmission is shifted or selected to a predetermined shift position via the striking rod by swinging the control rod 7 in the front-rear direction or the left-right direction via the control rod 7.

[0008]

By the way, in the above-mentioned ball joint portion 6, a spherical portion 9, which is a component,
Sheet member 10, insulator 11, and socket portion 1
2 must be manufactured with high precision, the required shift lever 3
Greatly affects the vibration transmission performance. That is, the vibration in the vehicle front-rear direction transmitted from the engine to the support rod 5 via the rear engine mount 1 is:
The spring constant of the insulator 11 disposed in the socket portion 12 is absorbed by setting the spring constant to a low value. However, a slight change in the dimensions of the component parts increases the spring constant of the insulator 11 in the front-rear direction. Therefore, the vibration of the engine is not absorbed and the vibration is transmitted to the shift lever 3.

FIG. 6 shows the elastic characteristics of the insulator in various patterns due to slight changes in the dimensions of the components. The horizontal axis indicates the relative displacement X between the sphere and the socket, that is, the front and rear of the insulator. The vertical axis represents the vibration transmitting force F to the spherical body, that is, the load supported by the insulator on the spherical body in the vehicle longitudinal direction. The range indicated by the symbol C on the horizontal axis is the relative displacement range of the spherical portion 9 and the socket portion 12 due to the operation of the shift lever 3, and within this range C, the spring constant of the insulator 11 is set low. Must be elastically supported to absorb engine vibration.

The characteristic of the insulator indicated by the dashed line is that the ball joint 6 is in a state where the inner peripheral surface of the seat portion is in surface contact without contacting the spherical body portion (no clearance). In this case, an insulator 11 that can obtain a linear characteristic with a low spring constant is used. In addition, the characteristic of the insulator indicated by the solid line is that the maximum clearance A where the spherical portion 9 and the seat member 10 do not interfere with each other is determined by the ball joint 6 provided between the spherical portion 9 and the inner peripheral surface of the seat portion 10. is there.

The characteristics of the insulator indicated by the broken line are that the ball joint portion provided with a clearance B larger than the relative displacement range C between the spherical portion 9 and the socket portion 12 is provided between the spherical portion and the inner peripheral surface of the seat portion. 6. further,
The characteristic of the insulator indicated by the two-dot chain line is the ball joint portion 6 in which the insulator 11 is provided with the preload F ₀ applied.

Among the characteristics of these insulators 11,
Ball joint 6 having insulator characteristics
In this case, chattering noise may be generated due to interference between the spherical portion 9 and the seat portion 10. In addition, in the ball joint portion having the characteristics of the insulator, the symbol 1
8, the spring constant of the insulator 11 is increased, so that the vibration of the engine cannot be absorbed and the shift lever 3
Vibration may be transmitted to the motor.

Therefore, in order to improve the vibration transmission performance of the shift lever 3 and to provide a ball joint 6 that does not generate chattering noise, a linear characteristic with a low spring constant is obtained, and an insulator characteristic of the characteristic is obtained. It is desirable to manufacture the spherical part 9, the sheet member 10, the insulator 11, and the socket part 12, which are the component parts, with high precision dimensions, but there is a problem in terms of increasing the manufacturing cost of these component parts.

The present invention has been made in view of the above circumstances, and a control linkage mechanism for a manual transmission capable of ensuring the vibration transmission performance of a shift lever and reducing the manufacturing cost of components. An object of the present invention is to provide a ball joint structure.

[0015]

According to the first aspect of the present invention,
Some of the rods extend inside the vehicle and connected to the engine side mount member, definitive shift lever to the manual transmission for the control linkage mechanism formed by protruding vehicle floor, a spherical portion formed integrally with the lower portion of the shift lever A substantially cylindrical sheet member which is divided in the circumferential direction and has the same inner peripheral surface around the spherical portion, and the spherical member is rotated by inserting the sheet member. In a ball joint structure comprising a cylindrical insulator that elastically supports and a socket portion mounted on the outer periphery of the insulator and fixed on the vehicle interior floor, at the upper and lower portions of the inner peripheral surface of the insulator , Mutual
Position between two narrow ring grooves provided in the circumferential direction
Two lip portions which are elastically deformable are formed, and a predetermined free length is provided on the lip portion so that only these lip portions are bent and come into contact with the outer peripheral surface of the sheet member.
Constant, and a ball joint structure of a manual transmission for the control linkage mechanism characterized by comprising interpolated the sheet member to the insulators.

[0016]

[0017]

According to the first aspect of the present invention, the insulator for elastically supporting the spherical portion which is rotated by the swing of the shift lever is provided on the upper and lower inner peripheral surfaces thereof in the circumferential direction.
Elastic deformation located between the two narrow ring grooves
Two lip parts that can be formed are formed.
Contacting the outer peripheral surface of the sheet member while bending only
As described above, the lip portion has a predetermined free length and the sheet member is inserted therein, so that the insulator has a low spring constant elastic characteristic. Thereby, the vibration in the vehicle longitudinal direction transmitted from the engine-side mount member is reliably absorbed by the insulator, and the vibration transmission performance of the shift lever is ensured. As a result, the vibration transmission performance of the shift lever can be obtained without manufacturing the spherical part, the seat member, and the socket part with unnecessarily high dimensional accuracy as in the conventional structure, so that the manufacturing costs of these components are reduced. Can be reduced.

Further, while only the lip portion bends,
Each lip has a predetermined self-adhesion so that it contacts the outer peripheral surface of the
Since the free length is set, the clearance between the sheet member and the spherical portion can be easily set. Therefore, the seat member and the spherical portion do not interfere with each other, and it is possible to set an optimal clearance that does not generate unpleasant noise such as chattering noise.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a control linkage mechanism for a manual transmission according to the present invention will be described below with reference to the drawings. The same components as those shown in FIGS. 3 to 6 are denoted by the same reference numerals, and description thereof will be omitted. Insulator 20 used in this embodiment
As shown in FIG. 1, two narrow ring grooves 21a and 21b which are parallel to each other in the circumferential direction are formed in the upper part of the inner peripheral surface, and a predetermined free space is formed between the ring grooves 21a and 21b. the first lip portion 22 that is set to a length H ₁ is formed. Further, a second lip portion 23 having the same shape as the first lip portion 22 is also formed at a lower portion of the inner peripheral surface.

Further, a single wide ring groove 24 is formed on the inner peripheral surface between the first and second lip portions 22 and 23, whereby the first and second lip portions 22 and 23 are formed. the third lip 25 and the fourth lip 26 adjacent to which is set to a predetermined free length H ₂ is formed. In the insulator 20 configured as described above, the projection 10b abuts on the first lip 22, the projection 10c abuts on the second lip portion 23, and the peripheral surface in the recess 10a and the third and fourth lip portions 25,
26 is disposed on the outer periphery of the sheet member 10 in a contact state. In addition, since the socket portion 12 is provided so as to cover the outer periphery of the insulator 20, the first and second lip portions 22 and 23 in contact with the protrusions 10b and 10c bend,
The third and fourth lip portions 25 and 26 that are in contact with the sheet member 10 in the concave portion 10a are also disposed in a bent state.

Here, the above-mentioned first and second lip portions 2
2, 23 free length H ₁ , third and fourth lip portions 25, 2
Free length of H ₂ 6, when these lip presses the sheet member 10 while bending the sheet member and the spherical described between the inner peripheral surface and the spherical portion 9 of the seat member 10 is in the clearance A (FIG. 6 (Clearance where the parts do not interfere)).

According to the ball joint having the above structure,
By operating the shift lever 3, the rotating spherical portion 9 is elastically supported by the insulator 20 via the sheet member 10, but the sheet member 10 has a low lip structure (first to fourth lip portions) having a low spring constant. 22, 23, 25, and 26), and as shown by the characteristics indicated by the solid line in FIG.
In the relative displacement range C between the socket and the socket portion 12, it is possible to obtain an insulator characteristic in which a linear characteristic with a low spring constant is sufficiently ensured. As a result, the vibration in the vehicle front-rear direction transmitted from the engine is reduced by the insulator 20.
Therefore, the vibration transmission performance of the shift lever 3 can be ensured.

Further, the free length H ₁ of the first and second lip portions 22 and 23, the free length of H ₂ third and fourth lips 25 and 26, the inner circumferential surface of the seat member 10 and the spherical portion 9 Is set to be equal to or less than the clearance A, so that the sheet member 10 and the spherical portion 9 do not interfere with each other and no chattering noise is generated. In addition, the first to fourth lip portions 22, 23, 25, 2
Even if the insulator characteristic changes to the characteristic indicated by the broken line in FIG. 2 due to the flexure of 6, the insulator characteristic of the present embodiment sufficiently secures the linear characteristic with a low spring constant. It does not affect the transmission performance.

Therefore, in this embodiment, the vibration transmission performance of the shift lever 3 can be ensured and the chatter can be secured without manufacturing the spherical part 9, the seat member 10 and the socket part 12 with dimensional accuracy higher than necessary. Since no unpleasant sound such as a sound is generated, the manufacturing cost of the components constituting the ball joint can be reduced.

[0025]

As described above, according to the first aspect of the present invention, the insulator for elastically supporting the spherical portion which is rotated by the swing of the shift lever is provided at the upper portion of the inner peripheral surface and at the upper portion of the insulator.
The lower part is sandwiched between two narrow ring grooves provided circumferentially with each other.
Forming two elastically deformable lip parts located rarely
The sheet is bent while only these lips are bent.
The lip portion has a predetermined freedom so that it contacts the outer peripheral surface of the member.
Since the length is set and the sheet member is inserted, the insulator has an elastic characteristic with a low spring constant. Thereby, the vibration in the vehicle longitudinal direction transmitted from the engine-side mount member is reliably absorbed by the insulator, and the vibration transmission performance of the shift lever is ensured. As a result, the vibration transmission performance of the shift lever can be obtained without manufacturing the spherical part, the seat member, and the socket part with unnecessarily high dimensional accuracy as in the conventional structure.
Therefore, the manufacturing cost of the component parts can be reduced.

Further, according to the first aspect of the present invention, the lip portion
The sheet is bent so that it contacts the outer peripheral surface of the sheet member.
Since a predetermined free length is set for each lip portion, the clearance between the sheet member and the spherical portion can be easily set. Therefore, it is possible to set an optimal clearance in which the sheet member does not interfere with the spherical portion and no unpleasant noise such as chattering noise is generated.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing a ball joint structure according to the present invention.

FIG. 2 is a diagram showing elastic characteristics of the insulator according to the present invention.

FIG. 3 is a view showing a control linkage mechanism for a manual transmission according to the present invention.

FIG. 4 is an exploded perspective view of a control linkage mechanism.

FIG. 5 is a sectional view showing a conventional ball joint structure.

FIG. 6 is a diagram showing elastic characteristics of a conventional insulator.

[Explanation of symbols]

1 engine side mount member 2 control linkage mechanism 3 shift lever 4 vehicle floor 9 bulb 10 seat member 12 socket 20 insulator 21a, 21b-ring groove 22, 23, 25, 26 lip H _1, H ₂ free length of the lip

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16C 11/04-11/08 B60K 20/00-20/08

Claims (1)

(57) [Claims] 1. A portion of the rod extends inside the vehicle and connected to the engine side mount member, definitive shift lever to the manual transmission for the control linkage mechanism formed by protruding vehicle floor, integral with the lower portion of the shift lever The formed spherical portion, a substantially cylindrical sheet member having a shape divided in the circumferential direction and disposed around the spherical portion and having the same inner peripheral surface, and In a ball joint structure including a cylindrical insulator that elastically supports rotation of a spherical portion and a socket portion mounted on an outer periphery of the insulator and fixed on a vehicle interior floor, an inner peripheral surface of the insulator is provided . At the top and bottom, around each other
Elasticity located between two narrow ring grooves provided in opposite directions
Two deformable lip portions are formed, and a predetermined free length is set on the lip portion such that only these lip portions abut on the outer peripheral surface of the sheet member while bending. A ball joint structure of a control linkage mechanism for a manual transmission, wherein the seat member is inserted into an insulator.