WO2002042661A1

WO2002042661A1 - Connecting rod

Info

Publication number: WO2002042661A1
Application number: PCT/JP2000/008264
Authority: WO
Inventors: Masashi Takaoka; Toshihiro Kakimoto
Original assignee: Toyo Tire & Rubber Co., Ltd.
Priority date: 2000-11-22
Filing date: 2000-11-22
Publication date: 2002-05-30
Also published as: JPWO2002042661A1; JP3654593B2

Abstract

A connecting rod for supporting a torque used when an engine is supportedly mounted on a body, wherein a rod main body (1) comprises two sheets of rod plates (11) and (12) connected to both tube bodies (2) and (3) in parallel with each other with the plate faces opposed to each other, a mass member (6) is inserted between the both plates through a rubber elastic body (7), generally longitudinal center parts of the both plates are formed as holding parts (11c) and (12c) having inner parts formed generally in circular shapes, and the mass member (6) is inserted between the both plates through the rubber elastic body by press-fit means so as to position the mass member generally at the center inside the holding parts, whereby the mass member for providing a function as a dynamic damper can be installed easily on the rod main body by suppressing the extension thereof to the outside, tuning can be facilitated, and assembling performance and mountability of the mass member can be improved.

Description

Description Document Connection port (Technical field)

TECHNICAL FIELD The present invention relates to a connection port for supporting a torque for suppressing the movement or vibration of an engine mounted on an automobile or its unit in a rolling direction.

[Background technology]

An engine mounted on a car such as a passenger car is usually configured as a unit including a transmission and the like, incorporated into a vehicle body, and supported by an anti-vibration mount. At this time, in order to suppress the movement or vibration of the engine unit in the roll direction, a part (mainly a lower part) of the unit and the knot is referred to as a torque rod extending in a direction opposite to the vehicle traveling direction. It is connected to the vehicle body by a connecting rod.

As shown in FIG. 10, the connecting rod includes, for example, a rod main body 101 made of a metal pipe material, and two rods connected to both ends of the rod main body 101. It consists of cylinders 102, 103 and anti-vibration pushes 104, 105 mounted in both cylinders 102, 103. The anti-vibration bushes 104 and 105 have rubber-like elastic bodies 143 and 153 interposed between the inner cylinders 141 and 151 and the outer cylinders 142 and 152, respectively. 15 2 is fixed by press-fitting the cylindrical bodies 102 and 103.

In such a connection rod, a dynamic damper 200 is provided on the rod body 101 for the purpose of improving the vibration isolation characteristics, and a mass member 100 6 for adjusting the mass constituting the damper 200 is provided. Is attached to a part of the rod body 101. Conventionally, as shown in FIG. 10, the mass member 106 is formed, for example, with the rod body 101 by the mass member 106 and the fixing plate 106 a. It is mounted by riveting across 1. 106 b indicates a riveted portion.

However, mounting by riveting while adjusting the mounting position requires a lot of work, and tuning of the natural frequency is not easy. In addition, since the mass member 106 protrudes farther outward than the rod body 101, this may hinder the connection of the engine unit to the vehicle body to support it. Extra space needs to be secured in the room.

According to the present invention, a mass member for mass adjustment for providing a function as a dynamic damper is provided as the connection port for supporting the torque, by suppressing the protrusion to the outside of the port body. It offers easy attachment, easy tuning of natural frequency, and excellent assembly and mounting.

[Disclosure of the invention]

The present invention relates to a rod body, a bush holding cylinder connected to both ends of the rod body, an anti-vibration push with an inner cylinder provided inside both cylinders, A connection port comprising a mass member attached to the main body, wherein said port main body has two end portions connected to said cylindrical bodies so that the plate surfaces are opposed to each other; The mass member is sandwiched between two plates at arbitrary positions in the longitudinal direction of the rod body via a rubber-like elastic body, and is attached. .

According to the above-mentioned connecting port, a mass member for causing the port main body to function as a dynamic damper is sandwiched between the two plates, so that troublesome work such as riveting is not required. It can be easily attached, and it is easy to adjust the mass of the mouth body and tune the natural frequency. In addition, the mass member is held between the two plates, and does not protrude significantly from the rod body. Therefore, when the engine unit is used as a torque rod that is connected to and supported by the vehicle body, the mass member does not interfere, and there is no need to secure extra space in the engine room.

In the connection port pad, substantially central portions in the longitudinal direction of the two plates are opposed to each other and bulged outwardly in a curved shape, and the inside is formed as a holding portion having a substantially circular shape. It is preferable that the mass member is sandwiched between the two plates via a rubber-like elastic body and is held so as to be located substantially at the center in the holding portion.

Accordingly, the mass member can be held without greatly extending from the rod body, and the mass member is located substantially at the center of the holding portion due to the bulging of the two plates, and is supported by the connection port pad. By resonating with the vibration of the object due to the elastic action of the rubber-like elastic body, it is possible to achieve a good vibration absorption function as a dynamic damper.

In the above-mentioned connecting rod, the mass member is joined to an outer cylinder disposed outside thereof via a rubber-like elastic body that is vulcanized and bonded to the outer cylinder, and the bulging portions of the two plates are formed. It is preferable that the outer cylinder is press-fitted into and held by the holding portion. That is, the mass member can be easily and securely attached by the press-fitting means, and the adjustment and tuning of the mass are further facilitated, and the mass member does not protrude greatly.

In the connecting rod, the mass member is formed by vulcanizing and adhering a plate-like rubber-like elastic body extending radially at opposing positions to an outer periphery thereof, and the rubber-like elastic body is attached to the play member by the vulcanizing member. It can also be sandwiched and held by a flat plate portion that is continuous with the holding portion.

Also in this case, the mass member can be easily and surely held at a position substantially at the center of the holding portion formed by the bulging of the two plates, and the mass adjustment tube can be adjusted. —Easing is easy and the mass member does not protrude greatly outward. In the above connecting rod, a locking piece partially embedded in the plate-like rubber-like elastic body is provided, and the locking piece is engaged with at least one of the two plates by a caulking means. It can be made. In this case, the rubber-like elastic body sandwiched between the two plates is engaged with at least one of the plates by the locking piece embedded therein, and there is no risk of detachment due to vibration, etc. It is stably held at the clamping position.

In the connection port pad of each of the above inventions, both end portions of the both plates are formed to be bent along the outer circumferences of the two cylinders for holding the bush, respectively, and the both end portions are brought into contact with the outer periphery of the cylinder. It is preferable to fix the joint by welding means.

This makes it possible to easily and accurately join the two plate plates to the push holding tubular body, and to reliably hold the mass member by being sandwiched.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of a connection port according to the present invention.

Fig. 2 is a front view of the connecting rod, with a part of the connecting rod being cut away.

FIG. 3 is a cross-sectional view taken along the line X1-X1 of FIG. FIG. 4 is a plan view showing a second embodiment of the connection port according to the present invention.

FIG. 5 is a cross-sectional view taken along line X 2 -X 2 in the preceding figure.

FIG. 6 is a plan view showing a third embodiment of the connecting rod of the present invention.

FIG. 7 is a cross-sectional view taken along line X 3 —X 3 in the preceding figure.

FIG. 8 is a plan view of the mass member mounting body.

FIG. 9 is a front view of the mass member mounting body.

FIG. 10 is a plan view of a conventional connection pad. [Best mode for carrying out the invention]

Hereinafter, a preferred embodiment of the connecting rod of the present invention will be described with reference to the drawings, but the present invention is not limited thereto.

FIGS. 1 to 3 show a first embodiment of a connection port according to the present invention.

In the figure, 1 is a rod body made of a metal material of a required length, 2 and 3 are bush holding cylinders respectively connected to both ends of the rod body 1, and 4 and 5 are both cylinder bodies. Reference numerals 2 and 3 denote anti-vibration bushes with an inner cylinder provided respectively in the inside, and 6 denotes a mass member attached to the mouth body 1.

Each of the vibration-isolating bushes 4 and 5 has a rubber-like elastic body 43 between the inner cylinders 41 and 51 and the outer cylinders 42 and 52 which are attachment members for a shaft member (not shown). The outer cylinders 42, 52 are press-fitted and fixed to the cylinders 2, 3, respectively. In the case of the figure, the large-diameter-side vibration-isolating bush 5 is provided with a cavity 54 penetrating through the rubber elastic body 53 in the axial direction. The anti-vibration bush can be installed in the cylindrical bodies 2 and 3 by omitting the outer cylinders 42 and 52 described above.

The mouth main body 1 is composed of two rod plates 11 and 12. Both ends of the plates 11 and 12 are joined to the outer periphery of the cylinders 2 and 3 by welding means, and are arranged side by side so that the plate surfaces of the cylinders 2 and 3 face each other. . As shown in the figure, both end portions 11a and 12a of both plates 11 and 12 are bent and formed along the outer circumferences of both cylindrical bodies 2 and 3, and both end portions 1 1a , 12a can be easily and accurately joined and fixed by contacting the outer circumferences of both cylinders 2 and 3 and welding. l ib and 1 2b indicate welds.

The mass member 6 is sandwiched and attached between the plates 11 and 12 via a rubber-like elastic body 7 at a substantially central portion in the longitudinal direction of the mouth main body 1. Preferably, the substantially central portions in the longitudinal direction of the two plates 11 and 12 are opposed to each other and bulged outwardly in a curved shape. Are formed as holding parts lie, 12 c that form a substantially circular space, and a mass member 6 having a round bar shape is provided at approximately the center of the holding parts 11 c, 12 c via a rubber-like elastic body 7. It is held to be located. It is preferable that the mass member 6 has a length shorter than the width dimension of the two plates 11 and 12.

In particular, in the case of the first embodiment, the mass member 6 is composed of an outer cylinder 8 arranged so as to surround the outside with the same axial center, and a rubber-like elastic body 7 vulcanized and bonded to both. The outer cylinder 8 is pressed into and held by the holding portions 11 c and 12 c formed by the bulging of the plates 11 and 12. The rubber-like elastic body 7 is provided on the outer periphery of the mass member 6 so as to face each other.

According to this press-fitting means, the mass member 6 is attached by the press-fitting means of the outer cylinder 8 in a state where the two plates 11 and 12 are joined to the cylinders 2 and 3 to form the rod body 1. It is easy to assemble, and can easily adjust the mass and tune. When the mass member 6 is not required, a cylinder corresponding to the outer cylinder 8 can be pressed into the holding portions 11c and 12c to reinforce the rod body 1. .

FIG. 4 and FIG. 5 show a second embodiment of the connection port of the present invention. In the second embodiment, the same components and components as those in the first embodiment are denoted by the same reference numerals.

In the second embodiment, plate-like rubber-like elastic bodies 7a, 7a extending in the radial direction at opposing positions are vulcanized and bonded to the outer periphery of the mass member 6; The elastic members 7a, 7a are sandwiched between the flat portions 11d, 12d which are continuous with the holding portions 11c, 12c of the plates 11 and 12, thereby obtaining the mass. The member 6 is held so as to be located substantially at the center of the holding portions 11 c and 12 c of the plates 11 and 12. The rubber-like elastic bodies 7 a and 7 a are flat plates from the holding portions 11 c and 12 c of the plates 11 and 12. It is formed slightly thin at the end so as to correspond to the shape reaching the shape 11 d, 12 d, and the mass member 6 is accurately positioned approximately in the center of the holding portions 11 c, 12 c. You can get it. It is preferable that the length of the mass member 6 of this embodiment is also shorter than the width of the plates 11 and 12.

In the mounting structure of the mass member 6, the rubber-like elastic bodies 7a and 7a are sandwiched between the two plates 11 and 12 by using one of the two plates 11 and 12 Are welded to the cylinders 2 and 3, and the mass member attachment body 60 in which the rubber-like elastic bodies 7 a and 7 a are vulcanized and bonded to the mass member 6 is sandwiched at a predetermined position, and The plates may be welded to the cylinders 2 and 3.

Also in this embodiment, the mass member 6 can be easily and accurately positioned and held at substantially the center of the holding portions 11c and 12c of the plates 11 and 12 respectively.

FIGS. 6 to 9 show a third embodiment of the present invention in which the second embodiment is improved. Components and components common to those of the second embodiment are denoted by the same reference numerals. .

In the case of the connecting rod of this embodiment, there are locking pieces 9, 9 partially embedded in the plate-like rubber-like elastic bodies 7 a, 7 a. At least one of the plates 11 and 12 (both in the case of the figure) is engaged by swaging.

That is, when molding the mass member mounting body 60 formed by vulcanizing and bonding the plate-like rubber-like elastic bodies 7a, 7a extending in the radial direction opposite to the mass member 6, FIG. As shown in FIG. 9, the locking pieces 9, 9 are partially buried and attached. Then, in the same manner as in the second embodiment, the rubber-like elastic bodies 7a, 7a on both sides are formed into a flat plate-like shape that is continuous with the holding portions 11c, 12c of the plates 11 and 12. After being clamped by the parts lld and 12d, the protruding ends of the locking pieces 9 and 9 Swage the parts and engage one or both plates 11 and 12 as shown in FIG.

As a result, the rubber-like elastic bodies 7a, 7a sandwiched between the plates 11 and 12 are stably held at a predetermined sandwiching position without fear of detachment.

The connection port of each of the above-described embodiments is mainly used to suppress the movement or vibration of the engine unit in the roll direction when the engine unit including the transmission and the like is incorporated in the vehicle body and supported by a vibration isolating mount. A part of the unit is used as a torque rod connecting to the vehicle body. In this use, since the mass member 6 resonates with the vibration of the object to be supported by the connecting rod by the spring action of the rubber-like elastic body 7 or 7a, 7a, a good vibration absorbing action as a dynamic damper is obtained. Can do it.

The mass member 6 for adjusting the mass is held between the two plates 11 and 12, particularly at a substantially center between the substantially circular holding portions llc and 12 c. Since the mass member does not protrude significantly from the main body 1, the mass member does not interfere, and there is no need to secure an extra space in the engine room, so that mountability and assemblability can be improved.

[Industrial feasibility]

ADVANTAGE OF THE INVENTION According to the connection port of this invention, the mass member for giving a function as a dynamic damper can be easily attached to a body of a port, and can be attached to a compact, and assemblability and mountability are improved. Excellent, especially suitable for use as a torque rod for supporting torque when an automobile engine is mounted on a vehicle body and supported.

Claims

The rod body, bush holding cylinders connected to both ends of the rod body, an anti-vibration push with an inner cylinder provided inside both cylinders, and the rod body A connection port comprising an attached mass member,

The mouth main body is composed of two rod plates that are arranged side by side with their plate surfaces facing each other and are connected to the two cylinders at an arbitrary position in the longitudinal direction of the mouth main body. The connecting rod, wherein the mass member is sandwiched and attached between the two plates via a rubber-like elastic body.

A substantially central portion in the longitudinal direction of the two plates is opposed to each other and bulged outwardly in a curved shape, and the inside is formed as a holding portion having a substantially circular shape. 2. The connection port pad according to claim 1, wherein the connection port pad is sandwiched between the two plates via a body and held so as to be located substantially at the center in the holding section.

The mass member is joined to an outer cylinder arranged outside thereof via a rubber-like elastic body vulcanized and bonded to both, and the mass member is formed with respect to a holding portion formed by swelling of the two plates. 3. The connection port pad according to claim 2, wherein the outer cylinder is press-fitted and held.

The mass member is formed by bonding a vulcanized rubber-like elastic body extending radially at opposing positions to the outer periphery of the mass member, and the elastic body is a flat plate-like body that is continuous with the holding portions of the plates. 3. The connection port pad according to claim 2, wherein the connection port pad is sandwiched and held by the portion.

The device according to claim 4, further comprising a locking piece partially embedded in the plate-like rubber-like elastic body, wherein the locking piece is engaged with at least one of the two plates by caulking means. Connection opening head.

. Both ends of the two plates are connected to both cylinders for holding the bush, respectively. The connection pad according to any one of claims 1 to 5, wherein the connection port is formed so as to be bent along the outer periphery, and both end portions thereof are brought into contact with the outer periphery of the cylindrical body and joined and fixed by welding means.