JPH10184793A - Suspending mount device for unit with power transmitting shaft - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain a power transmitting shaft from shifting by shaft torque efficiently. SOLUTION: A pair of unit mounting parts 21 are formed at the upper part of a unit, a pair of intermediate brackets 24a, 24b are disposed between a supporting frame 5 above the unit and the unit, a lower mount rubber 28 is fitted between a unit jointing part upper surface at an intermediate bracket upper part and a unit mounting part lower surface, and an upper mount rubber 26 is fitted between a frame jointing part lower surface at the intermediate bracket lower part and the supporting part upper surface of the supporting frame. By forming them so that a pair of extension lines X connecting the upper mount rubber and the lower mount rubber when viewed from the axial direction of a power transmitting shaft may expand upward, a trapezoid link mechanism 29 is formed so that the reaction generated when the shaft torque is applied to the power transmitting shaft may be escaped by shifting in the circumferential direction of the unit with power transmitting shaft area used as a fulcrum, thus it is possible to restrain the power transmitting shaft from shifting so as to be minimum.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension mounting device for a unit having a power transmission shaft for suspending and supporting a unit having a power transmission shaft for outputting and inputting power.

[0002]

2. Description of the Related Art Hydraulic pumps / motors incorporated in the body of an automobile (vehicle) as devices constituting a deceleration energy regeneration device recover kinetic energy from a power transmission shaft as hydraulic energy or output the recovered hydraulic energy. Also known as a unit.

Such a unit is usually mounted on a support frame constituting a vehicle body at three points by using rubber in order to prevent vibrations generated when the unit operates.

More specifically, conventionally, as shown in FIG. 5, rubber mounts 2 and 2 supporting both sides of a main body 1a of a unit 1, and a center of an end shaft of the unit 1 where a power transmission shaft 3 is located are supported. Using a three-point mount with a rubber mount 4 to be supported, a support frame 5 positioned above the unit 1 is used to support the unit.

[0005] Such a structure for supporting and mounting the central portion of the shaft of the unit 1 supports the position of the power transmission shaft 3 itself, so that the movement of the power transmission shaft 3 due to the shaft torque is regulated and the generated vibration is prevented. It is effective in shaking.

[0006]

However, in this mounting device, a bracket 6 for supporting the shaft center of the unit 1 is provided.
When the unit 1 having a long axial dimension is mounted or the place where the bracket 6 is arranged cannot be used as a mounting part, the bracket 6 is arranged. And the structure for supporting the center of the end shaft of the unit 1 cannot be established.

Such a situation occurs when the function of the unit 1 changes or the structure of the installation side changes. Therefore,
As a countermeasure, instead of a structure for supporting the center of the end axis of the unit 1, a structure in which the bracket 6 is unnecessary and which suspends and supports the end of the unit 1 as shown in FIG. 6 has been considered.

[0008] This is provided with a pair of unit mounts 8, 8 extending laterally on the upper part of the unit 1, from the support frame 5 located on the upper part of the unit 1.
In this structure, a pair of L-shaped support seat members 9, 9 extending downward from the bottom of the unit mount 8 are suspended, and an anti-vibration rubber 10 is interposed between the lower surface of the unit mount 8 and the upper surface of the support seat member 9.

However, with this structure, the entire unit swings like a pendulum in the left and right direction with the unit mount 8 as a fulcrum due to the reaction when the shaft torque is applied to the power transmission shaft 3.

In order to output or input power through the power transmission shaft 3 of the unit 1, it is desirable that the lateral displacement (displacement) of the power transmission shaft 3 be as small as possible.

However, the entire unit swings right and left, and the reaction force due to the shaft torque is released in the lateral direction.
Is greatly displaced in the lateral direction. Of course, such problems occur not only with hydraulic motors / pumps, but also with units such as engines and transmissions.

[0012] Such displacement of the power transmission shaft 3 also causes vibrations generated by rotation to resonate. Therefore, an improvement in suppressing the displacement as much as possible is required. The present invention has been made by focusing on the above circumstances, and its purpose is to
An object of the present invention is to provide a suspension mounting device for a unit with a power transmission shaft, which can efficiently suppress movement of the power transmission shaft due to shaft torque.

[0013]

According to a first aspect of the present invention, there is provided a suspension mounting apparatus for a unit having a power transmission shaft, wherein a pair of vertical units including a power transmission shaft are sandwiched above the unit. A pair of unit mounts are provided so as to protrude to the side, and a frame connection part is provided at the upper part at the lower part corresponding to the pair of unit mount parts between the support frame located above the unit and the unit. A pair of intermediate brackets each having a connecting portion are arranged, a lower mount rubber is interposed between the upper surface of the unit connecting portion of each intermediate bracket and the lower surface of each unit mounting portion, and the lower surface of the frame connecting portion of each intermediate bracket and An upper mount rubber is interposed between the upper frame and the upper surface of the support portion provided on the support frame, and the upper mount rubber is viewed from the axial direction of the power transmission shaft. And a pair of extension lines connecting the lower mount rubber and the lower mount rubber are configured to expand upward, so that when an axial torque is applied, the entire unit is displaced in a circumferential direction around a power transmission shaft as a fulcrum. .

That is, according to the suspension mounting apparatus for a unit with a power transmission shaft according to the first aspect, the unit is:
The intermediate bracket is suspended from the support frame by a trapezoidal link mechanism that forms a pair of links and has an open upper part.

Here, it is assumed that an axial torque is applied to the power transmission shaft of the unit. Then, by the action of the rotational moment caused by the shaft torque, the intermediate bracket on the rear side in the rotational direction of the power transmission shaft forming the trapezoidal link mechanism is deformed by the upper mount rubber and the lower mount rubber, and the support bracket of the support frame is moved. , A displacement occurs in a direction approaching the power transmission shaft.

This deflection acts in a direction to push the rear part of the unit in the rotation direction obliquely upward. On the other hand, the intermediate bracket on the front side in the rotation direction generates a displacement that swings in a direction away from the power transmission shaft with the support portion of the support frame as a fulcrum, while deforming the upper mount rubber and the lower mount rubber.

This deflection acts in a direction to push the front part of the unit in the rotation direction obliquely downward. The push-up / pull-down of the unit caused by these intermediate brackets appears as a behavior of displacing the entire unit in the circumferential direction with the vicinity of the power transmission shaft as a fulcrum when viewed from the axial direction of the unit.

That is, the reaction when the shaft torque is applied to the power transmission shaft escapes as the unit moves in the circumferential direction around the power transmission shaft as a fulcrum. Therefore, the position of the power transmission shaft does not change much from the initial position even when the shaft torque is applied.

This means that the movement of the power transmission shaft due to the shaft torque is efficiently suppressed. Moreover, at the same time, the transmission of vibration is interrupted by the double vibration-proof effect of the upper mount rubber and the lower mount rubber, so that effective vibration control is also achieved.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on a first embodiment shown in FIGS. Here, the present invention relates to the unit 1 described in the section of the prior art.
Therefore, the structure of the mounting device for mounting the end portion of the unit 1 will be described here. However, the unit 1 of this embodiment is also mounted on the support frame 5 with rubber mounts 2 on both sides, but the structure is the same as that of FIG.

That is, a suspension mounting device for mounting the end portion of the unit 1 on the support frame 5 will be described. FIG. 1 is a plan view of the suspension mounting device, and FIG.
1 is a cross-sectional view taken along the line A-A in FIG. 1, respectively. In FIG. 1, reference numeral 20 denotes, for example, a strip-shaped mount member provided on the upper portion of the unit 1 so as to protrude equally to both left and right sides. .

Both left and right ends of the mount member 20 are bent obliquely downward. The pair of inclined portions, more specifically, the pair of inclined portions protruding sideways with the vertical plane a including the power transmission shaft 3 interposed therebetween,
A pair of unit mount portions 21 and 21 are formed.

In the support frame 5 disposed above the unit 1, a pair of frame members 5a arranged in parallel on the left and right sides of the vertical surface a
For example, a pair of plate-shaped support seat members 22 protruding toward is provided. The tip portions of the support seat members 22 are bent obliquely upward, and these inclined portions form a pair of support portions 23.

The pair of support portions 23, 23 are arranged at positions farther from the vertical plane a than the pair of unit mount portions 21, 21. A pair of intermediate brackets 2 are provided between the frame member 5a and the unit 1 corresponding to the support portions 23 and the unit mount portions 21 and 21, respectively.
4a and 24b are arranged.

These intermediate brackets 24a, 24b
For example, it is composed of a pair of members having a U-shaped cross section, whose open sides are arranged inward toward each other in parallel, and the upper walls of these intermediate brackets 24 a and 24 b are arranged above the support portion 23. An upper wall portion disposed above the support portion 23 forms a frame connecting portion 25 for connecting a support frame.

Between the lower surface of the frame connecting portion 25 and the upper surface of the support portion 23, an upper mount rubber 26 made of a vibration-proof rubber is interposed.
, The intermediate brackets 24a and 24b are respectively suspended.

The lower walls of the intermediate brackets 24a and 24b are arranged below the unit mounts 21 and 21, respectively. A unit connecting portion 27 for unit connection is formed by a lower wall portion of the channel member disposed below the unit mount portions 21 and 21.

Lower mount rubbers 28 each made of a vibration-proof rubber are interposed between the upper surface of the unit connecting portion 27 and the lower surface of the unit mount portion 21, and intermediate brackets 24a, 24b, 2 The unit 1 is suspended via heavy anti-vibration rubber (upper mount rubber, lower mount rubber).

When viewed from the axial direction of the power transmission shaft 3, a pair of extension lines X connecting the left and right upper mount rubbers 26 and the left and right lower mount rubbers 28 are positioned in a linear state expanding upward. , Support frame 5 and unit 1
, The intermediate brackets 24a and 24b form a trapezoidal link mechanism 29 forming a pair of links. That is,
The unit 1 is suspended by a trapezoidal link mechanism 29 whose upper part is expanded.

When an axial torque is applied to the power transmission shaft 3 of the unit 1 by the suspension of the unit 1 by the trapezoidal link mechanism 29, the entire unit is displaced in the circumferential direction around the power transmission shaft as a fulcrum due to the reaction. It is like that.

The frame connecting portions 25 of the intermediate brackets 24a and 24b extend in the front-rear direction, and two upper mount rubbers 26 are provided for each intermediate bracket. As described above, each of the intermediate brackets 24a and 24b is formed in a T-shape as a whole, and each intermediate bracket 24a is formed by utilizing a space between the support seat members 22 arranged corresponding to each of the upper mount rubbers 26. , 24b are displaced.

The behavior at this time will be described. Assume that an axial torque is applied to the power transmission shaft 3 of the unit 1 suspended from the support frame 5. Then, due to the action of the rotating moment caused by the shaft torque, the intermediate bracket 24a on the rear side in the rotation direction of the power transmission shaft 3 forming the trapezoidal link mechanism 29 is shown in the schematic diagrams shown in FIGS. As described above, the lower side swings in a direction approaching the power transmission shaft 3 with the support portion 23 as a fulcrum while the upper mount rubber 26 and the lower mount rubber 28 are deformed.

This deflection acts in a direction to push the rear portion of the unit 1 in the rotation direction obliquely upward. The intermediate bracket 24b on the front side in the rotation direction swings in a direction in which the lower side is separated from the power transmission shaft 3 with the support portion 23 as a fulcrum, while the upper mount rubber 26 and the lower mount rubber 28 are deformed.

This deflection acts in a direction to push down the front part in the rotation direction of the unit 1 obliquely downward, contrary to the case of the intermediate bracket 24a. The push-up / pull-down of the unit 1 caused by the intermediate brackets 24a and 24b of the trapezoidal link mechanism 29 causes the entire unit to be displaced in the circumferential direction with the vicinity of the power transmission shaft 3 as a fulcrum when viewed from the axial direction of the unit 1. It appears as a behavior to make it. This is because an upper displacement component occurs on the rear side in the rotation direction of the unit 1 with respect to the vertical plane a, a lower displacement component occurs on the front side in the rotation direction of the unit 1, and a lateral displacement occurs in accordance with the upward and downward displacement components. It is clear that the components change.

That is, the reaction when the shaft torque is applied to the power transmission shaft 3 escapes as the unit 1 moves in the circumferential direction around the power transmission shaft as a fulcrum. However, even when the shaft torque is applied, the power transmission shaft 3 moves a small amount (minimum) and does not change much from the initial position.

Therefore, the movement of the power transmission shaft 3 due to the shaft torque can be efficiently suppressed. In addition, at the same time, the transmission of vibration can be efficiently cut off by the double vibration isolation effect of the upper mount rubber 26 and the lower mount rubber 28, and effective vibration isolation can be achieved.

FIG. 4 shows a second embodiment of the present invention.
In the present embodiment, the trapezoidal link mechanism 29 is configured so that a pair of extension lines X connecting the upper mount rubber 26 and the lower mount rubber 28 is a straight line passing through the power transmission shaft 3.

In this way, the circumferential displacement of the unit 1 caused when the shaft torque is applied to the power transmission shaft 3 is generated at the power transmission shaft 3 as a fulcrum or at a portion very close to the power transmission shaft 3 as a fulcrum. So,
The movement of the power transmission shaft 3 can be suppressed.

However, in FIG. 4, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the above-described embodiment, the present invention is applied to a device for mounting a hydraulic pump / motor. However, the present invention is not limited to this, and may be applied to a mount of a unit having a power transmission shaft such as an engine or a transmission. Needless to say.

[0040]

As described above, according to the first aspect of the present invention, when a shaft torque is applied to the power transmission shaft by the trapezoidal link mechanism formed between the support frame and the unit, the reaction is generated. The unit moves around the power transmission shaft as a fulcrum in the circumferential direction and escapes.

As a result, the position of the power transmission shaft does not change much from the initial position even when the shaft torque is applied.
Movement of the power transmission shaft due to shaft torque can be efficiently suppressed. In addition, at the same time, the transmission of vibration can be efficiently cut off by the double vibration isolation effect of the upper mount rubber and the lower mount rubber, and effective vibration isolation can be performed.

[Brief description of the drawings]

FIG. 1 is a plan view showing a suspension mount device according to a first embodiment of the present invention.

FIG. 2A is a cross-sectional view taken along line A-A in FIG.
(B) is a sectional view for explaining the behavior of the unit when the shaft torque is applied to the power transmission shaft.

FIG. 3 is a diagram for explaining the behavior of the unit in an easily understandable manner.

FIG. 4 is a diagram showing a suspension mount device according to a second embodiment of the present invention together with the behavior of a unit when an axial torque is applied to a power transmission shaft.

FIG. 5 is a plan view for explaining a structure in which a hydraulic pump / motor is conventionally mounted on a support frame.

FIG. 6 is a view showing a suspension mounting device which is considered as a measure for preventing the movement regulation of the power transmission shaft of the mounting structure from being insufficient.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Unit 3 ... Power transmission shaft 5 ... Support frame 5a ... Frame member 21 ... Unit mount part 23 ... Support part 24a, 24b ... Intermediate bracket 25 ... Frame connection part 26 ... Upper mount rubber 27 ... Unit connection part 28 ... Lower mount Rubber 29: trapezoidal link mechanism.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeshi Kenno 5-33-8 Shiba, Minato-ku, Tokyo Inside Mitsubishi Motors Corporation

Claims (1)

[Claims] 1. A suspension mounting device for a unit having a power transmission shaft having a power transmission shaft and suspending and supporting a unit to which power is output or input from the power transmission shaft, wherein the power transmission shaft is provided above the unit. A pair of unit mounts provided so as to protrude laterally in pairs with a vertical plane including the unit, and the pair of unit mounts between a support frame positioned above the unit and the unit A pair of intermediate brackets, each of which has a frame connecting portion formed at an upper portion and a unit connecting portion formed at a lower portion, and an intermediate bracket provided between the upper surface of the unit connecting portion of each intermediate bracket and the lower surface of each of the unit mounting portions. Lower mount rubber mounted between the lower surface of the frame connecting portion of each of the intermediate brackets and the upper surface of the supporting portion provided on the supporting frame. An upper mount rubber interposed therebetween, wherein a pair of extension lines connecting the upper mount rubber and the lower mount rubber are configured to expand upward when viewed from an axial direction of the power transmission shaft. Characteristic hanging unit for unit with power transmission shaft.