JPH0527244U - damper - Google Patents

Abstract

(57) [Abstract] [Purpose] Regarding a torsional damper which is a disk type and a double mass type, heat is retained in the gap 8 between the first damper portion 2 and the second damper portion 5, and the spring member is formed. Prevents 3 and 6 from deteriorating and breaking at an early stage. [Structure] The spring member 6 is provided with a required number of holes 9 or a required number of notches, the gap 8 is communicated to the outside through the holes 9 or the notches, and the heat in the gap 8 is discharged from the holes 9 or the notches to the outside. discharge.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a damper that damps vibrations generated in various rotary drive systems such as a crankshaft of an automobile engine.

[0002]

[Prior Art]

 Conventionally, as shown in FIG. 6, a vibration ring 4 is connected to one side of a hub 1 via a spring member 3 made of a rubber-like elastic material, and the spring member 3 and the vibration ring 4 hold the first damper portion 2 On the outer peripheral side of the first damper portion 2, a vibration ring 7 is connected to the hub 1 via a spring member 6 made of a rubber-like elastic material, and the spring member 6 and the vibration ring 7 hold the second ring. There is known a torsional damper which is a disk type and a double mass type as the damper section 5. The first damper part 2 and the second damper part 5 have different frequencies of vibrations to be damped, so that both parts 2 and 5 can be relatively moved in the rotational direction during operation. , 5, a ring-shaped gap 8 is provided.

[0003]

[Problems to be solved by the device]

 The gap 8 is closed by the hub 1 on one side in the axial direction, that is, it is a stop over the entire circumference when viewed from the left side of the drawing. Also, the damper is attached to the crankshaft with the vibration rings 4 and 7 facing the engine side so that the vibration rings 4 and 7 do not fall off the crankshaft should the spring members 3 and 6 break during operation. Be released. Therefore, the engine (not shown) is located close to the left side of the damper in the figure. As a result, heat is likely to remain in the gap 8 during operation, and the heat may cause the spring members 3 and 6 to deteriorate early and break.

[0004]

[Means for Solving the Problems]

 In view of the above points, the present invention has been devised to solve the above-mentioned problems in the prior art, and in order to achieve this object, a spring member made of a rubber-like elastic material is provided on one side of the hub. To connect the vibration ring, and the spring member and the vibration ring serve as a first damper portion, and the vibration ring is connected to the hub on the outer peripheral side of the first damper portion via a spring member made of a rubber-like elastic material. In the damper having the spring member and the vibrating ring as a second damper portion, and an annular gap is provided between the first damper portion and the second damper portion, (EN) A damper having a required number of holes or a required number of notches for communicating a gap with the outside.

[0005]

[Action]

 The spring member is provided with a hole or a notch, the gap is communicated with the outside through the hole or the notch, and the heat inside the gap is released from the hole or the notch to the outside. The inner wall of the hole is formed by a spring member made of a rubber-like elastic material, and the notch is formed by forming the inner wall of the hole by a spring member made of a rubber-like elastic material and a metal hub.

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

1 and 2 show a first embodiment of the present invention. The damper is a disk type and double mass type torsional damper, and has the following features with respect to the prior art of FIG. That is, a plurality of holes 9 for communicating the gap 8 between the first damper portion 2 and the second damper portion 5 to the outside are equally arranged in the spring member 6 of the second damper portion 5 on the outer peripheral side (FIG. Are arranged in 4), and air is caused to flow in the direction shown by the arrow during operation to radiate the heat in the gap 8 to the outside. Since the holes 9 promote the flow of air, as shown in FIG. 2, the holes 9 have a predetermined angle θ with respect to the radial direction. Therefore, according to this damper, the heat in the gap 8 is released to the outside from the hole 9 to prevent the heat from being accumulated in the gap 8 and prevent the spring members 3 and 6 from being deteriorated early and broken by the heat. Can be prevented.

3 to 5 show a second embodiment of the present invention. The damper is a disk type and double mass type torsional damper like the damper of the first embodiment, and has the following features with respect to the prior art of FIG. That is, a plurality of notches 10 for communicating the gap 8 between the first damper portion 2 and the second damper portion 5 to the outside are equally arranged on the spring member 6 of the second damper portion 5 on the outer peripheral side (FIG. Are arranged in 4 equal parts), and when operating, air is caused to flow in the direction indicated by the arrow to release the heat in the gap 8 to the outside. As shown in FIG. 5, the cutout 10 has a part of the inner wall thereof formed by a metal hub 1. Therefore, according to this damper, the heat in the gap 8 is released from the notch 10 to the outside to prevent the heat from staying in the gap 8 and prevent the spring members 3 and 6 from being deteriorated early and broken. Can be prevented.

[0009]

[Effect of the device]

 The present invention has the following effects. That is, the spring member is provided with a required number of holes or a required number of notches, the gap is communicated to the outside through the holes or notches, and the heat in the gap is discharged from the holes or notches to the outside. It is possible to prevent heat from staying in the gap and prevent the spring member from being deteriorated and broken at an early stage due to the heat.

[Brief description of drawings]

FIG. 1 is a half sectional view of a damper according to a first embodiment of the present invention.

[Fig. 2] Side view of a half cut of the damper

FIG. 3 is a half sectional view of a damper according to a second embodiment of the present invention.

FIG. 4 is a half-cut side view of the damper.

5 is a sectional view taken along line AA in FIG.

FIG. 6 is a half-cut sectional view of a damper according to a conventional example.

[Explanation of symbols]

 1 hub 2 first damper part 3,6 spring member 4,7 vibrating ring 5 second damper part 8 gap 9 hole 10 notch

Claims (1)

[Scope of utility model registration request] 1. A vibration ring 4 is connected to one side of a hub 1 via a spring member 3 made of a rubber-like elastic material, and the spring member 3 and the vibration ring 4 are used as a first damper portion 2. A vibration ring 7 is connected to the hub 1 on the outer peripheral side of the damper portion 2 via a spring member 6 made of a rubber-like elastic material,
In the damper in which the spring member 6 and the vibration ring 7 are used as a second damper portion 5, and an annular gap 8 is provided between the first damper portion 2 and the second damper portion 5, the spring member 3 , 6 are provided with a required number of holes 9 or a required number of notches 10 for communicating the gap 8 with the outside.