JPS5842674Y2 - Torque damper device - Google Patents

Description

[Detailed description of the invention] This invention is mainly installed between the output shaft of the engine and the flywheel, and is caused by unbalanced torque of the engine.

The present invention relates to a torque damper device that prevents torsional resonance in a drive system.

Conventionally, devices of this type that use coil springs, rubber, etc. as shock absorbers are already known, but torque dampers using coil springs are difficult to achieve a large torsion angle due to their structure, and are usually around 6 degrees. However, since the volume of the coil spring occupies a small proportion of the entire torque damper, there is a problem in that the space utilization rate is poor and it is not possible to downsize the torque damper.

In addition, torque dampers that use rubber as a shock absorber are made of springs, steel,
The maximum stored energy per unit is smaller than reinforced plastics, etc., so it is difficult to make it compact, and its durability is affected by environmental temperature, so it may be subject to restrictions in use at high or low temperatures. There is a problem.

This invention was made with the aim of improving this problem, and is intended to provide a torque damper device with a simple structure, which is compact and has a large torsional angle, with a shock absorber made of spring steel or reinforced plastic.

This invention will be described in detail below with reference to an illustrated embodiment.

In the figure, reference numeral 1 denotes an input disk attached to a flywheel or the like provided on the output shaft of an engine (not shown).A large number of holes 1a are drilled at equal intervals on the periphery, and a hole 1a is bored in the center. A large-diameter through-hole 1b is provided, and a plurality of small-diameter, for example, six through-holes 1c are bored around the same circumference at equal intervals.

Reference numeral 2 designates a pair of output disks provided at a distance of l on both sides of the input disk 1, with a through hole 1b of the input disk 1 in the center.
A boss 2a is provided that fits loosely into the hub 2a, and a spline 2b is provided on the inner surface of the boss 2a with which an end of a power transmission shaft or the like engages.

In addition, pin holes 2c are bored in each output disk 2 at positions that match the through holes 1C of the input disk 1, and spacers 3 provided between these pin holes 2c and each output disk 2 are provided with pin holes 2c. Fixing devices 4 such as bolts and rivets are inserted through each of them.

The spacer 3 is for maintaining a constant distance between each output disk 2, and is loosely inserted into the through hole 1c of the input disk 1, so that the input disk 1 is rotated in the rotational direction with respect to the output disk 2. In addition, a nut h4a is screwed into the tip of the fixing tool 4, and each output disk 2 is fastened and integrated with the fixing tool 4 and the nut h4a.

A substantially C-shaped buffer body 5 is provided between the input disk 1 and both output disks 2 so as to be located outside each bolt 4.

The buffer bodies 5 are made of spring steel or reinforced plastic, and one end of each buffer body 5 is locked to both sides of the input disk 1 by two locking pins 6 with a 180° phase shift, and the other end is locked to both sides of the input disk 1 by two locking pins 6. The sides of the output disk 2 are locked to the side surfaces of the input disk 1 by two locking pins 7 with a phase shift of 180°.

On the other hand, reference numeral 8 denotes friction plates that are fixed to both sides of the input disk 1 by pins 9 so that they rotate together with the input disk 1, and these friction plates 8 are biased by disc springs 10. The friction washer 11 is pressed into contact with the friction washer 11 .

As shown in FIG. 5, the friction washer 11 is provided with a semicircular notch 11a in a portion that matches each spacer 3, and by fitting a part of the spacer 3 into these notches 11a, the friction washer 11 is 11 rotates together with the output disk 2.

Note that 12 is a stop for removing the locking pins 6 and 7.

As described in detail above, this invention interposes a buffer body 5 made of spring steel, reinforced plastic, etc. into a substantially C-shape between the input disk 1 and the output disks 2 provided on both sides of the input disk. 5 is locked to the input disk 1 with a phase shift of 180 degrees, and the other end is locked to the output disk 2 by locking pins 6.7, so that the power transmitted to the input disk 1 is Since it is transmitted to the output disk 2 via the buffer 5, when used in the power system of an engine, torsional resonance caused by unbalanced torque of the engine can be prevented, and when used in various power systems, the shaft system It is possible to improve the vibration and shock characteristics by lowering the rigidity of the

In addition, the middle part of the fixing tool 4, which has both ends fixed to each output disk 2, was loosely inserted into the through hole 1C opened in the input disk 1, so that there was no space between the input disk 1 and the output disk 2. Even if an excessive torque is applied, the fixing member 4 contacts the inner periphery of the through hole 1C and supports it, so there is no risk of the shock absorber 5 or its attachment being damaged by excessive torque, and the above-mentioned Since the fixing device 4 is installed inside (center side) of the buffer body 5, compared to the conventional one installed outside (outer circumferential side) of the buffer body 5, a larger arcuate spring is required for a torque damper of the same diameter. can be used, thereby making it possible to increase the maximum torsion angle and/or the maximum torque.

In addition, by shifting the phase of each shock absorber 5 by 180 degrees, the thrust force acting on the shock absorber 5 can be canceled out, and by locking the ends of the shock absorber 5 with two locking pins 6.7. ,
Since a slight bending is allowed at the end of the buffer body 2, a uniform bending moment is applied to the entire buffer body 5,
The buffer body 5 will not be damaged due to local stress.

[Brief explanation of the drawing]

The drawings show an example of how this invention is rolled up, and Figure 1 is a longitudinal cross-sectional view;
Figure 2 is a view from the middle of Figure 1, and Figure 3 is the same as Figure 1.
4 is a front view of the input disk, and FIG. 5 is a front view of the friction washer. 1 is an input disk, 2 is an output disk, 4 is a fixture, 5 is a buffer, and 6 and 7 are locking pins.

Claims (1)

[Scope of utility model registration request] Between the input disk 1 and the output disk 2 provided with a gap on both sides thereof, a buffer body 5 made of an elastic material and formed into a substantially C-shape is interposed. are shifted by approximately 180 degrees and are locked to both sides of the input disk 1, and the other end is locked to one side of the output disk 2 by locking pins 6.7, and provided along the inside of the buffer body 5. A torque damper device in which each output disk 2 is connected and integrated by a fixing member 4.