JPH0538423U - Flexible joint - Google Patents

Abstract

(57) [Summary] [Structure] A disk-shaped main body 10 made of a single plate of steel is provided. Bosses a and b are integrally formed at a plurality of locations on the circumference of the main body 10. The boss portions a and b are for holding the group of elastic connecting means 14. At least both surfaces of the main body 10 are covered with the reinforcing resin R. [Effect] Since at least both sides of the main body 10 can be covered with the reinforcing resin R to reduce the weight, it is possible to provide a low-priced product by using a steel plate. In addition, processing is facilitated and manufacturing cost can be reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a flexible joint, and more particularly, to a flexible joint using an elastic body such as rubber as a torque transmission element.

[0002]

[Prior Art]

 Generally, this type of flexible joint is for connecting a drive shaft and a driven shaft arranged on the same axis when transmitting torque on the engine side to a driven member side such as a propeller shaft. A structure having the above structure has been proposed (for example, Japanese Utility Model Application No. 58-21818).

In the structure, a main body made of an aluminum annular case member formed by extrusion molding and a group of elastic members arranged in a plurality of circumferentially elastically deformable states on the circumference of the main body. And connecting means. The elastic connecting means comprises a first elastic connecting member connected to a rotating shaft facing one side of the main body and a second elastic connecting member connected to a rotating shaft facing the other side of the main body. The purpose of this is to transmit the torque of the drive-side rotary shaft to the driven-side rotary shaft on the same shaft, and to buffer the vibrations and shocks generated on both shafts.

In the above structure, since the main body is made of the annular case member made of aluminum, it is possible to form a flexible joint that is light and has excellent durability. However, if the main body is made of an aluminum product, there is a problem that the cost becomes high and it is not preferable in practice. Therefore, there has been proposed a case in which a main body made of an annular case member is made of steel, but there is a problem that the weight becomes considerably heavier than that of aluminum. Further, when the weight of the main body is reduced by reducing the thickness of the main body, it is impossible to obtain sufficient rigidity as compared with the aluminum main body.

Therefore, instead of the annular case member, a disc-shaped main body has been developed by bonding a pair of steel plates by spot welding or the like.

[0006]

[Problems to be solved by the device]

 When the steel plate body having the above configuration is adopted, it is possible to achieve a certain weight reduction and cost reduction. However, simply forming the disk-shaped body by pasting steel plates together requires the joining of thick steel plates with a considerable thickness in order to obtain sufficient strength to withstand practical use. It was not possible to reduce the weight.

In addition, in the structure in which a pair of steel plates are bonded together, the number of processing steps such as welding cannot be reduced, and the welded portion may be damaged. The present invention has been made in view of the above problems, and an object thereof is to provide a lightweight and inexpensive flexible joint having sufficient rigidity.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the flexible joint of the present invention is a body made of a disc-shaped metal plate material, and is elastically deformably held at a plurality of locations on the circumference of the body, and is attached to one side surface of the body. A flexible joint comprising: a first elastic connecting member connected to an opposing rotating shaft; and a group of elastic connecting means composed of a second elastic connecting member connected to the rotating shaft opposing to the other side surface. The main body is composed of a steel single plate integrally provided with a boss portion for holding a group of elastic connecting means, and at least both surfaces of the main body are covered with a reinforcing resin.

[0009]

[Action]

 According to the flexible joint of the present invention having the above structure, since the main body is formed of the annular steel veneer, the main body can be manufactured by the press working in one step. Further, since at least both surfaces of the main body are covered with the reinforcing resin, the mechanical strength of the main body can be improved, and as a result, the thickness of the main body can be reduced and the weight can be reduced.

[0010]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1A and 1B are views showing a flexible joint J according to an embodiment of the present invention. FIG. 1A is a partially omitted side view, and FIG. 1B is a view taken along the line BB of FIG. Referring to FIG. 1, the flexible joint J of this embodiment includes an annular main body 10. The main body 10 is composed of a single plate made of steel such as carbon steel, and has a through hole 11 formed in the center for penetrating the centering portions of the drive-side and driven-side rotating shafts (not shown).

On the same circumference of the main body 10, a fitting hole 12a having a boss portion a protruding to one side surface side (left side in FIG. 1B) and another side surface side (right side in FIG. 1B). ) The fitting holes 12b having the boss portions b 1 projecting in) are alternately formed at regular intervals. These fitting holes 12a and 12b are for fitting and holding the first and second elastic connecting members 14a and 14b, respectively, which constitute the group of elastic connecting means 14. The through hole 11, the boss portions a and b, and the fitting holes 12a and 12b are formed together when the main body 10 is manufactured by press working.

The elastic connecting means 14 is held by the boss part a and is held by the first connecting member 14a connected to the rotating shaft facing the one side surface side, and the boss part b, and The second connecting member 14b is connected to the rotary shaft facing the side surface. The connecting members 14a and 14b are provided on the inner diameters of the bosses a and b, that is, on the outer diameter bushes a1 and b1 press-fitted and fixed in the fitting holes 12a and 12b, and on the inner peripheral sides of the outer diameter bushes a1 and b1. It is provided with inner diameter bushes a2 and b2 arranged concentrically, and rubber elastic bodies a3 and b3 cast between outer diameter bushes a1 and a2 and inner diameter bushes b1 and b2. Each of the bushes a1, a2, b1 and b2 is made of a steel collar.

The elastic bodies a3 and b3 are for elastically expanding and contracting by a predetermined amount to integrally connect the outer diameter bushes a1 and b1 and the inner diameter bushes a2 and b2, and in the present embodiment. In order to increase the amount of bending of the main body 10 in the circumferential direction, a pair of slits d1 and d2 extending in parallel with the center of each elastic coupling member 14a and 14b sandwiched therebetween are formed. The elastic connecting members 14a, 14b are press-fitted into the fitting holes 12a, 12b so that the slits d1, d2 are arranged parallel to the diameter of the main body 10 passing through the center of the elastic connecting means 14 during assembly. Has been done.

In the above-mentioned structure, both side surfaces and the outer peripheral surface of the main body 10 are covered with the reinforcing resin R. The reinforcing resin R is mainly for improving the mechanical strength of the main body 10, and preferably an injection molded product such as nylon 66 reinforced with glass fiber is adopted. According to the flexible joint J having the above-described structure, the insertion hole 11 is fitted to the boss portion a projecting to the one surface side while the centering portions of the drive-side and driven-side rotating shafts (not shown) are inserted. The rotating shaft of either the driving side or the driven side is connected to the inner diameter bush a2 of the first elastic connecting member 14a from one side surface side, and is fitted to the boss portion b projecting to the other side surface side. By connecting the other rotating shaft from the other side surface side to the inner diameter bush b2 of the second elastic connecting member 14b, the connection of both shafts is completed. When the drive-side rotating shaft is rotated, the torque is elastically transmitted to the main body 10 from the elastic connecting member 14a (14b) connecting the drive-side rotating shaft, and is further driven by the main body 10. The rotary shaft on the driven side is elastically connected via the elastic connecting member 14b (14a) connecting the rotary shaft on the side. The elastic bodies a3 and b3 of the elastic coupling members 14a and 14b dampen vibrations and impacts generated on both shafts.

Further, in this embodiment, since the reinforcing resin R covering the main body 10 can improve the mechanical strength of the main body 10, the thickness of the sheet metal member constituting the main body 10 is reduced and the weight is reduced. Can be planned. As a result, a steel plate having a relatively large mass can be used as the material of the main body, and as a result, the product can be manufactured at low cost.

Moreover, in this embodiment, since the main body 10 is made of the annular steel veneer, the main body 10 can be manufactured by the press working in one step, resulting in less man-hours than the conventional one. However, the manufacturing cost can be reduced. The above-mentioned embodiments are merely examples of preferred embodiments of the present invention, and the gist of the present invention is not limited to the above-mentioned embodiments.

It goes without saying that various design changes can be made within a range that does not change the gist of the present invention, such as molding the inner diameter of the main body 10 with the reinforcing resin R to the extent that the through hole 11 is not blocked. There is no end.

[0018]

[Effect of the device]

 As described above, according to the flexible joint of the present invention, the reinforcing resin covering the main body can improve the mechanical strength of the main body. Therefore, the wall thickness of the sheet metal member constituting the main body can be reduced and the weight can be reduced. Can be promoted. As a result, a steel plate having a relatively large mass can be used as the material of the main body, and as a result, the product can be manufactured at low cost.

Moreover, in the flexible joint of the present invention, since the main body is composed of the annular steel veneer, the main body can be manufactured by the press working in one step, resulting in less man-hours than before. It is possible to reduce the manufacturing cost.

[Brief description of drawings]

FIG. 1 shows a flexible joint according to one embodiment of the present invention, (A) is a partially cutaway side view,
(B) is a BB sectional view of (A).

[Explanation of symbols]

 J Flexible joint R Reinforcing resin 10 Main body 14 Elastic connecting means

Claims (1)

[Scope of utility model registration request] 1. A main body made of a disk-shaped metal plate material, and held in a plurality of circumferentially elastically deformable states,
A first elastic connecting member that is connected to the rotating shaft that faces one side of the main body; and a group of elastic connecting means that includes a second elastic connecting member that connects to the rotating shaft that faces the other side. In the flexible joint, the main body is composed of a single plate made of steel integrally provided with a boss portion for holding the elastic coupling means of the group, and at least both surfaces of the main body are covered with a reinforcing resin. A flexible joint that is characterized.