JPS60151437A - Coupling - Google Patents

Abstract

PURPOSE:To shorten the whole length of a coupling itself as well as to obtain necessary torque by making an outer shell screw part rotationable using a spanner etc. by a method wherein the arrangement is composed such that a core screw part being inserted to the outer screw part interposing shock absorbing material. CONSTITUTION:In a core screw part 1, a taper is provided at the pointed end of a head 2 as well as plane parts 3 of triangular or more polygonal shape are provided outside of the head, and moreover a screw hole 5 is provided at a shaft part 4. The inside of an outer shell screw part 6 is made hollow, and a taper is provided at the pointed end of said hollow part 7, as well as the outside of it is made to the shape of hexagon or more polygonal parts, and suitable numbers of plane parts 8 and cutting parts 9 adjacent to said plane parts 8 are formed by cutting adequate places of said angular parts side, and a screw rod 10 is continuously connected protrudedly at the center part of the pointed end in the shaft direction. A shock absorbing part 11 is interposed between the hollow part 7 of the outer shell part 6 and the head 2 of the core screw part 1.

Description

[Detailed Description of the Invention] The present invention connects two objects at locations where shocks occur frequently, such as the reciprocating mechanism of an optical system such as an electrophotographic copying machine. It relates to the joints used to soften the impact when squeezing.

(Prior art) As shown in Fig. 1, the conventional 8R joint is a VCfli construction in which two rods 1 and 2 are connected in the axial direction in the U curve. Because it was, the total length of 7 was 1 screw cup.
, 2 and the shock absorbing section 3 that connects these sections makes it uncomfortably long, and since the shock absorbing section 3 is mainly made of rubber, it is difficult to move in the axial direction. On the other hand, it is unavoidable that instability remains in the connected state, and the tightening of the threaded rods 1 and 2 is not sufficiently tightened because the tightening portions are covered with loose @ri 3. There were times when I couldn't get enough torque.

(Objective of the Invention) The present invention has been made to eliminate the long time and π of the above-mentioned conventional jointing joint, and it is possible to shorten the overall length of the joint, and to provide sufficient tightening. The purpose of this invention is to provide a seam that provides torque and has a large cushioning effect.

(Structure of the Invention) For this purpose, the joint itself is composed of three members: a core threaded part made of metal, an outer shell threaded part, and a buffer part made of hard rubber or resin, and the core threaded part is attached to the outer shell threaded part. It is inserted into and connected to the threaded part via a buffer part in the middle, and a notch and a flat part are provided on the outer periphery of the outer shell threaded part, and a flat part is also provided on the outer periphery of the core threaded part. The flat surface of the core threaded portion is inserted into the notch to exert a spring effect when the core threaded portion is inserted into the outer threaded portion, and the flat surface of the outer periphery of the outer threaded portion is This is characterized in that it is tightened using a wrench or the like.

(Example) The present invention will be described in detail below based on an example shown in the drawings.

Fig. 1 cA) (B) is a left side view and a sectional front view showing an embodiment of the joint of the present invention, Fig. 2 (A) (Ill is the same,
Left side view and cross-sectional front view of the core screw part, Figure 3 (AlC
B+ is a left side view and a cross-sectional front view of the outer shell threaded portion.

In these figures, the core screw part 1 has a taper on the optical surface of the head 2, and has a triangular or larger flat part 3 on the outside thereof, and a shaft part 4 connected to the head 2. A screw hole 5 is provided from the center of the rear end to the tip of the head 2.

On the other hand, the outer shell threaded part 6 has a hollow shape on the inside, a taper is provided at the tip of the hollow part 7, and the outside has a hexagonal shape or more corners.
By cutting out appropriate places on the side of the corner, an appropriate number of flat parts 8.
. . . and adjacent thereto are cut portions 9 .

The buffer portion 11 is provided in the hollow portion T of the outer shell threaded portion 6, and the core threaded portion 1 is placed in the hollow portion 7.
When connected with the head 2 at the top and the side corners of the flat portion 3 inserted into the notches 6 of the outer shell threaded portion 6, the cushion is stacked. be. The inner core threaded portion 1 and the outer shell threaded portion 6 are made of metal or a similar hard material, and the buffer @ 11 is made of hard rubber, resin, or the like.

The present invention is constructed as described above. And now,
In order to use this to connect two objects in a place where shocks occur frequently, such as the reciprocating mechanism of an optical machine in an electrophotographic copying machine, etc., in order to reduce the shock, the screw of the core screw part 1 must be For example, a bolt or the like attached to one mechanism is screwed into the hole 5, and the outer shell threaded part 6, which has the inner core threaded part 1, is screwed into the other part using the threaded rod 10. Alternatively, it is sufficient to screw it together using a simple nut, etc., and in this way, one machine side and the other machine side that connects this VC can be connected to the threaded hole 5 of the core threaded part 1. The bolts and the like and the threaded rods 10 of the outer shell threaded portion 6 are connected in a line in the axial direction, and the core threaded portion 1 and the outer shell threaded portion 6 are connected to the hollow portion of the outer shell threaded portion 6. The outer shell thread part 6 is connected to the inner core thread 1 through a notch part 9 provided on the outside thereof.
Since the shape of the corner of the outer shell 2 is such that a gap with an appropriate margin is formed between the two, the outer shell threaded part 6 itself also has a spring effect, which is the same as described above. By combining with the buffering effect, even if one root side Vc impact occurs, this impact will be V, before being transmitted to the other tissue.
Since the convergence and relaxation will occur, this other machine side will be
In addition, the core threaded portion 1 and the outer shell threaded portion 6 into which it is inserted will not be damaged by impact.
When torque is desired for the entire body, the flat portion 8 of the outer shell threaded portion 6 may be used and tightened with a spanner or the like.

(Effects of the Invention) As described above, the present invention Fi is made and used in (1). Buffer section 1
Consisting of three members with 1 l-1fJTj? lz is configured such that vc is located 1° in the cavity T of the outer shell threaded part 6, so the total length of the joint itself can be made very short, and also if you want it to have torque. Sometimes, this can be achieved by tightening with a spanner or the like using the flat part 8 on the side of the corner of the outer shell screw part 6;
By providing notches 9 at appropriate locations on the outside of the outer threaded portion 6, a spring effect is produced in the outer threaded portion 6 itself, and this synergistic effect with the buffer portion 11 further increases the buffering effect. It also has the effect of being able to be made into something.

The scope of use of the present invention is not limited to the above-mentioned electrophotographic copying machine, but can be used in a wide range of applications such as mounting small motors, prowers, valves, etc., and the cap nut 5 provided on the core threaded portion 1 can be used in a wide range of applications. Needless to say, it can be a threaded rod as well.

[Brief explanation of the drawing]

Fig. 1 (Al (Bl) is a left side view and a sectional front view showing an example of the joint of the present invention, Fig. 2 (AJ (B+ is the same, a left side view and a sectional front view of the core screw part, Figure 3 (A)
(Bl is a left side view and a cross-sectional front view of the outer shell screw part in the same figure, and FIG. 4 (Al (B) is a left side view and a cross-sectional front view showing another example in the same figure. 1... ... Core screw, 2 ... Head, 3 ...
・Flat part, 4... Shaft part, 5... Screw hole, 6...
...Outer shell part, 7...Cavity part, 8...Plane part, 9...Notch part, 10...Threaded rod, 11...
...Buffer section. Patent applicant Fuji Xerox Co., Ltd.

Claims (1)

[Claims] The joint itself has a core threaded part that has a polygonal head at the tip and a threaded rod etc. can be attached to the center part of the rear end, and the core threaded part is inserted into the inner side from the rear end to connect. It has a polygonal shape on the outside and has a notch in the appropriate place for inserting the corner of the head of the core screw part, and a threaded rod etc. is protruded from the center of the tip. It is composed of three parts: an outer shell threaded part and a buffer part that is interposed between them when the core threaded part is inserted into the cavity of the outer shell threaded part and connected, and the total length of the joint itself is A joint characterized in that the required torque can be obtained by shortening the length of the outer shell threaded portion and rotating the outer side of the outer shell threaded portion with a spanner or the like when necessary.