CN1299027A

CN1299027A - Universal joint

Info

Publication number: CN1299027A
Application number: CN00106418A
Authority: CN
Inventors: 三浦徹郎
Original assignee: TOZEN SANGYO KK
Current assignee: TOZEN SANGYO KK
Priority date: 1999-12-07
Filing date: 2000-04-06
Publication date: 2001-06-13
Anticipated expiration: 2020-04-06
Also published as: JP2001165369A; CN1176311C; KR20010066748A; HK1035769A1; ID28581A; MY135435A; TW438946B

Abstract

To provide a universal pipe joint that helps reduce the load of difficult, time-consuming machining work, and that neither makes the outer shape big nor adds to the weight. Revolving balls are slidably fitted into the both ends of a single pipe found on a universal pipe. A material to support a spherical surface comprised of flexible materials and, etc., is fitted onto an outer surface of the revolving balls, and the revolving balls are put into the dents on the spherical surface of the casings. The outer surface of the revolving balls and the inner surface of the dents on the spherical surface of the casings are in slidable contact with each other.

Description

Universal joint

The present invention relates to a kind of universal joint that is used under ground piping.

When at the graphic memory that is about to the embedding pipeline that water arranged during in the discrepancy in elevation, perhaps when after a Plane Installation pipe-line system, because surface subsidence, earthquake or some other reasons be when this produces certain discrepancy in elevation in the plane of embedding pipe-line system, to preventing underground piping system on the under ground piping and in underground piping system, connecting needed other equipment strong demand that is damaged at the load action on the bending direction by preventing.

As a kind of universal joint that satisfies above-mentioned social demand, wherein be provided with a unit pipe, in the rotating part at these unit pipe two ends, has Metal Ball, and the heart has an extensile device therein, the unit pipe of another kind of type perhaps is provided, have Metal Ball at these unit pipe two ends, but the heart does not have extensile device therein, this pipe can slide through Metal Ball, has flexibility to guarantee joint.

Because above-mentioned universal joint has Metal Ball at the two ends of its unit pipe, to guarantee at rotating part accurately and rotation stably and sealing completely therefore, needing higher precision so that engage at rotating part, for this purpose, need very trouble and difficult machining.And when the center in unit pipe provided extensile mechanism, along with its size of increase of weight also becomes greatly, this was disadvantageous.

An object of the present invention is to provide a kind of universal joint, this universal joint can solve the problem of the universal joint existence of prior art, and can also reduce the difficulty in machining, meanwhile can not cause the increase of size and weight.

For achieving the above object, a universal joint according to the present invention is characterised in that rotating sphere is slidably and can be contained in the two ends of a unit pipe with engaging, a spherical bearing body of being made by a kind of flexible material or similar material can be mounted in engagement with on the outer surface of rotating sphere, rotating sphere can insert in the bulb-type recessed part of a housing with engaging, and the internal surface of the outer surface of rotating sphere and bulb-type recessed part contacts with each other slidably.

The invention is characterized in that for example make by natural rubber, synthetic rubber or synthetic resin by a kind of material for the spherical bearing body.

The invention is characterized in that an annular recess is arranged on the unit pipe, stop ring removably and can be mounted in engagement with in this circular trough, and this stop ring has prevented rotating sphere moving to the core of unit pipe.

The invention is characterized in that a groove in the axial direction is positioned on the internal surface of rotating sphere, the stop member that is fixed on an end of a unit pipe embeds in the groove slidably, and this stop member has prevented rotating sphere moving to the outside of unit pipe.

Of the present invention another is characterised in that a unit pipe is divided into the plurality of sub unit pipe, a groove in the axial direction is positioned on the internal surface of a unit pipe, the belt projection that is connected to an end of another unit pipe embeds in the groove slidably, projection engages with stop member in the open part that is contained in groove, in case the separation between the stop element pipe, and projection also embeds an end portion of groove, so that make each unit pipe keep shortest length.

Fig. 1 is a vertical front view of the first embodiment of the present invention;

Fig. 2 is the longitudinal cross-section view of an amplification, the part that its expression is centered on by the line among Fig. 12;

Fig. 3 is a vertical front view, and it is illustrated in the hinged each other state of different tube bodies on the identical central line; With

Fig. 4 is a vertical front view of the second embodiment of the present invention.

Fig. 1 to Fig. 3 represents the first embodiment of the present invention, in these figure, unit pipe of reference number 1 expression, rotating sphere 2 is slidably engaged in the two ends of unit pipe 1, a stop ring 3 removably embeds in the circular trough of unit pipe 1, and this stop ring can prevent that rotating sphere 2 from moving to the middle part of unit pipe 1 like this.Groove 4 in the axial direction is positioned on the internal surface of rotating sphere 2, and the stop member 6 that is connected with the end of unit pipe 1 embeds in the groove 4, and this stop member 6 utilizes clamping screw 5 to be fixed on the unit pipe 1.A spherical bearing body 7 can be placed on the outer surface of rotor 2 with embedding, and this spherical bearing body 7 is made by for example natural rubber, synthetic rubber, synthetic resin and other soft materials.And, rotating sphere 2 can insert in the bulb-type recessed part 11 of housing 10 with engaging, the internal surface of the bulb-type recessed part 11 of the outer surface of rotating sphere 2 and housing 10 contacts with each other slidably, and above-mentioned two surfaces are by 12 supportings of a supporting ring in the open part that embeds housing 10.Reference number 8 and 9 expression seal rings, the hardness of spherical bearing body 7 is the IRHD50 in the international rubber hardness degree standard or bigger preferably.

When using above-mentioned universal joint to connect pipeline, two tube bodies to be connected are positioned at the both sides of universal joint, and the flange of tube body is connected respectively on the flange 14 of housing 10 of universal joint, and tube body is connected with unit pipe 1 then, thereby finishes pipe laying work.Only the flange with flange 14 and the tube body that will be connected connects the above-mentioned pipe laying work of just can finishing, and therefore constructs very easy and can finish at short notice.

According to slit between the flange of the tube body that will connect, housing 10 can move in or out along unit pipe 1.In this step, the stop member 6 of unit pipe 1 slides in the groove 4 of rotating sphere 2.Fig. 1 and 2 represents the slit minimum, and in this case, the outward edge of rotating sphere engages with stop ring 3.When the slit was maximum, the inward flange of groove 4 engaged with rotating sphere 6.

Fig. 3 represent when the axis B-B of the axis A-A of two tube bodies that will connect each other and unit pipe 1 also be that the axis B-B of rotating sphere 2 intersects and at an angle alpha the time, the connection between tube body.In this case, rotating sphere 2 is around center c rotation, and the outer surface of the spherical bearing body 7 of rotating sphere 2 slides on the internal surface of the bulb-type recessed part 11 of housing 10, therefore, and required angle of rotating sphere 2 rotations.Like this, pipe laying work is very easy, and can finish in the extremely short time.In this embodiment, the angle [alpha] between unit pipe 1 and housing 10 is 15 degree, but the invention is not restricted to this value.

Fig. 4 illustrates one second embodiment of the present invention, owing to comprise the some parts identical in this embodiment with first embodiment, like this for identical part, the reference number that uses is identical with employed reference number in first embodiment's the description, it is described omission, only describe different parts below.In this embodiment, unit pipe 1 is divided into some (being two in the present embodiment) subelement pipe 1-1,1-2, and a sub-unit pipe 1-2 has a groove 15, this groove 15 is positioned on the internal surface vertically, and an annular protruding portion 16 that is arranged on the end of another subelement pipe 1-1 embeds grooves 15.This projection 16 engages with stop member 17, this stop member 17 is contained on the open part of groove 15, be separated to prevent two sub-unit pipe 1-1,1-2, and projection 16 also engages with an end portion of groove 15, thereby make two sub-unit pipe 1-1,1-2 keeps shortest length.

The invention provides aforesaid universal joint, in this universal joint, rotating sphere can be placed on the two ends of a unit pipe with engaging, a spherical bearing body of being made by soft material can be placed on the outer surface of rotating sphere with engaging, rotating sphere can insert in the bulb-type recessed part of housing with engaging, the outer surface of rotating sphere contacts with the internal surface of the bulb-type recessed part of housing slidably, like this, need not increase the mach difficulty that size and weight can reduce trouble.The elasticity substantially of universal joint can also adapt to because the variation that surface subsidence causes; Therefore it also has such advantage, and promptly it can prevent the underground piping system breakage of available water supply, and, by using flexible material also can guarantee mach stabilized accuracy at rotating part and realizing batch process.

Claims

1. universal joint, wherein rotating sphere is the two ends that can be contained in a unit pipe with engaging, the spherical bearing body of being made by a kind of flexible material can be mounted in engagement with on the outer surface of rotating sphere, rotating sphere can insert in the bulb-type recessed part of a housing with engaging, and the internal surface of an outer surface of rotating sphere and a bulb-type recessed part contacts with each other slidably.

2. universal joint as claimed in claim 1 is characterized in that for example make by natural rubber, synthetic rubber or synthetic resin by a kind of material for the spherical bearing body.

3. universal joint as claimed in claim 1 or 2 is characterized in that an annular recess is positioned on the unit pipe, a stop ring removably embeds in this circular trough, and this stop ring has prevented rotating sphere moving to a core of unit pipe.

4. as arbitrary described universal joint in the claim 1 to 3, it is characterized in that a groove in the axial direction is positioned on the internal surface of rotating sphere, the stop member that is fixed on an end of unit pipe embeds in the groove, and this stop member has prevented rotating sphere moving to the unit pipe outside.

5. universal joint as claimed in claim 1, it is characterized in that described unit pipe is divided into the plurality of sub unit pipe, a groove in the axial direction is positioned on the internal surface of a sub-unit pipe, a belt projection that is connected to an end of another subelement pipe is embedded in this groove, projection engages with stop member in the open part that is contained in recessed portion, to prevent the separation between the subelement pipe, and projection also engages with a end portion at groove, holds shortest length so that subelement is guaranteed.