JPH0512885U - Universal fitting - Google Patents

Abstract

(57) [Summary] [Purpose] A universal joint is configured as an attachment of a general joint, and by attaching and detaching it, it can be configured as a general joint, a separation prevention joint, and an earthquake resistant joint. [Structure] A housing 11 including a socket outer cover 12 and a socket outer cover 13 that are fitted onto the socket 1 and the socket 2 of the pipe joint,
After fitting the housing 11 onto the pipe joint,
Using the set bolt 19 that penetrates the outer jacket wall of 12, the housing 11 is positioned by pressing the fixing ring 14 against the outer surface of the receiving portion, and the set bolt 20 that penetrates the outer wall of the insertion outer jacket 13
Locking groove formed on the outside of the socket using
16 is pressed and engaged to prevent the insertion portion 2 from coming off.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a universal joint including an attachment for a general joint in which a pipe receiving portion and a pipe inserting portion are joined.

[0002]

[Prior Art]

 The structure of a conventional general pipe joint is as shown in FIG. In FIG. 3, reference numeral 1 is a pipe receiving portion, 2 is a pipe inserting portion, 3 is a packing interposed between the receiving portion 1 and the inserting portion 2, and the packing 3 is a receiving portion of the receiving portion 1. It is pressed between the inner peripheral surface of the annular groove 4 formed on the inner surface and the outer peripheral surface of the insertion opening 2 to perform crimping in the pipe joint portion and sealing to the inside of the pipe.

[0003]

[Problems to be solved by the device]

 When a pipe separation prevention mechanism or a seismic resistant mechanism is added to the general joint as described above, a set bolt that normally penetrates the socket 1 is provided and inserted into the socket 1 of the socket 2. A locking groove is provided on the outer periphery of the locked portion, and the lock ring that engages with this locking groove is pressed by the set ring to prevent separation, or the locking groove is configured to be longer than the lock ring width. I was able to obtain the expansion and contraction allowance of the insertion slot 2 for earthquake resistance. In this way, it was necessary to make further modifications to the general joint in order to make it a separation prevention joint or seismic resistant joint.

The present invention solves the above-mentioned problems. By providing an attachment for a general joint, it is possible to use the general joint as it is by attaching and detaching the attachment. The purpose of the present invention is to provide a universal joint that can be configured as well.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a universal joint of the present invention has a housing consisting of a socket outer portion and a socket outer portion that are externally fitted to the socket portion and the socket portion of the pipe joint portion. Provided on the inner surfaces of the outer cover part and the insertion port outer cover part are a receiving port outer jacket annular groove and an insertion port outer cover annular groove into which the fixing ring and the lock ring are fitted. A set bolt for pressing the fixed ring and the lock ring, which penetrate through the wall and inserted into the respective annular grooves, to the pipe joint side is provided, and the fixed ring and the lock ring are pressed by these set bolts, and the outer surface of the receptacle part is provided. In addition, it is adapted to be engaged with the insertion port locking groove.

[0006]

[Action]

 With the above structure, first, the fixing ring and the lock ring are fitted into the respective annular grooves of the housing and the outer jacket of the housing, and the housing is inserted into the housing through the outer jacket of the housing. After fitting the insertion port into the receiving port, move the housing to fit the receiving port over the receiving port, and then use the set bolt to press the fixing ring to the outer surface of the receiving port. The flange at the rear end of the socket is sandwiched between the inner surface of the housing and the fixing ring to position the housing, and the lock ring is engaged with the locking groove of the insertion slot to prevent disengagement or to perform earthquake-proof operation. .. Therefore, when this universal joint is not used, it can be used as it is as a general joint, and by using the universal joint as this general joint, it is only necessary to add a locking groove to the insertion port and the separation prevention joint can be used. Or it can be configured as an earthquake-proof joint.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of an essential part of a universal joint when it is applied as a separation prevention joint according to an embodiment of the present invention, and FIG. 2 is a universal joint when it is applied as a seismic resistant joint according to another embodiment of the present invention. FIG.

In FIG. 1, 1 is a receiving portion, 2 is an insertion portion, 3 is packing, and 4 is an annular groove, which is the same as that of the general joint of FIG. Reference numeral 11 denotes a universal joint housing, which comprises a socket outer jacket portion 12 and a socket outer shell portion 13 which can be externally fitted to the socket portion 1 and the socket portion 2 in the pipe joint portion. Is provided with a socket outer annular groove 15 into which a fixing ring 14 for engaging the flange 1a formed on the outer periphery of the rear end of the socket 1 and ensuring the positioning of the housing 11 is fitted, and On the inner surface of the insertion opening mantle 13, a lock ring 17 that engages with a locking groove 16 formed on the outer periphery of the insertion opening 2 outside the rear end of the receiving opening 1 is inserted. 18 are provided.

Further, fixing ring set bolts 19 penetrating the outer jacket wall and passing through the annular groove 15 and reaching the fixing ring 14 are provided at a plurality of positions in the circumferential direction of the receptacle outer jacket portion 12, and the insertion socket outer jacket portion 13 is provided. Lock ring set bolts 20 which penetrate the outer wall and reach the lock ring through the annular groove 18 are provided at a plurality of positions in the circumferential direction.

Further, the surface extending between the inner surface of the large-diameter socket outer jacket portion 12 and the inner surface of the small-diameter outer jacket portion 13 is a vertical surface 21 perpendicular to the axial direction of the outer shell portions 12, 13. When the housing 11 is fitted into the pipe joint portion, the vertical surface 21 is configured to substantially follow the rear end surface 1b of the receiving portion. The vertical surface 21 and the fixing ring 14 sandwich the flange portion 1a. The positioning of the housing 11 is made even more secure. Further, the width of the locking groove 16 is long enough to lock the locking ring 17, thereby preventing disengagement at the pipe joint portion. Reference numeral 22 is a rib that protects the set bolts 19 and 20.

Next, a mounting operation of the universal joint having the above configuration will be described. First, the fixing ring 14 and the lock ring 17 are fitted in the receiving jacket annular groove 15 and the insertion jacket annular groove 18 of the housing 11, and then the housing 11 is inserted into the inserting section 2 through the inserting jacket section 13. deep. Next, the insertion part 2 is joined to the receiving part 1 via the packing 3, and then the housing 11 is moved to the receiving part 1 side so that the vertical surface 21 of the inner surface of the housing 11 makes the rear end face 1b of the receiving part 1b. Until it comes into contact with, the socket outer cover 12 is fitted onto the socket 1.

Next, the fixing ring 14 is pressed by using the set bolt 19, and the flange 1a of the socket 1 is sandwiched between the fixing ring 14 and the vertical surface 21, and the housing 11 is attached to the pipe joint portion. Position. Further, the lock ring 17 is pressed by using the set bolt 20 to be engaged with the locking groove 16. As a result, the universal joint acts as a separation preventing joint, and the separation of the insertion opening 2 from the receiving opening 1 is reliably prevented.

Next, in FIG. 2, 31 is a housing, 32 is a socket outer jacket, 33 is a socket outer jacket, 34 is a fixing ring, 35 is a socket outer annular groove, 37 is a lock ring, and 38 is a socket outer jacket. An annular groove, 39 and 40 are set bolts, 41 is a vertical surface, and 42 is a rib, which are equivalent to those in FIG. Reference numeral 36 is a locking groove formed in the insertion opening 2, the width of which is wider than the width of the lock ring 37 engaged with the locking groove, and in this respect, the locking groove shown in FIG. Different from 16. As a result, it is characterized as a seismic resistant joint, and has a larger expansion and contraction allowance for the insertion opening than the detachment prevention joint.

[0014]

[Effect of the device]

 As described above, according to the present invention, by attaching and detaching the universal joint as an attachment, it is possible to make common to the general joint or the pipe, and to make only the presence or absence and the size of the engaging groove of the insertion portion different. Therefore, it can also be applied to separation prevention joints and seismic joints.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts of a universal joint when applied as a separation prevention joint according to an embodiment of the present invention.

FIG. 2 is a sectional view of an essential part of a universal joint when it is applied as a seismic resistant joint of another embodiment of the present invention.

FIG. 3 is a cross-sectional view of an essential part showing the configuration of a general joint.

[Explanation of symbols]

 1 Receptacle 2 Receptacle 11,31 Housing 12,32 Receptacle mantle 13,33 Receptacle mantle 14,34 Fixing ring 15,35 Receptacle mantle annular groove 16,36 Locking groove 17,37 Lock ring 18,38 Outlet mantle annular groove 19,20,39,40 Set bolt

Claims (1)

[Scope of utility model registration request] 1. A housing having a socket outer cover part and a socket outer cover part that are externally fitted to the socket part and the insert socket part of the pipe joint part, and the inner surface of the socket outer cover part and the socket outer cover part is provided.
Receiving port outer annular groove into which a fixing ring that engages with the outer surface of the receiving port and which positions the housing fits, and insertion port outer annular groove into which a lock ring that fits into a locking groove formed on the outer surface of the loading port fits And the fixing ring and the lock ring, which penetrate through the outer jacket wall and are fitted into the respective annular grooves, are pressed at a plurality of positions in the circumferential direction of the receptacle outer shell portion and the insertion slot outer sheath portion to press the outer surface and the insertion surface of the receptacle portion. A universal joint characterized in that a set bolt for pressing the locking groove at the mouth is provided.