CN2213878Y

CN2213878Y - Integral expansion fixed bolt

Info

Publication number: CN2213878Y
Application number: CN 95204660
Authority: CN
Inventors: 万荣魁
Original assignee: MINDE ENTERPRISE CO Ltd
Current assignee: MINDE ENTERPRISE CO Ltd
Priority date: 1995-03-13
Filing date: 1995-03-13
Publication date: 1995-11-29
Anticipated expiration: 2005-03-13

Abstract

The utility model relates to an integral expansion fixed bolt composed of an outer cover, a cover ring, and a wedge, wherein, the cover ring is integrally molded, and a plurality of grooves are arranged around the cover ring; a flange is arranged on the top edge of the outer cover, and the bottom of the outer cover is the top which is clamped in the cover ring; the wedge is clamped at the bottom of the inner part of the cover ring, and screws are arranged in the wedge; a screw bolt passes the centre of the outer cover, the cover ring, and the wedge. When the components are arranged on the end of a pipe-shaped object after combined, the flange of the outer cover is butted on the top edge of the pipe-shaped object, and the screw bolt is screwed inwards, the wedge can be lifted to the inner part of the cover ring to press the inner wall of the cover ring to expand outwards to the inner wall of the pipe-shaped object so as to reach the purpose of fixation.

Description

Integral expansion fixed bolt

The utility model relates to a kind of integral type expansion fixed bolt, refers to a kind of fixed bolt that is used in the pipe end especially.

The present pipe that uses, in order to the open-ended device of sealed tube, it can be divided into several, common articles for use shown in Fig. 1 series, the elasticity ring type shown in Figure 1A, the formula of splaying shown in Figure 1B, starlike flanged type shown in Fig. 1 C, because its dysplasia causes disappearance and disadvantage when using, the elasticity ring type shown in Figure 1A:

1, after the long-term compressing of elastic ring, causes elastic fatigue.

2, two semicircle structures alignment really, otherwise application of force inequality.

3, two semicircle structures easily produce the situation of displacement inequality when expansion, influence fixed effect.

The formula of splaying shown in Figure 1B for another example:

1, the two really alignment of structure of splaying, otherwise application of force inequality.

2, two structures of splaying easily produce the situation of displacement inequality in when expansion, influence fixed effect.

3, two structure alignments of splaying are difficult for time-consuming, effort.

Starlike flanged type shown in Fig. 1 C for another example:

1, the weakness of its starlike flanged type structure, serious crooked and eccentric when locking, influence locking effect.

2, to the application of force inequality of tube wall, cause tube wall deformation.

And above-mentioned three has common shortcoming be:

1, in case promptly can't remake correction after deflection is installed.

2, the refitting of promptly can't dismantling again after the installation.

3, can't the elasticity adjustment to determine its fixed position.

4, to the of no help usefulness of pretending of pipe.

5, be local fixedly surface of contact, fixed effect is not good.

The purpose of this utility model, be to provide a kind of expansion fixed bolt of a kind of integral type of mainly forming by enclosing cover, bolt, the collar and chock, it not only can make the elasticity adjustment determining its fixed position, and simple to operate, easy to implement, thereby has solved the existing in prior technology problem.

The scheme that the utility model adopted is that it mainly is made up of enclosing cover, the collar and chock.Wherein enclosing cover is hollow shape, and the outer rim on its top is provided with flange; The collar is hollow tubular, is provided with several grooves around it, and the Lower Half of its inwall is provided with from top to bottom, has suitable gradient from inside to outside; And the rounded plate-like of chock, its outer rim from inside to outside, is provided with the inclined-plane with suitable gradient that can cooperate with the set gradient of the Lower Half of the collar from top to bottom, and its center is provided with screw portion.Run through a screw thread at the center of enclosing cover, the collar and chock and just consist of the utility model with the bolt that set screw section, chock center cooperates.

Even major advantage of the present utility model is still can remake correction after it installs deflection, the refitting of can dismantling again after the installation has strengthening action to pipe, does not have the misgivings of adjusting displacement, and fixed effect is good, and is simple in structure, easy to implement.

Fig. 1 is the stereoscopic figure of common articles for use.

Fig. 2 is an exploded perspective view of the present utility model.

Fig. 3 is a combination stereogram of the present utility model.

Fig. 4 is an embodiment's of the present utility model generalized section.

See also the exploded perspective view of Fig. 2 and the combination stereogram of Fig. 3.As shown in the figure, the utility model is mainly by an enclosing cover 1, one collar 2 and a chock 3 constitute, enclosing cover 1 is for being hollow tubular, the outer rim on its top is provided with flange 11, the collar 2 also is hollow tubular, its maximum inner diameter is identical with the maximum outside diameter of enclosing cover 1, around the collar 2, be provided with the groove 21 of plural number, the Lower Half 22 of its inwall is provided with from top to bottom, has suitable gradient from inside to outside, chock 3 is rounded plate-like, its outer rim 31 from top to bottom, be provided with the inclined-plane with suitable gradient that can cooperate from inside to outside with the Lower Half 22 set gradients of the aforementioned collar 2, its maximum outside diameter is less than the maximum inner diameter of the collar 2, its center is provided with screw section 32, again in enclosing cover 1, the collar 2, the bolt 4 that a screw thread 41 can cooperate with set screw section 32, chock 3 centers is run through at the center of chock 3, with bolt 4 by the outside to exterior and interior cover 1, behind the collar 2, its screw thread 41 of nationality screws togather with chock 3 again, can form combination outward appearance as shown in Figure 3.

Fig. 3 is that combination stereogram of the present utility model, Fig. 4 are embodiment's of the present utility model generalized section.

As shown in the figure, to be placed in pipe 5 ends behind the component compositions such as aforementioned enclosing cover 1, the collar 2, chock 3, bolt 4, the flange 11 of enclosing cover 1 just resists in the apical margin of pipe 5, when nationality bolt 4 inwardly screws togather, can be with the Promotion From Within of chock 3 to the collar 2, the inwall of oppressing the collar 2 is then outwards expanded it towards the inwall of pipe 5, can reach fixing purpose, not only operating procedure is simple, easy to use, especially the collar 2 designs of integral type can contact with pipe 5 holohedral forms, point of application of force is even, does not have disadvantage crooked, distortion extremely.

Therefore, above-mentioned only is preferred embodiment of the present utility model, be not in order to restriction the utility model, generally be versed in the professional workforce of this type of skill, enforcement according to the modification of being done in the described shape of following claim, structure, feature and the spiritual scope, variation etc. all should be included in the claim scope of the present utility model.

Claims

1, a kind of integral type expansion fixed bolt is characterized in that it comprises: an enclosing cover (1), and it is hollow tubular, and the outer rim on its top is provided with flange (11); One collar (2), it is hollow tubular, is provided with several grooves (21) around it, and the Lower Half of its inwall is provided with from top to bottom, has from inside to outside suitable gradient; The rounded plate-like of one chock (3), its outer rim is provided with the inclined-plane with suitable gradient that can cooperate with the set gradient of the Lower Half of the collar (2) from top to bottom, from inside to outside, its center is provided with screw section (32), runs through the bolt (4) that a screw thread can cooperate with set screw section, chock (3) center at the center of enclosing cover (1), the collar (2) and chock (3).

2, by the described integral type expansion of claim 1 fixed bolt, it is characterized in that the said collar (2), its maximum inner diameter is identical with the maximum outside diameter of enclosing cover (1).

3, by the described integral type expansion of claim 1 fixed bolt, it is characterized in that the maximum inner diameter of the maximum outside diameter of said chock (3) less than the collar.