CN208057636U - Multifunctional expanded pipe - Google Patents

Abstract

The utility model discloses a kind of multifunctional expanded pipes, including expansion tube body, and expansion tube body includes head, root and interlude；It expands and is equipped with the central through hole through head, interlude and root in tube body, interlude is equipped with even number dilatation joint, forms expansion piece between two neighboring dilatation joint, and the inner wall of expansion piece is equipped with radially-inwardly raised expansion rib；In adjacent two panels expansion piece, wherein being equipped at intervals with back-off tooth on the lateral wall of a piece of expansion piece, convex ribs are equipped at intervals on the lateral wall of another expansion piece.By setting through head, the central through hole of interlude and root, and form expansion piece in interlude setting dilatation joint, expansion rib, back-off tooth and convex ribs are respectively set inside and outside expansion piece, in this way, when screw rod or screw are shot, expansion piece is set to expand outward with expansion rib interaction, increase dilatancy amount, and then increasing friction force, and back-off tooth and convex ribs are combined, increase anti-pulling ability.

Description

Multifunctional expanded pipe

Technical field

The utility model is related to a kind of fasteners, are specifically a kind of multifunctional expanded pipe.

Background technology

Plastic dowel sleeve is used to fasten the connection and installation of various middle group pendant articles, is matched with self-tapping screw. When plastic dowel sleeve is installed, pre-manufactured hole is drilled out on wall according to plastic expansion pipe size, outside the size and expansion tube of pre-manufactured hole Diameter one is to the length of pre-manufactured hole is usually than plastic expansion pipe range 5mm-7mm.Then mating self-tapping screw is put into plastic expansion In the fixed section of pipe, it is the thickness for needing to hang screens, self-tapping screw that the length of self-tapping screw, which is that the length of plastic dowel sleeve adds, Outer diameter it is consistent with the internal diameter of plastic dowel sleeve inlet.Then the swollen of plastic dowel sleeve is shot into tapping compressing using tool Swollen section, makes expansion arc spreading and fitted closely with the hole wall of pre-manufactured hole on wall, reach required anchor force.

Although existing plastic dowel sleeve disclosure satisfy that requirement to a certain extent, there are still anti-pulling abilities Insufficient problem.Under extraneous larger drawing force effect, it is easy to be drawn out.

Invention content

In view of this, the purpose of this utility model is to provide a kind of multifunctional expanded pipe, anti-pulling can be effectively improved Ability.

In order to achieve the above objectives, the utility model provides the following technical solutions：

A kind of multifunctional expanded pipe, including expansion tube body, the expansion tube body include the head for being located at front end, are located at The root of rear end and the interlude between the head and root；

The central through hole through the head, interlude and root is equipped in the expansion tube body, on the interlude Equipped with even number dilatation joint, expansion piece is formed between the two neighboring dilatation joint, the inner wall of the expansion piece is equipped with radial direction Inwardly protruded expansion rib；

In expansion piece described in adjacent two panels, wherein back-off tooth is equipped at intervals on the lateral wall of a piece of expansion piece, it is another It is equipped at intervals with convex ribs on the lateral wall of expansion piece described in piece.

Further, the radial thickness of the expansion rib is that intermediate small both ends are big.

Further, the intersection curve between the vertical plane of the expansion tube body and the top surface of the back-off tooth be with The coaxial camber line of the expansion tube body.

Further, the convex ribs include two convex ribs items of intersection, and the width between two convex ribs items is along described The direction that the head is directed toward in root is gradually reduced.

Further, on the inner wall of the central through hole rotation knitted construction is correspondingly provided with the head.

Further, the rotation knitted construction includes that annular is uniformly arranged the rectangular channel on the central through hole inner wall, Groove is equipped between the two neighboring rectangular channel, the radial depth of the rectangular channel is more than the radial depth of the groove.

Further, the periphery wall on the head is equipped with head and is buckled to tooth.

Further, the root is equipped with the counterbore coaxial with the central through hole, the internal diameter of the counterbore be more than it is described in The internal diameter of heart through-hole.

Further, the lateral wall of the root is equipped with the reinforcing rib being located in the radial direction.

Further, the reinforcing rib includes the big reinforcing rib of two panels that is uniformly arranged of annular, between big reinforcing rib described in two panels Equipped with small reinforcing rib, the small reinforcing rib is vertical with the big reinforcing rib.

The beneficial effects of the utility model are：

The multifunctional expanded pipe of the utility model, by setting through head, the central through hole of interlude and root, and Interlude is arranged dilatation joint and forms expansion piece, expansion rib, back-off tooth and convex ribs is respectively set inside and outside expansion piece, in this way, working as spiral shell When bar or screw are shot, so that expansion piece is expanded outward with expansion rib interaction, increase dilatancy amount, and then increase friction Power, and back-off tooth and convex ribs are combined, increase anti-pulling ability.

Description of the drawings

In order to keep the purpose of this utility model, technical solution and advantageous effect clearer, the utility model provides as follows Attached drawing illustrates：

Fig. 1 is the structural schematic diagram of the multifunctional expanded pipe embodiment of the utility model；

Fig. 2 is the left view of Fig. 1；

Fig. 3 is the full sectional view of the multifunctional expanded pipe of the present embodiment；

Fig. 4 is the vertical view of Fig. 1.

Specific implementation mode

The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art The utility model can be better understood from and can be practiced, but illustrated embodiment is not as the restriction to the utility model.

As shown in Figure 1, for the structural schematic diagram of the multifunctional expanded pipe embodiment of the utility model.The present embodiment it is multi-functional Expansion tube, including expansion tube body, expansion tube body include the head 1 for being located at front end, positioned at the root 2 of rear end and positioned at head Interlude 3 between 1 and root 2.It is equipped in head 1, interlude 3 and root 2 in the expansion tube body of the present embodiment Heart through-hole 4, interlude 3 are equipped with even number dilatation joint 5, form expansion piece 6 between two neighboring dilatation joint 5, expansion piece 6 it is interior Wall is equipped with radially-inwardly raised expansion rib 7, and the radial thickness of the expansion rib 7 of the present embodiment is that intermediate small both ends are big.It is adjacent In two panels expansion piece 6, wherein being equipped at intervals with back-off tooth 8, the lateral wall of another expansion piece 6 on the lateral wall of a piece of expansion piece 6 On be equipped at intervals with convex ribs 9.

Further, with the vertical plane of expansion tube body and the intersection curve being buckled between the top surface of tooth 8 it is and expansion tube The coaxial camber line of ontology is buckled to tooth 8 and is arc-shaped, compared with the back-off tooth 8 of other structures, the expansion area with bigger. The convex ribs 9 of the present embodiment include two convex ribs items of intersection, and the width between two convex ribs items is directed toward head 1 along root 2 Direction is gradually reduced.

Further, on the inner wall of central through hole 4 rotation knitted construction is correspondingly provided with head 1.The rotation of the present embodiment is beaten Junction structure includes that annular is uniformly arranged the rectangular channel 10 on central through hole inner wall, and groove is equipped between two neighboring rectangular channel 10 11, the radial depth of rectangular channel 10 is more than the radial depth of groove 11.The periphery wall on the head 1 of the present embodiment falls equipped with head Buckle teeth 15.

Further, the root 2 of the present embodiment is equipped with the counterbore 12 coaxial with central through hole 4, during the internal diameter of counterbore 12 is more than The internal diameter of heart through-hole 4.Specifically, the lateral wall of root 2 is equipped with the reinforcing rib being located in the radial direction.The reinforcement of the present embodiment Muscle includes the big reinforcing rib 13 of two panels that is uniformly arranged of annular, and small reinforcing rib 14, small reinforcing rib are equipped between the big reinforcing rib of two panels 13 14 is vertical with big reinforcing rib 13.Reinforcing rib can not only increase structural strength, and radial setting is also prevented from expansion tube sheet Body skids.

The multifunctional expanded pipe of the present embodiment, by setting through head, the central through hole of interlude and root, and in Between section setting dilatation joint form expansion piece, expansion rib, back-off tooth and convex ribs are respectively set inside and outside expansion piece, in this way, working as screw rod Or screw makes expansion piece expand outward, increases dilatancy amount, and then increasing friction force when shooting with expansion rib interaction, And back-off tooth and convex ribs are combined, increase anti-pulling ability.

Embodiment described above is only the preferred embodiment lifted to absolutely prove the utility model, the utility model Protection domain it is without being limited thereto.Those skilled in the art on the basis of the utility model made by equivalent substitute or change It changes, both is within the protection scope of the present invention.The scope of protection of the utility model is subject to claims.

Claims (10)

1. a kind of multifunctional expanded pipe, it is characterised in that：Including expanding tube body, the expansion tube body includes being located at front end Head（1）, root positioned at rear end（2）With positioned at the head（1）With root（2）Between interlude（3）；

It is equipped in the expansion tube body and runs through the head（1）, interlude（3）The root and（2）Central through hole（4）, described Interlude（3）It is equipped with even number dilatation joint（5）, the two neighboring dilatation joint（5）Between form expansion piece（6）, described swollen Swollen（6）Inner wall be equipped with radially-inwardly raised expansion rib（7）；

Expansion piece described in adjacent two panels（6）In, wherein a piece of expansion piece（6）Lateral wall on be equipped at intervals with back-off tooth（8）, Another expansion piece（6）Lateral wall on be equipped at intervals with convex ribs（9）.

2. multifunctional expanded pipe according to claim 1, it is characterised in that：The expansion rib（7）Radial thickness be Between small both ends it is big.

3. multifunctional expanded pipe according to claim 1, it is characterised in that：With the vertical plane of the expansion tube body with The back-off tooth（8）Top surface between intersection curve be and the coaxial camber line of the expansion tube body.

4. multifunctional expanded pipe according to claim 1, it is characterised in that：The convex ribs（9）Two including intersection convex Rib, the width between two convex ribs items is along the root（2）It is directed toward the head（1）Direction be gradually reduced.

5. according to the multifunctional expanded pipe of claim 1-4 any one of them, it is characterised in that：The central through hole（4）It is interior On wall with the head（1）It is correspondingly provided with rotation knitted construction.

6. multifunctional expanded pipe according to claim 5, it is characterised in that：The rotation knitted construction includes that annular is uniformly distributed Rectangular channel on the central through hole inner wall is set（10）, the two neighboring rectangular channel（10）Between be equipped with groove（11）, The rectangular channel（10）Radial depth be more than the groove（11）Radial depth.

7. multifunctional expanded pipe according to claim 5, it is characterised in that：The periphery wall on the head falls equipped with head Buckle teeth（15）.

8. according to the multifunctional expanded pipe of claim 1-4 any one of them, it is characterised in that：The root be equipped with it is described in Heart through-hole（4）Coaxial counterbore（12）, the counterbore（12）Internal diameter be more than the central through hole（4）Internal diameter.

9. according to the multifunctional expanded pipe of claim 1-4 any one of them, it is characterised in that：It is set on the lateral wall of the root Have positioned at reinforcing rib in the radial direction.

10. multifunctional expanded pipe according to claim 9, it is characterised in that：The reinforcing rib is uniformly arranged including annular The big reinforcing rib of two panels（13）, big reinforcing rib described in two panels（13）Between be equipped with small reinforcing rib（14）, the small reinforcing rib（14） With the big reinforcing rib（13）Vertically.