CN102044852B

CN102044852B - Wire-protecting sleeve joint

Info

Publication number: CN102044852B
Application number: CN 201010147797
Authority: CN
Inventors: 何平
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-02-01
Filing date: 2010-03-16
Publication date: 2013-03-27
Anticipated expiration: 2030-03-16
Also published as: CN201708498U; CN103107499A; CN102044852A

Abstract

The invention relates to a wire-protecting sleeve joint, belonging to the technical field of wire cable adaptors. The wire-protecting sleeve joint comprises a hollow joint body provided with an elbow, wherein the inner cavity of the elbow of the joint body is provided with a wheel axle and a roller wheel sheathed on the wheel axle. Since the inner cavity of the elbow of the wire-protecting sleeve joint is provided with the roller wheel, a wire cable can abut against the circumferential surface of the roller wheel when penetrating through the inner cavity of the elbow, and the roller wheel can be driven to rotate when the wire cable is pulled, so that rolling friction with small friction force is formed between the wire cable and the roller wheel; and thus, the wire cable can easily change in directions to pass through the wire-protecting sleeve joint, thereby providing great convenience for penetrating and arranging the wire cable into the wire-protecting sleeve in field, and facilitating subsequent wire replacement.

Description

Bushing joint

Technical field

The present invention relates to a kind of bushing joint for the installing cable, belong to cable and connect the device technical field.

Background technology

The national standard of inside plant wiring requires with PVC protecting pipe and pipe joint cable to be socketed.The normally 90 degree turnovers of faying face that existing pipe joint (such as elbow, threeway, four-way etc.) is inboard, resistance was large when cable moved in pipe joint, turn and just draw motionless cable when surpassing 3, time-consuming hard when not only laying cable for the first time, and be to change later on cable to bring very large difficulty.

At present, the way that the solution cable moves in the pipe joint inside turn in the practice generally has: one, wall or the ground separation at the pipe joint place reserves some Wire casing boxes, making things convenient for cable to install, but so not only increase decoration cost, also can cause metope or ground not attractive in appearance; Two, an on-the-spot corner tube wall excision part with pipe joint with reduce wire by the time resistance, but so not only time-consuming, the effort, and elbow intensity also can reduce greatly, larger problem is cement, sandstone etc. are easy to that the opening part from elbow enters in the pipe in construction, hinder passing through of wire; Three, the scene is with one section rear pipe joint that substitutes of protecting pipe bending, but the general radius of protecting pipe is larger after the bending, if all imbed body of wall and ground, just need to open on the wall very dark groove or ground is raised, except increasing difficulty of construction, also affect like this intensity of building structure; Four, also having a kind of medial surface of 90 degree corners of pipe joint is a bit of arc surface, such as the disclosed a kind of Wire conduit bend of Chinese patent ZL200620053575.0, although the interior curved side of this elbow is also smaller than the rounder and more smooth so that frictional resistance of aforementioned tube joint, but the friction of cable and interior curved side remains sliding friction, when cable repeatedly turns round when causing cable in the pulling to be pressed on this inner arc face, still can produce larger frictional resistance, finally spur still unusual effort, time-consuming even draw motionless of cable.

Summary of the invention

The technical problem to be solved in the present invention is: a kind of bushing joint with low frictional resistance is proposed, thus the convenient cable replacing of adopting after wire bushing is laid cable and laying.

Technical scheme of the present invention is: a kind of bushing joint, and comprise hollow and be provided with the joint body of round part, the inner chamber of the round part of described joint body is provided with wheel shaft and is sleeved on roller on the wheel shaft.

Bushing joint of the present invention is owing to the inner chamber at its round part is provided with roller, when passing bushing joint, cable abuts on the side face of roller, will drive roller when the pulling cable rotates, so that cable and roller form the less rolling friction of frictional force, so cable can change the direction of motion very like a cork and pass through bushing joint.Compare existing various pipe joints, not only greatly convenient scene installs the laying cable in wire bushing, and brings very big facility for changing later on cable.

Improvement of the technical scheme is: the middle part of described roller forms notch.Like this, can limit cable and on roller, laterally slide and the disengaging roller, remain that cable abuts on the roller.

One of further improvement in the technical proposal is: described joint body is involutory two halves housing, is shaped with respectively corresponding connector on the involutory surface of described two halves housing; Described wheel shaft is divided into respectively two that inwall with the two halves housing is connected as a single entity.During installation, when the two halves housing is involutory, roller with concave is placed in half housing first, and roller one end is enclosed within on the wheel shaft of this half housing, again raised line and the groove respective aligned of two halves housing are pegged graft, simultaneously the roller other end is enclosed within on the wheel shaft on second half housing, last involutory surface at the two halves housing is coated with a little adhesion agents and can with two halves housing firm engagement, finishes the installation of bushing joint of the present invention.

Two of further improvement in the technical proposal is: the round part of described joint body is made two parts of each other loose joint, and a part is the basic shell that is connected as a single entity with joint body, and another part is the guard shield that can dock with basic shell sealing; Described roller is placed in the basic shell, and described basic shell has the biside plate vertical with the axial line of described wheel shaft, is shaped with on the described biside plate for the axis hole that wheel shaft is installed.

The one of perfect of technique scheme is: described connector is raised line and groove.

Perfect two of technique scheme is: described connector is buckle.

Perfect three of technique scheme is: described connector is snap ring.

Perfect four of technique scheme is: described connector is tied silk.

Perfect five of technique scheme is: be shaped with the protection wheel shaft on the described guard shield and rotate unimpeded ear holder.

Further improving of technique scheme is: described joint body is one of elbow, threeway, four-way and Duo Tong.

Description of drawings

Below in conjunction with accompanying drawing bushing joint of the present invention is described further.

Fig. 1 is the structural representation of the embodiment of the invention one bushing joint-elbow.

Fig. 2 be among Fig. 1 A-A to profile.

Fig. 3 be among Fig. 1 B-B to view.

Fig. 4 be among Fig. 2 C-C to profile.

Fig. 5 be among Fig. 3 D-D to profile.

Fig. 6 is the structural profile schematic diagram of roller among Fig. 1.

Fig. 7 is that the elbow of embodiment one is installed in the structural representation on the wire bushing pipe.

Fig. 8 is half structural representation of the embodiment of the invention two bushing joints-threeway.

Fig. 9 is second half structural representation of the embodiment of the invention two bushing joints-threeway.

Figure 10 is half structural representation of the embodiment of the invention three bushing joints-four-way.

Figure 11 is second half structural representation of the embodiment of the invention three bushing joints-four-way.

Figure 12 is the structural representation of the embodiment of the invention four.

Figure 13 is the vertical view of Figure 12.

Figure 14 is a part of structural representation that elbow decomposes among Figure 13.

Figure 15 is another part structural representation that elbow decomposes among Figure 13.

Figure 16 be among Figure 15 F-F to profile.

Figure 17 is the structural representation of the embodiment of the invention five bushing joints-threeway.

Figure 18 is the structural representation of the embodiment of the invention six bushing joints-four-way.

Embodiment

Embodiment one

The bushing joint of the present embodiment is elbow, as shown in Figure 1, comprise hollow and be provided with the elbow body 1 of a round part, such as Fig. 2, shown in Figure 3, elbow body 1 is involutory two halves housing 1-1,1-2, inner chamber at the round part of elbow body 1 is provided with wheel shaft 2, and wheel shaft 2 is divided into two, and the inwall with two halves housing 1-1,1-2 is connected as a single entity respectively.At wheel shaft 2 suit rollers 3, as shown in Figure 6, the middle part of roller 3 forms notch 4.As shown in Figure 4 and Figure 5, on the involutory surface of two halves housing 1-1,1-2, be shaped with respectively corresponding raised line 5 and groove 6.With two halves housing 1-1, when 1-2 is involutory, roller 3 with concave is placed on 1-1 in half housing first, and roller 3 one ends are enclosed within on the wheel shaft 2 of this half housing 1-1, again raised line 5 and groove 6 respective aligned of two halves housing are pegged graft, simultaneously roller 3 other ends are enclosed within on the wheel shaft 2 on second half housing 1-2, last involutory surface at two halves housing 1-1,1-2 is coated with a little adhesion agents and can with two halves housing firm engagement, finishes the bushing joint of the present embodiment and install.

During use, as shown in Figure 7, the bushing joint (elbow) of the present embodiment is connected with wire bushing pipe 100.Electric wire 7 is passed wire bushing pipe 100, all be attached to when wherein electric wire 7 is through elbow on 4 of the notches of roller 3.When need pullings electric wire 7, electric wire 7 will make roller 3 roll through elbow the time, thereby makes between electric wire 7 and the roller 3 that rolls only generation than the rolling friction of less friction, so electric wire 7 can be pulled very like a cork.

Embodiment two

The bushing joint of the present embodiment is threeway, the elbow of its basic structure and embodiment one is identical, such as Fig. 8 and shown in Figure 9, the variation of the present embodiment is: elbow body 1 becomes the involutory threeway body that consists of by two halves housing 11-1,11-2, threeway body 11 is provided with two round parts, is respectively equipped with cover wheel shaft 2 and a roller 3 at the inner chamber of two round parts of threeway body 11.

Embodiment three

The bushing joint of the present embodiment is four-way, the threeway of its basic structure and embodiment two is identical, as shown in Figure 10 and Figure 11, the variation of the present embodiment is: the threeway body becomes the involutory four-way body 21 that consists of by two halves housing 21-1,21-2, four-way body 21 is provided with four round parts, is respectively equipped with cover wheel shaft 2 and a roller 3 at the inner chamber of 21 4 round parts of four-way body.

Embodiment four

The bushing joint of the present embodiment is the another kind of elbow that develops on embodiment one basis, such as Figure 12, Figure 13 and shown in Figure 14, the round part of elbow body 1 is made two parts of each other loose joint, a part is the basic shell 8 that is connected as a single entity with the elbow body, and another part is the guard shield 9 that can dock with basic shell 8 sealings.Roller 3 is placed in the basic shell 8, and basic shell 8 has the biside plate vertical with the axial line of wheel shaft, is shaped with on the biside plate for the axis hole 10 that wheel shaft 2 is installed.Be shaped with protection wheel shaft 2 on the guard shield 9 and rotate unimpeded ear holder 12.

Embodiment five

The bushing joint of the present embodiment is threeway, the elbow of its basic structure and embodiment four is identical, as shown in figure 17, the variation of the present embodiment is: elbow body 1 becomes threeway body 11, a guard shield 9 that is respectively equipped with a roller 3 and docks with basic shell 8 sealings at the inner chamber of 11 two round parts of threeway body.

Embodiment six

The bushing joint of the present embodiment is four-way, the threeway of its basic structure and embodiment five is identical, as shown in figure 18, the variation of the present embodiment is: threeway body 11 becomes four-way body 21, a guard shield 9 that is respectively equipped with a roller 3 and docks with basic shell 8 sealings at the inner chamber of 21 4 round parts of four-way body.

The various embodiments described above that are not limited to of the present invention, such as: 1) middle part of roller also can not form notch 4, but flat or projection; 2) roller surface can be made smooth curved surface, toothed curved surface or with the curved surface of lines; 3) the roller similar needle bearing structure that can be comprised of one group of needle roller: 4) two halves housing 1-1,1-2 can be from the centerline of pipe fitting separately, also can be from other positions of pipe fitting separately; 5) raised line 5 on the involutory surface of two halves housing 1-1,1-2 and groove 6 also can be replaced by buckle, snap ring, tied silk or other connectors; 6) except threeway and four-way, also comprise the how logical of other; Etc..All employings are equal to replaces the technical scheme that forms, and all drops on the protection range of requirement of the present invention.

Claims

1. bushing joint comprises hollow and is provided with the joint body of round part, it is characterized in that: the inner chamber of the round part of described joint body is provided with wheel shaft and is sleeved on roller on the wheel shaft; The middle part of described roller forms notch; The round part of described joint body is made two parts of each other loose joint, and a part is the basic shell that is connected as a single entity with joint body, and another part is the guard shield that can dock with basic shell sealing; Described roller is placed in the basic shell, and described basic shell has the biside plate vertical with the axial line of described wheel shaft, is shaped with on the described biside plate for the axis hole that wheel shaft is installed.

2. described bushing joint according to claim 1 is characterized in that: be shaped with the protection wheel shaft on the described guard shield and rotate unimpeded ear holder.

3. described bushing joint according to claim 1 and 2, it is characterized in that: described joint body is elbow.

4. described bushing joint according to claim 1 and 2, it is characterized in that: described joint body is to lead to more.