WO2013029253A1

WO2013029253A1 - Harness protection device

Info

Publication number: WO2013029253A1
Application number: PCT/CN2011/079203
Authority: WO
Inventors: 郑捷; 陈建雄
Original assignee: 长沙中联重工科技发展股份有限公司; 湖南中联重科专用车有限责任公司
Priority date: 2011-08-31
Filing date: 2011-08-31
Publication date: 2013-03-07

Abstract

A harness protection device comprises a harness protection body (10) that has an internal passage for a harness to pass through and has at least one butt joint end (12) in butt joint with a protection pipe (40) sleeved outside a harness (20); a sealing component (11), disposed between the butt joint end (12) of the harness protection body (10) and the protection pipe (40) in a sealed manner. In the harness protection device provided in the present invention, the harness protection body that has a butt joint end and the seal component can form desirable dustproof and waterproof protection at terminals and branches of the harness, to prevent the equipment from failure due to damages to the harness, thereby improving the working efficiency and reducing the lost.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of construction machinery, and in particular to a wire harness protection device. BACKGROUND OF THE INVENTION At present, a wire harness used on an engineering vehicle is usually protected by a bellows for external protection. The ends of the bellows are wound by a tape to solve the end protection of the wire harness. At the branch, the main line and the branch line are connected by a buckle. The dustproof effect and waterproof effect of the method are very poor, and the wire harness is easily corroded by dust and water, which causes malfunction of the device using the wire harness and affects work efficiency. SUMMARY OF THE INVENTION An object of the present invention is to provide a wire harness guard device that solves the technical problem that existing wire harnesses are easily corroded by dust and water at the ends and branches. To achieve the above object, the present invention provides a wire harness guard comprising: a guard body having a wire harness passage therethrough and having at least one butt end opposite to a protective tube sleeved outside the wire harness; a sealing member, The seal is disposed between the butt end of the guard body and the protective tube. Further, the guard body is a sealed end, the first end of the seal end is an open butt end, and the second end is a closed end having an end cover; the protection tube is a bellows, and the outer surface of the bellows is concave The annular ring; the sealing member is one or more annular flanges disposed on the inner surface of the sealing tip, the annular flange sealingly mating with the annular passage on the bellows. Further, the annular flange cooperates with the concave loop of the outer circumference of the bellows in the width direction to relatively fix the seal end and the bellows. Further, the inner side of the closed end of the sealing tip is provided with one or more groove portions for penetrating the wire harness. Further, the outer periphery of the sealing tip is provided with an anti-slip portion. Further, the anti-slip portions are a plurality of radial convex rings arranged in the axial direction of the sealing end. Further, the guard body is a pipe joint having a plurality of butt ends, and the sealing member includes a seal ring that is fitted on the concave loop of the outer circumference of the bellows and a fastener that positions the seal ring, and the concave loop is formed on the Ripple Between the adjacent first ring table and the second ring table on the tube, the first ring table is close to the butt end of the pipe joint, and the second ring table is away from the butt end of the pipe joint, the height of the sealing ring is greater than the first ring table and The height of the second ring. Further, the fastener comprises: a pipe clamp, which is disposed on the second ring table, and the two sides of the pipe card have a card edge sandwiching the second ring table, and the sealing ring is located between the first ring table and the first card edge The first card edge is located on a side of the second ring platform adjacent to the butt end of the pipe joint; the end cap is sleeved on the outer side of the pipe clamp and the seal ring, one end of the end cap is connected with the butt end of the pipe joint, and the other end of the end cap For the positioning end, the positioning end has a radially inward inner card edge, and the inner card edge performs a stop positioning on the second card edge of the pipe card. Further, the butt end of the pipe joint has an external thread, the end cap has an internal thread matched with the external thread, and the outer surface of the end cap is provided with an anti-slip line. Further, the guard body has three or four communicating butts. The invention has the following beneficial effects: The wire harness guard provided by the invention can form a good dustproof and waterproof protection for the ends and branches of the wire harness by using the guard body and the sealing member having the butt end, thereby avoiding damage of the wire harness and causing equipment to occur. Failure, improve work efficiency and reduce losses. In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The invention will now be described in further detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in FIG. BRIEF DESCRIPTION OF THE DRAWINGS In the drawings: Fig. 1 is a schematic view showing the structure of a sealed end of a preferred embodiment of the present invention; Fig. 2 is a schematic view showing the structure of a pipe joint according to a preferred embodiment of the present invention; and Fig. 3 is a T-shaped view having three butted ends according to a preferred embodiment of the present invention. FIG. 4 is a schematic structural view of a cross-shaped pipe joint having four butt ends according to a preferred embodiment of the present invention; FIG. 5 is a schematic structural view of a side-by-side pipe joint having four butt ends according to a preferred embodiment of the present invention; Figure 6 is a schematic view showing the structure of a sealed end having a plurality of grooves according to a preferred embodiment of the present invention; Fig. 7 is a schematic view showing the structure from the left side of Fig. 6. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention are described in detail below with reference to the accompanying drawings. As shown in FIG. 1 and FIG. 2, the present invention provides a wire harness guard device, the guard device comprising: a guard body 10 having a wire harness passing through the passage therein and having at least one protection against the sheathing of the wire harness 20 The opposite end of the pipe; the sealing member is sealed between the butt end of the guard body 10 and the protection tube. The shape of the guard body 10 is adapted to the shape of the end or branch of the harness 20 of the protected wire or cable. Referring again to Figure 1, the guard body 10 is a sealed end that is open at one end and that is sealed at the other end, the sealing member being one or more annular flanges disposed within the sealed end. 11. The sealed tip can be used to protect the end of the wire harness from dust and water. The bellows 40 can be used as the protective tube. In order to achieve the positioning and sealing of the sealing tip, the width of the annular flange 11 is adapted to the distance between the adjacent annular table 41 of the outer circumference of the bellows 40 such that the sealing tip and the bellows 40 are relatively fixed. That is, the annular flange 11 is inserted into the loop between the adjacent ring seats 41 of the bellows 40, and the annular flange 11 is tightly fitted with the ring seats 41 on both sides to prevent the sealing end from being axially aligned. Shake. In order to provide a better sealing effect, the inside of the closed end of the sealing end is provided with one or more groove portions 13 through which the wire harness passes. When only one tuft harness is passed through, only one groove portion 13 may be provided at the center of the end face of the seal tip. As shown in FIGS. 6 and 7, when a plurality of electric wires are passed through, a plurality of groove portions 13 may be provided at the end faces of the sealing end portions, and these groove portions 13 may be regularly evenly distributed on the end faces of the sealing end portions. , can also be set with the location of the wires or cables that need to be interspersed. In order to facilitate the installation of the seal tip, an anti-slip portion may be provided on the outer circumference of the seal tip. The anti-slip portion may be a plurality of radial convex rings 15 arranged axially along the sealing end, or may be other shapes of anti-slip lines such as a mesh. When the end of the wire harness 20 needs to be sealed, the sealing end can be pushed onto the end of the bellows outside the wire harness 20, so that the annular flange 11 in the sealing end is squeezed into the loop of the bellows 40. At the same time, the wire harness 20 is pierced through the groove portion 13 on the closed end face of the sealing end. Referring to Figures 2, 3, 4 and 5, in order to protect the branches of the wire harness 20, the guard body 10 can also be a pipe joint having two or more butt ends 12. The seal includes a seal ring 31 that fits over the outer circumference of the bellows 40 and a fastener that positions the seal ring 31. The loop for mounting the seal ring 31 is adjacent to the first ring on the bellows 40. The table 43 and the second ring table 45 are formed, the first ring table 43 is close to the butt end 12 of the pipe joint, the second ring table 45 is away from the butt end 12 of the pipe joint, and the height of the seal ring 31 is greater than the first ring table 43 and the second The height of the ring 45. The height of the sealing ring 31 is higher than the height of the two ring stages, and can function to limit the butt end 12 of the pipe joint. The number of the butt ends 12 of the pipe joint may be determined according to the number of branches at the branch of the wire harness 20, and may be a straight three-way, an oblique three-way, a four-way, a five-way or a multi-pass, or a two-way elbow, that is, The guard body 10 can have two, three, four, five or more mating ends that are interconnected, and the mating ends can be in the form of side-by-side, vertical, or inclined. In order to fix the sealing ring 31 and provide a better sealing effect, it can be seen from FIG. 2 that the fastener may include: a tube card 36 and an end cap 37, wherein the tube card 36 may be snapped on the second ring table 45. on. From the cross-sectional view shown in FIG. 2, the two sides of the pipe clamp 36 have a card edge sandwiching the second ring table 45, and the sealing ring 31 is located between the first ring table 43 and the first card edge 361, the first card. The side 361 is located on the side of the second ring 45 adjacent to the butt end 12 of the pipe joint. With the width of the first card edge 361, the sealing ring 31 can be firmly restrained in the outer circumference of the bellows 40, and The elasticity of the seal ring 31 itself allows the seal ring 31 to be tightly wrapped around the loop of the bellows 40. The end cap 37 is placed over the outside of the pipe clamp 36 and the seal ring 31 and is connected to the butt end 12 of the pipe joint. The tube card 36 can be formed from two semi-circular half-tube cards that are separate. For convenient and reliable connection, the butt end 12 of the pipe joint may have an external thread, and the end cap 37 may have an internal thread that matches the external thread, that is, the end cap 37 may be connected to the pipe joint by means of a screw connection. Of course, the end cap 37 and the pipe joint can also be connected by a snap connection. In order to facilitate the mounting operation of the end cap 37, the outer surface of the end cap 37 is provided with an anti-slip texture, and a grid-like protective pattern may be provided on the end cap 37. When installing the pipe joint, firstly, the end cap is sleeved on the bellows 40, and a part of the bellows 40 is exposed near the pipe joint, and the pipe clamp 36 of the sealing ring 31 is mounted on the portion, the sealing ring 31 is positioned, and then The end of the bellows 40 moves toward the sealing ring 31, so that the end surface of the butt end 12 of the bellows 40 is placed on the side of the sealing ring 31 to serve as a limit. Finally, the end cap 37 is corrugated. The tube 40 is pushed in the direction and secured to the butt end 12 of the pipe joint by a connecting thread or a connecting snap seal. The other end of the end cap 37 is a positioning end having a radially inward inner rim 371 that stops the second rim 362 of the tube card 36. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A wire harness guard characterized by comprising:

a guard body (10) having a wire harness passage therethrough and having at least one butt end (12) opposite to the protection tube disposed outside the wire bundle (20);

A sealing member is disposed between the butt end (12) of the guard body (10) and the protective tube.

2. The wire harness guard according to claim 1, wherein:

The guard body (10) is a sealed end, the first end of the sealing end is an open end (12), and the second end is a closed end having an end cover;

The protection tube is a bellows (40), and a concave loop is formed on an outer surface of the bellows (40);

The sealing member is one or more annular flanges (11) disposed on an inner surface of the sealing end, the annular flange (11) and the concave shape on the bellows (40) The ring is sealed.

The wire harness guard according to claim 2, wherein the annular flange (11) cooperates with the concave ring of the outer circumference of the bellows (40) in the width direction The seal tip is relatively fixed between the bellows (40).

The wire harness guard according to claim 2, characterized in that the inner side of the closed end of the sealing end is provided with one or more groove portions (13) for penetrating the wire harness (20).

The wire harness guard according to claim 2, wherein the outer periphery of the seal tip is provided with an anti-slip portion.

The wire harness guard according to claim 5, wherein the anti-slip portion is a plurality of radial convex rings (15) arranged in the axial direction of the seal end.

7. The wire harness guard according to claim 1, wherein the guard body (10) is a pipe joint having a plurality of the butt ends (12), and the sealing member comprises a set of the corrugations tube

a seal ring (31) on the concave loop of the outer circumference of (40) and a fastener for positioning the seal ring (31), the concave loop formed on the bellows (40) Between the adjacent first ring stage (43) and the second ring stage (45), the first ring stage (43) is adjacent to the butt end (12) of the pipe joint, The second ring table (45) is away from the butt end (12) of the pipe joint, and the height of the seal ring (31) is greater than the first ring stage (43) and the second ring stage ( 45) The height. The wire harness guard according to claim 7, wherein the fastener comprises:

a pipe card (36) is disposed on the second ring table (45), and the two sides of the pipe card (36) have a card edge sandwiching the second ring table (45), the sealing ring (31) between the first ring table (43) and the first card edge (361), the first card edge (361) being located near the pipe joint of the second ring table (45) One side of the docking end (12);

An end cap (37) is disposed on the outer side of the pipe clamp (36) and the sealing ring (31), and one end of the end cap (37) is connected to the butting end (12) of the pipe joint, The other end of the end cap (37) is a positioning end, the positioning end has a radially inward inner card edge (371), and the inner card edge (371) is opposite to the tube card (36). The edge (362) is positioned for the stop. The harness guard according to claim 8, wherein said butt end (12) (12) of said pipe joint has an external thread, and said end cap (37) has a matching with said external thread Internal thread, and the outer surface of the end cap (37) is provided with an anti-slip texture. The harness guard according to any one of claims 1 to 9, characterized in that the guard body (10) has three or four communicating butt ends (12).