CN210167763U

CN210167763U - Wire harness movement grommet

Info

Publication number: CN210167763U
Application number: CN201921467982.XU
Authority: CN
Inventors: 裴迪利; 李爱华
Original assignee: Hunan Haibo Reed Electric Intelligent Control Technology Co Ltd
Current assignee: Hunan Haibo Reed Electric Intelligent Control Technology Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-03-20
Anticipated expiration: 2029-09-05

Abstract

The utility model discloses a wiring harness motion grommet, drum spare and waterproof including an organic whole connection, drum spare is the cavity tube-shape, waterproof coaxial cup joints in drum spare outside, waterproof includes the waterproof body of round platform form, the microcephaly end coaxial coupling of waterproof body cushions the bars of cavity tube-shape, the internal diameter of buffering bars is greater than the external diameter of drum spare, the lateral surface of waterproof body is equipped with first arch, second arch and third arch from its major part end to microcephaly end interval in proper order, first arch, second arch and third arch are all along the circumference protrusion of waterproof body lateral surface the lateral surface, form the first buffering ditch of indent between first arch and the second arch, form the second buffering ditch of indent between third arch and the buffering bars. When the wire harness of the utility model passes through the wall, the metal plate and the plate surface and the path of the wire harness is changed, the waterproof part can be firmly and smoothly attached to the connecting wall, so that effective water proofing is realized; the waterproof part has simple and effective structure and low cost.

Description

Wire harness movement grommet

Technical Field

The utility model belongs to electric pencil protection system specifically is a pencil motion grommet.

Background

The wiring harness is connected in a small number of electrical devices, the wiring harness often needs to penetrate through a wall or an equipment metal plate when the wiring harness is connected between the interior of the equipment and each device, holes need to be formed in the wall or the equipment metal plate, therefore, the wiring harness needs to be arranged in a waterproof mode at a position where the wiring harness penetrates through the wall or the metal plate, water is prevented from passing through the holes, and waterproof parts are arranged in the existing wiring harness connection. However, the pencil often can take place the change in pencil route simultaneously at wall-piercing or fenestrate in-process, as shown in fig. 1, the waterproof piece laminating connecting wall, the connecting wall is wall or panel beating, and the waterproof piece is stopped up the trompil, can pull the waterproof piece when pencil route changes (the crooked direction is shown for arrow S in the picture), and the power that makes the waterproof piece laminating connecting wall' S one end receive is inhomogeneous to partly break away from the connecting wall, take place the phenomenon of sticking up the limit, as shown in a of fig. 1, lead to moisture to get into through the space that produces behind the sticking up the limit the connecting hole, waterproof function is inefficacy.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides a wire harness movement grommet, when the wire harness passes through the wall, the metal plate and the plate surface and the path of the wire harness is changed, the waterproof part can be firmly and smoothly attached to the connecting wall, so that effective waterproof is realized; the waterproof part has simple and effective structure and low cost.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is:

the utility model provides a pencil motion grommet, cylinder spare and waterproof including an organic whole connection, cylinder spare is the cavity tube-shape, waterproof coaxial cup joints in cylinder spare outside, waterproof includes the waterproof body of round platform form, the little head end coaxial coupling of waterproof body cushions the bars of cavity tube-shape, the internal diameter of buffering bars is greater than the external diameter of cylinder spare, the lateral surface of waterproof body is equipped with first arch, the second is protruding and the third is protruding from its major part end to little head end interval in proper order, first arch, the protruding circumference protrusion along waterproof body lateral surface of second and third is protruding the lateral surface forms the first buffering ditch of indent between first arch and the second arch, the second buffering ditch of indent is formed between the protruding and the buffering bars of third.

A plurality of concave buffer grooves are uniformly arranged on the waterproof body between the second protrusion and the third protrusion at intervals.

A plurality of dashpots distribute along the circumference of waterproof body.

The buffer slot is an oval groove, and the straight line where the oval long axis is located is intersected with the central shaft of the waterproof body.

The height of the second protrusion protruding the waterproof body is less than the height of the third protrusion and the first protrusion protruding the waterproof body.

The buffer grid is provided with a plurality of open-loop notches which penetrate through the wall surface of the buffer grid along the circumferential direction of the buffer grid.

The lateral surface of waterproof body still is equipped with along lateral surface circumference protrusion the big head end of lateral surface is protruding, and big head end is protruding to be close to big head end than first arch.

A concave groove which is concave along the outer side surface is formed between the large head end bulge and the first bulge.

The cylindrical member and the waterproof member are made of rubber.

Compared with the prior art, the beneficial effects of the utility model are that: when the wiring harness penetrates through a wall, a metal plate or a board surface and the wiring harness path is changed, the waterproof part can bear the pressure and the tensile force caused by the change of the wiring harness path, the connection wall is stably and flatly attached, and effective waterproof is realized; the waterproof part effectively absorbs deformation generated by pulling force and pressure through the protrusions and the inner grooves which are reasonably designed, and the waterproof part is simple and effective in structure and low in cost.

Drawings

FIG. 1 is a schematic view of a prior art flashing construction;

fig. 2 is a schematic structural diagram of an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of an embodiment of the present invention;

fig. 4 is a schematic view of the natural state of an embodiment of the present invention;

fig. 5 is a schematic diagram of a state of a change of a wire harness path according to an embodiment of the present invention.

Detailed Description

The present invention provides a harness movement grommet according to an embodiment of the present invention, which will be fully described in detail below. The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the invention.

A cable harness movement grommet, as shown in figures 2 and 3, comprises a cylindrical part 1 and a waterproof part 2 which are integrally connected, wherein the cylindrical part 1 and the waterproof part 2 are both made of rubber materials and can generate certain deformation. The cylindrical member 1 has a hollow cylindrical shape, and the waterproof member 2 is used for waterproofing, and specifically, for preventing moisture from entering from one side of the connecting wall 4 to the other side when the wire harness 3 is passed through a wall or a hole.

The waterproof part 2 is coaxially sleeved outside the cylindrical part 1, the waterproof part 2 comprises a round-table-shaped waterproof body 21, the small end of the waterproof body 21 is coaxially connected with a hollow cylindrical buffer grid 22, and the inner diameter of the buffer grid 22 is larger than the outer diameter of the cylindrical part 1. Namely, the bumper fence 22 is coaxially sleeved outside the cylindrical member 1, and the bumper fence 22 and the cylindrical member 1 are spaced apart from each other. The bumper fence 22 is provided with a plurality of open-loop notches penetrating through the wall surface of the bumper fence 22 along the circumferential direction, in other words, the free end of the bumper fence 22 is recessed into a notch penetrating through the wall surface of the bumper fence, and the notches are distributed along the circumferential direction of the bumper fence 22. Similar to the bumper fence 22, one end of the cylindrical member 1 on the same side as the bumper fence 22 is provided with a plurality of open-loop notches penetrating through the wall surface along the circumferential direction, in other words, the free end of the cylindrical member 1 on the same side as the bumper fence 22 is recessed into a notch penetrating through the wall surface, and the notches are distributed along the circumferential direction of the cylindrical member 1. The notches of the bumper grids 22 and the notches of the cylindrical member 1 are used for clamping and fixing the wire harness. The wire harness moving grommet is adapted to two kinds of corrugated pipes or wire diameters, one of which passes through the hollow part of the cylindrical member 1, and the other of which passes through the interval part between the cylindrical member 1 and the buffer grid 22, as shown in fig. 5, the wire harness 3 passes through the interval part between the cylindrical member 1 and the buffer grid 22, and the wire harness 3 is a corrugated pipe or wire diameter.

The outer side surface of the waterproof body 21 is provided with a large-head end bulge 29, a first bulge 23, a second bulge 24 and a third bulge 25 at intervals in sequence from a large-head end to a small-head end of the waterproof body 21, and the large-head end bulge 29, the first bulge 23, the second bulge 24 and the third bulge 25 all bulge out of the outer side surface along the circumferential direction of the outer side surface of the waterproof body 21. The height of the second protrusion 24 protruding the waterproof body 21 is less than the height of the third protrusion 25 and the first protrusion 23 protruding the waterproof body 21, the height of the big end protrusion 29 protruding the waterproof body 21 is equal to the height of the first protrusion 23 protruding the waterproof body 21, and the height of the third protrusion 25 protruding the waterproof body 21 is less than the height of the first protrusion 23 protruding the waterproof body 21. A first concave buffer groove 26 is formed between the first protrusion 23 and the second protrusion 24, and a second concave buffer groove 27 is formed between the third protrusion 25 and the buffer grid 22. Between the big end protrusion 29 and the first protrusion 23, a concave groove is formed along the outer side surface. A plurality of concave buffer grooves 28 are uniformly arranged on the waterproof body 21 between the second protrusion 24 and the third protrusion 25 at intervals, the plurality of buffer grooves 28 are distributed along the circumferential direction of the waterproof body 21, and the uniform symmetric distribution of the plurality of buffer grooves 28 helps to uniformly absorb the deformation of the waterproof member 2 in use. The buffer groove 28 is an elliptical groove, and a straight line where the major axis of the ellipse is located intersects with the central axis of the waterproof body 21. The effect of the big end protrusion 29, the first protrusion 23, the second protrusion 24 and the third protrusion 25 is to improve the toughness of the waterproof member 2, i.e. to improve the tensile and compressive capacity of the waterproof member 2, the effect of the groove, the first buffer groove 26, the second buffer groove 27 and the buffer groove 28 is to absorb the deformation of the waterproof member 2 when the waterproof member 2 receives external force, so as to provide a change space for the deformation of the waterproof member 2.

As shown in fig. 4 and 5, when the wire harness 3 needs to pass through a wall or an equipment sheet metal, a wall surface through which the wire harness 3 needs to pass is set as a connecting wall 4, the cylindrical member 1 passes through the connecting wall 4, two ends of the cylindrical member 1 are respectively located at two sides of the connecting wall 4, a large end of the waterproof body 21 is attached to the connecting wall 4, further, a path of the wire harness 3 at one side of the waterproof body 21 is changed, namely, turning is needed, and the like, as shown in fig. 5, the turning direction is shown by an arrow S, the wire harness 3 with the changed path pulls the cylindrical member 1, so that an included angle between a central axis of the cylindrical member 1 and the connecting wall 4 is reduced, the cylindrical member 1 respectively generates pressing and pulling effects on two sides of the waterproof member 2, so that the waterproof member 2 is deformed, when the waterproof member 2 is pressed, the generated deformation is gradually absorbed by the second buffer groove 27, the buffer groove 28, the first buffer groove 26 and the groove, and, the generated stretching deformation is gradually absorbed through the buffering of the second buffer groove 27, the buffer groove 28, the first buffer groove 26 and the groove, meanwhile, the toughness of the waterproof part 2 is increased by the first protrusion 23 and the large end protrusion 29, under the comprehensive action, the force received by the large end of the waterproof body 21 is neutralized, namely, the force received by the large end of the waterproof body 21 is uniform, the large end keeps flat and tight attached connecting wall 4, as shown in M in FIG. 5, the connection part of the first protrusion 23 and the waterproof body 21 keeps flat, as shown in N in FIG. 5. Finally, the phenomenon of edge warping is prevented, and therefore a good waterproof effect is achieved.

Finally, it must be said here that: the above embodiments are only used for further detailed description of the technical solutions of the present invention, and should not be understood as limiting the scope of the present invention, and the modifications and adjustments made by those skilled in the art according to the above-mentioned contents of the present invention are all included in the scope of the present invention.

Claims

1. A wire harness movement grommet comprises a cylindrical part (1) and a waterproof part (2) which are integrally connected, wherein the cylindrical part (1) is in a hollow cylindrical shape, the waterproof part (2) is coaxially sleeved outside the cylindrical part (1), the waterproof part (2) comprises a round platform-shaped waterproof body (21), the wire harness movement grommet is characterized in that a small end of the waterproof body (21) is coaxially connected with a hollow cylindrical buffer grid (22), the inner diameter of the buffer grid (22) is larger than the outer diameter of the cylindrical part (1), first bulges (23), second bulges (24) and third bulges (25) are sequentially arranged on the outer side surface of the waterproof body (21) from the large end to the small end at intervals, the first bulges (23), the second bulges (24) and the third bulges (25) are all protruded along the circumferential direction of the outer side surface of the waterproof body (21), and first buffer grooves (26) formed between the first bulges (23) and the second bulges (24), and a concave second buffer groove (27) is formed between the third bump (25) and the buffer grid (22).

2. The wire harness movement grommet of claim 1, wherein: a plurality of concave buffer grooves (28) are uniformly arranged on the waterproof body (21) between the second bulge (24) and the third bulge (25) at intervals.

3. The wire harness movement grommet of claim 2, wherein: the plurality of buffer grooves (28) are distributed along the circumferential direction of the waterproof body (21).

4. The wire harness movement grommet according to claim 2 or 3, characterized in that: the buffer groove (28) is an oval groove, and the straight line where the major axis of the oval is located is intersected with the central shaft of the waterproof body (21).

5. The wire harness movement grommet of claim 1, wherein: the height of the second bulge (24) protruding out of the waterproof body (21) is less than the height of the third bulge (25) and the first bulge (23) protruding out of the waterproof body (21).

6. The wire harness movement grommet of claim 1, wherein: the buffer grid (22) is provided with a plurality of open-loop notches penetrating through the wall surface along the circumferential direction.

7. The wire harness movement grommet of claim 1, wherein: the outer side surface of the waterproof body (21) is further provided with a big end protrusion (29) protruding out of the outer side surface along the circumferential direction of the outer side surface, and the big end protrusion (29) is close to the big end compared with the first protrusion (23).

8. The wire harness movement grommet of claim 7, wherein: a concave groove is formed between the big-end bulge (29) and the first bulge (23) and is concave along the outer side surface.

9. The wire harness movement grommet of claim 1, wherein: the cylindrical member (1) and the waterproof member (2) are made of rubber.