CN219181124U

CN219181124U - Waterproof sealing structure for multi-strand wire harness through hole

Info

Publication number: CN219181124U
Application number: CN202223396972.6U
Authority: CN
Inventors: 陶凯家
Original assignee: Changshu Tongrun Machinery & Electrical Equipment Manufacturing Co ltd
Current assignee: Changshu Tongrun Machinery & Electrical Equipment Manufacturing Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-06-13
Anticipated expiration: 2032-12-19

Abstract

The utility model provides a multi-strand wire harness via hole sealing waterproof structure which comprises a sealing cover, a wire fixing structure and a sealing cover. The edge of the wire fixing structure is provided with a plurality of U-shaped grooves with outward openings, the wire harness is placed in the plurality of U-shaped grooves and penetrates through the wire fixing structure, and the wire fixing structure brings the wire harness to penetrate through the reserved holes in the fixed object. The head end and the tail end of the wire fixing structure are respectively positioned at two sides of the fixed object, the middle end of the wire fixing structure is positioned in the reserved hole, and the middle end is matched with the reserved hole in size, namely, the diameter of the middle end is slightly smaller than that of the reserved hole. The sealing cover is provided with a first through hole, the first through hole penetrates through the wire harness to be sleeved on the head end, and the sealing cover, the head end and the fixed object form an inner cavity. The sealing cover is provided with a second through hole, the sealing cover penetrates through the wire harness through the second through hole to be detachably covered on the tail end, and the sealing cover after installation is clung to the fixed object. The sealing cover is provided with a glue spraying opening which is communicated with the inner cavity.

Description

Waterproof sealing structure for multi-strand wire harness through hole

Technical Field

The utility model relates to the technical field of via hole sealing waterproof structures, in particular to a multi-strand wire harness via hole sealing waterproof structure.

Background

The threading via hole seal is divided into a single-strand via hole seal and a multi-strand via hole seal, and is also commonly called a cable waterproof joint, the protective coil consists of a nut and a hollow screw, the inner side of the hollow screw is provided with a rubber ring, the wire harness penetrates through a rubber pad, the rubber ring is compressed and expanded when the nut is screwed, and the expanded rubber ring and the wire harness are compressed, so that the sealing effect can be achieved.

The scheme is more suitable for sealing single-strand wire harnesses, and the use of multiple-strand wires has various limitations, such as the need of selecting the number of the multi-strand wire harnesses and the diameter of each wire harness, the need of customizing a porous rubber ring, the need of additionally opening a mold for a special rubber ring, the need of mold cost, longer mold period, high cost and low flexibility.

When the multi-strand wire harness is sealed, the single hole of the wire fixing sleeve needs to be changed into multiple holes, namely, the single Kong Gaiwei hole in the wire fixing sleeve is multiple holes, the size of the holes is matched with the diameter of the wire harness, the holes are too large to seal, the wire harness cannot be penetrated by too small holes, the number of the holes is matched with the number of the wire harnesses, otherwise, redundant holes leak water, and the sealing effect cannot be achieved. The porous wire fixing sleeve generally needs to be opened and customized, extra mold cost and longer mold period are needed, and the flexibility is low.

In addition, if the end of the wire harness has a large connector, it is difficult or impossible to pass the wire harness through the wire fixing sleeve, the wire harness needs to be threaded first and then the connector needs to be pressed, and the press-connection connector needs special equipment or tools, and is generally manufactured by being sent out to a supplier. The wiring harness is connected with the fixed object after threading, the volume of a finished product becomes large, the manufacturing and transporting cost of the outgoing product can be increased sharply, corresponding equipment and tools are purchased when manufactured in a factory, extra cost is required, meanwhile, the turnover is not facilitated due to the overlarge volume, and the assembly efficiency is affected.

In summary, the conventional waterproof cable joint is suitable for sealing single-strand wire harnesses, and the use of multiple-strand wires has a plurality of limitations, such as the need for selecting the number of the multi-strand wire harnesses and the diameter of each wire harness, the need for customizing a porous rubber ring, the need for extra mold opening of a special rubber ring, the need for mold cost, longer mold period, high cost and low flexibility.

Disclosure of Invention

The utility model aims to provide a multi-strand wire harness via hole sealing waterproof structure, and in order to achieve the purposes, the utility model provides the following technical scheme:

a multi-strand wire harness via hole sealing waterproof structure comprises a sealing cover, a wire fixing structure and a sealing cover;

the wire harness is placed in the U-shaped grooves and penetrates through the wire fixing structure, the wire harness is taken by the wire fixing structure to penetrate through a reserved hole in a fixed object, the head end and the tail end of the wire fixing structure are respectively located at two sides of the fixed object, the middle end of the wire fixing structure is located in the reserved hole, and the middle end is matched with the reserved hole in size;

the sealing cover is provided with a first through hole, the first through hole penetrates through the wire harness and is sleeved on the head end, and an inner cavity is formed by the sealing cover, the head end and the fixture;

the sealing cover is provided with a second through hole, and the sealing cover can be detachably covered on the tail end through the second through hole penetrating through the wire harness;

the sealing cover is provided with a glue spraying opening, and the glue spraying opening is communicated with the inner cavity.

Further, the diameters of the plurality of U-shaped grooves are gradually reduced from inside to outside along the radial direction of the wire fixing structure.

Further, the plurality of U-shaped grooves at least meet one of the following conditions:

the number of the U-shaped grooves is several;

the number of the U-shaped grooves is 9.

the diameters of the plurality of U-shaped grooves are the same;

the diameters of the plurality of U-shaped grooves are not identical.

Further, the head end has a diameter greater than the middle end, and the tail end has a diameter no greater than the middle end.

Further, the first through hole has a larger aperture toward the head end than the other side.

Further, the head end is provided with a fixing portion coaxial with the head end, and the fixing portion is used for assisting the wire harness to be fixed and penetrate through the sealing cover.

Further, a plurality of exhaust holes are formed in the sealing cover.

Further, the sealing cover is in buckle connection with the head end.

Further, the sealing cover is an internal thread nut, and the tail end is provided with external threads matched with the sealing cover.

The beneficial effects are that:

the sealing waterproof joint manufactured by the structure and the method adopted by the embodiment of the utility model has low requirements on the number and the thickness of the wire harnesses, the number of the wire harnesses is lower than that of the joint hole, the diameter of the wire harnesses is smaller than that of the joint hole, the problem of opening the die for different wire harnesses can be avoided, meanwhile, because the opening of the waterproof joint is designed to be open, threading is not needed, and the installation is not affected even if a large connecting piece is arranged at the tail end of the wire harness. The embodiment of the utility model has no special requirements on the number and the diameter of the wire bundles. As long as the diameter of the wire harness is smaller than that of the U-shaped groove on the wire fixing sleeve, the number of the wire harnesses is not necessarily the same as that of the U-shaped grooves, so that a plurality of wire harness modes can be arranged and combined, a corresponding mold opening is not needed, the flexibility is very high, a plurality of mold fees can be saved, and meanwhile, the development period of the fixture can be shortened without opening the mold. The wire fixing sleeve hole is open-type, the wire harness does not need to pass through the wire fixing sleeve hole, and the wire harness can be put in from the side, so that the tail end of the wire harness can be externally sent to the terminal connector by a supplier in advance, the assembly efficiency is not affected, and the turnover cost is not increased. In summary, the technical solution of the embodiment of the present utility model provides a multi-strand wire harness via sealing waterproof structure, which solves the following disadvantages or limitations of the conventional waterproof joint:

1. when a single-wire through hole is formed, various types of waterproof joints are required to be configured according to the diameter of the wire, and various rubber rings are required to be manufactured by die sinking;

2. when the multi-line via hole is formed, waterproof joints of various types are required to be configured according to the diameter of the wire harness, and various rubber rings are required to be manufactured by opening the die;

3. when the multi-line via hole is formed, waterproof connectors with various types are required to be configured according to the number of the wire harnesses, and various rubber rings are required to be manufactured by opening the die;

4. whether single-wire or multi-wire vias, if a larger connector is provided at the end of the harness, the connector must be crimped after the wire is passed through the via, and special personnel and special tools are required, thereby reducing the production efficiency and having poor flexibility.

It should be understood that all combinations of the foregoing concepts, as well as additional concepts described in more detail below, may be considered a part of the inventive subject matter of the present disclosure as long as such concepts are not mutually inconsistent.

The foregoing and other aspects, embodiments, and features of the present teachings will be more fully understood from the following description, taken together with the accompanying drawings. Other additional aspects of the utility model, such as features and/or advantages of the exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the embodiments according to the teachings of the utility model.

Drawings

The drawings are not intended to be drawn to scale with respect to true references. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the utility model will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is an exploded view of the structure of an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of the structure of an embodiment of the present utility model;

FIG. 3 is a perspective view of a seal housing according to an embodiment of the present utility model;

FIG. 4 is a perspective view of a wire fixing portion according to an embodiment of the present utility model;

FIG. 5 is a schematic illustration of an assembly process according to an embodiment of the present utility model;

fig. 6 is a cross-sectional view of a harness loading harness in a different combination of embodiments of the present utility model.

The reference numerals are as follows: 1, a sealing cover; 1.1-gluing opening; 1.2-exhaust holes; 1.3-a first through hole; 2-wire harness; 3-a wire fixing structure; 3.1-a fixing part; 3.2-head end; 3.3-U-shaped groove; 3.4-middle end; 3.5-terminal; 3.7-external threads; 4-a fixture; 4.1-preformed holes; 5-capping; 5.1-a second through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs.

The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Also, unless the context clearly indicates otherwise, singular forms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "comprises," "comprising," or the like are intended to cover a feature, integer, step, operation, element, and/or component recited as being present in the element or article that "comprises" or "comprising" does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. "up", "down", "left", "right" and the like are used only to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a multi-strand wire harness via sealing waterproof structure, which includes a sealing cover 1, a wire fixing structure 3 and a sealing cover 5. The edge of the wire fixing structure 3 is provided with a plurality of U-shaped grooves 3.3 with outward openings, the wire harness 2 is placed in the U-shaped grooves 3.3 and penetrates through the wire fixing structure 3, and the wire fixing structure 3 brings the wire harness 2 to penetrate through the reserved holes 4.1 on the fixed object 4. The head end 3.2 and the tail end 3.5 of the wire fixing structure 3 are respectively positioned at two sides of the fixed object 4, the middle end 3.4 of the wire fixing structure 3 is positioned in the reserved hole 4.1, and the middle end 3.4 is matched with the reserved hole 4.1 in size, namely, the diameter of the middle end 3.4 is slightly smaller than that of the reserved hole 4.1. The sealing cover 1 is provided with a first through hole 1.3, the first through hole 1.3 passes through the wire harness 2 and is sleeved on the head end 3.2, and the sealing cover 1, the head end 3.2 and the fixed object 4 form an inner cavity. The cover 5 is provided with a second through hole 5.1, the cover 5 is detachably covered on the tail end 3.5 through the second through hole 5.1 penetrating through the wire harness 2, and the cover 5 after being installed is tightly attached to the fixed object 4. The sealing cover 1 is provided with a glue spraying opening 1.1, and the glue spraying opening 1.1 is communicated with the inner cavity.

According to the multi-strand wire harness via hole sealing waterproof structure, a plurality of wire harnesses 2 are placed on the plurality of U-shaped grooves 3.3 of the wire fixing structure 3, one wire harness 2 can be placed in one U-shaped groove 3.3, the specific placement mode can be placed according to actual requirements, after the wire harnesses 2 and the wire fixing structure 3 pass through the reserved holes 4.1 of the fixing object 4 together, the parts of the wire fixing structure 3, which are positioned at two sides of the fixing object 4, are respectively a head end 3.2 and a tail end 3.5, the sealing cover 1 is buckled on the head end 3.2 to form an inner cavity, and the sealing cover 5 is sealed on the tail end 3.5. Glue is injected into a glue injecting port 1.1 of the sealing cover 1, which can be glass cement and the like, so that the glue is ensured to be filled in a cavity and an inner gap of the sealing cover until the glue overflows from the air outlet and other gaps, the overflowed glue is cleaned up, and finally, the whole joint is enabled to have a waterproof function after standing and waiting for solidification of the glue.

The embodiment of the utility model is suitable for various situations of a plurality of wire harnesses 2, has low requirements on the number and thickness of the wire harnesses 2, can be used only by setting the opening diameter of the U-shaped groove 3.3 to be larger than the diameter of the wire harnesses 2, can avoid the problem of opening the mould for different wire harnesses 2, and has no need of the same number of the wire harnesses 2 as the U-shaped groove 3.3, thereby meaning that a plurality of wire harness modes can be arranged and combined; meanwhile, as the opening of the U-shaped groove 3.3 is designed to be open, threading is not needed, and installation is not affected even if a large connecting piece is arranged at the tail end of the wire harness 2.

Several combinations are typical of the embodiment of the present utility model as shown in fig. 6:

(1) as shown in fig. a and b, the wire harnesses are arranged in thicker wire harnesses, one wire harness is arranged in each notch, and 1-9 wire harnesses can be placed in 9 notches;

(2) if the figure c is a slightly thinner wire harness arrangement, one wire harness is arranged in each notch, and 1-9 wire harnesses can be placed in 9 notches;

(3) as shown in fig. d and e, each notch can be used for 1-3 wire harnesses, and 1-27 wire harnesses can be placed in 9 notches;

(4) fig. f shows a hybrid of different thickness strands.

The glue can fill the gap between the wire harness and the U-shaped groove, and also can fill the U-shaped groove without the wire harness, so that the tightness can be ensured.

Referring to fig. 4 and 6, the diameters of the plurality of U-shaped grooves 3.3 are gradually reduced from inside to outside along the radial direction of the wire fixing structure 3, so that the radius of the opening of the U-shaped groove 3.3 is smaller than the diameter of the inside of the groove, and the wire harness 2 can be wrapped in the U-shaped groove 3.3, so that the U-shaped groove 3.3 is not easy to fall out, the joint is smoothly transited, the bending radius of the wire harness is ensured, the wire harness is not damaged by corners, the installation is more convenient, and the glue sealing is also convenient.

Referring to fig. 6, the number of the plurality of U-shaped slots 3.3 is determined according to the actual requirement and the number and the size of the wire harness 2 to be perforated, so that the installation is convenient, the number of the common U-shaped slots 3.3 can be 2 or 9, and the number of the specific U-shaped slots 3.3 to be arranged can be determined according to the actual requirement. The diameters of the plurality of U-shaped grooves 3.3 can be identical or not identical, the plurality of U-shaped grooves 3.3 with the same diameter are suitable for the situation that the wire harnesses 3 needing the through holes are uniform in thickness, the plurality of U-shaped grooves 3.3 with the not identical diameter are suitable for the situation that the wire harnesses 3 needing the through holes are nonuniform in thickness, and the diameter of the plurality of U-shaped grooves 3.3 can be determined according to specific requirements.

Referring to fig. 4 and 5, the diameter of the head end 3.2 of the wire fixing structure 3 is larger than the diameter of the middle end 3.4, and the diameter of the tail end 3.5 is not larger than the diameter of the middle end 3.4. The structure design is convenient to assemble and relatively stable in structure by clamping the wire fixing groove 3 on two sides of the fixed object 4 through the diameter difference of two ends of the wire fixing groove 3. The diameter of the end 3.5 of the wire fixing structure 3 can be equal to the diameter of the middle end 3.4 or smaller than the diameter of the middle end 3.4, and the design is convenient for installation.

Referring to fig. 1 and 3, the aperture of the first through hole 1.3 at one side towards the head end 3.2 is larger than the aperture of the other side thereof, and the hole of the first through hole 1.3 on the sealed cover 1 at the side towards the head end 3.2 is a part matched with the head end 3.2 of the wire fixing structure 3, and the aperture at the side is matched with the head end 3.2; the hole of the other side of the first through hole 1.3 on the sealing cover 1 is used for allowing the wire harness 2 to pass through, the aperture of the side is larger than the diameter of the plurality of wire harnesses 2 together, so that the arrangement of the first through hole 1.3 towards the head end 3.2 on one side is larger than the aperture of the other side is more reasonable, and the structure design is convenient for sealing.

Referring to fig. 1 and 4, the head end 3.2 is provided with a fixing portion 3.1 coaxial therewith, and the fixing portion 3.1 is used for assisting the wire harness 2 to be fixed and pass through the sealing cover 1. According to the embodiment of the utility model, the fixing part 3.1 coaxial with the fixing part is arranged at the head end 3.2 of the wire fixing structure 3, after the multi-strand wire harness 2 is placed in the U-shaped groove 3.3, the wire harness 2 is bound on the fixing part 3.1, the fixing part 3.1 can assist in fixing the multi-strand wire harness 2, the multi-strand wire harness 2 is bound on the fixing part 3.1 to pass through the sealing cover 1, so that the arrangement of the multi-strand wire harness 2 is facilitated, and the installation is convenient.

Referring to fig. 3, a sealing cover 1 of the embodiment of the present utility model is provided with a plurality of exhaust holes 1.2. When the exhaust hole 1.2 is used for glue filling, air in the sealing cover is exhausted, so that the cavity and the gap are filled with glue conveniently, and the tightness is ensured.

Referring to fig. 3, a sealing cover 1 is in snap connection with a wire fixing groove 3, a plurality of clamping blocks are arranged on the inner wall of the sealing cover 1, a bayonet is arranged on the wire fixing groove 3, and the sealing cover 1 is clamped on the wire fixing groove 3.

According to the embodiment of the utility model, the sealing cover 1 is connected to the wire fixing groove 3 in a buckling manner, so that the sealing cover 1 can be prevented from loosening, and the sealing cover 1 can be prevented from rotating by combining with solidified glue, so that the sealing cover 1 is not easy to fall off, and the structure is fixed and reliable.

Referring to fig. 1 and 5, the cover 5 is a nut, the end 3.5 of the wire fixing structure 3 is provided with an external thread 3.7 adapted to the cover 5, the external thread 3.7 is disconnected by a plurality of U-shaped grooves 3.3, but the thread function is continuous, i.e. the cover 5 is screwed on the end 3.5 of the wire fixing structure 3. The threaded connection mode is more convenient, easy operation, and the cost of manufacture of structure is also low.

While the utility model has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present utility model. Accordingly, the scope of the utility model is defined by the appended claims.

Claims

1. The multi-strand wire harness via hole sealing waterproof structure is characterized by comprising a sealing cover (1), a wire fixing structure (3) and a sealing cover (5);

the edge of the wire fixing structure (3) is provided with a plurality of U-shaped grooves (3.3) with outward openings, a wire harness (2) is placed in the plurality of U-shaped grooves (3.3) and penetrates through the wire fixing structure (3), the wire fixing structure (3) is provided with a preformed hole (4.1) for the wire harness (2) to penetrate through a fixed object (4), the head end (3.2) and the tail end (3.5) of the wire fixing structure (3) are respectively located on two sides of the fixed object (4), the middle end (3.4) of the wire fixing structure (3) is located in the preformed hole (4.1), and the middle end (3.4) is matched with the preformed hole (4.1) in size;

the sealing cover (1) is provided with a first through hole (1.3), the first through hole (1.3) penetrates through the wire harness (2) and is sleeved on the head end (3.2), and the sealing cover (1), the head end (3.2) and the fixture (4) form an inner cavity;

the sealing cover (5) is provided with a second through hole (5.1), and the sealing cover (5) penetrates through the wire harness (2) through the second through hole (5.1) to be detachably covered on the tail end (3.5);

the sealing cover (1) is provided with a glue spraying opening (1.1), and the glue spraying opening (1.1) is communicated with the inner cavity.

2. The sealing waterproof structure according to claim 1, characterized in that the diameters of the plurality of U-shaped grooves (3.3) decrease gradually from inside to outside along the radial direction of the wire fixing structure (3).

3. The sealing waterproof structure according to claim 1, characterized in that the number of U-shaped grooves (3.3) satisfy at least one of the following conditions:

the number of the U-shaped grooves (3.3) is 2;

the number of the U-shaped grooves (3.3) is 9.

4. The sealing waterproof structure according to claim 1, characterized in that the number of U-shaped grooves (3.3) satisfy at least one of the following conditions:

the diameters of the U-shaped grooves (3.3) are the same;

the diameters of the U-shaped grooves (3.3) are not identical.

5. The sealing waterproof structure according to claim 1, characterized in that the head end (3.2) has a diameter greater than the diameter of the middle end (3.4), the diameter of the tail end (3.5) not being greater than the diameter of the middle end (3.4).

6. The sealing waterproof structure according to claim 1, characterized in that the first through hole (1.3) has a larger pore diameter on the side facing the head end (3.2) than on the other side thereof.

7. The sealing waterproof structure according to claim 1, characterized in that the head end (3.2) is provided with a fixing portion (3.1) coaxial therewith, the fixing portion (3.1) being for assisting the wire harness (2) to be fixed and penetrating the sealing cover (1).

8. The sealing waterproof structure according to claim 1, wherein a plurality of vent holes (1.2) are provided on the sealing cover (1).

9. The sealing waterproof structure according to claim 1, characterized in that the sealing cap (1) is snap-connected to the head end (3.2).

10. The sealing waterproof structure according to claim 1, characterized in that the cover (5) is an internally threaded nut, and the tip (3.5) is provided with external threads (3.7) adapted to the cover (5).