TWI737169B - Mounting structure, wire mounting structure and manufacture method thereof - Google Patents

Abstract

A positioning structure is arranged on the surface of the electric wire, and includes a fixing piece, an O-ring, another fixing piece sequentially sleeved on the electric wire, and the mounting piece is embedded and covered with the above-mentioned components. When forming the mounting part, plastic will fill the gap between the O-ring and the fixing part, making it difficult for the internal components to move along the surface of the wire, and ensuring that the internal components will not fall off due to external forces.

Description

Positioning structure, wire positioning structure and manufacturing method thereof

The present invention relates to a wire structure, and more precisely, to a wire positioning structure that is waterproof and resistant to push and pull.

When the metal terminal at the end of the wire is electrically connected to another electronic component, the wire behind the terminal will be positioned around the electronic component at the same time to prevent the electrically connected part from being pulled off by external force.

If it is installed in a precision component, the metal terminal will also be designed to pass through the wire entry hole of the protective shell, so that the metal terminal is connected to the electronic component in the shell. Furthermore, in order to completely isolate the external water vapor, the wire surface where the terminal is set will also be installed O-ring seals the wire hole. However, this installation method makes the volume of the metal terminal necessarily smaller than the O-ring to ensure that the terminal can completely pass through the wire hole. Therefore, the tight fit of the O-ring alone cannot completely prevent the wire from being pulled off by external force or prevent it from being pulled off. And cause the loss of waterproof function.

Based on the above objective, the present invention provides a wire positioning structure, which has the functions of waterproof and anti-push-pull at the same time.

According to the objective of the present invention, there is provided a positioning structure installed on an electric wire, including an internal structure and a mounting member. The internal structure includes a fixing piece, an O-ring, and another fixing piece sequentially sheathed on the wire. The mounting part is embedded to cover the internal structure, and a plurality of grooves are formed on the surface of the mounting part to be positioned in a positioning hole of the protective shell.

Further, the fixing member of the internal structure has a cylindrical appearance, and the profile of its cross section is larger than that of the O-ring, so that the plastic can be filled between the O-ring and the fixing member when it is buried and exited, preventing the internal structure of the mounting member from being externally exposed. Pull the wire out of the mounting part. In addition, the fixing member can also have the appearance of a right-angle column to prevent the external wires from being torsionally worn and aging.

In addition, the groove on the surface of the mounting member can be provided with an O-ring to seal the positioning hole of the protective housing. The groove can also be used to install a positioning member to position a part of the mounting member inside the protective housing.

Based on the above objective, the present invention further provides a method for manufacturing an electric wire, which includes the following steps: two fixing parts and an O-ring are arranged on the surface of the electric wire, so that the O-ring is located between the two fixing parts; The fixing part and the O-ring form a mounting part, and at least one groove is formed on the surface of the mounting part.

10: Wire

20: Terminal

30, 60: O-ring

21, 40: metal buckle

50: Mounting parts

51: backend

52: front end

55, 56: Groove

70: Connector

80: Positioning perforation

81: U-shaped fastener

Figure 1 is a schematic diagram of the terminal wire positioning structure.

Fig. 2 is a schematic diagram of the installation of the terminal wire shown in Fig. 1.

Fig. 3 is a sectional view of the installation of the terminal wire shown in Fig. 1.

Figure 4 is a schematic diagram of the connector wire positioning structure.

Please refer to Figures 1 to 3, the wire positioning structure is shown as an example of the wiring terminal connected to the stator of the motor. During installation, the metal terminal 20 of the wire 10 will pass through the positioning of the motor protective housing (as shown in Figure 2). The through hole 80 is electrically connected to the conductive element of the inner stator. In this embodiment, the end of the wire mounting metal terminal is used as the front end for description, so as to meet the common understanding of those skilled in the art.

The wire positioning structure includes an internal structure and a mounting member 50 that is embedded to cover the internal structure. The internal structure consists of a metal buckle 40, an O-ring 30, and a terminal 20 that are sequentially inserted from the front end of the wire and positioned on the surface of the wire. The appearance of the installation part of the metal buckle 40 and the terminal 20 is slightly cylindrical, which is used as an O-shape. Ring 30 is a fixture on the opposite sides of the ring 30.

Since the mounting part of the metal buckle 40, O-ring 30, and terminal 20 forms a discontinuous surface on the surface of the wire, when the mounting member 50 is embedded in the internal structure, plastic can fill the mounting part of the metal buckle 40, O-ring 30, and terminal 20 The gap between the internal structure is not easy to be dragged out of the mounting member 50 by external wires, which has an anti-dragging effect, and the O-ring 30 inside the mounting member 50 can prevent moisture from entering the protective housing from the inside of the mounting member 50. In addition, the metal buckle 40 has the appearance of a right-angled post, which can prevent the external wires from twisting and causing the internal wear and aging of the mounting member 50.

The mounting member 50 has a slightly cylindrical appearance, and is used for positioning the embedded electric wire in the motor protection housing. The front end 52 of the mounting member 50 completely covers the front end of the wire 10 and the mounting part of the terminal 20, and the rear end 51 of the mounting member 50 is radially projected with a stopper. Two annular grooves 55, 56 are used to locate the O-ring 60 and the U-shaped fastener 81. Please refer to the installation cross-sectional view of FIG. 3, after the terminal 20 passes through the positioning hole 80, the rear end 51 of the mounting member 50 is locked on the outer side of the protective housing. The fastener 81 is installed in the annular groove 56. At this time, the installation piece 50 at the front end of the annular groove 56 will be restricted to the inner side of the protective shell. The annular groove 55 of the member 50 is located on the inner ring wall of the positioning through hole 80 to seal the positioning through hole 80 through the O-ring 60 to prevent moisture from entering the protective housing from the outside of the mounting member 50.

Please refer to FIG. 4, the cable fixing device is illustrated with a connector cable as an example. The internal structure is set on the surface of the cable embedded with a plurality of wires, and the cable connector 70 is installed at the front end of the cable. The difference from the previous embodiment is that the present embodiment uses metal buckles 21 and 40 as the two fixing parts on the two sides of the O-ring 30, and the cross-sectional profile of the two fixing parts is larger than that of the O-ring 30. When embedding and molding, the plastic fills the surface of the two sides of the O-ring, so that the internal structure is not easily pulled out of the mounting member 50.

In other embodiments, the middle section of the mounting member 50 may be provided with a groove. After the middle section of the mounting member 50 passes through the positioning hole 80, the groove will be located on the inner side of the protective shell and the U-shaped fastener 81 is installed so that A part of the mounting member 50 is locked on the surface of the protective shell, and only the O-ring 30 of the internal structure is used to block external moisture.

The present invention also discloses a method for manufacturing an electric wire, which includes the following steps:

In step S10, two fixing members and an O-ring 30 are arranged on the surface of the wire 10 so that the O-ring 30 is located between the two fixing members. Depending on the type of the wire, the fixing member may be a metal ring or a terminal connection part. The fixing piece has a columnar appearance and the cross section is larger than the O-ring, so that the fixing piece is adjacent to the side surface of the O-ring and forms a cross-section with the two sides of the O-ring.

In step S20, the two fixing parts and the O-ring 30 are embedded and covered to form the mounting part 50. Since the plastic will fill up the gap between the fixing part and the O-ring 30, it is not easy for the fixing parts inside the mounting part 50 and the O-ring 30 Pull out the outside of the mounting member 50 by an external force. A groove may also be formed on the surface of the mounting member 50 to be installed or positioned on the mounting seat of the protective housing. The groove on the surface of the mounting member 50 can also be provided with a waterproof member to ensure that moisture is blocked, or a positioning member can be provided to lock the mounting member 50 on the mounting seat.

10: Wire 20: Terminal 30: O-ring 40: Metal buckle 50: Mounting parts 51: backend 52: front end 55, 56: Groove

Claims (9)

A positioning structure installed on a wire, comprising: an O-ring sleeved on the surface of the wire; at least two fixing parts located on two sides of the O-ring; and a mounting part with at least one concave on the surface of the mounting part Grooves, and the mounting part is embedded by injection molding to cover the O-ring and the fixing parts. The positioning structure according to claim 1, wherein a waterproof member or a positioning member is provided on the surface of the mounting member. The positioning structure according to claim 1, wherein the contours of the fixing parts are larger than the O-ring. The positioning structure according to claim 1, wherein the surface of the O-ring and the fixing parts form a discontinuous surface. According to the positioning structure according to any one of claims 1 to 4, at least one of the fixing members is in the shape of a corner column. An electric wire comprising the positioning structure described in any one of Claims 1 to 5. A method for manufacturing an electric wire includes: arranging two fixing parts and an O-ring on the surface of an electric wire so that the O-ring is located between the fixing parts; and embedding and coating the two fixing parts and the O-ring The ring forms a mounting member, and at least one groove is formed on the surface of the mounting member. The manufacturing method according to claim 7, wherein the groove is a ring-shaped groove. The manufacturing method according to claim 7, wherein the contours of the fixing members are larger than the O-ring.

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