JP6900823B2 - How to attach coaxial cable to electrical connector, waterproof connector, electrical connector - Google Patents

Description

The present invention relates to an electric connector, a waterproof connector, and a method of attaching a coaxial cable to the electric connector.

In a coated electric wire in which a conductor obtained by twisting a plurality of strands is covered with a coating, water may condense in the gap between the strands. A connector is known that can seal the connection portion between the conductor and the terminal of the coated electric wire so that the water condensed in the gap between the wires of the coated electric wire does not enter the inside of the connector to which the coated electric wire is attached.

Patent Document 1 includes a terminal fitting having a tubular main body, a crimping portion crimped to a conductor of a covered electric wire, and a connecting portion arranged between the main body and the crimping portion, and a main body attached to the connecting portion. Disclosed is a connector comprising a stop portion capable of stopping the flow between the portion and the crimp portion, and a connector housing having a cavity for accommodating a terminal fitting. Injection holes for injecting the sealing material are formed in the connector housing. The inlet of the injection hole opens on the outer surface of the connector housing. The outlet of the injection hole opens at a position facing the crimping portion on the inner surface of the cavity.

Japanese Patent No. 5601107

In the connector having the structure disclosed in Patent Document 1, it is necessary to incorporate in the connector a stopper for stopping the sealing material when sealing the connection portion between the conductor and the terminal of the coated electric wire at the time of assembly. Terminals are attached to this stopper in advance. Therefore, when incorporating the stopper into the connector, care must be taken so that the terminal does not come into contact with the connector and the terminal is not deformed. Therefore, the above-mentioned connector has a problem that the work of incorporating the stopper portion, which is a member for stopping the flow of the sealing material, into the connector is complicated.

The present invention has been made under the above circumstances, and an object of the present invention is to provide a method for attaching a coaxial cable to an electric connector, a waterproof connector, and an electric connector to which a member for stopping the flow of a sealing material can be easily attached. And.

In order to achieve the above object, the electric connector according to the first aspect of the present invention is
A central terminal having a connection portion connected to the central conductor of the coaxial cable and a contact portion in contact with the mating terminal.
A contact accommodating space accommodating the contact portion of the central terminal and a sealing space communicating with the contact accommodating space to accommodate the connection portion and having a diameter larger than that of the contact accommodating space are formed, and the contact is formed. A first opening communicating between the accommodating space and the sealing space and a second opening for injecting a sealing material into the sealing space are formed on the side wall and are composed of a dielectric material. Cylindrical body and
By being inserted into the first opening, it is arranged between the contact accommodating space and the sealing space, separates the contact accommodating space and the sealing space, and stops the flow of both spaces. And.

The sealing space may accommodate a connecting portion between the connecting portion and the central conductor of the coaxial cable, and the sealing material for sealing the connecting portion may be arranged.

The sealing space further covers the central conductor, further accommodates a covering portion composed of a dielectric, and the outer conductor of the coaxial cable, and seals the covering portion, the outer conductor, and the connection portion. It is advisable to arrange a sealing material to stop.

A part of the side surface of the contact accommodation space is connected to a part of the side surface of the sealing space, and the central terminal is connected to a part of the side surface of the contact accommodation space and a part of the side surface of the sealing space. The first opening, which is arranged in contact with each other, may be formed on a surface facing a part of the side surface of the contact accommodating space and the sealing space.

The isolation plate may have a recess into which a part of the central terminal is inserted.

The isolation plate may come into contact with a portion of the central terminal between the connection portion and the contact portion.

The central conductor of the coaxial cable is connected to the connection portion,
It is preferable that the sealing material is arranged in the sealing space.

The sealing material may be composed of an acrylic adhesive.

A ground terminal having a tubular shape for accommodating the tubular body and connected to the outer conductor of the coaxial cable,
A fixing member composed of a dielectric, which has the isolation plate and is arranged so as to cover the outside of the ground terminal.
The ground terminal has a third opening that communicates with the first opening.
The isolation plate is arranged in the first opening of the tubular body via the third opening.
The ground terminal has a fourth opening communicating with the second opening.
The fixing member may have a second opening and a fifth opening communicating with the fourth opening.

In order to achieve the above object, the waterproof connector according to the second aspect of the present invention is
With the electrical connector
A housing in which a connector accommodating space for accommodating the electric connector is formed, and
A waterproof material arranged in the gap between the electric connector and the connector accommodating space,
To be equipped.

In order to achieve the above object, the method of attaching the coaxial cable to the electric connector according to the third aspect of the present invention is described.
A connection step of connecting the center conductor of the coaxial cable to the connection part of the center terminal having a connection part connected to the center conductor of the coaxial cable and a contact part contacting the other side terminal.
The contact portion of the central terminal to which the central conductor is connected is housed in a contact accommodating space provided in a tubular body made of a dielectric material, and the connecting portion is communicated with the contact accommodating space. The accommodation process of accommodating in a sealing space with a larger diameter than the contact accommodating space,
An isolation plate is inserted from a first opening communicating between the contact accommodating space and the sealing space of the tubular body in which the central terminal is arranged, and the contact accommodating space and the sealing space are separated from each other. Separation plate insertion process to isolate and stop the flow of both spaces,
The sealing material is filled in the sealing space through a second opening communicating with the sealing space of the tubular body into which the isolation plate is inserted, and the connection portion is connected to the central conductor of the coaxial cable. It comprises a sealing step of sealing the portion.

According to the present invention, the tubular body has a contact accommodating space for accommodating the contact portion and a sealing space accommodating the connecting portion and having a diameter larger than that of the contact accommodating space. When the separating plate is arranged between the contact accommodating space and the sealing space, the contact accommodating space and the sealing space are separated, function as a member for stopping the flow of the sealing material, and the flow of both spaces is stopped. .. Therefore, according to the present invention, it is possible to provide a method of attaching a coaxial cable to an electric connector, a waterproof connector, and an electric connector to which a member for stopping the flow of a sealing material can be easily attached.

(A) and (B) are a front perspective view and a rear perspective view of an in-vehicle camera to which the waterproof connector according to the embodiment of the present invention is attached. (A) is a view showing the back surface of the vehicle-mounted camera to which the waterproof connector according to the present embodiment is attached, and (B) is a sectional view taken along the line AA of FIG. 2 (A). (A) is a view which shows the back surface of the waterproof connector which concerns on embodiment of this invention, and (B) is the sectional view of BB of FIG. 3 (A). (A) is a front view before injecting a sealing material into the electric connector according to the embodiment of the present invention, (B) is a sectional view taken along the line CC of FIG. 4 (A), and (C). ) Is a front view after injecting a sealing material into the electric connector according to the embodiment of the present invention, and FIG. 4D is a cross-sectional view taken along the line DD of FIG. 4C. (A) is a view before connecting the central terminal according to the embodiment of the present invention and the central conductor of the coaxial cable, and (B) is the center of the central terminal and the coaxial cable according to the embodiment of the present invention. It is a figure after connecting a conductor. (A) is a top view of the tubular body according to the embodiment of the present invention, (B) is a view showing the tubular body according to the embodiment of the present invention, and (C) is the present invention. It is a front view of the tubular body which concerns on embodiment of the invention, (D) is the EE sectional view of FIG. 6 (C), (E) is the FF sectional view of FIG. 6 (A). FIG. 6 (F) is a sectional view taken along line GG of FIG. 6 (A). It is a figure which shows the tubular body and the ground terminal which concerns on embodiment of this invention. (A) is a top view of the fixing member according to the embodiment of the present invention, (B) is a view showing the fixing member according to the embodiment of the present invention, and (C) is a view showing the fixing member according to the embodiment of the present invention. It is a front view of the fixing member which concerns on embodiment, (D) is a side view of the fixing member which concerns on embodiment of this invention, (E) is a side view of the fixing member which concerns on embodiment of this invention. It is a bottom view, (F) is a figure which shows the fixing member which concerns on embodiment of this invention. FIGS. (A) to (C) are diagrams illustrating a method of attaching the coaxial cable according to the embodiment of the present invention to the ground terminal. (A) and (B) are diagrams for explaining the method of attaching the fixing member according to the embodiment of the present invention to the ground terminal and the tubular body. (A) is a diagram showing an electric connector according to an embodiment of the present invention, (B) is a sectional view taken along the line HH of FIG. 11 (A), and (C) is a sectional view taken along the line 11 (A). It is a cross-sectional view taken along the line I-I, and FIG. 11 (D) is a cross-sectional view taken along the line JJ of FIG. 11 (A). FIGS. (A) to (C) are diagrams illustrating a method of attaching an electric connector according to an embodiment of the present invention to a housing.

Hereinafter, the electric connector and the waterproof connector according to the embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1A and 1B, the waterproof connector 10 according to the present embodiment connects the vehicle-mounted camera 1 and the coaxial cable C. As shown in FIG. 2A, a waterproof connector 10 is attached to the back surface (coaxial cable C side) of the vehicle-mounted camera 1. As shown in FIG. 2B, the in-vehicle camera 1 includes a lens 2, an image pickup element 3 in which a subject image is formed on an image pickup surface by the lens 2, and a circuit board 4 electrically connected to the image pickup element 3. The internal connector 5 connected to the circuit board 4, the mating connector 6 connected to the waterproof connector 10, the coaxial cable 7 connecting the internal connector 5 and the mating connector 6, and these configurations are accommodated. It includes a camera housing 8. The image pickup device 3 converts the imaged subject image into an electric signal and outputs it to the circuit board 4. The circuit board 4 outputs the electric signal output from the image pickup device 3 to the coaxial cable C connected to the waterproof connector 10 via the coaxial cable 7.

As shown in FIG. 3A, the waterproof connector 10 is attached to the back surface (coaxial cable C side) of the camera housing 8. As shown in FIG. 3B, the waterproof connector 10 is a waterproof material 13 that seals the electric connector 100, the housing 11 accommodating the electric connector 100, the electric connector 100, and the coaxial cable C in the housing 11 to waterproof the housing 11. And. The waterproof material 13 is composed of a polyamide-based hot melt adhesive or a polyurethane-based hot melt adhesive, and is formed by hot melt molding. The housing 11 is formed with a groove 15 for arranging the O-ring 14 on the contact surface that comes into contact with the camera housing 8. An O-ring 14 is arranged in the groove 15 of the waterproof connector 10, and the waterproof connector 10 is screwed to the camera housing 8 with a screw 16. As a result, the connection portion between the electric connector 100 and the mating connector 6 is sealed by the waterproof connector 10 and the O-ring 14.

As shown in FIGS. 4A to 4D, the electric connector 100 includes a central terminal 110, a tubular body 120 accommodating the central terminal 110, and a tubular ground terminal accommodating the tubular body 120. A 140 and a fixing member 150 arranged so as to cover the outside of the ground terminal 140 are provided. The center terminal 110 has a contact portion 111 that contacts the mating connector 6 and a connection portion 112 that connects to the center conductor E of the coaxial cable C. The tubular body 120 is formed with a contact accommodating space 121 accommodating the contact portion 111 and a sealing space 122 accommodating the connecting portion 112. An isolation plate 130 attached to the fixing member 150 is arranged between the contact accommodating space 121 and the sealing space 122. As shown in FIG. 4 (B), when the isolation plate 130 is arranged between the contact accommodating space 121 and the sealing space 122 and the sealing material 160 is injected into the sealing space 122, it is shown in FIG. 4 (D). As described above, the electric connector 100 in which the sealing material 160 is arranged is obtained. The sealing material 160 is composed of an acrylic adhesive.

As shown in FIGS. 5A and 5B, the center terminal 110 includes a contact portion 111 that contacts the male terminal of the mating connector 6 arranged in the camera housing 8 and the center conductor of the coaxial cable C. It has a connecting portion 112 connected to E, and is composed of a metal plate such as a copper plate or an aluminum plate. Between the contact portion 111 and the connection portion 112, a constriction portion 113 that is thinner than the contact portion 111 and the connection portion 112 is provided. The contact portion 111 has a base portion 114 connected to the constricted portion 113 and a pair of holding pieces 115 for sandwiching the male terminal. The connecting portion 112 is a portion connected to the central conductor E of the coaxial cable C, and has a base portion 116 connected to the constricted portion 113 and a pair of metal pieces 117 for crimping the central conductor E. The constricted portion 113 and the base portions 114 and 116 are connected in a flat plate shape. When the center conductor E is arranged at the connection portion 112 of the center terminal 110 shown in FIG. 5 (A), the metal piece 117 is crimped and the center conductor E is crimped, the center conductor E is connected to the center terminal 110, and FIG. 5 (B) ), A central terminal 110 to which the central conductor E of the coaxial cable C is connected is obtained. The central terminal 110 is housed in the tubular body 120 shown in FIG. 4 (B).

As shown in FIGS. 6 (A) to 6 (F), the tubular body 120 shown in FIG. 4 (B) has a tubular shape accommodating the central terminal 110, and is a dielectric material such as a resin. Consists of. As shown in FIG. 6D, the tubular body 120 communicates with the contact accommodating space 121 and the contact accommodating space 121 to accommodate the connection portion 112, and is a sealing space having a diameter larger than that of the contact accommodating space 121. 122 and are formed. The tubular body 120 has a first opening 123 into which the isolation plate 130 arranged between the contact accommodating space 121 and the sealing space 122 is inserted, and a second opening into which the sealing material 160 is injected. Part 124 and are formed. The first opening 123 and the second opening 124 are formed side by side to form one opening. The sealing space 122 shown in FIG. 4B covers the connection portion between the connection portion 112 of the center terminal 110 and the center conductor E of the coaxial cable C and the center conductor E, and is composed of a dielectric material. And the end of the outer conductor G of the coaxial cable C. In the sealing space 122 shown in FIG. 4D, a sealing material 160 that seals the connecting portion, the covering portion H, and the outer conductor G is arranged. The contact surface 125 with which the bottom surface of the base 114 of the central conductor 110 arranged in the contact accommodation space 121 contacts is connected to the contact surface 126 with which the bottom surface of the base 116 of the center conductor 110 arranged in the sealing space 122 contacts. .. The contact surface 125 of the contact accommodation space 121 and the contact surface 126 of the sealing space 122 are arranged so that the bottom surface of the constricted portion 113 of the central terminal 110 and the bottom surfaces of the base portions 114 and 116 are in contact with each other. The first opening 123 is provided at a position facing the portion of the central terminal 110 where the constricted portion 113 is arranged. The second opening 124 is formed so as to face the contact surface 126 of the sealing space 122. As shown in FIG. 6 (E), the contact surface 126 on which the constricted portion 113 of the central terminal 110 is arranged is provided with a pair of holes 127 into which the protrusion 132 provided on the isolation plate 130, which will be described later, is inserted. ing. On the side wall of the tubular body 120 shown in FIGS. 6 (A) to 6 (C), a locking portion 128 that engages with the ground terminal 140 is provided.

As shown in FIG. 7, the ground terminal 140 connects the outer conductor G of the coaxial cable C and the mating connector 6, and is composed of a metal plate such as a copper plate or an aluminum plate. The ground terminal 140 is connected to the tubular portion 141 accommodating the tubular body 120, the connecting portion 142 connected to the outer conductor G, the contact portion 143 contacting the mating terminal, and the ground terminal 140 for transportation. It has a carrier portion 144 for the purpose. The tubular portion 141 includes a third opening 145 communicating with the first opening 123 of the tubular body 120, a fourth opening 146 communicating with the second opening 124, and the tubular body 120. It has a locking hole 147 into which the locking portion 128 of the above is fitted.

As shown in FIGS. 8 (A) to 8 (F), the fixing member 150 is fixed so as not to come off from the housing 11 when the electric connector 100 is inserted into the housing 11, and is attached to the isolation plate 130. , A fifth opening 151, a pair of arms 152 that sandwich the ground terminal 140, a convex portion 153, and a stopper portion 154 that is locked to a locking portion provided inside the connector accommodating space 12 of the housing 11. , Equipped with. The separating plate 130 is arranged between the contact accommodating space 121 and the sealing space 122, isolates the contact accommodating space 121 and the sealing space 122, and stops the circulation of both spaces. As shown in FIG. 8C, the isolation plate 130 has a recess 131 in which a part of the central terminal 110 is inserted, and a pair of protrusions 132 that fit into the holes 127 provided in the tubular body 120. The concave portion 131 is formed in a shape that fits into the constricted portion 113 between the connecting portion 112 and the contact portion 111 of the central terminal 110. The fifth opening 151 communicates with the second opening 124 and the fourth opening 146. The convex portion 153 is provided on the arm 152, and when the electric connector 100 is inserted into the housing 11, the distance between the inner wall of the connector accommodating space 12 of the housing 11 and the fixing member 150 is kept constant. The stopper portion 154 prevents the electric connector 100 from coming off from the housing 11 when the electric connector 100 is inserted into the housing 11. The isolation plate 130 is arranged in the first opening 123 of the tubular body 120 via the third opening 145 of the ground terminal 140.

Next, a method of attaching the coaxial cable C to the electric connector 100 will be described with reference to the drawings.

The method of attaching the coaxial cable C to the electric connector 100 includes a connection step, a tubular body insertion step, a housing step, a separating plate insertion step, and a sealing step.

First, a connection step of connecting the center conductor E of the coaxial cable C to the center terminal 110 is performed. As shown in FIG. 5A, the central conductor E of the coaxial cable C is arranged at the connection portion 112 of the central terminal 110. Next, a pair of metal pieces 117 provided on the connecting portion 112 are crimped. When the pair of metal pieces 117 are crimped, the center conductor E is connected to the connecting portion 112 of the center terminal 110 as shown in FIG. 5 (B).

Next, a tubular body insertion step of inserting the tubular body 120 into the ground terminal 140 is performed. The tubular body 120 shown in FIG. 7 is inserted into the tubular portion 141 of the ground terminal 140. At this time, the first opening 123 of the tubular body 120 communicates with the third opening 145 of the ground terminal 140, and the second opening 124 of the tubular body 120 is the fourth opening of the ground terminal 140. The position of the tubular body 120 is adjusted so as to communicate with 146. When the tubular body 120 is inserted into the tubular portion 141 of the ground terminal 140, the locking portion 128 of the tubular body 120 fits into the locking hole 147 of the ground terminal 140, and the tubular body 120 is anchored to the ground terminal 140. Will be done.

Next, the accommodating step of accommodating the central terminal 110 in the tubular body 120 is carried out. The central terminal 110 to which the central conductor E of the coaxial cable C is connected is housed in the tubular body 120 inserted into the ground terminal 140 shown in FIG. 9A. At this time, the bottom surface of the base 114 of the center terminal 110 is in contact with the contact surface 125 of the contact accommodating space 121, and the bottom surface of the base 116 is the sealing space 122 so that the isolation plate 130 to be inserted later presses the center terminal 110. It is arranged so as to be in contact with the contact surface 126.

Next, a ground terminal connection step of connecting the outer conductor G of the coaxial cable C to the ground terminal 140 is performed. As shown in FIG. 9B, the connection portion 142 of the ground terminal 140 is wound around the outer conductor G. As a result, the outer conductor G is connected to the ground terminal 140. Next, the connecting portion between the ground terminal 140 and the carrier portion 144 is cut, and the carrier portion 144 is discarded. As a result, as shown in FIG. 9C, the coaxial cable C is fixed to the ground terminal 140.

Next, the fixing plate 150 is attached, the isolation plate 130 is inserted, and the isolation plate insertion step for separating the contact accommodating space 121 and the sealing space 122 is performed. The fixing member 150 shown in FIG. 10A is attached to the gland terminal 140 and the tubular body 120, and the isolation plate 130 is inserted through the third opening 145 of the gland terminal 140 to form a contact accommodating space 121 and a sealing space 122. Isolate with. When the isolation plate 130 is inserted, the recess 131 fits into the constricted portion 113 of the central terminal 110 shown in FIG. 5 (B), and the protrusion 132 of the isolation plate 130 shown in FIG. It is inserted into the hole 127 shown in (E). When the fixing member 150 is pushed into the tubular portion 141, the arm 152 opens, and when it is pushed further, the arm 152 returns. As a result, the arm 152 sandwiches the tubular portion 141 of the ground terminal 140, and the fixing member 150 is attached to the ground terminal 140 as shown in FIG. 10 (B).

Next, a sealing step of sealing the connection portion between the connection portion 112 of the center terminal 110 and the center conductor E of the coaxial cable C is performed. The sealing material 160 is injected through the fifth opening 151 of the fixing member 150 shown in FIG. 4 (D). When the sealing material 160 is injected, the connection portion between the connecting portion 112 of the center terminal 110 and the center conductor E of the coaxial cable C, the end portion of the covering portion H, and the end portion of the outer conductor G are sealed. Will be done. As a result, the electric connector 100 to which the coaxial cable C is attached is obtained.

Next, a method of attaching the coaxial cable C to the waterproof connector 10 will be described with reference to the drawings.

The method of attaching the coaxial cable C to the waterproof connector 10 is a step of inserting the electric connector 100 to which the coaxial cable C is attached into the housing 11, and arranging the waterproof material 13 in the gap between the electric connector 100 and the housing 11. It is equipped with a waterproofing process.

As shown in FIG. 12A, the electrical connector 100 is inserted into the connector accommodating space 12 of the housing 11. As shown in FIG. 12 (B), when the electric connector 100 is inserted into the connector accommodating space 12 of the housing 11, the stopper portion 154 shown in FIG. 12 (A) is provided inside the connector accommodating space 12 of the housing 11. It is locked to the locked locking portion, and the electric connector 100 is fixed so as not to come off from the housing 11. Next, the waterproof material 13 is arranged by hot melt molding in the gap between the electric connector 100 and the connector accommodating space 12 of the housing 11. As a result, as shown in FIG. 12C, a waterproof connector 10 to which the coaxial cable C is attached is obtained. As shown in FIG. 3B, the O-ring 14 is arranged in the groove 15 of the waterproof connector 10 to which the coaxial cable C is attached, and the waterproof connector 10 is attached to the camera housing 8. When the waterproof connector 10 is attached to the camera housing 8, the center terminal 110 of the electric connector 100 comes into contact with the center terminal of the mating connector 6, the ground terminal 140 comes into contact with the ground terminal of the mating connector 6, and the waterproof connector 10 becomes. It is connected to the in-vehicle camera 1. As a result, as shown in FIGS. 1 (A) and 1 (B), an in-vehicle camera 1 to which the waterproof connector 10 is attached is obtained.

As described above, in the electric connector 100 of the present embodiment, the tubular body 120 is formed with a contact accommodating space 121 accommodating the contact portion 111 and a sealing space 122 accommodating the connecting portion 112. When the separating plate 130 is arranged between the contact accommodating space 121 and the sealing space 122, the contact accommodating space 121 and the sealing space 122 are separated from each other. The isolation plate 130 is provided on the fixing member 150, and when the fixing member 150 is attached to the tubular body 120, it can be inserted through the first opening 123 and easily arranged in the tubular body 120. When the sealing material 160 is injected into the sealing space 122, the connecting portion between the connecting portion 112 and the center conductor E is sealed.

Specifically, when the isolation plate 130 is inserted through the first opening 123, as shown in FIG. 11B, the recess 131 of the isolation plate 130 fits into the constricted portion 113 of the center terminal 110 and is centered. The constricted portion 113 of the terminal 110 is sandwiched between the recess 131 of the isolation plate 130 and the contact surface 126 of the sealing space 122 of the tubular body 120. At this time, the protrusion 132 of the isolation plate 130 is inserted into the hole 127 provided in the tubular body 120. As a result, the contact accommodating space 121 and the sealing space 122 are separated, the sealing material 160 can be prevented from flowing into the contact portion 111 of the central terminal 110, and poor contact between the contact portion 111 and the mating terminal can be prevented. .. As shown in FIG. 11C, when the sealing material 160 is injected from the fifth opening 151, the fourth opening 146, and the second opening 124, the sealing material 160 and the connecting portion 112 of the central terminal 110 The connection portion of the center conductor E can be sealed. As a result, as shown in FIG. 11C, in the coaxial cable C in which the central conductor E in which a plurality of strands are twisted is covered with a coating, even if water or the like condenses in the gaps between the strands, the electric connector 100 Does not invade the contact portion 111 of.

Further, in the waterproof connector 10 having the above configuration, the waterproof material 13 is arranged in the gap between the electric connector 100 and the connector accommodating space 12 of the housing 11. As a result, the gap between the housing 11 and the electric connector 100 is waterproofed. Therefore, it is possible to provide a method of attaching the coaxial cable C to the electric connector 100, the waterproof connector 10, and the electric connector 100 which can seal the connection portion between the conductor and the terminal and can be easily attached to the conductor.

(Modification example)
In the above-described embodiment, an example in which the first opening 123 and the second opening 124 are formed side by side to form one opening has been described. The first opening 123 and the second opening 124 may be composed of independent openings. Further, in the above-described embodiment, an example in which the second opening 124 is formed on the surface of the sealing space 122 facing the contact surface 126 has been described. The second opening 124 may be provided at any position as long as the sealing material 160 can be injected into the sealing space 122.

In the above-described embodiment, an example in which the isolation plate 130 is attached to the fixing member 150 has been described. The isolation plate 130 is arranged between the contact accommodating space 121 and the sealing space 122, and it is sufficient that the contact accommodating space 121 and the sealing space 122 can be separated and the circulation of both spaces can be stopped. , It may be composed of a single member, or may be attached to a member other than the fixing member 150.

In the above-described embodiment, an example in which the central conductor E of the coaxial cable C is crimped by the metal piece 117 provided at the central terminal 110 of the electric connector 100 has been described. The center conductor E of the coaxial cable C and the center terminal 110 may be connected by a method other than crimping, and may be connected by, for example, soldering.

In the above-described embodiment, an example in which the contact portion 111 of the electric connector 100 comes into contact with the male terminal has been described. The contact portion 111 is not limited to the case where it contacts the male terminal, and the contact portion 111 may include a male terminal that contacts the female terminal, or may include other terminals such as a round terminal and a quat-shaped terminal. Good. Further, the contact portion 111 may be directly electrically connected to a circuit board or the like. Although the example in which the center conductor E is a stranded wire made up of many strands has been described, the connection portion between the center conductor E and the center terminal 110 can be similarly sealed even with a single conductor.

In the above-described embodiment, an example in which the sealing material 160 is composed of an acrylic adhesive has been described. The sealing material 160 may be composed of, for example, a polyamide-based hot melt adhesive or a polyurethane-based hot melt adhesive, as long as it can seal the connection portion between the center conductor E and the center terminal 110. Further, in the above-described embodiment, an example in which the waterproof material 13 of the waterproof connector 10 is composed of a polyamide-based hot melt adhesive or a polyurethane-based hot melt adhesive has been described. The waterproof material 13 may be made of an acrylic adhesive, for example, as long as the gap between the electric connector 100 and the connector accommodating space 12 of the housing 11 can be waterproofed.

In the above-described embodiment, an example in which the electric connector 100 attaches the coaxial cable C to the vehicle-mounted camera 1 has been described. The electric connector 100 may be used to attach the coaxial cable C to an electronic device or an electric device other than the vehicle-mounted camera 1.

The present invention allows for various embodiments and modifications without departing from the broad spirit and scope of the invention. Moreover, the above-described embodiment is for explaining the present invention, and does not limit the scope of the present invention. That is, the scope of the present invention is indicated not by the embodiment but by the claims. Then, various modifications made within the scope of the claims and the equivalent meaning of the invention are considered to be within the scope of the present invention.

The present invention can be applied to electronic devices or electric connectors and waterproof connectors used as parts of electronic devices.

1 ... In-vehicle camera, 2 ... Lens, 3 ... Imaging element, 4 ... Circuit board, 5 ... Internal connector, 6 ... Mating connector, 7 ... Coaxial cable, 8 ... Camera housing, 10 ... Waterproof connector, 11 ... Housing, 12 ... Connector accommodation space, 13 ... Waterproof material, 14 ... O ring, 15 ... Groove, 16 ... Screw, 100 ... Electrical connector, 110 ... Central terminal, 111 ... Contact part, 112 ... Connection part, 113 ... Constriction part, 114 , 116 ... base, 115 ... holding piece, 117 ... metal piece, 120 ... tubular body, 121 ... contact accommodating space, 122 ... sealing space, 123 ... first opening, 124 ... second opening, 125 , 126 ... contact surface, 127 ... hole, 128 ... locking part, 130 ... isolation plate, 131 ... recess, 132 ... protrusion, 140 ... ground terminal, 141 ... tubular part, 142 ... connection part, 143 ... contact part 144 ... Carrier, 145 ... Third opening, 146 ... Fourth opening, 147 ... Locking hole, 150 ... Fixing member, 151 ... Fifth opening, 152 ... Arm, 153 ... Convex, 154 ... Stopper, 160 ... Encapsulant

Claims (11)

A central terminal having a connection portion connected to the central conductor of the coaxial cable and a contact portion in contact with the mating terminal.
A contact accommodating space accommodating the contact portion of the central terminal and a sealing space communicating with the contact accommodating space to accommodate the connection portion and having a diameter larger than that of the contact accommodating space are formed, and the contact is formed. A first opening communicating between the accommodating space and the sealing space and a second opening for injecting a sealing material into the sealing space are formed on the side wall and are composed of a dielectric material. Cylindrical body and
By being inserted into the first opening, it is arranged between the contact accommodating space and the sealing space, separates the contact accommodating space and the sealing space, and stops the flow of both spaces. And with
Electrical connector. The sealing space accommodates a connecting portion between the connecting portion and the central conductor of the coaxial cable, and the sealing material for sealing the connecting portion is arranged.
The electrical connector according to claim 1. The sealing space further covers the central conductor, further accommodates a covering portion composed of a dielectric, and the outer conductor of the coaxial cable, and seals the covering portion, the outer conductor, and the connection portion. A sealing material to stop is placed,
The electrical connector according to claim 2. A part of the side surface of the contact accommodation space is connected to a part of the side surface of the sealing space, and the central terminal is connected to a part of the side surface of the contact accommodation space and a part of the side surface of the sealing space. The first opening is formed in contact with each other and is formed on a surface facing a part of the side surface of the contact accommodating space and the sealing space.
The electrical connector according to any one of claims 1 to 3. The isolation plate has a recess into which a part of the central terminal is inserted.
The electrical connector according to any one of claims 1 to 4. The isolation plate comes into contact with a portion of the central terminal between the connection portion and the contact portion.
The electrical connector according to any one of claims 1 to 5. The central conductor of the coaxial cable is connected to the connection portion,
The sealing material was arranged in the sealing space,
The electrical connector according to any one of claims 1 to 6. The sealing material is composed of an acrylic adhesive.
The electrical connector according to claim 7. A ground terminal having a tubular shape for accommodating the tubular body and connected to the outer conductor of the coaxial cable,
A fixing member composed of a dielectric, which has the isolation plate and is arranged so as to cover the outside of the ground terminal.
The ground terminal has a third opening that communicates with the first opening.
The isolation plate is arranged in the first opening of the tubular body via the third opening.
The ground terminal has a fourth opening communicating with the second opening.
The fixing member has a second opening and a fifth opening communicating with the fourth opening.
The electrical connector according to any one of claims 1 to 8. The electrical connector according to any one of claims 1 to 9.
A housing in which a connector accommodating space for accommodating the electric connector is formed, and
A waterproof material arranged in the gap between the electric connector and the connector accommodating space,
Waterproof connector with. A connection step of connecting the center conductor of the coaxial cable to the connection part of the center terminal having a connection part connected to the center conductor of the coaxial cable and a contact part contacting the other side terminal.
The contact portion of the central terminal to which the central conductor is connected is housed in a contact accommodating space provided in a tubular body made of a dielectric material, and the connecting portion is communicated with the contact accommodating space. The accommodation process of accommodating in a sealing space with a larger diameter than the contact accommodating space,
An isolation plate is inserted from a first opening communicating between the contact accommodating space and the sealing space of the tubular body in which the central terminal is arranged, and the contact accommodating space and the sealing space are separated from each other. Separation plate insertion process to isolate and stop the flow of both spaces,
The sealing material is filled in the sealing space through a second opening communicating with the sealing space of the tubular body into which the isolation plate is inserted, and the connection portion is connected to the central conductor of the coaxial cable. It comprises a sealing step of sealing a portion.
How to attach a coaxial cable to an electrical connector.

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