CN109428217B - electrical connector - Google Patents

Abstract

The invention provides an electric connector having an inner conductor with a simple structure and low manufacturing cost without reducing the strength of the inner conductor. The electrical connector has a first connector formed on one end side of the cylindrical housing and a second connector formed on the other end side. The first connector includes a cylindrical first outer conductor provided inside one end side of the housing, and a hollow first inner conductor provided inside the first outer conductor coaxially with the first outer conductor with a first insulating member interposed therebetween. The second connector includes a cylindrical second outer conductor provided inside the other end side of the housing and electrically connected to the first outer conductor, and a hollow second inner conductor provided coaxially with the second outer conductor through a second insulating member inside the second outer conductor. The first inner conductor and the second inner conductor are connected to each other by a conductive connecting piece so as to be positioned coaxially, and the connecting piece is fixed in the housing by a fixing member obtained by hardening resin.

Description

electrical connector

technical field

The present invention relates to an electrical connector.

Background technique

Conventionally, there is known a conversion electrical connector (conversion adapter) (hereinafter, also simply referred to as an electrical connector) that converts a coaxial connector used for connection of a coaxial cable or the like to a different type of coaxial connection device.

Specifically, in this type of electrical connector, two coaxial connectors are connected to each other in opposite directions, and one coaxial connector is connected to the connector of the connection object, and the other coaxial connector is connected to other coaxial connectors. A connector that connects objects. Each of the connected coaxial connectors has an outer conductor and an inner conductor, and the outer conductor and the inner conductor are insulated by an insulating member. In addition, the outer conductors and the inner conductors of the two coaxial connectors provided to be connected are electrically connected to each other. Furthermore, when the counterpart connector is connected to the coaxial connector, the outer conductors and the inner conductors of the coaxial connector and the counterpart connector are electrically connected to each other.

As such an electrical connector, there is an electrical connector in which the inner conductor of one coaxial connector and the inner conductor of the other coaxial connector are integrally formed of the same material (for example, refer to Patent Document 1).

Patent Document 1 discloses an electrical connector for connector conversion in which an inner conductor of one coaxial connector has a cylindrical shape and an inner conductor of the other coaxial connector has a cylindrical shape. These inner conductors are integral bodies formed of the same material, and are provided coaxially inside the cylindrical outer conductor in a state of being insulated from the outer conductor.

prior art literature

Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 2004-342571

SUMMARY OF THE INVENTION

Technical problem to be solved by the present invention

However, in the conventional electrical connector as described in Patent Document 1, there is a problem that the manufacturing cost of the inner conductor is high.

Specifically, in the conventional inner conductor, one end side of one cylindrical member is configured as the inner conductor of one coaxial connector, and the other end side is configured as the inner conductor of the other coaxial connector. Furthermore, in order to accommodate the inner conductor of the counterpart connector, the end portion of the cylindrical member has a structure in which a socket or the like is formed in the axial direction. The inner conductor of this structure is relatively strong, but it is manufactured by cutting or die casting, so the manufacturing cost becomes high.

The present invention has been made to solve the above-mentioned technical problems, and an object thereof is to provide an electrical connector having an inner conductor of a simple structure that is inexpensive to manufacture, without reducing the strength of the inner conductor.

Solutions for Technical Problems

In order to achieve the above object, the electrical connector according to the present invention is a coaxial connector in which a first connector is formed on one end side of a cylindrical housing, and a second connector is formed on the other end side of the housing. A connector, wherein the first connector includes: a cylindrical first outer conductor provided inside the one end side of the housing; and a hollow first inner conductor with a first insulation interposed therebetween The member is provided on the inner side of the first outer conductor coaxially with the first outer conductor; the second connector includes a cylindrical second outer conductor provided on the other end of the housing inside of the side and electrically connected to the first outer conductor; and a hollow second inner conductor disposed on the inner side of the second outer conductor coaxially with the second outer conductor via a second insulating member ; The first inner conductor and the second inner conductor are connected to a coaxial position by a conductive connecting piece, and the connecting piece is fixed in the casing by a fixing member obtained by curing a resin.

As described above, in the electrical connector of the present invention, the hollow first inner conductor and the hollow second inner conductor are connected to the coaxial position by the conductive connecting piece, and there is no solid cylindrical shape as in the past. part, for a simple structure. Therefore, it can be manufactured by bending (pressing) of a metal plate, etc., and the manufacturing cost can be reduced compared with the conventional techniques using cutting or die casting.

Moreover, in the electrical connector of this invention, the connection piece is fixed in the housing by the fixing member obtained by hardening resin. Thereby, the strength of the portion of the connecting piece having a relatively weak strength among the inner conductors can be increased.

Therefore, the present invention can solve the technical problem of providing an electrical connector having an inner conductor of a simple structure that is inexpensive to manufacture without reducing the strength of the inner conductor.

Moreover, in the electrical connector of this invention, the said 1st inner conductor, the said 2nd inner conductor, and the said connection piece may be an integrally molded product which consists of one sheet metal plate material as a whole.

With this configuration, the electrical connector of the present invention can be produced by bending (pressing) of a single metal plate, instead of being produced by cutting or die casting as in the conventional art, thereby reducing the production cost compared to the conventional art.

In addition, the electrical connector of the present invention may include: a flange provided on the outer periphery of the housing; and a sealing member accommodated in a groove formed on one surface of the flange so as to surround the housing ; The fixing member divides the space inside the cylinder of the casing into two parts in an airtight or liquidtight manner.

With this structure, the electrical connector of the present invention can prevent water in a gaseous or liquid state from infiltrating from one connector side to the other connector side in the housing, and can prevent water in a gaseous or liquid state from penetrating the flange and mounting the protrusion immersed in the gap between the panels of the edge.

Further, in the electrical connector of the present invention, preferably, the maximum outer diameter of the first outer conductor and the maximum outer diameter of the first insulating member are equal to or smaller than the inner diameter of the other end side of the housing. Minimum inner diameter.

With this structure, the electrical connector of the present invention can assemble all the constituent elements from the one opening side (the other end side) of the housing. Therefore, in the assembling process, there is no need to perform work such as inverting the case, so that the manufacturing becomes easy.

Invention effect

According to the present invention, it is possible to provide an electrical connector having an inner conductor of a simple structure that is inexpensive to manufacture without reducing the strength of the inner conductor.

Description of drawings

FIG. 1( a ) is a perspective view of the electrical connector according to the embodiment of the present invention, and FIG. 1( b ) is a perspective view of the electrical connector of FIG. 1( a ) viewed upside down.

FIG. 2 is a cross-sectional view of FIG. 1( a ).

FIG. 3 is an exploded perspective view of the electrical connector shown in FIG. 1 .

FIG. 4( a ) is a perspective view of the case shown in FIG. 3 , and FIG. 4( b ) is a cross-sectional view thereof.

FIG. 5( a ) is a perspective view of the first outer conductor shown in FIG. 3 , and FIG. 5( b ) is a cross-sectional view thereof.

FIG. 6( a ) is a perspective view of the first insulating member shown in FIG. 3 , and FIG. 6( b ) is a cross-sectional view thereof.

FIG. 7( a ) is a perspective view of the second outer conductor shown in FIG. 3 , and FIG. 7( b ) is a cross-sectional view thereof.

FIG. 8( a ) is a perspective view of the second insulating member shown in FIG. 3 , and FIG. 8( b ) is a cross-sectional view thereof.

FIG. 9( a ) is a perspective view of the inner conductor shown in FIG. 3 , FIG. 9( b ) is a plan view taken along the arrow A of FIG. 9( a ), and FIG. 9( c ) is a view of FIG. 9( a ) B is a bottom view, FIG.9(d) is a C-direction perspective view of FIG.9(a), FIG.9(e) is an enlarged perspective view of the S part of FIG.9(d).

FIG. 10( a ) is a side view of the inner conductor shown in FIG. 9 , and FIG. 10( b ) is a cross-sectional view taken along the line X-X of FIG. 10( a ).

FIG. 11( a ) is a perspective view of the fixing member shown in FIG. 3 , and FIG. 11( b ) is a cross-sectional view thereof.

12 is an explanatory perspective view showing a usage example of the electrical connector according to the embodiment of the present invention.

Description of reference numerals

1: Electrical connector

2: Shell

3: Internal conductor

3a: connecting piece

3b: Plate Tabs

4: Fixed parts

6: Flange

7: O-ring (ring seal part)

8: Locking part

10: The first connector

11: The first outer conductor

12: The first insulating part

13: First inner conductor

20: Second connector

21: Second outer conductor

22: Second insulating part

23: Second inner conductor

30: Back shell

31: Substrate

32: Object Connector

Detailed ways

Hereinafter, an electrical connector according to an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1 , in an electrical connector 1 according to an embodiment of the present invention, a first connector 10 (SMB connector) is formed on one end side of a housing 2 formed of a cylindrical conductor, and the housing 2 is provided with a first connector 10 (SMB connector). A second connector 20 (FAKRA connector) is formed on the other end side. In addition, the electrical connector 1 includes a mounting flange 6 on the outer periphery of the housing 2 .

In the present embodiment, the first connector 10 is an SMB connector, and the second connector 20 is a FAKRA connector, but the type of the connector is not limited to this, and any type of connector may be used. The first connector 10 and the second connector 20 may be different kinds or the same kind of connectors.

In addition, in the present embodiment, the first connector 10 is a female connector, and the second connector 20 is a male connector, but the combination of the male type and the female type is not limited to this. Alternatively, the first connector 10 may be a male connector, the second connector 20 may be a female connector, or both connectors may be male connectors or female connectors.

As shown in FIG. 12 , the electrical connector 1 is mounted on the rear case 30 of the vehicle-mounted camera by, for example, screws 33 . The first connector 10 of the electrical connector 1 shown in FIG. 12 is fitted with a counterpart connector 32 provided on the substrate 31 in the rear case 30 . The second connector 20 is fitted with a counterpart connector attached to the end of the coaxial cable. This coaxial cable is connected to other equipment such as an electronic control unit (ECU). In this way, the electrical connector 1 electrically connects the wiring on the board 31 on the vehicle-mounted camera side and the coaxial cable connected to other equipment by the connector fitting.

As shown in FIG. 2 , the first connector 10 according to the present embodiment includes a cylindrical first outer conductor 11 , a hollow first inner conductor 13 , and a space between the first outer conductor 11 and the first inner conductor 13 . The first insulating member 12 that separates and insulates the two.

Specifically, the first outer conductor 11 is provided inside the one end side (the opening 2h side) of the case 2 in a state of being in contact with the case 2 to be electrically connected (conducted). The first inner conductor 13 is provided inside the first outer conductor 11 coaxially with the first outer conductor 11 .

In addition, the second connector 20 includes a cylindrical second outer conductor 21 , a hollow second inner conductor 23 , and a second insulator interposed between the second outer conductor 21 and the second inner conductor 23 and insulating them from both. Part 22.

Specifically, the second outer conductor 21 is provided inside the other end side (the opening 2i side) of the case 2 in a state of being in contact with the case 2 to be electrically connected (conducted). That is, the second outer conductor 21 is electrically connected to the first outer conductor 11 via the case 2 . In addition, the second outer conductor 21 is provided coaxially with the first outer conductor 11 . The second inner conductor 23 is provided inside the second outer conductor 21 coaxially with the second outer conductor 21 .

Hereinafter, each constituent element will be described.

(case)

As shown in FIG. 4 , the case 2 is a cylindrical member made of a conductive material such as metal, and has an opening 2h at one end of the cylindrical portion and an opening 2i at the other end. The case 2 has a first cylindrical portion 2a, a second cylindrical portion 2b, a third cylindrical portion 2c, and a fourth cylindrical portion 2d in this order from the side of the opening 2h. Here, when the inner diameters of the first to fourth cylindrical portions 2a, 2b, 2c, and 2d are respectively D1, D2, D3, and D4, the relationship of D1>D2 and D2<D3<D4 is satisfied. That is, the stepped portion 2f is formed between the second cylindrical portion 2b and the third cylindrical portion 2c, and the stepped portion 2g is formed between the third cylindrical portion 2c and the fourth cylindrical portion 2d. Moreover, the annular convex part 2e which protrudes in the cylinder inner side is formed between the 1st cylinder part 2a and the 2nd cylinder part 2b.

A flange 6 is provided on the outer circumference of the cylinder of the casing 2 . The flange 6 is provided with two threaded holes 6a with countersunk holes 6b. In addition, an annular groove 6c is formed on one surface (surface on the side of the opening 2h) of the flange 6 so as to surround the casing 2 and close to the outer periphery of the first cylindrical portion 2a. An O-ring 7 which is an example of an annular seal member can be accommodated in the groove 6c.

In addition, the housing 2 has a locking portion 8 on the outer surface of the cylinder. The lock portion 8 is engaged with a lock receiving portion provided on the counterpart connector side, and fixes the fitting between the counterpart connector and the second connector 20 .

(first outer conductor)

As shown in FIG. 5 , the first outer conductor 11 has a cylindrical body 11a. On the outer peripheral surface of the upper end portion of the cylindrical body 11a, four protruding portions 11c protruding to the outside of the cylinder are formed at equal intervals in the circumferential direction. The protruding portion 11 c is in contact with the annular convex portion 2 e of the case 2 , so that the first outer conductor 11 can be arranged and fixed at an appropriate position in the case 2 .

In addition, the cylindrical body 11a of the first outer conductor 11 is formed with four notch grooves 11e extending in the axial direction except for the upper end portion at equal intervals in the circumferential direction. Thereby, the part pinched|interposed by the two adjacent cut grooves 11e can be elastically displaced in the direction perpendicular|vertical to an axial direction.

Moreover, in the lower end part of the cylindrical body 11a of the 1st outer conductor 11, one protrusion part 11f which protrudes in the cylinder inner side is provided in the part pinched|interposed by two adjacent notch grooves 11e. Thereby, the cylindrical body 11a can contact the outer conductor of the counterpart connector of the 1st connector 10 more reliably.

(first insulating member)

As shown in FIG. 6 , the first insulating member 12 has a cylindrical portion 12a having a large outer diameter, a cylindrical portion 12b having a medium outer diameter, and a cylindrical portion 12c having a small outer diameter in this order from the top of the drawing. That is, when the outer diameters of the cylindrical portions 12a, 12b, and 12c are L1, L2, and L3, respectively, the relationship of L1>L2>L3 is satisfied. In addition, the first insulating member 12 has a through hole 12d in the axial direction formed in the center thereof, and accommodates the first inner conductor 13 therein.

(second outer conductor)

As shown in FIG. 7 , the second outer conductor 21 integrally includes a cylindrical portion 21a and a thick annular convex portion 21b protruding outside the cylinder at the lower end of the cylindrical portion 21a. In addition, a through hole 21 c extending in the axial direction is formed in the center of the second outer conductor 21 . A linear convex portion 21d is formed on the outer peripheral surface of the annular convex portion 21b. Thereby, when the second outer conductor 21 is assembled into the case 2 , the annular convex portion 21 b can be brought into contact with the case 2 more reliably.

(Second insulating member)

As shown in FIG. 8, the 2nd insulating member 22 integrally has the cylindrical part 22a, and the annular convex part 22b extended to the cylinder outer side at the lower end of this cylindrical part 22a. Further, in the center of the second insulating member 22 , a hole 22c with a large inner diameter and a hole 22d with a small inner diameter extending in the axial direction are successively formed in this order from the top in the figure, and penetrate the second insulating member 22 . The second inner conductor 23 is accommodated in the hole portion 22c and the hole portion 22d.

(inner conductor)

As shown in FIGS. 9 and 10 , the inner conductor 3 includes the first inner conductor 13 on the side of the first connector 10 and the second inner conductor 23 on the side of the second connector 20 . These 1st inner conductor 13 and the 2nd inner conductor 23 are connected by the electroconductive connection piece 3a so that it may be located in a coaxial position. Specifically, the first inner conductor 13 , the second inner conductor 23 , and the connecting piece 3 a are integrally molded products formed by bending a single metal plate material as a whole.

As shown in FIGS. 9 and 10 , the first inner conductor 13 has a female contact 13a formed at the lower end of the cylindrical portion 13c. The female contact 13a has two cut grooves 13b formed in the axial direction, and the distal end side (the opening portion 13e side) of the female contact 13a is formed in a state inclined inward. Thereby, the male contact of the counterpart connector can be elastically held in the female contact 13a.

As shown in FIGS. 9 and 10 , the second inner conductor 23 has a small-diameter cylindrical portion 23b that functions as a male contact, and a large-diameter cylindrical portion 23d for impedance adjustment. A pointed portion 23a is formed at the tip of the small-diameter cylindrical portion 23b. The small-diameter cylindrical portion 23b and the large-diameter cylindrical portion 23d are connected to each other via the inclined stepped portion 23c. The small-diameter cylindrical portion 23b and the pointed portion 23a are fitted as male contacts to the female contacts of the counterpart connector.

As shown in FIGS. 9( a ) and 10 ( a ), the connecting piece 3 a has a plate-like or strip-like shape, and connects the upper end portion of the first inner conductor 13 and the lower end portion of the second inner conductor 23 . Specifically, the connecting piece 3a connects a part of the entire circumference of the upper end of the cylindrical wall of the first inner conductor 13 (cylindrical portion 13c ) to the entire circumference of the lower end of the cylindrical wall of the second inner conductor 23 (large-diameter cylindrical portion 23d ). part of the week. That is, the connection piece 3a is provided offset from the axial center of the 1st and 2nd inner conductors 13 and 23. As shown in FIG.

As shown in FIG. 10( a ), the connecting piece 3 a is inclined with respect to the axis. In this way, even if the diameter of the first inner conductor 13 and the diameter of the second inner conductor 23 are different, both can be arranged coaxially by inclining the connecting piece 3a provided off the axis.

As shown in FIG.9(e), the upper part of the 1st inner conductor 13 is formed with the two plate-shaped convex pieces 3b extended in the direction perpendicular|vertical to an axial direction (connection point 3e side). When the electrical connector 1 is assembled, the plate-like protrusions 3b are brought into contact with the upper surface 12e of the first insulating member 12 and fixed by the fixing member 4, so that the inner conductor 3 can be reliably fixed to the inner conductor 3 in the housing 2. suitable location.

Moreover, as shown in FIG.9(e), in the upper part of the 1st inner conductor 13, the cover 3c cut out from the circular hole 3d closes the upper end opening part of the cylindrical part 13c of the 1st inner conductor 13. Thereby, when the electrical connector 1 is assembled, the resin forming the fixing member 4 can be prevented from flowing into the cylindrical portion 13c.

In addition, as shown in FIG. 10( a ), a cutout portion 13d is formed on the side wall of the cylindrical portion 13c of the first inner conductor 13 , and the upper portion of the cutout portion 13d is formed in a state slightly protruding outward. Accordingly, at the time of assembly, the first inner conductor 13 inserted into the through hole 12d of the first insulating member 12 is less likely to come off from the through hole 12d.

(fixed parts)

As shown in FIG. 11 , the fixing member 4 is a cylindrical member obtained by curing an insulating resin in the case 2 , and surrounds the connection piece 3 a of the inner conductor 3 and fixes the connection piece 3 a in the case 2 . , and strengthen the connecting piece 3a. Moreover, the fixing member 4 has the recessed part 4d on the lower surface 4b side, and the plate-shaped convex piece 3b of the inner conductor 3 is accommodated and fixed in the recessed part 4d. In addition, the fixing member 4 has an annular recessed portion 4c on the upper surface 4a side, and the lower end portion of the second inner conductor 23 is accommodated and fixed in the annular recessed portion 4c. As the material constituting the fixing member 4 , resins (eg, epoxy resins) or various adhesives that exhibit moderate fluidity when filled into the housing 2 and are excellent in strength and sealing properties after curing can be used.

As shown in FIG. 2 , the fixing member 4 divides the space inside the cylinder of the casing 2 into two parts in an airtight or liquid-tight manner. Specifically, the first connector 10 and the second connector 20 are electrically connected in the housing 2 , but are separated (sealed) by the fixing member 4 in an airtight or liquid-tight manner.

In addition, the first outer conductor 11 and the first insulating member 12, which are constituent elements of the first connector 10, are configured such that their maximum outer diameters are equal to or smaller than the minimum inner diameters inside the housing 2 on the second connector 20 side, respectively. Specifically, the outer diameter W1 (see FIG. 5 ) of the protruding portion 11 c of the first outer conductor 11 and the outer diameter W2 (see FIG. 6 ) of the cylindrical portion 12 a of the first insulating member 12 are larger than The inner diameters of the third cylindrical portion 2c and the fourth cylindrical portion 2d are small. In short, the first connector 10 is assembled by setting the outer diameter of the components of the first connector 10 and the inner diameter of the inside of the cylinder of the housing 2 so that the first connector 10 can be inserted from the opening 2i on the second connector 20 side of the housing 2 constituent elements.

Next, with reference to FIG. 3 etc., the assembling method of the electrical connector 1 which concerns on embodiment of this invention is demonstrated. The assembly steps are as follows.

(1) First, the first outer conductor 11 is inserted through the opening 2i on the second connector 20 side of the housing 2, and the lower surface 11d of the protruding portion 11c of the first outer conductor 11 is abutted and fixed to the lower surface 11d of the housing 2. The upper surface of the annular convex portion 2e.

(2) Next, the first insulating member 12 is inserted through the opening 2i on the second connector 20 side of the housing 2, the cylindrical portions 12b and 12c of the first insulating member 12 are accommodated inside the first outer conductor 11, and The lower surface 12f of the cylindrical portion 12a is abutted on and fixed to the upper end surface 11b of the first outer conductor 11 .

(3) Next, the first inner conductor 13 of the inner conductor 3 is inserted into the through hole 12d of the first insulating member 12 from the opening 2i on the second connector 20 side of the housing 2, so that the inner conductor 3 has a plate shape. The lower end surface of the convex piece 3b is in contact with and fixed to the upper surface 12e of the first insulating member 12 .

(4) Next, a desired amount of fluid resin is poured onto the upper surface 12e of the first insulating member 12, and the connection pieces 3a, the plate-like protrusions 3b, etc. of the inner conductor 3 are immersed in the resin, and in this state to harden the resin. Since the upper end opening of the first inner conductor 13 is blocked by the cover 3c, the resin does not penetrate into the hollow interior of the first inner conductor 13 when the resin is injected.

(5) Next, the second insulating member 22 is inserted through the opening 2i on the second connector 20 side of the housing 2, and the lower surface 22e of the annular convex portion 22b of the second insulating member 22 is abutted and fixed to the housing 2, the upper surface of the step portion 2f, and the upper surface 4a of the fixing member 4 obtained by curing the resin. At this time, the second inner conductor 23 of the inner conductor 3 is inserted into the small inner diameter hole portion 22d of the second insulating member 22, and the small diameter cylindrical portion 23b (male contact) of the second inner conductor 23 is provided from A state in which the large inner diameter hole portion 22c of the second insulating member 22 protrudes.

(6) Finally, the second outer conductor 21 is inserted through the opening 2 i on the second connector 20 side of the housing 2 , and the lower surface 21 e of the annular protrusion 21 b of the second outer conductor 21 is brought into contact with the second insulating member 22 The upper surface 22f of the annular convex portion 22b of the second outer conductor 21 is fixed to the inner peripheral surface of the third cylindrical portion 2c of the case 2 by abutting the side surface of the annular convex portion 21b of the second outer conductor 21 . At this time, the cylindrical portion 22 a of the second insulating member 22 is fitted into the through hole 21 c of the second outer conductor 21 . Complete the assembly through the above steps.

Furthermore, when the electrical connector 1 is mounted on the housing or the like, the O-ring 7 is preliminarily mounted in the groove 6c of the flange 6 . In addition, in the above-described assembly step, the respective components are sequentially assembled into the casing 2 , but a plurality of components may be inserted and assembled into the casing 2 in an assembled state. For example, the first insulating member 12 may be inserted and assembled into the case 2 in a state where the first insulating member 12 is assembled into the first outer conductor 11 .

Next, the action and effect will be described.

As described above, in the electrical connector 1 according to the present embodiment, the hollow first inner conductor 13 and the hollow second inner conductor 23 are connected by the conductive connecting pieces 3 a so as to be coaxially positioned. That is, there is no solid cylindrical portion like the conventional one, and it is a simple structure. Therefore, it can be produced by bending (pressing) of a metal plate material, and the production cost can be reduced compared with the conventional techniques using cutting or die casting.

Moreover, in the electrical connector 1 which concerns on this embodiment, the connection piece 3a is fixed in the housing|casing 2 by the fixing member 4 obtained by hardening resin. Thereby, the strength of the portion of the inner conductor 3 of the connecting piece 3 a whose strength is relatively weak can be increased. Therefore, in the electrical connector 1 according to the present embodiment, the inner conductor 3 having a simple structure with low manufacturing cost is formed without reducing the strength of the inner conductor 3 .

Moreover, in the electrical connector 1 which concerns on this embodiment, the 1st inner conductor 13, the 2nd inner conductor 23, and the connection piece 3a are integrally molded products which are integrally molded from one sheet metal plate material. With this configuration, the electrical connector 1 of the present embodiment can be manufactured by bending (pressing) or the like of a single metal plate instead of being manufactured by cutting or die casting as in the past, and the manufacturing cost can be reduced as compared with the prior art. .

In addition, the electrical connector 1 according to the present embodiment includes: a flange 6 provided on the outer periphery of the housing 2; In the groove 6c; the fixing member 4 is a structure which divides the space inside the cylinder of the casing 2 into two parts airtightly or liquidtightly. With this configuration, the electrical connector 1 according to the present embodiment can prevent water in a gaseous or liquid state from entering the housing 2 from one connector side to the other connector side, and can prevent water in a gaseous or liquid state from entering the housing 2 from the side of the other connector. The gap between the flange 6 and the panel (the rear case 30 and the like) to which the flange 6 is mounted is infiltrated.

In addition, in the electrical connector 1 according to the present embodiment, the maximum outer diameter of the first outer conductor 11 and the maximum outer diameter of the first insulating member 12 are equal to or smaller than the minimum inner diameter of the inside of the other end side of the housing 2 . With this configuration, the electrical connector 1 of the present embodiment can assemble all the constituent elements from the one opening 2i side (the other end side) of the housing 2 . Therefore, in the assembling process, there is no need to perform work such as inverting the casing 2, and thus the manufacturing becomes easy.

(Other Embodiments)

In the above-described embodiment, the case 2 made of a conductor is used, but an insulating case made of resin or the like may be used. In this case, a conductive connecting member for electrically connecting the first outer conductor 11 and the second outer conductor 21 may be provided, or the first outer conductor 11 and the second outer conductor 21 may be formed as a single body.

As described above, the present invention has the effect of having an inner conductor of a simple structure that is inexpensive to manufacture without reducing the strength of the inner conductor, and is useful for the entire electrical connector.

Claims (2)

1. An electrical connector in which a first connector is formed on one end side of a cylindrical housing and a second connector is formed on the other end side of the housing,

the first connector includes: a cylindrical first outer conductor provided inside the one end side of the housing; and a hollow first inner conductor provided coaxially with the first outer conductor with a first insulating member interposed therebetween on an inner side of the first outer conductor;

the second connector includes: a cylindrical second outer conductor provided inside the other end side of the housing and electrically connected to the first outer conductor; and a hollow second inner conductor provided coaxially with the second outer conductor through a second insulating member inside the second outer conductor;

the first inner conductor and the second inner conductor are connected to each other by a conductive connecting piece at a coaxial position, the connecting piece is fixed in the housing by a fixing member obtained by hardening a resin,

the first inner conductor, the second inner conductor, and the connecting piece are integrally formed of a metal plate,

the electrical connector includes: a flange provided on an outer periphery of the housing; and a seal member housed in a groove formed in one surface of the flange so as to surround the housing;

the fixing member divides the space inside the cylinder of the housing into two parts hermetically or liquid-tightly,

the fixing part surrounds the connecting sheet and fixes the connecting sheet in the shell,

the fixing member has an annular recess, and the lower end portion of the second inner conductor is housed and fixed in the annular recess.

2. The electrical connector of claim 1,

the maximum outer diameter of the first outer conductor and the maximum outer diameter of the first insulating member are equal to or smaller than the minimum inner diameter of the inside of the other end side of the housing.

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