JP3022442U - Car plug - Google Patents

Abstract

(57) [Summary] (Correction) [PROBLEMS] To close a housing of a car plug in a shell shape so as to be assembled into a strong body. A housing 1 of the housings 1a and 1b
In a, the shaft-cylindrical fitting cylinder portions 7 are fitted to the left and right side portions on the front end side of the split surface, the left and right side portions on the rear end side, and the left and right intermediate portions in the front and rear, respectively. The hole is installed so that the axial direction of the hole is perpendicular to the split surface, and the split surface of the other housing 1b is fitted to a portion corresponding to the fitting tubular portion 7 to be mounted on the one housing 1a. The axial rod-shaped projection body 8 that fits into the tubular portion 7 is mounted such that its axial direction is perpendicular to the dividing surface, and the projection body 8 is provided.
At least the base end side of the fitting tubular portion 7 is formed to have a diameter slightly larger than the inner diameter of the fitting hole of the fitting tubular portion 7, and the fitting tubular portion 7 and the rod-shaped projection 8 are press-fitted to each other by crimping. , Housing 1
The a and the housing 1b are integrally coupled to each other and assembled into the tubular body 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a car plug used for taking out a power source by using a jack part of a cigarette lighter provided in a cabin of an automobile and inserting a plug instead of the cigarette lighter.

[0002]

[Prior art]

 As shown in FIGS. 1 to 4, the car plug A of the above-described form generally has a body 1 of which a substantially semi-cylindrical bottom housing 1a and a lid side are formed by dividing surfaces along the axial direction. The housing 1b is divided into two parts, which are separately molded from a synthetic resin material, and they are closed into a shell shape to form a tubular shape. Then, at that time, a kick spring-shaped elastic terminal plate 2, a shaft-rod-shaped contact terminal 3, and a coil spring 4 for urging the spring-shaped contact terminal 3 are temporarily assembled in one housing 1a thereof. The cord 5 having the core wire connected to the elastic terminal plate 2 and the contact terminal 3 is led out to the outside from the cord outlet 10 provided in the shape of a shaft hole which is halved on the tail end side of the housing 1a. Then, from this state, the other housing 1b is closed like a lid, and they are integrally connected by screws 6, 6, 6, so that the housing 1b is divided into two as shown in FIG. The molded substantially semi-cylindrical housings 1a and 1b are assembled into a car plug A which is a shell-shaped closed body 1 to form a tubular body 1.

In addition, in the car plug A of this embodiment, the body 1 is divided into two, and the housings 1a and 1b, which are each formed in a substantially semi-cylindrical shape, are closed like a shell and are integrally connected by screws 6. In order to perform the work properly and quickly, the guide pins and the guide cylinders for the positioning of the closing are formed separately in the respective housings 1a and 1b. The fitting of the guide pin and the guide tube portion may facilitate the positioning and closing work when the two housings 1a and 1b are closed.

[0004]

[Problems to be solved by the device]

 In the car plug A of the above-described embodiment, when integrally connecting the housing 1a and the housing 1b that are closed in a shell shape with the screws 6, ..., The operation of inserting the screws 6, ... It is necessary to screw in the screw, and when the nut is screwed to the tip of the screw 6 inserted into the screw hole as a through hole, screw the nut. Since the operation is required, it takes a considerable amount of time to perform the connecting operation using the screws 6 ..., and the time required for the connecting operation increases the cost required for the entire assembly.

Further, the above-mentioned screws 6 ... Which connect the housing 1a and the housing 1b so as to be tightly bound are necessary parts for assembling the car plug A.

Therefore, temporarily, the housing 1a on the bottom side and the housing 1b on the lid side, which are separately molded, can be connected by simply closing them without using the screws 6 ... In this case, it is not necessary to insert the screws 6 ... into the screw holes or screw the screws 6 ... into the screw hole, and the time required for the assembling work can be shortened. By not using it, the number of parts can be reduced by the amount of these screws 6.

From this, according to the present invention, in the car plug A of the above-mentioned embodiment, the body 1 of the car plug A is divided into two parts along the axially dividing surface to be formed into separate substantially semi-cylindrical shapes on the bottom side. A new means whereby the housing 1a of 1) and the housing 1b of the lid side are simply closed in a shell shape, and they can be integrally combined with each other and assembled into a strong body 1 without using screws 6 ... The purpose is to provide.

[0008]

[Means for Solving the Problems]

 In the present invention, as means for achieving the above object, the cylindrical body 1 is divided into a substantially semi-cylindrical bottom side housing 1a and a lid side housing 1b by dividing surfaces along the axial direction. And the housings 1a and 1b, and the elastic terminals 2, contact terminals 3 and fuses 9 and the ends of the cords 5 to be connected to them are set in the housings 1a and 1b. In the car plug A that is assembled by closing in a shell shape, one of the separate housings 1a and 1b has left and right side portions on the front end side and left and right side portions on the rear end side of the split surface. At the left and right intermediate portions in the front-rear middle, shaft-cylindrical fitting cylinder parts 7 ... Are installed so that the axial direction of the fitting holes 70 ... Is perpendicular to the split surface. housing On the divided surface 1b, there is provided a rod-shaped projection 8 ... Fitting to the fitting tubular portion 7 ... at a portion corresponding to the fitting tubular portion 7 mounted on the one housing 1a. The protrusion 8 is installed so that its axial direction is perpendicular to the split surface, and the outer diameter r2 of at least the base end side 8b of the projection 8 is greater than the inner diameter R of the fitting hole 70 of the fitting tubular portion 7. The housing 1a and the housing 1b are integrally joined by press-fitting the fitting tubular portion 7 and the rod-shaped projection 8 ... The present invention proposes a car plug, which is characterized in that the car plug is assembled to the body 1.

[0009]

[Action]

 In the device of the present invention configured as described above, the housing 1a on one half side of the body 1 and the housing 1b on the other end side, which are divided into two parts and molded separately, are provided on the left and right sides on the front end side of the one housing 1b. Shaft-rod-shaped projections 8 ... arranged and arranged at both end portions and right and left end portions on the rear end side and left and right center portions at the front and rear intermediate portions are provided at corresponding portions of the other housing 1a. , The outer diameters of the projections 8 are set to be slightly smaller than the outer diameters of the projections 8 so as to face the fitting tubular portions 7 that are installed, and from this state, the two housings 1a and 1b are added. By pressing and closing them together, the axial rod-shaped projections 8 ... Are press-fitted into the fitting cylindrical portions 7 ... And are pressed together to be integrally joined.

In this state, the shaft rod-shaped projections 8 ... Are pressed into the fitting cylinders 7 ...・ 1b cannot be separated from each other, and during assembly, if there is an error in the parts to be assembled inside, it must be destroyed or discarded.

[0011]

【Example】

 Next, embodiments will be described in detail with reference to the drawings. The same reference numerals are used for the constituent members having the same effects as those of the conventional means.

FIG. 5 is a side view of a car plug A according to the present invention, FIG. 6 is a plan view of the same as above, and FIG. 7 is a plan view of a state before the housing on the lid side is fitted in the same. 1, 1 is a tubular body, 1a is a housing on the bottom side of the body, 1b is a housing on the lid side, 2 is an elastic terminal plate in the form of a kick spring, 3 is a contact terminal in the form of a shaft rod, 4 Is a coil spring for urging it forward, 9 is a fuse interposed between the contact terminal 3 and the coil spring 4, 40 is a fuse contact surrounding the coil spring 4, 5 is a cord, 50 ... The core wire of the cord 5, 51.51 is a coating cord for covering the core wire 50 ..., and 7 ... is a fitting tubular portion formed in the housing 1a on the bottom side.

Further, in FIG. 12, 8 ... Shows a rod-shaped projection formed in the housing 1b on the lid side.

The body 1 is divided into two parts by a dividing surface along the axial direction, and they are separately molded into a substantially semi-cylindrical bottom side housing 1a and a lid side housing 1b from a synthetic resin material, Although they are formed into a cylindrical shape by closing them together in a bivalve shape and integrally joining them, the bottom side housing 1a and the lid side housing 1b are joined together in a closed state. However, we do not use any screws, screws or nuts.

That is, the housing 1a on the bottom side and the housing 1b on the lid side, which are made of a synthetic resin material in a substantially semi-cylindrical shape, are provided in one of the housings 1a as shown in FIGS. 8 and 9. The fitting cylindrical portions 7 having the shaft-hole-shaped fitting holes 70 are fitted to the split surface at the left and right of the front end side of the split surface, the left and right of the rear end side, and the left and right central portions in the middle between the front and rear. The shafts of the fitting holes 70 are installed in a vertical state, and the split surface of the other housing 1b has a shaft-like shape that fits into the fitting hole 70 of the fitting tubular portion 7. Are arranged at positions corresponding to the above-mentioned fitting cylinder portions 7 arranged on the split surface of the one housing 1a so that the axial center line is perpendicular to the split surface. When the bottom housing 1a and the lid housing 1b are closed in a shell shape, The fitting cylindrical portions 7 provided on one housing 1a and the projections 8 provided on the other housing 1b are press-fitted, and by these press-fitting fittings, the housing 1a and the housing 1b are closed. It is designed so that the connection of is done in a crimped state.

The shaft-cylindrical fitting cylinder portion 7 provided on the one housing 1a and the shaft-rod-shaped projection 8 provided on the other housing 1b close the two housings 1a and 1b in the conventional means. When they are aligned, they are distributed and formed in the respective housings 1a and 1b so that they serve as guides for alignment and closing work. They are shaped like guide cylinders and guide pins. In the means of the present invention, the fitting cylindrical portion 7 and the rod-shaped projection 8 are press-fitted to each other to press the one housing 1a and the other housing 1b that are closed together. Since the connection in the tightened state is performed, the axial rod-shaped projections 8 ... As shown in FIG. 9 and FIG. Than the inner diameter R of the fitting hole 70 of No. 7 It is formed to have a small diameter so that positioning and guide for the closing operation can be performed at the time of closing, and the protruding end portion 8a serving as the main body portion of the protruding body 8 is used as a base. The base portion 8b on the end side is formed such that the outer diameter r2 thereof is slightly larger than the inner diameter R of the fitting tubular portion 7, whereby the protruding end portions 8a ... 7 is inserted into the temporary binding state and set on a jig having a simple structure that is separately formed, and pressure is applied using the jig to fit the main parts of the projections 8 ... By press-fitting and fitting into the cylindrical portion 7, the crimped state is obtained.

Further, the fitting cylinder portion 7 ... And the rod-shaped projection 8 ... serve as a caulking member for integrally coupling the closed housing 1a and the housing 1b. Basically, the housings 1a and 1b to be closed should be provided at five positions respectively on the left and right side parts on the front end side, the left and right side parts on the rear end side, and the left and right middle parts in the front and rear. However, in some cases, it may be additionally provided in the inside of the cutout window holes 11 and 11 through which the contact terminal portions 20 and 20 of the kick spring-like elastic terminal plate 2 are inserted and withdrawn.

Further, another fitting tubular portion 7 is auxiliary disposed slightly behind the fitting tubular portion 7 which is provided in the center portion on the left and right in the middle of the front and rear of the one housing 1a. Between the fitting cylindrical portion 7 and the fitting cylindrical portion 7 which are arranged in parallel with each other, the bending portion 21 on the proximal end side of the kick spring-like elastic terminal plate 2 which is bent like a hairpin is inserted and locked. The groove y may be formed.

The rod-shaped projection 8 mounted on the other housing 1b so as to correspond to the fitting tubular portion 7 which is additionally mounted to form the locking groove y is located in front of it. The gap between the protrusion 8 and the protrusion 8 may be wider than the gap of the locking groove y described above.

Further, the cord outlet 10 for pulling out the cord 5 formed in the shape of a half-divided shaft hole at the tail end side end of the bottom side housing 1a and the lid side housing 1b is shown in FIG. As shown in FIGS. 11 and 14, the width in the left-right direction is narrow, and the width in the up-down direction is formed to be approximately twice the width in the left-right direction. As a result, as shown in FIG. When using a two-line parallel type flat cord in which the coated cords 51, 51 of the core wire 50 are arranged in two rows in 5, the direction in which the coated cords 51, 51 are parallel to the cord 5 is perpendicular to the split surface. In this state, the bottom side of the housing 1a is pushed into the tail end side of the cord in the half-divided state and is pushed into the outlet port 10, and the tip ends of the covered cords 51 of the two core wires 50 ... , Peel off from the end of each coated cord 51 By connecting the extended core wires 50 to the kick-terminal-shaped elastic terminal plate 2 that is temporarily assembled in the housing 1a on the bottom side and the fuse contact 40 that serves as the connection terminal pole of the contact terminal 3, respectively. The cord 1 is provided with temporary binding to the cord outlet 10 of the housing 1a on the bottom side.

The cord outlets 10 and 10 formed in the shape of half shaft holes on the tail end sides of the housing 1a on the bottom side and the housing 1b on the lid side are round cords in which the cords 5 to be used are rod-shaped. In the case of, the cord outlets 10 and 10 are formed so as to form a substantially perfect circle when closed.

As shown in FIG. 18, the kick spring-shaped elastic terminal plate 2 is formed in a clip shape in which the left and right contact terminal portions 20, 20 are connected by a hairpin-shaped bent portion 21. Then, the bent portion 21 on the base end side thereof is provided with the fitting cylindrical portion 7 disposed in the center portion on the left and right in the front, rear, and middle portions of the housing 1a on the bottom side and the fitting portion disposed auxiliary to the rear thereof. By being fitted into a locking groove y formed between the cylindrical portion 7 and the cylindrical portion 7, it can be assembled to the housing 1a on the bottom side in a temporary binding shape.

Further, as shown in FIG. 19, the fuse contact 40 is formed on a metal plate in a smaller clip shape, and the fuse contact 40 is formed on the left and right central portions in the front and rear intermediate portions of the bottom housing 1a. The case-shaped accommodating portion 13 that opens forward and upward is provided so that the connecting terminal pole 401 on the tail end side projects rearward. At this time, the coil spring 4 shaped like a coil as shown in FIG. 20 is loaded so as to be sandwiched in the fuse contact 40 as shown in FIG.

Further, on the head side of the housing 1a on the bottom side and the housing 1b on the lid side, female threads 12a that are screwed into male threads 3a provided on the inner end side of the shaft-shaped contact terminal 3 are provided on the inner peripheral surface. The shaft holes 12 provided are each formed in a half-divided state.

The shaft-rod-shaped contact terminal 3 is formed by press-fitting the bottom housing 1 a and the lid-side housing 1 b with the above-mentioned fitting cylinder portion 7 and the shaft-rod-shaped projection 8 ... By tightening and closing them together, the male screw 3a provided on the inner end side of the contact terminal 3 is screwed into the female screw 12a on the inner peripheral surface of the shaft hole 12 formed in the head, and By screwing the male screw 3a until it comes out of the female screw 12a, the body portion 3b of the contact terminal 3 is assembled to the body 1 in a state of freely moving back and forth within the shaft hole 12. At this time, before assembling the contact terminal 3, the fuse 9 is inserted into the body 1 through the shaft hole 12 so that the fuse 9 is assembled into the body 1.

Further, the bottom side housing 1a is provided with protrusions 14 and 14 projecting in the vertical direction from the dividing surface, and the lid side housing 1b is provided with these protrusions 14 and 14 at the periphery thereof. Fitting recesses 15 are formed to fit into.

[0027]

[Effect of device]

 As described above, in the car plug A according to the present invention, the body 1 molded in a cylindrical shape from the synthetic resin material is divided into the substantially semi-cylindrical bottom housing 1a and the lid side by the dividing surface along the axial direction. The housing 1b is divided into two parts and molded separately from each other with a synthetic resin material, and the housings 1a and 1b are closed in a shell shape and integrally joined to each other to assemble it into a cylindrical body 1. On one of the housings 1a, there are fitted cylindrical portions 7 ... Having a fitting hole 70 in the shape of a shaft hole in the left and right side portions on the front end side of the dividing surface and on the left and right side portions on the rear end side and in the front-rear middle. Left and right intermediate portions are arranged, and in the other housing 1b, shaft rod-shaped projections that are fitted to the fitting tubular portions 7 are respectively provided at portions corresponding to the fitting tubular portions 7 ... 8 is provided and the outer diameter of the base end portion 8b of the projection 8 is provided. 2 is formed to have a diameter slightly larger than the inner diameter R of the fitting tubular portion 7, and is closed by press-fitting the shaft rod-shaped projections 8 ... to the fitting tubular portion 7. Since the housing 1b and the housing 1b are joined together by crimping the peripheral portion and the central portion, they are assembled into a strong body 1 without using any screws or screws. Therefore, the cost can be reduced as much as the parts for the screws and screws.

Moreover, since the press-fitting fitting of the fitting tubular portions 7 ... And the shaft rod-shaped projections 8 ... Is performed by the operation of closing the housing 1a and the housing 1b, the body 1 is assembled. The time can be shortened significantly.

Further, the axial rod-shaped projections 8 ... Have a guide pin for positioning by setting the outer diameter r1 of the protruding end portion 8a thereof to be slightly smaller than the inner diameter R of the fitting tubular portion 7. This also serves to improve workability when the housing 1a and the housing 1b are closed and assembled into the body 1.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view of a conventional car plug.

FIG. 2 is a vertical sectional side view of the above.

FIG. 3 is a front view of the above.

FIG. 4 is a perspective view of the above.

FIG. 5 is a side view of a car plug according to the present invention.

FIG. 6 is a plan view of the same car plug.

FIG. 7 is a plan view of the same car plug during assembly.

FIG. 8 is a plan view of the housing on the bottom side of the body of the car plug.

FIG. 9 is a vertical cross-sectional side view of the upper bottom housing.

FIG. 10: AA in FIG. 9 of the same housing on the bottom side
It is a line sectional view.

FIG. 11 is a bottom view of the housing on the lid side of the body of the above car plug.

FIG. 12 is a vertical sectional side view of the same housing.

FIG. 13 is a sectional view of the same housing taken along line BB in FIG. 12.

FIG. 14 is a vertical cross-sectional side view of the same housing and the bottom housing in a closed state.

FIG. 15 is a cross-sectional view taken along line CC in FIG. 14 in the same state.

FIG. 16 is an explanatory diagram of a process of assembling an elastic terminal plate and the like to the housing on the bottom side of the body.

FIG. 17 is a perspective view of a lid-side housing.

FIG. 18 is a perspective view of an elastic terminal plate.

FIG. 19 is a perspective view of a fuse contact.

FIG. 20 is a perspective view of a coil spring.

[Explanation of symbols]

A ... Car plug, R ... Inner diameter, r1 / r2 ... Outer diameter, y ... Locking groove, 1 ... Body, 1a / 1b ... Housing, 10 ... Drawout port, 11 ... Notched window hole, 12 ... Shaft hole, 12a ... Female screw,
13 ... Housing part, 14 ... Ridge, 15 ... Fitting concave part, 2 ... Elastic terminal plate, 20 ... Contact terminal part, 21 ... Bending part, 3 ... Contact terminal, 3a ... Male screw, 3b ... Body part, 4 ... Coil Spring, 40 ... Fuse contact, 401 ... Connection terminal pole,
5 ... Cord, 50 ... Core wire, 51 ... Coated cord, 6 ... Screw, 7 ... Fitting cylinder part, 70 ... Fitting hole, 8 ... Projection body, 8a ...
Projection end, 8b ... Base end, 9 ... Fuse.

Claims (5)

[Scope of utility model registration request] 1. A tubular body 1 is divided into a substantially semi-cylindrical bottom-side housing 1a and a lid-side housing 1b by dividing surfaces along the axial direction, and molded separately from a synthetic resin material. Then, in the car plug A in which the housings 1a and 1b are set with the elastic terminal portion 2 and the contact terminal 3 and the fuse 9 and the terminal portion of the cord 5 connected to them, and the shells are closed and assembled, One of the separate housings 1a and 1b is provided on one of the left and right side portions on the front end side of the dividing surface, on the left and right side portions on the rear end side, and on the left and right intermediate portions in the front and rear, in the axial cylinder. -Like fitting cylindrical portions 7 ... Are installed so that the axial direction of the fitting holes 70 ... Is perpendicular to the split surface, and the split surface of the other housing 1b is attached to the one housing 1a. Fitting to be installed The shaft rod-shaped projections 8 ... Fitting to the fitting cylinders 7 are mounted in a position corresponding to the fitting cylinders 7 in a posture in which the axial direction of the shafts 8 is perpendicular to the split surface. Also, the outer diameter r2 of at least the base end side 8b of the projection 8
Is formed to have a diameter slightly larger than the inner diameter R of the fitting hole 70 of the fitting tubular portion 7, and the fitting tubular portion 7 and the rod-like projection 8 are press-fitted to each other by crimping. A car plug, characterized in that the housing 1a and the housing 1b are integrally coupled and assembled into a tubular body 1. 2. A fitting cylindrical portion 7 for mounting an outer diameter r1 of a tip side 8a of a rod-shaped projection 8 mounted on the split surface of the other housing 1b on the split surface of the one housing 1a. It is formed to have a diameter slightly smaller than the inner diameter of the fitting hole 70 of ...
The car plug according to claim 1, wherein a ... Also serves as guide pins for closing the housings 1a and 1b. 3. Fitting cylinders 7 ... Are additionally installed at positions inside the cutout window holes 11, 11 through which the contact terminal portions 20 of the elastic terminal plate 2 of one housing 1a are inserted and withdrawn, and the other housing Notched window hole 1 for inserting and removing the contact terminal portion 20 of 1b
2. The car plug according to claim 1, further comprising an axial rod-shaped projection body 8.8 which is press-fitted into the fitting cylinder portion 7 at an inner position of the reference numeral 1.11. . 4. The fitting tubular portion 7 is arranged in front and back in parallel with each other at a portion slightly spaced behind the fitting tubular portion 7 provided at the center portion on the left and right in the front and rear of one housing 1a. A locking groove y for mounting and locking the bending portion 21 on the proximal end side of the elastic terminal plate 2 is provided between the fitting cylinder portion 7 and the fitting cylinder portion 7 that are arranged in parallel in the front and rear. The car plug according to claim 1, which is formed. 5. A cord outlet 10 provided in the shape of a half shaft hole on each tail end side of the housing 1a and the housing 1b.
2. The car plug according to claim 1, wherein 10 is formed in a flat shape having a wide width in a direction perpendicular to the split surfaces of the housings 1a and 1b and a narrow width in a direction parallel to the split surfaces.