JPH0729781U - Socket plug - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a socket plug which prevents the deterioration of the sealing property caused by the sealing agent filled in the socket portion and the deterioration of the supporting strength of the connector terminal. A concavo-convex structure is provided on an inner surface of a fitting cylinder of a connector section surrounding a connector terminal electrically connected to the socket section, and a sealant is filled inside the concavity and convexity. Further, the inner bottom surface of the fitting cylinder is formed to be an inclined surface, or the portion of the connector terminal provided in the fitting cylinder along the bottom surface of the fitting cylinder is formed to have a narrow width.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a socket plug that supports a light bulb and that energizes the light bulb by using an integrated connector.

[0002]

[Prior art]

 This type of socket plug is composed of a socket portion as a light bulb socket for supporting a light bulb, and a plug portion for connecting to an external connector for electrical connection to the light bulb. For example, as shown in FIG. 8 and FIG. 9, a fitting wall 5 into which the base of the light bulb 50 is fitted is provided at one end of the housing 2, and a plurality of fitting walls, three here, are fitted inside the fitting wall. The socket 6 is supported by the contact 6 of FIG. A fitting cylinder 9 into which the connector is fitted is provided at the other end of the housing 2, and the connector terminals 10 formed integrally with the contacts 6 are arranged and supported in the fitting cylinder 9. Part 4 is made up. In general, the contact 6 is composed of one negative terminal and two different positive terminals, which are arranged in a "-" shape when viewed from the end face direction, as shown in FIG. A bayonet structure is formed by the flange 7 and the bayonet piece 8 that are integrally provided on the housing 2, and is used when the socket plug is attached to the lamp.

[0003]

[Problems to be solved by the device]

 In this type of socket plug, each connector terminal 10 of the connector portion 4 is penetrated through an opening 11a provided in a partition wall 11 between the socket portion 3 and the connector portion 4. Therefore, for the purpose of sealing between the opening 11a and the connector terminal 10 and at the same time fixing the connector terminal 11 in the housing 2, a sealing agent 13 made of a curable resin is provided on the bottom of the fitting cylinder 9. Filling is done. At this time, when the tip of the nozzle (not shown) for filling the sealant 13 is set at the position A in FIG. 9, the sealant 13 flows from point A toward each part in the fitting cylinder 9. However, insufficient wraparound occurs on the back surface side of each connector terminal 10, and defective filling of the sealing agent occurs at a plurality of locations shown in FIG. For this reason, the sealing property at this portion X is deteriorated, and the supporting strength of the connector terminal 10 is deteriorated.

Further, the filled sealing agent 13 expands and contracts due to the temperature change cycle that occurs in the socket plug, and the contact surface with the inner surface of the fitting cylinder 9 separates to form a gap, resulting in poor sealing performance. , And the supporting strength of the connector terminal may be reduced. SUMMARY OF THE INVENTION An object of the present invention is to provide a socket plug which prevents the deterioration of the sealing property caused by the sealing agent and the deterioration of the supporting strength of the connector terminal.

[0005]

[Means for Solving the Problems]

 In the socket plug of the present invention, unevenness is provided on the inner surface of the fitting cylinder of the connector section surrounding the connector terminal electrically connected to the socket section, and the fitting cylinder is filled with the sealant. Further, in the present invention, the inner bottom wall of the fitting cylinder is formed to be an inclined surface, or the portion of the connector terminal provided in the fitting cylinder along the inner bottom wall of the fitting cylinder is formed to be narrow.

[0006]

[Action]

 According to the present invention, by providing unevenness on the inner surface of the fitting cylinder, the contact area between the sealing agent and the inner surface of the fitting cylinder is increased, the adhesive strength of the sealing agent is improved, and the peeling of the sealing agent is suppressed. Further, by forming the inner bottom wall in an inclined surface or by forming the base portion of the connector terminal in a narrow width, it is possible to enhance the effect of filling the sealant into the fitting cylinder.

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 3 show a first embodiment of the present invention, FIG. 1 is a sectional view thereof, and FIG. 2 is an end view thereof. In these drawings, the housing 2 that constitutes the socket plug 1 has one end side formed into a cylindrical shape and the socket portion 3 formed therein, and the other end side formed into a substantially rectangular tube-shaped portion. It constitutes part 4. In the socket part 3, a fitting wall 5 defining a flat space into which the base part 51 of the wedge base type electric bulb 50 is fitted is formed, and three contacts are provided at different positions inside the fitting wall 5. 6 is supported. Each of these contacts 6 is composed of an elastic conductive piece, and elastically contacts a plurality of electrodes (not shown) provided on the base portion 51 of the light bulb 50, one for the negative electrode of the light bulb 50 and the other for the other. Are contacted with different positive electrodes. Further, a flange 7 and a bayonet piece 8 are integrally formed on the outer peripheral surface of the housing 2 in the socket portion 3, and a well-known bayonet structure used when attaching the socket plug to the lamp is constituted by these.

On the other hand, the connector portion 4 provided at the other end of the housing 2 has a square tube-shaped fitting tube 9 formed by the housing 2, and is provided in an area surrounded by the fitting tube 9. The three connector terminals 10 are arranged and supported. These connector terminals 10 are respectively integrated with the three contacts 6 and penetrate through the inner bottom wall of the connector portion 4, in other words, the opening 11a provided in the partition wall 11 separating the socket portion 3 and the connector portion 4. Then, the other end of each contact 6 is projected into the fitting cylinder 9. Therefore, it goes without saying that these connector terminals 10 are composed of one negative terminal and two different positive terminals, and these are viewed from the end face direction in the fitting cylinder 9 as shown in FIG. They are arranged in a "ni" shape.

Further, as shown in the perspective view of the main part of FIG. 3, the fitting cylinder 9 of the connector portion 4 has a large number of irregularities on the inner wall surface of which the cross section in the direction perpendicular to the cylinder axis is wavy. The inner wall surface is formed as the wavy surface 12. Then, the inner bottom portion of the fitting cylinder 9 is filled with a sealant 13 to fill the gap between the opening of the partition wall 11 and the connector terminal 10 to ensure the sealing property, and the sealant 13 is cured to cure the connector. The support of the terminal 10 is reinforced.

According to this configuration, the sealing agent 13 filled in the fitting cylinder 9 of the connector portion 4 contacts the inner wall surface of the fitting cylinder 9 at the peripheral portion thereof, Since the inner surface is formed as the corrugated surface 12, the contact area with the sealing agent 13 increases due to the unevenness, and the adhesive strength between the sealing agent 13 and the inner surface of the fitting cylinder 9 increases. Therefore, the sealing agent 13 is not peeled off from the inner surface of the fitting cylinder 9, a good sealing effect can be secured, and a reduction in the supporting strength of the connector terminal 10 can be prevented.

4 and 5 show a second embodiment of the present invention, FIG. 4 is a sectional view, and FIG. 5 is an end view thereof. The same parts as those in the first embodiment are designated by the same reference numerals. In this embodiment, the inner surface of the fitting cylinder 9 of the connector portion 4 is the same as the corrugated surface 12, but the wall surface of the inner bottom wall of the fitting cylinder 9, that is, the surface of the partition wall 11 is an inclined surface. It is configured as 14. That is, when the connector portion 4 is set upward and the sealing agent 13 is filled in the fitting cylinder 9, the wall surface at the point A where the nozzle (not shown) for filling the sealing agent 13 is located is the highest. The other wall is formed as an inclined surface that is lower than that. In this example, the point A is set at a substantially central position of the three connector terminals 10 and the surface of the partition wall 11 is formed to be a pyramid type having the point A as an apex.

With this structure, the sealing agent 13 discharged from the nozzle and filled in the fitting cylinder 9 moves from the highest position on the surface of the partition wall 11 to the lower position along the inclined surface 14. Since the fluid is easily flowed, it is possible to eliminate the insufficient wraparound of the sealing agent 13 at the back surface side portion of each connector terminal 10, and it is possible to uniformly fill the fitting cylinder 9 with the sealing agent 13. This makes it possible to secure good sealing properties and enhance the support strength of the connector terminal.

6 and 7 show a third embodiment of the present invention, FIG. 6 is an end view, and FIG. 7 is a perspective view of a main part thereof. In this embodiment, the inner surface of the fitting cylinder 9 of the connector portion 4 is formed straight and the inner bottom wall thereof is formed flat, but the base of the connector terminal 10 protruding into the fitting cylinder 9 is formed. That is, a portion along the inner bottom wall of the fitting cylinder 9 is cut out from both sides to form a cutout portion 10A that narrows the terminal width.

By forming the notch 10A in the connector terminal 10 and narrowing the base of the notch 10A in this manner, the sealing agent 13 filled from the point A is cut in the notch of the connector terminal 10 as shown by an arrow in the figure. Since it flows to the back side of the connector terminal 10 through 10A, it is possible to prevent the connector terminal 10 from blocking the flow of the sealing agent 13, and to enhance the filling efficiency of the sealing agent 13 into the fitting cylinder 9. Is possible. Even if the base portion of the connector terminal 10 is formed to have a narrow width, since this portion is filled with the sealant 13 made of a cured resin, there is almost no problem in strength of the connector terminal. It should be noted that although all of the above-described embodiments are applied to the socket plugs that support the wedge base type light bulb, it is needless to say that the same can be applied to the socket plugs that support the light bulb of the ordinary base structure.

[0015]

[Effect of device]

 As described above, according to the present invention, by providing unevenness on the inner surface of the fitting cylinder, the contact area between the sealing agent and the inner surface of the fitting cylinder is increased to improve the adhesive strength of the sealing agent and to remove the sealing agent. It is possible to improve the support strength of the connector terminal while preventing it and ensuring a good sealing property. Also, by forming the inner bottom wall as an inclined surface or by forming the connector terminal with a narrow width, defective filling of the sealing agent into the fitting cylinder can be eliminated, and sealing performance and connector terminal support strength can be further improved. Can be increased.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention.

FIG. 2 is an end view of FIG.

FIG. 3 is a perspective view of a main part of the first embodiment.

FIG. 4 is a sectional view of a second embodiment of the present invention.

FIG. 5 is an end view of FIG.

FIG. 6 is an end view of the third embodiment of the present invention.

FIG. 7 is a perspective view of a main part of the third embodiment.

FIG. 8 is a sectional view of a conventional socket plug.

FIG. 9 is an end view for explaining a conventional defect.

[Explanation of symbols]

 1 Socket Plug 2 Housing 3 Socket Part 4 Connector Part 5 Fitting Wall 6 Contact 7 Flange 8 Bayonet Piece 9 Fitting Tube 10 Connector Terminal 10A Notch 11 Partition Wall 12 Wavy Surface 13 Sealant 14 Inclined Surface A Nozzle Position

Claims (3)

[Scope of utility model registration request] 1. A socket plug comprising a socket part for supporting a light bulb and a connector part provided with a connector terminal electrically connected to the socket part, wherein an unevenness is formed on an inner surface of a fitting cylinder surrounding the connector terminal. A socket plug provided, wherein the fitting cylinder is filled with a sealant. 2. A socket plug comprising a socket part for supporting a light bulb and a connector part provided with a connector terminal electrically connected to the socket part, wherein an inner bottom wall of the fitting cylinder is formed on an inclined surface. A socket plug characterized by that. 3. A socket plug comprising a socket part for supporting a light bulb and a connector part provided with a connector terminal electrically connected to the socket part, wherein the connector terminal located in the fitting cylinder is fitted. A socket plug characterized in that a base portion along the inner bottom wall of the fitting cylinder is formed to have a narrow width.