JP4677176B2 - Electrical connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrical connector having a plurality of power plug outlets.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when supplying electricity to a plurality of electrical devices from a single power supply wire, an electrical connector provided with a plurality of insertion portions into which a power plug of the electrical device is inserted is generally used. This electrical connector has a blade receiving terminal corresponding to the plug blade of the power plug inside the container body, and the upper case body and the lower case body are combined, but the upper case body and the lower case body are respectively It was molded from a thermoplastic resin such as a vinyl chloride resin (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 05-205820 (page 3, FIG. 1)
[0004]
[Problems to be solved by the invention]
However, since the above-mentioned electrical connector has formed the upper and lower case bodies constituting the container body by resin injection molding, a mold for forming the upper and lower case bodies corresponding to the number of power plug insertion ports is prepared. The manufacturing cost could not be reduced.
[0005]
The present invention solves the above-mentioned problems, reduces the manufacturing cost by forming the upper and lower case bodies constituting the container body by extrusion molding, and can increase the degree of freedom corresponding to the number of insertion ports. It is an object of the present invention to provide an electrical connector that can be assembled with a good appearance of the upper and lower case bodies.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, an electrical connector according to the present invention is formed by forming an upper case body and a lower case body in a substantially U-shaped cross section by extrusion molding, and combining the upper case body and the lower case body vertically. In this way, a rectangular tube-shaped vessel body is formed, the opening surface on one end side is closed with an end cap, the opening surface on the other end side is closed with a connection case connecting a power supply line, and a power source is provided inside the vessel body. An electrical connector including a blade receiving terminal corresponding to a plug blade of a plug, a support base that supports the blade reception terminal, and a cover member that covers the blade reception terminal supported by the support base, The lower end of the side plate of the upper case body is bent inward with a heel to form a locking portion, and the support base is fixed with screws from the bottom surface of the lower case body. Hooks that lock the locking part of the support bulge upward from both sides of the support base Forming Te, characterized by fixing the upper case body to the lower case body engages the hook on the case body from the inside when coalesce the lower casing and the upper case body.
[0007]
In addition, an engagement groove and an engagement protrusion are formed on the joint surface between the side plate of the upper case body and the side plate of the lower case body, respectively, and the inner case is bent inwardly into the heel of the side plate of the upper case body. It is preferable that the tip end portion is formed so as to protrude inside the side plate of the lower case body .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view illustrating an example of the electrical connector A of the present invention, FIG. 2 is an exploded perspective view of the electrical connector A, and FIG. 3 is an enlarged exploded perspective view in which the electrical connector A is partially cut. The figure is shown. The electrical connector A is configured such that a rectangular tube-shaped device body 3 can be formed by combining the upper case body 1 and the lower case body 2 in the vertical direction. A blade receiving terminal corresponding to the plug blade is internally provided, and an insertion portion 4 into which a power plug of an electric device is inserted is provided on the upper surface, one end of the vessel 3 is closed with an end cap 5, and the other end is opened. Is closed with a connection part case 8 provided with a connection part 7 for connecting the electrical connector A and the power supply wire 6.
[0010]
The upper case body 1 is formed by extrusion forming aluminum or an aluminum alloy into a substantially U-shaped cross-section with an opening at the bottom, and an opening 15 that exposes the insertion portion 4 after molding is formed by pressing.
[0011]
The side plate 16 of the upper case body has a lower end bent inwardly in the hand of the heel, and the bent portion 16a constitutes a locking portion that is locked to a hook 39 of the support base 25 described later, and a lower end surface (side plate) of the side plate 16 The engagement groove 17 is formed in the surface abutting on the surface 19, and the front end portion 16 b enters the inside of the side plate 19 of the lower case 2 .
[0012]
Similarly to the upper case body 1, the lower case body 2 is formed by extruding aluminum or an aluminum alloy so as to have a substantially U-shaped cross section in which side plates 19 are erected at both ends of the bottom plate 18, and an upper end surface (side plate) of the side plate 19. 16 is formed with an engagement protrusion 20 that engages with the engagement groove 17 of the upper case body 1, and the bottom plate 18 is positioned when a support base 25 described later is set. A positioning hole 22 to be inserted, and a support base 25, an end cap 5, and an insertion hole 23 into which a fixing screw for fixing the connection portion case 8 to the bottom plate 18 is inserted are formed by pressing.
[0013]
When the upper case body 1 and the lower case body 2 are combined vertically, the engaging protrusion 20 enters the engaging groove 17 so that the outer surface of the side plate 16 and the outer surface of the side plate 19 are flush with each other. Is formed.
[0014]
Reference numeral 25 denotes an insulating resin support for supporting the blade receiving terminal plates 26, 27, and 28, and a voltage side accommodating portion 30 for accommodating the blade receiving terminals 29 of the voltage side blade receiving terminal plate 26. A grounding side receiving portion 33 for receiving the blade receiving terminal 32 of the grounding side blade receiving terminal plate 27 and a grounding receiving portion 35 for receiving the blade receiving terminal 34 of the blade receiving terminal plate 28 for grounding are formed. A screw hole 36 for screwing the fixing tapping screw 48 from the back surface is formed, and a positioning hole formed in the lower case body 2 so that positioning can be performed when the support base 25 is set in the lower case body 2. An engagement protrusion 38 (see FIG. 6A) that engages with the protrusion 22 protrudes from the bottom surface.
[0015]
Furthermore, hooks 39 for locking the locking portions 16a of the upper case body 1 are formed on both side surfaces. The hook 39 is formed to bulge upward from both side surfaces of the support base 25. When the support base 25 is fixed to the lower case body 2 and the upper case body 1 and the lower case body 2 are combined, the hook 39 is The upper case body 1 is engaged with the locking portion 16a so that the upper case body 1 can be fixed to the lower case body 2.
[0016]
The blade receiving terminal plates 26, 27, and 28 are formed by integrally forming blade receiving terminals 29, 32, and 34 at predetermined intervals on a strip-like connecting plate having conductivity such as copper. Set so that the blade receiving terminal 29 is accommodated in the voltage side accommodating portion 30 of the support base 25 set in the body 2 and set so that the blade receiving terminal 32 is accommodated in the ground side accommodating portion 33. By setting so that the blade receiving terminal 34 is accommodated in the accommodating portion 35, the blade receiving terminals 29, 32, 34 are respectively inserted into the insertion holes 41, 42, 43 formed in the boss portions 46 of the cover member described later. It comes to correspond.
[0017]
Reference numeral 40 denotes an insulating resin cover member covering the blade receiving terminals 29, 32, and 34, and boss portions 46 bulging in a square shape are formed at both ends. The boss 46 is set so that the upper surface slightly protrudes from the opening 15 of the upper case body 1, and is connected to the voltage-side blade receiving terminal 29, the ground-side blade receiving terminal 32, and the grounding blade-receiving terminal 34. Arc-shaped insertion holes 41, 42, 43 are formed so that the plug blades of the power plug can be rotated in the locking direction (clockwise) after being inserted.
[0018]
The end cap 5 closes the opening surface on one end side of the container body 3 and can be fixed from the back surface of the lower case body 2 with a tapping screw 48. As shown in FIG. 4A, locking projections 53 are formed on both side surfaces of the end cap 5. The locking projection 53 is formed at a position where the locking portion 16 a of the upper case body 1 can be locked when the end cap 5 is inserted from the opening surface of the container 3, and the end cap 5 is inserted with the tapping screw 48 after the insertion. By fixing, one end side of the upper case body 1 can be fixed to the lower case body 2. An attachment hole 54 is formed outside the end cap 5 to fix or hang the electrical connector A to the floor surface, wall surface, rack or the like with screws.
[0019]
The connection portion case 8 includes a connection portion main body 60 and a cover member 61. One end of the connection portion main body 60 is connected to the blade receiving terminal plates 26, 27, and 28 by soldering, and the other end is connected to the connection portion. 7 are connected to the terminal plates 7a, 7b and 7c, which are soldered to the terminal plates 7a, 7b and 7c, and the cord clip 63 which holds the power supply wire 6 from above the covering. The crimp terminals 64a, 64b and 64c of the power supply wire 6 are The electrical connector A and the power supply wire 6 are electrically connected by screwing to the terminal plates 7a, 7b and 7c, respectively.
[0020]
An attachment hole 69 for fixing the electrical connector A to a floor surface, a wall surface, a rack or the like with a screw or hanging is formed on the outside of the connection portion main body 60.
[0021]
The connecting portion main body 60 is fitted with a positioning hole 71 formed in the lower case body 2 by fitting an engagement protrusion (not shown) formed on the bottom surface to determine the mounting position on the lower case body 2. ing. The positioned connection portion main body 60 may be fixed to the lower case body 2 by screwing the tapping screw 48 into the screw hole 77 from the back surface of the lower case body 2.
[0022]
As shown in FIG. 4B, locking projections 72 that lock the upper case body 1 are formed on both side surfaces of the connection portion main body 60. The locking projection 72 is formed at a position where it engages with the locking portion 16 a of the upper case body 1, and when the upper case body 1 and the lower case body 2 are combined, the locking projection 72 is formed on the upper case body 1. It engages with the locking portion 16 a and can fix the other end of the upper case body 1 to the lower case body 2.
[0023]
The cover member 61 is formed by screwing the crimp terminals 64a, 64b, 64c of the power supply wire 6 to the terminal plates 7a, 7b, 7c, respectively, and then inserting the rear end portion 61a into the inner side of the upper case body 1 and inserting the screws 74 into the cover member. 61 is inserted through the insertion hole 75 of the connection part 60 and passed through the insertion hole 76 of the connection part main body 60, and is fixed from the bottom surface with the nut 77, thereby forming the connection part case 8. The opening surface on the side can be closed.
[0024]
Next, the process of assembling the electrical connector A with the X-X line, YY line, and ZZ line cross-sections of FIG. 5 is shown in FIGS. 6 (a) to 6 (d) and FIGS. 7 (a) and 7 (b). This will be explained based on.
[0025]
First, the support base 25 and the connection portion main body 60 are set on the lower case body 2. At this time, the engaging protrusion 38 formed on the bottom surface of the support base 25 is fitted into the positioning hole 22 of the lower case body 2 so that the support base 25 is positioned in the lower case body 2 and fixed with the tapping screw 48 ( 6 (a) and 6 (b)), an engagement protrusion (not shown) formed on the bottom surface of the connection portion main body 60 is fitted into the positioning hole 71 to position the connection portion main body 60 in the lower case body 2, and a tapping screw. It fixes with 48 (refer Fig.7 (a)).
[0026]
After fixing the support base 25 and the connecting portion main body 60 to the lower case body 2, the blade receiving terminal plates 26, 27, and 28 (omitted in FIG. 6) are set, and the cover member 40 (omitted in FIG. 6) is covered. Then, one end of each of the three connection wires 62 is soldered to the blade receiving terminal plates 26, 27, and 28, and the other end of the connection wire 62 is soldered to each of the terminal plates 7a, 7b, and 7c. Are combined with the lower case body 2.
[0027]
At this time, the engagement groove 17 formed on the side plate 16 of the upper case body 1 engages with the engagement protrusion 20 formed on the upper end surface of the side plate 19 of the lower case body 2, and the front end portion 16 b of the side plate 16. Is in contact with the inner side surface of the side plate 19, the side plate 16 and the side plate 19 are combined without being released by the external pressure applied from the lateral direction.
[0028]
The hook 39 of the support base 25 locks the locking portion 16a of the upper case body 1 (see FIG. 6 (d)), and the locking protrusion 72 of the connecting portion main body 60 is the locking portion of the upper case body 1. The upper case body 1 can be fixed to the lower case body 2 by locking 16a.
[0029]
Further, after the upper case body 1 and the lower case body 2 are combined, the end cap 5 is fitted into the one end side opening. As shown in FIG. 6 (b), the locking projections 53 formed on both side surfaces of the end cap 5 engage with the locking portion 16 a of the upper case body 1, so that the tapping screw 48 is formed from the bottom surface of the lower case body 2. By fixing with, the one end side of the upper case body 1 and the lower case body 2 can be fixed reliably.
[0030]
Finally, the rear end portion 61a of the cover member 61 is inserted into the upper case body 1, a screw 74 is inserted from the insertion hole 75 of the cover member 61, the insertion hole 76 of the connection portion main body 60 is passed, and the nut 77 from the bottom surface. The electrical connector A can be formed by fixing with.
[0031]
When the power line 6 is connected to the electrical connector A, the screw 74 is removed, the cover member 61 is removed, and the crimp terminals 64a, 64b, 64c of the power cable 6 are screwed to the terminal plates 7a, 7b, 7c, respectively. After that, if the cover member 61 is again fixed to the connecting portion main body 60 with the screws 74, an electrical connector to which the power supply wires 6 are connected as shown in FIG. 1 can be obtained.
[0032]
According to the electrical connector A, the body 3 is fixed to the lower case body and the hook of the support base fixed to the lower case body without directly screwing the upper case body 1 and the lower case body 2 together. The support cap 25, the end cap 5, and the connection portion main body 60 are fixed to the lower case body 2. The tapping screw 48 can be seen only on the back surface of the lower case body 2, and there is no screw for connecting the upper case body 1 and the lower case body 2 on the upper surface and both side surfaces of the container body 3. A good electrical connector can be assembled. Moreover, the minimum required components such as a blade receiving terminal, a support base that supports the blade receiving terminal, and a cover member that covers the blade receiving terminal are arranged inside the container. The upper case body is fixed to the lower case body simply by assembling sequentially, so that the efficiency of the assembly work can be improved.
[0033]
In the present embodiment, the electrical connector A is formed by closing the opening surface on one end side of the vessel body 3 with the end cap 5 and closing the opening surface on the other end side with the connection portion case 8. When continuously connecting a plurality of electrical connectors, as shown in FIG. 8, the opening surface on one end side is closed with a connection part case 8 instead of the end cap 5, and the right connection part case in FIG. An attached power supply wire is connected, and a power supply wire for connecting to another electrical connector may be connected to the left connection case 8.
[0034]
Further, in the present embodiment, the case where the upper case body 1 and the lower case body 2 constituting the container body 3 are made of extruded products of aluminum or aluminum alloy has been described, but the upper case body 1 and the lower case body 2 are used. Is not limited to metal and may be an extruded product made of resin as long as it has a certain rigidity.
[0035]
And although the above-mentioned electrical connector A demonstrated the case where there were six insertion ports, since this electrical connector is formed by extrusion molding the upper case body and the lower case body, the number of insertion ports Since the upper case body 1 and the lower case body 2 only need to be extrusion-molded according to the requirements, there is no need to prepare a mold corresponding to the number of insertion holes as in the case of injection molding, and electrical connection with high production efficiency is possible. Can be realized.
[0036]
【The invention's effect】
According to the first aspect of the present invention, the screws for fixing the respective components only connect the upper case body and the lower case body to the upper surface and the peripheral surface of the container body only by seeing the head portion on the back surface of the lower case body. Since there is no screw for the purpose, it is possible to assemble a good-looking electrical connector. In addition, since the number of components can be minimized, the production cost can be reduced and the efficiency of the assembly work can be improved.
[ 0037 ]
According to the invention of claim 2, when the upper case body and the lower case body are combined, the engagement groove and the engagement protrusion formed on the contact surface where the side plate of the upper case body and the side plate of the lower case body abut. Since the edge is engaged and the tip of the side plate of the upper case body is in contact with the inner side surface of the side plate of the lower case, the upper case body and the lower case body are displaced by the external pressure applied from the side. There is no such thing.
[ 0038 ]
According to the invention of claim 3, by forming the upper case body and the lower case body by extrusion molding, it is possible to flexibly cope with the number of the insertion ports of the power plug.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of an electrical connector according to the present invention. FIG. 2 is an exploded perspective view of the electrical connector. FIG. 3 is an enlarged exploded perspective view in which the electrical connector is partially cut. (A) and (b) are perspective views for explaining the locking projections of the end cap and the lower case. [FIG. 5] A plan view of the above electrical connector. [FIG. 6] (a) to (d) are assembling the electrical connector. 7 is a cross-sectional view illustrating the process. FIGS. 7A and 7B are cross-sectional views illustrating a state in which the upper case body is fixed to the lower case body with the connection case and the end cap. FIG. Plan view explaining connector [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Upper case body 2 Lower case body 3 Container body 5 End cap 8 Connection part case 17 Engagement groove 20 Engagement edge 25 Support stand 29 Blade receiving terminal 32 Blade receiving terminal 34 Blade receiving terminal 39 Hook 40 Cover member 53 Locking Projection 72 Locking projection A Electrical connector

Claims (2)

The upper case body and the lower case body are each formed into a substantially U-shaped cross section by extrusion molding , and the upper case body and the lower case body are joined together vertically to form a rectangular tube-shaped container body, The opening surface is closed with an end cap, and the opening surface on the other end side is closed with a connection case for connecting a power line, and a blade receiving terminal corresponding to the plug blade of the power plug and the blade receiving terminal inside the vessel body An electrical connector including a support base that supports the blade support terminal and a cover member that covers the blade receiving terminal supported by the support base,
The lower end of the side plate of the upper case body is bent inward with a heel to form a locking portion, and the support base is fixed with screws from the bottom surface of the lower case body. A hook for locking the body locking portion is formed to bulge upward from both sides of the support base, and when the lower case body and the upper case body are combined, the hook locks the upper case body from the inside. An electrical connector, wherein the upper case body is fixed to the lower case body.   The joint surface of the side plate of the upper case body and the side plate of the lower case body is formed with an engaging groove and an engaging protrusion, respectively, and a tip end portion bent inwardly into the hand of the side plate of the upper case body The electrical connector according to claim 1, wherein the connector protrudes so as to enter the inside of the side plate of the lower case body.

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