JP3002266B2 - Harness plug - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harness plug attached to the end of a power supply line for connecting the power supply line by a connector system.

[0002]

2. Description of the Related Art A harness plug is connected to a harness connector, and connects a power supply line by a so-called connector system.

[0003]

However, in the conventional harness plug of this type, a locking mechanism is provided on both the left and right sides in order to maintain a reliable connection state. 189876).

The present invention has been made in view of the above points, and an object of the present invention is to provide a small harness plug.

[0005]

According to the present invention, in order to achieve the above object, there is provided a blade to which a plurality of core wires of an electric wire are connected, respectively, and these blades are housed in a synthetic resin housing and received. A recess is formed in the front surface of the housing, the recess being fitted into the connector of the connector housing the blade receiving portion on the side and projecting the plug blade, and an opening is formed in the upper surface corresponding to the recess in the housing. A lock piece having a claw that fits into a retaining groove provided in the attached connector and prevents it from being pulled out is attached so that the claw protrudes from the opening to the inside of the recess so as to be able to freely advance and retreat, and is reversely inserted into the recess. the ridges prevent forming, and
The upper surface of the lock piece is substantially flush with the upper surface of the housing.
The lock piece is attached to the housing in such a manner.

[0006]

[0007]

According to the present invention, there is provided a connector in which a plurality of core wires of an electric wire are respectively connected as described above, these plug blades are housed in a synthetic resin housing, and a blade receiving portion serving as a receiving side is housed. A recess is formed on the front surface of the housing, the recess being fitted to the connection portion of the connector and projecting the plug blade, and an opening is formed on the upper surface corresponding to the recess of the housing. A lock piece having a claw that is fitted to prevent disengagement is attached such that the claw protrudes from the opening into the recess so as to be able to advance and retreat , and a projection that prevents reverse insertion is formed in the recess , and The top surface of the lock piece is above the housing
Place the lock piece on the housing so that it is
By mounting Rukoto, conventionally provided with a lock mechanism which had been provided on both left and right sides of the housing only in the top surface of the housing, with a shape it can be a small, reverse insertion of the connector to be receiving-side by ridges provided in the recess Can be prevented , and
Lock piece almost protrudes from the top of the housing
No housing, miniaturized housing and improved appearance
The lock piece is accidentally operated and the lock is released.
It is is obtained by the so that it is possible to prevent from being.

[0008]

1 to 5 show an embodiment of the present invention. The harness plug of the present invention is applied to, for example, a floor wiring system. Therefore, first, this floor wiring system will be briefly described, then the joint box to which the harness plug of the present embodiment is connected will be described, and then the harness plug of the present embodiment will be described.

As shown in FIG. 3, the floor wiring system includes a joint bobbin disposed under the free access floor F.
Boxes A and A ' , an outlet C buried in the floor, and a wiring device H such as an outlet arranged on the floor are connected to one end.
A demarcation box D, which is embedded in the floor to draw the power cord G to harness plug B is mounted under the floor to the other is, the floor wiring by using the distearate ® Into box I to branch the trunk L ₀ is located under the floor Can be freely performed.

[0010] In this floor wiring system, the job of the trunk line L ₀
Using Into box I branched into a plurality of branch lines L _1,
Con branch line L ₁ further using a joint box A
It branches to a cent C and a wiring device H. Ma
And, outlet mains L ₀ using a joint box A '
C and wiring equipment H.

A joint to which the harness plug B is connected
As shown in FIG. 4, the box A ′ includes a connection unit 1 to which a main line L _{0 of} a power supply is connected and connection units 2 and 2 ′ to be connected to a wiring device H and an outlet C. Is branched into a plurality of wiring devices H and outlets C.

As shown in FIG. 5, the housing 3 of the joint box A ' comprises a body 10 made of a synthetic resin and a cover 20, and three sets of terminal blocks 30 ₁ therein.
30 ₃ can be achieved.

The body 10 is separated into left and right storage spaces by a central partition 11, and the left storage space on the side of the connecting portions 1 and 2 is further divided into three sections by two vertically running partition walls 12, and the other right. Both sides of the storage space are separated by a partition 1 except for a portion connected to the cutout 13 formed in the center of the central partition 11.
4 _1, 14 ₂ by are divided into 3 sections. A boss 15 is formed at the center of the center partition 11 and a boss is provided on the cover 20 (not shown), and the boss 15 is formed through a screw insertion hole formed in each boss. Install under the floor.

[0014] the terminal block 30 ₁ is provided with a substantially U-shaped which is formed in the terminal plate 31 ₁ which opens to the side, the blade receiving portion 3 at both ends
3, a blade receiving spring 32 ₁ connected between each blade receiving portion 33 by a connecting piece 36 ₁ whose central portion is bent at a right angle,
Lead plate 35 connecting terminal plate 31 ₁ and blade receiving spring 32 _1
1 and consists of two locking springs 34. to be included on both end portions of the terminal plate 31 _1.

[0015] the terminal block 30 _2, and the terminal plate ₃₁₂ of the terminal block 30 _first terminal plate 31 ₁ and the same shape, a linear connection between the double-edged receiving 33 is formed blade receiving portion 33 at both ends a blade receiving springs 32 ₂ linked with pieces 36 _2, terminal plate 31 ₂
And a lead plate 35 ₂ which connects the blade receiving spring 32 _2, consisting of two lock springs 34. to be included on both end portions of the terminal plate 31 _2.

[0016] Terminal block 30 _3, the terminal block 30 _first terminal plate 31 ₁ and the terminal plate ₃₁₃ of the same shape, the central portion between both end portions blade receiving portion 33 is formed in the blade receiving portion 33 is blade and receiving the spring 32 ₁ a blade receiving spring 32 ₃ which is connected by connecting pieces 36 ₃ which is bent at right angles in opposite directions, the terminal plate 31 ₃
And a lead plate 35 ₃ which connects the blade receiving spring 32 _3, consisting of two lock springs 34. to be included on both end portions of the terminal plate 31 _3.

Here, each of the terminal blocks 30 ₁ to 30 ₃
Of forming a pair of dowels 37 in two places each on the upper surface of the terminal plate 31 _{1-31 3} together (see terminal plate ₃₁₂ of the terminal block 30 _2), dowel in place of the blade receiving springs _{321 to} 323 38 forming a (where blade receiving springs 32 ₁ a dowel 38 is formed at a position not visible in the illustrated state), the lead plate 35 _1-3
5 to ₃ holes of the mounting pieces formed at both ends of the dowels 37 and 38 by caulking, respectively corresponding terminal plate 31 of the block to be _{1-31 3}
And connecting the blade receiving springs _{321 to} 323 to each other.

The terminal plates 31 _{1 to} 31 ₃ and the blade receiving spring 32
_{1-32 3} connecting between the previously performed before incorporation into the body 10. The body 10 of each pin block 30 ₁ to 30 ₂
Incorporation is performed in the following order. First, videos terminal plate 30 ₃ the terminal block 30 ₃ in a form fit in most of the central partition wall 11 toward the left pane of the housing space in the body 10, then the terminal plate 31 ₂
The videos terminal block 30 ₂ in the form fit in the middle section, fit the terminal block 30 ₁ in a manner to keep the terminal plate 31 ₁ in the outermost compartment last.

As described above, first, the terminal block 30 ₃
When fit the outermost front edge receiving portion 33 of the blade receiving springs 32 ₃ fits the compartment of the central partition wall 11 toward the inside of the front section of the right housing space, blade receiving portion 33 of the rear side behind the partition fits compartment, the lead plate 35 ₃ notches central bulkhead 11 13
Passed through. When accommodating the terminal block 30 _2,
Blade receiving spring 32 ₂ of each of the blade receiving portion 33 is fit into the center of the front and rear sections of the left storage space and fit the terminal block 30 _1,
Blade receiving spring 32 ₁ of the blade receiving portion 33 is fit into the remaining compartments of each left receiving space. In this way, each terminal block 30 ₁ -
In a state of matches and 30 _3, the lead plate 35 _{1-35 3} is formed so as not to respectively contact. The terminal block 30
When fit a ₁ - 30 ₃ to the body 10 is kept accommodated in advance the lock spring 34 to both ends of the terminal plates 31 ₁ to 31 _3.

[0020] depositing a cover 20 in a state that matches the terminal block 301 _{to 303} on the body 10 in this manner.
When the cover 20 is attached, the terminal plates 31 _{1 to} 31 ₃
The two release buttons 39 for releasing the wire connection portion of the quick-connecting structure composed of the lock spring 34 are housed. Here, the release button 39 is intended to release the connection state of the electric wire by locking spring 34 each disposed at opposite ends of the terminals blocks 301 _{to 303} at the same time, corresponding to the storage location of the release button 39 An operation hole 25 for operating the release button 39 is formed at each corner of the both ends of the cover 20, and when a tool such as a screwdriver is inserted through the operation hole 25 and the release button 39 is operated, the electric wire can be removed. .

Although the details of the cover 20 are not shown, the internal structure is formed substantially the same as the body 10 side, and the insertion hole 26 through which the fitting 40 is inserted is formed in the center of both ends of the upper surface and the center of both sides. The body 1 is formed in a place 27 so that the eyelet 40 is connected to the insertion hole 26 and the insertion hole 26.
It is attached to the body 10 by caulking through an insertion hole 16 formed in the outer wall of the “0”.

From the end surface on the left storage space side of the housing 3 formed by attaching the body 10 and the cover 20, connecting portions 1 and 2 for directly connecting, such as a power line serving as a main line, are protruded. From the end face on the right storage space side, connecting portions 2 ′ for connecting a harness plug B having a plug blade 55 are protruded respectively.

The connecting portions 1 and 2 are formed such that the center of the end surface is recessed, and three rows of core wire insertion holes 41 are formed perpendicular to the recessed surface. Here, each core wire insertion hole 41 communicates with each section of the left storage space, and has a thin tip so that the core wire can be reliably inserted between the terminal plate 31 and the lock spring 34.

The connecting portion 2 'is formed in a substantially rectangular parallelepiped shape, and has three blade insertion holes 42 formed at its end face, each of which is a vertically long hole into which the blade of the harness plug B is inserted. The blade receiving portion 33 of the blade receiving spring 32 is configured to be housed therein. Incidentally, during the blade receiving portion 33 of each are insulated by a partition wall that is continuous with the partition wall 14 _1, 14 _2. A groove 43 running laterally is formed on the peripheral surface of the connecting portion 2 ', and the groove 43 is used for preventing the harness plug from coming off. In addition, 1
A groove 44 running vertically is formed at the location, and the groove 44 prevents reverse insertion of the harness plug B.

[0025] If the joint box A 'of the present embodiment connects the main line L ₀ is the core wire of the wire harness plug B is not connected to such trunk L ₀ (provided that the core wire such as VVF line It is necessary to be a single wire. However, if a crimp terminal or the like is used, a wire having a stranded core wire such as a VCT wire can also be connected) into the insertion hole 41 of the wire insertion portion 1. And connect. In this way, each terminal block 301 _{to 303} through the respective wire connecting portion 1 and the connecting part 2 'is connected, each of the connecting portions 2, 2 as required' and branch line L ₁ in If connected, trunk line L ₀
Can be branched. It is also possible to further branching with joints box A as shown such a branch line L ₁ which is branched in the Figure 3.

The harness plug B of this embodiment connected to the joint boxes A and A ' will be described below. The harness plug B of this embodiment is, for example, attached to the end of a power cord 45 of a wiring device H as shown in FIG. 2, and the housing 5 is composed of a synthetic resin body 51 and a cover 52. 5 di on the front
A concave portion 53 is formed in the connection portion 2 'of the joint boxes A and A' and fitted with the protruding blade 55 therein. A wire outlet for drawing out the power cord 45 connected to the blade 55 is formed at the rear portion. It is formed. The harness plug B can be attached to the end of the power cord of the outlet C shown in FIG.

As shown in FIG. 1, the inside of the body 51 is separated into front and rear storage spaces by a partition wall 60, and the front recess 5 is formed.
4, the recess 53 is formed. The partition wall 60 has a fixing portion 56 for press-fitting and fixing the three blades 55. When the blades 55 are attached to the fixing portions 56, the tips of the blades 55 are lined up in the recesses 54. Will be done. The power cord 45 is, for example, a three-core power line (for example, VC
T), and the power cord 45 is connected to the rear end of the blade 55 by caulking a core wire. And the above-mentioned plug blade 5
5 is provided with a core wire arrangement portion 57 which is divided into three sections by two partition walls 58.
The respective core wires 5 are insulated and drawn out through a concave portion 61 serving as a rear wire outlet. In addition, a protrusion 6 for preventing the power cord 45 from coming off is provided on the bottom surface of the recess 61.
2 is formed sideways.

The cover 52 has an internal structure of the body 5.
It has almost the same structure as 1, and an insertion hole 63 through which a stopper 64 is formed in four places on both sides is formed in the recess 65,
An eyelet 64 is formed on the wall of the body 51 so as to communicate with the insertion hole 63 and the insertion hole 63, and is caulked through the insertion hole 66 and attached to the body 51.

[0029] On the inner surface of the recess to form a recess 53 with a recess 54 of the body 51 of the cover 52, the join
A ridge 67 is formed to fit into the groove 44 of the box A, A ' , thereby preventing reverse insertion. this
An attachment portion 69 for attaching a lock piece 68 is formed at the center of the portion serving as the recess 53 .

The mounting portion 69 has a structure in which the upper surface of the housing 5 is recessed and an opening is formed in front of the recess, and a portion behind the opening is a fixing portion 69a of the lock piece 68.
It has become.

The lock piece 68 has a claw 68a formed at the front end edge which curves downward, and an L-shaped fixing piece 68b for fixing to the mounting portion 69 at the rear end lower surface. The locking piece 68 is attached by fixing the fixing piece 68b to the fixing part 69a of the mounting part 69, and heat-fixes the fixing piece 68b to the fixing part 69a. In this state, the claw 68a projects from the front opening of the mounting portion 69 into the recess 53 so as to be able to advance and retreat .
The upper surface of the lock piece 68 is the upper surface of the housing 5.
It is attached to the attachment part 69 so that it is substantially the same surface as.

When the harness plug B of this embodiment is aligned with the direction in which the ridge 67 fits into the groove 44, and the connecting portion 2 'of the joint boxes A and A' is fitted into the recess 53 of the harness plug B. blade 55 is inserted into the plug blade insertion hole 42, blade receiving springs 32 ₁ a respective terminal blocks 301 _{to 303} of
To 32 it is connected to ₃ of the blade receiving portion 33. At this time, the claw 68a of the lock piece 68 protruding from the opening is fitted into the groove 43 and is prevented from coming off. If a portion of the lock piece 68 opposite to the claw 68a is pressed, the lock piece 68 bends with the fixed piece 68b as a fulcrum, and the claw 68a moves in a direction to withdraw from the recess 53. Can be removed from the lock. In addition, since the upper surface of the lock piece 68 is substantially flush with the upper surface of the housing 5, the lock piece 68 hardly protrudes from the upper surface of the housing 5, thereby reducing the size of the housing 5 and improving the appearance. Is locked and the lock 68 is locked by mistake.
Can be prevented from being canceled .

[0033]

As described above, the present invention is provided with a blade to which a plurality of core wires of an electric wire are connected, respectively, and stores these blades in a synthetic resin housing and stores a blade receiving portion on the receiving side. A recess is formed in the front surface of the housing, the recess being fitted in the connection portion of the connector, and the plug blade is protruded, and an opening is formed in the upper surface corresponding to the recess in the housing, and a stopper provided in the fitted connector is provided. A lock piece having a claw that fits into the groove and prevents slipping out is attached so that the claw protrudes from the opening into the recess so as to be able to advance and retreat, and a projection is formed in the recess to prevent reverse insertion , And the upper surface of the lock piece is a housing.
The lock piece so that it is almost flush with the upper surface of the housing.
The lock mechanism, which was conventionally provided on both the left and right sides of the housing, can be provided only on the upper surface of the housing to reduce the size. Connector can be prevented from being reversed , and the lock piece can be almost
No protrusion, miniaturization of housing and appearance
As the prosperity improves and the lock piece is
Click there is an advantage that can be prevented from being released.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of the present invention.

FIG. 2 is a perspective view after assembling the same.

FIG. 3 is a system configuration diagram of a floor wiring system using the above.

FIG. 4 is a perspective view of a joint box connecting the same.

FIG. 5 is an exploded perspective view of the joint box .

[Explanation of symbols]

 5 Housing 45 Power cord 53 Concave portion 55 Plug blade 67 Ridge 68 Lock piece 68a Claw

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshimitsu Tsukawaki 1285 Gomono, Misato-mura, Aki-gun, Mie Prefecture Inside Hayama Electric Co., Ltd. (56) References Hei 2-7878 (JP, U) Actually open 1956-78182 (JP, U)

Claims (1)

(57) [Claims] 1. A plug blade to which a plurality of core wires of an electric wire are respectively connected, the plug blade is housed in a synthetic resin housing, and is fitted to a connection portion of a connector housing a blade receiving portion serving as a receiving side. A recess in which the plug blade is projected is formed on the front surface of the housing, an opening is formed in the upper surface of the housing corresponding to the recess, and the connector is fitted in a retaining groove provided in the fitted connector to prevent the connector from coming off. A lock piece having a claw is provided so that the claw protrudes from the opening into the recess so as to be able to advance and retreat , and a projection is formed in the recess to prevent reverse insertion , and
The upper surface of the lock piece is substantially flush with the upper surface of the housing.
Characterized in that the lock piece is attached to a housing as described above .