JPH09283193A - Cable branch connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable branch connector in which the workability and the reliability of connection can be enhanced in the case where a cable to be connected is not only a flat cable but also a twist pair cable. SOLUTION: A cable branch connector is provided with a case 3 which has a cable supporting pole 4 which adjoining arranges a main line 1 and a branch line 2 to be connected in parallel so as to support, a pressure connection terminal 6 which connects the main line 1 and the branch line 2, a cover 20 which is formed so as to be mountable on the case 3, and engaging means 10, 11 which hold the cover 20 in a temporal engaging state parting from the case 3 by a predetermined distance and simultaneously fix the cover in a state where the cover is mounted on the case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable branch connector for electrically connecting a multicore trunk cable and a multicore branch cable.

[0002]

2. Description of the Related Art As a conventional cable branch connector, for example, one disclosed in Japanese Utility Model Laid-Open No. 6-62468 is known. Hereinafter, such a conventional cable branch connector will be described. FIG. 17 is an assembled perspective view showing a conventional cable branch connector, in which 121 is a housing, 122 is a first cable receiving portion for receiving a main cable 128 for signal transmission or power supply, and 123 is a branch cable 130. Is a second cable receiving part for receiving
They are formed on the front and back surfaces of the housing 121, respectively.
Reference numeral 124 is a contact member that is insert-molded in the housing 121 and protrudes into each of the cable receiving portions 122 and 123, and has a conductive contact member. 129
And 131 are covers, which are the cable receiving portions 122, 12
3, a cable receiving portion 132 corresponding to 3 is formed, and an engaging piece 133 is formed. Reference numerals 134 and 135 are first and second engagement holes formed in the engagement piece 133.

Next, the operation will be described. Cover 12
9 and 131 are attached to the housing 121 with a predetermined distance therebetween, the engaging protrusions 125, 1 of the housing 121
26 engages with the first engagement hole 134 of the engagement piece 133, and the engagement protrusions 125 and 126 engage with the second engagement hole 135 in a completely attached state. Then, by the contact member 124, the trunk cable 128 arranged above and below
And the branch cable 130 are electrically connected.

[0004]

Since the conventional cable branch connector is constructed as described above, when the main cable 128 and the branch cable 130 are flat cables, they are formed on the front and back surfaces of the housing 121. It is easy to attach to the cable receiving portions 122 and 123. However, in the case of a so-called twisted pair cable in which the trunk line or branch lines are disjointed, each line should be
It is necessary to work while temporarily holding the cable receiving portions 122 and 123 on the front and back of the housing 121 while checking one by one, which causes a problem that work efficiency is poor and the mounting place is apt to be mistaken.

Further, since it is difficult to temporarily hold the twisted pair cable at the time of mounting, the working efficiency is further deteriorated when the working space is restricted, such as in a complicated place or a narrow place, and the cable comes off during pressure welding. There was a problem such as closing.

Further, since the holding of the cable after the pressure contact depends only on the contact member 124, there is a problem that the holding force is weak when the cable is pulled and the cable is easily pulled out.

As described above, no cable branch connector has been provided so far that can effectively cope with the installation of twisted pair cables.

The present invention has been made in order to solve the above-mentioned problems, and not only when the cable to be connected is a flat cable but also when the cable is a twisted pair cable, the workability and the reliability of the connection are improved. The purpose is to obtain a cable branch connector that can increase the power consumption.

[0009]

A cable branch connector according to a first aspect of the present invention includes a case having a holding member for arranging and holding a trunk line and a branch line to be connected adjacent to each other in parallel, and a trunk line. A conducting member for electrically connecting the wire and the branch line, a cover formed to be attachable to the case, and an engagement for holding the cover in a temporary engagement state in which the cover is separated from the case by a predetermined distance and fixing the cover in the state of being attached to the case. And means.

In the cable branch connector according to the invention of claim 2, the cover is provided with a pressing protrusion for pressing the main line and the branch line to the case side when the cover is attached to the case.

According to a third aspect of the present invention, there is provided a cable branch connector in which the conducting member is connected by arranging the pressure contact blades in pressure contact with the main line, the pressure contact blades in pressure contact with the branch lines, and the two pressure contact blades in an oblique direction. And a connecting piece for connecting.

In the cable branch connector according to the invention as defined in claim 4, the branch line end insertion hole for inserting and holding the end portion of the branch line is provided in the case.

According to the fifth aspect of the present invention, there is provided a cable branch connector in which a case is provided with a branch line holding rib for pressing and holding the vicinity of the end of the branch line.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1. 1 is an assembled perspective view showing a cable branch connector according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing a pressure contact terminal, FIG. 3 is a perspective view showing a case before the pressure contact terminal is assembled, and FIG. 4 is a pressure contact terminal. 6 is a perspective view showing the case after the assembling, FIG. 5 is a plan view showing the inside of the case, FIG.
Is a plan view showing the inside of the cover, FIG. 7 is a front vertical sectional view showing a state before the cover is attached to the case, FIG. 8 is a side vertical sectional view of FIG. 7, and FIG. 9 is a temporary fixing of the trunk line and the branch line to the case. FIG. 10 is a plan view showing a state in which the branch line end is inserted into the branch line end insertion hole, FIG. 11 is a view showing a state in which the cover and the case are pressure-welded with a commercially available tool, and FIG. 12 is a view showing the cover. FIG. 13 is a front vertical sectional view showing a state where the cover is temporarily fixed to the case, FIG. 13 is a perspective view showing a state where the cover is pressed against the case, FIG. 14 is a front vertical sectional view of FIG. 13, and FIG. A sectional view, FIG. 16 is a side surface vertical sectional view showing a pressure contact state of a branch line.

In FIGS. 1 to 6, reference numeral 1 is a trunk line forming a trunk cable which is a twisted pair cable for signal transmission or power supply, and 2 is a branch line for branching from the trunk line. The main line 1 and the branch line 2 are described as twisted pair cables, but they may be flat cables.

Reference numeral 3 designates a cable holding column 4 which holds the main line 1 and the branch line 2 to be connected adjacent to each other and arranged in parallel with each other.
It is a case having a (holding member). The outer surface shape of the case 3 is formed so that the contact area with the pressure welding tool is increased as much as possible and the contact force is even when the cover 20 is pressure contacted with the commercially available pressure welding tool.

Reference numeral 4a denotes a trunk line holding projection for sandwiching the trunk line 1 between the cable holding columns 4 and temporarily fixing it, and 4b denotes a branch line holding projection for sandwiching the branch line 2 between the cable holding columns 4 and temporarily fixing it. Is a cable bending rib that clamps a cable when the case 3 and a cover 20 to be described later are press-fitted. As shown in FIGS. 15 and 16, the cable receiving end 3a at the upper edge of the case 3 and the lower end of the cover 20 are shown. The cable is held by the cable pressing end 20a at the edge portion.

Reference numeral 6 denotes a pressure contact terminal (conduction member) made of, for example, a copper alloy for electrically connecting the main line 1 and the branch line 2 to be connected. This pressure contact terminal 6 has two pressure contact blades 6a having a U-shaped groove into which the trunk line 1 or the branch line 2 is press-fitted.
And a connecting piece 6 that connects them by arranging them diagonally.
b. Therefore, the blades of the main line 1 and the branch line 2 are not distinguished, and the press-contact blade may come in either direction at the time of press-fitting. The press contact blade 6a is formed so as to break the coating of the trunk line 1 and the branch line 2 to be press-fitted so as to be able to conduct electricity. Further, at the lower part of the press contact blade 6a, after the press contact terminal 6 is press-fitted into the press contact terminal press-fitting portion 7 recessed in the case 3, a protrusion 6c is provided to prevent the press contact terminal 6 from coming off.

Reference numeral 8 denotes a branch end insertion hole provided in the case 3 for inserting and holding the end of the branch 2.

Reference numeral 9 denotes a branch line 2 provided on the cable holding column 4.
Is a pair of branch line holding ribs that press and hold the vicinity of the terminal end of the. The branch holding rib 9 has a substantially horizontal cross section and is formed such that the distance between the pair is narrower toward the lower side. In other words, the pressing force received from the branch line holding ribs 9 becomes stronger as the branch lines 2 are press-fitted below the cable holding columns 4.

As shown in FIG. 5, the internal structure of the case 3 composed of these constituent members has a 180-degree rotational symmetry, so that the case 20 and the cover 20 can be easily arranged without considering the orientation of the case 3. It can be pressed.

Reference numeral 10 denotes a temporary locking portion (engagement) provided on the outer surface of the case 3 in order to hold the cover 20 in a temporary engagement state in which the cover 20 is separated from the case 3 by a predetermined distance during the mounting process of the cover 20 to the case 3. It is a means).

Reference numeral 11 denotes an engaging portion (engaging means) which is provided on the outer side surface of the case 3 and protrudes below the temporary engaging portion 10 so as to be spaced apart, since the cover 20 is fixed to the case 3 in a mounted state. )
It is. The temporary engagement state can be created by the distance between the temporary engagement portion 10 and the engagement portion 11.

Reference numeral 12 denotes a guide portion which engages with a slit portion 22 provided on the cover 20 and positions the both when the cover 20 and the case 3 are mounted.

Reference numeral 20 is a cover formed so as to be attachable to the case 3. The outer surface shape of the cover 20 is formed such that, when the cover 3 is pressed against the case 3 by a commercially available pressing tool, the contact area with the pressing tool is as large as possible and the contact force is even. Further, the peripheral edge portion of the opening of the cover 20 is provided with a predetermined shape so that the trunk line 1 and the branch line 2 can be inserted when the cover 3 is pressed against the case 3.

Further, as shown in FIG. 6, the internal structure of the cover 20 is 180 ° rotationally symmetrical, and the cover 2
The case 3 can be easily pressed into contact with the case 3 without considering the direction of 0.

Reference numeral 21 is a pressing protrusion that presses the main line 1 and the branch line 2 toward the case 3 when the cover 20 is attached to the case 3.

Reference numeral 22 is a slit portion that engages with the guide portion 12 of the case 3.

Reference numeral 24 is an engaging protrusion (engaging means) which can be engaged with the temporary engaging portion 10 and the engaging portion 11 of the case 3.

Next, the operation will be described. 7 and 8
As shown in, the main line 1 and the branch line 2 to be connected are arranged adjacent to each other and are arranged in parallel at a predetermined position. In this case, since the main line 1 and the like have a predetermined color on the coating, the adjacent arrangement work can be easily performed. And then, as shown in FIG.
The trunk line 1 is engaged with the pressure contact terminal 6, and is sandwiched between the cable holding columns 4 by the trunk line holding projections 4a to be temporarily fixed.

Further, the branch line 2 is inserted into and held by the branch line end insertion hole 8 (FIG. 10), is held by the branch line holding rib 9, and is further held by the branch line holding projection 4b for holding the cable. It is sandwiched between the pillars 4 and temporarily fixed.
As described above, the trunk line 1 and the branch line 2 are easily temporarily fixed to the case 3.

Next, as shown in FIG. 12, the engaging protrusion 24 of the cover 20 is engaged with the temporary locking portion 10 of the case 3,
The case 3 and the cover 20 are temporarily fixed. At this time, since the slit portion 22 and the guide portion 12 are engaged with each other, the case 3 and the cover 20 can be easily and quickly positioned.

Then, as shown in FIG. 11, the case 3 and the cover 20 are sandwiched by using a commercially available pressure welding tool 22, and as shown in FIG.
As shown in FIG. 4, the engagement protrusion 24 is pressed against the locking portion 11 until it is engaged. Then, the pressing protrusion 21 of the cover 20
Thereby, the trunk line 1 and the branch line 2 are pressed toward the case 3 side.
At this time, the trunk line 1 and the branch line 2 are broken by the press contact blades 6a and are brought into conduction, so that the branch connection is completed. Further, at this time, the main line 1 and the branch line 2 are bent by the cover 20 and the bending rib 5 and pulled outward, so that the portion where the covering is broken by the press contact blade 6a further increases, and the core wire of the main line 1 and the press contact blade 6a are separated. The contact area is increased and the connection reliability is increased.

The main line 1 and the branch line 2 after pressure welding are shown in FIG.
Also, as shown in FIG. 16, since the cover 20 and the bending rib 5 are bent and firmly clamped, it is difficult to apply the tension to the pressure contact terminal 6 even if it is pulled outward, and damage or the like can be prevented. Reliability is increased.

As described above, according to the first embodiment, not only when the cable to be connected is the flat cable but also when the cable is the twisted pair cable, the temporary fixing and the pressure welding work can be easily performed. There is an effect that the workability and reliability of can be improved.

Particularly, since the connector parts required for the pressure contact are only the case 3 and the cover 20 to which the pressure contact terminals 6 are assembled in advance, the connection work is easy and the cost of the parts can be reduced.

Further, since the branch line end insertion hole 8 is provided in the case 3, the processing position of the end portion 2a of the branch line 2 can be recognized at a glance, and the temporary fixing work can be performed quickly.

When the cover 20 is attached to the case 3,
Since the internal structures of both the case 3 and the cover 20 are 180 ° rotationally symmetrical, they can be easily mounted without the operator having to consider their orientations, and workability is good.

Furthermore, since the case 3 and the cover 20 can be temporarily fixed, the operator can easily carry out the pressure welding work by holding the temporarily fixed case 3 or the like in one hand and the pressure welding tool in the other hand.

In the present embodiment, the cable branch connector has been described as being used for branching the cable, but it can be used for other purposes such as extension of the cable and coupling of device blocks. .

[0041]

As described above, according to the first aspect of the invention, the case having the holding member for holding the main line and the branch line to be connected adjacent to each other and arranging them in parallel, and the main line and the branch line A conducting member for conducting the above, a cover formed so as to be attachable to the case, and an engagement means for holding the cover in a temporary engagement state separated from the case by a predetermined distance and fixing the cover in the state of being attached to the case. Since it was configured with, not only when the cable to be connected is a flat cable,
Even in the case of a twisted pair cable, there is an effect that workability and reliability of connection can be improved.

According to the second aspect of the present invention, since the cover is provided with the pressing protrusions that press the main line and the branch line toward the case when the cover is attached to the case, the main line and the branch line are held more firmly. , Has the effect of increasing the reliability of the connection.

According to the third aspect of the present invention, the conducting member includes the press contact blades that press contact with the main line, the press contact blades that press contact with the branch line, and the connecting piece that connects the two press contact blades in an oblique direction. Since it is configured by including, the adjacent main line and the branch line can be surely conducted with a simple shape, and there is an effect that it is not necessary to determine the order by the signal of the cable at the time of assembling, and workability is improved.

According to the invention described in claim 4, since the branch end insertion hole for inserting and holding the end of the branch is provided in the case, it is easy to hold the end of the branch and the assembling workability is improved. Has the effect of improving.

According to the invention of claim 5, since the branch line holding rib for pressing and holding the vicinity of the end portion of the branch line is provided in the case, the branch line held in the branch line end insertion hole is held more firmly. Therefore, there is an effect that it becomes difficult to pull out from the branch line end insertion hole, and workability and reliability of connection are further improved.

[Brief description of drawings]

FIG. 1 is an assembled perspective view showing a cable branch connector according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a press contact terminal.

FIG. 3 is a perspective view showing a case before the pressure contact terminal is assembled.

FIG. 4 is a perspective view showing the case after the pressure contact terminal is assembled.

FIG. 5 is a plan view showing the inside of the case.

FIG. 6 is a plan view showing the inside of the cover.

FIG. 7 is a front vertical sectional view showing a state before the cover is attached to the case.

8 is a side vertical cross-sectional view of FIG.

FIG. 9 is a plan view showing a state in which a trunk line and a branch line are temporarily fixed to a case.

FIG. 10 is a diagram showing insertion of a branch line end into a branch line end insertion hole. .

FIG. 11 is a diagram showing a state in which the cover and the case are pressed against each other with a commercially available tool.

FIG. 12 is a front vertical sectional view showing a state where the cover is temporarily fixed to the case.

FIG. 13 is a perspective view showing a state in which the cover is pressed against the case.

FIG. 14 is a front vertical sectional view of FIG.

FIG. 15 is a side surface vertical cross-sectional view showing a state in which the main line is pressure-welded.

FIG. 16 is a side surface vertical sectional view showing a pressure contact state of a branch line.

FIG. 17 is an assembled perspective view showing a conventional cable branch connector.

[Explanation of symbols]

 1 Main Line 2 Branch Line 2a End Part 3 Case 4 Cable Holding Column (Holding Member) 6 Pressure Contact Terminal (Conductive Member) 6a Pressure Contact Blade 6b Connecting Piece 8 Branch Line End Insertion Hole 9 Branch Line Holding Rib 10 Temporary Locking Part (Engaging Means) 11 Locking part (engagement means) 20 Cover 21 Pressing projection part 24 Engagement projection part (engaging means)

Claims (5)

[Claims] 1. A case having a holding member for adjoining a main line and a branch line to be connected and arranging and holding the main line and a branch line in parallel,
A conducting member provided in the case for conducting the trunk line and the branch line to be connected, a cover formed so as to be attachable to the case, and a predetermined distance from the case in the process of attaching the cover to the case. A cable branching connector, which is provided with an engaging means that holds the cover in a temporarily engaged state and is secured while the cover is attached to the case. 2. The cable branch connector according to claim 1, wherein the cover is provided with a pressing protrusion that presses the main line and the branch line toward the case when the cover is attached to the case. 3. The conductive member includes a press contact blade that press contacts with the main line,
The cable branching connector according to claim 1 or 2, further comprising: a pressure contact blade that is in pressure contact with the branch line, and a connecting piece that connects the two pressure contact blades in an oblique direction. 4. The cable branch connector according to claim 1, wherein a branch end insertion hole for inserting and holding an end of the branch line is provided in the case. 5. A branch line holding rib for pressing and holding the vicinity of the end of the branch line is provided on the case.
Cable branch connector described.