JP3269367B2 - Connector for cable connection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, for example, in an FA system,
As shown in FIG. 15, and transmits a control signal on-off from the control device 20 such as a programmable controller to transmission terminals 22 ₁ through the cable 21, connected air valve and actuator to the transmission terminal 22 ₁ and controls the output device 23, such as, or transmit a switch signal on-off input from the input device 24 such as a limit switch or sensor connected to the transmission terminal 22 ₂ to the control apparatus 20 via the cable 21 are doing.

In such a system, since it is necessary to connect the control device 20 and the plurality of transmission terminals 22 ₁ and 22 ₂ with the cable 21, as shown in FIG. The configuration is such that the cable 21 is branched and connected to the transmission terminals 22 ₁ and 22 ₂ .

[0004]

As a connector for branching and connecting a cable as described above, for example, there is a flat multi-core electrical cable connector described in Japanese Patent Application Laid-Open No. 3-171572.

In this conventional example, a trunk cable and a branch cable are arranged on the upper and lower surfaces of a housing, and are pressed from above and below via an upper pressing member and a lower pressing member to project from the upper and lower surfaces of the housing. The main cable and the branch cable are pressed against the provided connection member in a conductive state.

However, in such a conventional example, in order to branch at a desired position, the upper pressing member must be strongly pressed against the housing in a state where the main cable is positioned in the housing. In some cases, the housing may be displaced from the branch position in the trunk cable at the time of the press-connecting operation, so that the workability is extremely poor and the reliability of the connection work is lacking.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to provide a cable connection connector which can easily and reliably perform a cable connection operation.

[0008]

In order to achieve the above-mentioned object, the present invention is configured as follows.

[0009] That is, the cable connector of the present invention includes a pair of clamping means for respectively clamping the cables, and a connecting means for connecting said sandwiched the sandwiching means cables conducting state, the The connecting means has a substrate portion and holds each of the holding means on both sides of the substrate portion, respectively, and has a connecting member projecting to both sides while penetrating the substrate portion, wherein each of the holding means is Contact
While not being held by the substrate part of the connection means,
Each cable can be pinched, and each has a pair of pinching members that are connected to be openable and closable at the connecting portion and pinches the cable, and each of the pinching members has an insertion hole through which the connection member is inserted. Formed respectively, the holding means and the connecting means, while holding each holding means at a temporary position separated from the both sides of the substrate portion, when pressing both holding means against the connecting means,
A holding means for holding each holding means at a predetermined position where the cable of the holding means is pressed against the connection member in a conductive state is formed.

An engaging piece is formed on one of the pair of holding members, and an engaging hole for engaging the engaging piece is formed on the other of the pair of holding members, so that the two holding members are engaged with each other. You may make it a state.

[0011] Positioning grooves corresponding to the outer shape of the cable may be formed on the opposing surfaces of the pair of holding members.

[0012] On one surface of the substrate portion of the connection means,
A restriction wall for restricting the position of the end of the cable may be protruded, and a restriction wall may be protruded on the other surface.

Each connecting member of the connecting means has a blade portion at a tip end thereof, and when the both holding means are pressed against the connecting means, the insulating coating of the cable is peeled off by the blade portion. You may.

[0014] The holding means includes an engagement protrusion formed on both side surfaces of each of the holding members, and a vertical protrusion from both ends in a direction perpendicular to a longitudinal direction of the cable in the board portion of the connection means. And an engagement lock that is provided and sequentially engages with the engagement protrusion.

A terminal means is provided only on one side of the substrate part of the connecting means, and a terminating resistor is interposed on the other surface side of the substrate part of the connecting means. By attaching to the side, the cable may be connected to a terminating resistor.

According to the connector for cable connection of the present invention, after the cables to be connected to each other are sandwiched between the holding means, each holding means is held by the connection means, so that the cables are held directly by the connection means. Compared to a simple configuration,
Connection work becomes easy.

Moreover, since each holding means is temporarily held at a temporary position separated from the substrate portion of the connection means, the cable is slidable in a state of being held by the holding means, so that the temporary position is maintained. In this state, the connection position of the cable can be adjusted.

Then, by pressing both holding means against the connecting means from the temporary position, the cables of each holding means are pressed against the connecting member in a conductive state, and both cables are electrically connected via the connecting member. Will be connected.

An engaging piece is provided on one of the pair of holding members,
On the other hand, by forming an engagement hole for engaging with the engagement piece, it is possible to maintain a closed state in which the cable is sandwiched, and handling becomes easy.

By forming a cable positioning groove on the opposing surfaces of the pair of holding members, the cable can be reliably held at a predetermined position, and a reliable connection can be obtained when the cables are pressed.

By providing a restricting wall for restricting the position of the end of the cable on one or both surfaces of the board portion of the connecting means, the end of the cable can be reliably aligned. .

By providing a blade at the tip of each connecting member of the connecting means, the insulating coating of the cable may be peeled off by the blade when both holding means are pressed against the connecting means.

The holding means is provided with engaging projections formed on both side surfaces of each holding member, and engaging means projecting vertically from both ends of the substrate portion and sequentially engaging with the engaging protrusions. With the configuration having the lock, when the engagement lock engages with the engagement protrusion of one of the holding members, it is held in the temporary position, and the engagement protrusion of the other holding member engages with the engagement lock. Then, the cable can be held at a predetermined position where the cable is electrically connected.

[0024] By using only one holding means and interposing a terminating resistor between the connecting members on the other surface side of the substrate portion of the connecting means, the one holding means holds the end of the cable to the connecting means. By attaching the cable to the terminal, a terminating resistor can be connected between signal lines at the end of the cable, and communication between the control device and the transmission terminal can be performed without any trouble.

[0025]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an exploded perspective view of a cable connecting connector according to one embodiment of the present invention. The cable connecting connector electrically connects flat cables to each other.

The cable connecting connector 1 of this embodiment basically includes first and second holding means for holding cables 2 and 3 to be connected to each other.
This embodiment includes a second cover 4, 5 and a contact block 6 as connection means for electrically connecting the cables 2, 3 sandwiched between the covers 4, 5 in a conductive state. In this embodiment, the branch cable 2 sandwiched by the first cover 4 and the trunk cable 3 sandwiched by the second cover 5 are connected to each other to branch the trunk cable 3.

For example, contact block 6 made of synthetic resin
As shown in the side view of FIG. 2 and the cross-sectional view of FIG. 3, the first and second covers 4 and 5 have a substrate portion 7 for holding the first and second covers 4 and 5 on the upper and lower surfaces, respectively, as described later. In this embodiment, a plurality of contacts 8 as conductive connecting members projecting vertically through the substrate portion 7 are provided.
It is provided by four press fits. In addition, as another embodiment of the present invention, the contact 8 may be provided by insert molding.

The contacts 8 are made of, for example, a copper alloy, and are arranged two at a time on the front side and two on the back side, respectively. 8a are formed, and as described below,
When the first and second covers 4 and 5 are pressed against the contact block 6, the blades 8a allow the cables 2 and 3 to be pressed.
Is stripped off so that the conductors of the cables 2 and 3 are pressed against the contacts 8.

The longitudinal direction of the cable on the upper surface of the substrate 7 of the contact block 6 (the left-right direction in FIG. 2).
A restricting wall 7a for positioning the end of the branch cable 2 protrudes from one end of the base member 7.
Is formed with a through hole 7b so that the direction of press-fitting the contact 8 while holding the contact block 6 on a jig is not mistaken. Further, on both ends in a direction perpendicular to the longitudinal direction of the cable of the board portion 7 (left-right direction in FIG. 3), engagement protrusions 11d described later formed on the first and second covers 4 and 5 are provided. , 12d, 13d, and 14d, a gate-shaped engagement lock 7c that protrudes upward and downward to hold each cover 4, 5 at a required position.

Numbers "1" and "2" for specifying the covers 4 and 5 to be attached are respectively attached to the upper and lower surfaces of the substrate 7 of the contact block 6.

The first and second covers 4 and 5 made of synthetic resin for holding the respective cables 2 and 3 are also shown in the open plan view of FIG. 4, the rear view of FIG. 5, and the cross sectional view of FIG. As shown, a pair of first and second holding members 11 and 1 that are openably and closably connected by two hinge portions 9 as connection portions.
2; 13 and 14 respectively;
1, 12; 13 and 14, positioning grooves 11a and 12 having an arc-shaped cross section corresponding to the outer shape of the cables 2 and 3.
a; 13a and 14a are arranged side by side along the longitudinal direction of the cable, a plurality of which are four in this embodiment.
4 to 6 show only the first cover 4, the configuration of the second cover 5 is basically the same.

When the covers 4 and 5 are held on the contact block 6, the second holding members 12 and 14 on the side of the covers 4 and 5 which are close to the contact block 6 are provided so as to protrude from the substrate portion 7. Rectangular insertion holes 12b and 14b through which the four contacts 8 are respectively inserted are formed,
The first holding members 11 and 13 have second holding members 12 and
Concave portions 11b and 13b for accommodating the blade portion 8a at the tip of the contact 8 are formed on the surface facing 14.

At two open ends of the second holding members 12 and 14, hooks 12c and 14c as engagement pieces are protruded, while the open ends of the first holding members 11 and 13 are provided. Engagement holes 11c and 13c with which the hooks 12c and 14c are engaged are formed at two corresponding positions, and the first holes are formed by engaging the hooks 12c and 14c with the engagement holes 11c and 13c. , Second holding members 11, 12; 1
3 and 14 are configured to be held in a closed state.

The present invention is not limited to the hooks 12c, 14c and the engaging holes 11c, 13c, but it is sufficient that the holding members 11, 12; 13, 14 can be kept closed. Other configurations such as mating projections and engaging recesses may be used.

First engaging projections 11d and 13d are formed at substantially the centers of both side surfaces of the first holding members 11 and 13, and both of the second holding members 12 and 14 are substantially formed. Two second engagement protrusions 12d and 14d are formed at the center. Each engagement projection 11d, 13d, 12d, 1
4 d has an inclined surface, and the first and second covers 4
When the contact block 6 is held by the contact block 6, the engaging projections 11d, 13d, 12d, and 14d are configured to be smoothly guided and engaged with the gate-shaped engaging lock 7c of the contact block 6. I have.

The first holding member 1 of each of the covers 4 and 5
Numbers “1” and “2” that specify the surface of the contact block 6 to be mounted on the substrate unit 7 are assigned to the numbers 1 and 13, respectively.

In this embodiment, when the first and second covers 4 and 5 are pushed into the upper and lower surfaces of the substrate portion 7 of the contact block 6, first, as shown in FIG. With the second engagement projections 12d and 14d of the covers 4 and 5 engaged with the engagement lock 7c, the first and second covers 4 and
5 is held at a temporary position separated from the substrate portion 7 of the contact block 6, and furthermore, by pressing the covers 4, 5 against each other, as shown in FIG. , 13d are engaged with the engagement lock 7c.
The second covers 4 and 5 are held at predetermined positions of the contact block 6 in contact with the substrate 7. That is, the first and second engagement protrusions 11 of each of the covers 4 and 5
The holding means for holding the covers 4 and 5 on the contact block 6 is constituted by d, 13d, 12d and 14d and the engagement lock 7c of the contact block 6. In FIG. 7, the first and second covers 4 and 5 include:
Has been hatched.

Next, a procedure for connecting a cable using the cable connector having the above-described configuration will be described.

First, the branch cable 2 is connected to the first cover 4.
Are arranged in the positioning grooves 11a or 12a formed on the opposing surfaces of the respective holding members 11, 12,
2 and the hook 12c of the second holding member 12 is
The first cover 4 is closed by engaging the first holding member 11 with the engagement hole 11c. In this closed state, the branch cable 2 can be slid in the longitudinal direction, so that the end of the branch cable 2 and the end of the first cover 4 are aligned.

Next, it is held by the contact block 6.
First cover 4 holding the branch cable 2 in a state where it is not
Is pushed into the upper surface side of the substrate portion 7 of the contact block 6 and is held at a temporary position where the second engagement protrusion 12d is engaged with the engagement lock 7c. At this time, the end of the branch cable 2 is held so as to be on the side of the regulating wall 7a of the contact block 6, and the end of the branch cable 2 is slid to a position where it comes into contact with the regulating wall 7a.

On the other hand, the trunk cable 3 is connected to the second cover 5
Are arranged in the positioning grooves 13a or 14a formed on the opposing surfaces of the respective holding members 13 and 14, and the two holding members 13, 1
4, the hook 14c of the second holding member 14 is
The second cover 5 is closed by engaging with the engagement hole 13c of the first holding member 13, and the trunk cable 3 is slid to a position to be branched.

Next, it is held by the contact block 6
Second cover 5 holding trunk cable 3 in a non-existent state
Is pushed into the lower surface side of the substrate portion 7 of the contact block 6 and is held at a temporary position where the second engagement protrusion 14d engages with the engagement lock 7c.

Then, in this state, the first and second covers 4 and 5 are pressed against the contact block 6 by a tool such as a plier, and thereby, as shown in FIG. Of the first engagement projections 11d, 13d
Are engaged with the engagement lock 7c of the contact block 6,
It is held in place and integrated. At this time, the insulating coating of the cables 2 and 3 sandwiched between the covers 4 and 5 is peeled off by the blade portions 8a of the contacts 8 of the contact block 6, and the internal conductors are pressed against the contacts 8 to form a connection with the branch cable 2. The main cable 3 is electrically connected.

In the above-described embodiment, the branch cable 2 is connected to the main cable 3 for branching. However, as another embodiment of the present invention, the main cable 3 is connected to the main cable 3 to extend the cable. You may make it.

[0046] Figure 9 is a side view of a contact block ₆₁ for use in the extension of such cable, the parts corresponding to the embodiment described above, the same reference characters.

In the above-described embodiment, the restriction wall 7a is provided at one end of the cable in the longitudinal direction of the cable on one surface of the substrate portion 7 of the contact block 6.
In this embodiment, a regulating wall 7d for positioning the end of the cable is also provided on the other end of the cable in the longitudinal direction of the cable on the other surface of the substrate portion 7. Other configurations are the same as those of the above-described embodiment.

In this embodiment, the connection between the trunk cables is performed in the following procedure.

First, one trunk cable 3 is sandwiched between the two holding members 11 and 12 of the first cover 4, and the hook 12 c of the second holding member 12 is inserted into the engagement hole 11 c of the first holding member 11. Engaging the first cover 4 to a closed state,
The end of the trunk cable 3 and the end of the first cover 4 are aligned.

Next, the first cover 4 which sandwiches trunk cable 3, is pushed on the upper surface side of the substrate portion 7 of the contact block _61, the second engagement protrusions 12d engagement lock 7c
Is held at a temporary position where it engages with. And trunk cable 3
End of, it slid into position abutting the restriction wall 7a of the contact block _61.

Next, the other trunk cable 3 is sandwiched between the two holding members 13 and 14 of the second cover 5, and the hook 14 c of the second holding member 14 is engaged with the engagement hole 13 c of the first holding member 13. And the second cover 5 is closed.
The end of the trunk cable 3 and the end of the second cover 5 are aligned.

Next, the second cover 5 which sandwiches trunk cable 3, is pushed on the lower surface side of the substrate portion 7 of the contact block _61, the second engagement protrusions 14d engagement lock 7c
Is held at a temporary position where it engages with. And trunk cable 3
End of, it slid into position abutting the restriction wall 7d of the contact block _61.

[0053] In this state, the first by a tool such as pliers, a second cover 4 and 5 pressed against the contact block _61, whereby, as shown in FIG. 10, the cover 4, 5 first engagement protrusions 11d, 1
3d is engaged with the engagement lock 7c of the contact block 6, is held at a predetermined position and is integrated, and the two trunk cables 3, 3 are electrically connected via the contact 8.

In each of the above embodiments, the trunk cable 3
Is connected to the branch cable 2 or another trunk cable 3, but as another embodiment of the present invention, a terminating resistor is connected to the end of the trunk cable 3 so that the control device and the transmission terminal are connected. The communication between and may be performed without any trouble.

[0055] Figure 11 is a side view of the contact block 6 ₂ and the cover 16 connected to the end of such a cable, FIG. 12 is a sectional view thereof, the parts corresponding to the embodiment described above Have the same reference numerals.

[0056] The contact block 6 _2, substrate portion 7
As shown in FIG. 13, a terminating resistor 15 is connected between the contacts 8 connected to the signal lines of the cable, and a cover 16 covering this lower surface is mounted on the lower surface of the.

[0057] The cover 16, as in the above-described embodiments, not for holding the cable, which covers the lower surface of the substrate 7, in the factory, pre-mounted on the contact block 6 ₂ Have been.

[0058] cover 4 mounted to the structure and the upper surface of the upper surface of the base plate portion 7 of the contact block 6 ₂ is the same as the embodiment described above.

[0059] In this embodiment, the end of the cable 3, the upper surface of the contact block 6 ₂ by sandwiching the same cover 4 and the above-described embodiment, by pressing in the same manner as the above-described embodiment As shown in FIG.
End of the cable 3 will be electrically connected to the lower surface of the terminating resistor 15 of the contact block 6 _2.

In each of the above embodiments, the contact blocks 6, 6 ₁ and 6 ₂ are provided with the restricting walls 7a and 7d, however, the restricting walls may be omitted as another embodiment of the present invention. Good.

In each of the above-described embodiments, each cover as the holding means has a pair of holding members and a hinge portion integrally formed. However, as another embodiment of the present invention, individual holding members are connected. You may comprise so that opening and closing may be connected by a member.

[0062]

As described above, according to the present invention, after the cables to be connected to each other are respectively inserted into the respective holding means having a pair of openable and closable holding members, the respective holding means are held by the connecting means. As a result, the cable can be easily handled and the connection operation can be easily performed as compared with a configuration in which the cable is directly held by the connection means.

Moreover, since each holding means is temporarily held at a temporary position separated from the substrate portion of the connection means, the cable is slidable in a state of being held by the holding means, so that the provisional position is maintained. In this state, the connection position of the cable can be adjusted, whereby the cable can be branched at a desired position.

An engaging piece is provided on one of the pair of holding members,
On the other hand, by forming an engagement hole for engaging with the engagement piece, the closed state in which the cable is sandwiched can be maintained, and handling is further facilitated.

By forming the cable positioning groove on the opposing surfaces of the pair of holding members, the cable can be reliably held at a predetermined position, and a reliable connection can be obtained when the cables are pressed.

By providing a restricting wall for restricting the position of the end of the cable on one or both surfaces of the board portion of the connection means, the end of the cable can be reliably aligned. .

By using only one holding means and interposing a terminating resistor between the connecting members on the other surface side of the substrate part of the connecting means, the one holding means holds the end of the cable to the connecting means. By attaching the terminating resistor, the terminating resistor can be connected between the signal lines of the cable, and communication between the control device and the transmission terminal can be performed without any trouble.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a cable connector according to an embodiment of the present invention.

FIG. 2 is a side view of the contact block of FIG.

FIG. 3 is a sectional view of the contact block of FIG. 2;

FIG. 4 is a plan view of the first cover of FIG. 1 in an open state.

FIG. 5 is a rear view of the first cover of FIG. 4;

FIG. 6 is a sectional view of the first cover of FIG. 4;

FIG. 7 is a side view of a main part before and after the first and second covers are pressed against the contact block.

FIG. 8 is a side view showing a state in which a cable is connected by a cable connection connector.

FIG. 9 is a side view of a contact block according to another embodiment of the present invention.

FIG. 10 is a side view showing a state where cables are connected by the cable connection connector according to the embodiment of FIG. 9;

FIG. 11 is a side view of a contact block and a cover according to another embodiment of the present invention.

FIG. 12 is a sectional view of the contact block of FIG. 11;

FIG. 13 is a plan view showing the lower surface side of the contact block of FIG. 11;

FIG. 14 is a side view showing a state where cables are connected by the cable connection connector according to the embodiment of FIG. 11;

FIG. 15 is a configuration diagram of a control system in which a cable connector is used.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS ₁ Connector for cable connection 2 Branch cable 3 Trunk cable 4,5 First and second covers (clamping means) 6,61,6 ₂ Contact block (connection means) 7 Substrate part 7a, 7d Regulatory wall 8 Contact 8a Blade Part 9, 10 Hinge part (connection part) 11, 13 First holding member 12, 14 Second holding member 12b, 14b Insertion hole

Continuation of the front page (56) References JP-A-60-158566 (JP, A) JP-A-53-64793 (JP, A) JP-A-7-311820 (JP, A) JP-A-6-89749 (JP) JP-A-5-343114 (JP, A) JP-A-6-62468 (JP, U) JP-A-7-18357 (JP, U) JP-A-2-64161 (JP, U) Field surveyed (Int.Cl. ⁷ , DB name) H01R 4/24 H01R 12/38

Claims (8)

(57) [Claims] Comprising a pair of clamping means as claimed in claim 1] each cable respectively pinching, and connection means for connecting said sandwiched the sandwiching means cables conducting state, said connecting means includes a substrate portion A holding member that holds each holding means on both sides of the substrate part, and protrudes on both sides while penetrating the board part, wherein each holding means holds the holding means on the substrate part of the connection means. Sa
Each cable can be pinched when not connected
A is and, with each having openable linked pair of holding members sandwich the cable to a connecting portion, each one of the clamping member, an insertion hole in which the connecting member is inserted are respectively formed, wherein The holding means and the connection means hold each holding means at a temporary position separated from the both surfaces of the substrate portion, and when both holding means are pressed against the connection means, each holding means is connected to the holding means by the holding means. A connector for cable connection, wherein holding means for holding the cable at a predetermined position pressed against the connection member in a conductive state is formed. 2. An engaging hole which is formed on one of the pair of holding members and which is engaged with the other of the pair of holding members, thereby closing the two holding members. The connector for cable connection according to claim 1, wherein: 3. The cable connection connector according to claim 1, wherein positioning grooves corresponding to the outer shape of the cable are formed on the opposing surfaces of the pair of holding members. 4. A restricting wall for restricting the position of the end of the cable is provided at one end of the connection means on one surface of the substrate in the longitudinal direction of the cable. 4. The connector for connecting a cable according to any one of items 3 to 3. 5. A restricting wall for restricting the position of the end of the cable is protruded from the other end of the cable in the longitudinal direction of the cable on the other surface of the board portion of the connection means. Connector for cable connection as described. 6. The connecting member of the connecting means has a blade portion at a tip end thereof, and when the both holding means are pressed against the connecting means, the insulating coating of the cable is peeled off by the blade portion. The cable connector according to any one of claims 1 to 5, wherein the cable connector is used. 7. The holding means includes an engagement protrusion formed on each of both side surfaces of each of the holding members, and an up-and-down movement from both ends in a direction perpendicular to a longitudinal direction of the cable in the board portion of the connection means. 7. The cable connection connector according to claim 1, further comprising: an engagement lock protruding from the connector and sequentially engaging with the engagement projection. 8. A holding means for holding a cable, and a connecting means for connecting the cable held by the holding means in a conductive state, wherein the connecting means has a substrate portion, and A holding member is held on one surface side, and has a connecting member projecting to both surfaces while penetrating the substrate portion, and a terminal resistor is interposed between the connecting members projecting to the other surface side of the substrate portion. The holding means is held by the substrate portion of the connection means.
The cable can be clamped without
And a pair of holding members which are openably and closably connected by a connecting portion to hold the cable, and one of the holding members is formed with an insertion hole through which the connection member is inserted. The holding means and the connection means Holds the holding means at a temporary position separated from the one surface of the substrate portion, and when the holding means is pressed against the connection means, the holding means is connected to the connection member while the cable is in a conductive state. A connector for holding the cable at a predetermined position pressed against the cable connector.