JPH0955238A - Terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily release an electrical wire connected through locking. SOLUTION: A locking terminal 41 is housed in a case body 11. An electrical wire insertion hole 21 is formed in the case body 11 while being faced to the locking connection part 48 of the locking terminal 41. A release hole 22 is formed in the case body 11 while being adjacent to the electrical wire insertion hole 21, and also being faced to the oblique plate part 46 of the locking terminal 41. A partition part 31 is formed between the electrical wire insertion hole 21 and the release hole 22. The surface at the partition part 31 side of the release hole 22 is made a vertical partition surface 32, and surface faced to the vertical partition surface is made an inclined guide surface part 33. The inclined angle of the guide surface part 33 is so set that the upper surface of the oblique plate part 46 is roughly flush with the guide surface part 33 of the case body 11 in a state that the core line W1 of an electrical wire W is inserted into the locking connection part 48. As a release member to be inserted into the release hole 22, the electrical wire W can thereby be used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal device provided with a locking terminal to which an electric wire is connected by a lock and capable of releasing the connected electric wire.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 4-109563.
The terminal device described in the publication is known. This terminal device is attached to a printed circuit board, and is constructed by fitting a locking terminal formed by bending a metal plate inside a case body made of synthetic resin. Then, the locking terminal is integrally formed with a side plate portion and an inclined plate portion that elastically abuts against the side plate portion in a state of being inclined. Then, when the electric wire is inserted through the electric wire insertion hole formed in the case body, the electric wire is inserted between the side plate portion and the inclined plate portion of the locking terminal to be locked and connected electrically and mechanically. It is supposed to be done. In addition, a button through hole is formed in the case body adjacent to the electric wire insertion hole, and the release button is movably supported in the button through hole. By pushing the release button, the inclined plate portion pressed by the release button is elastically deformed in the direction away from the side plate portion, and the connected electric wire can be pulled out.

However, the structure provided with the release button as described above has a problem that the number of parts increases and it is difficult to reduce the manufacturing cost.

Further, a structure is known in which a release hole is formed in the case body instead of the release button. And
With this configuration, by inserting a jig such as a hard pin into the release hole, the inclined plate portion is pressed by the jig to be separated from the side plate portion, and the connected electric wire can be pulled out. .

However, in the structure in which the release hole for inserting the jig is provided, it is necessary to prepare a dedicated jig for inserting into the release hole, and it is difficult to improve workability. In this respect, for example, when an electric wire or a soft pin is inserted into the release hole, there is a problem that the pin may be locked to the locking terminal together with the electric wire.

[0006]

As described above, the structure provided with the release button for disconnecting the electric wire has a problem that the number of parts increases and it is difficult to reduce the manufacturing cost. Also, with the configuration in which the jig is inserted into the release hole, it is difficult to improve workability because a dedicated jig is required.
If an electric wire, a pin, or the like is carelessly inserted into the release hole, the pin is locked with the electric wire.

The present invention has been made in view of the above points, and an object of the present invention is to provide a terminal device which can reduce the manufacturing cost and can disconnect the electric wire with good workability.

[0008]

A terminal device according to claim 1 includes a side plate portion and an inclined plate portion inclined toward the side plate portion, and an electric wire is provided between the side plate portion and the tip end portion of the inclined plate portion. And a lock terminal provided with a lock connecting portion for connecting the lock terminal, a wire insertion hole that accommodates the lock terminal and faces the lock connecting portion, and the inclined plate portion adjacent to the wire insertion hole. A guide body that faces the release hole and is substantially flush with the inclined plate portion when the electric wire is locked. Is provided.

In this structure, when the electric wire is inserted through the electric wire insertion hole, the electric wire is sandwiched between the side plate portion and the tip end portion of the inclined plate portion to be locked and connected. on the other hand,
When a pin-shaped release member is inserted into the release hole, the release member pushes the inclined plate portion to separate it from the side plate portion, and disconnects the electric wire. At this time, the release member
The guide surface is guided in parallel to the inclined plate portion and pushes the inclined plate portion while advancing along the inclined plate portion, so that the release member is less likely to be locked to the tip portion of the inclined plate portion, and the release member is released. It becomes difficult for the member to be locked to the lock connecting portion. For this reason, a soft member such as an electric wire can be used as the release member, a dedicated jig is not required, and workability is improved. In addition, parts such as a release button are not required, and the manufacturing cost can be reduced.

A terminal device according to a second aspect of the present invention includes a side plate portion and an inclined plate portion inclined toward the side plate portion, and a chain for locking and connecting an electric wire between the side plate portion and the tip end portion of the inclined plate portion. A locking terminal provided with a lock connection portion, an electric wire insertion hole that accommodates the locking terminal and faces the locking connection portion, and a release hole that is adjacent to the electric wire insertion hole and faces the inclined plate portion. And a case body having
A guide surface portion, which faces the release hole, is inclined at an angle of 5 degrees or more and 45 degrees or less with respect to the axial direction when the electric wire is locked.

In this structure, when the electric wire is inserted from the electric wire insertion hole, the electric wire is sandwiched between the side plate portion and the tip end portion of the inclined plate portion to be locked and connected. on the other hand,
When a pin-shaped release member is inserted into the release hole, the release member pushes the inclined plate portion to separate it from the side plate portion, and disconnects the electric wire. At this time, the release member
The guide surface portion guides the lock-connected electric wire so as to incline within a predetermined range with respect to the axial direction of the electric wire, and facilitates traveling along the inclined plate portion. Therefore, the release member pushes the inclined plate portion while advancing along the inclined plate portion, so that the release member is less likely to be locked at the tip portion of the inclined plate portion, and the release member is locked at the lock connecting portion. It becomes difficult to connect. For this reason, a soft member such as an electric wire can be used as the release member, a dedicated jig is not required, and workability is improved. In addition, parts such as a release button are not required, and the manufacturing cost can be reduced. If the guide surface is inclined at an angle of less than 5 degrees or more than 45 degrees with respect to the axial direction when the electric wire is locked, it becomes difficult to insert the release member along the inclined plate portion, resulting in poor workability. .

A terminal device according to a third aspect is the terminal device according to the first or second aspect, wherein the case body is provided with a partition portion for partitioning the wire insertion hole and the release hole, and the partition portion is provided with a partition portion. A partition surface facing the release hole and parallel to the axial direction of the wire insertion hole is provided. Further, in this configuration, the partition surface facing the release hole prevents the release member from moving toward the release hole side, and disconnects the electric wire smoothly. Moreover, the partition part provided with the partition surface parallel to the axial direction of the wire insertion hole is easily formed by using a mold.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the terminal device of the present invention will be described below with reference to the drawings.

1 to 5, reference numeral 1 denotes a terminal device, which is mounted on a printed circuit board and serves as a terminal block (connector) for wiring in a device. 11 is a case body, and this case body (housing) 11
Has a substantially box-like shape with an opened lower surface, and is integrally molded using a mold with an insulating synthetic resin such as PBT (polybutylene terephthalate). Also, this case body
On the lower portion of 11, a substantially cylindrical locking portion 12 that is engaged with the printed circuit board is projected. And, in this locking portion 12,
The groove 12a is formed along the longitudinal direction,
A large-diameter portion 12b is formed in the vicinity of the tip portion, and is adapted to be press-fitted into and engaged with a circular hole formed in the case body 11. Further, an overhang 13 that is flush with the upper surface of the case body 11 is provided on the upper part of the case body 11 so as to project.

Further, the inside of the case body 11 is divided into a pair of left and right terminal accommodating chambers 15 by a partition wall portion 14 formed in a substantially central portion in the left-right direction. And the case body 11
An electric wire insertion hole 21 and a release hole 22 are formed so as to be adjacent to each other in the front-rear direction so as to face the left and right terminal storage chambers 15 and 15, respectively. Further, each wire insertion hole 21 has a circular hole shape, a lower part communicates with the vicinity of the front end part of the terminal storage chamber 15, and an upper part has a taper-shaped expanded wire guide part 24. At the upper part of the body 11, a cylindrical wire insertion port 25 is provided so as to surround the wire guide portion 24.
As shown in FIG. 1, the wire insertion hole 21 has a diameter dimension into which the core wire W1 of the wire W can be inserted, and the wire insertion port 25 has a diameter dimension into which the covering portion W2 of the wire W can be inserted. are doing.

On the other hand, the release hole 22 has a rectangular cross section, a lower part communicates with the central part of each terminal accommodating chamber 15, one surface inclines toward the upper side and expands, and at the upper part of the case body 11. Surrounding this release hole 22, a rectangular insertion opening 27 for release is provided so as to project. That is, a partition 31 is formed between each wire insertion hole 21 and the release hole 22, and a partition surface 32 formed on the partition 31 and facing the release hole 22, and this partition surface 32. Both sides that are continuous,
While each is parallel to the insertion direction of the electric wire W, a guide surface portion 33 that is inclined so as to widen upward is formed on the surface facing the partition surface 32.

Further, on the rear surface side of the case body 11, concave grooves 36 are formed for the respective terminal accommodating chambers 15, and locking holes 37 communicating with the respective terminal accommodating chambers 15 are formed at the lower ends of the concave grooves 36. Are formed.

Further, a single or a plurality of ridges 38 are formed on both side surfaces of each terminal storage chamber 15 of the case body 11.

The case body 11 formed in this way
The lock terminals 41 are fitted and stored inside the respective terminal storage chambers 15. Each lock terminal (spring terminal) 41 has a tin (S)
The plate material coated in n) is integrally formed by pressing or the like. In addition, each locking terminal 41 has a bottom plate
43, a front side plate part 44 and a rear side plate part 45 as side plate parts raised from both front and rear ends of the bottom plate part 43, and an inclination bent downward from the upper end of the rear side plate part 45 toward the front side. A plate portion 46 and a connecting piece portion 47 extending downward from the lower end portion of the front side plate portion 44 are formed.

A connection engagement portion 47a is formed near the lower end of the connection piece portion 47, and together with the locking portion 12, the case body 11 is formed.
It is designed to project below. The connection engaging portion 47a is adapted to engage with a through hole formed in the printed board and to be electrically connected to a circuit on the printed board by soldering or the like. Further, the front side plate portion 44 and the rear side plate portion 45 of each locking terminal 41 respectively come into contact with the inner surface of the terminal accommodating chamber 15 of the case body 11, and the rear side plate portion 45 has a retaining piece 45a cut and raised. Has been formed. Therefore, when the locking terminal 41 is inserted into the terminal storage chamber 15 of the case body 11 from the lower side, the retaining piece 45a is inserted into the case body 11.
The locking terminal 41 is engaged with the locking hole 37 to prevent the locking terminal 41 from coming off and being fixed.

The inclined plate portion 46 is bent from the upper end of the rear side plate portion 45 so as to be elastically deformable.
The tip end portion 46a is elastically brought into contact with the front side plate portion 44. And these front side plate part 44 and inclined plate part
A contact portion of the tip 46 with the tip portion 46a is a lock connecting portion 48 for connecting the core wire W1 of the electric wire W with a lock.

Then, as shown in FIG.
The inclination angle of the guide surface portion 33 is set so that the upper surface of the inclined plate portion 46 and the guide surface portion 33 of the case body 11 are substantially flush with each other with the core wire W1 of the electric wire W inserted thereinto.

The electric wire W used in this embodiment has a copper core wire W1, and the diameter dimension of the core wire W1 is 0.8 mm.
It is ~ 1.02mm.

Next, the operation of the terminal device 1 will be described.

First, the terminal device 1 is mounted on a printed board. That is, the locking portion 12 of the case body 11 is engaged with the printed circuit board to be temporarily fixed, and the connection piece portion 47 of each locking terminal 41 is mechanically fixed to the circuit by soldering or the like, and Connect electrically.

Then, the coating W2 at the tip is peeled off to remove the core wire.
The electric wire W with the exposed W1 is inserted into the electric wire insertion hole 21 from the electric wire insertion port 25 of the case body 11. Then, the core wire W1 is press-fitted between the front side plate portion 44 and the tip end portion 46a of the inclined plate portion 46, that is, the core wire W1 of the electric wire W is connected to the lock connecting portion 48 by a lock, and the lock is locked. It is electrically and mechanically connected to the terminal 41 and is also connected to the circuit of the printed circuit board through the lock terminal 41.

Further, in the case where the electric wire W connected by the lock is pulled out when the electric wire W is erroneously connected, for example, the electric wire W can be used as a release member, and the electric wire W is released from the release insertion port 27. Insert into hole 22. Then
This electric wire W is slanted by the guide surface portion 33 of the case body 11.
The tilted plate portion 46 is guided while being guided in parallel with the tilted plate portion 46, and pushes the tilted plate portion 46 to separate the tip end portion of the tilted plate portion 46 from the front side plate portion 44. In this state, the lock connection is released and the electric wire W can be pulled out.

According to the present embodiment, when the pin-shaped release member is inserted into the release hole 22 from the release insertion port 27 when the locking connection of the electric wire W is released, the release member is released from the case body 11. Is guided by the guide surface portion 33 in parallel with the inclined plate portion 46, and the inclined plate portion 46 is pushed while advancing along the inclined plate portion 46, and the tip end portion of the inclined plate portion 46 is moved to the front side plate. The electric wire W can be pulled out by separating from the portion 44 and releasing the lock connection of the electric wire W. Therefore, the angle formed between the inserted release member and the inclined plate portion 46 becomes small, and the release member is less likely to be locked to the tip end portion 46a of the inclined plate portion 46, so this release member is locked to the lock connecting portion 48. It can be difficult to connect. Therefore, a dedicated jig or the like is not required as the release member, and a soft member such as the electric wire W that is the same as the electric wire W to be locked and connected can be used, and the workability can be improved.

Further, the case body 11 is provided with a partition 31 for partitioning the wire insertion hole 21 and the release hole 22.
A partition surface 32 facing the release hole 22 and parallel to the axial direction of the wire insertion hole 21 is provided. Therefore, the partition surface 32 prevents the release member from moving toward the wire insertion hole 21 side, and the wire W The lock connection of can be released smoothly. That is, this partition 31
If there is not, if the release member inserted from the release hole 22 moves to the electric wire insertion hole 21 side and moves along the front side plate part 44, the force for moving the inclined plate part 46 becomes small and the electric wire Since the electric wire W is inserted into the lock connecting portion 48 at the same angle as the electric wire W inserted through the insertion hole 21, the release member does not require a hard pin or the like with a small deformation, and the workability is improved. be able to.

Further, the partition portion 31 having the partition surface 32 provided in parallel with the axial direction of the wire insertion hole 21 can be easily formed of resin by using a mold, and the manufacturing cost can be reduced. In this respect, in the configuration in which the partition surface 32 of the partition portion 31 is inclined toward the guide surface portion 33 side, inserting the release member along the partition surface 32 makes it difficult to move the inclined plate portion 46. Further, in the configuration in which the partition surface 32 of the partition portion 31 is inclined in the same direction as the guide surface portion 33, there is a problem that a so-called undercut portion is generated when the mold is vertically pulled out and the manufacturing cost is increased. are doing.

Further, since it is not necessary to provide the terminal device 1 with a member for releasing the lock connection such as a release button, the manufacturing cost can be reduced.

The inclined plate portion 46 of the lock terminal 41 is connected to the electric wire W.
With the insertion of the electric wire W, the electric wire W can be reliably locked and connected with respect to the axial direction of the inserted electric wire W within a range of 10 degrees or more and 40 degrees or less. W can be securely connected with a lock. Then, as a result of the experiment, the guide surface portion 33 of the case body 11 with respect to the inclined plate portion 46 inclined in such a range of 10 degrees or more and 40 degrees or less is
As shown by the angle a in FIG. 1, the release member can be easily inserted along the inclined plate portion 46 by inclining the inserted electric wire W in the range of 5 degrees to 45 degrees with respect to the axial direction. Even when the wire W or the like is used as the release member, the lock connection can be released with good workability. That is, when the inclination angle a is less than 5 degrees or exceeds 45 degrees, it becomes difficult to insert the release member along the inclined plate portion 46, and the work for releasing the lock connection becomes complicated. Further, as a result of the experiment, the lock connection can be released more smoothly by setting the inclination angle a of the guide surface portion 33 within the range of 10 degrees or more and 40 degrees or less.

As a result of the experiment, the angle of the inclined plate portion 46 and the inclination angle a of the guide surface portion 33 are set to be the same with respect to the axial direction of the inserted electric wire W so that they are flush with each other. By making them flush with each other, the electric wire W inserted in the electric wire insertion hole 21 can be securely locked and connected, and by inserting a release member such as the electric wire W into the release hole 22, the electric wire inserted in the electric wire insertion hole 21 can be obtained. It was found that the lock connection of W can be released and easily pulled out.

Further, in the above-mentioned embodiment, the configuration in which the two locking terminals 41 are provided in one terminal device 1 has been described, but for example, one locking device is provided in one terminal device 1. Terminal
41 may be provided, or a plurality of locking terminals 41 such as 4 or 8 may be provided in one terminal device 1.

Further, the present invention is not limited to the one mounted on a printed circuit board, but can be applied to, for example, a terminal device of a general wiring device mounted on a mounting bracket or the like.

[0036]

According to the terminal device of the first aspect of the present invention, since the guide hole which faces the release hole and is substantially flush with the inclined plate when connecting the lock of the electric wire is provided, the pin-shaped release hole is formed. When the release member is inserted and the electric wire is disconnected, the release member is guided in parallel with the inclined plate portion by the guide surface portion and pushes the inclined plate portion while advancing along the inclined plate portion. Since the release member and the inclined plate portion are separated from each other, the angle formed by the release member and the inclined plate portion becomes smaller, and the release member is less likely to be locked to the tip portion of the inclined plate portion, and the release member is locked to the lock connecting portion. It is possible to make it hard to be affected.
Therefore, a dedicated jig or the like is not required as the release member, and a soft member such as an electric wire can be used, and workability can be improved. In addition, parts such as a release button are unnecessary, and the manufacturing cost can be reduced.

According to the terminal device of the second aspect of the present invention, the guide is provided in the case body so as to face the release hole and be inclined at an angle of 5 degrees or more and 45 degrees or less with respect to the axial direction when the electric wire is locked. Since the surface portion is provided, when the pin-shaped release member is inserted into the release hole to disconnect the electric wire, the release member is
The guide surface portion facilitates insertion along the inclined plate portion, and the inclined plate portion can be pushed and separated from the side plate portion while advancing along the inclined plate portion. Therefore, the angle formed by the release member and the inclined plate portion becomes smaller, the release member is less likely to be locked to the tip end portion of the inclined plate portion, and the release member can be less likely to be locked to the lock connecting portion. . Therefore, a dedicated jig or the like is not required as a release member, and a soft member such as an electric wire can be used,
Workability can be improved. In addition, parts such as a release button are unnecessary, and the manufacturing cost can be reduced.

According to the terminal device of the third aspect, in addition to the effect of the first or second aspect, the case body is provided with a partition for partitioning the wire insertion hole and the release hole, and the partition is Since the partition surface facing the release hole and parallel to the axial direction of the wire insertion hole is provided, the partition surface facing the release hole prevents the release member from moving to the wire insertion hole side and locks the wire. Can be released smoothly. Further, the partition part provided with the partition surface parallel to the axial direction of the wire insertion hole can be easily formed by using a mold, and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an operation showing an embodiment of a terminal device of the present invention.

FIG. 2 is a sectional view of the above terminal device.

FIG. 3 is a perspective view of the above terminal device.

FIG. 4 is a plan view of a case body of the above terminal device.

FIG. 5 is a bottom view of the case body of the above terminal device.

[Explanation of symbols]

 1 Terminal device 11 Case body 21 Wire insertion hole 22 Release hole 31 Partition 32 Partition surface 33 Guide surface 41 Lock terminal 44 Front side plate as side plate 46 Sloping plate 48 Lock connection W wire

Claims (3)

[Claims] 1. A chain comprising a side plate part and an inclined plate part inclined toward the side plate part, and a chain provided with a locking connection part for connecting an electric wire with a lock between the side plate part and the tip part of the inclined plate part. A lock terminal, and a case body that accommodates the lock terminal and has a wire insertion hole facing the lock connection portion and a release hole adjacent to the wire insertion hole and facing the inclined plate portion. A terminal device is provided, wherein the case body is provided with a guide surface portion facing the release hole and being substantially flush with the inclined plate portion when the electric wire is locked and connected. 2. A chain comprising a side plate part and an inclined plate part inclined toward the side plate part, and a chain provided with a locking connection part for locking the electric wire between the side plate part and the tip part of the inclined plate part. A lock terminal, and a case body that accommodates the lock terminal and has a wire insertion hole facing the lock connection portion and a release hole adjacent to the wire insertion hole and facing the inclined plate portion. The case body is provided with a guide surface portion facing the release hole and inclined at an angle of 5 degrees or more and 45 degrees or less with respect to an axial direction when the electric wire is locked and connected. And terminal device. 3. The case body is provided with a partition portion for partitioning the wire insertion hole and the release hole, and the partition portion faces the release hole and is parallel to the axial direction of the wire insertion hole. The terminal device according to claim 1, wherein the terminal device is provided.