JPH0430788Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cover open state holding structure of a covered terminal block.

[Prior Art] As a conventional terminal block with a cover, there is one described in, for example, Japanese Utility Model Application Publication No. 110980/1983.

In this terminal block with a cover, the cover is obtained by resin molding, and a rotating shaft is provided protruding from both ends of the elongated rectangular plate-shaped cover body, and the hinge side is provided with a rotating shaft extending in the longitudinal direction of the cover body. A plurality of locking protrusions (fitting protrusions) are protrudingly provided on the upper surface of the intermediate portion.

Then, the cover is attached to the terminal block by pivoting the rotating shaft to the terminal block side and is attached to the terminal block by hinge connection so that it can be opened and closed freely. It is elastically fitted into the positioning recess (positioning recess) to position and maintain the open state of the cover.

[Problems to be solved by the invention] However, in the conventional terminal block with a cover, when the engaging protrusion of the cover engages with the positioning recess of the terminal block during the cover opening operation, the engagement is interrupted. The engagement protrusion of the cover interferes with the engagement part of the terminal block until just before completion, and the interference force acts on the cover, but the engagement protrusion of the cover has an elastic structure that absorbs the interference force. As a result, the engaging protrusion itself is deformed, or the positioning recess of the terminal block is deformed, causing problems such as the inability to maintain positioning.
Even if the engaging protrusion on the cover and the positioning recess on the terminal block are not deformed or damaged, force is applied to the rotating shaft that holds the cover, causing the rotating shaft to deform and become unable to hold the position or rotate. There is a durability problem in that the shaft breaks and the cover itself cannot be held.

In addition, when fitting the rotation shaft of the cover into the bearing on the terminal block side and attaching and assembling the cover, the protruding length of the rotation shaft must be bent in the longitudinal direction, but the cover is thick and short. There is also an assembly problem in that the case does not easily warp, making it difficult to assemble the cover.

Furthermore, in this conventional covered terminal block, the positioning recess when the cover is opened must be provided in a space other than the space where the terminals are arranged, which increases the width of the entire terminal block. There are limits to how small a terminal block can be made.

The present invention was developed in view of the above-mentioned problems. When opening and closing the cover, the cover can be opened and closed smoothly without putting any force on the cover or the terminal block, and the click function in the open position is improved. A terminal block with a cover that aims to obtain a small terminal block with a cover that can hold the cover properly, has durability in opening and closing the cover, is easy to incorporate the cover into the terminal block, and minimizes unnecessary space. This provides a structure for holding the cover in an open state.

[Means for Solving the Problem] In order to achieve the above object, the cover open state holding structure of the terminal block with cover of the present invention is as follows:
A terminal block with a cover open state holding structure of a terminal block with a cover, in which rotating shafts 19, 19 provided at both ends of the terminal block are hinged to both side walls 4, 4 of a terminal block 1 so as to be freely openable and closable. a cover main body 11 forming a cover 10 with an upper side as a hinge side side 13 and a lower side as a free side side 14, which covers the terminal arrangement portion 3 of the cover body 11; c) Two slits 15, 16 are cut out from both ends of the hinge side 13 adjacent to the two rotation shafts 19, 19 toward the free side. d first small piece parts 17, 17 having elasticity and second small piece parts 18, 18 having elasticity; a locking part 6 for locking the small piece parts 18, 18; e a lock protruding from each flat tip of the second small piece part 18, 18 for locking with the locking part 6; It is characterized by comprising a protrusion 20.

[Function] In the cover open state holding structure of the terminal block with cover of the present invention having the above configuration, (a) During the cover opening operation, the locking protrusion of the cover interferes with the locking part of the terminal block while elastically changing. When the engagement is completed, the cover returns to its original position with some interference and is held in the open position.

As a result, when the cover is opened, no force is applied to the interfering parts such as the locking protrusion of the cover, the rotation shaft, and the locking part of the terminal block, and the cover can have sufficient durability.

(b) The outer slits near both ends of the cover give elasticity to the rotating shaft, and due to the pivoting of the cover and rotating shaft, the cover is thick and small on the terminal block, making it difficult to warp. It is also easy to attach the shaft, improving assembly work efficiency.

(c) The locking part when the cover is opened is provided with a space consisting of the front back wall of the terminal block and a series of vertical walls only on both outsides of the terminal installation part, making the series of terminal blocks in the width direction smaller. can do.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

In the figure, 1 is a terminal block and 10 is a cover.

The terminal block 1 is made of molded resin and has a terminal arrangement part 3 in which a plurality of terminals are arranged in parallel on the upper surface of an insulating base 2, and shaft holes forming a hinge mechanism for attaching a cover to side walls 4 on both sides. Bearings 5, 5 are provided,
Locking parts 6, 6 forming a positioning mechanism for the cover in the open state are provided on the front back part. The locking portions 6, 6 in this case are in the form of a series of vertical walls erected on the front and rear portions of the terminal block 1.

Further, the cover 10 is made of, for example, a thermoplastic resin material, and the cover body 11 has an elongated rectangular shape. This cover body 11 has a terminal block 1
A plate arrangement section 12 is provided on which plates with numbers etc. attached to identify the plurality of terminals on the cover body 11 are mounted. By forming two slits 15, 16 in parallel toward the free side 14, the first small piece parts 17, 17 and the second small piece part 1 are arranged inside and outside and have elasticity.
8 and 18 are provided. And the first small piece part 17,
The bearings 5, 5 are provided on the side edges of the bearings 5, 5,
a rotation shaft 19 that constitutes a hinge mechanism in combination with
19, and locking protrusions 20, 20 are provided at the tips of the second small pieces 18, 18, which in combination with the locking portions 6, 6 constitute a positioning mechanism in the open state of the cover.

Therefore, in order to hingely connect the cover 10 to the terminal block, the first small pieces 17 at both ends of the cover 10,
17 are elastically deformed toward the cover body 1 side, and the rotating shafts 19, 19 are fitted into the bearings 5, 5. Numerals 21 and 21 are protrusions provided on the free side 14 of the cover 10, and are fitted into receiving holes 7, 7 provided on the side walls 4, 4 on the terminal block 1 side to lock the free side 14 of the cover 10. do.

In the case of the embodiment, the bearings 5, 5 are simply made by simply drilling holes in the side walls 4, 4 of the insulating base 2, but the bearings are constructed from separate members and attached to the insulating base 2. It can be changed as appropriate, such as by attaching it to In addition, the shape of the locking protrusions 20, 20 on the cover 10 side, the locking portion 6 on the terminal block 1 side to be combined with the locking protrusions 20, 20,
The shape and structure of the cover 6 can also be changed as appropriate in relation to the opening and fixing angle of the cover 10.

[Effects of the invention] As is clear from the above explanation, the cover open state holding structure of the covered terminal block of the present invention has the following effects.
By making the locking protrusion elastic with the slit provided in the cover body, it softens and absorbs the interference that is applied to the cover's locking protrusion, rotation shaft, and locking part of the terminal block when the cover is opened. Therefore, sufficient cover opening/closing durability can be obtained without damaging each interference part.

Further, the rotation shaft provided on the cover body also has an elastic structure, and can be easily incorporated into the terminal block.

Furthermore, it is possible to downsize the terminal block with a cover by reducing the series of terminal blocks in the width direction.

Furthermore, it is an effective idea as it has excellent durability in holding the cover open and closed, has good workability in assembling the cover, and can reduce costs due to miniaturization.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a terminal block with a cover having a cover open state holding structure according to an embodiment of the present invention, and FIG.
3 is a plan view of a cover according to an embodiment of the present invention, FIG. 4 is a partially enlarged side view, FIG. 5 is an enlarged sectional view taken along the line A-A in FIG. 3, and FIG.
The figure is a partially enlarged sectional view of the terminal block and cover combined. DESCRIPTION OF SYMBOLS 1... Terminal block, 3... Terminal placement part, 6... Locking part, 10... Cover, 11... Cover body, 13
...Hinge side, 14...Free side, 15, 16
...Slit, 17,17...First small piece part, 1
8, 18... Second small piece portion, 19, 19... Rotating shaft, 20, 20... Locking protrusion.

Claims (1)

[Claims for Utility Model Registration] The cover 10 covering the terminal arrangement portion 3 of the terminal block 1,
A terminal block with a cover open state holding structure of a terminal block with a cover, in which rotating shafts 19, 19 provided at both ends of the terminal block are hinged to both side walls 4, 4 of a terminal block 1 so as to be freely openable and closable. a cover main body 11 forming a cover 10 with an upper side as a hinge side side 13 and a lower side as a free side side 14, which covers the terminal arrangement portion 3 of the cover body 11; c) Two slits 15, 16 are cut out from both ends of the hinge side 13 adjacent to the two rotation shafts 19, 19 toward the free side. d first small piece parts 17, 17 having elasticity and second small piece parts 18, 18 having elasticity; a locking part 6 for locking the small piece parts 18, 18; e a lock protruding from each flat tip of the second small piece part 18, 18 for locking with the locking part 6; A cover open state holding structure of a terminal block with a cover, comprising a protrusion 20 and the following.