JP5990864B1 - Terminal block device - Google Patents

Abstract

Provided is a terminal block device that prevents loosening of a terminal screw to which a connection terminal provided at an end of a wiring is attached and prevents the connection terminal from being detached from a terminal block body. A terminal block body 1 made of insulating plastic to which a connection terminal 4 at an end of a wiring is attached by a terminal screw 5, wherein a head 6 of the terminal screw 5 has a non-circular shape, and the terminal block body 1 An opening 11a having the same shape as the head 6 of the terminal screw 5 is provided in a restriction plate 11 having a width B substantially the same as the interval between the pair of left and right side walls 3 and 3 protruding from the base 2, and the restriction plate 11 is It is inserted between the side walls 3 and 3 and the opening 11 a is fitted to the head 6 of the terminal screw 5. [Selection] Figure 1

Description

  The present invention relates to a terminal block device for attaching a connection terminal provided at an end of a wiring.

  Conventionally, many devices using washers have been proposed to prevent terminal screws from loosening. Generally, a washer is used as a spring washer, or a protrusion formed by cutting on each of the upper and lower surfaces of the washer is engaged with a screw hole and a screw head to prevent loosening of the screw as in Patent Document 1. There is.

JP 2006-3000299 A

  In particular, in the case of using a spring washer, if the spring property is used to prevent loosening, the spring will sag when used for a long period of time, and the function of preventing loosening by the spring force will not be achieved. In addition, in the case of Patent Document 1, a screw hole or a recess for locking the washer protrusion is provided in the screw head, and this recess needs to be processed, and the assembly is troublesome. there were.

  The present invention has been made in consideration of the above, and it is possible to reliably prevent loosening by a simple structure without special processing of the screw hole of the terminal screw, and to tighten the terminal screw. The purpose is to facilitate assembly work regardless of the completion position.

  In order to solve the above-described problems and achieve the object, the present invention is configured as follows.

The invention according to claim 1 is a terminal block body made of insulating plastic that is attached to a terminal screw having a tool engagement hole by screwing the connection terminal at the end of the wiring onto the upper surface ,
Forming an outer peripheral serration on the outer peripheral surface of the head of the terminal screw and making it non-circular,
Projecting from the base of the terminal block body, Ri name from substantially the same width as the distance between the left and right pair of side walls tip is positioned above said top surface of said terminal screw, bent to provide a V-shaped groove in the middle of the width An opening having an inner peripheral surface formed with an inner peripheral serration that coincides with the outer peripheral serration of the head of the terminal screw is provided in the restriction plate made possible ,
The terminal block device is characterized in that the opening of the restriction plate inserted between the side walls is fitted to the head of the terminal screw .

The invention according to claim 2 is a terminal block body made of insulating plastic that is attached to a terminal screw having a tool engagement hole by screwing the connection terminal at the end of the wiring onto the upper surface,
Forming an outer peripheral serration on the outer peripheral surface of the head of the terminal screw arranged in the longitudinal direction of the terminal block body, and making it non-circular,
The head portion of the terminal screw is protruded from the base of the terminal block main body, and each of the heads of the terminal screw is provided on each of a plurality of restricting plates each having a tip substantially equal in width to a distance between a pair of left and right side walls located above the upper surface of the terminal screw. Providing an opening having an inner peripheral surface formed with an inner peripheral serration that matches the outer peripheral serration, and connecting the plurality of restriction plates to each other by a flexible elastic body having a width larger than the width of the restriction plate, In the terminal block device , the openings of the restriction plates inserted between the side walls and the heads of the plurality of terminal screws are fitted so that an elastic body is pressed against the side walls .

  With the above configuration, the present invention has the following effects.

The invention according to claim 1 is a terminal block body made of insulating plastic that is attached to a terminal screw having a tool engagement hole by screwing the connection terminal at the end of the wiring onto the upper surface,
Forming an outer peripheral serration on the outer peripheral surface of the head of the terminal screw and making it non-circular,
Projecting from the base of the terminal block main body, the tip has a width substantially the same as the distance between the pair of left and right side walls located above the upper surface of the terminal screw, and can be bent by providing a V-groove in the center of the width. An opening having an inner peripheral surface formed with an inner peripheral serration that matches the outer peripheral serration of the head of the terminal screw is provided in the restriction plate;
Since the opening of the restricting plate inserted between the side walls fits with the head of the terminal screw, the terminal is mounted in the side wall having a tip higher than the terminal screw for protecting the connection terminal. Providing a projection or the like that prevents the screw from moving upwards on the inner surface of the side wall by securely preventing the screw from loosening due to vibration or the like and bending the restriction plate along the V-groove. However, the opening of the restriction plate can be easily fitted to the terminal screw at a position lower than the tip of the side wall while avoiding this protrusion. Further, the terminal screw mounted in the side wall having a tip higher than the terminal screw for protection of the connection terminal can be tightened by a screwdriver engagement hole on the upper surface of the head, Even if the outer peripheral serration is directly formed on the outer peripheral surface, the inner peripheral serration of the restriction plate inserted between the side walls is not affected by the terminal screw tightening completion position. It is possible to fit the serration, and the assembly of the restriction plate between the side walls becomes easy.

The invention according to claim 2 is a terminal block body made of insulating plastic that is attached to a terminal screw having a tool engagement hole by screwing the connection terminal at the end of the wiring onto the upper surface,
Forming an outer peripheral serration on the outer peripheral surface of the head of the terminal screw arranged in the longitudinal direction of the terminal block body, and making it non-circular,
The head portion of the terminal screw is protruded from the base of the terminal block main body, and each of the heads of the terminal screw is provided on each of a plurality of restricting plates each having a tip substantially equal in width to a distance between a pair of left and right side walls located above the upper surface of the terminal screw. Providing an opening having an inner peripheral surface formed with an inner peripheral serration that matches the outer peripheral serration, and connecting the plurality of restriction plates to each other by a flexible elastic body having a width larger than the width of the restriction plate, Since the opening of each of the restriction plates inserted between the side walls and the heads of the plurality of terminal screws are fitted so that the elastic body is pressed against the side walls, the tip of the terminal screw is positioned above the upper surface. The terminal screw mounted in the raised side wall is surely prevented from loosening due to vibration, etc., the gap of the distance between the terminal screws can be absorbed, and the opening can be fitted to the head of the terminal screw. It becomes easy. In addition, the restriction plate inserted between the side walls is prevented from moving upward so that the elastic body is in pressure contact with the side walls, and the openings of the restriction plates and the heads of the plurality of terminal screws are provided. The opening of the restriction plate that fits into the terminal screw is difficult to come out from the head of the terminal screw, and only the terminal screw can be modified without changing the shape of the terminal block main body, and the cost to prevent loosening Can be reduced.

Sectional drawing which shows the 1st embodiment of the terminal block main body of this invention. The top view of the terminal block main body in FIG. The perspective view which shows the 1st embodiment of the control board of this invention. The control board of this invention is shown, (a) is sectional drawing by the AA line of FIG. 3, (b) is sectional drawing by the BB line of FIG. Sectional drawing which shows the 2nd embodiment of the terminal block main body of this invention. The top view of the terminal block main body in FIG. Sectional drawing which shows the 3rd embodiment of the terminal block main body of this invention. The top view of the terminal block main body in FIG. The perspective view which shows the 3rd embodiment of the control board of this invention.

  Embodiments of the terminal block device of the present invention will be described below. The embodiment of the present invention shows the most preferable mode of the present invention, and the present invention is not limited to this.

  A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows an example in which a terminal block device is implemented, and what is denoted by reference numeral 1 is a terminal block main body.

  The terminal block body 1 is made of insulating plastic and includes a base 2 and a pair of left and right side walls 3 and 3 erected from the base 2, and the connection terminal 4 at the end of the wiring is connected by the terminal screw 5. It is attached to the base 2. An outer peripheral serration 6c is formed on the outer peripheral surface of the head 6 of the terminal screw 5 to make the head 6 non-circular.

  The upper surface 6a of the head 6 of the terminal screw 5 is formed with a cross-shaped screwdriver hole 6d. The seat 6b of the head 6 is formed on the base 2 of the terminal block body 1. It has the screw part 7 to be screwed. The screw driver hole 6d may be formed in a single letter, square or hexagon.

  The connection terminal 4 is pressed and sandwiched between the floor plate 8 on the base 2 and the push plate 9 below the seat surface 6b by screwing the screw portion 7 together. For this reason, when the screw portion 7 is rotated by vibration or the like and the terminal screw 5 is loosened, the connection terminal 4 is detached from the base 2. Reference numeral 10 denotes a washer interposed on the lower surface of the seat surface 6b.

  A restriction plate 11 made of plastic or sheet metal having a width B substantially the same as the interval between the side walls 3 and 3 is inserted between the side walls 3 and 3. The restriction plate 11 is provided with an opening 11a having the same shape as the head 6 and an inner peripheral serration 11b that coincides with the outer peripheral serration 6c of the outer peripheral surface of the head 6 is formed on the inner peripheral surface of the opening 11a. The opening 11 a is fitted into the head 6.

  Even if the screw portion 7 starts to rotate by inserting the restriction plate 11 between the side walls 3 and 3 and fitting the opening 11a to the head portion 6 of the terminal screw 5, the end surface of the restriction plate 11 remains. Abutting against the side walls 3 and 3, the screw portion 7 is prevented from rotating and the terminal screw 5 is prevented from loosening.

  A lower corner of the outer peripheral surface 6a of the head 6 of the terminal screw 5 is cut to form a recess 6e, and a protrusion provided on the lower side of the inner peripheral surface of the opening 11a of the restriction plate 11 in the recess 6e. The edge 11 c is engaged to prevent the opening 11 a from coming out of the head 6 of the terminal screw 5.

  A V-groove 11d is provided in the center of the width B on the back surface of the restriction plate 11, the restriction plate 11 is bent with the V-groove 11d as a fold, and the restriction plate 11 is inserted between the side walls 3 and 3, The opening 11 a is fitted into the head 6. A V-groove similar to the V-groove 11d may be provided in a direction perpendicular to the V-groove 11d so that the opening 11a can be easily fitted to the head 6.

  The terminal screw 5 is tightened by a screwdriver (not shown) engaged with a cross-shaped screwdriver hole 6d formed on the upper surface 6a of the head 6 of the terminal screw 5. Attach the connection terminal 4 to the above.

  Since the outer peripheral surface of the terminal screw 5 is the outer peripheral serration 6c, the restriction plate 11 is inserted between the side walls 3 and 3 regardless of the tightening completion position of the terminal screw 4, and the outer peripheral surface of the head 6 is The inner peripheral serration 11b of the restricting plate 11 can be fitted into the outer peripheral serration 6c, the assembly between the side walls 3 and 3 is easy, and the loosening of the terminal screw 5 can be reliably prevented.

  Next, a second embodiment will be described based on FIG. 5 and FIG. In this embodiment, the same components as those in the first embodiment will be described with the same reference numerals.

  In the second embodiment, the protrusions 3a and 3a that prevent the opening 11a of the restriction plate 11 from coming out of the head 6 on the inner surfaces of the side walls 3 and 3 described in the first embodiment. Is provided.

  When the restriction plate 11 is inserted between the side walls 3 and 3, the restriction plate 11 is deformed so as to be bent and the protrusions 3 a and 3 a are overcome, and the opening 11 a is fitted into the head 6 of the terminal screw 5. Combine. For this reason, the protrusion height of the protrusion 3a is lowered, and the plate thickness of the restriction plate 11 is reduced to facilitate bending deformation.

  Further, without providing the protrusions 3a and 3a, the opening 11a is press-fitted into the outer peripheral surface of the head 6 of the terminal screw 5 so that the opening 11a does not come out of the head 6. Good.

  Further, a third embodiment will be described with reference to FIGS. In this embodiment, the same components as those in the first embodiment will be described with the same reference numerals.

  In the third embodiment, a pair of the terminal screws 5 and 5 are arranged in the longitudinal direction of the terminal block body 1 described in the first embodiment, and the heads of the terminal screws 5 and 5 are arranged. Outer peripheral serrations 6c and 6c are formed on the outer peripheral surfaces of 6 and 6 to make the heads 6 and 6 non-circular. The outer peripheral serrations 6c and 6c may be formed at several places on the circumference.

  Each of the head plates 6 and 6 is fitted with each of the regulation plates 11 and 11 made of sheet metal having openings 11a and 11a having the same shape, and one end of the regulation plates 11 and 11 is flexible and elastic. Connected by the body 12. Thereby, the gap | interval of the space | interval dimension of the said terminal screws 5 and 5 can be absorbed, and it becomes easy to fit the said openings 11a and 11a to the said heads 6 and 6 of the said terminal screws 5 and 5. FIG. The restriction plates 11 and 11 and the elastic member 12 are connected by integral molding or adhesion.

  Further, when the restricting plates 11, 11 are inserted between the side walls 3, 3, if the width W of the elastic body 12 is slightly larger than the width B of the restricting plate 11, the elastic body 12 becomes the side walls 3, 3. 3, and the opening 11 a of the restriction plate 11 can be prevented from coming out of the head 6.

  In the terminal block device having the above configuration, the connection terminal 4 is sandwiched between the floor plate 8 on the base 2 and the pressing plate 9 below the seat surface 6b, and the terminal screw 5 is inserted into the screw driver hole. The connection portion 4 is attached to the base 2 by tightening the terminal screw 5 by screwing the screw portion 7 of the terminal screw 5 with a screwdriver engaged with 6d.

  When the tightening of the terminal screw is completed, the restriction plate 11 is inserted between the side walls 3 and 3 at this completion position, and the opening 11 a of the restriction plate 11 is fitted to the head 6 of the terminal screw 5. . At this time, the opening 11 a of the restriction plate 11 is formed in the head 6 of the terminal screw 5 even if the restriction plate 11 is inserted between the side walls 3 and 3 regardless of the terminal screw tightening completion position. Can be mated.

  Even if the vibration of the equipment including the terminal block device is transmitted to the terminal block main body 1 and the terminal screw 5 to which the connection terminal 4 is attached is generated, the regulating plate that fits the head 6 of the terminal screw 5 The end face 11 is in contact with the side walls 3 and 3 and is prevented from rotating, so that the terminal screw 5 is loosened so that the connection terminal 4 is not detached from the base 2 of the terminal base body 1. In addition, you may make the said head 6 of the said terminal screw 5 into non-circular shape like the tooth profile of a gearwheel.

  The present invention is a terminal block device that reliably prevents a terminal screw for attaching a connection terminal provided at an end of a wiring from loosening due to vibration and the like so that the connection terminal does not come off from the terminal block main body.

DESCRIPTION OF SYMBOLS 1 Terminal block main body 2 Base 3 Side wall 3a Protrusion 4 Connection terminal 5 Terminal screw 6 Head 6a Top surface 6b Seat surface 6c Outer peripheral serration 6d Screwdriver hole 6e Depression 7 Screw part 8 Laying plate 9 Push plate 10 Washer 11 Restriction plate 11a Opening 11b Inner peripheral serration 11c Protruding edge 11d V groove 12 Elastic body B Width of regulating plate W Width of elastic body

Claims (2)

A terminal block body made of insulating plastic that is screwed onto the upper surface of the connection terminal at the end of the wiring and attached with a terminal screw having a tool engagement hole ,
Forming an outer peripheral serration on the outer peripheral surface of the head of the terminal screw and making it non-circular,
Projecting from the base of the terminal block body, Ri name from substantially the same width as the distance between the left and right pair of side walls tip is positioned above said top surface of said terminal screw, bent to provide a V-shaped groove in the middle of the width An opening having an inner peripheral surface formed with an inner peripheral serration that coincides with the outer peripheral serration of the head of the terminal screw is provided in the restriction plate made possible ,
The terminal block device , wherein the opening of the restriction plate inserted between the side walls is fitted to the head of the terminal screw . A terminal block body made of insulating plastic that is screwed onto the upper surface of the connection terminal at the end of the wiring and attached with a terminal screw having a tool engagement hole,
Forming an outer peripheral serration on the outer peripheral surface of the head of the terminal screw arranged in the longitudinal direction of the terminal block body, and making it non-circular,
The head portion of the terminal screw is protruded from the base of the terminal block main body, and each of the heads of the terminal screw is provided on each of a plurality of restricting plates each having a tip substantially equal in width to a distance between a pair of left and right side walls located above the upper surface of the terminal screw Providing an opening having an inner peripheral surface formed with an inner peripheral serration that matches the outer peripheral serration, and connecting the plurality of restriction plates to each other by a flexible elastic body having a width larger than the width of the restriction plate, The terminal block characterized in that each opening of the restriction plate inserted between the side walls and the heads of the plurality of terminal screws are fitted so that an elastic body is pressed against the side walls. apparatus.

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