JPH0617304U - Rail mounting mechanism for distribution board - Google Patents

Abstract

(57) [Abstract] [Purpose] A reinforcing member with a simple structure is fixed to the middle part of the rail, and the rail is firmly fixed to increase its rigidity. Prevent damage. [Structure] The rail mounting bracket 2 is welded to a predetermined position in the box body, and a bolt 3 is inserted into the rail mounting bracket 2 from the head insertion hole 2b and slid sideways so that the head of the bolt 3 heads. It is locked in the part locking hole 2c. Then, the bolt 3 is inserted into the bolt insertion hole 5b of the reinforcing plate 5 and tightened and fixed by the nut 4. Then, the rail 1 is placed right above the support plate 5f, the locking piece 5c at one end of the reinforcing plate 5 is locked to the rail mounting metal fitting 2, and the notch 1c provided on the side plate of the rail 1 and the support plate. 5f is locked, and the end portion of the reinforcing plate 5 is attached to the reinforcing plate fixing metal fitting mounting surface 5e through which the reinforcing plate fixing metal fitting 6 is attached.
The fixing holes 6a are aligned with each other, and the screws 8 are inserted into these fixing holes, and fixed by tightening.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a rail mounting mechanism of a distribution board.

[0002]

[Prior art]

 Conventionally, there are various types of rail mounting mechanisms for a distribution board, and the most common type is one in which both ends of the rail are simply bolted to a box. However, if the vertical dimension of the box becomes longer than 1200 mm, the rail length also becomes longer, and the strength of the central part is insufficient only by fixing both ends, and if some shock is applied to the distribution board, the rail will vibrate. Occurrences could occur and the internal electrical equipment could be adversely affected, such as the breaker handle attached to the rail via the equipment mounting plate being damaged. Therefore, reinforcement is performed by using a rail mounting metal fitting in the middle portion of the rail, or the reinforcing frame body 10 shown in FIG. 5 is mounted inside the middle portion of the rail 1 and screwed to the rail 1. Was there.

In Japanese Utility Model Laid-Open No. 64-50611, a bolt insertion hole for bolting a frame to a box, a mounting piece on which both lower ends of the frame are mounted, and a mounting piece located outside the frame. An intermediate fixing plate consisting of a fixing piece and having a predetermined length in the longitudinal direction of the frame is bolted to the box through the insertion hole, and a fixing tool is provided on the fixing piece of this intermediate fixing plate, and the mounting plate is It has been disclosed that it is screwed to the frame via a fixture.

[0004]

[Problems to be solved by the device]

 In the conventional rail mounting mechanism for the above distribution board, the vertical dimension of the box is reinforced by using the rail mounting bracket in the middle of the rail. This is not practical because the bolts on the mounting plate may overlap, which limits the mounting of the device mounting plate. Further, as shown in FIG. 4, the reinforcement frame 20 mounted inside the middle portion of the rail 1 and screwed to the rail 1 is effective for preventing the rail 1 from falling, but the reinforcement frame 20 Since it is not fixed to the box, the reinforcement is insufficient and vibration is likely to occur in the rail 1, and it is vulnerable to external impact, which may damage internal electrical equipment such as breakers and doors.

In the one disclosed in Japanese Utility Model Laid-Open No. 64-50611, an intermediate fixing plate having a predetermined length in the longitudinal direction of the frame is bolted to a box, and the intermediate fixing plate is provided with a frame and a mounting plate. The intermediate fixing plate is attached to the middle part of the frame by screwing with the fixing tool, but the frame is not fixed directly to the intermediate fixing plate bolted to the box, but it is fixed via the fixing tool. Since the frame is mounted on the mounting piece of the intermediate fixing plate and is located at a position away from the box surface, there is a problem in terms of vibration resistance, and the number of parts is large and the frame is fixed. It had a drawback that the work of aligning the tool, the frame and the mounting plate and screwing them was troublesome.

[0006]

[Means for Solving the Problems]

 In view of the problems of the above-mentioned conventional rail mounting mechanism of the distribution board, the present invention secures a reinforcing member having a simple structure to the middle portion of the rail, firmly fixes the rail to increase its rigidity, and This is to prevent the occurrence and damage to the attached equipment.The structure is such that the rail mounting metal fittings protruding from the central part inside the box body are attached to the bottom surface where both ends are fixed via bolts and nuts. It consists of a cylindrical rail with openings at both ends, and at least one rail reinforcement member that is fixed to an appropriate intermediate position of the rail.The rail has bolt insertion holes at both ends and a device mounting plate at an appropriate position on the surface. Each of the mounting holes and a side wall thereof is provided with a notch to be locked by the rail reinforcing member. The rail reinforcing member includes the rail mounting member, the bolt, the nut, the reinforcing plate, and the reinforcing plate fixing metal member, and the reinforcing plate is a substrate. And at least one locking piece whose end is locked to the rail mounting bracket, and a reinforcing plate mounting bracket mounting surface having a stop hole for mounting the reinforcing plate fixing bracket at the end. It is composed of a reinforcing plate fixing bracket having a stop hole, and a support plate for supporting the rail directly below the rail, and the stop hole of the reinforcement plate and the stop hole of the reinforcement plate in a state where the rail reinforcement member is locked to the rail. This means that the fastening holes of the reinforcing plate fixing bracket were aligned and tightened.

Further, the shape of the stop hole of the reinforcing plate fixing bracket is a long hole extending in the direction perpendicular to the rail.

[0008]

[Action]

 Since the reinforcing plate is tightened and fixed to the rail mounting bracket that is fixed to the box body by bolts and nuts, and the rail is placed on this and tightened with screws, the rail is firmly fixed and its rigidity is increased to improve shock resistance and vibration resistance. This will prevent damage to internal electrical equipment and doors.

[0009]

【Example】

 The configuration of the rail mounting mechanism of the distribution board according to the present invention will be described based on the first embodiment.

In FIGS. 1 and 2, reference numeral 1 denotes a cylindrical rail having a lower surface and openings at both ends, which are provided in a pair in a box body (not shown) so as to face each other. Each rail 1 has bolt insertion holes 1a at both ends thereof, mounting holes 1b for mounting a plurality of device mounting plates (not shown) on the surface at regular intervals, and notches formed on its side plates by rail reinforcing members 7. 1c are provided respectively, and notches 1d are provided on both end side plates so as to be locked by rail fittings 2 to be described later.

Reference numeral 2 denotes a rail mounting member provided in a box body (not shown) and having a protruding portion 2a having a U-shaped cross section formed in the central portion thereof. A bolt is attached to the surface of the protruding portion 2a. It has a head insertion hole 2b and a head engaging hole 2c adjacent to the head insertion hole 2b, and is formed so that it can be inserted into the cutout portion 1d of the rail 1 and can be attached to both end openings of the rail 1.

Reference numeral 7 is a rail reinforcing member including a rail mounting member 2, a bolt 3, a nut 4, a reinforcing plate 5, and a reinforcing plate fixing metal member 6, and the reinforcing plate 5 is a substrate 5 a, Reinforcement plate fixing with a bolt insertion hole 5b in its approximate center, a locking piece 5c whose end is locked to the rail mounting bracket 2, and a stop hole 5d for attaching a reinforcing plate fixing bracket to the end It is provided with a metal fitting mounting surface 5e and a support plate 5f which supports the rail 1 directly below the rail 1.

Therefore, in order to reinforce the rail 1 with the rail reinforcing member 7, the rail mounting member 2 is welded to a predetermined position of the main body of the box (not shown), and the bolt 3 is attached to the rail mounting member 2. The head of the bolt 3 is locked in the head locking hole 2c by inserting it from the head insertion hole 2b and sliding it sideways. Then, the bolt 3 is inserted into the bolt insertion hole 5b of the reinforcing plate 5 and tightened and fixed by the nut 4. Then, the rail 1 is placed right above the support plate 5f, the locking piece 5c at one end of the reinforcing plate 5 is locked to the rail mounting metal fitting 2, and the notch 1c provided on the side plate of the rail 1 and the support plate. 5f is locked, and the end of the reinforcing plate 5 is aligned with the fixing hole 5d of the reinforcing plate fixing metal fitting mounting surface 5e for mounting the reinforcing plate fixing metal fitting 6 and the fixing hole 6a of the reinforcing plate fixing metal fitting 6. Insert the screw 8 into the stop hole of and fix it by tightening.

Next, a second embodiment of the present invention will be described.

3 to 4, in order to reinforce the rail 1 with the rail reinforcing member 7, the rail mounting metal fitting 2 is welded to a predetermined position of the box main body (not shown), and the rail mounting metal fitting 2 is attached to the rail mounting metal fitting 2. The bolt 3 is inserted from the head insertion hole 2b and slid sideways, and the head of the bolt 3 is locked in the head locking hole 2c. Then, the bolt 3 is inserted into the bolt insertion hole 5b of the reinforcing plate 5 and tightened and fixed by the nut 4. Then, the rail 1 is placed right above the supporting plate 5f, the locking piece 5c at one end of the reinforcing plate 5 is locked to the rail mounting metal fitting 2, and the notch 1c provided on the side plate of the rail 1 and the bearing are supported. The plate 5f is locked, and the end of the reinforcing plate 5 is aligned with the stopper hole 5d of the reinforcing plate fixing metal fitting mounting surface 5e for attaching the reinforcing plate fixing bracket 6 and the fixing hole 6b of the reinforcing plate fixing bracket 6. The screw 7 is inserted through these stop holes and tightened and fixed. The fixing hole 6b of the reinforcing plate fixing bracket 6 is a long hole which is long in the direction perpendicular to the rail. Once the screw 8 is tightened and fixed, the screw 8 is loosened when the rail is removed next time. This can be easily done by sliding the fixing metal fitting 6 toward the outside of the rail.

[0016]

[Effect of device]

 As described above, the rail mounting mechanism of the distribution board according to the present invention has the bottom surface in which both ends are fixed to the rail mounting metal fitting provided in the main body of the box and projecting from the central portion. And a cylindrical rail having openings at both ends, and at least one rail reinforcing member fixed to an appropriate intermediate position of the rail.The rail has bolt insertion holes at both ends and a stopper for the rail reinforcing member at an intermediate portion. The holes, the mounting holes for the device mounting plate at appropriate points on the surface, and the notches that are locked by the rail reinforcing members are provided on the side plates, and the rail mounting bracket is provided on the projecting surface at the center. A head insertion hole for a bolt and a head engagement hole adjacent to the head insertion hole are provided. Further, the rail reinforcing member includes the rail mounting member, a bolt, a nut, and a reinforcing plate. Is a base plate, at least one locking piece whose end is locked to the rail mounting member, and an end which is provided with a stop hole and is locked to a notch formed in a side plate of the rail. A stop plate and a support plate for supporting the rail directly below the rail, and with the rail reinforcement member locked to the rail, the stop hole of the rail reinforcement member and the stop hole of the rail are aligned with each other. By tightening and fixing, the structure is simple, and the work of attaching and detaching the rail reinforcing member is easy and easy, and the rigidity of the entire rail is increased to prevent vibration due to impact and damage to the mounting equipment and box body. It is extremely practical in terms of prevention.

Further, since the shape of the stop hole of the reinforcing plate fixing bracket is a long hole which is long in the direction perpendicular to the rail, the screw 8 is loosened when the rail is removed, and the reinforcing plate fixing bracket 6 is moved to the outer side of the rail. By sliding it, it can be performed very easily, and there is no worry of losing the screw.

[Submission date] February 15, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

[0004]

[Problems to be solved by the device]

 In the conventional rail mounting mechanism for the above distribution board, the vertical dimension of the box is reinforced by using the rail mounting bracket in the middle of the rail. This is not practical because the bolts on the mounting plate may overlap, which limits the mounting of the device mounting plate. Further, as shown in FIG. 5, the reinforcement frame 20 mounted inside the middle portion of the rail 1 and screwed to the rail 1 is effective for preventing the rail 1 from falling, but the reinforcement frame 20 Since it is not fixed to the box, the reinforcement is insufficient and vibration is likely to occur in the rail 1, and it is vulnerable to external impact, which may damage internal electrical equipment such as breakers and doors.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a rail mounting mechanism of a distribution board according to the present invention.

FIG. 2 is a sectional view of a main part of the rail reinforcing member of FIG.

FIG. 3 is an exploded perspective view showing a second embodiment of the rail mounting mechanism of the distribution board according to the present invention.

4 is a cross-sectional view of a main part of the rail reinforcing member of FIG.

FIG. 5 is a perspective view of a conventional reinforcing frame body.

[Explanation of symbols]

1 ... Rail, 1a ... Bolt insertion hole, 1b ... Mounting hole, 1c ... Notch, 1d ... Notch, 2 ...
..Rail mounting brackets, 2a ... protruding portions, 2b ...
・ Head insertion hole, 2c ... Head locking hole, 3 ... Bolt, 4 ... Nut, 5 ... Reinforcing plate, 5a ... Substrate, 5b ... Bolt insertion hole, 5c ... Locking pieces, 5d
・ ・ ・ Stop holes, 5e ・ ・ ・ Reinforcing plate fixing bracket mounting surface,
5f ... Support plate, 6 ... Reinforcing plate fixing bracket, 6a ...
-Stop hole, 6b ... Stop hole, 7 ... Rail reinforcing member, 8 ... Screw.

Claims (2)

[Scope of utility model registration request] 1. A cylindrical rail having a bottom surface and both ends opening, both ends of which are fixed to a rail mounting metal fitting provided in the box main body by projecting a central portion, and an appropriate intermediate position of the rail. And at least one rail reinforcing member fixed to the rail, the rail is bolt insertion holes at both ends, mounting holes for equipment mounting plates at appropriate positions on the surface, and the rails are locked to the side plates by the rail reinforcing members. And a rail mounting member having a head insertion hole for a bolt and a head engagement hole adjacent to the head insertion hole, and the rail reinforcing member is provided with: The rail mounting bracket, the bolt, the nut,
The reinforcing plate includes a reinforcing plate and a reinforcing plate fixing metal fitting, and the reinforcing plate includes a substrate, at least one locking piece whose end is locked to the rail mounting metal fitting, and an end portion of the reinforcing plate fixing metal fitting. The reinforcing plate fixing metal fitting mounting surface having a fixing hole for mounting, the reinforcing plate fixing metal fitting having a fixing hole, and a supporting plate for supporting the rail directly below the rail, the rail reinforcing member A rail mounting mechanism for a distribution board, wherein a fastening hole of the reinforcing plate and a fastening hole of the reinforcing plate fixing metal fitting are tightened and fixed in a state of being locked to the rail. 2. The rail mounting mechanism for a distribution board according to claim 1, wherein the shape of the stop hole of the reinforcing plate fixing bracket is a long hole extending in a direction perpendicular to the rail.