JPH0228615Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" A plurality of units are stacked on a base piece of a rail that has a base piece that projects horizontally outward from the upper end of both side walls of a U-shaped cross section that is open at the top. This invention relates to a fixing device for rail attachment parts such as terminal blocks and fuse stands that are fitted and fixed by screws.

``Problems to be solved by conventional techniques and ideas'' Conventionally, the rails of this type of fixing device were formed of aluminum profiles, and were weak, and the mounting of the rails to the base piece was difficult because the upper and lower push plates were connected to each other. Since the base piece is held in a shifted state, a shearing load is applied to the base piece, and the base piece is easily deformed. Further, the fixing device is inserted perpendicularly to the rail from both sides of the rail, and is tightened and fixed while engaging and pressing the rail, which not only makes it difficult to tighten, but also tends to come off easily, making it impossible to secure the rail sufficiently. Furthermore, even if a plurality of units are fitted and overlapped and fixed by a fixing device, there is a problem that it is difficult to firmly fix the units.

``Means for Solving the Problems'' The present invention involves fitting a locking member with a U-shaped cross section with an open bottom into a push member with a U-shaped cross section with an open bottom, and inserting a screw from above. It is screwed onto the locking member, and the length of the front upright push plate of the push member is slightly shorter than the length of the rear upright push plate so that the push member flexes in the unit pressing direction. Tapered surfaces for guiding the rail base piece are provided on both sides of the bottom end of the board, and the front and
Support pieces bent outward are provided on both sides of the lower end of the rear upright lock plate so that the base piece can be held between the lower ends of the front and rear upright push plates.

``Function'' The base piece of the rail is held between the lower ends of the front and rear upright push plates of the push member and the support piece of the lock member and installed. Further, when attaching to the rail, the push plate is guided by the tapered surface at the lower end of the push plate to facilitate positioning with respect to the rail. Furthermore, since there is a slight difference in length between the front upright push plate and the rear upright push plate of the push member, the unit is installed at a slight incline under pressure.

"Example" Terminal blocks are shown in FIGS. 1, 2, 3, and 4. That is, a plurality of units 3 are stacked and fitted on the base piece 1 of the rail 2, which has the base piece 1 horizontally protruding outward from the upper end of both side walls of a U-shaped cross section with an open upper part. Provide a fixation device.

The fixing device consists of a pushing member 4, a locking member 5, and a screw 6, as shown in FIGS. 5-13.

The push member 4 is made of sheet metal, has an open bottom, and has a U-shaped cross section by connecting a front upright push plate 7, a connecting plate 8, and a rear upright push plate 9, and has a U-shaped cross section. A pressing piece 10 is formed above the central portion and extending above the connecting plate 8 on the same plane. Lock member 5
is a member that is fitted inside the pushing member 4 and slides thereon, is made of sheet metal, and is similarly open at the bottom;
A front upright lock plate 11, a connecting plate 12, and a rear upright lock plate 13 are arranged in series and formed into a U-shaped cross section. Push the screw 6 fitted with the S washer 14 from above from the member 4
The connecting plate 8 of the lock member 5 is inserted through the connecting plate 8 of the locking member 5, and the connecting plate 12 of the locking member 5 is screwed onto the connecting plate 12 of the lock member 5.

The length of the front upright push plate 7 of the push member 4 is set to the 10th
As shown by Δl in the figure, it is formed to be slightly shorter than the length of the rear upright push plate 9.

Tapered guide surfaces 16 for guiding the base piece 1 of the rail 2 are protrudingly provided on both side surfaces of the lower end of the rear upright push plate 9. In this embodiment, this tapered guide surface is provided on the rear upright push plate 9, but it can also be provided on only the front upright push plate 7 or on both the front and rear upright push plates 7 and 8.

Furthermore, support pieces 15 bent outward are provided to protrude from both sides of the lower ends of the front and rear upright lock plates 11 and 13 so that the base piece 1 can be held between the lower ends of the front and rear upright push plates 7 and 9. .

In the fixing device constructed as described above, the units 3 are stacked and fitted onto the base piece 1 of the rail 2, and the fixing devices are attached to both ends thereof.

As mentioned above, the fixing device includes a locking member 5 slidably provided within the pushing member 4 and screwed onto the locking member 5 by a screw 6. First, the deep engagement grooves 16 of the engagement grooves 16 and 17 formed by the lower ends of the front and rear lock plates 11 and 13 and the support piece 15 are engaged with the base piece 1 of the rail 2, and then the shallow grooves 16 are engaged. Engagement groove 1
7. Next, when the pushing member 4 is dropped, the tapered guide surface 16 at the lower end thereof hits both ends of the base piece 1 of the rail 2, and is guided so that the lower end surface contacts the upper surface of the base piece 1 of the rail 2 for positioning. Subsequently, when the screw 6 is tightened, the lock member 5 is pulled upwardly relative to the push member 4 and is strongly clamped by the lower ends of the front and rear upright push plates 7 and 9 of the push member 4 and the support piece 15 of the lock member 5. Moreover, since there is a difference in length between the front upright push plate and the rear upright push plate 9 of the push member 4, the press piece 10 of the push member 4 is connected to the unit 3.
The unit will fall slightly to the side and be fixed by applying pressure.

``Effect of the invention'' As mentioned above, the invention consists of overlapping a plurality of units on the base piece of the rail, which has a base piece that protrudes horizontally from the upper end of both side walls of a U-shaped cross section that is open at the top. This is a fixing device for rail attachment parts that is fitted, installed and fixed, and has a front upright push plate, a connecting plate, and a rear upright push plate that are connected at the bottom to form a U-shaped cross section. A locking member having a U-shaped cross section with a front upright locking plate, a connecting plate, and a rear uprighting locking plate arranged in a row is fitted into the pushing member having a pressing piece extending from the center thereof, Insert a screw into the connection plate from above and screw it onto the connection plate, form the length of the front upright push plate of the push member to be slightly shorter than the length of the rear upright push plate, and attach the rails on both sides of the lower end of the upright push plate. A protruding tapered surface that guides the base piece of the front and
This is a fixing device for rail mounting parts, in which support pieces are bent outward so that the base piece can be held between both sides of the lower end of the rear upright lock plate and the lower ends of the front and rear upright push plates. Since the piece is pressed from above and below without misalignment between the lower surface of the push plate and the supporting piece of the lock member, no shearing force is applied to the base piece of the rail, and therefore the base piece is not deformed. Further, since the front upright push plate of the push member is slightly shorter than the rear upright push plate, the push piece is fixed slightly tilted toward the unit, so that the unit is fixed sufficiently firmly. Furthermore, since the tapered surface is protruded from the lower end of the upright push plate of the push member, the fixing device can be easily and reliably positioned on the rail, and will not come off or be difficult to fix.

[Brief explanation of the drawing]

Figures 1 to 4 show a terminal block of a specific embodiment to which the present invention is applied; Figure 1 is a front view thereof, Figure 2 is a plan view of Figure 1, and Figure 3 is the left side of Figure 1. 4 is a longitudinal sectional view of FIG. 1, FIGS. 5 to 7 show the fixing device, FIG. 5 is a front view thereof, FIG. 6 is a plan view of FIG. 5, and FIG. Right side view of Figure 5, Figures 8-1
0 shows the pushing member, FIG. 8 is a front view thereof, FIG. 9 is a plan view of FIG. 8, FIG. 10 is a right side view of FIG. 8, and FIGS. 11 to 13 show a locking member. 1st
1 is a front view thereof, FIG. 12 is a plan view of FIG. 11, and FIG. 13 is a right side view of FIG. 11. 1...Base piece, 2...Rail, 3...Unit,
7... Front standing push plate, 8... Connection plate, 9... Back standing push plate, 10... Pressing piece, 4... Pushing member, 1
1...Front standing lock plate, 12...Connection plate, 13...
... Rear standing lock plate, 5 ... Lock member, 6 ... Screw, 14 ... Tapered surface, 15 ... Support piece.

Claims (1)

[Scope of utility model registration request] A fixing device for rail attachment parts that is used to overlay and fit multiple units onto a base piece of a rail that has base pieces that project horizontally outward from the upper ends of both side walls of a U-shaped cross section that is open at the top. The pusher has a lower part open, a front upright pusher plate, a connecting plate, and a rear upright pusher plate connected together to form a U-shaped cross section, and a presser piece extending above the center of the front upright pusher plate. A lock member formed in a U-shaped cross section by opening the lower part and connecting a front upright lock plate, a connecting plate, and a rear upright lock plate is fitted into the member, and a screw is inserted into the connecting plate from above to connect. The length of the front upright push plate of the push member is formed to be slightly shorter than the length of the rear upright push plate, and tapered guide surfaces for guiding the base piece of the rail are projected on both sides of the lower end of the upright push plate. A rail installation characterized in that support pieces bent outward are provided on both sides of the lower ends of the front and rear upright locking plates to allow the base piece to be held between the lower ends of the front and rear upright push plates. Parts fixing device.