JP2500463B2 - Insulation trolley guide cap - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide cap for an insulating trolley, which kind of guide cap is used to form an end approach for current collection at the end of an insulating trolley. The present invention relates to the provision of a guide cap for an insulating trolley of this kind, which is capable of connecting guide caps adjacent to each other in association with parallel installed insulating trolleys while adjusting their levels.

[0002]

2. Description of the Related Art An insulating trolley is formed by covering a molded bare conductor with an insulating cover having a substantially U-shaped cross section. The exposed portion of the conductor, that is, the current collecting surface was provided in the opening. The current collector slides on the current collecting surface of the conductor while being guided by the side opening of the insulating cover, thereby attempting stable current collection. In general, a plurality of insulating trolleys of this type are usually installed in parallel, and the current collectors that move the insulating trolleys are collectively pulled by a common pulling device.

By the way, in this type of insulating trolley, a guide cap having an end approach is attached to the end of the insulating trolley in order to allow the current collector to smoothly enter. It goes without saying that when insulating trolleys are laid in parallel, a guide cap is required for each of them.

The conventionally proposed guide cap is 1
Generally, one guide cap is attached to one insulating trolley, and when the insulating trolleys are installed in parallel, a plurality of insulating trolleys corresponding to the number of wires are installed individually on a support base, The end of each insulating trolley was inserted into the guide cap.

However, in the above-mentioned method, since a plurality of guide caps are installed independently of each other, it is very difficult to adjust the level between the guide caps. In particular, if the guide caps do not match the level of the insulating trolley in the longitudinal direction, there is a problem in distributing the plurality of current collectors that are collectively pulled to the individual insulating trolleys while advancing the current collectors. It impairs the guide function.

In view of the above-mentioned problems, a multi-groove-integrated type guide plate in which a plurality of guide grooves corresponding to the number of laying wires of an insulating trolley is formed using one wide plate material has been considered. Since such guide plates need to be manufactured one by one with different dimensions and groove numbers each time the number of wires installed in the insulating trolley changes, they are special products corresponding to the number of parallel wires in the insulating trolley. However, it was not possible to provide it at a low cost because of the high cost in terms of inventory management.
In addition, since a single guide plate has multiple guide grooves,
Dust may accumulate on the surface between the guide grooves or abrasion powder may adhere when the current collector slides, reducing the electrical insulation performance of the surface and causing a short circuit or ground fault. There was a problem.

Also, a method has been considered in which a plurality of guide caps are arranged in a horizontal row in a number corresponding to the number of parallel wires of the insulating trolley, and these are collectively attached by an attachment metal fitting. Every time the number of wires, that is, the number of guide caps changes, different dimensions are required, and there are troublesome problems such as an increase in the number of connecting parts. Moreover, there is a problem with the above-mentioned creeping insulation performance. It is hard to say that the problem has been resolved.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to deal with only one type of insulating trolley laid in parallel, and it is easy to adjust the level between the guide caps. It is an object of the present invention to provide a guide cap for an insulating trolley of this type, which can be performed without any problems and has no problem in terms of electric insulation performance on the surface. Therefore, there is an object of the present invention in that respect.

[0009]

A guide cap for an insulating trolley provided by the present invention has an end approach portion (1A) and an insulating trolley insertion portion (1B) connected to the end approach portion (1A), as shown in the accompanying drawings. A guide cap for the insulated trolley, wherein the insulating trolley insertion portion is
A pair of leg-shaped pieces (11, 1) formed in a substantially U shape and extending from a common mounting base (9) in parallel with each other.
2), and further provided on each of the outer surfaces of the pair of leg-shaped pieces with convex bases (5, 6) which are raised within the surface with a small width, and one convex base (6) is provided. Is provided with a dovetail-shaped recess (6a) penetrating in a direction orthogonal to the insertion axis direction of the insulating trolley, and the other projecting base (5) has a projecting part whose tip is enlarged to fit the recess. (5a) is provided between the guide caps (1, 1 ') adjacent to each other in relation to the insulating trolleys (4, 4') laid in parallel, and both convex bases (6, 5 ') are provided. Face each other and are connected (C) to each other, and one convex portion (5a ') is inserted into the other concave portion (6a) in a direction orthogonal to the insertion axis direction of the insulating trolley to be engaged and locked. Characterize.

[0010]

1 (a), (b), (c) and FIG. 3 show a preferred embodiment of a guide cap for an insulating trolley according to the present invention, in which (a) is a side view and (b). Is (a)
Is a sectional view taken along the line aa, (c) is a bottom view, and FIG. 3 is a sectional view at the time of combination.

The guide cap 1 which is the object of the present invention,
It is made of an insulating molded body of plastic or the like, and the end approach section 1A and the insulating trolley insertion section 1B are connected to each other. The end approach portion 1A is formed by forming a U-shaped approach groove 7 in the lower portion of the main body portion and gradually expanding toward the tip. One insulation trolley insertion part 1
B is formed into a substantially U shape by a mounting base 9 integrated with the main body of the end approach section 1A and a pair of leg-shaped pieces 11 and 12 extending from the mounting base 9 in parallel with each other. There is. The slit 8 is formed so as to divide the pair of leg-shaped pieces 11 and 12 from the end approach portion 1A, whereby the pair of leg-shaped pieces 11 and 12 can independently elastically deform (open legs). . The opening 10 set by the extension ends of the pair of leg-shaped pieces 11 and 12 serves as an insulating trolley fitting port. In addition, the pair of leg-shaped pieces 11 and 12
Locking projections 11a that are slightly raised on the inner facing surface of the
12a is formed. The insulating trolley 4 slides the inner surfaces of the pair of leg-shaped pieces 11 and 12 into each other by pushing the end of the insulating trolley 4 from the insulating trolley fitting port 10. At this time, the locking protrusions 11a and 12a
Are pushed outward by the intervention of the insulating trolley 4, the pair of leg-shaped pieces 11 and 12 are elastically deformed so as to open into a substantially “C” shape, and further when the insulating trolley 4 is pushed all the way, Insulating trolley 4 with locking protrusions 11a and 12a
And the pair of leg-shaped pieces 1 are fitted in the side grooves 4a, 4b of the
1, 12 are restored to their original state by the repulsive force due to elastic deformation, and thus are inserted into the end of the insulating trolley 4 in a sandwiched state.
By doing so, even when there is no room behind the end portion of the insulating trolley 4, the inserted state can be easily obtained without bending the insulating trolley 4. In addition, when inserting the insulating trolley 4, it will be easily understood that the same inserting state as described above can be obtained by inserting the insulating trolley 4 from the side other than the above method.

However, on the outer surfaces of the pair of leg-shaped pieces 11 and 12, the convex base portions 5 and 6 which are raised in the surface with a small width are formed.
And one dovetail 6 is formed with a dovetail-shaped recess 6 protruding in a direction orthogonal to the insertion axis direction of the insulating trolley 4.
a is formed, and the convex portion 5 on the other side is formed with a convex portion 5a whose tip is enlarged to fit the concave portion 6a.

As shown in FIGS. 1 (c) and 3, the insulating trolleys are usually installed in parallel as 4,4 '.
In connection with this, the guide caps are also juxtaposed as 1,1 '. According to the present invention, between the guide caps 1 and 1'which are adjacent to each other in such a manner, both of the convex base portions 6 and 5'are faced and connected to each other, and one convex portion 5a 'is connected to the other. The insulating trolley is inserted into the recess 6a from a direction orthogonal to the insertion axis direction of the insulating trolley, and is fitted and locked. Further, by fastening the mounting bases 9 and 9 to the base 3 with the respective application screws 2, the mutual connection and locking can be maintained.

The convex portion 5a and the concave portion 6a are shaped and
The mode can be modified, for example, a plurality of rows can be used as shown in FIG. 2A or the shape can be modified as shown in FIG.

[0015]

According to the guide caps of the present invention and the guide caps 1 and 1'arranged in parallel according to the present invention constructed as described above, each one has the same shape, and the convex stands of each other are formed. Only by connecting the parts 6 and 5 ′ to each other, the insulating trolleys 4 and 4 can be arranged in parallel with each other, and the protrusions 5a ′ can be fitted and locked in the recesses 6a to level the insulating trolley in the axial direction. It is carried out incidentally, and by extension, the guide cap caps 1, 1'can be accurately connected and maintained in a horizontal row. Therefore, when a plurality of current collectors sliding on the insulating trolleys 4 and 4'are collectively pulled by a common pulling device and approached, each current collector smoothly enters the end approach groove 7 of each guide cap, and each insulating You will be able to board the trolley without any problems.

Further, between the guide caps 1 and 1'connected as described above, the leg-shaped pieces 12 and 11 'are provided.
Since the convex bases 6 and 5'protruding with a small width face each other in the plane of the so as to face each other so that they are connected to each other, a part of the outer surface of the leg-shaped pieces 12 and 11 'is placed between the insulating trolleys 4 and 4'. It is possible to obtain a positive creepage distance via the convex bases 6 and 5 ',
Even if a small amount of abrasion powder adheres due to the sliding of the current collector, it will not cause a significant decrease in the electrical insulation performance of the creeping surface, and connecting them together eliminates the problems of short circuits and ground faults that are likely to occur. You can

Therefore, all of the insulating trolleys installed in parallel can be handled by one type, and the level adjustment between the guide caps can be easily performed, and there is no problem in the electrical insulation performance of the creeping surface. The intended purpose of providing the guide cap for the insulating trolley is sufficiently achieved, the total cost is reduced without the need for extra connecting parts, and the practical effect is great.

[Brief description of drawings]

FIG. 1 shows an embodiment of a guide cap for an insulating trolley according to the present invention, (a) is a side view, (b) is a sectional view taken along the line aa of (a), and (c) is a bottom view.

2A and 2B are explanatory views showing modified examples of the connection configuration between the guide caps.

FIG. 3 is a cross-sectional explanatory view showing a situation in which the guide caps are arranged in parallel.

[Explanation of symbols]

 1,1 'Guide cap 1A End approach part 1B Insulation trolley insertion part 2 Screw 3 Base 4,4' Insulation trolley 4a Side groove 5,6 Convex base part 5a Convex part 6a Recess 7 Approach groove 8 Slit 9 Mounting base 10 Insulation trolley Fitting port 11, 11 ', 12, 12' Leg-shaped piece 11a, 11b Locking protrusion C Connecting portion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-61-263845 (JP, A) Actually open 57-124429 (JP, U) Actually open 61-192934 (JP, U)

Claims (1)

(57) [Claims] 1. A guide cap for an insulating trolley having an end approach portion (1A) and an insulating trolley insertion portion (1B) connected to the end approach portion (1A), wherein the insulating trolley insertion portion is substantially U-shaped. And has a pair of leg-shaped pieces (11, 12) extending in parallel with each other from a common mounting base (9), and further, on each outer surface of the pair of leg-shaped pieces. A convex base portion (5, 6) that is raised with a small width is provided in the surface, and one convex base portion (6) has a dovetail-shaped concave portion that penetrates in a direction orthogonal to the insertion axis direction of the insulating trolley ( 6a), and the other convex base portion (5) is provided with a convex portion (5a) whose tip is enlarged so as to fit the concave portion. (4, 4 ') in an insulating trolley laid in parallel. Between the adjacent guide caps (1, 1 ') adjacent to each other, both convex stands (6, 5 ') face each other and are connected (C), and one convex portion (5a') is inserted into the other concave portion (6a) in a direction orthogonal to the insertion axis direction of the insulating trolley. Guide cap for insulating trolley, characterized by being stopped.