JPS5918921B2 - electronic collector - Google Patents

Description

[Detailed Description of the Invention] In recent years, as a current collection system for electric cars, a large number of current collectors electrically and mechanically connected to the electric car are housed in a duct-type rigid trolley with a substantially U-shaped cross section. It has been developed as a current collection method to supply power to electric cars.

The present invention relates to a current collector particularly suitable for such a current collection method, which generates little noise when sliding with a duct type rigid trolley, and is suitable for small capacity current collection. The present invention relates to a current collector having a simple structure suitable for collecting current.

In general, a current collector receives power while being in contact with a rigid trolley, so it is required to have wear resistance and spring properties in addition to electrical conductivity.

Conventional current collectors of this type are generally of the pantograph type, but current collectors with this structure usually have a complicated structure, are expensive to manufacture, and have the disadvantage of being prone to failure.

An object of the present invention is to provide a current collector that can be manufactured at low cost through a simple manufacturing process and has fewer failures.

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a basic embodiment of a current collector 10 of the present invention, and this current collector has conductivity and spring properties as shown in FIG. For example, the metal strip 12 is punched out.

Length l. The metal strip 12 is cut into a predetermined length l, and the metal strip 12A of the predetermined length l is separated from both ends by a distance S3. Lengths S4 are provided at intervals of S1 in the longitudinal direction and face each other at intervals of Wl in the width direction.
It has two separating pieces 16, 16' formed by two pairs of slits 14, 14' of 2, and these separating pieces 1
6, 16' are two tongue pieces 16a, 16b, 16'a, 16'b cut by a slit 18 approximately in the middle thereof.
It consists of

The formation of the metal strip 12A and the slits 14, 14' and 18 are simultaneously formed in one punching process.

The current collector 10 of the present invention has a metal strip 12 as shown in FIG.
A current collector main body 22 and a separation piece 16 formed by bending A into a loop shape and fitting both ends thereof and mechanically and electrically connecting them by welding, riveting, or caulking as shown by reference numeral 20, 16' and an intermediate reinforcing body 24 formed by bending the current collector body 22 inside.

In the illustrated embodiment, there are 2 separation pieces 16 and 16'Gj each.
As shown in FIG. 1C, the tips of these tongues are inserted into two slings 26a and 26b at the tip of a conductive current collecting rod 26 extending from a moving body (not shown). It is electrically and mechanically connected to the current collecting rod 26 by screws or bolts 28, 28'l.

As shown in Fig. 2, if 5l-2S3=2S4, punching of Surin N4, 18 is performed continuously, and then 2
By cutting each pair of slits at the half point 81, a large number of metal strips 12A can be formed at high speed.

The metal strip 12 forming this current collector has wear resistance against sliding with the rigid trolley, and is made of high-strength steel, stainless steel, phosphor bronze, etc., which are electrical conductors, in consideration of the environment of the place of use. .

The radius R of the arcuate portions at both ends of the current collector body 22 and the radius R' of the arcuate portion of the intermediate bullet 24 are determined by the lengths Sl, S2, the mounting position of the current collector rod 26, the fixed crosspiece, etc.

In the illustrated embodiment, the width W1 of the two pairs of slits, that is, the separating pieces 16 and 16', is selected to be larger than the width W2 of the remaining two sides. Since the spring constant is different from that of the body 24, resonance caused by sliding of the current collector 10 can be suppressed.

Furthermore, in the illustrated embodiment, the separating pieces 16 and 16' are provided at the middle of the metal strip 12A in the width direction, but if these separating pieces are shifted to one edge, the part where the intermediate reinforcing body 24 is located It is advantageous to provide different spring constants in certain places to improve contact sliding characteristics such as preventing disconnection from the duct type rigid trolley.

In this case, the separation pieces 16 and 16' may be biased in the same direction, but the same effect can be obtained even if they are biased in opposite directions.

FIG. 3 shows the tongue pieces 16a, 16'a of the separation pieces constituting the intermediate reinforcing body 24 in the embodiment shown in FIG.

16b and 16'b are bent into an S-shape or a Z-shape with appropriate curvatures γ and γ' that do not cause plastic deformation. This is advantageous because it can make it stronger.

FIG. 4 shows an example in which the arcuate portions at both ends of the current collector body 22 in the embodiment shown in FIG. 1 are tapered 22a in the width direction of the metal band 12A. This is advantageous because material can be saved.

This taper may be replaced by a gentle curve.

Figures 5 to 9 show several variations of the invention.

In the modified example shown in FIG. 5, the current collector body 22 is parallel except for both ends, and is bent into a tapered shape instead of an arc shape at both ends, and the intermediate reinforcing body 24 is formed by integrating one of the separation pieces 16. Both ends of the separating piece 16' are bent inwardly into a tapered shape, and the tongue pieces 16'a and 16'b of the other separating piece 16' are connected to the separating piece 16 by bending them inwardly into a tapered shape.

The variant shown in FIG. 6 has a current collector body 22 that is substantially the same as the current collector body 22 of FIG. They are constructed by bending them inward and connecting them to each other.

In the modified example shown in FIG. 7, the current collector body 22 is formed into a substantially oval shape, and the intermediate reinforcing body 24 is formed by integrally bending the separating pieces 16 and 16' inward into an arc shape and connecting them to each other. has been done.

The modification shown in FIG. 8 corresponds to the combination of FIGS. 1 and 3, but there is an auxiliary condition 16c between the opposing tongues 16a and 16'a of the intermediate reinforcing body 24 and between the opposing tongues 16'a and 16 cans. , 16
Adding 'c' is adding.

In this case, the auxiliary strip 16c. A 16' cft current collecting rod 26 may also be used.

In the modified example shown in FIG. 9, the current collector body 22 is substantially the same as that shown in FIG. They are connected by bending them into an arc so that they meet.

Note that the same reference numerals in FIGS. 5 to 9 indicate the same parts.

In the above-described embodiments, the sulins 14 and 18 were formed by punching, but the present invention is not limited to this, and any method such as electrical discharge machining can be used.

According to the present invention, a metal strip is punched as described above,
Since the current collector can be easily manufactured by simply cutting, bending and connecting, it can be obtained economically, and since the structure is simple, there are few failures, and it is particularly suitable as a small capacity current collector.

[Brief explanation of the drawing]

1A to C are front views, vertical sectional views, and top views of the current collector according to the present invention, FIG. 2 is a top view of the metal strip used in the production of the present invention, and FIG. 3 is a modified intermediate reinforcement. Front view of body part, Figure 4A. B is an enlarged top view and side view of a part of the modified current collector body, FIGS. 5A and B are top views and front views of a modified example of the present invention, and FIGS. It is a front view of some other modifications. 10... Current collector, 12A... Metal strip,
14゜18...Slit, 16, 16'-...
...Separated piece, 16a. 16'a, 16b, 16'b... tongue piece, 20... connection part, 22... current collector main body, 24... intermediate reinforcing body .

Claims (1)

[Scope of Claims] 1. A current collector body in which a conductive, springy metal strip of a predetermined length is bent and its ends are connected to each other in an endless manner, and the metal strip is provided at intervals in the longitudinal direction. and an intermediate reinforcing body formed by bending a separation piece formed by two pairs of slits facing each other in the width direction of the metal strip inside the current collector body. 2. The assembly according to claim 1, wherein the intermediate reinforcing body is made up of two tongue pieces formed by cutting the separating piece in the middle, and the two tongue pieces are connected to each other. electronic. 3. The current collector according to claim 2, wherein each of the two tongues is bent into an S-shape or a 3-shape. 4. The current collector according to claim 3, wherein the intermediate reinforcing body has an auxiliary strip connected between the two tongue pieces. 5. Claims in which the intermediate reinforcing body consists of two circular arc parts formed by connecting two tongue pieces of one of the two separation pieces to two tongue pieces of the other separation piece, respectively. The current collector according to item 2. 6. The current collector according to claim 1, wherein the two separation pieces are interconnected. 7. The current collector according to claim 1 or 6, wherein the current collector body has a substantially polygonal shape. 8. The current collector according to claim 1 or 6, wherein the current collector body has a substantially oval shape. 9. The current collector according to any one of claims 1 to 8, wherein the width of the separation pieces of the intermediate reinforcing body is different from the width of the other remaining metal strip portions. 10. The current collector according to any one of claims 1 to 9, wherein the separation pieces of the intermediate reinforcing body are offset in the width direction of the metal strip.