JPH0516802Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a current collector that is attached to the ceiling of a vehicle or transport machine that runs along a rail.

[Prior Art] Conventionally, this type of current collector has a structure shown in FIG. 3.

In this case, a mounting base 51 having a mounting seat 52 on its upper surface is fixed to the upper part of a mounting insulator 63, and the lower ends of a pair of opposing lower arms 53 are rotatably connected to both ends of the mounting seat 52. The lower ends of the pair of opposing upper arms 54, whose upper ends are rotatably connected to each other, and the upper ends of the pair of opposing lower arms 53 are rotatably connected, and the upper ends of the pair of opposing upper arms 54 are assembled at the connecting portion of the upper ends. The electronic device 55 is attached, and protrusions 60 extending downward from the lower ends of the pair of opposing upper arms 54 are connected to each other via a tension spring 56.

In order to adjust the spring pressure of the tension spring 56, the tension spring 56 is attached to the protrusion 60 at the lower end of the upper arm 54 as follows.

That is, adjustment bolts 57 are connected to both ends of the tension spring 56, and the adjustment bolts 57 are passed through a horizontal shaft 61 supported by a protrusion 60 from the inside to the outside, so that the adjustment bolts 57 protrude outward from the horizontal line 61. A nut 62 is screwed onto the bolt 56,
By rotating this nut 62 using a tool such as a wrench or spanner, the amount by which the nut 62 is screwed into the adjustment bolt 57 is changed, and the spring pressure of the tension spring 56 is adjusted. The adjustment bolt 57 and the tension spring 56 are attached to a ring portion 58 formed on the head of the adjustment bolt 57.
The connection is made by hooking the end hook 59 of the tension spring 56.

[The problem that the idea aims to solve]

By the way, when adjusting the spring pressure of the tension spring 56, the nuts 62 screwed onto the left and right adjustment bolts 57 must be rotated using a tool such as a wrench or spanner, as described above.

Therefore, it is necessary to prepare a tool each time to adjust the spring pressure, and the left and right adjusting bolts 57
Since each nut 62 screwed into the spring must be rotated separately, there is a problem in that adjusting the spring pressure takes time and effort.

In addition, since the current collector as described above is installed on the ceiling of a vehicle, etc., the work to adjust the spring pressure must be done at a high place. The task of rotating the is quite difficult.

Therefore, this invention aims to make it possible to adjust the spring pressure without using tools such as a wrench, and to make the adjustment quickly.

[Means to solve the problem]

In order to solve the above problem, this invention has a pair of opposing lower arms 3a, 3 at both ends of the mounting base 2.
a pair of opposing upper arms 4a, 4b whose lower ends are rotatably connected and whose upper ends are rotatably connected to each other;
and the pair of opposing lower arms 3a, 3b.
The lower ends of the upper arms 4a, 4b are connected rotatably to the upper ends of the pair of opposing upper arms 4a, 4b.
and the pair of opposing lower arms 3a, 3b.
In the current collector device in which the upper arms 4a, 4b of the opposing pair are connected via a tension spring 10, the above-mentioned pair of opposing lower arms 3a, 3b are connected.
Alternatively, the heads 14 of the left and right adjustment bolts 11a, 11b are rotatably attached to a pair of opposing upper arms 4a, 4b with the screw threads in opposite directions,
Both ends of the tension spring 10 are fixed to the left and right nuts 13a, 13b screwed onto the left and right adjustment bolts 11a, 11b, and the left and right nuts 13a,
13b and the outer surface of the tension spring 10, a nut 13
A square tube box 12 is placed over the square tube box 12 in a non-rotatable manner over a, 13b, and the left and right nuts 13a, 13 are connected to the square tube box 12.
b are fixed so as not to be movable in the axial direction of the rectangular tube box 12.

[Operation] When the square tube box 12 is held and rotated around the left and right adjusting bolts 11a, 11b, the left and right nuts 13a, 13b are rotated accordingly.
rotates on the adjustment bolts 11a, 11b, and depending on the direction of rotation, the left and right nuts 13a, 13b move closer to each other or move away from each other, so that the rectangular tube box 12
By grasping and rotating the left and right nuts 1
Tension spring 10 with both ends fixed to 3a and 13b
expands and contracts, and the spring pressure changes.

〔Example〕

Hereinafter, an embodiment of this invention will be described based on FIGS. 1 and 2.

The current collector of this invention is attached to the ceiling of a vehicle or transporter via an insulator 19.

A U-shaped mounting base 2 whose upper surface is open is fixed to the insulator 19 via a mounting plate 1.

The lower ends of a pair of opposing lower arms 3a, 3b are rotatably connected to both ends of the mounting base 2 by a shaft 7.

The lower ends of the pair of opposing upper arms 4a, 4b, whose upper ends are rotatably connected to each other by a shaft 5, are rotatably connected to the upper ends of the pair of opposite lower arms 3a, 3b by a shaft 8. has been done.

A current collector 6 is attached to a shaft 5 connecting the upper ends of the upper arms 4a and 4b.

The lower arms 3a, 3b are replaced by the upper arm 4a,
4b are provided in pairs at the front and rear, respectively, as shown in FIG. 2, and a spacing bolt 9 is fixed to the intermediate portion of the upper arms 4a, 4b.

A shaft 15 is fixed parallel to the shaft 7 at opposing positions of the pair of opposing lower arms 3a and 3b,
Heads 14 of adjusting bolts 11a and 11b are rotatably attached to this shaft 15, with the left and right threads oriented in opposite directions.

Nuts 13a and 13b having square outer shapes are screwed into the adjustment bolts 11a and 11b, respectively. The left and right nuts 13a, 13b are connected to each other via a tension spring 10. The nuts 13a, 13b and both ends of the tension spring 10 are fixed by welding.

The outer surfaces of the nuts 13a, 13b and the tension spring 10 are covered with a square tube box 12. The left end of this rectangular tube box 12 is fixed to the left nut 13a with a screw 17a, so that the left nut 13a rotates together with the rectangular tube box 12.
It moves along the adjustment bolt 11a. The nut 13b on the right side is fitted into the square tube box 12, so it rotates together with the square tube box 12, but the nut 13b on the left side
Since the nut 13b is not fixed to the rectangular tube box 12 as shown in FIG.

Further, a boss 18 is fitted to the right end of the rectangular tube box 12 between it and the adjustment bolt 11b.
This boss 18 is connected to the rectangular tube box 12 by screws 17b.
is fixed.

Head 1 of the left and right adjustment bolts 11a and 11b mentioned above
4 and the shaft 15 are fixed by a clip pin 16.

The current collector of this invention has the above-mentioned structure, and the spring pressure of the tension spring 10 can be adjusted by grasping the rectangular tube box 12 with your hand and tightening the rectangular tube box 12 with the left and right adjustment bolts 11a, 11b. This can be done by rotating around the axis.

That is, when the square tube box 12 is gripped and rotated, the left and right nuts 13a, 13b rotate with respect to the adjustment bolts 11a, 11b, and depending on the direction of rotation, the left and right nuts 13a, 13b approach each other.
Also, since they separate in the opposite direction, by grasping and rotating the square tube box 12, the left and right nuts 13a, 13b can be removed.
The tension spring 10, whose both ends are fixed, expands and contracts, and the spring pressure changes.

[Effect of idea]

As described above, according to this invention, by grasping and rotating the rectangular tube box 12 placed over the tension spring 10, the tension spring 10 can be expanded and contracted and the spring pressure can be changed. Spring pressure can be adjusted without the need for tools such as .

Furthermore, the nuts 13a and 13b that fix both ends of the tension spring 10 are screwed into the left and right adjustment bolts 11a and 11b, which have threads in opposite directions. When the nuts 13a and 13b are rotated, the nut 13
The amount by which a and 13b move toward or away from each other is large, and therefore the spring pressure can be adjusted quickly.

Furthermore, since the tension spring 10 is housed in the rectangular tube box 12, there is also the effect that corrosion of the tension spring 10 can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an embodiment of a current collector according to this invention, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG. 3 is a front view of a conventional example. 2...Mounting stand, 3a, 3b...Lower arm, 4
a, 4b... Upper arm, 6... Collector, 1 example...
...Tension spring, 11a, 11b...Adjustment bolt,
12... Square tube box, 13a, 13b... Nut.

Claims (1)

[Scope of utility model registration request] A pair of opposing lower arms 3 are installed at both ends of the mounting base 2.
A pair of opposing upper arms 4 whose lower ends are rotatably connected to each other and whose upper ends are connected to each other in a freely circuitable manner.
a, 4b and the pair of opposing lower arms 3
a, 3b are rotatably connected, and a current collector 6 is attached to the connecting portion of the upper ends of the pair of opposing upper arms 4a, 4b.
a, 3b mutually or oppositely paired upper arms 4
A, 4b are connected to each other via a tension spring 10 in the current collector, the pair of opposing lower arms 3a, 3b or the pair of opposing upper arms 4a, 4.
b, the heads 14 of the left and right adjustment bolts 11a, 11b are rotatably attached with the threads in opposite directions, and the left and right adjustment bolts 11a, 11b are
Both ends of the tension spring 10 are fixed to the left and right nuts 13a, 13b screwed into the left and right nuts 13a, 13b, and square tubes are attached to the outer surfaces of the left and right nuts 13a, 13b and the tension spring 10 so as not to rotate with respect to the nuts 13a, 13b. box 1
2, cover this square tube box 12 and nuts 13 on the left and right.
A current collector characterized in that one of a and 13b is fixed so as not to be movable in the axial direction of a rectangular tube box 12.