JPH0122738Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the connection of a trolleybus duct.

As is well known, a trolleybus duct is a rectangular cylindrical duct with a trolley running section on the lower side, an opening between the edges of the running section, and a bent section connected to the edge of the trolley running section. The trolley conductor is supported by an insulator and placed inside the duct, and the current collecting trolley is placed inside the duct and the trolley's bogie is placed so that it rolls on the trolley running section. At the same time, the current collector mounted on the trolley is set in contact with the trolley conductor, and the trolley has a connecting body that hangs down from the duct opening. By associating the trolley with the trolley conductor, the trolley travels within the duct and the current collector moves in contact with the trolley conductor as the mobile device travels, thereby collecting current. In addition, the connecting body of the current collection trolley is equipped with a guide wheel, which moves while being positioned between the bends on the opening side of the duct, and prevents the trolley from swinging from side to side unnecessarily. It is intended to achieve stable contact between the trolley conductor and the trolley conductor.

Since the trolleybus duct is made up of fixed length units of several meters, these units are connected in sequence to form a series of power supply paths.

When looking at the connection structure of ducts, the connection between such units is generally made by attaching side plates from the left and right sides of the duct, and elastically fitting covers that grip the left and right side plates from the top of the duct so that they are butted together. It was mechanically connected by straddling the ends of the duct. In addition, since it is uneasy to grip the left and right side plates only by the elastic fitting of the cover,
A bent part is formed on the lower side to fit into the lower bent part of the duct, and by using the fitted part of these bent parts as a fulcrum, it is rotated toward the left and right sides of the duct, so that the lower end is connected to the duct. A device has been devised to achieve a firm connection by being gripped by a cover that is attached and elastically fitted from above.

However, each duct manufactured individually,
Side plates and covers contain manufacturing errors to varying degrees, and these errors tend to appear as gaps between each assembled part, especially when the side plates attached to the left and right sides of the duct have gaps. If the side plate is attached to the duct, the side plate will wobble, creating a step between the butting ends of the two ducts to be connected, and this step will also appear in the trolley running area, causing the trolley to collide with the step. This may impede the smooth running of the current collecting trolley, and sometimes the current collecting trolley may become detached from the trolley conductor, causing sparks to be generated.

The present invention has been developed in view of the above-mentioned problems, and its purpose is to provide an improved trolleybus duct connection part that eliminates the wobbling of the side plate and prevents the formation of a step at the duct connection part. be.

That is, as shown in the attached drawings, the connection part of the trolleybus duct according to the present invention is formed into a rectangular tube shape with trolley running parts f, f and an opening h between the edges of these running parts on the lower side. The side plates 2, 2 attached to the left and right side surfaces of the duct 1 are installed astride between the abutted end portions of the duct 1 in which the bent portions e, e are formed in series with the edges of the running portions f, f, and the duct 1. A connection part that is attached with a cover 3 that is elastically fitted so as to grip the both side plates from above,
A substantially V-shaped bent portion d is provided on the lower side of the left and right side plates 2, 2 and contacts the lower surfaces of the trolley running portions f, f of the duct, and elastically presses the upper surfaces of the bent portions e, e from an oblique direction. , d, and protrusions a, a are formed on the lower surfaces of the trolley running parts f, f, and holes b, b into which the protrusions a, a are fitted and locked are formed in the bent parts d, d of the side plates. Moreover, the left and right side plates 2 are further characterized in that they have elastic tongues c, c that protrude on the sides that contact the left and right side surfaces of the duct 1.

FIG. 1 and FIG. 2 show an embodiment of the connection part of the trolleybus duct according to the present invention.
The trolley conductor and current collecting trolley disposed inside the duct 1 are omitted from illustration.

The duct 1 is shaped like a rectangular cylinder so as to provide a space for arranging the trolley conductor inside and for running the current collection trolley, and the trolley running portion f, f in a row,
An opening h is set between the edges of these trolley running parts f, f. Further, approximately L-shaped bent portions e, e are extended from the edges of the trolley running portions f, f. On the lower surface of the trolley running parts f, f are protrusions a formed by cutting and raising the trolley itself.
A is provided.

On the other hand, the left and right side plates 2, 2 have bent portions d, d in the shape of a substantially square shape at the extension portions of the left and right side plates 2, 2 bent at a substantially right angle on their lower sides, and the duct 1
Holes b, b into which the protrusions a, a of the trolley running section f can be fitted are formed in a piece contacting the lower surface of the trolley running section f. Further, the side plates 2, 2 are formed with elastic tongues c, c which are cut and raised to protrude toward the side in contact with the duct 1 at the portions that contact the left and right side surfaces of the duct 1.

To explain how to assemble the parts configured as described above, the two ducts 1, 1, whose ends are butted together to form a series, are placed between the butted ends of the left and right side plates 2, 2 The cover 3 is straddled, and the installation operation in the process of being straddled is as follows.

In other words, before the left and right side plates 2, 2 come into contact with the left and right side surfaces of the duct 1 and the lower surfaces of the trolley running parts f, f, only the tip edges of the lower substantially V-shaped bent parts d, d are connected to the duct 1. A position in which it is introduced onto the opening side bent portions e and abuts on the bent portion e (right side plate 2 in Fig. 1).
), and the F-shaped bent part d,
By turning diagonally upward toward the side of the duct while d is in contact with the bent portions e and e of the duct, holes b and b formed in the substantially V-shaped bent portions are inserted into the trolley running portion. The protrusions a, a of the duct are inserted, and the V-shaped bent portions d, d are in contact with the trolley running portions f, f, and the inner surfaces are brought close to the left and right side surfaces of the duct to form elastic tongues c, c. is the duct 1
in contact with the left and right sides of the Once the left and right side plates 2, 2 are attached in this way, the cover 3 is moved downward from the upper side of the duct 1 and fitted elastically, so that the bends at both ends of the cover 3 are bent. The pieces press against the outer surfaces of the upper ends of the left and right side plates 2, 2, thereby achieving a predetermined mechanical connection.

The left and right side plates 2, 2, which are gripped at the upper side by the elastic fitting of the cover 3, have elastic tongues c, c in contact with the left and right side surfaces of the duct 2 due to the pressing force from the outside of the cover 3. It is elastically displaced so that it can come into contact with the left and right side surfaces of the duct 2. At that time, the side plate itself tries to separate from the side surface of the duct 1 due to the elastic restoring force stored in the elastic tongues c, c, but at this time, the tips of the V-shaped bent parts d, d on the lower side of the duct A pressing force is applied from an oblique direction onto the bent portions e, e, and the V-shaped bent portion d, the duct bent portion e, and the trolley running portion f,
At the same time, the protrusions a, a are strongly pressed against the edge surfaces of the holes b, b into which they are inserted,
As a result, the side plates 2, 2 themselves are prevented from opening outward by the elastic restoring force of the elastic tongues c, c, and by this prevention, the elastic restoring force stored in the elastic tongues c itself is preserved, It can be linked to the duct in a state where it is always elastically pressed.

In the connection section configured as above,
If a step is to occur between the abutting ends of the ducts 1, 1 that are connected to each other, it is possible to restore the normal abutting state.

In other words, if the trolley running parts f, f are vertically shifted so as to create a step between the abutted ends, the substantially V-shaped bent parts d, d of the side plates 2, 2
A deforming force is applied to change the refraction angle,
The elastic energy stored at that time acts to eliminate such a step, and also creates a step between the left and right bends e and e on the opening side, which provide the rolling surfaces g and g of the guide wheels of the current collection trolley. This is because, if they are misaligned, a further displacement force is applied to the elastically biased elastic tongues c, c, and the elastic energy stored at that time works to eliminate the difference in level.

As explained above, according to the connecting part of the trolleybus duct according to the present invention, the level difference that may occur vertically and horizontally between the ducts that are butted together is corrected so as to eliminate it. The intended purpose of providing an improved trolleybus duct connection that does not create a step in the connection has been achieved and is of great practical benefit.

[Brief explanation of the drawing]

The accompanying drawings show an embodiment of the connection section of a trolleybus duct according to the present invention, with FIG. 1 being an explanatory diagram showing the connection section from a cross section, and FIG. 2 being an explanatory diagram showing the connection section from the front. In the figure, 1 is the duct, 2 is the side plate, 3 is the cover, a
is a protrusion, b is a hole, c is an elastic tongue, d is a roughly V-shaped bent part, e is a bent part on the duct opening side, f is a trolley running part, g is a guide wheel rolling surface, and h is an opening. be.

Claims (1)

[Scope of utility model registration request] A duct having a rectangular cylindrical shape with trolley running parts f, f on the lower side, an opening h between the edges of these running parts, and bent parts e, e connected to the edges of the running parts f, f. Side plates 2, 2 to be attached to the left and right side surfaces of 1 to be installed astride between the abutted ends of 1.
and a cover 3 that is elastically fitted so as to grip the both side plates from above the duct 1, and the connecting part is attached with a cover 3 that is elastically fitted so as to grip the both side plates from the upper side of the duct 1, and the trolley running of the duct is attached to the lower side of the left and right side plates 2, 2. Approximately V-shaped bent portions d, d are provided which are in contact with the lower surfaces of the portions f, f and press elastically from the oblique direction on the upper surfaces of the bent portions e, e, and protrude from the lower surfaces of the trolley running portions f, f. a, a, and holes b, b for fitting and locking the protrusions a, a are formed in the bent portions d, d of the left and right side plates 2. A connecting portion of a trolleybus duct characterized by having elastic tongues c, c protruding on sides contacting left and right side surfaces.