JP2736636B2 - Axle mounting structure for roller slide - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a mounting structure of a spindle in a roller slide.

(Prior Art) In recent years, roller slides have been used for many slides.

This roller slide has a number of rollers arranged side by side between the left and right hand rubs to form a sliding surface, and almost no sliding occurs between the person sliding down this surface and the roller surface. is there. Therefore, in this slide, the apparent sliding friction of the sliding surface is significantly smaller than that of the conventional slide in which the sliding surface is formed of a plate material, and frictional heat is generated by sliding friction with the sliding surface when descending. And there is almost no risk of wear of clothes.

For this reason, the roller slide can make the downhill long, and the downhill can be bent left and right or the inclination angle can be changed to give a change or thrill to the downhill. It is not only used as a playground equipment for infants like a slide but also widely used for leisure and sports.

(Problems of the prior art) As shown in FIG. 4, a large number of mounting holes 12 are formed at regular intervals at positions facing the left and right handrails 11 on the slideway of the roller slide. A shaft 13 is mounted, and a roller 14 is further mounted thereon.

Since the left and right handrails 11 are firmly formed at predetermined intervals in advance, to attach the rollers 14 thereto, first place the rollers 14 between the respective mounting holes 12 of the handrail 11, and then A method is adopted in which the support shaft 13 is inserted therethrough and bolted. Therefore, it is necessary to make the inner diameter of the mounting hole 12 slightly larger than the outer diameter of the support shaft 13, so that a small amount of asobi occurs between the mounting hole 12 and the support shaft 13. .

Therefore, the weight of the person who slides down is transferred to the support shaft 13 via the roller 14 every time the person slides down the downhill surface, and this collides with the inner peripheral surface of the mounting hole 12 to generate a collision sound.

In addition, the inner periphery of the mounting hole 12 is worn or deformed due to repeated collisions, the inner diameter of the mounting hole 12 gradually increases, the associating with the support shaft 13 increases, and the durability of the runway decreases. At the same time, there was a problem that the collision sound increased.

(Object of the Invention) The roller slide according to the present invention eliminates asobi between the mounting hole of the handrail and the support shaft, thereby suppressing the generation of collision noise and eliminating the wear of this portion to improve the durability. It is intended to provide a means for causing this to occur.

(Summary of the Invention) The mounting structure of the support shaft in the roller slide according to the present invention is such that the slideway of the conventional roller slide has the inner diameter of the mounting hole of the handrail slightly larger than the outer diameter of the support shaft, The shaft was directly inserted into the shaft, and the inner diameter of the mounting hole was made sufficiently larger than the outer diameter of the shaft, and a bush was inserted between the two to mount the shaft. The bush is made so that it does not collide with the inner peripheral surface of the hole. In particular, the bush is made of a material such as hard nylon or hard synthetic rubber that has excellent weather resistance and impact resistance, and is slightly deformed by extremely strong compressive force. When the thickness is more than the distance between the mounting hole and the spindle
0.1-1.0mm large cylinder and formed so as to be able to slightly change the apparent diameter by making a cut in at least one place, one of which is previously fitted to the neck of the spindle Then, fit the other one into the mounting hole of the handrail on one side,
The support shaft is attached to the handrail by inserting the support shaft from a mounting hole of the handrail on the other side.

(Example) Hereinafter, the mounting structure of the spindle in the roller slide according to the present invention will be specifically described based on an example.

The figure is a longitudinal sectional view showing an example of a slideway of a roller slide. In the figure, reference numeral 1 denotes a handrail, 2 denotes a number of mounting holes formed in the handrail 1 at regular intervals, 3 denotes a spindle, and 4 denotes a support shaft. It is a roller.

These are the same as the above-mentioned conventional ones except that the inner diameter of the mounting hole 2 is formed several millimeters larger than the outer diameter of the support shaft 3. That is, the handrail 1 constitutes both sides of the runway, is a mounting frame for the roller 4 and is a safety shelf for preventing falling off of the sliding down, such as an iron pipe or an aluminum cast product. On the other hand, the mounting holes 2 are through holes for mounting the support shaft 3 and are formed at intervals slightly larger than the outer diameter of the roller 4.

The support shaft 3 is for mounting the roller 4 between the handrails 1 and is a kind of bolt having a male screw 31 formed at a tip thereof, to which the nut 5 is screwed.

The roller 4 is attached between the left and right handrails 1 by the support shaft 3 and forms a sliding surface of the runway. The roller 4 is made of a material such as nylon having high weather resistance and low frictional resistance. , Are loosely fitted to the support shaft 3 and are free to rotate.

By forming the inner diameter of the mounting hole 2 of the handrail 1 of the roller slide constructed as described above several millimeters larger than the outer diameter of the support shaft 3 and mounting the bush 6 in the gap, asobi between the two is reduced. This eliminates wear of the mounting hole 2 and at the same time suppresses the generation of collision noise.

The bush 6 is composed of a cylindrical fitting portion 7 and a flange 8, and the roller slide is installed outdoors, and the roller 4 and the support shaft 3 are moved each time the sliding surface slides down. Since the weight is applied to the support shaft 3, it is a rigid material such as hard nylon or hard synthetic rubber, has excellent weather resistance and impact resistance, and is slightly deformed by an extremely strong pressing force when the support shaft 3 is mounted. It is formed by using a material that can be used.

The fitting portion 7 is a portion sandwiched between the mounting hole 2 and the support shaft 3, and has a thickness of 0.1 to 1.0 depending on the distance between the mounting hole 2 and the support shaft 3.
It is formed about mm larger. A cut 9 is formed in at least one place in the fitting portion 7, and when the portion of the cut 9 is opened and closed, an apparent warp dimension changes, and the inner warp of the mounting hole 2 and the support shaft are changed. 3 corresponding to the external sutra.

Here, a procedure for attaching the roller 4 to the runway, in other words, a procedure for attaching the support shaft 3 to the handrail 1 will be described.

Bush 6 _L attached to the handrail 1 _L mounting hole 2 _L portions of the left side in the figure previously fitted beforehand to the neck portion of the support shaft 3. Then, fitting the bush 6 _R into the mounting hole 2 _R of the right handrail 1 _R, then by positioning the roller 4 between the mounting hole 2 _L and the mounting hole 2 _R, a shaft 3 mounting hole 2 _L by inserting from which is passed through the inside of the roller 4, plugging further bush 6 _R of the mounting hole 2 _R. Then bush 6 _L is pushed to the head 32 of the support shaft 3 is pushed together with the support shaft 3 in the mounting hole 2 _L, the distal end portion of the support shaft 3 is passed inserted in simultaneously bush 6 _R.

The male thread 31 of the tip portion of the support shaft 3 is to be screwed a nut 5 to at projecting from the bushing 6 _R.

Incidentally, the bush 6, as already mentioned since the wall thickness is slightly larger than the distance between the mounting hole 2 and the support shaft 3, the bushing 6 _L in the above is somewhat squeezed in the mounting hole 2 _L The bush 6 </ b> _R is deformed under the force of being spread by the support shaft 3 while being deformed.

As a result, both bushes 6 are attached to the inner peripheral surface of the mounting hole 2 and the support shaft 3.
Is pressed against the outer surface of the support shaft 3, so that there is no play between the support shaft 3 and the mounting hole 2, and the support shaft 3 is firmly fixed to the mounting hole 2.

If a large number of ridges 33 are formed in advance on the neck and the tip of the support shaft 3, the inner peripheral surface of the bush 6 is adapted to the shape of the ridges by the pressing force and deformed. Therefore, even if the pressure contact force with the support shaft 3 is somewhat weakened, there is an effect that the problem that the support shaft 3 rotates is suppressed.

Further, from the viewpoint of the work, when fitted to bushing 6 _L to the neck of the spindle 3, and when fitted with a bush 6 _R into the mounting hole 2 _R is is important that in which they do not fall off under its own weight or the like is there. Therefore, from this point, when the bush 6 is gradually thickened from the front end side to the rear end side, the front end portion is formed to have an inner diameter slightly smaller than the outer diameter of the support shaft 3 and is fitted to the support shaft 3. the so widened by the shaft 3, the rear end as is to be narrowed when fitted to the mounting hole 2 _R outer diameter slightly larger than the inner diameter of the mounting hole 2 _R have been installed hole 2 _R Niyotsu It is preferred that

(Effects) As described in detail above, the mounting structure of the support shaft in the roller slide according to the present invention forms the mounting holes formed in the left and right handrails several millimeters larger than the outer diameter of the support shaft. 0.1 to 1.0 mm thicker than the distance between the mounting hole and the spindle
A cylindrical bush of a relatively large size is attached, and in particular, the bush is formed in such a manner that at least one cut is made so that the apparent diameter can be slightly changed, so that a portion of the neck of the spindle is previously formed. Then, the support shaft is inserted into the mounting hole of the handrail.

Therefore, it is not necessary to provide a sill between the bush and the support shaft, and moreover, the bush can be firmly pressed against the inner peripheral surface of the mounting hole and the outer surface of the support shaft, thereby suppressing the occurrence of collision noise. At the same time, the wear of the mounting holes is eliminated.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a state in which a roller slide slideway according to the present invention is assembled, FIG. 2 is a longitudinal sectional view showing a bush, FIG. 3 is a perspective view of the same, and FIG. It is a longitudinal section showing a road. 1: Handrail, 2: Mounting hole 3: Support shaft, 4: Roller 5: Bush, 6: Fitting part 7: Fitting part, 8: Flange 9: Cut

Claims (1)

(57) [Claims] 1. A roller slide having a large number of mounting holes formed at regular intervals at positions opposed to the left and right handrails, each of which is provided with a support shaft, and further having a roller mounted thereon. It has a cylindrical shape whose wall thickness is about 0.1 to 1.0 mm larger than the distance between the mounting hole and the support shaft, and has a cut in at least one place so that the apparent diameter can be slightly changed. One of the bushes formed in the above is fitted in advance to the neck portion of the support shaft, the other one is fitted in the mounting hole of one handrail, and this support shaft is inserted through the mounting hole of the other handrail. The mounting structure of the support shaft in the roller slide characterized by being attached to the handrail by being inserted