JPH0428879Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a device for covering cushioning material in a windsurfing boom, and is suitable for use in manufacturing and repairing the boom.

[Summary of the idea]

In the present invention, a device for covering the base material of a boom with a tubular cushioning material is composed of a tubular body through which the cushioning material is inserted, and a vacuum pump connected to this tubular body. By sucking the air inside the tubular body and expanding the cushioning material in the radial direction, and inserting the boom base material through the cushioning material in this state, the cushioning material can be easily and shortened to the boom base material. It can be coated over time.

[Conventional technology]

First, the boom of a windsurf-in to which the present invention is applied will be explained with reference to FIGS. 4 and 5. In FIG. 4, 1 indicates the entire windsurf-in, 2 indicates a boat, and 3 indicates a mast, 4
is a sail, and a boom 5 for tensioning and operating the sail 4 is attached between the middle part of the mast 3 and the rear end of the sail 4. This boom 5
As shown in Fig. 5, it is mainly formed in a symmetrical arched shape, and has a holding part 5a which is the part that the athlete holds during the windsurfing competition, and a so-called nesting type part for this holding part 5a. An adjustment mechanism is built in between the holding part 5a and the moving part 5b, and this adjustment mechanism allows the moving part 5b to move in and out of the holding part 5a in stages. By sliding, the entire length of the boom 5 can be adjusted as desired.

The holding portion 5a of the boom 5 configured as described above is made of synthetic rubber or synthetic resin such as polyethylene, unfoamed or foamed, on the circumferential surface of the boom base material 6 made of a pipe such as aluminum or FRP (fiber reinforced resin). The cushioning material 7 prevents danger in the event of a collision, prevents the hand from slipping when wet, and also improves the feel when gripping. It is kept in good condition.

Conventionally, the boom base material 6 of the boom 5 is covered with the cushioning material 7, as shown in FIGS. This cushioning material 7 was wrapped around the circumferential surface of the boom base material 6 and adhered with an adhesive. However, in this case, a seam 8 of the cushioning material 7 is formed on the surface of the boom 5, which is unfavorable in terms of appearance and also gives a poor feel when gripping the boom 5. This has had many disadvantages, such as the risk of peeling off.

In order to improve this problem, it has been considered to use a tubular cushioning material 9 as shown in FIG. That is, the inner diameter of the tubular buffer material 9 is slightly smaller than the outer diameter of the boom base material 6, and the diameter of the buffer material 9 is expanded to closely cover the circumferential surface of the boom base material 6. By doing so, it is possible to obtain a boom 5 that has no seams of cushioning material on the surface and has good appearance and durability.

[Problem that the invention attempts to solve]

However, since the inner diameter of the tubular buffer material 9 is smaller than the outer diameter of the boom base material 6, it is extremely difficult to cover the boom base material 6. In other words, it is impossible to cover the boom base material 6 by inserting it into the boom base material 6 from the axial direction when the boom base material 6 is long because of the large friction between the buffer material 9 and the boom base material 6. . Further, as shown in FIG. 8, the entire cushioning material 9 is inverted in advance,
The boom base material 6 is rotated gradually forward from its end.
Although it is possible to cover the surface of the surface of the surface, this method requires a lot of effort and is impractical.

The present invention has been made in view of the above, and an object of the present invention is to provide a device that can easily coat a boom base material with a tubular cushioning material, and to improve the efficiency of the cushioning material coating work.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention includes a device for covering the peripheral surface of a boom base material with a cushioning material formed in a tubular shape, the device being formed with a larger diameter than the cushioning material,
It consists of a tubular body through which a cushioning material can be inserted, and a vacuum pump connected to the inside of this tubular body.

[Effect]

The measures described above operate as follows.

When the air inside the tubular body is sucked by a vacuum pump while the cushioning material is inserted into the tubular body, the cushioning material expands in the radial direction so as to be pressed against the inner peripheral surface of the tubular body, and its inner diameter is expanded. In this state, the boom base material is inserted into the inner cavity of the cushioning material, and then the vacuum pump is stopped and left in the air, so that the cushioning material contracts in the radial direction and returns to tight contact with the circumferential surface of the boom base material. As a result, the boom base material is covered with the cushioning material.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.

In the figure, reference numeral 10 indicates the device of the present invention as a whole, and the device 10 is composed of a tubular body 11 through which a cushioning material 9 is inserted, and a vacuum pump 12 connected to this tubular body 11.

The tubular body 11 is generally commercially available and easily available, and is made of a flexible material such as vinyl chloride resin, can be bent into any shape, and has an inner diameter that is cushioned. The diameter is larger than the outer diameter of the material 9 by a required diameter. Further, this tubular body 11 has a tubular hard material 13 made of metal or synthetic resin embedded in the circumferential direction, thereby maintaining the required strength in the radial direction. It is important to select a tubular body that undergoes minimal expansion and contraction in the axial direction due to the required vacuum and pressurization applied to the interior.

Furthermore, cylindrical end holding members 14a and 14b are fixed to the openings at both ends of the tubular body 11. The terminal holding members 14a, 14b have an inner diameter slightly larger than the outer diameter of the cushioning material 9, and when covering the cushioning material 9, the terminal holding members 14a, 14b are attached to both sides of the cushioning material 9. This is done so that the terminal part is locked.

Furthermore, a connecting body 15 for connecting the vacuum pump 12 is interposed in the intermediate portion of the tubular body 11 . That is, this connecting body 15 has a cylindrical portion 16, and openings 16a and 16 at both ends of this cylindrical portion 16.
In b, the ends of the tubular body 11 which is divided into both sides are fixed and sealed, and the central part communicates with the inner space of the cylindrical part 16 in the direction crossing the cylindrical part 16. A nozzle 17 is provided.

The nozzle 17 of this connecting body 15 is connected to the vacuum pump 12 via a connecting pipe 18 having a required strength in the radial direction. This vacuum pump 12
has an intake nozzle 12a and an exhaust nozzle 12b, and under normal conditions, the connecting pipe 1 is connected to the intake nozzle 12a.
8 is connected.

Next, the operation of covering the boom base material 6 with the cushioning material 9 using the device 10 of the present invention configured as described above will be explained.

First, the cushioning material 9 is inserted into the inner space of the tubular body 11, and both end portions thereof are folded back to form the end holding member 14.
a, 14b to seal the inner space of the tubular body 11 (see FIGS. 1 and 3A). After setting the cushioning material 9 in this way, when the vacuum pump 12 is operated to suck the air inside the tubular body 11, the inside of the tubular body 11 becomes a vacuum state, and the cushioning material 9 expands in the radial direction due to its elasticity, and becomes a tubular shape. Inner peripheral surface 11 of body 11
A is pressed and held, that is, its inner diameter is expanded.

In this state, the boom base material 6 whose circumferential surface has been coated with adhesive 19 in advance is inserted into the inner cavity of the cushioning material 9 (see FIGS. 2 and 3B). After that, when the operation of the vacuum pump 12 is stopped and air flows into the tubular body 11, the cushioning material 9 contracts in the radial direction due to its own elastic restoring force and comes into close contact with the circumferential surface of the boom base material 6 ( (see FIG. 3C), and is fixed with an adhesive. In addition, in the contraction operation of this cushioning material 9,
The connecting pipe 18 is connected to the intake nozzle 12a of the vacuum pump 12.
If it is removed from the tube and connected to the exhaust nozzle 12b side, and air is forcibly fed into the tubular body 11, an even better adhesion effect can be obtained.

In this way, the cushioning material 9 is attached to the circumferential surface of the boom base material 6.
After closely covering the boom base material 6, both ends of the cushioning material 9 are removed from the end holding members 14a and 14b.
When it is pulled out from inside the tubular body 11, the boom 5 covered with the cushioning material 9, that is, the completed product is obtained. Note that the adhesive 19 that adheres the cushioning material 9 to the boom base material 6 is completely fixed after the required time has passed, and in this state, a more reliable state of adhesion of the cushioning material 9 to the boom base material 6 can be obtained. It is.

If the coating device 10 of the present invention is used as described above,
Since the tubular cushioning material 9 can be coated onto the boom base material 6 very easily, the work efficiency in the manufacturing process of the boom 5 can be greatly improved, and it is also particularly effective when used for repairing the boom 5. That is, in the windsurf-in boom 5, the cushioning material 9 is worn out due to long-term use under harsh conditions, so it is often necessary to replace the cushioning material 9. In this case, by covering the boom base material 6 with the cushioning material 9 using the device 10 of the present invention,
It can be easily repaired. Booms 5 of various curved shapes are applied during this repair, but
Since the tubular body 11 of the device 10 of the present invention is flexible, it can be adapted to any shape of the boom 5. That is, the tubular body 11 is curved according to the curved shape of the boom base material 6 when the boom base material 6 is inserted in the operation of covering the cushioning material 9 described above, and in this curved state, the covering of the cushioning material 9 is performed as described above. Therefore, regardless of the shape of the boom 5, the boom 5 can always be properly repaired.

In the above embodiment, the cushioning material 9 is inserted into the tubular body 11, and the terminal holding members 14a, 14 whose both ends are fixed to the openings at both ends of the tubular body 11 are used.
b, but the both ends of the tubular body 11 are not limited to this configuration; Any structure may be used as long as it can be closed and the inner space of the tubular body 11 can be sealed.

Furthermore, in this embodiment, in the operation of covering the cushioning material 9, the boom base material 6 is coated with adhesive 19 in advance, and the cushioning material 9 is adhered to the boom base material 6. is not particularly indispensable, and the cushioning material 9 may be adhesively held to the boom base material 6 only by friction due to the elastic contraction force of the cushioning material 9 in the radial direction.

Furthermore, the holding part 5a of the boom 5 has several sizes, but in this case, it is easy to replace one side of the tubular body 11 by using a commercially available coupler and prepare several types of long and short tubular bodies. can correspond to

Furthermore, it is possible to adopt embodiments other than those shown in this example in other configurations, and it goes without saying that this example does not specify the present invention and that various changes and changes are possible. .

[Effect of idea]

As described above, the shock absorbing material covering device for a windsurf-in boom of the present invention includes a flexible tubular body formed with a larger diameter than the shock absorbing material and into which the shock absorbing material is inserted;
a vacuum pump connected to the tubular body, the vacuum pump sucks air inside the tubular body,
By inserting the base material of the boom into the inner cavity of the cushioning material with the cushioning material expanded in the radial direction, it is possible to cover the boom base material with the cushioning material extremely easily. Work efficiency in the boom manufacturing process can be improved, and great effects can be obtained when used for repairing booms.Moreover, this device has an extremely simple configuration and can be provided at low cost. Furthermore, from a cost perspective, when it comes to the cushioning material itself, tubular ones are slightly more expensive than single-leaf or strip-shaped ones, but considering the above-mentioned work efficiency and product durability, etc. In turn, it is possible to provide users with high-quality products at low prices. Therefore, the practical effect is extremely large.

[Brief explanation of drawings]

Fig. 1 is a vertical side view of the device of the present invention, Fig. 2 is a longitudinal side view of the cushioning material during covering operation, and Figs.
C is a cross-sectional view of the main parts to explain the process of covering the cushioning material by the device of the present invention, FIG. 4 is a perspective view of the Windsurf-in, and FIG. 5 is a partially cutaway perspective view of the boom of the Windsurf-in. Figure 6A is a perspective view showing a part of the boom that covers a sheet of cushioning material, Figure B is a perspective view of a part of the boom that covers a strip-shaped cushioning material, and Figure 7 shows a tubular cushioning material. FIG. 8 is a side view illustrating an example of a conventional method of covering a cushioning material. In the figure, 6 is a boom base material, 9 is a buffer material, 11 is a tubular body, and 12 is a vacuum pump.

Claims (1)

[Claims for Utility Model Registration] A device for covering the peripheral surface of a base material of a boom with an elastic cushioning material formed in a tubular shape, the inner diameter of which is larger than the outer diameter of the cushioning material, a flexible tubular body through which a cushioning material is inserted; and a vacuum pump connected to the tubular body that sucks air to the outside of the cushioning material inserted inside the tubular body and forcibly expands the cushioning material in a radial direction. After inserting the base material of the boom into the inner space of the cushioning material with the cushioning material inflated by the vacuum pump, suction by the vacuum pump is stopped and the cushioning material is expanded. A shock absorbing material coating device for a windsurfing boom, characterized in that the shock absorbing material is coated on a base material of the boom by contracting the shock absorbing material.