JP2009090438A - Tool with buoyancy - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool in which water is prevented from intruding thereinto to provide a buoyancy. <P>SOLUTION: The body 1 of this tool comprises a grip 10 processed by injection-molding a plastic, a molded groove 11 formed in the top part of the grip 10, and a hollow gas chamber 12 formed in the grip 10 by a thermoplastic hollow molding or a hollow injection molding through the molded groove 11 in a molding step. Since the gas chamber 12 is formed hollow and joined to the molded groove 11, air is fed into the gas chamber 12 through the molded groove 11. The body 1 comprises a drive body 20. A joint part 21 is formed at the end of the drive body 20. A slip preventer 22 is formed on the surface of the joint part 21. When the joint part 21 is fitted to the molded groove 11, the drive body 20 and the grip 10 are joined to each other, and encloses the air in the gas chamber 12. Since the enclosed air is subjected to the pressure of the joint part 21, the pressure in the gas chamber 12 is larger than the atmospheric pressure on the outside of the body 1. Consequently, since the tool is formed in a completely sealed structure, water is prevented from intruding thereinto. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a tool having buoyancy, and in particular, a forming groove is provided in a grip to form an air chamber inside the main body, and the forming groove and a driving body are combined to make the pressure inside the main body larger than the external atmospheric pressure. The present invention relates to a tool having buoyancy that prevents water from entering.

  Tool manufacturing technology such as spanner, screwdriver, socket wrench and hammer in Taiwan is highly regarded internationally because of its elaborate structure, durability and long life. From do-it-yourself to manufacturing and maintenance of various machines, Taiwan-made tools are said to be able to satisfy the needs of various users.

  As for the place and object of general tools, there are many factories built on land and manufacturing machines in factories. Since the tool is required to have a strong and long-lasting structure, the tool is usually made of a high-strength metal. Therefore, it can withstand the drag and impact generated during the work.

  However, when the place of use goes from underwater to underwater, a solid metal tool that is not hollow loses convenience and sometimes falls into an inconvenient situation. For example, in the maintenance of instruments in rivers, seas, aquaculture, ponds, sluices, machine repairs, ship repairs, failure treatments, emergency rescues, steel structures are heavy, Underwater pressure is applied, making it extremely difficult to use. Inadvertently dropping the tool to the bottom of the water often interrupts the work, and in the event of any inconvenience, the progress of maintenance is delayed or the timing of emergency repairs is lost. In addition, when water enters from the gap between the tools, the parts may rust.

Therefore, in order to solve the above problems, tools having buoyancy have been developed in the industry. In Patent Document 1 and Patent Document 2, the main body is a grip main body by plastic injection molding, the top of the grip main body is solid, has a fitting groove, and fits the shaft. The inside of the grip body forms an air chamber. The bottom of the grip body has a screw hole connected to the air chamber. The screw hole allows air to flow into the air chamber, and the air chamber is sealed with a stopper. Thereby, the air in the air chamber generates buoyancy and can float in water, which is convenient for various operations.
Taiwan Patent No. M261323 Utility Model Registration No. 3107574

  The grip body is processed by plastic injection molding to form an air chamber inside, but in the molding process, a hole is provided in one end of the grip body, and the grip body is formed by a method of thermoplastic hollow molding or hollow injection molding. A hollow air chamber is formed inside. In the prior art, a perforation is provided at the end of the grip body to form a spiral hole. The spiral hole is tightened with a spiral plug to keep the air chamber sealed. However, no matter how hard the spiral plug is tightened, water will enter from a slight gap on the spiral pattern. As the water pressure increases, the degree becomes significant. When the spiral plug and the spiral hole are repeatedly opened and closed, each spiral pattern is worn, gaps on the spiral pattern become larger, water penetrates further, and the sealing effect of the air chamber is lost, The body completely loses buoyancy.

  It is an object of the present invention to provide an improved structure for a tool having a buoyancy which improves the disadvantage of water intrusion due to an imperfect sealing structure, is completely liquid-tight, and has buoyancy.

In order to achieve the above-mentioned object, the present invention is a tool having buoyancy, and the tool having buoyancy according to the present invention includes a grip processed by plastic injection molding, a molding groove provided on the top of the grip, and a molding process. A hollow air chamber is formed inside the grip by a method of thermoplastic hollow molding or hollow injection molding through a molding groove. Since the air chamber is hollow and is connected to the molding groove, air is filled into the air chamber from the molding groove.
Further, in order to reinforce the buoyancy of the main body, an airtight air bag filled with nitrogen, helium, hydrogen, or the like whose specific gravity other than air is lighter than air and filled with the above gas is disposed in the air chamber.

  The drive body has a diameter slightly larger than the inner diameter of the molding groove, a joint is formed at the end, and a slip stopper is provided on the surface of the joint. In this embodiment, the anti-slip is a protrusion that is fitted to the inner wall of the forming groove and firmly connects the driving body to the grip.

  When the joint portion is fitted into the molding groove, the driving body and the grip are joined and integrated, and the joint portion seals air in the air chamber like a bottle stopper. Since the sealed air receives the pressure of the joint portion, the pressure in the air chamber becomes larger than the atmospheric pressure outside the main body.

  A hollow air chamber is formed inside the grip through the forming groove, and is coupled with the driving body to completely seal the grip. This eliminates a slight gap, preventing air from leaking to the outside and water from entering the air chamber.

  Since the pressure inside the air chamber is greater than the external atmospheric pressure, the air chamber can maintain the buoyancy of the main body without causing the water to enter the inside due to the internal pressure resisting the external water pressure during underwater work. .

  The tool having buoyancy according to the present invention has a hollow air chamber formed inside the grip and is in a completely sealed state, thus preventing water from entering the air chamber and having buoyancy. Can be demonstrated.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing a tool having buoyancy according to an embodiment of the present invention. FIG. 2 is a perspective view showing a tool having buoyancy according to an embodiment of the present invention. FIG. 3 is a cross-sectional view illustrating a tool having buoyancy according to an embodiment of the present invention.
As shown in FIGS. 1 to 3, the tool having buoyancy of the present invention is a driver in the first embodiment of the present invention. The main body 1 includes a grip 10 processed by plastic injection molding, a molding groove 11 in the grip axial direction provided at the top of the grip 10, and a thermoplastic hollow molding or hollow injection molding method via the molding groove 11 in the molding process. A hollow air chamber 12 formed inside the grip 10 is provided. Since the air chamber 12 is hollow and is connected to the forming groove 11, air is filled into the air chamber 12 from the forming groove 11.
In addition to air, filling the body with nitrogen, helium, hydrogen, or the like whose specific gravity is lighter than air will reinforce the buoyancy of the body, but FIG. 4 is a cross section showing a state in which the airbag 121 is disposed in the air chamber 12. In the figure, as shown in FIG. 4, the same effect can be obtained by arranging the airtight airbag 121 filled with the gas in the air chamber 12 to improve the waterproof effect. In short, the specific gravity of the entire tool body 1 including the hollow air chamber 12 may be lighter than the specific gravity of water.

  The main body 1 further includes a driving body 20, which is a shaft of a driver in the first embodiment of the present invention. The driving body 20 has a diameter slightly larger than the inner diameter of the molding groove 11, a joint portion 21 is formed at the end, and a non-slip 22 is provided on the surface of the joint portion 21. In the present embodiment, the anti-slip 22 is a protrusion 221 that is fitted to the inner wall of the molding groove 11 and firmly connects the driving body 20 to the grip 10. When the joint portion 21 is fitted into the molding groove 11, the driving body 20 and the grip 10 are combined and integrated, and the joint portion 21 seals air in the air chamber 12 like a bottle stopper. Since the sealed air receives the pressure of the joint portion 21, the pressure in the air chamber 12 becomes larger than the atmospheric pressure outside the main body 1.

  FIG. 5 is a perspective view showing a state in which a tool having buoyancy according to an embodiment of the present invention floats in water. When an appropriate amount of air or a gas whose specific gravity is slightly lighter than air is filled in the air chamber 12, the specific gravity of the entire tool body 1 including the air chamber 12 becomes lighter than the specific gravity of water, as shown in FIG. Because it floats in the water, it is useful for operations such as underwater machine maintenance and emergency ship repairs.

  In the embodiment of the present invention, unlike the prior art, it is not necessary to provide a spiral hole in the main body 1, and the spiral hole is replaced by the forming groove 11 in the grip axis direction of the drive body 20. A hollow air chamber 12 is formed inside the grip 10 by the method of thermoplastic hollow molding or hollow injection molding through the molding groove 11, and is coupled with the driving body 20 so that the grip 10 is completely sealed. This eliminates a slight gap, preventing air from leaking to the outside and water from entering the air chamber 12.

  Since the pressure inside the main body 1 is larger than the external atmospheric pressure, the air chamber 12 keeps the buoyancy of the main body 1 without causing the internal pressure to resist the external water pressure and causing water to enter inside during underwater work. be able to.

  6 to 9 are plan views showing different modes of the slip stopper according to the present invention. As shown in FIG. 6, the non-slip 22 is a slanted block 222 arranged in the molding groove 11 as shown in FIG. 6, a stopper 223 as shown in FIG. 7, or as shown in FIG. In addition, there are two screws 224 or a C-shaped claw 225 as shown in FIG. 9, but all of them are intended to improve the tightness of the coupling of the driving body 20 to the grip 10.

  FIG. 10 is an exploded perspective view showing a tool having buoyancy according to the second embodiment of the present invention. FIG. 11 is a perspective view showing a tool having buoyancy according to the second embodiment of the present invention. FIG. 12 is a sectional view showing a tool having buoyancy according to the second embodiment of the present invention. In the second embodiment, description of the same parts as in the first embodiment is omitted, and only different parts are described below. As shown to FIGS. 10-12, the grip 10 has the shaping | molding groove | channel 11 which arrange | positions the drive bodies 20 and 30 at both ends, respectively. In the second embodiment, the drive body 20 is a spanner, the drive body 30 is a spectacle wrench, and the main body 1 is a combination wrench. Because it can float underwater, it is convenient for work using a spanner or wrench.

  FIG. 13 is a perspective view showing a tool having buoyancy according to the third embodiment of the present invention. FIG. 14 is a plan view showing a tool having buoyancy according to the third embodiment of the present invention. FIG. 15 is a perspective view showing a tool having buoyancy according to the fourth embodiment of the present invention. FIG. 16 is a sectional view showing a tool having buoyancy according to a fourth embodiment of the present invention. As shown in FIGS. 13 to 16, in the third embodiment of the present invention, the driving body 20 is a adjustable wrench, and in the fourth embodiment, 20 is a D-type wrench. Different driving bodies can be used to meet various needs in underwater work.

  Although preferred embodiments of the present invention have been disclosed as described above, they are not intended to limit the present invention in any way, and anyone skilled in the art is within the spirit and scope of the present invention. Various changes and modifications can be made. Therefore, the scope of protection of the present invention is based on the contents specified in the claims.

It is a disassembled perspective view which shows the tool which has buoyancy by embodiment of this invention. It is a perspective view which shows the tool which has buoyancy by embodiment of this invention. It is sectional drawing which shows the tool which has buoyancy by embodiment of this invention. It is sectional drawing which shows the state by which the airbag is arrange | positioned in the air chamber. It is a perspective view which shows the state which the tool which has buoyancy floated in water. It is a top view which shows the aspect from which the slip prevention of this invention differs. It is a top view which shows the aspect from which the slip prevention of this invention differs. It is a top view which shows the aspect from which the slip prevention of this invention differs. It is a top view which shows the aspect from which the slip prevention of this invention differs. It is a disassembled perspective view which shows the tool which has buoyancy by 2nd embodiment of this invention. It is a perspective view which shows the tool which has buoyancy by 2nd embodiment of this invention. It is sectional drawing which shows the tool which has buoyancy by 2nd embodiment of this invention. It is a perspective view which shows the tool which has buoyancy by 3rd embodiment of this invention. It is a top view which shows the tool which has buoyancy by 3rd embodiment of this invention. It is a perspective view which shows the tool which has a buoyancy by 4th embodiment of this invention. It is sectional drawing which shows the tool which has buoyancy by 4th embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 10 Grip 11 Molding groove 12 Air chamber 20 Drive body 21 Joint part 22 Non-slip 30 Drive body 121 Air bag 221 Protrusion 222 Diagonal block 223 Plug 224 Screw 225 C type claw

Claims (6)

A buoyant tool comprising a grip and a drive,
The grip is plastic injection molded, and has a molding groove at least one end of the grip in a molding process, and a hollow air chamber is formed inside the grip through the molding groove.
One end portion of the driving body is fitted into the grip from the molding groove, and the driving body and the grip are combined and integrated, and the pressure in the air chamber becomes larger than the atmospheric pressure outside the main body. The buoyancy tool is characterized in that the main body has buoyancy, the inside of the main body is in a completely sealed state, and does not enter water, thereby improving the convenience of work.   The tool having a buoyancy according to claim 1, wherein the driving body has a diameter slightly larger than an inner diameter of the forming groove.   At least one anti-slip is provided at one end where the drive body and the grip are coupled, and the anti-slip is selected from a protrusion, a slant block, a plug, a screw, and a C-type claw. 3. The tool having buoyancy according to claim 1, wherein tightness of coupling between the driving body and the grip is improved.   The tool having buoyancy according to claim 1 or 2, wherein the main body has the forming groove at both ends.   The buoyancy tool according to claim 1, wherein the air chamber is filled with a gas having a specific gravity lower than that of air.   The buoyancy tool according to claim 1, wherein an air bag is disposed in the air chamber.

Images