JP2009113131A - Tool with soft touch elastic layer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool with a soft touch elastic layer in which the elastic force and the restoring property of a protective layer are improved to soften the tactile impression of a worker without changing the material, surface shape, and hardness of the protective layer formed of an elastic body on the surface of an outer shell part assembly. <P>SOLUTION: In the handle for a portable power tool, a window part 15 is formed in the outer shell part base a of the outer shell of a tool body having an electromechanical mechanism for drilling and vibrating, and the protective layer b formed of the elastic body having a vibration damping function is integrally incorporated therein to form an outer shell part assembly A. A hollow part is formed between the outer shell part base a of the outer shell part assembly A and the inside of the elastic body with projections interposed therebetween to form a damping/restoring layer. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a tool with a soft touch elastic layer having an outer shell assembly in which a protective layer made of an elastic body is integrally incorporated in a surface covering of various tools having mechanical electric mechanisms such as drilling and vibration.

  In a portable power tool having an outer shell assembly that is provided with a protective layer made of an elastic body integrated on this type of surface, the operator is protected from vibration from the power source and reaction during actual operation. At the same time, the holding portion is made difficult to slip to improve operability.

In addition, the portable power tool having a protective layer made of an elastic body is configured so as to protect the main body from the mating member when placed on the mating member and at the same time not damage the mating member. (For example, see Patent Documents 1, 2, and 3.)
JP 2007-90505 A JP 2004-100287 A JP-A-8-25249

  Thus, the protective layer made of an elastic body on the outer shell assembly needs to ensure not only a vibration reducing function but also wear resistance and tear strength. Generally, when the hardness of an elastic body is lowered, the elasticity is improved but the strength is lowered. Therefore, it has been difficult to reduce the hardness of the elastic body itself to make a soft touch. In addition, forming protrusions, dents, etc. on the surface of the protective layer to improve resilience is a practical problem for tools such as dirt and dust adhering to actual operation and reduced wear resistance. was there.

  The present invention has been made in view of the above problems, and the object thereof is the above without changing the material and surface shape of the protective layer made of an elastic body on the surface of the outer shell assembly and the hardness of the elastic body. An object of the present invention is to provide a tool with a soft touch elastic layer in which the elastic force and the restoring property of a protective layer are improved to improve the tactile sensation of an operator to achieve soft touch.

  The present invention can solve the above problems by providing the following configuration.

  (1) A window is provided on the outer shell base of the tool main body provided with a mechanical electric mechanism such as drilling and vibration, and a protective layer made of an elastic body having a vibration-proof cushioning function is integrated and provided. A handle for a portable power tool as an outer shell assembly, wherein a buffer portion is provided between the outer shell base of the outer shell assembly and the inner side of the elastic body to provide a buffer. A tool with a soft touch elastic layer, characterized by comprising a layer.

  (2) In the outer shell assembly according to (1), a rib-like projection is formed on the elastic body in the direction of pulling out the mold, or a rib-like projection is formed on the outer shell base to form a cavity portion. A tool with a soft touch elastic layer, wherein the buffer restoring layer is integrally formed.

  (3) In the outer shell assembly according to (1), after the integral molding with the elastic body as the outer shell base, a brush-like protrusion is formed on the lid-like member that closes the window of the outer shell base. A tool with a soft touch elastic layer, characterized in that a buffer restoring layer in the cavity is obtained.

  (4) In the outer shell assembly according to (1), after integrally forming the outer shell base and the elastic body, between the lid-like member that closes the window of the outer shell base and the back side of the elastic body. A tool with a soft touch elastic layer, characterized in that it is formed as a buffer restoring layer in the cavity by interposing an extremely soft member such as an elastomer which is easily deformed.

  According to the present invention, the outer shell assembly is divided into the outer shell base corresponding to the outer shell and the elastic body incorporated therein, and the material, surface shape and hardness of the protective layer made of the elastic body are kept as they are. It is possible to provide a tool with a soft touch feeling by improving elasticity and restoration property.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to examples.

  An embodiment of the present invention will be described below with reference to the drawings.

  Reference numeral 1 denotes a tool body, and in the figure, a chuck 3 to which a drill 2 can be attached and detached is provided. An electric part 4 and a power source part 5 are built in, a handle part 6 and an operation switch 7 are provided. The shell base body a is formed of a hard resin such as an aluminum die cast or a hard synthetic resin, for example, a polycarbonate or a polyamide resin of nylon resin (registered trademark), and an elastic protective layer b is formed on the entire or part of its outer surface. However, the hollow portion 10 is formed through a protrusion having a desired shape, and is integrated as a buffer restoring layer to form the outer shell portion assembly A.

  For example, as shown in FIG. 1B, the outer shell assembly A includes, for example, a front part (I) of the electric unit 4 that can be assembled, a handle front part (II) including the power supply unit 5, and the handle part 6. The handle rear part (III) is divided into three parts and is assembled together with the internal mechanism of the tool body 1.

  The handle rear portion (III) shown in FIG. 2 has a recess 8 formed in the center, and a protective layer b made of an elastic body integral with the hard resin constituting the outer shell base a forms the cavity 10 on the outer periphery. And laminated as a buffer restoring layer. The elastic protective layer b is made of soft synthetic resin, soft rubber, or the like, and the cross-section AA line has different configurations as shown in FIGS. 3 (a), 3 (b), and 3 (c). Can be provided.

  (A) can form a large number of cavities 10 by projecting rib-shaped protrusions 9 protruding in a rib shape inside the protective layer b of the elastic body in parallel in the drawing direction of the mold, and (b) The delicate brush-like projections 9a are brought into close contact with each other, and a large number of hollow portions 10a are formed by the brush-like projections 9a. (C) forms a sealed hollow portion 10b by enclosing an extremely soft member 9b such as an elastomer.

  In any of the configurations, the recess 8 coincides with the window portion 15 of the outer shell base body a, and a plate-like lid-like member 11 is fitted and fixed to the innermost portion by a snap fit 12. Cavities 10, 10a and 10b having different structures are formed between the elastic protective layer b. Further, as shown in FIG. 4, a large number of separated solid cavities 10c are connected to the outer shell base body a and the protective layer b of the elastic body.

  The brush-like protrusion 9a shown in FIG. 3B is preferably integrally formed in a flock shape on the lid-like member 11 as shown in FIG. 4, but is not necessarily limited thereto.

  Further, the adjacent front part (I), handle front part (II), and handle rear part (III) are simply provided with a protrusion 13 and an engaging groove 14 for the protrusion 13 on the joining side, as shown in FIG. Can be assembled into.

  According to the present invention, mechanical vibrations of tools such as drilling and nailing are strongly transmitted to the handle portion 6 and are transmitted to the right or left hand during operation gripping. The impact can be remarkably relieved by the elastic protective layer b having the hollow portion 10 of the structure, and the possibility of hindering the work of the operator can be sufficiently avoided.

(A) is a side view which shows one Example of the tool with a soft touch elastic layer of this invention, (b) is a side view which divides (a) into 3 parts Front view in the direction of arrow II-II in FIG. (A), (b), (c) is sectional drawing which shows three different examples of the sectional view on the AA line of FIG. BB sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tool main body 2 Drill 3 Chuck 4 Electric part 5 Power supply part 6 Handle part 7 Switch for operation 8 Recessed part 9 Rib-like protrusion part 9a Brush-like protrusion part 9b Extremely flexible member 10, 10a, 10b, 10c Cavity part 11 Cover-like member Body 12 Snap fit 13 Projection 14 Engaging groove 15 Window part A Outer shell part assembly a Outer shell base body b Protective layer of elastic body

Claims (4)

  A shell provided with a protective layer made of an elastic body with a vibration-proof cushioning function by providing a window on the outer shell base of the outer shell of the tool body equipped with mechanical electric mechanisms such as drilling and vibration A handle for a portable power tool as a part assembly, wherein a hollow part with a protrusion or the like interposed between an outer shell base and an elastic body inside the outer shell part assembly is provided as a buffer restoring layer. A tool with a soft touch elastic layer.   2. The outer shell assembly according to claim 1, wherein a rib-like protrusion is formed on the elastic body in the direction of pulling out the mold, or a rib-like protrusion is formed on the outer shell base so as to provide a buffer cushion restoring layer. A tool with a soft touch elastic layer, which is formed by integrally molding the tool.   2. The outer shell assembly according to claim 1, wherein after the integral molding with the elastic body as the outer shell base, a brush-like protrusion is formed on the lid-like member that closes the window of the outer shell base. A tool with a soft touch elastic layer, characterized in that a buffer restoring layer is obtained.   2. The outer shell assembly according to claim 1, wherein after the outer shell base and the elastic body are integrally formed, deformation of an elastomer or the like is performed between the lid-like member that closes the window of the outer shell base and the back side of the elastic body. A tool with a soft touch elastic layer, characterized in that it is formed as a buffer restoring layer in a cavity by interposing an easy extremely soft member.

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