KR20170064238A

KR20170064238A - Shock absorbing grip for power tool

Info

Publication number: KR20170064238A
Application number: KR1020150169757A
Authority: KR
Inventors: 김근영; 박준하
Original assignee: 주식회사 아임삭
Priority date: 2015-12-01
Filing date: 2015-12-01
Publication date: 2017-06-09

Abstract

The present invention relates to a grip provided on a handle of a power tool, wherein a surface of the grip is formed with a plurality of protrusions and protrusion rows projecting in a downward inclined direction with respect to a main axis direction of the power tool, And a plurality of protrusions and protrusion projections formed on the surface of the grip downwardly inclinedly elastically support the fingers of the operator holding the handle of the power tool so that the power tool is operated It is possible to prevent the hands from becoming slippery by absorbing and mitigating the impact and the feeling of hitting.

Description

{Shock absorbing grip for power tool}

The present invention relates to a grip for a power tool, and more particularly, to a grip for a power tool, which relieves an operator's hand from being easily tired due to vibration or impact generated when the power tool is operated, To a shock absorbing grip for a power tool.

The power tool is equipped with a built-in battery or a motor driven by an externally supplied power source, and a tool mounting socket extending from the rotating shaft of the motor is equipped with various tools such as a drill, a screwdriver, a grinder or a circular saw Structure. Since the power tool operates the tool by the power of the motor, the working efficiency is far superior to that of the manual tool. Therefore, in recent years, electric tools have been purchased and used even in ordinary households.

Although there are many advantages of power tools, there is a disadvantage in that vibrations, shocks, or hits are constantly generated by a rotating motor and a tool during operation, and the impact is transmitted to the hands of the user holding the power tool. If hands are tired, it is necessary to take a break from time to time, so if the shock of the power tool can not be effectively mitigated, it leads to a decrease in working efficiency. In addition, if the power to hold the power tool is low, the risk of dropping the power tool from the hand increases, which is also related to the safety problem. In the occupation group using the power tool for a long time, it causes a chronic disease in the muscles and joints of the hand do. Because of this, much effort is being devoted to ergonomic design that not only improves the performance of the power tool, but also allows the operator to use it comfortably.

Currently, the handles of most power tools have a grip made of soft and resilient materials such as synthetic rubber, which is more soft than the case of the main body, to mitigate the hand fatigue of the worker and improve the grip feeling. An example of such a grip for a power tool is disclosed in Patent Document 1, and a plurality of geometric lines concavely formed on the surface of the grip are formed to improve sensitivity to feel that the finger grips the grip.

However, most of the power tool grips applied or introduced to date have been used to reduce the vibration and impact by using the elasticity of the material itself, and to improve the grip feeling. Even if a concave line is formed on the grip surface, There is a problem that it is difficult to achieve the purpose of improving the grip sensitivity when the gloves are worn in multiple layers in order to prevent the hands from getting tired.

Korean Public Patent No. 2012-0083014 (published on July 25, 2012)

The present invention relates to a power tool capable of improving a grip of a rubber material provided on a handle of a power tool to suppress an increase in fatigue of a hand caused by impact and vibration generated when a power tool is operated, The present invention has been made to solve the above problems.

The present invention relates to a grip provided on a handle of a power tool, wherein a surface of the grip is formed with a plurality of protrusive and convex rows projecting in a downward inclined direction with respect to a main axis direction of the power tool, And a shock absorbing grip for a power tool.

Here, the plurality of concave-convex ridges are formed in a region of the fingers holding the handle, in which the stop, the finger, and the back are located.

Further, the plurality of concave-convex ridges may be further formed in an area of the fingers holding the handle, the area where the thumb and the index finger enclose.

In one embodiment of the present invention, the projections and protrusions are protruded to a height of 1.5 to 2.6 mm from the surface of the grip.

The projections and protrusions are spaced apart at intervals of 0.7 to 2.0 mm.

The concavity and convexity row is formed to be inclined downward at an angle of 35 to 50 degrees with respect to the main axis direction of the power tool.

According to the impact-relieving grip for a power tool of the present invention having the above-described configuration, since the plurality of concave-convex projection rows formed on the surface of the grip downwardly inclinedly elastically support the finger of the operator holding the handle of the power tool, It is possible to restrain the hand from becoming slippery by absorbing or alleviating the impact and the feeling of hitting.

Further, the plurality of concave-convex ridges formed on the surface of the grip also improve grip efficiency and gripping feel of the gripped hand, thereby improving work efficiency.

In addition, when a power tool having the shock-absorbing grip according to the present invention is used for a long period of time, an ergonomic shape that can be used comfortably is realized naturally by abrasion or deformation of the projections and recesses corresponding to the shape of the hand of the user.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a use of a shock absorbing grip for a power tool according to the present invention. Fig.
Fig. 2 is an enlarged view of a structure of a row of protrusions and protrusions formed on a shock absorbing grip for the power tool of Fig. 1; Fig.
3 is a view showing another use example in which the shock absorbing grip for a power tool of the present invention is applied.
Fig. 4 is a view showing an embodiment in which recesses and protrusions are formed in two regions of an impact-reducing grip for a power tool; Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In describing the embodiments of the present invention, a description of well-known structures that can be easily understood by those skilled in the art will be omitted so as not to obscure the gist of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a use of a shock absorbing grip for a power tool according to the present invention.

The present invention relates to a grip 10 provided on a handle 2 of a power tool 1. The present invention relates to a grip 10 provided on a grip 2 of a power tool 1, A plurality of protrusions and protrusions 100 protruding in a downward inclined direction are formed so as to be spaced apart from each other. Here, the protrusion / protrusion row 100 means that the protrusion having a predetermined length is formed to be long as it surrounds a certain area of the grip 10. The grip 10 is made of a rubber material having flexibility, softness, and elasticity, and thus the projected protrusion row 100 can be elastically deformed by a force applied from the outside.

The main axis direction X of the power tool 1 means the rotational axis direction of the tool driven by the motor and each of the concave and convex protrusion rows 100 is formed with respect to the main axis direction X And is protruded in a downward inclined direction. The reason why the row of recessed protrusions 100 is laid down as described above is to allow the user to press the recessed protrusion row 100 naturally when the user grips the handle 2 of the power tool 1, The uneven protrusion row 100 with elasticity absorbs and mitigates shock and impact when the power tool 1 is operated, thereby helping the user's hand not to be easily tired.

The area where the plurality of concave and convex protrusion rows 100 are formed is a region in which the stop 2, the ring finger 2, and the bezel 3, which are gripped by the grip 2 of the user holding the handle 2 of the power tool 1, .

2 is an enlarged view of the structure of the protrusion / protrusion row 100 formed in the shock absorbing grip 10 for a power tool of FIG.

The height h, the distance d and the downward angle? Of the protrusion / protrusion row 100 formed on the grip 10 are determined by considering the elasticity of the rubber material of the grip 10, It is difficult to uniquely determine such a design value because it relates to the emotion felt by the user when the handle 2 is held.

However, when various design specifications are tested in the process of developing the shock absorbing grip 10 for a power tool of the present invention, the protrusion height h of the protrusion / protrusion row 100 is 1.5 to 2.6 mm from the surface of the grip 10 The distance d between the concave and convex protrusion rows 100 is set to a distance of about 0.7 to 2.0 mm and the downward angle a of the concave and convex protrusion row 100 is set to be the main axis of the power tool 1 ) Direction to have an angle of 35 to 50 degrees, it was confirmed that the effect of the impact reduction can be sufficiently felt while holding the handle (2) with the most comfortable feeling.

The shock absorbing grip 10 for a power tool of the present invention can be applied to various types of power tools 1, and as shown in FIG. 3, the power tool 1 with the grip 2 can be used as a rechargeable portable power tool The tool 1 can be widely applied regardless of its type.

4 is a view showing an embodiment in which the protrusion / protrusion rows 100 are formed in two regions of the shock absorbing grip 10 for a power tool of the present invention. One area is a region in which the stop 2, the finger 1, and the finger 2 are held to hold the handle 2 as described above. In addition, a region of the fingers holding the handle 2, which surrounds the thumb and index finger, (100) can be further formed.

The part of the hand where the thumb and the index finger meet is called a god (cow), which is a part where you feel a lot of fatigue and pain when you hold something with your hand for a long time. Therefore, the shock-absorbing grip 10 for a power tool according to the present invention can more effectively reduce the fatigue of the hand by forming a plurality of concave-convex protrusion rows 100 in the area where the thumb and the index finger surround.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be possible. Accordingly, the scope of the present invention will be determined by the description of the claims and their equivalents.

1: Power tool 2: Handle
10: Grip 100: Uneven protrusion heat
X: Main axis direction of power tool
h: Height of the protrusion column
d: spacing between rows of protrusions
α: downward angle of the convex-concave row

Claims

In a grip provided on a handle of a power tool,
And a plurality of protrusions and protrusions protruding in a downward inclined direction with respect to a main axis direction of the power tool are formed continuously on the surface of the grip so as to be spaced apart from each other.

The method according to claim 1,
Wherein the plurality of protrusions and protrusions are formed in a region of the fingers holding the handle, the stop, the finger, and the base.

3. The method of claim 2,
Wherein the plurality of protrusions and protrusions are further formed in a region of the fingers gripping the handle, the region surrounding the thumb and the index finger.

The method according to claim 1,
And the projections and protrusions are protruded to a height of 1.5 to 2.6 mm from the surface of the grip.

The method according to claim 1,
And the protrusions and protrusions are spaced apart at intervals of 0.7 to 2.0 mm.

The method according to claim 1,
Wherein the concave-convex projection row is inclined downward at an angle of 35 to 50 degrees with respect to a main axis direction of the power tool.