JP2007307626A - Power tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power tool with excellent operability with which a worker can always grip a grip under the optimum condition by adjusting a gripping range in a longitudinal direction of a handle part according to the size of a hand of the worker. <P>SOLUTION: The power tool 1 comprises a handle part 2B integrally extending from a shell part 2A of a housing 2 mounting a motor as a drive source inside. The tool comprises an adjuster 5 capable of moving the handle part 2B in a longitudinal direction, so as to adjust a longitudinal range of a grip 2a of the handle part 2B by the adjuster 5. A screw shaft along the longitudinal direction is rotatably housed in the handle part 2B as a moving mechanism of the adjuster 5. A slider is screwed in a screw shaft, and a part of the slider is engaged with the adjuster 5. In this constitution, a dial 12 integrated with the screw shaft is rotated to move the adjuster 5 along the screw shaft, so as to move the adjuster 5 in the longitudinal direction of the handle part 2B. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electric power tool capable of adjusting a grip range in a longitudinal direction of a handle portion.

  For example, an electric power tool such as an impact tool is provided with a handle portion that integrally extends from a body portion of a housing containing a motor as a driving source, and an operator performs a required work by holding the handle portion with one hand. .

  By the way, as for the grip provided in the handle part of such an electric power tool, various devices have been made in the shape, material, and the like so that the operator can easily grip it. For example, it has been devised so that the grip can be formed into a curved surface that can be easily adhered to the hand, or a soft material such as an elastomer is provided on the surface of the grip so that the operator can comfortably grip the grip.

  However, since the shape and dimensions of the conventional grip are constant, it is difficult for all workers having different hand sizes to always hold the grip properly.

In view of this, an electric tool has been proposed in which the thickness of the grip can be changed by allowing a removable outer grip to be attached to the outer periphery of the grip of the handle portion (see Patent Document 1).
JP 2001-310273 A

  However, in the electric tool according to the above proposal, although the thickness of the grip can be changed according to the size of the operator's hand, the dimension in the longitudinal direction of the grip cannot be adjusted. However, there is a problem that the grip cannot always be gripped properly and the work cannot be comfortably performed. In general, the grip part in the longitudinal direction of the handle part is longer than the average size of an adult's hand width of 79.2 mm ("Human Dimension Data for Design" 1996, edited by Biotechnology Institute of Technology). There is a problem that the operator's hand holding the part is easily slipped in the longitudinal direction of the grip and is difficult to work. In addition, there is a problem that it is difficult for a worker whose hand width is shorter than the average dimension (for example, a worker whose hand width is 70 mm (5th percentile)) to grip the grip.

  In addition, since it is necessary to prepare a plurality of sizes of detachable outer grips according to the size of the operator's hand in advance, there is an unavoidable increase in cost, and the outer grip is separable so There is also a problem that it is easily lost.

  The present invention has been made in view of the above problems, and the object of the present invention is to adjust the grip range in the longitudinal direction of the handle portion in accordance with the size of the operator's hand so that the grip is always in an optimum state. It is an object of the present invention to provide an electric tool with good operability that can grip a tool.

  To achieve the above object, according to the first aspect of the present invention, there is provided a power tool including a handle portion integrally extending from a body portion of a housing having a built-in motor as a driving source, and is movable in a longitudinal direction of the handle portion. The adjuster is provided, and the longitudinal range of the grip of the handle portion can be adjusted by the adjuster.

  According to a second aspect of the present invention, in the first aspect of the invention, a screw shaft along the longitudinal direction is rotatably accommodated in the handle portion, and a slider is screwed onto the screw shaft, and a part of the slider is moved. The adjuster is moved in the longitudinal direction of the handle portion by engaging with the adjuster and rotating the dial integral with the screw shaft to move the adjuster along the screw shaft.

  According to a third aspect of the present invention, there is provided a power tool including a handle portion integrally extending from a body portion of a housing incorporating a motor as a drive source, and an adjuster for adjusting a longitudinal range of a grip of the handle portion. It is characterized by being detachable from the handle portion.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the adjuster is configured in a ring shape so as to cover the outer periphery of the handle portion from the outside.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, characterized in that a soft layer is formed on the surface of the adjuster.

  According to the first aspect of the present invention, the longitudinal range of the grip of the handle portion is optimally adjusted according to the size (hand width) of the operator by moving the adjuster along the outer periphery of the handle portion. Therefore, the operator can always hold the grip in an optimum state, and the workability is improved and the operability of the electric tool is improved.

  According to the second aspect of the present invention, it is possible to adjust the longitudinal range of the grip of the handle portion by moving the adjuster in the longitudinal direction along the outer periphery of the handle portion by rotating the dial.

  According to the third aspect of the present invention, it is possible to optimally adjust the longitudinal range of the grip of the handle portion by preparing a plurality of adjusters having different heights and replacing the adjusters.

  According to the invention described in claim 4, the ring-shaped adjuster is moved in the longitudinal direction along the outer periphery of the handle portion, or is exchanged with an adjuster having a different height, thereby operating the longitudinal range of the grip of the handle portion. Can be optimally adjusted according to the size (hand width) of a person's hand.

  According to the invention of claim 5, since the soft layer is formed on the surface of the adjuster, the soft layer of the adjuster hits the operator's hand so that the operator does not feel uncomfortable in the hand during the operation. The adhesion of the hand to the adjuster is also improved.

[First invention]
Embodiments of the first invention will be described below with reference to the accompanying drawings.

  1 is a left side view of the electric tool according to the first invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, FIG. 3 is a cross-sectional view taken along line BB in FIG. 5 and 6 are exploded perspective views of the adjuster portion of the power tool, FIG. 7 is a right side view of the power tool showing a gripping state when the grip range in the longitudinal direction is widely adjusted, and FIG. 9 is a left side view of the electric tool showing a state in which the grip range in the direction is narrowly adjusted, and FIG. 9 is a right side view of the electric tool showing a grip state when the grip range in the longitudinal direction is adjusted to be narrow.

  The electric power tool 1 according to the present embodiment performs a work such as screw tightening by intermittently applying a striking force to the tip tool while rotating a tip tool by using a motor as a drive source to generate a rotating striking force. The body 2A of the housing 2 incorporates a motor (not shown) as a drive source. And the handle | steering-wheel part 2B is integrally extended from 2 A of trunk | drum parts of the housing 2, and the housing 2 has comprised the T shape by the side view as a whole.

  A switch 3 is provided on the upper front surface of the handle portion 2B of the housing 2, and a battery pack in which a plurality of batteries (not shown) as a power source are loaded on the end portion (lower end in FIG. 1) of the handle portion 2B. 4 is provided.

  Thus, in the electric power tool 1, the operator holds a grip 2a of the handle portion 2B with one hand as shown in FIG. In the present embodiment, an adjuster 5 that can move in the length direction of the grip 2a is provided on the outer periphery of the handle portion 2B. With this adjuster 5, the longitudinal range of the grip 2a of the handle portion 2B is provided. Is optimally adjusted according to the size (hand width) of the operator's hand.

  Here, details of the adjuster 5 and its moving mechanism will be described with reference to FIGS.

  The adjuster 5 is configured in a ring shape so as to cover the outer periphery of the lower portion of the handle portion 2B of the housing 2 from the outside. As shown in FIG. 3, a soft layer is formed on the surface (the portion touched by the operator's hand). 6 is formed. Here, as shown in FIG. 2 and FIGS. 4 to 6, the adjuster 5 is formed in a ring shape by joining and integrating the half ring-shaped divided pieces 5 </ b> A and 5 </ b> B divided into the left and right parts with two screws 7. A notch 5a having a concave curved surface is formed on the left side, and a rectangular opening 5b is formed in the notch 5a.

  On the other hand, as shown in FIG. 3, in the handle portion 2B of the housing 2, a screw shaft 8 along the longitudinal direction (vertical direction in FIG. 3) is rotatably supported by the upper and lower bearing portions 9 and 10 and stored. A plate-like slider 11 is screwed onto the screw shaft 8. A large-diameter dial 12 is integrally formed at the end of the screw shaft 8 (the lower end in FIG. 3). A part of the dial 12 is shown in FIGS. In addition, the adjuster 5 is exposed to the outside through an opening 5b that opens in a notch 5a formed on the left side of the adjuster 5.

  Incidentally, as shown in FIG. 5, a rectangular opening 2b is formed in the lower front surface of the handle 2B of the housing 2, and the tip of the slider 11 projects forward from the opening 2b. Yes. As shown in FIG. 3, the leading end of the slider 11 is engaged with an engaging groove 5 c formed in a part of the inner peripheral portion of the adjuster 5.

  Thus, in the electric power tool 1 according to the present embodiment, as described above, the adjuster 5 is moved along the outer periphery of the handle part 2B of the housing 2 to operate the longitudinal range of the grip 2a of the handle part 2B. Can be optimally adjusted according to the size (hand width) of a person's hand.

  That is, if the dial 12 exposed from the opening 5b formed in the notch 5a of the adjuster 5 is turned with a finger, the screw shaft 8 shown in FIG. Moves along the longitudinal direction of the handle portion 2B (vertical direction in FIG. 3). Then, since the adjuster 5 that engages with the tip of the slider 11 moves in the longitudinal direction along the outer periphery of the handle portion 2B, the longitudinal direction of the grip 2a that is a portion above the adjuster 5 on the outer periphery of the handle portion 2B. The range is adjusted.

  Therefore, as shown in FIG. 7, when an operator with a large hand width W1 grips the handle portion 2B of the electric power tool 1 to perform the work, the adjuster 5 is moved to the lowermost end portion of the handle portion 2B. If the longitudinal direction range of the grip 2a is widened, the operator can reliably grip the grip 2a and perform a required work.

  Also, as shown in FIG. 9, when an operator with a small hand width W2 (<W1) grips the handle portion 2B of the electric power tool 1 to perform work, the dial 12 is rotated as described above. When the adjuster 5 is moved upward along the handle portion 2B, the longitudinal range of the grip 2a of the handle portion 2B is narrowly adjusted as shown in FIG. For this reason, as shown in FIG. 9, when the operator grips the grip 2a of the handle portion 2B, a large gap does not occur between the hand and the adjuster 5, and the hand follows the grip 2a during the work. Therefore, the operability of the electric power tool 1 can be improved.

  As described above, according to the electric power tool 1 according to the present embodiment, the longitudinal direction range of the grip 2a of the handle portion 2B can be reduced by moving the adjuster 5 along the outer periphery of the handle portion 2B of the housing 2. Since it can be optimally adjusted according to the size (hand width) of the hand, the operator can always grip the grip 2a in an optimal state, and the workability is improved and the power tool 1 Operability is improved.

  Further, since the adjuster 5 cannot be separated from the handle portion 2B and removed, there is no problem that the adjuster 5 is lost at a work place or the like.

  Further, since the soft layer 6 is formed on the surface of the adjuster 5, the soft layer 6 of the adjuster 5 hits the operator's hand so that the operator does not feel a sense of incongruity during the operation. Adhesion to can also be improved.

[Second invention]
Next, an embodiment of the second invention will be described with reference to FIGS.

  10 is a perspective view of the adjuster portion of the electric power tool according to the second invention, and FIG. 11 is an exploded perspective view of the adjuster portion of the electric power tool. In these drawings, the same elements as those shown in FIGS. Are denoted by the same reference numerals, and the repetitive description thereof will be omitted.

  In the first aspect of the invention, by operating the dial 12 and moving the adjuster 5 along the handle portion 2B, the longitudinal range of the grip 2a of the handle portion 2B is set according to the size (hand width) of the operator's hand. However, in the second aspect of the invention, a plurality of adjusters 5 having different heights that can be attached to and detached from the handle portion 2B are prepared in advance, and the handle portion can be replaced by replacing the adjusters 5. The longitudinal range of the 2B grip 2a is optimally adjusted.

  Here, as shown in FIG. 11, the adjuster 5 is configured in a ring shape by joining and integrating the half ring-shaped split pieces 5 </ b> A and 5 </ b> B that are split into left and right with two screws 7. When attaching to the handle portion 2B, the two split pieces 5A and 5B are fitted into the handle portion 5B so as to cover the lower outer periphery of the handle portion 5B, and both are joined and integrated with two screws 7. When the adjuster 5 is removed from the handle portion 2B and replaced with another one, if the screw 7 is loosened and removed, the adjuster 5 is divided into two half-ring-shaped split pieces 5A and 5B. It can be easily removed from the handle portion 2B. Although not shown, a soft layer is formed on the surface of the adjuster 5 also in the present embodiment.

  Thus, according to the present invention, it is possible to optimally adjust the longitudinal range of the grip 2a of the handle portion 2B by preparing a plurality of adjusters 5 having different heights and replacing the adjusters 5. Similarly to the first invention, the operator can always hold the grip 2a in an optimal state, and the workability is improved and the operability of the electric tool is improved.

  By the way, according to the embodiment of the first invention, it is necessary to provide a slight gap between the adjuster 5 and the grip 2a of the handle portion 2B so that a finger can be caught in the gap. There is sex. Further, when the adjuster 5 is removed in order to make the longitudinal range of the grip 2a longer, the slider 11 protrudes from the surface of the grip 2a. If the grip 2a is gripped for a long time, the hand may be painful. is there.

  However, in the embodiment of the second invention, the grip 2a is formed in a tapered shape so that the outer diameter increases as it goes upward, and the adjuster 5 is attached to the tapered portion of the grip 2a with a tightening margin. . For this reason, there is no gap between the adjuster 5 and the grip 2a, and the adjuster 5 is not displaced upward. Even when the adjuster 5 is removed, the grip 2a can be gripped comfortably because there is nothing protruding from the grip 2a.

It is a left view of the electric tool which concerns on 1st invention. It is the sectional view on the AA line of FIG. FIG. 3 is a sectional view taken along line BB in FIG. 2. It is a perspective view of the adjuster part of the electric tool concerning the 1st invention. It is a disassembled perspective view of the adjuster part of the electric tool which concerns on 1st invention. It is a disassembled perspective view of the adjuster part of the electric tool which concerns on 1st invention. It is a right view which shows the holding state at the time of adjusting the grip range of the longitudinal direction of the electric tool which concerns on 1st invention widely. It is a left view which shows the state which adjusted the grip range of the longitudinal direction of the electric tool which concerns on 1st invention narrowly. It is a right view which shows the holding state at the time of adjusting the grip range of the longitudinal direction of the electric tool which concerns on 1st invention narrowly. It is a perspective view of the adjuster part of the electric tool concerning the 2nd invention. It is a disassembled perspective view of the adjuster part of the electric tool which concerns on 2nd invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric tool 2 Housing 2A Housing body 2B Housing handle 2a Handle grip 2b Opening 3 Switch 4 Battery pack 5 Adjuster 5A, 5B Adjuster split piece 5a Adjuster notch 5b Opening 5c Engagement groove 6 Soft layer 7 Screw 8 Screw shaft 9, 10 Bearing 11 Slider 12 Dial

Claims (5)

In an electric tool comprising a handle portion integrally extending from a body portion of a housing containing a motor as a drive source,
An electric tool provided with an adjuster movable in a longitudinal direction of the handle portion, and the adjuster can adjust a longitudinal range of a grip of the handle portion.   A screw shaft along the longitudinal direction is rotatably accommodated in the handle portion, a slider is screwed onto the screw shaft, a part of the slider is engaged with the adjuster, and a dial integrated with the screw shaft is turned. The power tool according to claim 1, wherein the adjuster is moved in a longitudinal direction of the handle portion by moving the adjuster along a screw shaft. In an electric tool comprising a handle portion integrally extending from a body portion of a housing containing a motor as a drive source,
An electric tool characterized in that an adjuster for adjusting a longitudinal range of the grip of the handle part is detachable from the handle part.   The electric tool according to any one of claims 1 to 3, wherein the adjuster is configured in a ring shape so as to cover an outer periphery of the handle portion from the outside.   The electric tool according to any one of claims 1 to 4, wherein a soft layer is formed on a surface of the adjuster.

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