JP4489984B2 - Trimmer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, the length of the bit protruding from the lower surface of the base, that is, the depth of cut, can be slidably inserted into a cylindrical base so that a bit can be attached to the lower end and fixed at a predetermined slide position. It relates to a trimmer that can be adjusted.
[0002]
[Prior art]
For example, as disclosed in Japanese Utility Model Publication No. 55-15013, the trimmer includes a main body on which a bit can be mounted at the lower end, a cylindrical base in which the main body is slidably inserted, and a bit can protrude from the lower surface. The bit protruding from the lower surface of the base is capable of cutting the workpiece by fixing the main body at a predetermined slide position with respect to the base. In addition, here, as the adjustment of the protruding length of the bit, that is, the depth of cut, the tip of the knob screw screwed into the base is pressed against the taper groove formed on the surface of the main body to regulate the slide of the base, Alternatively, a mechanism is disclosed in which a rack is provided on the main body side and a dial is provided on the base side with teeth that mesh with the rack, and the base is slid relative to the main body by rotating the dial.
[0003]
[Problems to be solved by the invention]
In any of these adjustment mechanisms, it is necessary to rotate the knob screw or dial with the other hand while holding the main body with one hand, so that both hands are always closed. Therefore, for example, when it is desired to check the protruding length of the bit with a scale, a separate procedure of once placing the trimmer on a work table or the like is necessary, and the adjustment operation is troublesome.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to provide a trimmer having a simple configuration and capable of easily adjusting a cutting depth while being held by a hand and having excellent operability.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that a main body on which a bit can be mounted at the lower end, the main body is slidably inserted, has a slit in the axial direction, and the bit protrudes from the lower surface. A trimmer with a cylindrical base that can be fixed between the two ends of the slit, and the body can be fixed at a predetermined slide position with respect to the base. A roller that is in contact with the main body and can roll relatively in the sliding direction of the main body is provided in the slit at a position above the clamp .
In addition to the object of the first aspect, in order to smoothly slide the base through the roller, the invention according to the second aspect is provided such that the roller can be finely moved in the front-rear direction toward the main body side. .
According to a third aspect of the present invention, there is provided a main body on which a bit can be mounted at the lower end, and a cylindrical base in which the main body is slidably inserted and has a slit in the axial direction so that the bit can protrude from the lower surface. Provided, and a trimmer that can fix the main body at a predetermined slide position with respect to the base by a clamp that locks between both ends of the slit, the peripheral surface of the base abuts on the outer surface of the main body, and the main body slides on the main body. A roller that is relatively rollable in the direction is exposed in a slit in a state in which the main body is unfixed by the clamp, and is provided at a position covered by the clamp in the main body fixed state .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a trimmer, FIG. 2 is a left side view showing a part in cross section, FIG. 3 is a left side view of a base, and the trimmer 1 has a cylindrical plate 4 orthogonal to a rectangular plate 3 provided at the lower end. And a main body 5 which can be loosely inserted into the cylindrical portion 4 of the base 2 from above and has a rotary shaft 6 which is rotated by a built-in motor projecting downward. In addition, the plate 3 of the base 2 is provided with a through hole 7 so that the bit attached to the rotary shaft 6 protrudes downward through the plate 3 while the main body 5 is loosely inserted into the cylindrical portion 4. The protruding length of the bit from the lower surface of the plate 3 is the depth of cut.
[0007]
On the other hand, the cylindrical portion 4 of the base 2 has slits 8 formed in the axial direction, and clamps 10 that can be locked between the locking portions 9 and 9 projecting toward the front at both ends of the slit 8. The main body 5 that is provided and loosely inserted into the cylindrical portion 4 can be fixed at an arbitrary position. Similarly, at both ends of the slit 8 above the locking portions 9, 9, shaft support portions 11, 11 project from the front, and between the shaft support portions 11, 11, a central pin 14 is inserted into the cylindrical portion 4. A roller 13 arranged along the circumferential direction of the shaft is pivotally supported by inserting a pin 14 through a through hole 12, 12 formed in the shaft support portions 11, 11. The roller 13 is made of synthetic resin, and the peripheral surface of the roller 5 comes into contact with the main body 5 when the main body 5 is loosely inserted into the cylindrical portion 4. It can roll relatively in the sliding direction.
Here, since the through holes 12 and 12 are formed in an oval shape toward the main body 5, the roller 13 is moved relative to the main body 5 by the movable range of the pin 14 in the through holes 12 and 12. It can be finely moved back and forth.
[0008]
In the trimmer 1 configured as described above, when adjusting the cutting depth of the bit attached to the rotary shaft 6, the clamp 10 is released and the main body 5 is loosely inserted into the cylindrical portion 4 of the base 2. As shown in FIG. 4, when the roller 5 is rotated in an arbitrary direction while holding the main body 5 with one hand and holding the peripheral surface of the roller 13 with a thumb, the roller 13 rolls on the peripheral surface of the main body 5. Thus, the base 2 slides up and down along the main body 5, and the protruding length of the bit 15 from the lower surface of the plate 3 changes. Therefore, the operator can measure the protruding length of the bit 15 by holding the scale with the other free hand. At this time, as long as the operator holds the roller 13 without rolling it, the base 2 does not slide freely. When the slide position of the base 2 is determined, the selected cutting depth can be obtained by fixing the cylindrical portion 4 again by the clamp 10.
[0009]
Thus, according to the said form, it provided in the base 2 so that the surrounding surface might contact | abut to the outer surface of the main body 5, and the roller 13 which can roll relatively on the main body 5 in the sliding direction of the main body 5 was exposed. Thus, the adjustment of the depth of cut can be easily performed while being held by hand, and the operation of measuring the protruding length of the bit 15 with a scale can be performed at the same time, so that the operability is excellent. Since this can be realized with a simple configuration in which the roller 13 is provided, the cost increase can be reduced.
In particular, here, the through-hole 12 that supports the roller 13 is formed in an oval shape, and the roller 13 is provided so as to be able to finely move in the front-rear direction toward the main body 5 side. 5, and the base 2 can be smoothly slid through the roller 13.
[0010]
The roller may be made of rubber. If the base can be slid by rotating the roller, the material, size, mounting position, etc. are not limited to those described above, and the shape is also a curved surface of the main body. It is possible to change the design, for example, to secure a contact area by forming the peripheral surface into a concave shape according to the shape. Further, the through hole for supporting the pin of the roller can be replaced with an oval concave portion. However, if there is no hindrance to the base slide by the roller, these through holes and recesses do not necessarily need to be oval.
[0011]
On the other hand, the roller need not always be in an exposed state, and may be provided at a position covered with the clamp 10 in a fixed state, as shown in FIG. In this way, the clamp 10 can be released, the roller 13 can be rotated, and the clamp 10 can be fixed in a series of steps with the hand holding the main body 5, and the depth of cut can be adjusted more easily. . Further, since the roller 13 is hidden by the clamp 10, it is not necessary to add a new protruding portion to the cylindrical portion 4 of the base 2, and the operability and workability of the trimmer 1 are not deteriorated.
[0012]
【The invention's effect】
According to the first aspect of the present invention, the roller whose circumferential surface is in contact with the outer surface of the main body and is capable of rolling relatively on the main body in the sliding direction of the main body is positioned above the clamp in the slit. By providing it, the depth of cut can be easily adjusted while being held by hand, and operations such as measuring the protruding length of the bit with a scale can be performed simultaneously, so that the operability is excellent. Since this can be realized with a simple configuration provided with rollers, the cost increase can be reduced.
According to the second aspect of the invention, in addition to the effect of the first aspect, the roller can be finely moved in the front-rear direction toward the main body, so that the pressing force to the roller can be transmitted to the main body without loss. Thus, the base can be smoothly slid through the roller.
According to the invention described in claim 3, in addition to the effect of claim 1, in the slit to expose a fixed release state of the body by the clamp, by providing a position covered by the clamped in a fixed state of the body The clamp can be released, the roller can be rotated, and the clamp can be fixed in a series of steps with the hand holding the main body, making it easier to adjust the depth of cut. Further, since the roller is hidden by the clamp, it is not necessary to add a new protruding portion to the base, and the operability and workability of the trimmer are not deteriorated.
[Brief description of the drawings]
FIG. 1 is a front view of a trimmer.
FIG. 2 is a left side view of the trimmer.
FIG. 3 is a left side view of the base.
FIG. 4 is an explanatory diagram showing an adjustment state of a cutting depth.
FIG. 5 is a front view of a trimmer in which the position of a roller is changed.
[Explanation of symbols]
1. Trimmer, 2. Base, 3. Plate, 4. Cylindrical part, 5. Main body, 6. Rotating shaft, 8. Slit, 11. Shaft support, 12.. ..Roller, 14 ... pin, 15 ... bit.

Claims (3)

A main body that can be fitted with a bit at the lower end, a cylindrical base that is slidably inserted into the main body , has a slit in the axial direction, and from which the bit can protrude from the lower surface ; A trimmer capable of fixing the main body at a predetermined slide position with respect to the base by a clamping clamp ,
The base is provided with a roller whose peripheral surface is in contact with the outer surface of the main body and capable of rolling relatively on the main body in the sliding direction of the main body at a position above the clamp in the slit. A trimmer.   The trimmer according to claim 1, wherein the roller is provided so as to be finely movable in the front-rear direction toward the main body side. A main body that can be fitted with a bit at the lower end, a cylindrical base that is slidably inserted into the main body, has a slit in the axial direction, and from which the bit can protrude from the lower surface; A trimmer capable of fixing the main body at a predetermined slide position with respect to the base by a clamping clamp,
The base, the peripheral surface abuts the outer surface of the body, on the body a relatively rollable roller to the sliding direction of said body, in said slit, in the unlocking state of the body by the clamp A trimmer provided at a position where it is exposed and covered with the clamp in a fixed state of the main body .

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