JPS60135201A - Fixed device in portable rooter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for fixing a router body that moves up and down relative to a guide in a portable router.

In general, this type of portable router has a router body equipped with a driving part and a tool mounting part rotated by the driving part, which is mounted so as to be movable downward -L with respect to a guide set upright on the base.
This router main body is constructed with a protruding grip part for operation, and when used, a prescribed tool is attached to the tool mounting part, the base is placed on the top surface of the workpiece, and the router main body is lowered. The tool is caused to protrude from the lower surface of the base, and by grasping the grip portion, the router main body, that is, the entire portable router, is moved as desired to perform router processing on a workpiece. During machining, a means for fixing the lowered state of the router main body, that is, the state of the tool protruding from the lower surface of the base, is required in order to set the depth. However, since the conventional means utilizes a set screw type structure, the set screw must be screwed in and out each time through a lever, etc., and is extremely difficult to operate. This is troublesome, and the fixing means is often left in the fixed state even after the work has been completed. If this happens, the tool will protrude from the base and remain in the lc position, which is extremely dangerous as the operator may be injured, and the tool is likely to be damaged and the workpiece material is likely to be damaged. It had the following drawbacks. If you need to urgently release the locked state during work,
It was impossible to deal with the situation, and the danger of the work increased.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional drawbacks, an object of the present invention is to provide a fixing pin in a part of the router body so as to be movable by pressing from a direction substantially perpendicular to the guide, and a fixing pin connected to the fixing pin. A locking lever is tiltably mounted near the grip, and when the locking lever is moved, the locking pin is pressed against the guide, thereby making it possible to lock the router body. It is an object of the present invention to provide a locking device for a portable router that can be performed together with the operation of gripping the router body, thereby making locking and releasing operations by a locking means extremely simple, and solving the above-mentioned conventional drawbacks.

Hereinafter, the illustrated embodiment embodying the present invention will be described in detail first, and the first embodiment shown in FIGS. 1 to 3 will be described in detail. 2, two pipe-shaped guide rods 3, 3 erected on the base 2, and a router main body 4 installed so as to be movable up and down with respect to the guide rods 3, 3. A through hole 2a through which a tool K, which will be described later, enters and exits is provided approximately at the center of the base 2.

The router main body 4 is equipped with a driving section 5 consisting of an electric motor or the like in the vertical direction at the center thereof, and the main shaft 6 of this driving section 5 slightly protrudes from the lower part of the router main body 4 and is used for tools such as router bits. Tool mounting part 7 for installing K
is installed facing downward. Grips 8.8 are provided on both sides (left and right in the figure) of the router body 4 facing the guide rod 3. The handles 8.8 are gripped when the entire portable router 1 is operated (moved). Further, a compression splinter 9 is elastically mounted in each of the two guide rods 3, 3, and the upper end of this compression spring 9 is in contact with the inner upper part of the router main body 4, so that the router main body 4 is It is always biased in the upward direction relative to the guide rods 3, 3, that is, to be located at the rising end.

” A fixing means 1O for fixing the router main body 4 to the guide rod 3 on one side (left side in the figure) of the router main body 4 is installed at the lower part near the grip part 8. . Hereinafter, the fixing means 10 will be explained in detail with reference to FIG.
A first insertion hole 11 is provided in the router main body 4 in a step-like manner in a direction perpendicular to the guide rod 3 from the end surface toward the guide rod 3. A second insertion hole 12 is provided in communication with the second insertion hole 12 in a direction perpendicular to the first insertion hole 11 . A stepped fixing pin 1 constituting the fixing means 10 is provided on the guide rod 3 side of the first insertion hole 11.
3 is movably inserted, and the fixing pin 13 is made of a material that is relatively softer than the bottle body 13a and the bottle body 13a, which has a truncated conical tip and faces the second insertion hole 12. It is integrally formed with a pressing body 13b whose rear end faces the guide rod 3 so as to be able to come into contact with it, and which is replaceably fitted to the rear end of the bottle main body 13a. Further, a set screw 14 is screwed into the distal end portion of the first insertion hole 11 , and one end of the set screw 14 is sharpened into a truncated cone shape and faces the second insertion hole 12 .

A connecting pin 16 of the fixing lever 15 is provided in the second insertion hole 12.
is loosely inserted into the connecting pin 16, and the connecting pin 16 has two flat portions 16a at two opposing locations on its outer periphery.

16a is formed, one flat part 16a is brought into contact with the tip of the fixing bottle 13, and the other flat part 16a is brought into contact with one end of the set screw 14 to prevent removal and rotation. . A lever piece 15a is provided protruding from the end of the connecting pin 16 that protrudes from the router main body 4.
The end of a is extended to the vicinity of the grip portion 8 and is attached to the finger rest piece 15.
b is formed. Note that the locking lever 15 is such that the connecting pin 16 loosely inserted into the second insertion hole 12 is connected to its flat surface 16a.
, 16a, and is tiltable in the direction toward the grip portion 8. The pressing body 13b of the fixing pin 13 is always urged in the direction away from the guide rod 3 by the elasticity of the compression spring 17 that is elastically loaded between the stepped portion of the fixing pin 13 and the stepped portion of the first insertion hole 11. As a result, the locking lever 15 is always biased away from the grip portion 8 and positioned in a desired state.

This embodiment is constructed as described above, and when using the portable router 1, an operator grasps the grip portion 8.8 of the router body 4 and holds the router body 4 between the guide rods 3, 3. to make the tool K protrude from the lower surface of the base 2,
Then, the entire portable router 1 is moved as desired to perform router machining on the workpiece.Currently, the tool K is moved to the base 2 in order to set the machining position of the router body 4, that is, the cutting depth. When maintaining the state protruding from the lower surface, the finger rest piece 15b of the locking lever 15 is pressed by the finger of the hand that grips one of the grip parts 8, 8.
When the grip portion 8 is gripped by hooking the locking lever 15 with a finger, the connecting pin 16 locks the set screw 14° in contact with the flat portions 16a, 16a. The pin 13 is tilted in the direction of the arrow in the figure, that is, toward the grip portion 8, using the truncated cone portion at the end of the pin 13 as a fulcrum.

Due to this tilting of the connecting pin 16, the fixing pin 13 is pushed toward the guide rod 3 against the elasticity of the compression spring 17.
The end surface of the pressing body 13b is pressed against the outer peripheral surface of the guide rod 3. This fixes the router body 4 to the guide rod 3.3 and prevents it from moving up and down, and this state is maintained while the fixing lever 15 is held together with the grip part 8. It is.

To release the fixed state of the router main body 4 to the guide rods 3, 3, the finger abutment piece 15b of the fixed lever 15 is
When the fingers of the hand holding the grip part 8 are released, the restraint of the pressing force on the fixing pin 13 is released, the fixing pin 13 is returned to its original state by the elasticity of the compression spring 17, and the pressing body The pressure on the guide rod 3 by the guide rod 13b is released, and the router main body 4 is allowed to rise and fall. As the locking pin 13 returns, the linking pin 16 is tilted back to its original state, and the locking lever 15 is also returned to its original state. It should be noted that unless the router main body 4 is moved in the downward direction, it is automatically raised by the elasticity of the compression spring 9, and the position at the rising end is maintained.

As described above, in this embodiment, the locking lever 15 can be operated with the fingers of the hand holding the grip part 8, and this locked state causes the locking lever 15 to move in the direction of gripping the grip part 8. Therefore, it is extremely easy to lock and release the locked state.

In addition, in this embodiment, the pressing body 13b of the fixing pin 13
The end surface of the guide rod 3 may be formed into an arc-shaped concave surface or a square-shaped concave surface so as to match the outer periphery of the guide rod 3.

Next, the separate fixing means 1O described above will be explained in detail with reference to FIGS. 4 to 11. Note that items that are the same as those in the first embodiment described above are designated by the same reference numerals in the drawings, and detailed description thereof will be omitted.

First, the second embodiment shown in FIGS. 4 and 5 will be described in detail.
2 is eliminated, and the fulcrum of the fixing lever 15 is provided on the outer peripheral surface of the router main body 4. That is, one end of the fixing pin 13, which is movably inserted into the first insertion hole 11 with the compression spring 17 loaded therein, protrudes from the end surface of the router main body 4.
A small-diameter stepped pin portion 18 is formed at this end to connect with a locking lever 15, which will be described later. The piece 15a is loosely fitted into the stepped pin part 18 of the fixing pin 13 through the round hole 19 at the end of the piece 15a, and the end is attached to the side of the router main body 4 with a bolt 21 via a spacer 20. The rest of the configuration is the same as that of the first embodiment. Therefore, in this embodiment, by gripping the locking lever 15 together with the grip portion 8, the locking lever 15 moves in the direction of the arrow shown in the figure, with the bolt 21 portion as a fulcrum.
This fixing pin 13 is tilted toward the grip part 8 side and pushes the fixing pin 13 connected through the Daruma hole 19.
is pushed against the elasticity of the compression spring 17 and pressed against the outer peripheral surface of the guide rod 3. As a result, the router main body 4 is fixed to the guide rod 3. When releasing this locked state, the locking pin 13 is returned to its original state by the elasticity of the compression spring 17 by releasing the gripping state of the locking lever 15. The lever 15 is tilted and returned to its original state, and the same effects as in the first embodiment described above are obtained. In this embodiment, the fixing pin 13 is prevented from being removed by a retaining ring 22 provided in the first insertion hole 11.

Next, the third embodiment shown in FIGS. 6 and 7 will be described in detail. In this embodiment, the fulcrum structure of the connecting pin 16 and the fixing pin 13 are changed from the first embodiment. That is, the pin body 13a of the fixing pin 13 inserted into the first insertion hole 11 has an insertion hole 23 that matches the second insertion hole 12.
An engaging protrusion 24 is formed in an annular shape at one end of the insertion hole 23, and a connecting pin 1 is inserted into the insertion hole 23.
At the same time, the shaft end 25 of the connecting pin 16 is loosely inserted into the part 12a of the second insertion hole 12 extending from the first insertion hole 11, and approximately at the end of the eye connecting pin 16. The formed small diameter portion is fitted loosely into the engagement protrusion 24 to prevent removal, and the end surface of the pressing body 13b is formed into a V-shape, and the rest of the structure is the same as that of the first embodiment. The same is true. Therefore, in this example, the locking lever 15 is tilted using the portion 1'2a of the second insertion hole 12 at the shaft end 25 of the connecting pin 16 as a fulcrum, and this tilting of the connecting pin 16 causes the small diameter portion to Through engagement with the engagement protrusion 24, the fixing pin 13 is pushed toward the guide rod 3 against the elasticity of the compression spring 17, and its V-shaped end surface is pressed against the outer peripheral surface of the guide rod 3. The remaining functions and effects are the same as in the first embodiment.

The fourth embodiment shown in FIG. 8 will be described in detail. In this embodiment, the structure of the fixing pin 13 and the fixing lever 15 of the first embodiment is simplified. That is, the first insertion hole 1
A fixing pin 13 with a flange is inserted into the compression spring 17.
The connecting pin 16 is bent into an L shape, and the bent shaft portion 26 is loosely inserted into the first insertion hole 11 from its end surface, and the end surface of the shaft portion 26 is inserted into the fixing pin 13. The shaft portion 26 is supported in the first insertion hole 11 by a support pin 27 so as to be tiltable toward the grip portion 8 side,
In order to prevent the connecting pin 16 from tilting more than necessary toward the side opposite to the grip portion 8, a stopper 2 is inserted from the side of the router main body 4.
8 is provided protrudingly.

Therefore, in this embodiment, the connecting pin 1 in the locking lever is
6 is tilted about the support pin 27, the end surface of its shaft portion 26 is also moved in an arc shape around the support pin 27, and this movement causes the fixing pin 13 to be affected by the elasticity of the compression spring 17. It is pushed against the guide rod 3, and the other operating effects are the same as in the first embodiment. In this example, when the locking lever returns, the stopper 28 prevents the locking lever from tilting more than necessary, and in order to allow a larger tilting range of the connecting pin 16 than in the first embodiment, the first A large diameter relief hole 29 is formed in the end surface of the insertion hole 11.

Next, the fifth embodiment will be described in detail with reference to FIGS. 9 to 11. In this embodiment, the fixing pin 13 is pushed by an eccentric pin, and the first A second insertion hole 30 is provided perpendicularly to the insertion hole 11 in the vertical direction, and
An eccentric pin 31 is inserted into the second insertion hole 30 in a rotatable and unremovable manner via a retaining ring.
1 has an eccentric shaft portion 31a at an approximately central portion facing the first insertion hole 11, and the shaft end protruding from the router main body 4 is knurled or the like.

A fixing pin 13, which is normally biased toward the eccentric shaft portion 31a by a compression spring 17, is inserted between the guide rod 3 and the eccentric shaft portion 31a in the first insertion hole 11. A locking lever 15 is provided to protrude toward the grip portion 8 from the knurled shaft end of the 3O. When the locking lever 15 is tilted toward the grip portion 8, the eccentric pin 30
The position of the fixing pin 13 is regulated by the eccentric shaft portion 31a so as to push it toward the guide rod 3, and the torsion spring 3 is elastically mounted between the lever 15 and the router main body 4.
2 and the stopper 33 allow for tilting upon return and prevent more tilting than necessary. Therefore, in this embodiment, the locking lever 15 is moved toward the grip portion 8 side.
When the eccentric pin 31 is tilted by the fingers of the hand holding it, the eccentric pin 31 rotates and the fixing pin 1 is rotated by the eccentric amount of the eccentric shaft portion 31a.
3 is pushed against the elasticity of the compression spring 170, and its end face is pressed against the guide rod 3.Contrary to the above, when you release your finger from the locking lever 15, the locking lever 15 returns to its original state. Since the eccentric pin 31 is rotated in the opposite direction to the above, the pressing force on the fixing pin 13 is released, and the pressing force on the guide rod 3 by the fixing pin 13 is released. The operation and effect of this embodiment are the same as those of the first embodiment described above.

As described in detail above, the present invention includes a router main body equipped with a drive section and a tool mounting section rotated by the drive section, which is mounted so as to be movable up and down with respect to a guide erected on a base. The portable router is provided with a protruding grip portion for operating the router body, and a fixing pin is mounted on a part of the router body so as to be movable by pressing from a direction substantially perpendicular to the guide. A locking lever connected to the locking pin is tiltably mounted near the grip, and the locking pin is pressed against the guide when the locking lever is moved. Tilting operation of the locking lever locks and releases the router body against the
That is, this can be done by grasping the grip, and can be done very simply and easily. This has the advantage that this type of portable router can be handled safely and easily.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and FIG. 1 is a partially cutaway front view of a portable router implementing the fixing means of the first embodiment;
FIG. 2 is a partially broken plan view, FIG. 3 is an enlarged plan sectional view of the main part, FIGS. 4 to 11 show separate fixing means, and FIG. 4 shows the second embodiment. 5 is a plan sectional view, FIG. 6 is a plan sectional view of the main portion showing the third embodiment, FIG. The figure is number 4
FIG. 9 is a plan sectional view of essential parts showing the fifth embodiment, FIG. 10 is a sectional view taken along line B-B in FIG. 9, and FIG. 11 is a bottom view of the same. It is. DESCRIPTION OF SYMBOLS 1... Portable router 2... Base 3... Guide rod 4... Router main body 5... Drive part 7... Tool attachment part 8... Grip part 10... Fixing means 13...Fixing pin 15...Fixing lever Applicant Makita Electric Manufacturing Co., Ltd. Agent Patent attorney Oka 1) Hidehiko% 1 V Figure 4 Figure 5 Figure 6 WU 57 Figure 8 Figure 9 Cabinet 10 31 31a 10th kick: Figure 11

Claims (1)

[Claims] A router main body equipped with a driving part and a tool mounting part rotated by the driving part is installed so as to be movable up and down with respect to a guide set upright on the base, and the router main body has a mechanism for operating the router main body. In a portable router having a protruding grip part, a fixing bottle is installed in a part of the router body so as to be movable by pressing from a direction substantially perpendicular to the guide, and a fixing bottle is connected to the fixing bottle. A locking device for a portable router, characterized in that a lever is tiltably mounted near the grip so that the locking bottle is pressed against a guide when the locking lever moves.