JPS6134362B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric router, and in particular, a rotating blade shaft with rotating blades attached to both ends is held in a housing, and cutting operation is performed by switching the rotating blades by rotating the housing by 180 degrees. The present invention relates to a sliding mechanism in a housing rotation part of an electric router that can be used to rotate the housing of an electric router.

A conventional electric router will be explained using FIGS. 1 and 4. Reference numeral 3 denotes a housing containing a drive motor, and this housing 3 is supported on one side by a bolt 7 on a frame 8 so as to be rotatable by 180 degrees.
The housing 3 is fixed to the frame 8 by tightening the lock lever 6 which is screwed into the housing 3. The housing 3 includes a dovetail bit 1 and a dovetail bit 2 which are rotated by the motor, and has housing sliding parts 10 and 11 on each side opposite to the side where it is attached to the frame 8 (both sides of the free end). . Further, a housing cover 4 made of an iron plate that covers most of the lower part of the housing 3 except for a part of the lower part of the frame 8 is fixed at one end with a screw 16, and a support 5 is screwed onto the inner surface of the other end (free end). It is fixed at 16'. This support 5
is in contact engagement with the housing sliding parts 10 and 11, and the free end side of the housing cover 4 is supported by the housing 3. Reference numeral 9 indicates the rotation axis of the housing 3, and 13 indicates a lower contact point between the housing 3 and the frame 8.

In this electric router, when the housing 3 is rotated 180 degrees in order to switch the rotary blade up and down,
When the lock lever 6 is loosened, the housing 3 is released from the tightening by the bolt 7 and the lock lever 6, and the center of gravity G12 of the housing attempts to rotate in the direction of the arrow in the figure about the lower contact point 13 with the frame 8. At that time, the rotation center support 5 provided on the housing cover 4 and the housing 3
The sliding parts 10 and 11 are FA14 and FB15, respectively.
The component force of is added. As a result, the housing cover 4 is slightly deformed and opened as shown in FIG. A gap is created in between. If the housing 3 is rotated in this state, it cannot be rotated smoothly and the sliding portion 10
There was a problem that uneven wear or local breakage occurred.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide an electric router having a sliding mechanism that allows smooth rotation at all times.

Embodiments of the present invention will be described with reference to FIGS. 2 and 3. Fig. 2 is a partial side sectional view of an electric router according to an embodiment of the present invention, and Fig. 3 is an enlarged side sectional view of a sliding part. is attached. In the present invention, a slight gap is formed between the support body 5 and the housing sliding parts 10 and 11, and a part of the elastic sliding body 17 made of wear-resistant urethane rubber is protruded from the housing 3. This elastic sliding body 17 is connected to the support body 5 and the housing sliding part 1.
It is inserted between 0 and 11 in a compressed state.

With the above configuration, when the fixation of the housing 3 is loosened to switch bits 1 and 2, the housing 3 tilts and the housing cover 4 is slightly elastically deformed. The moving body 17 receives component force from the housing 3
Compression is increased by FA14. Although the gap between the lower housing sliding part 11 and the support body 5 is slightly expanded, this expansion is corrected by the expansion of the elastic sliding part 17, and the housing sliding part 10,
No looseness occurs between the support 11 and the support 5. Therefore, the sliding parts 10 and 11 of the housing 3 and the support body 5
A flexible contact state with no backlash can be maintained through the elastic sliding body 17, and the housing 3 can be rotated smoothly.

In the embodiment, the elastic sliding body is embedded in the housing, but the same effect can be obtained by embedding the elastic sliding body in the rotation center support and sliding the housing and the elastic sliding body. I can do it.

The above structure enables smooth rotation of the housing, improves the operability of the electric router, and is economical because it is a simple structure in which the elastic sliding body is embedded.

As explained above, according to the present invention, it is possible to achieve excellent industrial effects such as an inexpensive structure, good operability, and an improvement in work efficiency.

[Brief explanation of the drawing]

1 and 4 are partial side cross-sectional views of a conventional electrical router, with FIG. 1 showing the locking lever in the locked position and FIG. 2 showing the locking lever in the released position. FIG. 2 is a partial side sectional view of an electric router showing an embodiment of the present invention, with the lock lever in the locked position, and FIG. 3 is a partially enlarged view of FIG. 2. 1...Hira bit, 2...Available bit, 3...
Housing, 4... Housing cover, 5... Rotation center support, 6... Lock lever, 7... Bolt, 8... Frame, 16, 16'... Screw, 1
7...Elastic sliding body.

Claims (1)

[Claims] 1. Fix the housing to the frame at one end with a bolt whose axis coincides with the horizontal axis, and by loosening the bolt, the housing can be rotated about the horizontal axis. In the electric router, a housing cover is fixed to the frame, and a support body fixed to the free end side of the housing is brought into contact with housing sliding parts on both sides of the free end of the housing, A sliding mechanism for an electric router, characterized in that a gap is formed between the housing sliding part and the support body, and an elastic sliding body is interposed between the gap in a compressed state.