JP2541127Y2 - Angle attachment of perforation drilling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an angle attachment of a percussion drilling machine attached to a rotary perforation drill such as a hammer drill.

[Background of the invention]

The device according to the prior art is disclosed in JP-A-61-103785,
There is a driving member and a driven member that transmit torque, and
In addition to these, there is a structure in which a striking force transmitting member for transmitting striking force is provided, and the number of components is large and complicated, so that there is a drawback that efficiency is low.

[Purpose of the invention]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an efficient and inexpensive angle attachment with a simple structure, eliminating the disadvantages of the prior art.

[Outline of the invention]

The present invention is directed to an angle attachment mounted on a hit drilling machine that generates a rotary motion and a hitting motion in a rotation axis direction, wherein the rotary motion and the hitting motion are transmitted from the hit drilling machine and are movable in the axial direction. A rotatable driving member, and a driven member to which the rotating motion and the striking motion are transmitted from the driving member, the rotatable driven member being movable in an axial direction orthogonal to the axial direction and rotatable. And the driven member has a rotation transmitting portion for transmitting rotation and a hitting transmitting portion for transmitting hitting.

[Example of the invention]

1 and 2 show an embodiment according to the present invention. In the casing 3 whose axis is deflected, there are a driving member 5 and a driven member 7 which are rotatably and axially movable on a bearing 4 and a bearing 6, respectively, and the casing 3 on the driving member 5 side has an opening. And attached to the drilling machine 1. At this time, the end of the driving member 5 which comes to the opening side of the casing 3 at the same time is
And is attached to the drilling machine 1. On the other hand, a driving gear 50 is provided at the other end of the driving member 5 and meshes with a driven gear 70 at the driven member 7 end in the casing 3. The other end of the driven member 7 is provided with a tool holding hole 11 for inserting and attaching a tip tool (not shown) such as a drill bit. The needle 8 and the needle holder 9 around the tool holding hole 11 are provided. The tip tool is held by the tool holding unit 10. FIG. 2 shows a cross section taken along line AA of the meshing between the driving gear 50 and the driven gear 70. The driving gear 50 and the driven gear 70 include a driving gear tooth tip surface 51 and a driven gear tooth bottom surface.
72, or the drive gear tooth bottom surface 52 and the driven gear tooth tip surface 71 are opposed by slopes, and are in contact with each other. At this time, the teeth have gaps in the rotational direction between the respective tooth spaces.

When a tip tool (not shown) is attached and the tip tool is pressed against a work material (not shown) to perform a drilling operation, the driven member 7 is pushed together with the tip tool in the direction B, and the driving gear tip Surface 51 and driven gear tooth bottom 72 or drive gear tooth bottom
52 and the driven gear tooth top surface 71 are in contact with each other. When the drilling machine 1 is operated, the rotation and impact generated by the drilling machine 1 are transmitted to the driving member 5. The torque is transmitted from the driving gear 50 to the driven gear 70, and the tip tool rotates together with the driven member 7.

On the other hand, the striking force is driven via the driven gear tooth bottom surface 72 which is in contact with the drive gear tooth surface 51 on the slope, or the driven gear tooth surface 71 which is in contact with the drive gear tooth surface 52 on the slope. It is transmitted to the member 7 and strikes the tip tool. That is, the driving gear 50
The driven gear 70 functions as both a rotation transmitting unit for transmitting rotation and a striking transmitting unit for transmitting striking.

As shown in FIG. 3, the drive gear 50 and the driven gear slope 70, which are the impact transmission parts for transmitting the impact force to the small diameter side of the driven gear 70, are disposed and opposed to each other. If this part is brought into contact, the tooth tip surface and the tooth bottom surfaces 51, 52, 71, 72 of the driving gear 50 and the driven gear 70 may not be in contact with each other. In this case, the driving gear 50 and the driven gear 70 function only as a rotation transmitting portion, and the life of the deflection transmitting portion is further extended by FIG.

Also, as shown in FIG. 4, the driving gear 50, the driven gear
The drive section slope 55 and the driven section slope 75, which are impact transmission sections for transmitting the impact force to the large diameter side of 70, respectively, are arranged to face each other,
If this part is brought into contact, the tooth tip surface and the tooth bottom surfaces 51, 52, 71, 72 of the driving gear 50 and the driven gear 70 may not be in contact with each other. Also in this case, the driving gear 50 and the driven gear 70 function only as a rotation transmitting unit, and the life of the deflection transmitting unit is further extended as compared with FIG.

[Effect of the invention]

According to the present invention, since the rotational force and the striking force are simultaneously transmitted in the deflected portion of the rotating shaft, it is possible to provide a simple, efficient, and inexpensive angle attachment with a simple mechanism.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing one embodiment of an angle attachment of a percussion drill according to the present invention, and FIG. 2 is A in FIG.
FIG. 3 is a longitudinal sectional side view of another embodiment. In the figure, 3 is a casing, 4 is a bearing A, 5 is a drive member, 6 is a bearing B, 7 is a driven member, 50 is a drive gear, 51 is a drive gear tooth tip, 52 is a drive gear tooth bottom, and 55 is a drive gear tooth bottom. A drive unit slope, 70 is a driven gear, 71 is a driven gear tooth tip surface, 72 is a driven gear tooth bottom surface, and 75 is a driven unit slope.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hiroshi Kawakami 1060 Takeda, Katsuta-shi, Ibaraki Pref. Inspector, Hitachi Koki Co., Ltd. Shinichi Omori (56) References JP-A-61-103785 (JP, A) 58-31651 (JP, Y2)

Claims (1)

(57) [Scope of request for utility model registration] 1. An angle attachment mounted on a perforating machine that generates a rotary motion and a percussive motion in the direction of a rotational axis, wherein the rotational motion and the percussive motion are transmitted from the perforating machine to be movable in the axial direction. And a rotatable driving member, and a driven member rotatable and rotatable in an axial direction orthogonal to the axial direction, to which the rotating motion and the striking motion are transmitted from the driving member. An angle attachment for a percussion drilling machine, characterized in that the member and the driven member have a rotation transmitting portion for transmitting rotation and a percussion transmitting portion for transmitting percussion.