JPS625853Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a holding device for a chuck handle of a power tool having a drill chuck.

Conventional power tool chuck handle holding devices are shown in FIGS. 4, 5, 6, and 7.

4 and 5, an assistant part 30 is located at the rear of a housing part 31 forming an inverted L shape, a drill chuck 13 is installed at the front part of the housing part 31, and a motor part is located in the middle part. In a structure in which a deceleration drive unit (not shown) is installed inside, and a start/stop switch trigger piece 15 is provided at the base of the handle part 30, the trigger piece 15 of the start/stop switch is provided at the base of the handle part 30. The chuck handle mounting portions 32 and 33 are provided on the upper center surface, respectively, and the chuck handle 5 is held in the device.

In the one shown in FIG. 6, the handle part 3 is located at the lower center of the housing part 12, the drill chuck 13 is installed in the front part of the housing part 12, and a motor part and a reduction drive part (not shown) are installed in the middle part. The trigger piece 15 of the start/stop switch is attached to the base of the handle 3.
In this structure, a chuck handle attachment part 34 is provided in the lower part of the handle part 3, and the chuck handle 5 is attached and held thereto.

The chuck handle holding devices shown in FIGS. 4 and 5 are both attached and held directly to the housing part 31 with some protrusion from the surface of the housing part 31, taking into account the operation of attaching and detaching the chuck handle 5. Therefore, when working while holding the housing portion 31 of the power tool, the chuck handle 5 hits the hand painfully, impairing operability. On the other hand, the chuck handle 5
If the amount of protrusion is reduced, there will be fewer parts to grasp when removing, making it more inconvenient to attach and detach. In addition, the chuck handle 5 including the holding device shown in FIG.
Since a portion of the steel is exposed to the outside, it is exposed to dust during work, which causes early damage such as rust, which impairs its aesthetic appearance. Moreover, since the chuck handle 5 is held exposed in the power tool body, the appearance of the tool is spoiled.

In the one shown in FIG. 7, the handle part 3 is located at the lower center of the housing part 12, the drill chuck 13 is installed in the front part of the housing part 12, and the motor part and the reduction drive part (not shown) are installed in the middle part. The trigger piece 15 of the start/stop switch is attached to the base of the handle 3.
In the structure provided with the opening 4 at the bottom of the handle 3
Attach the storage case 35 in which the chuck handle 5 is stored inside the removable storage case 35,
It holds the chuck handle 5.

The chuck handle holding device shown in FIG.
After attaching it to the drill chuck 13 and tightening the tip tool (driver bit, etc.), remove it from the storage case 35.
The operation of storing the chuck handle 5 in the
Since it is difficult to operate with one hand (the other hand is holding the power tool body), there is a problem that the operability is very poor, especially when working at heights that require one-handed operation. Furthermore, since the storage case 35 is removed from the power tool body and used separately, there is a drawback that the storage case 35 may be lost.

SUMMARY OF THE INVENTION An object of the present invention is to provide a holding device for a chuck handle of a power tool that eliminates the above-mentioned drawbacks of the prior art and allows easy handling of the chuck handle.

That is, in the present invention, the chuck handle is curved and stored and held inside the power tool body, and its attachment/detachment opening is covered with a cover that cannot be separated from the power tool body.
In addition, the relationship between the housing and the cover is devised so as to prevent the chuck handle from wobbling when stored and held.

An electric screwdriver to which an embodiment of the present invention is applied is shown in FIGS. 1 to 3 below. Housing part 12
A drill chuck 13 is attached to the front end of the two-split housing 1, 2 with a handle 3 formed at the middle lower part of the housing.
, a battery part 14 is arranged at the rear end, a trigger piece 15 of a start/stop switch is arranged at the base of the handle part 3,
A chuck handle 5 is housed in the lower part of the handle part 3. On the other hand, a motor section 16, a drive reduction section 17, and a torque adjustment section 18 are disposed in the middle of the housing section 12, and the two-split type housing 1,
2 are connected by screws 19. The handle portion 3 has an opening 4 at its lower portion as an attachment/detachment port for the chuck handle 5, and further has a handle portion 20 of the chuck handle 5 as shown in FIGS. 2 and 3.
A rib 21 that engages with the base of the gear portion 22 and a rib 23 that engages with the root of the gear portion 22 are formed, and the chuck handle 5 is accommodated and supported by the ribs 21 and 23 when the chuck handle 5 is housed. Further, a locking portion 10 is formed in the opening 4 at the bottom of the handle portion 3, with one end 8 being pivotally attached to the housings 1 and 2, and the other end 9 being locked with the housings 1 and 2. A cover 7 made of an elastic member is installed. The pivot portion 24 between the cover 7 and the housings 1 and 2 is connected to the cover 7.
A convex shape 25 is formed on both sides of the housing 1, and a concave shape 26 is formed on each of the housings 1 and 2 opposite to the convex shape 25, so that the cover 7 is sandwiched and pivoted between the housings 1 and 2. The cover 7 can be opened and closed by pulling off the edge 27 of the cover 7.
The locking portion 10 of the housing is elastically deformed and can be released from the locking portion 28 of the housing and opened. On the other hand, when closing, the locking part 10 is elastically deformed by pushing the end 29 of the cover 7, and is locked to the locking part 28 of the housing and closed. Further, the handle end 6 of the chuck handle 5 of the cover 7
A cushion 11 made of an elastic member is disposed on the part where the chuck handle 5 comes into contact, and the elastic force of the cushion 11 presses the handle end 6 of the chuck handle 5 to bring the chuck handle 5 into contact with the handle part 3. Store it directly.

Next, the effects of the present invention will be explained.

(1) Since the chuck handle 5 is housed and held inside the power tool body and the cover 7 is provided over the attachment/detachment opening of the chuck handle 5, the chuck handle is not exposed on the surface of the power tool, and therefore does not protrude. Since there is no part, when working by grasping the housing part 12, the touch of the hand is good and the operability is improved, and there is no dust generated during work, which prevents dust from sticking to the chuck handle 5. Rust prevention can prevent the occurrence of rust. Also, since the chuck handle does not appear on the exterior of the power tool,
This has the effect of improving the aesthetic appearance of the tool.

(2) Since one end of the cover 7 is attached to the housing part 12 by the pivot joint 24 and cannot be separated, there is no chance of the cover 7 being lost.
This has an extremely advantageous effect in that the cover 7 can be opened and closed and the chuck handle 5 can be attached and detached with one hand.

(3) Since the cushion 11 made of an elastic material is provided at the contact portion of the handle portion 20 of the chuck handle 5 of the cover 7, there is an effect that the chuck handle 5 can be prevented from rattling within the handle portion.

[Brief explanation of the drawing]

Fig. 1 is a partially longitudinal side view of an electric screwdriver to which an embodiment of the present invention is applied, and Fig. 2 is an A-A in Fig. 1.
3 is a sectional view taken along line B-B in FIG. 1, and FIGS. 4, 5, 6, and 7 are external views of a power tool with a conventional chuck handle holding device. FIG. In the figure, 1 and 2 are the housing, 3 is the handle, 4 is the opening, 5 is the chuck handle, 6 is the end of the handle, 7 is the cover, 8 is one end of the cover,
9 is the other end of the cover, 10 is a locking portion, and 11 is a cushion.

Claims (1)

[Scope of utility model registration request] In a power tool in which accessory parts of the power tool are stored in the main body of the tool, a chuck handle is provided in a handle part 3 having an opening 4 at the lower end formed by the two-split housings 1 and 2. 5 is housed and supported, and the opening 4 at the lower end of the handle portion 3
A cover 7 made of an elastic member is disposed at one end 8 of which is clamped and pivoted between the housings 1 and 2, and whose other end 9 is formed with a locking portion 10 that locks with the housings 1 and 2. The chuck handle holding device is further characterized in that a cushion 11 made of an elastic member is disposed at a portion of the cover 7 which is in contact with the handle end 6 of the chuck handle 5.