JPS61219585A - Vibrating drill - 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 [Technical Field] The present invention relates to a hand-held portable vibrating drill, such as a rechargeable type.

[Background technology]

The rechargeable vibratory drill operates by supplying power to the shimmotor from a battery, operating the drive unit by the rotation of the motor, and transmitting impact force and rotational torque to the drill bit to operate it.

In this type of rechargeable vibration drill, with the conventional battery fixing structure, when the user uses the drill, the reaction force of the impact force transmitted to the drill pit V returns to the main body housing, causing υ,
The vibration caused by the reaction force exerts a force on the battery itself to remove the battery fixing cover, and there is a risk that the battery fixing cover will come off and the battery will fall.

There are three problems caused by the battery falling. (
a) If the battery comes off, the vibration drill you are using will become unusable. (b) If the battery comes off and falls, it will be damaged and become unusable.

(C) If the battery comes off and falls, there is a risk of harm to the user of the vibrating drill.

Two examples of conventional battery fixing structures are shown in Figure 16 and Figure 1.
Each is shown in Figure 7. These battery fixing structures cannot sufficiently eliminate the problems in points '(a) to (C) above, as described below.

In the example shown in FIG. 16, a battery fixing cover 72 is provided on the front surface of a storage section 71 for a battery 70 so as to be rotatable to open and close around a support shaft 73. 74 is a vibration-proof rubber, 75 is a battery terminal, 76 is a terminal contact fitting, 77 is a housing, 78 is a motor, 79 is a handle, and 80 is a switch. With this structure,
When the vibrating drill user drills upward and sideways, there is little possibility that the battery fixing cover 72 will come off due to the reaction force of the impact vibration (in the direction of arrow Q) returning from the bit 81. This is because the housing 77 suppresses the vibration of the battery 70 due to the reaction force.

However, if the user drills downward, the bit 81
There is a strong possibility that the battery fixing cover 72 will come off due to the vibration of the battery 70 (in the direction of arrow Q') due to the reaction force returned from the battery 70 and the force (mM)X (gravitational acceleration f) due to the weight of the battery 70.

In the example shown in FIG. 17, a battery fixing cover 72' is provided on the lower surface of a housing section 71' for the battery 7o. With this structure, when the vibrating drill user drills upward and downward, there is little risk that the battery fixing cover 72' will come off, as described in the example of FIG. 16. However, when the user drills horizontally, the vibration of the battery 70 due to the reaction force returned from the bit 81 (in the direction of arrow P) and the weight of the battery 7o (mass M) x (gravitational acceleration f) are greater. In addition, there is a high possibility that the battery fixing cover 72 will come off. 80% of vibration drills are used for horizontal and downward drilling.
The conventional structure cannot be used in this respect.

[Purpose of the invention]

The object of the present invention is to provide a vibrating tray LVF that does not cause batteries to fall even when used in any orientation, such as upward, sideways, or downward.

[Disclosure of the invention]

The vibration drill of the present invention includes a housing for a battery that houses a driving device for driving a bit and serves as a power source for this driving device. and a handle for supporting the housing that supports the end portion of the battery in a removable manner.

According to this configuration, since the battery is supported by the handle, the battery is fixed by the supporting force of the handle and the supporting force of a person's hands. Therefore, the battery is securely fixed, and no matter what direction the battery is used, the battery will not fall accidentally, and the battery will not become unusable or damaged during use.

First example A first embodiment of the invention is shown in FIGS. 1 to 3.

In this example, a storage section 3 for the battery 2 is provided at the rear lower part of the housing 1 with a rearward opening, and a battery outlet 3 formed by the opening is provided.
A lid portion 4 for closing a is integrally provided with a handle 5. The handle 5 is rotatably attached to the housing 1 by a pivot shaft 6 at its upper end, and the lid 4 is connected to the screw hole 9 of the housing 1 by means of two fixing screws 8 inserted into the screw insertion holes 7. Fixed. Anti-vibration rubber 10 and 11 are attached to the inner surface of the lid part 4 and the back end wall of the storage part 3. Battery terminal 12 of battery 2
is connected to the motor 14 in the housing 1 and the switch 15 provided in the handle 5 via the terminal contact fitting 13 provided in the storage part 3.
Wired connection to.

The battery 2 consists of a storage battery or the like.

The following describes the drive device that drives the bit 16: Motor 1
The rotation of 4 is from the pinion 17 attached to the output shaft.
The signal is transmitted to the gear 19 at one end of the intermediate shaft 18, and is transmitted to the output shaft 22 via the gear 21 from the pinion 2o at the other end of the intermediate shaft 18. A gear fixing ring 23 is fitted onto the output shaft 22 and engaged with the spline portion 24 . 25 is a chuck.

Further, the rotation of the intermediate shaft 18 is transmitted from the bevel gears 26 and 27 to the eccentric shaft 28, and is transmitted through the connecting rod 29 to the drive element 3.
It is converted into a reciprocating linear motion of 0. The driver 30 is connected by a coil spring 32 to a hammer 33 fitted into a cylinder 31, and the hammer 33 reciprocates to strike the output shaft 22 due to the reciprocating movement of the driver 3°. Therefore, bit 1
6 performs rotation and impact motion by rotation transmission from the gear 21 and impact from the hammer 33. In addition to the drive device for the bit 16 that uses the coil spring 32 as described above, various structures such as a drive device that uses air pressure or a cam type drive device are used.

Operation of the First Embodiment According to this configuration, the bit 16 performs a rotational impact as described above. Battery 2 due to reaction force returning from bit 16
The force due to the vibration of the handle 5 fixed by the fixing screw 8
It is pressed down by the lid part 4 and a person's hand. Therefore, the battery 2 is reliably supported, and is reliably supported even when drilling is performed in any direction, such as upward, horizontal, downward, etc. Therefore, the battery 2 will not be accidentally dropped, and the battery 2 will not be damaged or rendered unusable during use.

To attach or remove the battery 2, remove the fixing screw 8 that fixes the lid 4, rotate the handle 5 around the pivot shaft 6 as shown in Figure 2, and open the battery outlet 3a. This is done by

Second embodiment 4 to 10 show a second embodiment.

In this example, the handle 5' is rotatably mounted on a pivot shaft 40 along the axial direction of the housing 1. Therefore, the handle 5' can be rotated about an axis perpendicular to the end surface 2a of the battery 2 on the battery outlet 3a side. Lid fixing grooves 41 for fitting the upper and lower edges of the lid portion 4' of the handle 5' are provided on the upper and lower edges of the battery outlet 3a, and a rotation preventing protrusion 42 (Fig. 5) is provided on the negative side edge. be. There is a locking member protruding slit 43 on the other side edge of the battery outlet 3a, and the locking member 4
A lock protrusion 44a at the rear edge of No. 4 protrudes. The lock member 44 is a guide space 4 formed within the wall thickness of the housing 1.
5 (Figs. 7 and 8) so that it can slide back and forth freely. Further, the lock member 44 is biased to protrude by a spring member 46, and has a lock button 47 integrally protruding from its upper end. The lock button 47 is located in the guide elongated hole 4 of the housing 1.
It protrudes outward from 8. The kite elongated hole 48 has wide portions 48a at both ends, and a retaining portion 49 that can enter the wide portions 48a is provided between the lock button 47 and the main body portion of the lock member 44. The rest of the structure is the same as the first embodiment.

Operation of the second embodiment According to this structure, the handle 5' is connected to the battery outlet 3' by the lid part 4'.
In the closed portion a, one side of the lid portion 4' in the rotation direction engages with the rotation preventing protrusion 42, and the other side engages with the locking member 44. The lock member 44 is pushed out by a spring member 46. Therefore, the lid portion 4' cannot be rotated in any direction and is closed. Therefore, even if torque is applied between the handle 5' and the housing 1 due to friction between the bit 16 and the object to be drilled, the handle 5' does not rotate. When attaching or detaching the second battery, push down the lock button 47 once, store the lock member 44 in the Uji Puffer 7, and rotate the handle 5' as shown in FIG.

In this configuration, the force caused by the vibration of the battery 2 due to the reaction force returned from the bit 16 is suppressed by the battery cover fixing groove 41 and the human hand. Therefore, no matter what direction the battery 2' is used, the battery 2' can be reliably supported and there is no problem of it falling off.

Third embodiment 11 to 13 show a third embodiment.

In this example, in addition to the lid part 4' integrated with the handle 5',
``A battery fixing cover 50 is provided. The battery fixing cover 50 is attached to the housing 1 by a support shaft 51 at the upper end.
The lower end is engaged with the cover engaging portion 52 of the housing 1 by a protruding piece 50a. The rest of the structure is the same as the second embodiment.

In this configuration, the force caused by the vibration of the battery 2 due to the reaction force returned from the bit 16 is suppressed by the battery fixing groove 41, the human hand, and the battery fixing cover 50. In this way, since the battery fixing cover 50 adds support, the battery 2
The supporting force of the battery 2 is increased, and attachment and detachment of the battery 2 is more reliably prevented.

Fourth example FIGS. 14 and 15 show a fourth embodiment.

In this example, the structure for fixing and removing the battery 70 is similar to that of the second example, but a switch 55 is provided which is turned on and off by opening and closing the lid 4'. This switch 55 has a pair of housing-side contacts 55a provided on the /S housing 1 and a handle-side contact 55b that connects them.
It consists of 56 is a lead wire.

In this configuration, since the switch 55 opens when the lid 4' is opened, the motor 14 is not inadvertently driven when the battery 2 is installed or removed, which is safe.

〔Effect of the invention〕

The vibration drill of the present invention has the advantage that the battery will not fall even when used in any orientation, such as upward, sideways, or downward.

[Brief explanation of drawings]

Fig. 1 is a cutaway side view of one embodiment of the present invention, Fig. 2 is a partially cutaway side view of the handle in an open state, Fig. 3 is a rear view thereof, and Fig. 4 is a cutaway left side of the second embodiment. 5 is a rear view with the handle open, FIG. 6 is a rear view with the handle closed, FIG. 7 is a right side view, and FIG.
The figure is an explanatory diagram of the locking operation taken along the line ■-■ in Figure 7, Figure 9 is a sectional view showing a part of the same cross-section, Figure 10 is a view taken along the line X-X in Figure 9, and Figure 11 is a cross-sectional view taken along the line The figure is a broken side view of the third embodiment, FIG. 12 is a back view with the handle open, FIG. 13 is a back view with the handle closed, and FIG. 14 is a broken side view of the fourth embodiment. , FIG. 15 is an electric circuit diagram thereof, and FIGS. 16 and 17 are cutaway side views of the conventional example.

Claims (4)

[Claims] (1) A housing with a built-in drive device that drives the bit and a storage section for a battery that serves as a power source for the drive device, and a housing that is provided in the housing and supports the end of the battery at the battery outlet of the storage section. and a releasably supported handle for supporting the housing. (2) The vibratory drill according to claim 1, wherein the handle is rotatable around an axis perpendicular to the end surface of the battery. (3) The vibration drill according to claim (1), wherein the battery is supported by the handle via a battery fixing cover that closes the battery outlet. (4) The vibratory drill according to claim (1), further comprising a switch that closes an electric circuit by bringing the handle into a state where it supports the battery.