JPH0557632A - Driving tool - Google Patents

Abstract

PURPOSE:To perform continuous driving at short driving intervals and further insure the satisfactory driving force. CONSTITUTION:In a driving tool provided with a reciprocated striker 3 for driving continuously supplied nails or staples into a board and the like by means of the striker 3, delay means 31, 32 for delaying the reciprocating phase of the striker 3 against the phase of component in the reciprocating direction of an eccentric rotation means 24 are provided between the eccentric rotation means 24 driven in rotation and the striker 3 which is reciprocatably supported and reciprocatingly driven by the eccentric rotation means 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving tool for driving a board or the like with nails or staples provided with a reciprocating striker and continuously supplied.

[0002]

2. Description of the Related Art As a driving tool of this type, there are an air type, a solenoid type and a spring type. In the air type, a piston is operated by the pressure of compressed air to drive nails or staples, and compressed air as an energy source is obtained from a compressor connected to a tool body by a hose. The solenoid type operates a striker by passing a current through a solenoid arranged in the tool body, and an AC power source is used as a power source. Further, in these air type and solenoid type, since the hose and the power cord interfere with each other and workability is poor, a spring type is provided as a small size and good workability using a battery as a power source.

As shown in FIG. 5, the rotation of the motor causes the eccentric pin 24 to rotate, thereby contracting the spring 60. When the spring 60 is contracted by a certain amount, the spring 60 is released and the force of the spring 60 is released. The weight 6 to which the striker 3 is attached is lowered. The upper right in the figure shows the movement of the eccentric pin 24, and the lower right shows the movement of the striker 3.

[0004]

In this case, in order to obtain the torque for contracting the spring 60, the reduction ratio from the motor to the eccentric pin 24 becomes large and the rotation speed of the eccentric pin 24 becomes slow. There is a problem in working efficiency because it is impossible to drive nails or staples. Figure 6
It is possible to directly move the striker 3 by the eccentric pin 24 by providing the striker 3 with a laterally long hole 30 with which the eccentric pin 24 engages as shown in FIG. Since the speed becomes slower at the bottom dead center, the driving force becomes considerably small.

The present invention has been made in view of the above points, and an object of the present invention is to provide a driving tool which has a short driving interval and can carry out continuous driving, and which can secure a satisfactory driving force. To provide tools.

[0006]

SUMMARY OF THE INVENTION The present invention, however, provides an eccentric rotation means that is driven to rotate in a driving tool that is equipped with a striker that is reciprocally driven to drive nails or staples that are continuously supplied to a board or the like by the striker. And a striker which is reciprocally supported and is reciprocally driven by the eccentric rotation means, and a delay means for delaying the reciprocating phase of the striker from the phase of the reciprocating direction component of the eccentric rotation means. Have

According to the present invention, since the phase of the striker lags behind the phase of rotation of the eccentric pin, it is possible to drive a nail or staple at a point before the speed of the striker decreases.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. In FIGS.
And a striker 3 are housed, and a magazine 4 is attached to the lower part of the tool body 1. The magazine 4 includes a guide rod 40, a pressing spring 41, and a pressing frame 42, and continuously supplies the staple 5 to a position below the striker 3. 1 in the figure
Reference numeral 0 is a battery pack, and 11 is a main switch. A deceleration unit 21 that decelerates the rotation of the motor 2 is attached to the motor 2. A rotary plate 23 is attached to the output shaft 22 of the deceleration unit 21, and an eccentric pin 24 is provided on the surface of the rotary plate 23. On the other hand, the striker 3 is vertically slidably held by upper and lower guide blocks 15 and 16, and the upper and lower sides thereof are connected to the eccentric pin 24 by springs 31 and 32, respectively. The places where the springs 31 and 32 of the striker 3 are connected are located above and below the upper and lower dead points of the movement of the eccentric pin 24, respectively.

In this structure, if the eccentric pin 24 is rotated by the motor 2, the eccentric pin 24 will move to the spring 3.
The striker 3 connected by 1, 32 is moved up and down. The vertical movement of the striker 3 at this time is as shown in FIG.
As shown in, the phase of the vertical component of the rotation of the eccentric pin 24 is delayed due to the expansion and contraction of the springs 31 and 32, and the amplitude of the vertical movement of the striker 3 also increases or decreases. Greater than the distance traveled.

The striker 3 ejects the staple 5 when the eccentric pin 24 reaches the bottom dead center. At this time, the speed of the staple 5 is not reduced, and the eccentric pin 24
Although the striker 3 is driven by following the movement of the stapler 5, the staple 5 can be strongly ejected.

[0011]

As described above, according to the present invention, since the delay means for delaying the reciprocating phase of the striker from the phase of the reciprocating direction component of the eccentric rotating means is provided, at the time before the speed of the striker decreases. A nail or staple can be driven in, and at this time, a required driving force can be obtained without increasing the driving interval.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an example.

FIG. 2 is a sectional view.

FIG. 3 is a sectional view of a magazine.

FIG. 4 is a cross-sectional view at the time of ejecting staples.

FIG. 5 is an explanatory diagram of a conventional example.

FIG. 6 is an explanatory diagram of another conventional example.

[Explanation of symbols]

 3 Striker 24 Eccentric pin 31 Spring 32 Spring

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mikihiro Yamashita 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (1)

[Claims] 1. A driving tool for driving nails or staples continuously supplied with a reciprocally driven striker into a board or the like by the striker, and an eccentric rotation means rotatably driven and an eccentricity movably supported. Between the striker that is reciprocally driven by the rotating means,
A driving tool comprising delay means for delaying the reciprocating phase of the striker from the phase of the reciprocating direction component of the eccentric rotating means.