JPH047901Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The present invention is a fastener feeder that feeds fasteners to an injection port in a driving machine such as an air nailer or an electric nailer that drives fasteners continuously. It is related to the device.

[Background of the invention] The driving machine will be described below as a pneumatic driving machine. FIG. 4 shows a pneumatic driving machine of a known construction. As is well known, a pneumatic driving machine stores compressed air from an air compressor (not shown), and has a handle portion including a trigger and a control valve that is opened and closed by the trigger, a cylinder (not shown), and a cylinder (not shown), and a handle portion that stores compressed air from an air compressor (not shown). The main body 1 consists of a striking drive unit, etc., which is made up of a piston, etc. shown by broken lines that reciprocates in the vertical direction, an injection port 2 provided below the striking drive unit, and a large number of stops provided below the handle part. A magazine for storing the tools 12 is provided between the magazine and the ejection port 2, and the stops 12 from the magazine are inserted into the ejection port 2 one by one.
It consists of a feeding section etc.

As is well known, in the pneumatic driving machine having the above configuration, the trigger is pulled and the control valve is opened to supply compressed air to the impact drive section, and the piston is rapidly lowered to cause the stopper to be sent into the injection port 2. The stopper 12 is driven into the material to be driven by striking the tool 12.

As is well known, the feeding section includes a nail guide 3 integrally formed with the injection port 2, facing the nail guide 3 via a stop feed passage 5, and opening/closing the injection port 2 via an opening/closing shaft 6. A nail cover 4 is attached to the nail cover 4, a feed claw 3a is held movably in the nail guide 3 and pushes the stopper 12 to feed the stopper 12 into the injection port 2, the feed claw 3a is supported by the nail cover 4, and the feed claw 3a is supported by the nail cover 4, It is composed of two locking claws 4a and the like that prevent the stopper 12 from returning to the magazine side during forward and backward movement. The locking claw 4a is rotatable about a fixed shaft 8 attached to the nail cover 4 as a fulcrum as shown in FIG. It's starting to stand out. As shown in FIG. 6, a locking shaft 7 is held at the rear end of the nail cover 4 on the magazine side so as to be slidable in the vertical direction, and a knob 10 is attached to the locking shaft 7 via a pin 9. , the locking shaft 7 is pushed upward by the spring 11 via the knob 10, and the upper end of the locking shaft 7 projects upward from the upper surface of the nail cover 4, and a projection extends from the upper surface of the nail guide 3 toward the nail cover 4 side. It is designed to fit into a locking hole provided in the portion 3b. That is, knob 10
The locking shaft 7 is pushed down to disengage the nail cover 4 and the nail guide 3, and the nail cover 4 is opened using the opening/closing shaft 6 as a fulcrum so that the stopper 12 can be loaded. When feeding, the nail cover 4 is closed and the locking shaft 7 is fitted into the locking hole of the protrusion 3b of the nail guide 3, thereby locking the nail cover 4 to the nail guide 3.

In such a conventional configuration, two shafts are required, the fixing shaft 8 of the locking pawl 4a and the locking shaft 7 of the nail cover 4, as shown in FIG. 7, and the entire nail cover 4 becomes longer toward the magazine side. Opening/closing shaft 6 and knob 1
This has disadvantages in that the zero distance becomes longer, it takes more time to open and close the nail cover 4, and the weight of the feeding section increases, causing the driving machine to become unbalanced and hindering the driving operation.

[Purpose of invention]

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art, and to provide a driving machine that facilitates the loading of fasteners into the feeding section, reduces the weight of the feeding section, and has good operability. It is.

[Summary of the idea]

The present invention focuses on the fact that the nail cover becomes long due to the two shafts, the fixed shaft and the locking shaft, causing the above-mentioned drawbacks, and the present invention combines the fixed shaft and the locking shaft into one shaft. The relationship between the locking pawl and the locking shaft has been devised so that the nail cover can be used for both purposes, and the nail cover can be made smaller.

[Embodiment of the invention] The invention will be described below with reference to FIGS. 1 to 3 and 8, which show one embodiment.

The rear end of the locking pawl 4a on the magazine side extends to the locking shaft 7 and is attached to the locking shaft 7, as shown in FIGS. 3 and 8. Therefore, the locking pawl 4a comes to rotate about the locking shaft 7 as a fulcrum. Note that 13 is a plate that covers the side surface of the nail cover 4, and the stopper 1 whose upper surface is bent toward the knob 10 side.
3a to prevent the knob 10 from coming off upward when the nail cover 4 is opened.

According to the above embodiment, the fixing shaft 8 of the conventional example is removed and the locking shaft 7 also acts as the fixing shaft 8, so that the nail cover 4 can be downsized, and the nail cover 4 can be Opening/closing shaft 6 which is the opening/closing fulcrum
It is also possible to reduce the distance between the nail cover 4 and the locking shaft 7, making it easier to open and close the nail cover 4.

[Effect of idea]

As described above, according to the present invention, the fixed shaft that serves as the rotational fulcrum of the locking pawl is shared with the locking shaft for attaching the nail cover to the nail guide, and the distance between the opening/closing axis of the nail cover and the locking axis is adjusted. Since the nail cover can be made shorter, the nail cover can be made smaller and the opening and closing work of the nail cover can be made easier. Furthermore, since the entire feeding section can be made small and lightweight, the driving machine can be made lightweight and easy to operate.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the main part of the fastener feeding device of the driving machine of the present invention, Fig. 2 is a sectional view taken along the line C-C in Fig. 1, and Fig. 3 is the nail feeder shown in Fig. 2. FIG. 4 is a side view showing the overall configuration of a conventional driving machine; FIG. 5 is a sectional view taken along line A-A in FIG. 4; FIG. 7 is a cross-sectional view corresponding to the line FF in FIG. 4, and FIG. 8 is a cross-sectional view corresponding to the line E-E in FIG. 1. In the figure, 1 is a driving machine, 2 is an injection port, 3 is a nail guide, 3a is a feed pawl, 3b is a protrusion, 4 is a nail cover, 4a is a locking pawl, 7 is a locking shaft, and 8 is a fixed shaft , 12 are stops.

Claims (1)

[Scope of Claim for Utility Model Registration] A striking drive unit that uses compressed gas, electricity, etc. as a power source to drive a stopper, an injection port provided below the strike drive unit, and a magazine that stores the fasteners. and a feed pawl provided between the magazine and the injection port and reciprocating along the stop feed direction to feed the stops one by one into the injection port, and between the injection port and the magazine. a nail guide provided to movably hold the feed claw; a nail cover with one end rotatably attached to the injection port so as to face the nail guide via a stopper feed passage; a locking shaft that is attached to the other end so as to be vertically movable and that locks the nail cover to the nail guide by engaging with a locking hole provided in a protrusion extending from the top surface of the nail guide toward the nail cover; A fastener feeding device for a driving machine having a locking pawl that is held by a nail cover and whose tip is pushed toward the fastener feed path to prevent the fastener from retreating toward the magazine, the locking device comprising: A fastener feeding device for a driving machine, characterized in that the rear end of the pawl on the magazine side extends toward the magazine and is attached to a locking shaft, and the rotation center of the locking pawl is the locking shaft.