JPH07328952A - Nail drive guiding device for nailing machine - Google Patents

Abstract

PURPOSE:To straightly drive a nail and very simply remove a nail at the time of nail plugging. CONSTITUTION:A guide member 20 for guiding the drive of a nail A by a hammer rod is divided into multiple separable guide bodies 21, 22. Guide grooves for guiding the drive of the nail A are formed on the mating faces of the guide bodies 21, 22 to surround the shaft center of the hammer rod. Since the guide member 20 is made cylindrical as a whole, the nail A can be straightly driven. When the guide bodies 21, 22 are separated, a plugged nail can be simply removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable nailing machine such as a gas explosion type, a compressed air type, an electric type or an explosive type.
The present invention relates to an improvement in a guide device for guiding the hammering out of a nail by a hammer rod.

[0002]

2. Description of the Related Art In general, a nailing machine of this type can incorporate a large number of nails in the front portion of a main body having a hammer rod that is projected momentarily by the explosive force of gas or compressed air. It is well known that the nail loading section is provided, the nails of the nail loading section are supplied to the front of the hammer rod one by one, and the nails are driven by the hammer rod without needing to present a document. Is the street.

When hammering a nail with a hammer rod, a guide member for holding the nail concentrically with the hammer rod is required. Conventionally, as shown in FIG. A tubular guide member 40 having a circular guide hole 40a through which the rod B passes, and FIG.
, A guide member 41 having a semicircular guide groove 41a is used.

[0004]

Among these two modes, the tubular guide member 40 shown in FIG. 8 (a) prevents the nail A from falling down when the hammer A pushes out the nail A. Although the nail A can be driven straight, and the nail A can be prevented from jumping out in the direction intersecting the axis of the nail A, on the other hand, the guide member 4
When nail clogging occurs in 0, the nail A cannot be removed unless it is slid forward or backward, so there is a problem that the removal of the nail A when the nail clogging is troublesome.

On the other hand, the open type guide member 41 shown in FIG. 8B has an advantage that the nail A can be easily removed even if the nail is clogged because the guide groove 41a is opened over the entire length. However, on the other hand, since it is not possible to prevent the nail A from inclining, the nail A may pop out in a direction orthogonal to the axis of the hammer rod B or the nail A may be driven obliquely. was there.

[0006] It is an object of the present invention to provide a guide device capable of driving a nail straightly and removing the nail very easily when the nail is clogged.

[0007]

In order to achieve this object, the present invention provides a "main body having a hammer rod for hammering out a nail and one nail at a time in front of the hammer rod. A nailing machine comprising a nail loading section and a guide member for guiding the hammering out of a hammer by the hammer rod, a plurality of the guide members can be separated along a direction orthogonal to the axis of the hammer rod. Each guide body is provided with a guide groove on the mating surface of each guide body for guiding the hammering of the nail by the hammer rod so that each guide groove surrounds the axial center of the hammer rod. Then, it is formed ”.

[0008]

According to this structure, the guide groove of each guide body is formed so as to surround the extension line of the axial center of the hammer rod in the state where the plurality of guide bodies are superposed. Since the guide member has a tubular shape as a whole, when the nail is driven by the hammer rod, the nail is not inclined and driven, and the nail does not pop out in the direction orthogonal to the axis.

Further, when the guide member is clogged with nails, when the guide members are separated from each other, the guide groove of each guide member is opened over its entire length, so that the nail can be removed very easily. You can Therefore, according to the present invention, it is possible to drive the nail straight, prevent the nail from popping out in a direction orthogonal to the axis of the nail when the nail is driven, and remove the jammed nail very easily. It has the effect that can be achieved all at once.

According to the second aspect of the present invention, the upper and lower guide members can be brought into close contact with and separated from each other by a one-touch operation of merely moving the nail loading portion up and down with respect to the main body portion. Has the effect of making it even easier.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment in which the present invention is applied to a gas explosion type nailing machine will be described with reference to the drawings (FIGS. 1 to 7). FIG. 1 shows the whole of the nail driving machine. The nail driving machine includes a main body 1 having a handle 2. The main body 2 has a magazine 3 as an example of a nail loading section in a side view. The guide device 4 is mounted in a tilted posture, and further, the guide device 4 is mounted on the upper end of the magazine 3 and the front end of the main body 1. The handle 2 is provided with a trigger 2a.

The main body 1 is provided with a hollow main body case 5, a cylinder 6 extending in the front-rear direction is built in the main body case 5, and a piston 7 slidably inserted into the cylinder 6.
An elongated hammer rod 8 for driving out the nail A is fixed to the. The piston 7 is, for example, Japanese Examined Patent Publication No. 64-9149.
As described in Japanese Patent Publication No. 1-34753 and Japanese Patent Publication No. 1-34753, the gas explosively causes the gas to project instantaneously.

As shown in FIG. 3, the front end surface of the body case 5 is open, and the header 9 is inserted into the opening of the body case 5.
Is attached from the inside, and the front end of the cylinder 6 is fixed to the header 9. A spring 10 for absorbing shock is inserted between the header 9 and the cylinder 6, and a cushion material 11 for the piston 7 is provided at the inner front end of the cylinder 6.
I am wearing.

The magazine 3 is formed in a hollow shape by opening a pair of left and right housings 12 and screwing them together (see FIG. 2). Insert the nail connecting body 13 that accommodates a large number of nails A aligned horizontally and insert the magazine 1
The nails A are supplied to the front of the hammer rod 8 one by one by urging the nail connecting body 13 upward by a spring provided in the nail 3.

As shown in FIG. 3 (a), the heads of the plurality of nails A are partially cut off and the nails are gradually displaced in the axial direction, so that the shaft portions are superposed in close contact with each other. The many nails A are integrally connected by a pair of front and back paper tapes 15. Engaging portions 16 are formed on the upper and lower sides of the rear surface of the magazine 3, and the upper and lower engaging portions 16 are formed in an engaging groove 17 formed so as to extend in an inclined shape at the front end of the main body case 5 and the front end of the handle 2. By being fitted from below, the magazine 3 can be moved up and down in the main body 1 so that it cannot be pulled out forward. In addition, by forming the tip of the handle 2 into two pieces so that the engaging portion 16 of the magazine 3 can be sandwiched, and rotating the knob 18 to tighten the engaging portion 16 at the lower end of the magazine 3 with the tip of the handle 2. The magazine 3 is fixed to the main body 2.

Next, the guide device 4 will be described with reference to FIGS. The guide device 4 includes a guide member 20 including an upper guide body 21 and a lower guide body 22, and a nose body 23 made of synthetic resin and fitted to the tip ends of the upper and lower guide bodies 21 and 22 in a superposed state. I have it. The upper and lower guide bodies 21, 22 are formed such that the latter half of the upper half has a plate shape and the first half has a semicircular cross section. The guide grooves 24, 25 having a semicircular cross section for guiding the embossing are formed so that the guide grooves 24, 25 surround the extension line of the axial center of the hammer rod 8. Therefore, the upper and lower guide bodies 2
Nail A and hammer rod 8 at the mating surfaces of 1, 22
A hole with a circular cross section is formed.

A pair of left and right engaging projections 22a are provided on the lower guide body 22 so as to project downward.
Are fitted into positioning recesses 26 formed on the upper surfaces of the left and right housings 12 of the magazine 3, and in this state, the left and right housings 12 are fastened to the lower guide body 22 by horizontal screws 27. A pair of left and right rocket pins 28 inclined at the same angle as the inclination angle of the magazine 3 are fitted in the lower guide body 22 in a state of protruding upward. A passage 29 for guiding the nail A in the magazine 3 toward the guide groove 24 of the upper guide body 21 is formed in the rear half of the lower guide body 22 so as to open vertically and backwardly. The front end surface 29a of the passage 29 is formed in an inclined shape (see FIG. 4A).

The depth of the guide groove 24 of the upper guide body 21 is made slightly deeper than the depth of the guide groove 25 of the lower guide body 22. This is because the tip of the nail A is the lower guide body 22.
This is to prevent the front end surface 29a of the passage 29 from hitting. As shown in FIGS. 3A and 3C, the rear end portion of the upper guide body 21 is fastened to the header 9 of the main body portion 1 with a screw 30.

A frame portion 21a extending in the front-rear direction is formed on the upper surface of the upper guide body 21, and a rectangular nut 31 is non-rotatably fitted in the frame portion 21a, while the frame portion 21a extends downward from the header 9 of the body portion 1. The probe 32 is extended forward, and the lower probe 32 is superposed on the upper probe 33 projecting rearward from the nose body 23.
32 to the rectangular nut 31 in the frame portion 21a with a screw 34
It is concluded in.

The tip of the upper probe 33 is formed in a substantially cylindrical shape and is fitted into the half-split cylindrical portions of the upper and lower guide bodies 21, 22. The tip of the lower probe 33 is fitted to the nose body 2.
3 is detachably attached. Therefore, the upper and lower guide bodies 2
The front portions of the Nos. 1 and 22 are held by the front ends of the nose body 23 and the upper probe 33 so that they cannot be vertically separated from each other. In addition, nose body 2
3 can be replaced according to the surface shape of the member for nailing work.

The lower surface of the lower probe 32 and the upper surface of the lower probe 33 are formed in a sawtooth shape so as to mesh with each other. The upper guide body 21 includes the lower guide body 2
A pair of left and right positioning holes 35 into which the rocket pins 28 protruding from 2 are fitted are formed. A recess 24a into which the head of the nail A supplied from the magazine 3 is fitted is formed in a portion of the guide groove 24 of the upper guide body 21 near the rear end (see FIGS. 4 and 7).

In the above structure, the handle 2 is gripped and the nose body 23 is pressed against the surface of the mating member to trigger the trigger 2a.
When pulling, the hammer rod 8 moves forward, and the nail A is driven through the holes surrounded by the guide grooves 24 and 25 of the upper and lower guide bodies 21 and 22. In this case, since the front halves of the upper and lower guide bodies 21 and 22 are cylindrical as a whole, the nail A can be driven straight and the nail A does not project downward.

On the other hand, when the upper and lower guide bodies 21 and 22 are clogged with nails, as shown in FIG.
Is loosened to release the fastening of the upper and lower probes 33 and 32, the nose body 23 is removed from the upper and lower guide bodies 21 and 22, while the knob 18 of the handle 2 is loosened and the magazine 3 is slid downward. By sliding 3 downward, the guide groove 2 of the upper and lower guide bodies 21, 22
Since the nails 4, 25 are exposed over their entire length, the jammed nail A can be removed extremely easily.

In the above embodiment, the guide member is divided into two upper and lower guide members, but the guide member may be separated in the left and right directions.
The guide member may be composed of three or more guide bodies. Further, the nail loading portion is not limited to the detachable magazine type as in the embodiment, but may be another type. Furthermore,
It goes without saying that the present invention can be applied not only to the gas explosion type nail driving machine but also to other driving type nail driving machines such as a pneumatic type, an electric type or an explosive type.

[Brief description of drawings]

FIG. 1 is a right side view of a nailing machine.

FIG. 2 is an exploded perspective view of a lower guide body and a magazine.

3A is a partially cutaway side view of a main part, FIG. 3B is a sectional view taken along the line aa of FIG. 3A, FIG. 3C is a sectional view taken along the line CC of FIG. 3A, and FIG. [Fig. 4] is a cross-sectional view showing a mounted state of a rocket pin.

FIG. 4A is a vertical cross-sectional side view of a main part, and FIG. 4B is a front view taken along the line bb of FIG.

FIG. 5 is a diagram showing a disassembled state.

FIG. 6 is an exploded perspective view of a guide device.

FIG. 7 is an exploded perspective view of the guide device turned upside down.

FIG. 8 is a diagram showing an outline of a conventional technique.

[Explanation of symbols]

 A nail 1 main body 2 handle 3 magazine as an example of nail loading portion 5 main body case 8 hammer rod 20 guide member 21 upper guide body 22 lower guide body 23 nose body 24, 25 guide groove

Claims (2)

[Claims] 1. A main body portion having a hammer rod for hammering out a nail, a nail loading portion for feeding one nail toward the front of the hammer rod, and a nail hammering-out guide by the hammer rod. In the nailing machine, the guide member is composed of a plurality of guide bodies that can be separated along a direction orthogonal to the axis of the hammer rod, and a mating surface of each guide body is provided. In the nailing machine, guide grooves for guiding the hammering out of the hammer rod are formed so that each guide groove surrounds an extension line of the axis of the hammer rod. Nailing guide device in the. 2. The nail loading section according to claim 1,
While being vertically slidably mounted on the main body, the guide member is composed of an upper guide body and a lower guide body that can separate the guide member in the vertical direction. The upper guide body of the upper and lower guide bodies is the main body. The lower guide body is fixed to the nail loading portion, and the upper and lower guide bodies are brought into close contact with and separated from each other when the nail loading portion is vertically slid on the main body portion. Nailing guide device in the.