JP2011206856A - Driving tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably regulate a position or a tilt of a driving tool to reduce failures in driving since failures in driving need to be further reduced as a direction to be regulated is limited to a rotating direction of a regulating member and the regulation of the position or the tilt is insufficient as a result, while the driving tool such as a nailing machine has been conventionally provided, in which the regulating member for regulating the position or the tilt of the driving tool is disposed rotatably in the vicinity of an ejection port so that a thin nail having a small head can be driven straight from the center of the ejection port.SOLUTION: A fore-and-aft tilt of a driving tool n is regulated by a first regulating member 10 rotatably supported by a driver guide 4. In addition, a second regulating member 20 in an annular shape is provided on a nose adapter 30 mounted on a contact lever 9. The position or the tilt of the driving tool n is regulated along an entire circumference by the second regulating member 20.

Description

  The present invention relates to a hand-held tool that a user uses in his / her hand, and relates to a driving tool such as a compressed air drive type nailing machine.

For example, a compressed air drive type driving tool is provided in a state in which a piston that is reciprocated by compressed air is internally provided and protrudes to a lower portion of the main body, and a driver for hitting a driving tool attached to the piston is inserted therethrough. A driver guide having a driving path, a handle portion extending from the side of the main body to the side, and a magazine capable of loading a large number of driving tools supplied one by one into the driving path.
When a trigger-type switch lever provided near the base of the handle is pulled with a fingertip, compressed air is supplied to the cylinder upper chamber of the main body and the piston moves downward. When the piston is moved down by the thrust of the compressed air, the driver is moved down in the driving passage, and a single driving tool is hit and driven out from the injection port during the downward movement.
In this type of driving tool, the length and thickness (size of the head) of the driving tool usually corresponds to a plurality of types. On the other hand, the diameter (thickness) of the driving path in which the driving tool is moved down by being hit is fixed. For this reason, the tip position of the thin driving tool is likely to vary in the driving path corresponding to the thick driving tool. In particular, the shorter the driving tool, the easier it is to tilt in the driving path. In some cases, the head of the driving tool is displaced with respect to the tip of the driver, so that it is not hit in the correct posture (straight with respect to the moving direction of the driver). As a result, there was a case where it causes a driving failure.
2. Description of the Related Art Conventionally, a technique for providing a restricting member at an injection port in order to restrict the position or inclination of a driving tool has been publicly known. Techniques related to conventional regulating members are disclosed in the following patent documents. The conventional restricting member is supported so as to be rotatable in the direction of advancement and retreat in the driving passage at the injection port, and is spring-biased in the direction of narrowing the driving passage width by entering the rotating tip side into the driving passage. It has become. According to such a restricting member, even if it is a thin driving tool or a short driving tool, the tip or the head of the driving tool comes into contact with the head and the position thereof is controlled immediately before being hit from the injection port. It is launched straight in the posture.

JP 2004-330366 A

However, the conventional first restricting member has a problem to be further improved. In the above-described conventional first restricting member, since the rotation direction with respect to the driving path is fixed in one direction, it is difficult to control the position or inclination of the driving tool in the direction intersecting with this, and as a result, it is particularly small. The driving failure of the diameter driving tool could not be completely eliminated.
Therefore, an object of the present invention is to prevent a driving failure with a higher probability than before by more reliably regulating the position or inclination of the driving tool.

For this reason, this invention was set as the driving tool of the structure described in each claim of a claim.
According to the driving tool of the first aspect, the position or inclination (hereinafter, also simply referred to as inclination) of the driving tool moving in the driving passage is first regulated in one direction by the first regulating member, and then the second Since the restriction member also restricts the direction around the axis of the driving tool and intersects the restriction direction by the first restriction member, the inclination of the driving tool can be more reliably restricted than in the past, As a result, even with a small-diameter driving tool, it is possible to prevent the driving failure with a higher probability than in the past.
According to the driving tool of the second aspect, the inclination of the driving tool is more reliably and smoothly regulated from the first regulating member through the second regulating member.
According to the driving tool of the third aspect, the inclination of the driving tool is more reliably and smoothly regulated from the first regulating member through the second regulating member.
According to the driving tool of the fourth aspect, the first restricting member is held at the restricting position in which the rotation tip side is made to enter the driving passage, and thereby the tilt of the driving tool can be surely restricted. At the same time, the impact of the driving tool can be absorbed by rotating in the retracting direction against the urging force, whereby the durability of the driving tool can be enhanced.
According to the driving tool of the fifth aspect, it is possible to prevent the driving material from being damaged when the driver guide is pressed against the driving material (material into which the driving tool is driven).

1 is an overall side view of a driving tool according to an embodiment of the present invention. It is the (II) part enlarged view of FIG. 1, Comprising: It is the longitudinal cross-sectional view of injection port vicinity. It is a longitudinal cross-sectional view of a single nose adapter. It is the figure which looked at the nose adapter simple substance from the material contact surface side (arrow (IV) direction of FIG. 3). It is a perspective view of a nose adapter simple substance. It is a figure which shows the nose adapter end of another form. This figure is also a view seen from the material contact surface side as in FIG. It is a longitudinal cross-sectional view of the 1st control part and the injection port periphery of the state which removed the nose adapter.

Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the entire driving tool 1 according to the present embodiment. The driving tool 1 according to the present embodiment includes a first restricting member 10 and a second restricting member 20 for controlling the inclination of the driving tool n (inclination with respect to the moving direction of the driver 8) in the vicinity of the injection port and driving straight. Since it has the characteristic in the point provided, and a basic structure as other driving tools does not require a change in particular, detailed description is abbreviate | omitted. In this specification, in the vertical direction of the member or configuration, the driving direction of the driving tool n (lower side in FIG. 1) is the lower side, and the opposite direction is the upper side.
The driving tool 1 is a compressed air driven nailing machine, and includes a main body 2 with a piston 7 therein, a handle 3 that extends from the side of the main body 2 to the side, and a lower portion of the main body 2 downward. A cylindrical driver guide 4 provided in a protruding state, and a magazine 5 attached between the handle portion 3 and the driver guide 4 in a spanned state.
An impact driver 8 is attached to the lower surface side of the piston 7. The driver 8 is an elongated rod-like member and extends downward from the center of the lower surface of the piston 7 downward. The tip of the driver 8 enters the driving path 4 a of the driver guide 4.

An air hose for supplying compressed air as a drive source is connected to the tip of the handle portion 3. In the figure, only the plug 3a for connecting the air hose is shown. A trigger type switch lever 6 that is pulled by a user with a fingertip is disposed near the base of the handle portion 3. The pulling operation of the switch lever 6 supplies compressed air to the main body 2. When the compressed air is supplied to the main body 2, the piston 7 moves down and the driver 8 moves down in the driving passage 4 a, and the head of the driving tool n is hit by the driver 8 during the downward movement. . The hit driving tool n is driven out from the injection port 4 b at the lower end of the driver guide 4. The driven tool n is driven into the driving material W.
The driver guide 4 is provided with a contact lever 9. The contact lever 9 is supported along the driver guide 4 so as to be relatively displaceable up and down. The upper part of the contact lever 9 reaches the vicinity of the switch lever 6. Further, the contact lever 9 is biased so as to protrude slightly downward from the injection port 4b. When the contact lever 9 is brought into contact with the driving material W and the driving tool 1 is pressed, the contact lever 9 moves up relative to the driver guide 4, thereby enabling the pulling operation of the switch lever 6. . If the contact lever 9 is not pressed against the driving material W and moved up relatively, the pulling operation of the switch lever 6 becomes invalid and an inadvertent driving operation in the main body 2 is prevented in advance. It has become.
A nose adapter 30 is attached to the lower end of the contact lever 9. Details of the nose adapter 30 will be described later.
A driving tool n is supplied into the driving passage 4 a of the driver guide 4 one by one in conjunction with the driving operation of the main body 2. The magazine 5 is loaded with a connected driving tool in which a number of driving tools n to n are connected in parallel in a wound state. When the distal end side of the connecting driving tool is pitch-fed in conjunction with the driving operation of the main body portion 2, the driving tools n are supplied one by one into the driving passage 4a. In the figure, only the driving tool n supplied into the driving passage 4a is shown, and the connecting driving tool is omitted.

A first restricting member 10 is supported in the vicinity of the injection port 4 b of the driver guide 4 so as to be rotatable in the left-right direction in FIGS. 1 and 2 via a rotation support shaft 11. In the following description, for the sake of convenience, the left side in FIGS. 1 and 2 is referred to as the front side, and the right side is also referred to as the rear side. Therefore, the user holding the handle portion 3 is located on the rear side (right side in FIG. 1) of the driving tool 1.
The first regulating member 10 is supported in the vicinity of the injection port 4b of the driver guide 4 and on the rear side with respect to a position around the injection port 4b. The first restricting member 10 includes a lower restricting portion 10a and an upper supporting portion 10b. The restricting portion 10a is provided with an arc-shaped restricting surface 10c that is curved around the central axis J0 of the driving passage 4a. In the case of the present embodiment, this restricting surface 10c constitutes a part of the injection port 4b. The support part 10b has a bifurcated shape extending in parallel with each other from the upper part of the restriction part 10a. A support pedestal 4c is provided on the side of the driver guide 4 on the rear side (the right side in FIG. 2). The first restricting member 10 is coupled via a rotation support shaft 11 with the support base portion 4c sandwiched between the support portions 10b and 10b. The rotation support shaft 11 passes through the support holes of both the support portions 10b and 10b and the support hole 4d of the support base portion 4c.
Buffer members 12 made of urethane rubber each having an annular shape are mounted in the support holes of both the support portions 10b and 10b. A rotating support shaft 11 is inserted through the inner peripheral sides of both the buffer members 12 and 12. Since the first restricting member 10 is supported via the buffer members 12, 12, the first restricting member 10 has an impact buffering function for the driving tool n.

The first restricting member 10 is biased by a compression spring (not shown) in a direction (front side) in which the restricting surface 10c is driven into the passage 4a. The compression spring is interposed between the upper portion of the first restricting member 10 and the side portion of the driver guide 4. Due to the urging force of the compression spring, the first restricting member 10 is held in a state where the restricting surface 10c is always driven and positioned in the passage 4a. As shown in FIG. 2, the restricting surface 10c is held at a position slightly inclined in the direction of narrowing the driving passage 4a toward the lower end portion thereof.
The restriction surface 10c of the first restriction member 10 is formed in an arcuate surface that curves around the central axis J0 of the driving passage 4a. For this reason, when the tip or head of the driving tool n moving down the driving path 4a is brought into sliding contact with the restriction surface 10c, the tip or head of the driving tool n is guided to the center side of the driving path 4a. The The tip or head of the driving tool n is guided to the center side by the restriction surface 10c of the first restricting member 10, whereby the position of the tip and head of the driving tool n is restricted to the center side of the driving passage 4a. Thus, the inclination of the driving tool n is regulated and the driving tool n is driven straight.
Regulating surface 10c of first regulating member 10 exhibits its guiding function regardless of the length and thickness of driving tool n. When the head has a larger diameter as a result of the thick driving tool n, the first restricting member 10 is pushed by the head and the lower end side (rotating front end side) is withdrawn from the driving path 4a. Tilt in the direction (counterclockwise direction indicated by the white arrow in FIG. 2). This tilting operation is performed around the support shaft 11 against the urging force of the compression spring.

According to the first restricting member 10 described above, the inclination of the driving tool n is a part of the entire circumference around the axis J0 of the injection port 4b, and is mainly restricted with respect to the inclination in the front-rear direction. The driving tool 1 of the present embodiment has a second regulating member 20 that can regulate the inclination of the entire circumference around the axis J0 of the driving tool n in order to compensate for a direction that is not sufficiently regulated by the first regulating member 10. It has. The second restricting member 20 is provided on a nose adapter 30 attached to the tip of the contact lever 9. 3 to 5 show the nose adapter 30 as a single unit. The nose adapter 30 is formed in a generally cylindrical shape using resin as a raw material. In the case of the present embodiment, the second regulating member 20 is integrally formed on the inner peripheral side thereof.
The nose adapter 30 can be easily attached to and detached from the tip of the contact lever 9 by utilizing the elasticity of the material. FIG. 7 shows a state where the nose adapter 30 is removed. Even when the nose adapter 30 is removed and only the first regulating member 10 is functioning, the driving tool 1 can be used for driving operation.
An escape recess 30 a is provided on the upper surface of the rear portion of the nose adapter 30. By aligning the relief recess 30a with the rear portion of the contact lever 9, the position (orientation) about the axis J0 that can be attached to the contact lever 9 of the nose adapter 30 is set at one location.
The second restricting member 20 is formed in an annular shape using a metal material having sufficient hardness and durability for the driving tool n. The driving tool n is injected through the inner peripheral hole (restriction hole 20b) of the second restriction member 20.
As shown in FIG. 3, a restriction R portion 20 a having a relatively large radius is provided at the mouth on the upper side of the restriction hole 20 b of the second restriction member 20. The restriction R portion 20a restricts the position of the head mainly of the driving tool n. The radius of the restriction R portion 20a is appropriately set according to the driving tool n assumed to be used. As shown in FIG. 3, in this embodiment, the restriction R portion 20a is formed with a radius larger than (head diameter n2−body diameter n1) / 2 when the body diameter n1 and the head diameter n2 of the driving tool n are set. Yes. For this reason, the head of the driving tool n is surely slidably brought into contact with the restriction R portion 20a and the position of the driving tool n is restricted, so that the inclination of the driving tool n is reliably restricted.
The central axis J1 of the restriction R portion 20a and the restriction hole 20b is on the front side with respect to the central axis J0 of the driving passage 4a of the driver guide 4, and the entry direction of the first restriction member 10, that is, the restriction direction of the driving tool n. It is slightly eccentric. For this reason, the front-end | tip part and head part of the driving tool n which were position-controlled by the 1st control member 10 are guided to the 2nd control member 20 more reliably and smoothly.
Further, the hole diameter (diameter) D of the restriction hole 20b is set to be smaller than the thickness dimension (height dimension) L of the second restriction member 20 (D <L).
A substantially entire range on the lower surface side of the second regulating member 20 is covered with a resin layer. For this reason, the entire area of the driving material abutting surface 30b that abuts against the driving material W of the nose adapter 30 is a resin layer, thereby preventing damage such as damage to the material. ing. The driving tool passage hole 30c provided in the driving material contact surface 30b is provided coaxially with the restriction hole 20b of the second restriction member 20.

According to the driving tool 1 of the present embodiment configured as described above, the first regulating member 10 that guides the driving tool n can be rotated in the front-rear direction via the rotation support shaft 11 on the upper side in the driving direction, and The rotating tip is biased in the direction (front side) to be driven into the driving passage 4a by the biasing force of the compression spring. When the tip and head of the driving tool n are brought into sliding contact with the regulating surface 10c of the first regulating member 10, the driving tool n shifted rearward is regulated to the center side (front side) of the driving path 4a. By restricting the inclination, it is ejected straight from the injection port 4b.
In addition, the driving tool 1 of the present embodiment includes a second restricting member 20 in addition to the first restricting member 10 described above. A restriction R portion 20 a for mainly restricting the position of the head of the driving tool n is provided at the mouth of the restriction hole 20 b of the second restriction member 20. The restriction R portion 20a restricts the position of the head of the driving tool n within a range over the entire circumference around the axis J1.
From this, by making the second restricting member 20 function in addition to the first restricting member 10, it is possible to more reliably restrict the inclination of the small-diameter driving tool n where the finish is particularly important, As a result, it is possible to prevent driving defects with a higher probability than in the past.
The first restricting member 10 is disposed behind the driver guide 4 and on the front side as viewed from the user. Usually, in the driving operation, the user looks into the vicinity of the injection port 4b from the front side of the driver guide 4 and confirms the driving position. In this respect, since the first restricting member 10 of the present embodiment is disposed on the front side of the driver guide 4, the first restricting member 10 becomes an obstacle when the user looks into the driving position. There is no, and good visibility of the driving site is secured.
Further, since the second restricting member 20 is provided on the nose adapter 30 and the inclination of the driving tool n is restricted at a position very close to the driving material contact surface 30b (the driving position), this point also has a higher probability. With this, it is possible to reduce driving defects.

Various modifications can be made to the embodiment described above. For example, the case where the restriction hole 20b of the second restriction member 20 is a circular hole has been illustrated, but instead of this, the restriction hole 20c is changed to a long hole-shaped restriction hole 20c having a long diameter in the front-rear direction as shown in FIG. Also good. The restriction hole 20c according to the second embodiment is also provided around the axis line J1 slightly decentered to the front side with respect to the axis line J0. In the regulation hole 20c according to the second embodiment, the minor axis in the vertical direction perpendicular to the major axis in the front-rear direction in FIG. 6 is set to the same size as the hole diameter D of the regulation hole 20b according to the first embodiment. . According to the restriction hole 20c which is a long hole shape long in the front and rear direction and slightly decentered to the front side with respect to the axis J0, the position and inclination in the front and rear direction are restricted by the first restriction member 10, so that the second In the restricting member 20, the restricting accuracy can be relaxed in the front-rear direction, the position can be restricted in the direction intersecting this, and the inclination can be surely restricted.
In the illustrated configuration, the first restricting member 10 is illustrated as a configuration in which the restricting surface 10c forms a part of the injection port 4b at the tip of the driving passage 4a. It is good also as a structure which arrange | positions this control member and forms the perimeter of an injection port with the driver guide 4. FIG.
Furthermore, although the configuration in which the regulating surface 10c of the first regulating member 10 is curved in an arc shape is illustrated, it may be changed to a flat regulating surface.
Moreover, although the structure which arrange | positions the 1st control member 10 in the back side of the driver guide 4 was illustrated, you may arrange | position to the front side or may arrange | position to the left-right side part, and also a pair of front and rear or a pair of left and right You may arrange | position a 1st control member.

1 ... Driving tool (Compressed air nailing machine)
DESCRIPTION OF SYMBOLS 2 ... Main-body part 3 ... Handle part, 3a ... Hose connection plug 4 ... Driver guide 4a ... Driving path, 4b ... Injection port, 4c ... Support base part, 4d ... Support hole 5 ... Magazine 6 ... Switch lever 7 ... Piston 8 ... Driver 9 ... contact lever 10 ... first restricting member 10a ... restricting portion, 10b ... support portion, 10c ... restricting surface (arc-shaped curved surface)
DESCRIPTION OF SYMBOLS 11 ... Turning support shaft 12 ... Buffer member 20 ... 2nd control member 20a ... Control R part, 20b ... Control hole (circular hole), 20c ... Control hole (long hole)
D: Diameter of the restriction hole (diameter), L: Thickness dimension (height dimension)
30 ... Nose adapter 30a ... Relief recess, 30b ... Driving material contact surface, 30c ... Driving tool passage hole n ... Driving tool, n1 ... Body diameter, n2 ... Head diameter W ... Driving material J0 ... Center axis J1 of driving path ... Center axis of the regulating member 20

Claims (5)

A driving tool for driving a head of a driving tool supplied in a driving path of a driver guide with a driver to move down the driving path and driving out from an injection port,
The driver guide includes first and second regulating members that regulate the position or inclination of the driving tool,
The first restricting member is provided in a side portion of the driver guide so as to be able to advance and retreat into the driving path.
The second restricting member has an annular shape provided along an inner peripheral side of a nose adapter that can be attached to and detached from the injection port, and the position or inclination of the driving tool can be completely adjusted around the axis of the driving tool. Driving tool that can be controlled around the circumference. 2. The driving tool according to claim 1, wherein the driving passage hole of the second restricting member is deviated in a direction in which the first restricting member advances and retreats with respect to the driving passage of the driver guide. The driving tool I have in mind. The driving tool according to claim 1 or 2, wherein the driving passage hole of the second restricting member is formed in a long hole shape having a long diameter in the advancing and retracting direction of the first restricting member. 4. The driving tool according to claim 1, wherein the first restricting member is rotatable to the driver guide via a rotation support shaft on an upper side in the driving direction, and a rotation tip. A driving tool provided by urging the side in a direction to enter the driving path. The driving tool according to any one of claims 1 to 4, wherein a driving material contact surface of the nose adapter is covered with a resin.

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