Nail gun

Abstract

We provide a nail gun that can achieve weight reduction even when using metal doors. [Solution] The device is equipped with a feed path 35 that guides the connecting nails from the magazine 20 to the ejection path 12a. The magazine 20 has a magazine body 21 capable of accommodating the connecting nails and a magazine cap portion 22 that is attached to the magazine body 21 so as to be openable and closable. At least a portion of the feed path 35 is formed by a nose-side guide surface 12c of the nose portion 12 and a magazine cap-side guide surface 26c of the magazine cap portion 22.

Description

Technical Field

[0001] The present disclosure relates to a nail gun using connecting nails.

Background Art

[0002] This type of nail gun is configured such that connecting nails stored in a magazine are sequentially sent out to an injection path and driven in. The injection path is formed in a nose portion at the tip of the tool, and a feed path, which is a passage for the connecting nails, is formed between this injection path and the magazine. Note that it is common for the feed path and the injection path to be openable and closable by a rotatable door. By opening this door, maintenance work and the elimination of nail jams become easier.

[0003] In such a conventional structure, the feed path and the injection path are formed by the nose portion and the door (see Patent Document 1 and Patent Document 2).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a high-output nail gun, in order to ensure the durability when the nails vibrate, it is desirable that the nose portion and the door are made of a metal such as iron. However, when using an iron door, there are problems such as an increase in weight, which deteriorates the handling of the machine, and a deterioration in the balance during use.

[0006] Therefore, an object of the present disclosure is to provide a nail gun that can achieve weight reduction even when using a metal door. [Means for solving the problem]

[0007] A nail gun according to one aspect of the present disclosure is a nail gun comprising a magazine for accommodating linked nails, and a nose portion having a nail ejection path, wherein the nail gun is further comprising a feed path for guiding linked nails from the magazine to the ejection path, the magazine comprising a magazine body capable of accommodating linked nails and a magazine cap portion attached to the magazine body so as to be openable and closable, and at least a portion of the feed path is formed by a nose-side guide surface of the nose portion and a magazine cap-side guide surface of the magazine cap portion. [Effects of the Invention]

[0008] According to this disclosure, at least a portion of the feed path, which was conventionally formed by the nose portion and the door member, can be formed by the nose portion and the magazine cap portion. Therefore, even when a metal door member is used, the door member can be made smaller, resulting in weight reduction.

[0009] Furthermore, the "feed path" in this invention substantially supports the position of the nail. In other words, the "nose-side guide surface" and the "magazine cap-side guide surface" in this invention exert the effect of suppressing the tilt of the nail by contacting it. That is, parts that merely cover the nail do not constitute the "nose-side guide surface" and the "magazine cap-side guide surface". [Brief explanation of the drawing]

[0010] [Figure 1] This is a side view of a nail gun. [Figure 2] This is a side view of a nail gun with the magazine and door open. [Figure 3] This is a perspective view of a nail gun. [Figure 4] This is a magnified perspective view of a portion of the magazine cap area, seen from the underside. [Figure 5](a) Plan view of the metal component, (b) Side view of the metal component, (c) Perspective view of the metal component. [Figure 6] (a) A magnified view of a portion of the AA section in Figure 1, and (b) A magnified view of a portion of the longitudinal section near the nose. [Figure 7] (a) A diagram showing the state when the feed claw is retracted, and (b) A diagram showing the state when the feed claw is advanced. [Figure 8] This is a cross-sectional view showing a modified movable member. [Modes for carrying out the invention]

[0011] A nail gun 10 according to an embodiment of the present invention will be described with reference to the figures. In the following description, as shown in Figure 1, the direction in which the nails 50 are ejected will be described as "down," and the opposite direction to the down direction will be described as "up." Also, the direction perpendicular to the up and down direction, from the magazine 20 toward the nose portion 12 (nail feeding direction), will be described as "forward," and the opposite direction to the forward direction will be described as "backward." Also, as shown in Figure 6, the direction perpendicular to the up and down direction and the front and back directions, as seen from the perspective of the operator holding the nail gun 10, will be described as "left" (the direction in which the door member 15 and the magazine cap portion 22 open), and the opposite direction to the left will be described as "right."

[0012] The nail gun 10 according to this embodiment ejects nails 50 from an ejection port 14a formed at the tip of the machine. The structure of the nail gun 10 is well known and will not be described in detail, but it operates using compressed air, gas, electricity, etc. as a power source. The nail gun 10 is equipped with a trigger that can be operated by the operator, and when this trigger is operated, an internal drive mechanism (such as a piston cylinder mechanism or a spring mechanism) is activated and the nails 50 are driven in.

[0013] The above-described drive mechanism is incorporated in the body housing 11. As shown in FIG. 1, a nose portion 12 is integrally provided below the body housing 11. Inside the nose portion 12, an injection path 12a for the nail 50 is formed. Below the injection path 12a, an injection port 14a, which will be described later, is provided. When the drive mechanism operates, the nail 50 waiting in the injection path 12a is driven out. Specifically, inside the body housing 11, a driver for driving out the nail 50 is slidably guided in the direction of the nose portion 12. When the drive mechanism operates, the driver slides impulsively in the direction of the nose portion 12, and the nail 50 waiting in the injection path 12a inside the nose portion 12 is driven out by the tip of the driver.

[0014] Note that at least a part of the injection path 12a is constituted by the nose portion 12. The injection path 12a may be constituted only by the nose portion 12, or may be constituted by combining the nose portion 12 and another member (for example, a door member 15, which will be described later).

[0015] At the tip of the nose portion 12 according to the present embodiment, a contact member 14 is provided slidably. This contact member 14 is connected to a contact arm provided so as to be reciprocally movable vertically with respect to the body housing 11, and moves integrally with the contact arm. In the natural state before driving, the contact member 14 is biased so as to protrude in the tip direction, and in this state, the nail 50 cannot be driven. On the other hand, when the tip of the contact member 14 is pressed against the material to be driven, the contact arm moves together with the contact member 14, the safety mechanism is released, and driving of the fastener becomes possible.

[0016] The inside of this contact member 14 communicates with the injection path 12a. Further, at the tip of the contact member 14, an injection port 14a, which is an outlet through which the nail 50 is driven out, is open. Therefore, the nail 50 driven out by the drive mechanism passes through the injection path 12a and is ejected from the injection port 14a.

[0017] Behind the nose portion 12, a magazine 20 for accommodating connecting nails formed by connecting a plurality of nails 50 is connected. The connecting nails accommodated in the magazine 20 are drawn out toward the nose portion 12 and set in the feeding path 35. The feeding path 35 is a passage for guiding the connecting nails from the magazine 20 in the direction of the injection path 12a. In the feeding path 35, the posture of the nail 50 is substantially supported, and the inclination and vibration of the nail 50 are suppressed. Specifically, the feeding path 35 satisfies all of the following (1) to (3). (1) Guide the body portion 50b of the nail 50 and suppress the inclination of the nail 50. (2) Guide the body portion 50b of the nail 50 and regulate the movement of the nail 50 in the left - right direction. (3) Guide the body portion 50b of the nail 50 with a width less than or equal to the diameter of the head portion 50a of the nail 50 and suppress the nail 50 from falling off the feeding path 35. The connecting nails set in the feeding path 35 are automatically supplied to the injection path 12a of the nose portion 12 by a feeding mechanism 30 described later.

[0018] The magazine 20 is formed in a cylindrical shape so that coiled connecting nails can be loaded. As shown in FIG. 2, the magazine 20 includes a magazine body 21, a magazine cap portion 22, and a support member 23.

[0019] The magazine body 21 is arranged behind the nose portion 12 and is configured to accommodate connecting nails. The magazine body 21 may be fixed immovably to the nose portion 12 or may be movable relative to the nose portion 12. When the magazine body 21 is made immovable relative to the nose portion 12, it may be indirectly fixed to the nose portion 12 via another member. Also, by fixing the magazine body 21 to a piston - cylinder mechanism 31 movable relative to the nose portion 12, the magazine body 21 may be movable relative to the nose portion 12. The magazine body 21 is formed in a semi - cylindrical shape and forms a cylindrical accommodation space in combination with the magazine cap portion 22.

[0020] The magazine cap portion 22 is attached to the magazine body 21 so as to be openable and closable. As shown in Figure 3, a magazine pivot shaft 22b extending in a substantially front-to-back direction may be provided near the lower end of the magazine cap portion 22. The magazine cap portion 22 is rotatably attached to the magazine body 21 via this magazine pivot shaft 22b. As shown in Figure 2, the magazine cap portion 22 can be opened by rotating it downwards by approximately 180 degrees. When the magazine cap portion 22 is opened, the inside of the magazine 20 is opened, making it possible to load connecting nails.

[0021] The magazine cap portion 22 comprises a semi-cylindrical semi-tube portion 22a and a guide-forming portion 22c that protrudes forward from the semi-tube portion 22a. The semi-tube portion 22a is the part that combines with the magazine body 21 to form a cylindrical storage space. The guide-forming portion 22c is the part that forms part of the feed path 35. This guide-forming portion 22c will be described in detail later.

[0022] The support member 23 is a component for attaching connecting nails and is positioned in the space for housing connecting nails, which is composed of the magazine body 21 and the magazine cap portion 22. The support member 23 has a post portion 23a erected in the center of a circular base plate portion 23b on which the connecting nails are placed. The height of this support member 23 can be adjusted by rotating it. This allows the position in which the nails 50 are supported to be changed to match the total length of the nails 50 loaded into the magazine 20.

[0023] The magazine body 21 and support member 23 described above are made of synthetic resin. The magazine cap 22 is also made of synthetic resin, except for the metal member 25 which will be described later. In other words, the magazine 20 is lightweight because its main parts are made of synthetic resin. Furthermore, it is made of transparent synthetic resin, allowing the contents to be visually inspected.

[0024] Next, we will explain the feeding path 35 of the nail 50.

[0025] As shown in Figure 2, the nose section 12 includes a guide plate section 12b that extends rearward from the injection path 12a. This guide plate section 12b has a nose-side guide surface 12c that constitutes either the left or right side (in this embodiment, the right side) of the feed path 35. The nose-side guide surface 12c is the surface that supports the body 50b of the nail 50 placed in the feed path 35. The nose-side guide surface 12c supports the nail 50 so that it does not tilt to the right.

[0026] Furthermore, a guide groove 12d is formed on the upper part of the nose-side guide surface 12c to guide the head 50a of the nail 50. The guide groove 12d extends along the feed path 35. As shown in Figure 6(b), the guide groove 12d holds the head 50a of the nail 50 to prevent it from falling. With this configuration, the guide groove 12d restricts the vertical movement of the nail 50 and guides its movement in the nail feeding direction.

[0027] The nose-side guide surface 12c described above should preferably be formed with sufficient length in the vertical direction so that it can support the nail 50 up to near the tip. However, a hole 12e is formed in the nose-side guide surface 12c. By forming this hole 12e, the area of ​​the nose-side guide surface 12c can be secured while reducing the weight of the machine. Furthermore, the feed mechanism 30, which will be described later, is located behind (to the right of) this hole 12e. The feed claws 32 and check claws 33, which are part of the feed mechanism 30, can move in and out of the feed path 35 through the hole 12e in the nose-side guide surface 12c.

[0028] As shown in Figure 1, a door member 15 is provided on the left side of the nose portion 12. The door member 15 in this embodiment is made of metal. The door member 15 is attached to the nose portion 12 so as to be openable and closable. By opening this door member 15, the injection path 12a and the feed path 35 can be opened. The door member 15 rotates around a shaft 15a provided near its front end. This shaft 15a extends in the vertical direction, and the door member 15 is left-opening and rotatable in the front-rear direction.

[0029] The door member 15 is equipped with an operating part 16. The operating part 16 is for releasing the lock on the door member 15 and is provided so that it can be operated by an operator. In this embodiment, the operating part 16 is mounted on the door member 15 so as to be vertically movable and is biased upward by a biasing means (such as a spring) not shown. When an operator pushes down the operating part 16 against the biasing force of this biasing means, a pin 17 fixed to the operating part 16 moves downward. The upper end of this pin 17 can be engaged with an engagement hole provided on the nose portion 12 side. As shown in Figure 1, when the door member 15 is closed, the pin 17 is engaged with the engagement hole and the closed state of the door member 15 is maintained (the door member 15 is locked). If the operating part 16 is pushed down in this state, the pin 17 will come out of the engagement hole (the door member 15 will be unlocked), and the door member 15 can be opened.

[0030] Furthermore, the means for locking the door member 15 is not limited to the above-described embodiment, and any means can be used. For example, a locking claw or a screw may be used instead of the pin 17.

[0031] An engaging portion 15c protrudes diagonally upward and backward from the rear end of the door member 15 (see Figures 1, 2, and 6(b)). This engaging portion 15c is the part that engages with the magazine cap portion 22 in order to keep the magazine cap portion 22 closed. When the door member 15 is closed after the magazine cap portion 22 has been closed, the engaging portion 15c of the door member 15 engages with the magazine cap portion 22, and the magazine cap portion 22 can be kept in the closed position. In other words, when the door member 15 is locked, the magazine cap portion 22 is also locked in the closed position at the same time.

[0032] As shown in Figure 1, when the door member 15 is closed, it is positioned opposite the guide plate portion 12b (nose-side guide surface 12c). This creates a feed path 35 between the door-side guide surface 15b formed on the inside of the door member 15 and the nose-side guide surface 12c. In other words, at least a portion of the feed path 35 is formed by the nose-side guide surface 12c of the nose portion 12 and the door-side guide surface 15b of the door member 15.

[0033] In this embodiment, the front part of the feed path 35, which is continuous with the injection path 12a, is formed by the nose-side guide surface 12c of the nose portion 12 and the door-side guide surface 15b of the door member 15. The rear part of the feed path 35, which is continuous with the rear of this front feed path 35, is formed by the nose-side guide surface 12c of the nose portion 12 and the magazine cap-side guide surface 26c (described later) of the magazine cap portion 22.

[0034] A feeding mechanism 30 for feeding the connected nails forward is provided on the side (right side) of the feeding path 35. The feeding mechanism 30 automatically feeds the nails 50 forward one by one in conjunction with the nail driving operation. As the feeding mechanism 30 feeds the nails 50 set in the feeding path 35 forward, the leading nail 50 of the connected nails is sent to the ejection path 12a. The feeding mechanism 30 according to this embodiment includes a piston-cylinder mechanism 31, a feed claw 32, and a check claw 33.

[0035] The piston-cylinder mechanism 31 is driven by compressed air or the like and operates in conjunction with the nail-driving operation of the nail 50. The piston-cylinder mechanism 31 is configured such that the piston rod 31a reciprocates once each time the nail-driving operation of the nail 50 is performed. The nail feeding operation is performed by the reciprocating motion of the piston rod 31a.

[0036] The feed claw 32 is a component for feeding the connected nails, arranged in the feed path 35, forward one by one. The feed claw 32 is capable of reciprocating back and forth along the feed path 35. As shown in Figure 7, the feed claw 32 is fixed to the piston rod 31a via a pivot shaft 32a and reciprocates back and forth in conjunction with the piston rod 31a. The tip of the feed claw 32 is forked into a front claw portion 32b and a rear claw portion 32c. The distance between the front claw portion 32b and the rear claw portion 32c is wide enough for the shank portion 50b of the nail 50 to fit inside.

[0037] The feed claw 32 is configured to engage with one of the connected nails 50 in the feed path 35 when retracted, and to advance the nail 50 by one nail length when advancing. Specifically, when the nail 50 is driven out from the state shown in Figure 7(b), the piston-cylinder mechanism 31 is activated and the feed claw 32 retracts. At this time, since the feed claw 32 is rotatably attached to the tip of the piston rod 31a, it rotates in a direction that is pushed out by the nail 50 and moves away from the feed path 35. That is, it swings so as to disengage from the nail 50. Then, as shown in Figure 7(a), when it has retracted to the position of the nail 50 one nail behind, the front claw portion 32b and the rear claw portion 32c protrude into the feed path 35 again due to the force of the spring. As a result, the feed claw 32 engages with the nail 50 one nail behind. Then, as shown in Figure 7(b), the feed claw 32 moves forward, and the nail 50 moves forward by one nail length. This reversal and forward cycle is performed each time a nail-driving operation of 50 nails is carried out.

[0038] The check claw 33 is a component that prevents the connecting nail from moving backward. As shown in Figure 6(a), the check claw 33 is rotatably mounted on the nose portion 12 via a pivot shaft 33a. The locking portion 33b at the tip of the check claw 33 is capable of protruding into the feed path 35. The check claw 33 is biased by a biasing means such as a spring in the direction that the locking portion 33b protrudes into the feed path 35. Therefore, even if the nail 50 tries to move backward, the front surface of the locking portion 33b catches, and its movement is suppressed. On the other hand, when the nail 50 moves forward, the rear inclined surface of the locking portion 33b is pushed out by the nail 50 and rotates in a direction that retracts from the feed path 35, so the forward movement of the nail 50 is not hindered.

[0039] Next, we will describe the guide forming portion 22c of the magazine cap portion 22.

[0040] As shown in Figure 4, the guide forming portion 22c is a plate-shaped portion that protrudes forward from the semi-cylindrical portion 22a of the magazine cap portion 22. When the magazine cap portion 22 is closed, the guide forming portion 22c is positioned opposite the guide plate portion 12b (nose-side guide surface 12c). As a result, a feed path 35 is formed between the magazine cap-side guide surface 26c formed on the inside of the guide forming portion 22c and the nose-side guide surface 12c. In other words, at least a portion of the feed path 35 is formed by the nose-side guide surface 12c of the nose portion 12 and the magazine cap-side guide surface 26c of the magazine cap portion 22.

[0041] Inside the guide forming portion 22c, a head support portion 22d and a body support portion 22i are formed. The head support portion 22d and the body support portion 22i are protrusions projecting from the inner surface of the guide forming portion 22c and extending in the front-rear direction. The head support portion 22d and the body support portion 22i are the parts that hold the nail 50. These parts suppress the tilting of the nail 50 to the left. The head support portion 22d mainly supports the head 50a of the nail 50. The body support portion 22i mainly supports the body 50b of the nail 50. Note that the head support portion 22d and the body support portion 22i do not need to be clearly distinguishable, and the head support portion 22d and the body support portion 22i may be formed integrally. For example, the functions of the head support portion 22d and the body support portion 22i may be realized simultaneously by protrusions formed vertically with a certain width.

[0042] The head support portion 22d supports the head 50a of the nail 50 from below. The head 50a of the nail 50 can move along the upper surface of the head support portion 22d. In this embodiment, a metal member 25 is attached to the portion of the head support portion 22d that contacts the nail 50.

[0043] The metal member 25 is a small component as shown in Figure 5. The metal member 25 is formed by bending a metal plate. The metal member 25 integrally includes a guide portion 26, a first holding portion 27, and a second holding portion 28.

[0044] The guide portion 26 is the part that covers the upper surface of the head support portion 22d. This guide portion 26 is formed in almost the same shape as the head support portion 22d. The left and right width of the guide portion 26 that covers the upper surface of the head support portion 22d (the width of the part that is exposed on the inside of the magazine cap portion 22 when the metal member 25 is assembled to the magazine cap portion 22 as shown in Figure 4) is set to be almost the same as the left and right width of the head support portion 22d. Preferably, the left and right width of the guide portion 26 is formed to be the same as the left and right width of the head support portion 22d, or slightly larger than the left and right width of the head support portion 22d. By forming it in this way, the side surface of the tip of the guide portion 26 can support the position of the nail 50, that is, the side surface of the tip of the guide portion 26 constitutes the magazine cap side guide surface 26c, which will be described later.

[0045] The guide section 26 is equipped with an inclined section 26a and a straight section 26b, matching the shape of the head support section 22d. The inclined section 26a is formed to slope upward from the rear end towards the front. The straight section 26b is continuous with the front end of the inclined section 26a and is formed substantially parallel to the front-rear direction. Connecting nails passing through the feed path 35 are guided upward along the inclined section 26a and then guided straight forward along the straight section 26b. The guidance path of this guide section 26 corresponds to the guide groove 12d formed in the nose section 12.

[0046] Furthermore, the protruding surfaces of the inclined portion 26a and the straight portion 26b (the surfaces facing the nose-side guide surface 12c when the magazine cap portion 22 is closed) form the magazine cap-side guide surface 26c that creates the feeding path 35. That is, as shown in Figure 6(a), the nail 50 is configured to pass between the nose-side guide surface 12c and the magazine cap-side guide surface 26c. At this time, the minimum width between the nose-side guide surface 12c and the magazine cap-side guide surface 26c is set to be greater than or equal to the diameter of the body portion 50b of the guided nail 50, and less than the diameter of the head portion 50a of the nail 50. In other words, the maximum width of the feeding path 35 formed by the nose-side guide surface 12c and the magazine cap-side guide surface 26c is such that the body portion 50b of the nail 50 can pass through, but the head portion 50a of the nail 50 cannot. Therefore, the head portion 50a of the nail 50 resting on the upper surface of the guide portion 26 will not fall off downwards.

[0047] Furthermore, the first retaining portion 27 and the second retaining portion 28 of the metal member 25 are parts used to attach the metal member 25 to the magazine cap portion 22. The first retaining portion 27 and the second retaining portion 28 fix the metal member 25 to the magazine cap portion 22 in a way that prevents it from moving.

[0048] The first retaining portion 27 is formed to protrude laterally in a roughly U-shape from near the front end of the guide portion 26. The first retaining portion 27 extends from the inside to the outside of the guide forming portion 22c, passing through the first slit 22g (see Figure 4) formed in the guide forming portion 22c of the magazine cap portion 22. This first retaining portion 27 engages with the outer rib 22f formed on the surface of the guide forming portion 22c so as to embrace it (see Figure 3). The first retaining portion 27 is also fixed to the magazine cap portion 22 by a mounting pin 29 attached from the outside of the magazine cap portion 22. The first retaining portion 27 has a mounting hole 27a through which the mounting pin 29 passes.

[0049] The second retaining portion 28 is formed to protrude laterally in a roughly L-shape from near the rear end of the guide portion 26. The second retaining portion 28 extends from the inside to the outside of the guide forming portion 22c, passing through the second slit 22h (see Figure 4) formed in the guide forming portion 22c of the magazine cap portion 22. The tip of this second retaining portion 28 is inserted into and fixed in a retaining hole 22k (see Figure 1) provided on the outside of the magazine cap portion 22.

[0050] As described above, in this embodiment, at least a portion of the feed path 35, which was conventionally formed by the nose portion 12 and the door member 15, can be formed by the nose portion 12 and the magazine cap portion 22. Therefore, even when a metal door member 15 is used, the door member 15 can be made smaller, and weight reduction can be achieved.

[0051] Furthermore, the "feed path 35" in this invention substantially supports the orientation of the nail 50. In other words, the "nose-side guide surface 12c" and the "magazine cap-side guide surface 26c" in this invention exert the effect of suppressing the tilting of the nail 50 by contacting the body portion 50b of the nail 50. That is, parts that simply cover the nail 50 (for example, the tapered portion 22l provided to connect the semi-cylindrical portion 22a and the guide forming portion 22c, as shown in Figures 4 and 6(a)) do not constitute the "nose-side guide surface 12c" and the "magazine cap-side guide surface 26c".

[0052] In this embodiment, the nose portion 12 and the door member 15 or magazine cap portion 22 form a feed path 35. The door member 15 and the magazine cap portion 22 are arranged side by side in the front-to-back direction and constitute a guide surface that guides the left side of the nails 50. Here, there is a gap between the door member 15 and the magazine cap portion 22 (metal member 25), as shown in Figure 6(a), etc. Therefore, the guide surface is not completely continuous. For example, in the state shown in Figure 6(a), etc., there is a gap to the left of the fourth nail 50 from the front, and the left side of this fourth nail 50 is not supported. However, since each nail 50 is connected to the nails 50 in front of and behind it, it will not fall out of the feed path 35.

[0053] Furthermore, in order to effectively support the position of the nail 50, it is desirable that the minimum width between the nose-side guide surface 12c and the magazine cap-side guide surface 26c be set to be less than or equal to the diameter of the head 50a of the guided nail 50. By setting it in this way, resistance is suppressed when feeding the nail 50 into the injection path 12a, which is configured to have an inner diameter into which the head 50a of the nail 50 can enter, and the feeding operation becomes stable.

[0054] Furthermore, it is desirable that the magazine cap-side guide surface 26c extends forward in the nail feeding direction beyond the pivot axis 33a of the check claw 33. Specifically, as shown in Figure 6, it is desirable that the front end 26d of the magazine cap-side guide surface 26c is forward of the pivot axis 33a of the check claw 33. By extending the magazine cap-side guide surface 26c in this way, the check claw 33 can be operated while being guided by the lightweight magazine cap-side guide surface 26c. In addition, the area of ​​the door member 15 can be reduced, resulting in weight reduction.

[0055] Furthermore, as shown in Figure 6, it is desirable that the front end 26d of the magazine cap-side guide surface 26c, viewed in the nail feeding direction, be located behind the position where the check claw 33 protrudes into the feeding path 35. In other words, it is desirable to provide the magazine cap-side guide surface 26c within a range that does not exceed the rearmost position P1 where the check claw 33 protrudes into the feeding path 35. With this configuration, the load when the check claw 33 protrudes into the feeding path 35 is less likely to be received by the magazine cap-side guide surface 26c (in other words, the load can be received by the door member 15, etc.), thus preventing wear and damage to the magazine cap portion 22.

[0056] Furthermore, as shown in Figure 7(a), it is desirable that the front end 26d of the magazine cap-side guide surface 26c, viewed in the nail feeding direction, be located behind the position where the feed claw 32 protrudes into the feed path 35. In other words, it is desirable to provide the magazine cap-side guide surface 26c within a range that does not exceed the rearmost position P2 where the retracted feed claw 32 protrudes into the feed path 35. With this configuration, the load when the feed claw 32 protrudes into the feed path 35 is less likely to be received by the magazine cap-side guide surface 26c (in other words, the load can be received by the door member 15, etc.), thus preventing wear and damage to the magazine cap portion 22.

[0057] Furthermore, it is desirable that the magazine cap side guide surface 26c be made of a metal member 25 attached to the magazine cap portion 22, as in this embodiment. This allows the portion that contacts the nail 50 to be made of metal, thereby improving wear resistance. Also, by making only the portion necessary for guiding the nail 50 out of metal, the main body of the magazine cap portion 22 can be formed from a lightweight material, thus minimizing the increase in weight.

[0058] Furthermore, as shown in Figure 4, an engaging portion 22j is formed at the front end of the magazine cap portion 22 (the front end of the guide forming portion 22c). In this embodiment, the engaging portion 22j is a projection that protrudes forward. As shown in Figure 6(b), this engaging portion 22j is formed in a position that overlaps with the engaging portion 15c of the door member 15 when the magazine cap portion 22 and the door member 15 are closed.

[0059] When the door member 15 is closed after the magazine cap portion 22 is closed, the engaged portion 22j is pressed down by the engaging portion 15c. When the door member 15 is locked in this state, the magazine cap portion 22 is also locked. On the other hand, when the lock on the door member 15 is released and the door member 15 is opened, the magazine cap portion 22 can also be opened. The magazine cap portion 22 may be biased in the opening direction by a biasing means such as a spring so that it opens automatically when the door member 15 is opened.

[0060] As shown in Figure 1, the engaging portion 15c of the door member 15 engages with the magazine cap portion 22 above the head 50a of the nail 50 arranged in the feed path 35. With this arrangement, when the magazine cap portion 22 is viewed in the vertical direction, the feed path 35 for the nail 50 is formed between the magazine pivot shaft 22b and the engaging portion 15c. Therefore, the magazine cap portion 22 is fixed above and below the nail 50 as it passes through the feed path 35, and the magazine cap portion 22 can stably support the nail 50.

[0061] In the embodiments described above, an example was described in which the metal member 25 constituting the magazine cap side guide surface 26c is fixed to the magazine cap portion 22 in a way that prevents it from moving. However, the embodiments of the present invention are not limited to this, and the members constituting the magazine cap side guide surface 26c may be movable.

[0062] For example, as shown in Figure 8, the magazine cap portion 22 may include a movable member 40 that can move to change the width of the feed path 35. In this modified example, the movable member 40 is pivotable around a pivot axis 40a provided on the magazine cap portion 22. The magazine cap portion 22 has a biasing member 41 that biases the movable member 40 in a direction that narrows the width of the feed path 35. The movable member 40 is biased by this biasing member 41 in a direction that protrudes into the feed path 35, and the surface of the movable member 40 is able to move back and forth within the feed path 35. The surface of this movable member 40 forms a guide portion (magazine cap side guide surface 40b) that can move back and forth in the width direction of the feed path 35, so that the minimum width of the feed path 35 changes as the movable member 40 swings. With this modified example, the swinging of the movable member 40 dissipates impact and suppresses wear and damage to parts. Furthermore, even when guiding a nail with a small diameter 50, the biasing member 41 biases it, narrowing the guide width, thus improving the guiding effect (suppression of tilt). [Explanation of Symbols]

[0063] 10 Nail guns 11 Home Housing 12 Nose section 12a Injection path 12b Guide plate section 12c Nose side guide surface 12d Guide groove 12e hole 14 Contact components 14a Injection port 15 Door components 15a axis 15b Door-side guide surface 15c Engagement part 16 Control section 17 pins 20 Magazines 21 Magazine body 22 Magazine cap section 22a Half cylinder part 22b Magazine pivot axis 22c Guide forming section 22d Head support 22f Outer Rib 22g, 1st slit 22h Second Slit 22i Body support section 22j Engaged part 22k retaining hole 22L tapered section 23 Support Members 23a Post section 23b Bottom plate part 25 Metal components 26 Guide section 26a Slope 26b Straight section 26c Magazine cap side guide surface 26d front end 27 1st holding part 27a Mounting hole 28 Second holding part 29 Mounting pins 30 Feed mechanism 31 Piston-Cylinder Mechanism 31a Piston rod 32 Feed Claws 32a Rotary shaft 32b Front claw part 32c Rear claw part 33 Non-return claw 33a Rotary shaft 33b Locking part 35. Delivery Route 40 Moving member 40a Oscillating axis 40b Magazine cap side guide surface 41. Biasing member 50 nails 50a head 50b Torso P1 The position where the check claw protrudes into the feed path (the furthest rear position) P2 The position where the feed claw protrudes into the feed path (the furthest rear position)

Claims

1. A magazine for storing linked nails, A nose section having a nail ejection path, A nail gun equipped with, The magazine is provided with a feed path that guides the connecting nails to the injection path, The magazine comprises a magazine body capable of accommodating connecting nails, and a magazine cap portion attached to the magazine body so as to be openable and closable. At least a portion of the feed path is formed by the nose-side guide surface of the nose portion and the magazine cap-side guide surface of the magazine cap portion. Nail gun.

2. The maximum width of the feed path formed by the nose-side guide surface and the magazine cap-side guide surface is set to be less than the diameter of the head of the guided nail. The nail gun according to claim 1.

3. The system further includes a feeding mechanism for feeding the connected nails from the feeding path to the injection path, The feeding mechanism comprises a feed claw for feeding the connecting nails to the injection path, and a check claw rotatably provided to prevent the connecting nails from moving in the opposite direction to the feeding direction to the injection path. The magazine cap-side guide surface extends forward from the pivot axis of the check claw when viewed in the nail feeding direction. The nail gun according to claim 1.

4. The aforementioned feed path is provided with a rotatable check claw to prevent the connecting nail from moving backward. The front end of the magazine cap-side guide surface, as viewed in the nail feeding direction, is configured to be located behind the position where the check claw protrudes into the feeding path. The nail gun according to claim 2 or 3.

5. The system is equipped with feed claws for feeding the connecting nails arranged along the aforementioned feed path forward one by one. The front end of the magazine cap-side guide surface, viewed in the nail feeding direction, is located behind the position where the feed claw protrudes into the feeding path. The nail gun according to claim 2 or 3.

6. The magazine cap side guide surface is made of a metal member attached to the magazine cap portion. The nail gun according to claim 1.

7. To open the aforementioned feed path, a door member is provided that is movably attached to the nose portion, At least a portion of the feed path is formed by the nose-side guide surface of the nose portion and the door-side guide surface of the door member. The nail gun according to claim 2 or 3.

8. The aforementioned door member is made of metal. The nail gun according to claim 7.

9. The door member has an engaging portion that engages with the magazine cap portion in order to close the magazine cap portion. The engaging portion engages with the magazine cap portion above the head of the nail arranged in the feed path. The nail gun according to claim 7.

10. The magazine cap portion includes a movable member that can move to change the width of the feed path. The nail gun according to claim 1.

11. The moving member has a guide portion that can move back and forth in the width direction of the feed path. The nail gun according to claim 10.

12. The guide portion forms the guide surface on the magazine cap side. The nail gun according to claim 11.

13. The magazine cap portion has a biasing member that biases the moving member in a direction that narrows the width of the feed path. The nail gun according to claim 10.

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