JP2008168361A - Driving machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving machine which sufficiently maintains the area of a second guide surface and has an excellent visibility of remaining amount of nails or screws. <P>SOLUTION: A door member 62 is composed of transparent resin. The door member 62 has the second guide surface 62C opposed to a first guide surface 61A, the second guide surface 62C is approximately parallel to the first guide surface 61A, and a feed passage 61a is defined by the first guide surface 61A and the second guide surface 62C. A seat connection screw 2 is fed in the feed passage 61a. A part in the vicinity of one end part 62A of the door member 62 defines a part of a nose part 61 opposed to the part in the vicinity of one end part 62A and an injection port 61b for injecting the screw 2A. Since the door member 62 is composed of transparent resin, the part defining the injection port 61b is also transparent, and existence or nonexistence of the screw 2A-1 which is going to be injected from now is visible from the outside of the door member 62 through the door member 62. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a driving machine for driving a stopper such as a screw or a nail into a workpiece.

  Conventionally, so-called driving machines such as nailing machines and screwing machines are known. The driving machine has a magazine portion that can accommodate a connecting stopper in which a plurality of stoppers such as screws and nails are connected by a resin sheet or the like. Moreover, it has the nose part which has a 1st guide surface, and the door member which has a 2nd guide surface. The second guide surface is opposed to the first guide surface and defines a feed passage communicating with the magazine portion together with the first guide surface. A part of the door member defines the injection port of the stopper together with the nose portion at the end of the feed passage on the side opposite to the magazine portion.

  In the screwing machine among the driving machines, as shown in FIG. 6, the door member 162 is made of an opaque plastic provided with a plurality of ribs 162D in order to reduce the weight of the driving machine. It has been known. On the other hand, in the nailing machine among nailing machines, since the nail is ejected at a higher speed than the ejection port, the door member having the ejection port and the second guide surface constituting the feed passage communicating with the ejection port is Generally, it is made of metal that is resistant to friction. In FIG. 6, the same members as those in the present embodiment to be described later are denoted by the same reference numerals.

  In the nailing machine such as the nailing machine or the screwing machine described above, the nailing machine or the screwing machine is started without noticing the state where the remaining amount of the loaded nail or screw becomes zero. When a bit provided in a driving machine for injecting a screw is protruded from an injection port without injecting a nail or a screw, it is called idle driving.

When the blanking occurs, the tip of the bit may jump out of the injection port and damage wood or gypsum board. Therefore, in order to check the remaining amount of nail or screw, the magazine part that stores the nail or screw is molded with transparent plastic, or a small window for checking the remaining amount of nail or screw is formed on the door member and sent. Generally, a structure in which a nail or a screw in a passage is visible is known.
JP 2003-236766 A JP 2006-986 A

  As described above, in the case where the magazine part is formed of transparent plastic, it can be confirmed that the nail or screw remains when the nail or screw remains in the magazine part, but the inside of the magazine part becomes empty, When the nail or screw remaining amount exists only in the feed passage, there arises a problem that the nail or screw remaining amount cannot be visually recognized.

  In particular, as shown in FIG. 6, when the screw 2A is long and the lower end portion can be directly visually recognized, it is easy to understand that the screw exists in the feed passage, but as shown in FIG. When the screw 2A 'is short and cannot be visually recognized from the outside of the driving machine, it is difficult to grasp the remaining screw amount in the feed passage.

  In addition, in the case of the configuration in which the small window is formed on the door member as described above, if the small window is enlarged in order to improve the visibility of the remaining amount of the nail or screw and facilitate the confirmation of the remaining amount of the nail or screw. As a result, the area of the second guide surface of the door member forming the feed passage is reduced, which causes a problem that the nail or the screw cannot be correctly guided. In addition, when the small window is enlarged, there arises a problem that the strength of the door member itself is lowered.

  Accordingly, an object of the present invention is to provide a driving machine that maintains a sufficient area of the second guide surface and has good visibility of the remaining amount of nails or screws.

  In order to solve the above-mentioned problems, the present invention provides a magazine part for storing a connection stopper formed by connecting a plurality of stoppers, a nose part having a first guide surface, and a feed passage communicating with the magazine part. A door member having a second guide surface defined with the first guide surface and facing the first guide surface, and defining an injection port together with the nose portion at an end of the feed passage opposite to the magazine portion; A feeder for feeding the connecting stopper to the injection port from the magazine through the feed passage in order to supply the stopper to the injection port, and the door member is made of a transparent resin. Is provided.

  Since the door member is made of a transparent resin, it can be easily recognized whether or not a stopper exists at the injection port. Moreover, it is not necessary to form a window or the like for visually recognizing the stopper, and the area of the second guide surface can be sufficiently maintained. Moreover, the weight of the driving machine can be reduced.

  Here, it is preferable that a plurality of first ribs directed in one direction are provided on a part of the outer surface of the door member and at least the portion corresponding to the injection port.

  Since a plurality of first ribs directed in one direction are provided on at least a portion corresponding to the injection port on a part of the outer surface of the door member, the strength of the resin door member can be increased.

  Further, when the door member is made of resin, if a reinforcing rib or the like is provided, the light is refracted at the uneven portion of the rib, and there is a risk of hindering the visual recognition of the remaining amount of fasteners such as nails and screws. Since the rib is composed of a plurality of ribs oriented in one direction, there are a portion where the visibility of the stopper such as a nail or a screw is deteriorated due to refraction due to the unevenness of the first rib, and a portion where the thickness of the transparent resin material is thin and good Appear alternately. For this reason, the visibility of fasteners such as nails and screws is improved compared to a state where the whole is uniformly thick and low in transparency, or a state where irregularities such as ribs are installed in multiple directions and light is refracted in multiple directions. It is possible.

  Moreover, it is preferable that this 1st rib extends in the feed direction of this stopper, and is oriented. Since the first rib extends and is oriented in the feeding direction of the stopper, the first rib can more reliably prevent the visual recognition of the presence or absence of the stopper at the injection port.

  In addition, a second rib extending in a direction perpendicular to the feeding direction of the stopper is provided on a part of the outer surface of the door member that is away from the injection port equivalent part. It is preferable.

  A portion of the outer surface of the door member that is out of the portion corresponding to the injection port is provided with a second rib that extends in the direction perpendicular to the feed direction of the stopper and is directed to the door member. The strength can be further increased. Further, when both the first rib and the second rib are provided, a portion in which the visibility of the fastener such as a nail or a screw is deteriorated due to refraction due to the unevenness of the first rib and the second rib, and a transparent resin material The portions having a small thickness and good visibility appear alternately in a lattice pattern. For this reason, it can prevent as much as possible that the 1st rib and the 2nd rib obstruct the visual recognition of the presence or absence of the stopper in an injection port.

  Further, when the feeder is moved away from the injection port, a metal protective member that comes into contact with the stopper is provided to temporarily press the stopper against the second guide surface in the feed passage. Preferably it is.

  The feeder is provided with a metal protection member that comes into contact with the stopper in order to temporarily press the stopper against the second guide surface in the feed passage when moving away from the injection port. The door member can have sufficient wear strength. In addition, since the part where the protection member is provided is only a part of the door member communicating with the injection port, it is possible to ensure the visibility of the remaining amount of the fastener through the door member made of transparent resin, The weight can be reduced as compared with the case where the entire door member is made of metal.

  According to the present invention, it is possible to provide a driving machine that maintains a sufficient area of the second guide surface and has good visibility of the remaining amount of nails or screws.

  A driving machine according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the driving machine is specifically a screwing machine 1, and the screwing machine 1 includes a driving device unit 10 and a magazine unit 50. The driving device section 10 has a body 11 that forms an outer frame of the main body. In the body 11, a pressure accumulating chamber 11a communicating with a compressed air intake port 11b formed in a handle section 11A described later is formed. ing. For convenience of explanation here, the driving direction of the screw 2A, which will be described later in the following explanation, that is, the downward direction in FIG. 1 is the downward direction, and the opposite direction is the upward direction.

  In the middle of the body 11, a handle portion 11A extending in a direction substantially perpendicular to the vertical direction of the body 11, that is, in the right direction in FIG. A compressed air intake port 11b is formed at the extending end of the handle portion 11A. Here, for convenience of explanation, in the following explanation, the direction in which the handle portion 11A extends is the rear direction, and the opposite direction is the front direction. A trigger 11B and an operation valve 12 are provided at a position below the base of the handle portion 11A, and the trigger 11B and the operation valve 12 are configured to be interlocked. The magazine part 50 is provided in the vicinity of the extending end of the handle part 11A and connected to the lower part of the handle part 11A. The magazine portion 50 stores therein a sheet connecting screw 2 configured by connecting a plurality of screws 2A as shown in FIG. 2 with a resin sheet 2B. The sheet connecting screw 2 corresponds to a sheet connecting stopper, and the screw 2A corresponds to a stopper.

  An air motor 13 having a rotor 13A rotatably supported is provided above the body 11, and a bottomed cylindrical rotating body 15 that is rotated by the rotor 13A via a planetary gear unit 14 is not shown. It is rotatably supported by a bearing. The planetary gear device 14 has three planetary gear devices 14A, and the shafts 14B of the three planetary gear devices 14A are attached to the upper end surface of the rotating body 15 by means such as press fitting. The planetary gear device 14 decelerates the rotation of the air motor 13 and transmits it to the rotating body 15. In FIG. 1, only two planetary gears 14A appear.

  A vent hole 11c is formed in a substantially central side wall of the rotating body 15 in the axial direction, and a groove 11d is formed in a portion of the body 11 facing the vent hole 11c. A cylindrical main valve 16 that can move up and down is provided in the groove 11d by being urged upward by a spring 17. The upper and lower side surfaces of the main valve 16 are sealed, and the central portion is passed through. A pore 11e is formed. A vent hole 11f and a vent hole 11g communicating with the aforementioned operation valve 12 and the pressure accumulating chamber 11a are formed below and above the groove 11d, respectively.

  A pair of recesses 15 a extending in the axial direction is formed on the inner wall of the rotating body 15. A rotating slide member 18 having a substantially cylindrical shape is provided in the inner peripheral surface of the rotating body 15. The rotary slide member 18 has a pair of convex portions 18A that are fitted into the concave portions 15a on the upper outer side. In addition, a driver bit mounting portion 19 is provided inside the lower portion, and a piston portion 20 having a seal ring mounted is provided on the outer periphery of the lower end portion. The rotary slide member 18 is provided in the rotary body 15 so as to be movable in the axial direction.

  The rotary slide member 18 is fitted into the rotary body 15, and the rotary slide member 18 is provided with an air blocking surface 24. The rotary slide member 18 is formed with a vent hole 18a penetrating in the axial direction. An O-ring 21 is provided on the outer periphery of the piston portion 20, and the piston portion 20 can slide in the cylinder 22 via the O-ring 21. A driver bit 23 is mounted on the driver bit mounting portion 19 of the rotary slide member 18.

  A damper plate 25 is provided above the cylinder 22 so as to abut against the air blocking surface 24 when the rotary slide member 18 is lowered by a predetermined distance, and a vent hole 11h is formed below the damper plate 25. The vent hole 11h communicates with an inlet hole (not shown) of the air motor 13 through an air passage (not shown). A piston damper 26 is provided at the lower end of the cylinder 22, and a vent hole 15 b and a vent hole 15 c are formed below the cylinder 22. An O-ring 22A constituting a one-way valve (check valve) having a well-known configuration in the air nailer is provided on the outer periphery of the vent hole 15b. Between the lower side of the body 11 and the outer periphery of the cylinder 22, a return pressure accumulating chamber 11i having a well-known configuration is formed in the air nailer.

  As shown in FIG. 3, a nose portion 61 and a door member 62 are provided below the body 11. The nose portion 61 is fixed to the body 11. As shown in FIG. 3, the nose portion 61 has a first guide surface 61A. The first guide surface 61A is oriented substantially in the vertical direction and extends substantially in the front-rear direction of the screw tightener 1, and is provided from the magazine portion 50 to an injection port 61b described later.

  The nose portion 61 is provided with a feeder 63. As shown in FIG. 3, the feeder 63 has a piston 63A and a claw portion 63B. The piston 63A can reciprocate in the extending direction of a feed passage 61a described later, that is, the left-right direction in FIG. 3, and the base end portion of the claw portion 63B is provided on the piston 63A so as to be able to reciprocate integrally with the piston 63A. The piston 63A is rotatably connected to the tip portion of the rod portion 63C. The tip portion of the claw portion 63B passes through a through hole (not shown) formed in the nose portion 61 and protrudes from the first guide surface 61A toward the second guide surface 62C described later.

  A spring 63D is provided in the middle of the claw portion 63B. The spring 63D biases the claw portion 63B upward in FIG. 3, and is configured to protrude from the first guide surface by the biasing force of the spring 63D.

  Further, when compressed air flows into the upper part 63A-1 of the piston 63A, the piston 63A moves backward (moves to the right) against the urging force of the spring 63E. When the piston 63A moves backward, the claw portion 63B rotates around the pin 63F against the urging force of the spring 63D by the seat 2B and moves backward. When the compressed air is exhausted, the piston 63A moves forward (moves to the left) by the urging force of the spring 63E. At this time, the claw portion 63B protrudes from a through hole (not shown) by the urging force of the spring 63D, and the piston 63A is engaged with a recess (not shown) of the seat 2B constituting the sheet connecting screw 2 in the right side of FIG. By driving from the direction to the left direction, the sheet connecting screw 2 can be sent from the magazine portion 50 to the injection port 61b described later through a feed passage 61a described later. Further, after the sheet connecting screw 2 is fed, the claw portion 63B supports the screw 2A-1 to be ejected from the ejection port in a state where it is engaged with a not-shown concave portion of the sheet 2B.

  As shown in FIG. 3, the door member 62 is provided at a position facing the nose portion 61, and the whole is made of a transparent resin. One end portion 62 </ b> A of the door member 62 is supported on the end of the nose portion 61 fixed to the body 11 on the side opposite to the magazine portion 50 so as to be rotatable about the rotation shaft 62 </ b> B. As the door member 62 is rotated and opened, one end portion of the sheet connecting screw 2 housed in the magazine portion 50 can be introduced and set into an injection port 61b described later. When the screwing machine is in use, the door member 62 is closed as shown in FIG.

  The door member 62 has a second guide surface 62C facing the first guide surface 61A, and the second guide surface 62C is rotated as the door member 62 is rotated as shown in FIG. Is substantially parallel to the first guide surface 61A when it is closed, and is provided along the first guide surface 61A. The first guide surface 61A and the second guide surface 62C define a feed passage 61a when the door member 62 is closed, and the sheet connecting screw 2 can be fed in the feed passage 61a. Has been.

  A portion of the door member 62 in the vicinity of the one end portion 62A defines an injection port 61b for injecting the screw 2A together with a portion of the nose portion 61 facing the vicinity of the one end portion 62A. As shown in FIG. 3, the injection port 61 b is configured so as to be defined when the door member 62 is in a closed state, and the screw 2 </ b> A- 1 from which driving is performed is replaced by the seat coupling screw 2. Is sent by the feeder 63 and arranged except when the person sets the item. Since the door member 62 is made of a transparent resin, the portion defining the injection port 61b is also transparent, and the screw 2A-1 to be injected from the outside of the door member 62 is connected to the door member. Through 62, the presence or absence can be visually recognized.

  A metal protection member 64 is provided at a position that is a part of the second guide surface 62C and faces the screw 2A-2 closer to the magazine portion 50 than the screw 2A-1 to be injected. . A through-hole 64a is formed in the metal protection member 64, and the protection member 64 has a door through which a screw 65 passes through the through-hole 64a and the screw 65 is screwed into a second rib 62E described later. It is fixed to the member 62. When the screw 2A is sent to the protective member 64 and moves away from the injection port 61b, and when the feeder 63 moves backward (moves to the right side), the screw 2A is temporarily moved to the second guide surface 62C in the feed passage 61a. Therefore, the screw 2A-2 pressed by the claw portion 63B comes into contact. For this reason, it can prevent that the resin-made parts of the door member 62 contact | abut directly to the screw 2A-2 pressed by a nail | claw, and give the wear strength of the door member 62, and prevent it from wearing out. be able to.

  In addition, since the protective member 64 is provided only at a part of the door member 62 communicating with the injection port 61b and not at the position of the injection port 61b, the door member 62 made of a transparent resin is used. The visibility of the remaining amount of the screw 2A-1 can be ensured, and the weight can be reduced as compared with the case where the entire door member 62 is made of metal.

  A first rib 62D and a second rib 62E are provided on the outer surface of the door member 62 located on the opposite side of the door member 62 on which the second guide surface 62C is provided. The first ribs 62D are all oriented in one direction, and more specifically, as shown in FIGS. 2 and 3, on the outer surface of the door member 62 including the portion corresponding to the injection port 61b, the sheet connecting screw Two feed directions are provided parallel to the feed direction of 2, that is, the direction from right to left in FIG.

  The second rib 62E is provided at a substantially central position of the door member 62 in the sheet feeding direction, that is, at a portion that is a part of the outer surface of the door member 62 and that is out of the portion corresponding to the injection port 61b. Oriented in a direction perpendicular to A hole 62a in which a female screw is threaded is formed on the inner peripheral surface at the axial center position of the second rib 62E, and the screw 65 for fixing the metal protective member 64 is screwed.

  Since a plurality of first ribs 62D oriented in the feeding direction are provided on a part of the outer surface of the door member 62 and corresponding to the injection port 61b, the strength of the resin door member 62 can be increased. it can. When the door member is made of a transparent resin, if a reinforcing rib or the like is provided, light is refracted at the concave and convex portions of the rib, and there is a risk of hindering visual recognition of the remaining amount of a fastener such as a screw. For example, as in a conventional screw tightening machine as shown in FIG. 6, the left direction of FIG. 6 which is the feed direction of the sheet connecting screw 2, a direction perpendicular to the feed direction, and a predetermined direction with respect to the feed direction The rib 162D is provided in a diagonal direction that forms an acute angle, and the presence of the screw 2A in the feed passage 61a and the injection port 61b can be visually recognized through the transparent door member 62, but depending on the viewing angle. May interfere with visual recognition.

  However, since the first rib 62D provided in the portion corresponding to the injection port 61b is composed of a plurality of ribs oriented in one direction, a portion where the visibility of the screw 2A is deteriorated due to refraction due to the unevenness of the first rib 62D, and a transparent resin The parts where the thickness of the material is thin and the visibility is good appear alternately. For this reason, the screw 2A and the like are more in a state where the whole is uniformly thick and low in transparency, or in a state where the unevenness of the ribs 162D is installed in multiple directions and the light is refracted in multiple directions as shown in FIG. It is possible to improve the visibility of the fastener. Furthermore, since the first rib 62D extends in the feed direction of the sheet connecting screw 2 and is directed, the first rib 62D can be more reliably prevented from obstructing the visual recognition of the presence or absence of the screw 2A at the injection port 61b. Can do.

  In addition, a second rib 62E extending in a direction perpendicular to the feeding direction of the sheet connecting screw 2 is provided on a part of the outer surface of the member that is away from the portion corresponding to the injection port 61b. Therefore, the strength of the door member 62 can be further increased. In addition to this, in the present embodiment, both the first rib 62D and the second rib 62E are provided, and refraction due to the unevenness of the first rib 62D and the second rib 62E causes the fasteners such as the screws 2A to be refracted. The portions where the visibility is poor and the portions where the transparent resin material is thin and the visibility is good appear alternately in a lattice shape. For this reason, it can prevent as much as possible that the 1st rib 62D and the 2nd rib 62E obstruct the visual recognition of the presence or absence of the stopper in the injection port 61b.

  Further, a push lever 27 articulated with the operation valve 12 is provided below the injection port 61b. The push lever 27 is brought into contact with a not-shown material to be screwed in, and the push lever 27 is further pushed upward, and then the trigger 11B is pulled, whereby the operation valve 12 is opened and the screw 2A is moved. It is comprised so that it can be driven in.

  Next, the operation of the screw tightener 1 will be described below. When the compressed air intake port 11b is connected to a compressor (not shown), compressed air flows into the groove 11d below the main valve 16 via the pressure accumulating chamber 11a, the operation valve 12, and the vent hole 11f. The valve 16 is pushed upward to seal the upper end surface of the main valve 16. As a result, the pressure accumulating chamber 11a and the air hole 11c of the rotating body 15 are blocked, and the compressed air is not supplied to the piston portion 20, the air motor 13, and the like.

  When the operation valve 12 is operated by operating the push lever 27 and the trigger (D), the compressed air below the main valve 16 is discharged through the vent hole 11f and the operation valve 12. Since compressed air pressure is applied to the outer periphery of the upper surface of the main valve 16, the main valve 16 is pushed down against the spring 17. As a result, compressed air flows into the rotator 15 through the vent hole 11g, the vent hole 11c of the rotator 15, etc., and air pressure is applied to the upper surface of the piston part 20 to push the piston part 20 downward. At the same time, compressed air is also supplied to the air motor 13 communicated from the vent hole 11h, and the rotor 13A of the air motor 13 is rotated. The rotation of the rotor 13 </ b> A is transmitted to the rotating body 15 and the rotating slide member 18 fitted into the rotating body 15 via the planetary gear 14 </ b> A and the planetary gear shaft 61 of the planetary gear device 14. As a result, the rotary slide member 18, the piston portion 20, and the driver bit 23 rotate simultaneously while descending. When the driver bit 23 is lowered and rotated, the sheet connecting screw 2 located below the driver bit 23 is detached from the sheet 2B, and is screwed after the tip of the screw 2A is driven into a not-shown workpiece.

  When the driver bit 23 is lowered to the screwing completion position, the piston portion 20 comes into contact with the piston damper 26 and the air blocking surface 24 of the rotary slide member 18 comes into contact with the damper plate 25 to stop the lowering. At this time, the vent 11h is closed by the abutment of the air blocking surface 24, and the supply of compressed air to the air motor 13 is stopped. For this reason, the rotor 13A of the air motor 13 stops rotating, and the planetary gear unit 14, the rotating body 15, the rotating slide member 18, the piston portion 20, and the driver bit 23 stop rotating. In this state, compressed air flows into the return pressure accumulating chamber 11i from the pressure accumulating chamber 11a through the vent hole 11g, the vent hole 11c, the upper chamber of the rotary slide member 18 and the vent hole 15b, and also through the vent hole 15c. Compressed air also flows into the lower surface side of 20. Since the pressure receiving area of the piston portion 20 is increased on the upper surface side, the piston portion 20 is pressed against the piston damper 26 and stopped.

  When the operation valve 12 is returned, compressed air flows from the pressure accumulating chamber 11a into the groove 11d below the main valve 16 through the operation valve 12 and the vent hole 11f, and pushes the main valve 16 upward. For this reason, between the pressure accumulation chamber 11a and the vent hole 11c of the rotating body 15 is blocked as described above. At the same time, the vent hole 11e at the center of the main valve 16 communicates with the exhaust hole 11j through an air passage (not shown), so that the compressed air on the upper surface of the piston part 20 is discharged to the outside of the body 11. The compressed air in the return pressure accumulating chamber 11i is prevented from being discharged through the vent hole 15b by an O-ring 22A provided on the outer periphery of the vent hole 15b. As a result, the piston portion 20 and the driver bit 23 are returned to the upper initial position by the air pressure acting on the lower surface of the piston portion 20. At the same time, the sheet connecting screw 2 is fed by the feeder 63 through the feed passage 61a in the direction of the injection port 61b, and the screw 2A to be driven next is sent to the injection port 61b, that is, on the driver bit 23 axis to be in the initial state. Return.

  At this time, since the door member 62 that defines the portion of the injection port 61b is transparent, it can be easily recognized whether or not the screw 2A-1 is present in the injection port 61b. In addition, it is not necessary to form a window or the like for confirming whether or not the screw 2A-1 is present at the injection port 61b. Therefore, the area of the second guide surface 62C can be sufficiently maintained. Moreover, since the door member 62 consists of resin, the weight reduction of the screwing machine 1 which is a driving machine can be achieved.

  The driving machine of the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made within the scope described in the claims. For example, in the present embodiment, both the first rib 62D and the second rib 62E are provided, but only one of them may be provided.

  Moreover, although the driving machine by this Embodiment was the screwing machine 1, it is not limited to a screwing machine, For example, it is good also as a nailing machine, and it is good also considering a door member as a product made from transparent resin. In this case, instead of the sheet connecting screw 2, a sheet connecting nail, a wire connecting nail or the like is used.

  Further, although the metal protection member 64 is fixed to the door member 62 by the screw 65, it may be fixed to the door member 62 by press fitting or adhesion.

  Further, in the present embodiment, the screw 2A is relatively long and is visible from the lower side of the door member 62 as shown in FIG. 2, but as shown in FIG. A short screw 2A ′ that does not protrude from the end may be used. Even in such a case, since the door member 62 is made of a transparent resin, the presence of a screw can be visually recognized through the door member 62.

The partial cross section side view which shows the screwing machine which is a driving machine by embodiment of this invention. The principal part side view which shows the screwing machine which is a driving machine by embodiment of this invention. Sectional drawing along III-III of FIG. Sectional drawing of the door member 62 along IV-IV of FIG. The principal part side view which shows the state which used the short screw in the screwing machine which is a driving machine by embodiment of this invention. The principal part side view which shows the conventional screwing machine which is a screwing machine. The principal part side view which shows the conventional screwing machine which is a screwing machine. Sectional drawing which shows the main part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Screwing machine 2 ... Sheet connection screw 2A ... Screw 2B ... Sheet 50 ... Magazine part 61 ... Nose part 61A ... 1st guide surface 61a ... Feed passage 61b ... Injection port 62 ... Door member 62C ... 2nd guide surface 62D ... 1st rib 62E ... 2nd rib 63 ... Feeder 64 ... Protection member

Claims (5)

A magazine portion for storing a connecting stopper formed by connecting a plurality of stoppers;
A nose portion having a first guide surface;
A feed passage communicating with the magazine portion is defined together with the first guide surface, and has a second guide surface facing the first guide surface, and the nose portion at an end of the feed passage opposite to the magazine portion And a door member defining an injection port,
A feeder that feeds the connecting stopper through the feed passage from the magazine portion toward the outlet for supplying the stopper to the outlet;
The door member is made of a transparent resin.     2. The driving machine according to claim 1, wherein a plurality of first ribs oriented in one direction are provided on a part of the outer surface of the door member and at least the portion corresponding to the injection port.     3. The driving machine according to claim 2, wherein the first rib extends and is directed in a feeding direction of the stopper.     A portion of the outer surface of the door member that is out of the portion corresponding to the injection port is provided with a second rib extending in a direction perpendicular to the feed direction of the stopper. The driving machine according to any one of claims 1 to 3, characterized in that:     The feeder is provided with a metal protection member that comes into contact with the stopper in order to temporarily press the stopper against the second guide surface in the feed passage when moving away from the injection port. The driving machine according to any one of claims 1 to 4, wherein:

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