JP2023157401A - Work machine - Google Patents

Abstract

To improve reliability of a work machine.SOLUTION: A driving machine includes: an ejection part 8 having an ejection port 8c in which a nail 18 may be disposed; a striking part which strikes the nail 18 placed in a striking area of the ejection port 8c; a supply part which supplies the nail 18 to the striking area; and a guide part 28 which guides arrangement of the nail 18 when the nail 18 is supplied to the supply part. The supply part has: a magazine which houses the plurality of nails 18 connected in a line; and a supply passage 27a which supplies the nail 18 from the magazine to the ejection port 8c. The guide part 28 is a barrier part 28a which is located in the supply passage 27a and may contact the nail 18.SELECTED DRAWING: Figure 5

Description

The present invention relates to a working machine such as a driving machine.

As an example of a working machine, a driving machine is known that has a trigger section that is operated by a worker, a striking section that strikes a stopper, and an injection section that has an injection port that ejects the stopper. .

As an example of the above-mentioned driving machine, Patent Document 1 discloses, for example, a driving machine that includes a feeder section that feeds a fastener to an injection port of an injection section.

International Publication No. 2018/198672

In the driving machine described in Patent Document 1 mentioned above, the leading nail is placed in front of the injection port in the standby state, and after the trigger operation is performed, the feeder section is driven to load the leading nail into the injection port. do. In the case of this driving machine, when the worker replenishes the magazine with nails, it is necessary to place the first nail in front of the ejection port, but due to incorrect replenishment by the worker, the first nail is loaded into the ejection port. There was a possibility that it would happen. In the configuration of the driving machine described in Patent Document 1, if the first nail is loaded into the injection port, the feeder section is driven after the trigger operation is performed and the second nail is also loaded into the injection port. This can lead to overloading and cause malfunction. Furthermore, when nail jams occur, it becomes necessary to clear the nail jams, and workability may also deteriorate.

An object of the present invention is to provide a working machine with improved reliability.

The working machine of the present invention includes: an injection part having an injection port in which a stopper can be arranged; a striking part that strikes the stopper arranged in a striking area of the injection outlet; and a guide part that guides the arrangement of the fasteners when replenishing the fasteners to the supply part.

According to the present invention, the reliability of a working machine can be improved.

1 is a side cross-sectional view showing the internal structure of a working machine according to an embodiment of the present invention. FIG. 3 is a plan view showing the structure of a supply section in the working machine according to the embodiment of the present invention. FIG. 3 is a partial sectional view showing an opening/closing structure of a barrier section in conjunction with a nail guide of a working machine according to an embodiment of the present invention, in which (a) shows the barrier section in a closed state, and (b) shows the barrier section in an open state. FIG. 2 is a plan view showing a structure in which the feeder section of the work machine according to the embodiment of the present invention pushes the leading nail, in which (a) the feeder section is in a retreated position and (b) the feeder section is in a forward position. FIG. 2 is a plan view showing a nail guide in an open state in a structure in which a feeder section of a working machine pushes a leading nail according to an embodiment of the present invention. FIG. 6 is a schematic diagram showing a structure in which the feeder section presses the leading nail shown in FIG. 5, in which (a) the feeder section is in a retracted position and (b) the feeder section is in a forward position. FIG. 2 is a schematic diagram showing a case where an erroneous operation occurs in a structure in which the feeder part pushes the leading nail, in which (a) shows the feeder part in the retreated position, and (b) shows the feeder part in the forward position. FIG. 3 is a plan view showing a structure in which a feeder section of a working machine of a comparative example pushes a leading nail, in which (a) the feeder section is in a backward position, and (b) a state in which the feeder section is in a forward position. FIG. 3 is a plan view showing a structure in which the feeder section of the working machine according to the embodiment of the present invention pushes the second nail, in which (a) the feeder section is in the retreated position and (b) the feeder section is in the forward position; be. FIG. 6 is a plan view showing a nail guide in an open state in a structure in which the feeder section of the working machine pushes a second nail according to an embodiment of the present invention. FIG. 11 is a schematic diagram showing a structure in which the feeder section pushes the second nail shown in FIG. 10, in which (a) the feeder section is in the retreated position and (b) the feeder section is in the forward position. It is a schematic diagram which shows the case where an erroneous operation is made in the structure in which the feeder part pushes the second nail, in which (a) the feeder part is in the retreat position, and (b) the feeder part is in the forward position. It is a schematic diagram which shows the structure in which a feeder part pushes the third nail, (a) the feeder part is in a retreat position, (b) is a state in which the feeder part is in a forward position. It is a schematic diagram which shows the case where an erroneous operation is carried out in the structure in which the feeder part pushes the third nail, (a) the feeder part is in the retreated position, and (b) the feeder part is in the forward position. FIG. 7 is a plan view illustrating a structure in which the feeder section of the working machine according to the first modification of the present invention pushes the leading nail, in which (a) the feeder section is in the retreated position and (b) the feeder section is in the forward position; be. FIG. 7 is a partial cross-sectional view showing the opening/closing structure of the barrier section in conjunction with a trigger (push lever) of a working machine according to a second modification of the present invention, in which (a) the barrier section is in a closed state and (b) the barrier section is in an open state. It is. It is a partial sectional view showing the structure of the display part of the working machine of the third modification of the present invention.

Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.

In this embodiment, a driving machine will be described as an example of a working machine. As shown in FIG. 1, a driving tool 1 has a housing 2. As shown in FIG. The housing 2 includes a cylinder case 3, a motor case 4, and a handle 5. The cylinder case 3 houses a cylinder 10, and the motor case 4 houses an electric motor 20.

The motor case 4 and the handle 5 extend substantially parallel to each other from the cylinder case 3 , and the end of the motor case 4 and the end of the handle 5 are connected to each other by a connecting portion 7 . The housing 2 has two housing halves molded from synthetic resin such as nylon or polycarbonate, and is assembled by butting these two housing halves together.

A piston 11 is housed within the cylinder 10 so as to be able to reciprocate. Inside the cylinder 10, the piston 11 reciprocates between a top dead center and a bottom dead center along the axial direction of the cylinder 10. Inside the cylinder 10, a piston chamber 12 whose volume increases and decreases as the piston 11 reciprocates is defined by the inner peripheral surface of the cylinder 10 and the upper surface of the piston 11.

On the other hand, a driver blade 16 is connected to the lower surface of the piston 11. The driver blade 16 is integral with the piston 11 and reciprocates together with the piston 11. That is, the striking portion 6 composed of the piston 11 and the driver blade 16 reciprocates within the cylinder 10 . Specifically, an injection section 8 is provided at the tip of the cylinder case 3, and an injection passage 9 is provided inside the injection section 8. The driver blade 16 reciprocates in the injection passage 9 as the piston 11 reciprocates. In the following description, the reciprocating direction of the piston 11 and the driver blade 16 in FIG. 1 is defined as a vertical direction P. In addition, the direction perpendicular to the vertical direction P and in which the stopper is fed is defined as the front-back direction (first direction) Q, and the direction perpendicular to the vertical direction P and the front-back direction Q is defined as the left-right direction R (Fig. (see).

A magazine (accommodating portion) 19 that accommodates a large number of the fasteners is attached to the housing 2. In this embodiment, a case where the nail 18 is driven will be explained using the nail 18 as an example of the fastener. The nails 18 housed in the magazine 19 are supplied one by one to the injection passage 9 by a feeder section 26 of a supply section 27 shown in FIG. 2 that includes the magazine 19. The driver blade 16 then strikes the heads of the nails 18 that are sequentially supplied to the injection passage 9. The nail 18 whose head has been hit by the striking part 6 passes through the injection passage 9 of the injection part 8, is ejected from the injection port which is the exit of the injection passage 9, and is driven into a mating material 24 such as wood or gypsum board. It will be done.

An electric motor 20 is housed in the motor case 4, and an output shaft 21 of the electric motor 20 is connected to a wheel driven by the electric motor 20 via a planetary gear type reduction mechanism. The electric motor 20 is operated by electric power supplied from a battery 22 attached to the connecting portion 7 of the housing 2 . Further, a controller 23 as a control section is housed inside the connecting section 7. The controller 23 is a microcomputer configured with a CPU, ROM, RAM, etc., and controls the electric motor 20. Specifically, the electric motor 20 is a brushless motor, and the controller 23 changes the duty ratio of the motor current supplied to the electric motor 20 according to the control mode. That is, the controller 23 performs PWM (Pulse Width Modulation) control on the electric motor 20.

A damper 15 made of rubber or urethane is provided at the bottom of the cylinder 10. The damper 15 receives the piston 11 that has reached the bottom dead center and avoids a collision between the piston 11 and the cylinder 10. A driver blade 16 extending downward from the piston 11 passes through the damper 15 and projects from the cylinder 10 through a through hole provided at the bottom of the cylinder 10.

A pressure storage container 14 forming a pressure storage chamber 13 is provided above the cylinder 10 , and the pressure storage chamber 13 communicates with the piston chamber 12 . The piston chamber 12 and the pressure accumulation chamber 13 are filled with high pressure gas (compressed air in this embodiment) in advance. When moving the piston 11 from the bottom dead center to the top dead center, the electric motor 20 is operated under the control of the controller 23.

Further, the injection section 8 is provided with a push lever 25. The push lever 25 is held movably in the vertical direction P, and is always urged downward by a spring. When the push lever 25 is pressed against the mating member 24 and moves upward against the bias of the spring, a predetermined signal is output. Further, the handle 5 is provided with a trigger section 17 that is operated by the operator, and when the trigger section 17 is operated, a trigger switch 17a built in the handle 5 is activated, and a predetermined setting for the driving operation is activated. signal is output.

The controller 23 supplies a motor current to the electric motor 20 to operate the electric motor 20 when both the signals generated by the operation of the push lever 25 and the signal generated by the operation of the trigger unit 17 are input. As a result, the wheel is rotationally driven, the driver blade 16 is pushed up, and the piston 11 moves from the bottom dead center to the top dead center. Thereafter, the piston 11 moves from the top dead center to the bottom dead center, and the driver blade 16 descends. That is, the piston 11 reciprocates once between the bottom dead center and the top dead center, and accordingly the nail 18 is struck by the driver blade 16, and the nail 18 is driven out. In other words, the driving operation is performed once.

Next, a supply section and a barrier section provided in the driving machine 1 of this embodiment will be explained. Note that the driving machine 1 of this embodiment accommodates roll nail type nails 18 in a magazine 19 and drives the nails 18 fed by a feeder section 26. In other words, the plurality of nails 18 housed in the magazine 19 are connected in a row by wires 18e (see FIG. 4(b)).

Further, the injection section 8 included in the driving machine 1 includes a first injection section 8a shown in FIG. 2 and a second injection section 8b shown in FIG. It is provided with an injection port 8c formed by. A nail 18 can be placed inside the injection port 8c. That is, the nail 18 placed in the striking area 8d (see FIG. 6) of the injection port 8c is struck by the striking part 6.

The supply unit 27 shown in FIG. 2 includes a mechanism for supplying a plurality of nails 18 housed in the magazine 19 one by one to the striking area 8d of the injection port 8c. Specifically, the supply unit 27 includes a magazine (accommodating unit) 19 that accommodates a plurality of nails 18 connected in a row, and a magazine (accommodating unit) 19 that accommodates a plurality of nails 18 connected in a row, and a magazine (accommodating unit) 19 that accommodates a plurality of nails 18 connected in a row, and a magazine (accommodating unit) 19 that is located at the front in the front-rear direction Q from the rear end position B1 to the front end position F1 shown in FIG. A feeder section 26 that feeds the nail 18 to the striking area 8d by moving to the one side) is provided. Further, the supply section 27 has a supply passage 27a that supplies the nails 18 from the magazine 19 to the injection port 8c. Note that the rear end position B1 and the front end position F1 in the movement of the feeder section 26 are the front and rear end positions of the range in which the feeder section 26 can move in order to feed out the nails 18 to be struck.

Here, the operation of the feeder section 26 in the supply section 27 will be described. The feeder section 26 is connected to a movable iron core 33, and the movable iron core 33 is arranged within a cylindrical solenoid 32. Furthermore, the movable iron core 33 is always urged rearward in the longitudinal direction Q by the solenoid spring 32a. When a current is applied to the solenoid 32 in this state, a magnetic field is formed within the solenoid 32, and the movable iron core 33 is attracted to the front side in the front-rear direction Q and moves. As the movable iron core 33 moves forward, the feeder section 26 connected to the movable iron core 33 moves to the front end position F1, thereby feeding a predetermined nail 18 to the injection port 8c. Thereafter, when the application of current to the solenoid 32 is cut off, the movable iron core 33 returns to its original position due to the urging force of the solenoid spring 32a. That is, the feeder section 26 returns to the rear end position B1.

The feeder section 26 is provided with a first feed claw 26c for feeding the first nail 18a and a second feed claw 26b for feeding the second nail 18b (see also FIG. 6). Further, the feeder portion 26 is provided with a feeder spring 26a, and the feeder portion 26 is always urged toward the supply passage 27a side by the feeder spring 26a. Therefore, the first feeding claw 26c and the second feeding claw 26b of the feeder section 26 are pressed against the nails 18 arranged in the supply passage 27a, respectively.

Moreover, the magazine 19 has a nail guide (lid part) 30, and the nail guide (lid part) 30 rotates around a rotation shaft 30b to open the supply passage 27a to the outside and to the open state. It is possible to switch between the closed state and the closed state. Furthermore, the magazine 19 has a magazine cover 19a, and the magazine cover 19a is opened and closed by rotating around a rotation shaft 19b. By closing the nail guide 30 after closing the magazine cover 19a, the magazine cover 19a is locked in the closed state. Further, when replenishing the magazine 19 with nails 18, the nail guide 30 is opened, and then the magazine cover 19a is opened, thereby allowing the nails 18 to be replenished inside. When replenishing the magazine 19 with a plurality of nails 18, the nail guide 30 is opened and the nails are refilled through the opening 31.

Note that, as shown in FIG. 3(a), the nail guide 30 is rotatably provided with respect to a rotation shaft 30b attached to the injection part 8, and when performing a driving operation, the nail guide 30 is Step 30 is done in the closed state. Further, the nail guide 30 is provided with a pressing portion 30c, a claw portion 30d included in the pressing portion 30c, and a nail guide spring 30e. As shown in FIG. 3(b), the pressing portion 30c is always urged toward the supply passage 27a by the nail guide spring 30e. That is, the claw portion 30d provided on the pressing portion 30c is also always urged toward the supply passage 27a side. This claw portion 30d prevents the nail 18 sent forward from returning. The claw portion 30d has a shape with an inclined surface that allows the nail 18 to move forward and prevents it from moving backward.

Further, as shown in FIG. 2, the driving machine 1 is provided with a guide section 28 that guides the placement of the nails 18 when replenishing the supply section 27 with the nails 18. In this embodiment, as an example of the guide part 28, a case will be described in which a barrier part 28a is provided which is located in the supply passage 27a and can come into contact with the nail 18 as shown in FIG.

The barrier part 28a is rotatably provided in the second injection part 8b. Specifically, it is rotatably attached to a rotation shaft 8e provided in the second injection part 8b, and closes the supply passage 27a in conjunction with the opening/closing operation of the nail guide 30. Specifically, a torsion spring 29 is provided on the rotating shaft 8e, and the barrier portion 28a is always urged by the torsion spring 29 to close the supply passage 27a. On the other hand, the engaging portion 28d of the barrier portion 28a supported by the rotation shaft 8e is adapted to fit into a fitting portion 30a provided on the nail guide 30. That is, when the nail guide 30 is closed as shown in FIG. 3(b), the fitting portion 30a of the nail guide 30 fits into the engaging portion 28d of the barrier portion 28a. At this time, the contact surfaces of the fitting portion 30a and the engaging portion 28d are inclined surfaces, and when the fitting portion 30a and the engaging portion 28d are fitted, the barrier portion 28a is It is designed to rotate counterclockwise.

Thereby, when the nail guide 30 is closed, the barrier portion 28a rotates and the supply passage 27a is opened. On the other hand, when the nail guide 30 is opened as shown in FIG. 3(a), the engaging portion 28d of the barrier portion 28a is released. and closes the supply passage 27a.

By rotating the barrier part 28a in conjunction with the opening/closing operation of the nail guide 30 shown in FIG. No regulation. That is, when the feeder section 26 performs a supply operation of supplying the nails 18 as shown in FIG. 4, the nail guide 30 is in a closed state, and at that time the barrier section 28a opens the supply passage 27a. 4(a) shows the state before the feeder section 26 feeds out the leading nail 18a, and FIG. 4(b) shows the state after the feeder section 26 sends out the leading nail 18a toward the injection port 8c. .

Further, the barrier section 28a regulates the arrangement of the nails 18 when the feeder section 26 does not perform a supply operation of supplying the nails 18. For example, as shown in FIG. 5, the barrier portion 28a regulates the arrangement of the nails 18 when the nail guide 30 is opened. That is, when replenishing the magazine 19 with nails 18, the nail guide 30 is opened. In such a situation, the feeder section 26 does not perform the feeding operation of feeding out the nails 18. Therefore, when the feeder section 26 does not perform a supply operation of supplying the nails 18, the barrier section 28a closes the supply passage 27a and prevents the nails 18 from being disposed in the injection port 8c.

Note that the barrier portion 28a can prevent more than a predetermined number of nails 18 from being disposed toward the front (one) side in the front-rear direction Q from the rear end position B1 shown in FIG. Here, when the feeder section 26 is located at the front end position F1 and one nail 18 is arranged in the striking area 8d, the predetermined number is set to the front side of the feeder section 26 in the front-rear direction Q. This is the number of nails 18 to be placed. For example, as shown in FIG. 6(a), when the feeder section 26 feeds out the leading nail 18a of the plurality of nails 18, the feeder section 26 is at the front end position as shown in FIG. 6(b). The nails are arranged so that when one nail 18 is located at F1 and placed in the striking area 8d, the number of nails 18 placed on the front side of the feeder section 26 in the front-rear direction Q is one. Place 18. In other words, when the feeder section 26 feeds out only the leading nail 18a of the plurality of nails 18, the barrier section 28a determines the number of nails 18 disposed on the front side of the feeder section 26 located at the front end position F1. The nails 18 are arranged so that there are no more than two nails.

FIG. 7 is a schematic diagram showing a case where an erroneous operation is made when the feeder section 26 feeds out only the leading nail 18a. As shown in FIG. 7(a), if the leading nail 18a is placed in a position forward of the predetermined position due to an erroneous operation, the feeder unit 26 feeds out the second nail 18b, which causes ), two nails 18 are arranged in the striking area 8d, which tends to lead to poor striking. FIG. 8 shows a structure of a comparative example, in which the barrier portion 28a as shown in FIG. 4 is not provided. In the structure of this comparative example, as shown in FIG. 8(a), the leading nail 18a is placed in advance at the injection port 8c due to an erroneous operation, and when the feeder section 26 is operated in this state, the feeder section 26 is placed in the second position. The nail 18b is sent out. In this case, as shown in FIG. 8(b), two nails 18 are placed in the injection port 8c, which tends to cause poor impact.

Next, FIG. 9 shows a case where the feeder section 26 pushes the second nail 18b in the driving machine 1 equipped with the barrier section 28a of this embodiment. When the feeder section 26 performs a supply operation of supplying the nails 18, the barrier section 28a does not restrict the arrangement of the nails 18. That is, when the feeder section 26 performs a supply operation of supplying the nails 18, the nail guide 30 is in a closed state, and at that time, the barrier section 28a opens the supply passage 27a. 9(a) shows the state before the feeder section 26 feeds out the second nail 18b, and FIG. 9(b) shows the state after the feeder section 26 feeds out the second nail 18b toward the front side. be. Note that the barrier section 28a regulates the arrangement of the nails 18 when the feeder section 26 does not perform a supply operation of supplying the nails 18. For example, as shown in FIG. 10, the barrier portion 28a regulates the arrangement of the nails 18 when the nail guide 30 is opened. That is, in order to open the nail guide 30 even when the feeder part 26 replenishes the nails 18 so as to push the second nail 18b, the barrier part 28a closes the supply passage 27a and the nails 18 are placed in the injection port 8c. prevent them from doing so.

Here, as shown in FIG. 11(a), when the feeder section 26 feeds out the second nail 18b among the plurality of nails 18, as shown in FIG. 11(b), the feeder section 26 When one nail 18 is located at the front end position F1 and is placed in the striking area 8d, the number of nails 18 placed on the front side of the feeder part 26 in the front-rear direction Q is two. Nails 18 are placed at. In other words, when the feeder section 26 feeds out the second nail 18b of the plurality of nails 18, the number of nails 18 disposed on the front side of the feeder section 26 located at the front end position F1 becomes three or more. The nails 18 are arranged so that the

FIG. 12 is a schematic diagram illustrating a case where the feeder section 26 is erroneously operated when feeding the second nail 18b. As shown in FIG. 12(a), if the leading nail 18a is placed in a position forward of the predetermined position due to an erroneous operation, the feeder unit 26 feeds out the third nail 18c, which causes ), two nails 18 are arranged in the striking area 8d, which tends to lead to poor striking.

Similarly, as shown in FIG. 13(a), when the feeder section 26 feeds out the third nail 18c of the plurality of nails 18, the feeder section 26 moves as shown in FIG. 13(b). When one nail 18 is located at the front end position F1 and is placed in the striking area 8d, the number of nails 18 placed on the front side of the feeder part 26 in the front-rear direction Q is three. Nails 18 are placed at. In other words, when the feeder section 26 feeds out the third nail 18c of the plurality of nails 18, the number of nails 18 disposed on the front side of the feeder section 26 located at the front end position F1 becomes four or more. The nails 18 are arranged so that the

FIG. 14 is a schematic diagram showing a case where the feeder unit 26 makes an erroneous operation when feeding the third nail 18c. As shown in FIG. 14(a), if the leading nail 18a is placed in a position forward of the predetermined position due to an erroneous operation, the feeder section 26 feeds out the fourth nail 18d, which causes ), two nails 18 are arranged in the striking area 8d, which tends to lead to poor striking.

Therefore, according to the driving machine 1 of this embodiment, the reliability of the driving machine 1 is improved because the barrier part 28a is provided as the guide part 28 that can regulate the arrangement of the nails 18 delivered to the striking area 8d. can be done. That is, when the feeder section 26 is driven to feed out a predetermined nail 18 after the trigger operation is performed, it is possible to prevent nails 18 from being overloaded in the striking area 8d and causing a nail jam. Thereby, the reliability of the driving machine 1 can be improved by suppressing the occurrence of impact failures. Furthermore, since the frequency of clearing nail jams is reduced, the workability of the driving machine 1 can be improved.

Next, a modification of this embodiment will be described. The first modification shown in FIG. 15 has a structure in which a barrier section 28a that operates in conjunction with the movement of the feeder section 26 is provided. That is, when the trigger operation is performed, the feeder part 26 is driven and the barrier part 28a closes the supply passage 27a, and FIG. 15(a) shows a state in which the supply passage 27a is closed by the barrier part 28a. As the feeder section 26 moves forward, the push-down section 34 provided on the feeder section 26 presses the inclined surface of the engagement section 28e of the barrier section 28a. When the pressing part 34 presses the engaging part 28e, the supply passage 27a is opened in conjunction with the movement of the feeder part 26, as shown in FIG. Sent. Also in this first modification, the reliability of the driving machine 1 can be improved by providing the barrier portion 28a that can restrict the arrangement of the nails 18 to be delivered.

The second modification shown in FIG. 16 has a structure in which a barrier portion 28a that operates in conjunction with the trigger operation (or movement of the push lever 25) is provided. That is, when the trigger operation is performed, the push-down part 35 is driven in conjunction with the movement of the push lever 25, thereby causing the barrier part 28a to close the supply passage 27a. FIG. 16(a) shows a state in which the supply passage 27a is closed by the barrier portion 28a, and FIG. 16(b) shows a state in which the supply passage 27a is opened. That is, the barrier portion 28a may be operated in conjunction with the trigger operation, and as a result, the reliability of the driving machine 1 can be improved also in this second modification.

A third modification shown in FIG. 17 is a case where a display section 28b is provided as the guide section 28 in the supply passage 27a and indicates the placement location of the nail 18. By arranging the predetermined nails 18 in accordance with the position of the display portion 28b, it is possible to suppress overloading of the nails 18 into the striking area 8d, and the reliability of the driving machine 1 can be improved.

The present invention is not limited to the above-described embodiments, and can be modified in various ways without departing from the gist thereof. For example, the guide portion 28 that guides the placement of the nail 18 may be a wall portion 28c in three directions forming an injection port 8c as shown in FIG. This wall portion 28c is a part of the injection portion 8, and has a shape that surrounds the injection port 8c in three directions when viewed in the direction of impact of the piston 11 and the driver blade 16 (vertical direction P). The three directions are three directions around the injection port 8c, excluding the direction toward the supply passage 27a (the other side of the first direction). Since the injection port 8c is surrounded by the wall portion 28c in three directions, excessive loading of the nails 18 into the injection port 8c can be suppressed, and the reliability of the driving machine 1 can be improved.

DESCRIPTION OF SYMBOLS 1... Driving machine (work machine), 2... Housing, 3... Cylinder case, 4... Motor case, 5... Handle, 6... Hitting part, 7... Connecting part, 8... Injection part, 8a... First injection part, 8b...second injection part, 8c...injection port, 8d...impact region, 8e...rotation shaft, 9...injection passage, 10...cylinder, 11...piston, 12...piston chamber, 13...pressure accumulation chamber, 14...pressure accumulation container , 15... Damper, 16... Driver blade, 17... Trigger section, 17a... Trigger switch, 18... Nail (stop), 18a... Top nail, 18b... Second nail, 18c... Third nail, 18d... Fourth nail , 18e...Wire, 19...Magazine (housing section), 19a...Magazine cover, 19b...Rotating shaft, 20...Electric motor, 21...Output shaft, 22...Battery, 23...Controller (control unit), 24...Mating material , 25... Push lever, 26... Feeder part, 26a... Feeder spring, 26b... Second feed claw, 26c... First feed claw, 27... Supply part, 27a... Supply passage, 28... Guide part, 28a... Barrier part, 28b...display part, 28c...wall part, 28d...engaging part, 28e...engaging part, 29...torsion spring, 30...nail guide (lid part), 30a...fitting part, 30b...rotation shaft, 30c... Pressing part, 30d...Claw part, 30e...Nail guide spring, 31...Opening part, 32...Solenoid, 32a...Solenoid spring, 33...Movable iron core, 34...Pushing part, 35...Pushing part, B1...Rear end position, F1...Front end position, P...Vertical direction, Q...Anteroposterior direction (first direction), R...Right and left direction

Claims (9)

an injection part having an injection port in which a stopper can be placed;
a striking part that strikes the stopper disposed in a striking area of the injection port;
a supply unit supplying the stop to the striking area;
a guide part that guides the arrangement of the stopper when replenishing the supply part with the stopper;
A working machine with The supply unit includes a storage unit that accommodates a plurality of the stops connected in a row, and supplies the stops to the striking area by moving in one side in a first direction from a rear end position to a front end position. a feeder section to
The working machine according to claim 1, wherein the guide section is capable of restricting a number of the stops that are larger than a predetermined number from being disposed to one side in the first direction from the rear end position. The predetermined number is arranged on one side of the feeder part in the first direction when the feeder part is located at the front end position and one stopper is arranged in the striking area. 3. The work machine according to claim 2, wherein the number of the stops is equal to or greater than the number of the stops. The working machine according to any one of claims 2 to 3, wherein the guide section does not restrict arrangement of the stopper when the feeder section performs a supply operation of supplying the stopper. The supply section has a supply passage for supplying the stopper from the storage section to the injection port,
The storage section is switchable between an open state in which the supply passage is opened to the outside and a closed state in which it is not opened to the outside, and when in the open state, the stopper can be replenished inside. It has a lid part,
The working machine according to claim 2, wherein the guide section regulates the arrangement of the stopper when the lid section is in the open state. The working machine according to claim 2, wherein the guide section regulates the arrangement of the stopper when the feeder section does not perform a supply operation of supplying the stopper. The supply section has a supply passage for supplying the stopper from the storage section to the injection port,
The working machine according to claim 2, wherein the guide section has a barrier section that is located within the supply passage and can come into contact with the stopper. The supply section has a supply passage that supplies the stoppers from a housing section that accommodates a plurality of the stoppers to the injection port,
The working machine according to claim 1, wherein the guide portion is a display portion provided in the supply passage and indicating a location where the stopper is placed. 1 . The guide portion is a wall portion that is a part of the ejection portion and is provided in three directions other than the other side of the first direction with respect to the ejection port when viewed from the hitting direction of the hitting portion. Work equipment described in.

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