Shopping tools

Abstract

To provide a driving tool that suppresses the deformation of a coil spring due to the deflection of a shaft.SOLUTION: A driving tool 1 is equipped with a coil spring 13, a shaft 14 that penetrates the coil spring 13, a magazine 11 that supports a front end portion of the shaft 14 and a rear end portion of the shaft 14, and stores a fastener F, a supporting member 15 that suppresses the deflection of the shaft 14, and a driver 17 that strikes the fastener F. The supporting member 15 is configured to move in an axial direction of the shaft 14.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a driving tool. [Background technology]

[0002] There is known a driving tool that includes a feed structure (magazine) that biases fasteners connected in series with a pusher and a coil spring. Patent Document 1 describes a hammer tacker as such a driving tool that is used when attaching waterproof paper to roof panels. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-79474 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the driving tool described above, the coil spring is held in the magazine by a shaft that passes through the axis of the coil spring. In this case, when the driving tool is used and the front part of the magazine is struck against the object to be driven, the shaft may bend and crush the coil spring between the shaft and the inner wall of the magazine. When the coil spring is crushed and deformed, it loses its function, and as a result, the fastener is not fed properly.

[0005] SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide a driving tool that suppresses deformation of a coil spring that accompanies bending of a shaft. [Means for solving the problem]

[0006] The present application discloses a driving tool, the driving tool including: a coil spring; a shaft penetrating the coil spring; a magazine supporting a front end portion and a rear end portion of the shaft and accommodating fasteners; a member for suppressing bending of the shaft; and a driver for striking the fastener.

[0007] According to this aspect, the member suppresses bending of the shaft, thereby suppressing deformation and damage of the coil spring.

[0008] The fasteners include members that are driven from a driving tool, such as staples, nails, pins, and tacks. The fasteners may be stored in a magazine as consumables, with a plurality of fasteners connected in series.

[0009] The driving tools include manual driving tools, pneumatic driving tools, and electric driving tools.

[0010] The coil spring includes a compression coil spring and a constant force coil spring. The coil spring may be composed of a plurality of coil springs or other elastic members.

[0011] The member may be configured to be movable in the axial direction of the shaft.

[0012] At least a portion of the member may be disposed between the shaft and an inner surface of a bottom portion of the magazine.

[0013] The member may be movably attached to the shaft, for example the member may be formed with a hole through which the shaft passes.

[0014] The member may be attached to the magazine. For example, the member may have a portion that engages with at least one of two walls of the magazine. For example, the member may have a portion that abuts against an inner wall surface of a wall of the magazine. For example, the member may have a portion that abuts against an upper surface of a wall of the magazine.

[0015] The member may be fixedly attached to the magazine, for example the member may be fixedly attached to a bottom of the magazine at a location between the front and rear ends of the shaft.

[0016] The member may be attached to the coil spring. For example, the member may have a thickness in the axial direction of the shaft that is equal to or greater than the pitch of the coil spring, and may be attached to the coil spring by being sandwiched between the coil spring.

[0017] The member may be attached to the shaft and to the magazine, for example the member may have a hole through which the shaft passes and the member may have portions which engage with two walls of the magazine.

[0018] The member may be provided at an intermediate portion between the pusher and the rear end portion. When the pusher moves in the axial direction of the shaft, the member may be configured to move in the axial direction of the shaft in association with the movement of the pusher.

[0019] The driving tool may further include a pusher that biases the fasteners stored in the magazine toward the front end of the shaft, the pusher being configured to be movable in the axial direction of the shaft. When the pusher is moved toward the rear end, the member may be configured to be positionable in a region surrounded by the pusher and the inner surface of the bottom of the magazine.

[0020] The present application discloses a driving tool including a coil spring, a shaft penetrating the coil spring, a magazine supporting a front end portion and a rear end portion of the shaft, a pusher biasing fasteners housed in the magazine toward the front end portion, and a member movable in the axial direction of the shaft and including a portion provided between the shaft and an inner surface of a bottom portion of the magazine.

[0021] The member may be configured to move towards the rear end when the pusher moves towards the rear end and to move towards the front end when the pusher moves towards the front end.

[0022] The present application discloses a driving tool comprising: a coil spring, a shaft penetrating the coil spring, a magazine supporting a front end and a rear end of the shaft and housing fasteners, and a driver for striking the fasteners, the bottom of the magazine comprising a first portion in which a distance between a center of the shaft and an inner surface of the bottom of the magazine in a cross section perpendicular to the axial direction of the shaft is a first distance, a second portion disposed closer to the front end than the first portion in which a distance between the center of the shaft and an inner surface of the bottom of the magazine in a cross section perpendicular to the axial direction of the shaft is a second distance greater than the first distance, and a third portion disposed closer to the front end than the second portion in which a distance between the center of the shaft and an inner surface of the bottom of the magazine in a cross section perpendicular to the axial direction of the shaft is a third distance smaller than the second distance.

[0023] The second portion may be referred to as a relief portion.

[0024] The second portion may have a greater length in an axial direction of the shaft than the first portion.

[0025] The second portion may have a greater length in an axial direction of the shaft than the third portion.

[0026] The length of the second portion in the axial direction of the shaft may be greater than or equal to one-quarter and less than or equal to three-quarters of the length of the shaft.

[0027] The second portion may be provided at a position corresponding to a central region including a central position in the axial direction of the shaft.

[0028] The present application discloses a driving tool including a case, a magazine rotatably attached to the case, a driver provided in an area within a front end portion of the case for striking fasteners housed in the magazine, and a leaf spring attached to an area within the front end portion of the case and including a support portion for supporting the driver and an abutment portion supported by an inner wall of the front end portion.

[0029] The driving tool may further include a locking portion having a portion configured to be engageable with the magazine to lock the rotation of the magazine relative to the case, and a biasing member inserted between the driver and an inner wall of the front end of the case to bias the driver toward the rear end of the case. Here, the leaf spring may include a leaf spring attached to an area within the front end of the case, and including a first portion that biases the engagement of the locking portion with the magazine, a second portion (support portion) that supports the driver, a third portion through which the biasing member is inserted, and a fourth portion (abutment portion) that is supported by the inner wall of the front end.

[0030] The first portion, the second portion, the third portion and the fourth portion of the leaf spring may be provided in this order.

[0031] The first portion of the leaf spring may be configured to apply a force to the locking portion in a direction pressing the locking portion against the case, thereby urging the locking portion to engage with the magazine.

[0032] The second portion of the leaf spring may include a portion that prevents the driver from moving rearward by abutting against a rearward facing surface of the driver, and a portion that is inserted into a through hole provided in the driver to support the driver.

[0033] The inner wall of the front end portion may be formed facing toward the rear end portion of the case.

[0034] An inner wall of the front end portion may be provided with a recess for supporting the fourth portion of the leaf spring.

[0035] The recess provided in the inner wall of the front end portion may be recessed forward.

[0036] The driving tool described above may include a grip portion for a user to hold. Effect of the Invention

[0037] According to the present invention, it is possible to provide a driving tool that suppresses deformation of the coil spring due to bending of the shaft. [Brief description of the drawings]

[0038] [Figure 1] FIG. [Diagram 2] FIG. 2 is a perspective view of the driving tool magazine in an open state. [Diagram 3] 2 is a cross-sectional view of the driving tool as viewed from the side; FIG. [Figure 4] FIG. 4 is an enlarged cross-sectional view of the front part of the driving tool as viewed from the side. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] 4 is a cross-sectional view of the magazine as seen from the side. FIG. [Figure 9] FIG. [Figure 10] FIG. 2 is a perspective view of a magazine including a coil spring, a shaft, and a support member. [Figure 11] 1 is a cross-sectional side view of a magazine including a coil spring, a shaft, and a support member; [Figure 12] 13 is an explanatory diagram illustrating an attachment state of a support member on a shaft when the fastener guide is cut in the middle. FIG. [Figure 13] FIG. 2 is a perspective view of a driver and a first leaf spring. [Figure 14] 11 is a perspective view showing a state in which a first leaf spring is inserted into a through hole of a driver. FIG. [Figure 15] 1 is a side view of a portion of the driving tool for illustrating a configuration around a lock portion. FIG. [Figure 16] 10 is a cross-sectional side view of a portion of the driving tool for illustrating the configuration around the locking portion. FIG. [Figure 17]10A and 10B are explanatory diagrams showing other configurations of the support member. [Figure 18] 10A and 10B are explanatory diagrams showing other configurations of the support member. [Figure 19] 10A and 10B are explanatory diagrams showing other configurations of the support member. [Figure 20] FIG. 11 is a cross-sectional side view of a magazine according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0039] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are merely examples for explaining the present invention, and are not intended to limit the present invention to the embodiments.

[0040] <First embodiment> FIG. 1 is a perspective view of the driving tool 1. FIG. 2 is a perspective view of the driving tool 1 with the magazine 11 open. FIG. 3 is a cross-sectional view of the driving tool 1 as viewed from the side. FIG. 4 is an enlarged view of the front part of the driving tool 1 in FIG. 3. In this specification, "front-rear," "left-right," and "up-down" are based on the posture of the driving tool 1 in FIG. 1 and FIG. 2. The longitudinal direction of the driving tool 1 in FIG. 1 and FIG. 2 is the longitudinal direction X, the horizontal direction perpendicular to the longitudinal direction of the driving tool 1 is the left-right direction Y, and the vertical direction perpendicular to the longitudinal direction of the driving tool 1 is the up-down direction Z.

[0041] <Configuration of driving tools> The driving tool 1 is a manual driving tool configured such that a fastener (staple) F is driven out by a driver 17 from a driving-out port 80 at the front by striking the front part against an object to be driven into.

[0042] As shown in Figures 1 to 4, the driving tool 1 includes, for example, a case 10, a magazine 11, a fastener cover 12, a coil spring 13, a shaft 14, a support member 15, a pusher 16, a driver 17, a locking portion 18, a first leaf spring 19, a second leaf spring 20, a leaf spring holding member 21, a handle cover 22 as a gripping portion, and a biasing member 23.

[0043] As shown in Figs. 1 and 2, the case 10 is made of, for example, metal, is long in the front-rear direction X, and has, for example, a top surface portion 30, left and right side surfaces 31, a front surface portion 32, and is open at the bottom.

[0044] Fig. 5 is a perspective view of the case 10, and Fig. 6 is an exploded view of the parts of the case 10. As shown in Figs. 5 and 6, the case 10 has, for example, a handle 40, a handle cover 41, and a grip 42. The handle 40 is a main component of the case 10 and is long in the front-rear direction X. The handle 40 has, for example, a top plate 50 and left and right side plates 51. The side plates 51 are provided with shaft holes 52 for forming a rotation axis A for rotating the case 10 relative to the magazine 11.

[0045] The handle cover 41 is attached to the front of the handle 40. The handle cover 41 has, for example, a front plate 60, a top plate 61, and left and right side plates 62. The top plate 61 of the handle cover 41 is placed on top of the top plate 50 of the handle 40, and the side plates 62 of the handle cover 41 are placed on the outer sides of the side plates 51 of the handle 40, and in this state, the handle cover 41 and the handle 40 are fixed by welding. As a result, the top plate 61 of the handle cover 41 and the top plate 50 of the handle 40 form the top surface portion 30 of the case 10, the side plates 62 of the handle cover 41 and the side plates 51 of the handle 40 form the side surface portion 31 of the case 10, and the front plate 60 of the handle cover 41 forms the front surface portion 32 of the case 10.

[0046] Grip 42 is attached to the underside of the rear part of handle 40. Grip 42 has, for example, left and right side plates 70 and a bottom plate 71 as shown in Fig. 6. Side plates 70 of grip 42 are placed on the inside of side plates 51 of handle 40, and in this state, grip 42 and handle 40 are fixed to each other by welding. The rear part of handle 40 and grip 42 are inserted into and fixed to handle cover 22 as shown in Fig. 1. Handle cover 22 is made of, for example, rubber.

[0047] 2, 3, and 4 is configured to store a large number of fasteners F arranged in the front-rear direction X. The magazine 11 is made of metal, is long in the front-rear direction X, and has an ejection port 80 at the bottom front for ejecting the fasteners F.

[0048] Fig. 7 is a perspective view of magazine 11, Fig. 8 is a cross-sectional view of magazine 11 as viewed from the side, and Fig. 9 is an exploded view of parts of magazine 11. As shown in Figs. 7 to 9, magazine 11 has, for example, a magazine body 90, a fastener guide 91, and a magazine cover 92.

[0049] The magazine body 90 is long in the front-to-rear direction X and has, for example, a front plate 100, a bottom plate 101, left and right side plates 102, a first holding plate 103 at the front, and a second holding plate 104 at the rear, and has an open top.

[0050] The bottom plate 101 is a flat plate that is long in the front-rear direction X. As shown in Fig. 8, the bottom plate 101 has an embossing hole 80 at its front end that penetrates in the thickness direction (the up-down direction Z). The embossing hole 80 is formed immediately behind the front plate 100.

[0051] 7 to 9, the front portions of the side plates 102 and the front plate 100 extend upward in a U-shape to form a guide plate 120. The guide plate 120 is configured to guide a driver 17, which will be described later, to the ejection port 80.

[0052] The side plate 102 has left and right claws 121 for engaging with a locking portion 18 described below. The claws 121 are disposed rearward of and adjacent to the guide plate 120. A shaft hole 122 for forming a rotation shaft A for rotating the magazine 11 relative to the case 10 is provided at the rearmost portion of the side plate 102.

[0053] The left and right side plates 102 have inner surfaces in the left-right direction Y that are capable of accommodating a large number of fasteners F arranged in the front-rear direction X in the internal space.

[0054] The first holding plate 103 is provided at the front of the bottom plate 101 immediately behind the punch-out port 80 at the front of the magazine body 90, and stands perpendicular to the bottom plate 101. The second holding plate 104 is provided at the rearmost part of the bottom plate 101, and stands perpendicular to the bottom plate 101. Both ends of the shaft 14 are fitted into the first holding plate 103 and the second holding plate 104.

[0055] The magazine cover 92 is attached to the front of the magazine body 90. The magazine cover 92 has, for example, a front plate 140 and left and right side plates 141. The front plate 140 is placed on the outside of the front plate 100 of the magazine body 90, and the side plates 141 are placed on the outside of the side plates 102 of the magazine body 90, and in this state, the magazine cover 92 and the magazine body 90 are fixed by welding.

[0056] The fastener guide 91 is housed inside the magazine body 90. The fastener guide 91 is long in the front-rear direction X and has, for example, a bottom plate 160 and left and right side plates 161, and is open on the top, front and rear.

[0057] The bottom plate 160 is a flat plate that is long in the front-rear direction X. The left and right side plates 161 are long in the front-rear direction X and are parallel to each other. The upper surface of the bottom plate 160 becomes the inner surface of the bottom of the magazine 11.

[0058] 7, the outer dimensions of the left and right side plates 161 in the left-right direction Y are smaller than the inner dimensions of the left and right side plates 102 of the magazine body 90 in the left-right direction Y. Therefore, grooves 170 extending in the front-rear direction X are formed between the left and right side plates 161 of the fastener guide 91 and the left and right side plates 102 of the magazine body 90. When a fastener F is stored in the magazine 11, both legs of the U-shaped fastener F are inserted into these grooves 170, and the fastener F can move in the front-rear direction X along the grooves 170.

[0059] Fig. 10 is a perspective view of the magazine 11 including the coil spring 13, the shaft 14, and the support member 15, and Fig. 11 is a cross-sectional view of the magazine 11 including the coil spring 13, the shaft 14, and the support member 15, as viewed from the side. The shaft 14 is made of metal and has a cylindrical shape that is long in the front-rear direction X. As shown in Figs. 10 and 11, the shaft 14 is disposed inside the fastener guide 91 with its axial direction facing the front-rear direction X. The front end of the shaft 14 is fitted into a first holding plate 103. The rear end of the shaft 14 is fitted into a second holding plate 104.

[0060] The shaft 14 is inserted into the coil spring 13. The coil spring 13 is freely contractible in the front-rear direction X. The coil spring 13 is divided into, for example, two front and rear coil spring portions 13a and 13b, and a support member 15 is disposed therebetween. The rear end of the coil spring portion 13b (the rear end of the coil spring 13) abuts against the second holding plate 104, and the front end of the coil spring portion 13b abuts against the support member 15. The rear end of the coil spring portion 13a abuts against the support member 15, and the front end of the coil spring portion 13a (the front end of the coil spring 13) abuts against a contact plate 202 (described later) of the pusher 16.

[0061] The pusher 16 is disposed in front of the coil spring 13 inside the magazine body 90, and is configured to push the fastener F forward by the biasing force of the coil spring 13. The pusher 16 has, for example, a top plate 200 and left and right side plates 201, and is open on the front, rear and bottom.

[0062] Top plate 200 is placed on the upper surface of fastener guide 91, and side plate 201 is inserted into groove 170. As a result, pusher 16 is supported on the upper surface of side plate 161 of fastener guide 91 and is freely movable in the front-rear direction X along groove 170. Also, as shown in FIG 11, pusher 16 can push fastener F forward by the front surface of side plate 201.

[0063] The pusher 16 further has an abutment plate 202 therein, as shown in Fig. 11. The abutment plate 202 extends downward from the top plate 200, for example. The abutment plate 202 has a through hole 202a in the center, through which the shaft 14 is inserted. The front end of the coil spring 13 abuts against the rear surface of the abutment plate 202. The pusher 16 is pushed forward by the coil spring 13 at the abutment plate 202.

[0064] 10 and 11 is configured to suppress bending of the shaft 14. The support member 15 is attached so as to be supported by, for example, the shaft 14, or the shaft 14 and the magazine 11. The support member 15 is located near the center of the shaft 14 in the front-rear direction X.

[0065] FIG. 12 is an explanatory diagram in which the fastener guide 91 is cut in the middle to explain the attachment state of the support member 15 on the shaft 14. As shown in FIG. 12, the support member 15 has a rectangular plate shape and has a through hole 15a in the center through which the shaft 14 passes. That is, the support member 15 covers the entire circumference of the axis of the shaft 14. The through hole 15a has an inner diameter larger than that of the shaft 14, and the support member 15 is movable in the front-rear direction X along the shaft 14. The front end of the rear coil spring portion 13b of the coil spring 13 abuts against the rear surface 15b of the support member 15, and the rear end of the front coil spring portion 13a of the coil spring 13 abuts against the front surface 15c of the support member 15. Therefore, the support member 15 also moves in the front-rear direction X as the coil spring 13 expands and contracts in the front-rear direction X.

[0066] A lower surface 15d of the support member 15 abuts against the bottom plate 160 of the magazine 11. An upper surface 15e of the support member 15 is lower than a top plate 200 of the pusher 16, and the pusher 16 can also move onto the support member 15. In other words, the support member 15 is configured to be able to be positioned in a region surrounded by the pusher 16 and the upper surface of the bottom plate 160 of the magazine 11. Two side surfaces 15f of the support member 15 may or may not abut against the inner surface of a side plate 161 of the magazine 11.

[0067] As shown in Fig. 3, fastener cover 12 is configured to cover the top surface of magazine 11. Fastener cover 12 has a plate shape that is long in the front-rear direction X. Fastener cover 12 is configured to be rotatable in the up-down direction about a rotation axis A of case 10 and magazine 11. As shown in Fig. 4, the front end of fastener cover 12 has a locking portion 230 that is locked in a through hole 220 of driver 17 (described later) and is movable in the up-down direction Z within through hole 220.

[0068] The driver 17 is configured to push the fastener F to drive it out (strike it) from the drive-out port 80. The driver 17 is disposed in an area within the front end portion of the case 10 and is attached to the case 10. As shown in Figs. 13 and 14, the driver 17 has a substantially rectangular plate shape, and a through-hole 220 that is long in the up-down direction Z is formed in the center. The through-hole 220 has, for example, a rectangular shape that is long in the up-down direction. The driver 17 is disposed in the front portion of the case 10 with the plate surface facing forward and backward.

[0069] The driver 17 is held by a first leaf spring 19. The first leaf spring 19 has a plate shape that is long in the front-rear direction X in an area within the front end portion of the case 10. For example, the first leaf spring 19 has, from the rear to the front, a first portion 240, a second portion 241, a third portion 242, and a fourth portion 243, in this order.

[0070] 4, the first portion 240 abuts against the lock portion 18 and biases the lock portion 18 in a direction to engage with the magazine 11. The first portion 240 is fixed to the top surface portion 30 of the case 10 by a screw 250.

[0071] The second portion 241 is a portion (support portion) that supports the driver 17. As shown in Figs. 4, 13, and 14, the second portion 241 includes a portion 241a that prevents the driver 17 from moving backward by contacting, for example, a rear surface of the driver 17, and a portion 241b that is inserted into the through hole 220 of the driver 17 and supports the driver 17. The portion 241b has a smaller width in the left-right direction Y than the through hole 220 of the driver 17. The portion 241a is a portion that faces the front and is formed by the portion 241b having a smaller width in the left-right direction Y than the first portion 240.

[0072] 4, the third portion 242 is a portion through which the biasing member 23 is inserted. The third portion 242 is continuous with the portion 241b of the second portion 241 and has a plate shape that is long in the front-rear direction X. The third portion 242 has a width in the left-right direction Y that is smaller than that of the through-hole 220 of the driver 17. The biasing member 23 is, for example, a coil spring, and is inserted between the driver 17 and the inner wall of the front portion 32 of the case 10 to bias the driver 17 toward the rear side of the case 10.

[0073] The fourth portion 243 is a portion (contact portion) supported by the inner wall of the front portion 32 of the case 10. The fourth portion 243 has a plate shape that is continuous with the third portion 242 and extends in the front-rear direction X. The fourth portion 243 is inserted into and supported by a recess 63 formed in the inner wall of the front portion 32 of the case 10. The recess 63 opens toward the rear of the inner wall of the front portion 32 of the case 10, and is recessed into the front side of the inner wall of the front portion 32.

[0074] FIG. 15 is a side view of a part of the driving tool 1 for explaining the configuration around the locking part 18, and FIG. 16 is a cross-sectional view of a part of the driving tool 1 for explaining the configuration around the locking part 18. As shown in FIG. 15 and FIG. 16, the locking part 18 has a plate shape extending in the up-down direction Z. The plate surface of the locking part 18 faces the left-right direction Y. The locking part 18 has an upper part 18a that abuts against and is biased by the first part 240 of the first leaf spring 19, and a lower part 18b that engages with the claw part 121 of the magazine 11. The lower part 18b is configured to be swingable in the front-rear direction X with the upper part 18a as an axis. The lower part 18b is biased by the first leaf spring 19 so as to swing forward and engage with the claw part 121. The locking part 18 also has a pressing part 18c that allows the user to move the lower part 18b backward.

[0075] When the user presses pressing portion 18c to move lower portion 18b backward against the biasing force of first leaf spring 19, the engagement between lower portion 18b and claw portion 121 is released, and the case 10 is unlocked from magazine 11. On the other hand, when the user releases pressing portion 18c, lower portion 18b moves forward due to the biasing force of first leaf spring 19, and lower portion 18b engages with claw portion 121, thereby locking case 10 from magazine 11.

[0076] 3, 15 and 16, the leaf spring pressing member 21 presses down the first portion 240 of the first leaf spring 19 from below to prevent the first portion 240 from being excessively deformed. The leaf spring pressing member 21 is fixed to the top surface 30 of the case 10 by a screw 270.

[0077] The second leaf spring 20 is configured to bias the fastener cover 12 toward the magazine 11 (downward). The second leaf spring 20 has a plate shape that is long in the front-rear direction X. The rear portion of the second leaf spring 20 is fixed to the top surface 30 of the case 10 by a screw 280, and the front portion abuts against the upper surface of the fastener cover 12.

[0078] <Operation of the driving tool> Next, the operation of the driving tool 1 when it is in use will be described. For example, first, a fastener F is placed in the magazine 11 of the driving tool 1. At this time, as shown in FIG. 2, the lock between the case 10 and the magazine 11 is released by the locking portion 18, and the magazine 11 rotates and opens relative to the case 10 and the fastener cover 12. The fastener F is placed between the front end of the magazine 11, where the ejection opening 80 is located, and the pusher 16. Next, as shown in FIG. 1, the magazine 11 is closed, and the magazine 11 and the case 10 are locked by the locking portion 18.

[0079] When driving the fastener F, the user holds the handle cover 22 and strikes the front part of the magazine 11, which has the firing opening 80, against the object to be driven. When the magazine 11 strikes the object to be driven, the case 10 shown in FIG. 3 approaches the magazine 11, the driver 17 enters the guide plate 120 of the magazine 11, and pushes out the fastener F at the front of the magazine 11, so that the fastener F is fired from the firing opening 80. In this way, the fastener F is struck against the object to be driven. After that, the case 10 is separated from the magazine 11 by the urging force of the second leaf spring 20, and the driver 17 is released from the magazine 11. At this time, the pusher 16 in the magazine 11 pushes the fastener F forward, and the next fastener F is placed on the firing opening 80. The user repeats the above-mentioned action of striking the front part of the magazine 11 against the object to be driven, so that the fasteners F are continuously struck into the desired positions of the object to be driven.

[0080] According to this embodiment, the driving tool 1 has a support member 15 for suppressing bending of the shaft 14. When the magazine 11 of the driving tool 1 is slammed against an object to be driven into, an inertial force acts on the shaft 14 of the magazine 11, and the shaft 14 tends to bend toward the bottom (lower side) of the magazine 11. According to this embodiment, the support member 15 suppresses bending of the shaft 14. As a result, it is possible to suppress bending of the shaft 14 and the coil spring 13 from being crushed, deformed, or damaged.

[0081] Support member 15 is configured to be movable in the axial direction of shaft 14. Therefore, coil spring 13 can freely expand and contract along shaft 14 without being hindered by support member 15, and a sufficient amount of movement of pusher 16 can be ensured. Therefore, even with support member 15, a sufficient amount of fasteners F can be stored in magazine 11.

[0082] At least a portion of the support member 15 is provided between the shaft 14 and the upper surface of the bottom plate 160 of the magazine 11, so that when an inertial force acts on the shaft 14 toward the magazine 11 during driving, the lower surface of the shaft 14 is supported by the support member 15, effectively preventing the shaft 14 from bending.

[0083] Since the support member 15 is attached so as to be supported by the shaft 14 and the magazine 11, the bending of the shaft 14 can be suppressed more effectively.

[0084] Since the support member 15 is provided between the front end and the rear end of the shaft 14, the bending of the shaft 14 can be appropriately suppressed.

[0085] Since the support member 15 is configured to be positionable in a region surrounded by the pusher 16 and the upper surface of the bottom plate 160 of the magazine 11 when the pusher 16 is moved toward the rear end, the movement of the pusher 16 in the front-rear direction X in the magazine 11 is not hindered by the support member 15. Thus, the pusher 16 can be moved to the rear of the magazine 11, thereby ensuring a sufficient storage capacity of the fasteners F in the magazine 11.

[0086] The support member 15 described in this embodiment may have other configurations.

[0087] For example, the support member 15 may be attached so as to be supported only by the magazine 11. For example, as shown in Fig. 17, the support member 15 may have a substantially U-shape and include a first portion 300 interposed between the upper surface of the bottom plate 160 of the magazine 11 and the shaft 14, and a second portion 301 extending upward from both ends of the first portion 300 in the left-right direction Y and interposed between the inner surface of the side plate 161 of the magazine 11 and the shaft 14. The first portion 300 is supported by the bottom plate 160 of the magazine 11.

[0088] The support member 15 may be attached so as to be supported by the coil spring 13. For example, as shown in FIG. 18, the support member 15 has a plate shape shorter than the width of the bottom plate 160 of the magazine 11 in the left-right direction Y. The support member 15 is interposed between the upper surface of the bottom plate 160 of the magazine 11 and the shaft 14. The support member 15 is supported by the coil spring 13 by being sandwiched between adjacent windings of the coil spring 13 (between the coil spring portion 13a and the coil spring portion 13b). The support member 15 may have a thickness in the axial direction of the shaft 14 that is equal to or greater than the pitch (the distance between adjacent windings) of the coil spring 13. In this case, the coil spring 13 does not need to be divided before and after the support member 15, and may be continuous.

[0089] The support member 15 may be attached so as to be supported by the magazine 11 and the shaft 14. For example, as shown in FIG. 19, the support member 15 has two first parts 310 that abut against and are hooked onto the upper surfaces of the two side plates 161 of the magazine 11, a second part 311 that connects the two first parts 310 together and is located above the shaft 14, and a third part 312 that extends downward from the second part 311 and holds the shaft 14. The first parts 310 are slidable in the front-rear direction X along the side plates 161 of the magazine 11. The third part 312 has a plate shape with a plate surface facing the front-rear direction X, and a through hole 313 through which the shaft 14 is inserted is formed near the center of the third part 312. The third part 312 covers the entire circumference around the axis of the shaft 14. The third part 312 may abut against the inner surface of the side plate 161 of the magazine 11, or may be supported by the upper surface of the bottom plate 160 of the magazine 11.

[0090] Furthermore, the support member 15 may not be movable within the magazine 11, but may be fixed to the magazine 11 and the shaft 14 at a position between the front end and the rear end of the shaft 14.

[0091] In the present embodiment, the member for suppressing the bending of the shaft 14 is the support member 15, but it is not limited to the support member 15 and may be a member having another configuration.

[0092] <Second embodiment> In the driving tool 1 in the first embodiment, the support member 15 suppresses bending of the shaft 14 of the magazine 11 to suppress deformation of the coil spring 13, but the shape of the bottom of the magazine 11 may be changed to suppress deformation of the coil spring 13. Fig. 20 is a cross-sectional side view of the magazine 11 in the second embodiment.

[0093] For example, the bottom 340 of the magazine 11 is composed of the bottom plate 101 of the magazine body 90 and the bottom plate 160 of the fastener guide 91. The bottom 340 of the magazine 11 includes a first portion 350 in which the distance between the center P1 of the shaft 14 and the inner surface of the bottom 340 of the magazine 11 (the upper surface of the bottom plate 160) in a cross section perpendicular to the axial direction of the shaft 14 is a first distance L1, a second portion 351 provided on the front end side of the first portion 350 and in which the distance between the center P of the shaft 14 and the inner surface of the bottom 340 of the magazine 11 is a second distance L2 larger than the first distance L1, and a third portion 352 provided on the front end side of the second portion 351 and in which the distance between the center P1 of the shaft 14 and the inner surface of the bottom 340 of the magazine 11 is a third distance L3 smaller than the second distance L2. In addition, when the distance between the center P1 of the shaft 14 and the inner surface of the bottom 340 of the magazine 11 varies, the first distance L1, the second distance L2, and the third distance L3 are the shortest distances between the center P1 of the shaft 14 and the inner surface of the bottom 340 of the magazine 11.

[0094] The second portion 351 is a so-called relief portion that is farther from the shaft 14 than the other portions. The second portion 351 is provided at a position corresponding to a central region including the central position in the axial direction of the shaft 14. The length of the second portion 351 in the front-rear direction X may be greater than the length of the first portion 350 and may be greater than the length of the third portion 352. The length of the second portion 351 may be greater than or equal to one-quarter and less than or equal to three-quarters of the length of the shaft 14.

[0095] Other configurations of the driving tool 1 in the second embodiment are similar to those of the driving tool 1 in the first embodiment, and the same reference numerals are used and the description thereof is omitted.

[0096] According to this embodiment, when the magazine 11 of the driving tool 1 is struck against an object to be driven and an inertial force acts on the shaft 14 of the magazine 11, causing the shaft 14 to bend toward the bottom (lower side) of the magazine 11, the shaft 14 enters the second portion 351 and the coil spring 13 is not crushed between the shaft 14 and the inner surface of the bottom portion 340 of the magazine 11. As a result, it is possible to prevent the coil spring 13 from being crushed, deformed, or damaged.

[0097] The present invention can be modified in various ways without departing from the spirit of the invention. For example, some components in one embodiment can be added to other embodiments within the scope of ordinary creativity of a person skilled in the art. Also, some components in one embodiment can be replaced with corresponding components in other embodiments.

[0098] Although the preferred embodiment of the present invention has been described above, the present invention is not limited to such an example. It is clear that a person skilled in the art can come up with various modified or altered examples within the scope of the ideas described in the claims, and it is understood that these also naturally belong to the technical scope of the present invention.

[0099] For example, the configuration of the driving tool 1 is not limited to that of the above embodiment. For example, the first leaf spring 19 may have the second portion 241 and the fourth portion 243, and may not have the function of biasing the lock portion 18 to engage with the magazine 11 and the function of allowing the biasing member 23 to be inserted therethrough.

[0100] The coil spring 13 includes a compression coil spring and a constant output coil spring, and may be composed of a plurality of coil springs or other elastic members.

[0101] The present invention is not limited to manual driving tools, but can also be applied to pneumatic and electric driving tools. The present invention can also be applied to driving tools for driving fasteners other than staples, such as nails, pins, and tacks. The fasteners may be stored in a magazine as consumables in which a plurality of fasteners are connected in series. [Industrial Applicability]

[0102] INDUSTRIAL APPLICABILITY The present invention is useful in providing a driving tool that suppresses deformation of a coil spring that accompanies bending of a shaft. [Explanation of symbols]

[0103] 1 Driving tool 10 Cases 11 Magazine 12 Fastener cover 13 Coil spring 13a Coil spring part 13b Coil spring part 14 Shaft 15 Support member 15a through hole 15b Rear 15c front 15d Bottom 15e top 15f side 16 Pusher 17 Drivers 18 Rock Club 18a Upper 18b Lower 18c Pressing part 19 First leaf spring 20 Second leaf spring 21 Leaf spring retainer 22 Handle cover 23 Pressing member 30 Top section 31 Side part 32 Front part 40 Handle 41 Steering wheel cover 42 Grip 50 Tabletop 51 Side Panel 52 Shaft hole 60 Front Panel 61 Tabletop 62 Side Panel 63 Depression 70 Side Panel 71 Bottom plate 80 Launch port 90 Magazine body 91 Fastener guide 92 Magazine Cover 100 Front panel 101 Bottom plate 102 Side Panel 103 First retaining plate 104 Second retaining plate 120 Guide plate 121 Claw part 122 Shaft hole 140 Front Panel 141 Side Panel 160 Bottom plate 161 Side Panel 170 Groove 200 Tabletop 201 Side Panel 202 Contact plate 202a Through hole 220 Through hole 230 Locking part 240 First Part 241 Second Part 241a part 241b part 242 Third Part 243 Fourth Part 250 Screw 270 Screw 280 Screw 300 First Part 301 Second Part 310 First Part 311 Second Part 312 Third Part 313 Through hole 340 bottom 350 First Part 351 Second Part 352 Third Part A Rotational axis X Anteroposterior direction Y left / right direction Z vertical direction F Fastener P1 Shaft center

Claims

1. A coil spring and A shaft passing through the coil spring; a magazine supporting a front end of the shaft and a rear end of the shaft and containing fasteners; A member for suppressing bending of the shaft; a driver for striking the fastener; a pusher that biases the fasteners stored in the magazine toward a front end of the shaft, The pusher is configured to be movable in an axial direction of the shaft, When the pusher is moved toward the rear end, the member is configured to be able to be positioned in a region surrounded by the pusher and an inner surface of the bottom of the magazine. Driving tool.

2. The member is configured to be movable in the axial direction of the shaft. The driving tool according to claim 1.

3. At least a portion of the member is disposed between the shaft and an inner surface of the bottom of the magazine. The driving tool according to claim 1 or 2.

4. The member is attached to the shaft. A driving tool according to any one of claims 1 to 3.

5. The member is attached to the magazine. A driving tool according to any one of claims 1 to 4.

6. The member is provided between the front end and the rear end. A driving tool according to any one of claims 1 to 5.

7. A coil spring and A shaft passing through the coil spring; a magazine supporting a front end of the shaft and a rear end of the shaft and containing fasteners; a driver for striking the fastener; The bottom of the magazine a first portion in which a distance between a center of the shaft and an inner surface of a bottom portion of the magazine in a cross section perpendicular to an axial direction of the shaft is a first distance; a second portion provided closer to the front end than the first portion, the second portion having a second distance greater than the first distance between a center of the shaft and an inner surface of a bottom portion of the magazine in a cross section perpendicular to the axial direction of the shaft; a third portion provided closer to the front end than the second portion, the third portion having a third distance between a center of the shaft and an inner surface of a bottom portion of the magazine in a cross section perpendicular to the axial direction of the shaft, the third distance being smaller than the second distance; Driving tool.

8. The second portion is provided at a position corresponding to a central region including a central position in the axial direction of the shaft. The driving tool according to claim 7.

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