Driver

Abstract

To provide a driver that facilitates screw tightening and screw loosening operations in a narrow space.SOLUTION: The driver comprises a body extending in a first direction and having a tip portion at one end side, and a grip connected to the other end side of the body. The tip portion has a blade surface which, in plan view in the first direction, extends radially from the one end and projects in a direction perpendicular to the first direction. In the tip portion, a ventilation hole is provided in a surface that is located, with respect to the first direction, within a range on the one end side relative to a boundary of the other end side of the blade surface. Inside the body, a ventilation passage is provided which communicates with the ventilation hole.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a driver. [Background technology]

[0002] Patent Document 1 describes a screwdriver that sucks up screws. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2017-537806 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the screwdriver disclosed in Patent Document 1 has a cover around the tip, which can make it difficult to tighten or loosen screws in narrow spaces such as electrical facilities.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a screwdriver that makes it easy to tighten and loosen screws in narrow spaces. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, a driver according to one embodiment of the present disclosure comprises a main body extending in a first direction and having a tip portion at one end, and a grip portion connected to the other end of the main body, wherein the tip portion, when viewed in a plane in the first direction, extends radially from the one end and has a cutting edge surface that protrudes in a direction perpendicular to the first direction, and the tip portion has an air vent on a surface within the range of the one end side relative to the boundary of the cutting edge surface at the other end side in the first direction, and an air passage inside the main body that communicates with the air vent.

[0007] In a preferred embodiment, the grip further includes a suction device for lowering the air pressure in the air passage below the air pressure outside the main body.

[0008] In a preferred embodiment, the tool further includes a suction device that lowers the air pressure in the air passage below the air pressure outside the main body. The tip portion has a window that allows light to enter on a surface that is located on one side of the boundary on the other side of the cutting edge surface in the first direction. The main body further includes an optical sensor that detects the intensity of light incident through the window. When the optical sensor detects a decrease in the intensity of the incident light due to the influence of the screw, the suction device lowers the air pressure in the air passage below the air pressure outside the main body.

[0009] In a preferred embodiment, the tip portion has a rubber portion made of rubber in at least a portion of a range on one side of the boundary on the other side of the cutting edge surface in the first direction, and at least one ventilation hole penetrates the rubber portion.

[0010] In a preferred embodiment, the device further includes a suction device that reduces the air pressure in the air passage to be lower than the air pressure outside the main body. The suction device is a tube. The suction device reduces the air pressure in the air passage to be lower than the air pressure outside the main body by drawing air through the tube.

[0011] In a preferred embodiment, the tip portion has a plurality of ventilation holes. The ventilation path has a plurality of branch paths communicating with the ventilation holes and a merging path communicating with the plurality of branch paths. [Effects of the Invention]

[0012] According to the present disclosure, screw tightening work can be easily performed in narrow spaces. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is an overall view of a driver according to a first embodiment. [Figure 2] FIG. 2 is an enlarged view showing region II according to FIG. [Figure 3] FIG. 3 is a schematic cross-sectional view of the tip of the driver according to the first embodiment. [Figure 4] FIG. 4 is a plan view of the tip portion of the driver according to the first embodiment. [Figure 5] FIG. 5 is a schematic cross-sectional view of the driver according to the first embodiment. [Figure 6] FIG. 6 is a diagram showing a manner in which the driver according to the first embodiment is used. [Figure 7] FIG. 7 is a schematic cross-sectional view of a driver according to the second embodiment. [Figure 8] FIG. 8 is a schematic cross-sectional view of a driver according to the third embodiment. [Figure 9] FIG. 9 is a schematic cross-sectional view of a driver according to the fourth embodiment. [Figure 10] FIG. 10 is a diagram showing a manner of use of the driver according to the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] The present disclosure will be described in detail below with reference to the drawings. Note that the present disclosure is not limited to the following modes for carrying out the invention (hereinafter referred to as embodiments).

[0015] (First embodiment) FIG. 1 is an overall view of a screwdriver according to a first embodiment. As shown in FIG. 1, the screwdriver 1 includes a main body 100, a grip 200, and a suction device 300. As shown in FIG. 1, the screwdriver 1 according to the first embodiment is a so-called screwdriver, i.e., a screwdriver. In the example shown in FIG. 1, the screwdriver 1 is an H-shaped cross head screwdriver as defined by the Japanese Industrial Standards (JIS B 4633:1998), but this is merely an example and is not limiting. In the present disclosure, the light intensity may refer to at least one of the light quantity, luminous intensity, and illuminance. Furthermore, strong light refers to high light intensity, and weak light refers to low light intensity.

[0016] The main body 100 is a rod-shaped member that engages with the screw hole of a screw and has a length in one direction. The main body 100 has a tip portion 110 at one end in the length direction of the main body 100, and a grip portion 200 is connected to the other end in the length direction of the main body 100. In the following description, the length direction of the main body 100 will be referred to as the X direction. In this disclosure, the X direction is an example of a first direction. In addition, one end in the length direction of the main body 100 will be referred to as the tip side, and the other end in the length direction of the main body 100 will be referred to as the rear end side.

[0017] FIG. 2 is an enlarged view showing region II in FIG. 1. That is, FIG. 2 is an enlarged view of the tip portion of the driver according to the first embodiment. FIG. 3 is a schematic cross-sectional view of the tip portion of the driver according to the first embodiment. More specifically, FIG. 3 is a plan view of tip portion 110 in the X direction. Tip portion 110 is the portion of the tip of the driver that engages with the screw hole of the screw. In this disclosure, tip portion 110 refers to the region in the X direction that is distal to end point 116a on the rear end side of blade portion side surface 115 and groove surface 116, which will be described later. That is, tip portion 110 refers to the region of main body 100 that is distal to plane 110a that is perpendicular to the X direction and passes through end point 115a on the rear end side.

[0018] The shape of the tip portion 110 will be described in detail below. In the following description, the radiation direction refers to the radiation direction centered on the position of one end of the main body 100 when the tip portion is viewed in plan in the X direction as in Fig. 3. The rotation direction refers to the rotation direction centered on the position of one end of the main body 100 when the tip portion is viewed in plan in the X direction as in Fig. 3.

[0019] 2 and 3, four blade portions 111 are provided radially on the tip portion 110 in a plan view in the X direction. In the example of FIGS. 2 and 3, the blade portions 111 are provided radially around the central axis of the main body 100 so that the blade portions 111 form angles of 90° with each other. The tip portion 110 has, as its surfaces, a blade base surface 114, a cutting edge surface 113, an end surface 112, a blade side surface 115, and a groove surface 116.

[0020] The end face 112 is the face of the tip portion 110 that is closest to the tip and is the face toward the center of the blade portion 111 when viewed in a plane in the first direction. In other words, the end face 112 is a face that includes one end of the main body 100. In the example of FIGS. 2 and 3, the end face 112 has a conical shape.

[0021] The cutting edge surface 113 is a surface of the tip portion 110 that is located rearward of the end surface 112 and corresponds to the cutting edge of the blade portion 111. More specifically, the cutting edge surface 113 is a surface that extends radially from one end of the main body 100 in a plan view in the X direction and that protrudes in a direction perpendicular to the X direction. Here, protruding in a direction perpendicular to the X direction means that when the tip portion 110 is cut along a plane perpendicular to the X direction, the cutting edge surface 113 is located at a position on the cut surface that is farthest from the geometric center of the cut surface.

[0022] The blade base surface 114 is a surface of the tip portion 110 that is located on the rear end side of the blade tip surface 113 and extends in the first direction.

[0023] The blade side surfaces 115 are surfaces of the tip portion 110 that correspond to the side surfaces of the blade portion 111. More specifically, the blade side surfaces 115 are surfaces on both sides in the rotational direction of the cutting edge surface 113 and the cutting base surface 114. In the example of Fig. 3, the blade side surfaces 115 have a concave surface and extend radially from the end surface 112 in a plan view in the X direction.

[0024] The groove surface 116 is a surface located between the blade portion side surfaces 115 in the rotational direction. In other words, the groove surface 116 is a groove located between the blade portions 111. In the example of Fig. 3, the groove surface 116 extends radially from the end surface 112 in a plan view in the X direction.

[0025] The tip end portion is provided with a plurality of holes 118. The holes 118 are provided on a surface in a range on one side of a boundary 117 on the other side of the cutting edge surface 113 in the X direction. In the example of FIG. 2, the boundary 117 on the other side of the cutting edge surface 113 is the boundary 117 between the cutting edge surface 113 and the butt surface 114. In the present disclosure, being in a range on one side of the boundary 117 on the other side of the cutting edge surface 113 in the X direction refers to being in an area A on the tip side of the boundary 117 and the intersection line 117a, when a plane that passes through the boundary 117 and is perpendicular to the X direction is an intersection line 117a between the blade side surface 115 and the groove surface 116.

[0026] At least one of the holes 118 is a vent hole through which gas can pass. Region A is the region of the surface of tip portion 110 that faces the inner wall of the screw hole, so by providing a hole that is a vent hole on the surface in region A, the screw can be sucked when the air pressure in air passage 130 is lowered. In the example of Fig. 2, the hole that is a vent hole is an open hole, but this is not limited to this and it may be covered with a filter or the like as long as it allows gas to pass through.

[0027] In the example of Fig. 2, the hole 118 is provided on the tip side of the blade side surface 115 in region A. The blade side surface 115 in region A is the surface that is pressed against the screw hole by torque when loosening the screw, and this allows the screw to be more firmly adsorbed.

[0028] At least one of the holes 118 is a window that allows light to enter. Region A is a region on the surface of the tip portion 110 where external light is blocked by a screw. By providing the hole 118a as a window on the surface in region A, the intensity of the light incident through the window changes when a screw is present in the tip portion 110 of the screwdriver 1. Therefore, by detecting a decrease in the intensity of the light incident through the window using the optical sensor 120 described below, it is possible to detect whether a screw is inserted into the tip portion 110. In the example of FIG. 2, one of the holes 118, hole 118a, is a window that allows light to enter. Note that in the example of FIG. 2, the window hole 118a is an open hole, but this is not limited thereto, and it may be covered with a light-transmitting film or the like as long as it allows light to enter.

[0029] In the first embodiment, tip portion 110 has rubber portion 119 in at least a part of region A. Rubber portion 119 is made of rubber. Rubber portion 119 is provided so as to surround hole 118. In other words, hole 118 passes through rubber portion 119. As a result, when tip portion 110 is inserted into a screw hole, the shape of rubber portion 119 deforms to fit the shape of the wall surface of the screw hole, thereby improving adhesion to the screw when adsorbing the screw.

[0030] FIG. 3 is a schematic cross-sectional view of the tip portion of the driver according to the first embodiment. As shown in FIG. 3, the tip portion 110 has an air passage 130 inside. The air passage 130 is a hole that communicates with the hole 118. That is, the air passage 130 is a space through which the gas that flows in from the hole 118 flows. In the first embodiment, the air passage 130 extends in the X direction and penetrates the main body 100, but is not limited to this. In the example of FIG. 3, the air passage 130 has a branch path 131 and a merging path 132.

[0031] The branch path 131 is a space on the tip side that communicates with each of the plurality of holes 118. That is, each of the branch paths 131 is a space through which gas that has flowed in from at least one of the plurality of holes 118 flows. A plurality of branch paths 131 are provided inside the tip portion 110. Note that in the first embodiment, one branch path 131 communicates with one hole 118, but this is not limiting, and one branch path 131 may communicate with a plurality of holes 118.

[0032] The junction channel 132 is a space that communicates with the plurality of branch channels 131 on the tip side. That is, the junction channel 132 is a space where gases that flow in from the plurality of branch channels join together. The junction channel 132 penetrates the entire main body 100 in the X direction, excluding the tip portion 110.

[0033] By configuring the air passage 130 as described above, when manufacturing the main body 100, the air passage 130 can be formed by forming the merging passage 132 from the rear end side and then forming the branching passage 131 from the front end side, thereby making it easier to manufacture the driver 1.

[0034] In the first embodiment, an optical sensor 120 is provided inside the main body 100. The optical sensor 120 detects a decrease in the intensity of light incident through the hole 118a. The optical sensor 120 detects whether a screw is inserted into the tip portion 110 by measuring the decrease in the intensity of light incident into the hole 118a. Here, detecting a decrease in the intensity of incident light includes measuring whether the intensity of light incident into the hole 118a has fallen below a predetermined threshold. Here, the predetermined threshold is determined as a value between the intensity of light detected by the optical sensor 120 when a screw is inserted into the tip portion 110 and the intensity of light detected by the optical sensor 120 when no screw is inserted into the tip portion 110. In the example of FIG. 3 , the optical sensor 120 is provided in a branch path 131a communicating with the hole 118a. Note that, although the optical sensor 120 is a phototransistor in the first embodiment, it is not limited thereto and may be another optical sensor such as a photodiode.

[0035] As a result, when a screw is inserted into tip portion 110 and the incident light from hole 118a becomes weaker, the inside of branch path 131a becomes dark, and optical sensor 120 detects that the intensity of the incident light is below a predetermined threshold, whereas when a screw is not inserted into tip portion 110 and the incident light from hole 118a becomes strong, the inside of branch path 131a becomes brighter, and optical sensor 120 detects that the intensity of the incident light has exceeded the predetermined threshold. Therefore, optical sensor 120 can operate suction device 300, which will be described later, depending on whether or not a screw is inserted into tip portion 110.

[0036] 5 is a schematic cross-sectional view of the screwdriver according to the first embodiment. The grip 200 is a portion that an operator holds when tightening or loosening a screw. The grip 200 is connected to the rear end side of the main body 100. The grip 200 has a grip case 201, an anti-slip material 202, a light 203, a sensor light 204, a first button 205, a second button 206, a battery 207, and a circuit 208.

[0037] Grip case 201 is a case that stores the rear end side of main body 100. The shape and size of grip case 201 shown in Figures 1 and 5 are merely examples.

[0038] Anti-slip material 202 is provided on the side surface of grip case 201. In the example shown in Figures 1 and 5, it is provided so as to cover the entire side surface of grip case 201 in the rotational direction, but this is merely an example.

[0039] The light 203 is a light that irradiates light near the tip portion 110. In the first embodiment, the light 203 is an LED (Light-Emitting Diode) light, but is not particularly limited thereto. This allows light to be irradiated near the tip portion 110 without the need to grip an additional light source such as a flashlight, making it easier to tighten and loosen screws in a narrow space. In the example of FIG. 5, the light 203 is provided on the tip side of the grip case 201, but this is merely an example. Furthermore, light from the light 203 is taken in by the hole 118a. This ensures that the intensity of the light entering the hole 118a from the light 203 can be ensured even when no screw is inserted into the tip portion 110. Furthermore, even if the intensity of external light around the tip portion 110 decreases due to the darkness around the tip portion 110, it is less likely to be mistaken for a screw being inserted into the tip portion 110. In this way, regardless of the work environment, the optical sensor 120 can detect changes in the intensity of the incident light from the hole 118a (window) created by the screw, so the suction of the suction device 300 operates stably, making it easier to tighten and loosen screws in narrow spaces such as electrical facilities.

[0040] The sensor light 204 is a light that switches on and off based on the light sensor 120. In the first embodiment, the sensor light 204 is an LED light, but is not limited thereto. When the tip 110 is inserted into the screw hole, the light received through the hole 118a weakens. The sensor light 204 turns on when the light sensor 120 detects that the intensity of the light incident through the hole 118a is below a predetermined threshold. When the tip 110 is removed from the screw hole, the light received through the hole 118a strengthens. The sensor light 204 turns off when the light sensor 120 detects that the intensity of the light incident through the hole 118a exceeds the predetermined threshold. This makes it easy to check whether the screw is being held. Note that in the example shown in FIG. 5, the sensor light 204 is provided on the rear end side of the grip case 201, but this is merely an example.

[0041] The first button 205 is a power switch for the suction device 300, which will be described later. In the example of Fig. 1, the first button 205 is provided on the tip side of the non-slip material 202, but this is merely an example. The first button 205 is a switch that switches between a state in which the suction device 300 operates and a state in which the suction device 300 does not operate, but is not limited to this, and the first button 205 may be a switch that switches the suction device 300 to an operable state only while the button is pressed.

[0042] The second button 206 is a switch that switches on and off the light 203. In the example of Fig. 1, the second button 206 is provided on the tip side of the non-slip material 202, but this is just one example.

[0043] Battery 207 is a power source for light 203, sensor light 204, and suction device 300, which will be described later. The location of battery 207 is merely an example. Also, instead of battery 207, a power cord that can be connected to an external power source may be provided.

[0044] The circuit 208 is an electric circuit for operating the sensor light 204 and the suction device 300. In the example of Fig. 5, the optical sensor 120, the sensor light 204, the battery 207, and the suction device 300 are electrically connected to the circuit 208, but this is merely an example.

[0045] In the first embodiment, there is a space 209 inside the grip 200. The space 209 is located on the rear end side of the main body 100 and communicates with the ventilation path 130. This allows the gas in the ventilation path 130 to be drawn into the space 209.

[0046] In the first embodiment, an exhaust hole 210 is provided on the rear end side of the grip portion 200. The exhaust hole 210 is located on the rear end side of the space portion 209 and is connected to the space portion 209. As a result, when the piston 302 moves rearward due to the operation of the suction device 300, the gas on the rear end side of the piston 302 is pushed out through the exhaust hole 210.

[0047] Suction device 300 is a device that lowers the air pressure inside air passage 130 below the air pressure outside main body 100. In the first embodiment, suction device 300 is provided inside grip 200. This eliminates the need to separately connect suction device 300 to main body 100 or grip 200, making it easier to tighten and loosen screws in tight spaces.

[0048] In the first embodiment, the suction device 300 includes a motor 301 and a piston 302. That is, the suction device 300 according to the first embodiment is a piston pump that operates using the inner wall of the space 209 as a cylinder. As a result, by operating the motor 301 to move the piston 302 toward the rear end, the gas in the air passage 130 can be sucked into the space 209, and by operating the motor 301 to move the piston 302 toward the front end, the gas in the space 209 can be pushed out into the air passage 130.

[0049] 6 is a diagram showing how the driver according to the first embodiment is used. Here, how the driver 1 according to the first embodiment is used will be described in detail with reference to FIGS.

[0050] As shown in FIG. 5, when the tip 110 of the screwdriver is inserted into the screw hole of the screw S, the light entering through the hole 118a is weakened by the screw S, and the optical sensor 120 detects that the intensity of the light entering through the hole 118a has fallen below a predetermined threshold. When the optical sensor 120 detects that the intensity of the light entering through the hole 118a has fallen below the predetermined threshold, the suction device 300 operates the motor 301 to move the piston 302 toward the rear end, as shown in FIG. 5. At this time, because the interior of the space 209 on the tip side of the air passage 130 and the piston 302 is sealed, the gas in the air passage 130 is sucked into the space 209, and the air pressure inside the air passage 130 becomes lower than the air pressure outside the main body 100, allowing the screw S to be adsorbed onto the screwdriver 1.

[0051] As shown in FIG. 6, when the tip 110 of the screwdriver moves away from the screw hole of the screw S, the light taken in through the hole 118a becomes stronger, and the optical sensor 120 detects that the intensity of the incident light from the hole 118a has exceeded a predetermined threshold. When the optical sensor 120 detects that the intensity of the incident light from the hole 118a has exceeded the predetermined threshold, the suction device 300 operates the motor 301 to move the piston 302 toward the tip, as shown in FIG. 6. This prevents the gas in the air passage 130 from being sucked into the space 209, and the air pressure in the air passage 130 returns to the same pressure as outside the main body 100. This allows the screw to be sucked into the driver 1 when the tip 110 of the screwdriver is inserted again into the screw hole of the screw S.

[0052] In this way, when the tip 110 of the screwdriver is inserted into or removed from the screw hole of the screw S, the air pressure inside the air passage 130 is automatically switched to a state lower than the external air pressure or the same state, making it easier to tighten and loosen screws in a narrow space.

[0053] Although the screwdriver 1 according to the first embodiment has been described above, the screwdriver according to the first embodiment is not limited to the above. For example, the hole 118 may be provided in the end surface 112 or the cutting edge surface 113.

[0054] As described above, the screwdriver 1 according to the first embodiment includes a main body 100 extending in a first direction and having a tip portion 110 at one end, and a grip portion 200 connected to the other end of the main body. When viewed from above in the first direction, tip portion 110 has cutting edge surface 113 that extends radially from one end and protrudes in a direction perpendicular to the first direction. Tip portion 110 has an air vent (hole 118) on a surface that is located in a range (area A) on one end side of cutting edge surface 113 relative to a boundary 117 on the other end side of cutting edge surface 113 in the first direction. Inside main body 100, there is an air passage 130 that communicates with the air vent. This allows screws to be sucked in without the need for an attachment or the like around tip portion 110, facilitating screw tightening and unscrewing in tight spaces.

[0055] In a preferred embodiment, a suction device 300 is further provided inside the grip portion 200 to lower the air pressure inside the ventilation passage 130 below the air pressure outside the main body 100. This eliminates the need to separately connect the suction device 300 to the driver 1, making it easier to tighten and loosen screws in tight spaces.

[0056] In a preferred embodiment, the tool further includes a suction device 300 that lowers the air pressure within the air passage 130 below the air pressure outside the main body 100. The tip portion 110 has a window (hole 118a) that allows light to enter a surface located in a range (area A) on one side of the boundary 117 on the other side of the cutting edge surface 113 in the first direction. The main body further includes an optical sensor 120 that detects the intensity of light incident through the window. When the optical sensor 120 detects a decrease in the intensity of the incident light due to the influence of the screw, the suction device 300 lowers the air pressure within the air passage 130 below the air pressure outside the main body 100. This automatically switches the air pressure within the air passage 130 between a state lower than the external air pressure and a state equal to the external air pressure. This eliminates the need to manually switch the main body 100 between a state in which it sucks screws and a state in which it does not suck screws, making it easier to tighten and loosen screws in confined spaces.

[0057] In a desirable embodiment, tip portion 110 has rubber portion 119 made of rubber in at least a part of a range (area A) on one end side of boundary 117 on the other end side of cutting edge surface 113 in the first direction. At least one air hole (hole 118) penetrates rubber portion 119. This improves the adhesion between tip portion 110 and the screw, allowing the screw to be more firmly adsorbed.

[0058] In a preferred embodiment, tip portion 110 has a plurality of ventilation holes (holes 118). Air passage 130 has a plurality of branch passages 131 that communicate with the ventilation holes, and a merging passage 132 that communicates with the plurality of branch passages 131. This allows for the formation of air passage 130 by forming merging passage 132 from the rear end side and then forming branch passage 131 from the tip end side during the manufacture of the main body, thereby facilitating the manufacture of main body 100.

[0059] (Second embodiment) Fig. 7 is a schematic cross-sectional view of a driver according to a second embodiment. As shown in Fig. 7, a driver 1A according to the second embodiment differs from the first embodiment in that a suction device 300A includes a fan 302A. Hereinafter, the second embodiment will be described with reference to Fig. 7, but the same parts as those in the first embodiment will be denoted by reference numerals and description thereof will be omitted.

[0060] In the second embodiment, suction device 300A includes motor 301A and fan 302A. That is, suction device 300A according to the second embodiment is an electric fan provided in space 209. As a result, by rotating fan 302A using motor 301A, gas in air passage 130 can be sucked into space 209. Hereinafter, a usage mode of driver 1 according to the second embodiment will be described in detail.

[0061] When tip 110 of the screwdriver is inserted into the screw hole of screw S, the light entering through hole 118a is weakened by screw S, and optical sensor 120 detects that the intensity of the light entering through hole 118a has fallen below a predetermined threshold. In this way, when optical sensor 120 detects that the intensity of the light entering through hole 118a has fallen below a predetermined threshold, suction device 300 operates motor 301A to rotate fan 302A. At this time, because the interior of space 209 on the tip side of air passage 130 and fan 302A is sealed, gas in air passage 130 is sucked into space 209, and the air pressure in air passage 130 becomes lower than the air pressure outside main body 100, allowing screw S to be sucked onto driver 1.

[0062] When the tip 110 of the screwdriver moves away from the screw hole of the screw S, the light entering through the hole 118a becomes stronger, and the optical sensor 120 detects that the intensity of the light incident through the hole 118a has exceeded a predetermined threshold. In this way, when the optical sensor 120 detects that the intensity of the light incident through the hole 118a has exceeded a predetermined threshold, the suction device 300 stops the motor 301A and the rotation of the fan 302A. As a result, the gas in the air passage 130 is no longer sucked into the space 209, and the air pressure in the air passage 130 returns to the same air pressure as outside the main body 100. As a result, when the tip 110 of the screwdriver is inserted again into the screw hole of the screw S, the screw can be sucked onto the driver 1.

[0063] (Third embodiment) Fig. 8 is a schematic cross-sectional view of a driver according to the third embodiment. As shown in Fig. 8, the driver 1A according to the third embodiment differs from the first embodiment in that it does not include an optical sensor 120. Hereinafter, the manner of use of the driver 1B according to the third embodiment will be described in detail with reference to Fig. 8. The same parts as those in the first embodiment will be denoted by reference numerals and description thereof will be omitted.

[0064] The first button 205 according to the third embodiment is a switch that switches the suction device 300 on and off.

[0065] When first button 205 is pressed, suction device 300 operates motor 301 to move piston 302 toward the rear end. As a result, the gas in air passage 130 is sucked into space 209, and the air pressure in air passage 130 becomes lower than the air pressure outside main body 100, allowing screw S to be sucked onto driver 1.

[0066] When the first button 205 is pressed again, the suction device 300 operates the motor 301 to move the piston 302 toward the tip. As a result, the gas in the air passage 130 is no longer sucked into the space 209, and the air pressure in the air passage 130 returns to the same air pressure as outside the main body 100. As a result, when the tip 110 of the screwdriver is inserted again into the screw hole of the screw S, the screw can be sucked onto the screwdriver 1. Note that in the above example, the first button 205 is a switch that switches the suction device 300 between operating and stopping when pressed, but this is not limited to this. For example, the suction device 300 may operate only while the first button 205 is pressed.

[0067] (Fourth embodiment) Fig. 9 is a schematic cross-sectional view of a driver according to a fourth embodiment. As shown in Fig. 9, the driver 1C according to the fourth embodiment differs from the first embodiment in that the suction device 300 is a tube. The driver 1C according to the fourth embodiment will be described below with reference to Fig. 9, but the same parts as those in the first embodiment will be denoted by reference numerals and will not be described again.

[0068] In the fourth embodiment, the suction device 300B includes an inner tube 303, a rotary joint 304, an outer tube 305, and a mouthpiece 306. The suction device 300A according to the fourth embodiment is a device that sucks gas from the air passage 130 by the inhalation of an operator.

[0069] Internal tube 303 is provided inside grip case 201. Internal tube 303 is located on the rear end side of main body 100 and communicates with ventilation path 130. This allows gas in ventilation path 130 to be drawn into internal tube 303.

[0070] External tube 305 is connected to the rear end side of grip case 201. Internal tube 303 is located on the rear end side of internal tube 303 and communicates with the interior of internal tube 303. This allows gas within internal tube 303 to be drawn into external tube 305.

[0071] Rotary joint 304 connects inner tube 303 and outer tube 305. Rotary joint 304 is provided on the rear end side of grip case 201. This prevents outer tube 305 from twisting when screwing with driver 1C, making the work easier.

[0072] Mouthpiece 306 is provided at the end of outer tube 305 opposite grip portion 200. This allows the operator to inhale gas from air passage 130 by holding mouthpiece 306 in their mouths and inhaling.

[0073] Fig. 10 is a diagram showing how to use a screwdriver according to the fourth embodiment. As shown in Fig. 10, when a screw S is inserted into the tip portion 110 and an operator OP holds the mouthpiece 306 in his / her mouth and inhales, the gas in the air passage 130 is sucked into the inner tube 303 and the outer tube 305, and the air pressure in the air passage 130 becomes lower than the air pressure outside the main body 100, allowing the screw S to be adsorbed onto the tip portion 110.

[0074] As described above, the driver according to the fourth embodiment further includes a suction device that lowers the air pressure in the air passage below the air pressure outside the main body. The suction device is a tube. The suction device lowers the air pressure in the air passage below the air pressure outside the main body by drawing air through the tube. Even in this case, it is easy to work in a narrow space.

[0075] Although each embodiment has been described above, the present disclosure is not limited to the examples shown in the embodiments. Furthermore, the components in the above embodiments include those that can be easily imagined by a person skilled in the art, those that are substantially the same, and those that are within the so-called equivalent range. Furthermore, the components disclosed in the above embodiments can be combined as appropriate. [Explanation of symbols]

[0076] 1, 1A, 1B, 1C drivers 100 units 110 Tip 111 Blade part 112 End face 113 Cutting edge 114 Blade face 115 Blade side 116 Groove surface 117 Boundary 117a Intersection line 118 holes 119 Rubber part 120 Optical Sensor 130 Ventilation Channel 131 Fork in the Road 132 Confluence road 200 Grip 201 Grip case 202 Anti-slip material 203 Light 204 Sensor Light 205 First Button 206 Second Button 207 Battery 208 circuits 209 Space section 210 Exhaust vent 300, 300A, 300B suction device 301, 301A motor 302 Piston 302A Fan 303 Inner Tube 304 Rotary Joint 305 outer tube 306 Mouthpiece

Claims

1. a main body extending in a first direction and having a tip portion on one end side; a grip portion connected to the other end of the main body; Equipped with the tip portion has a cutting edge surface that extends radially from the one end and protrudes in a direction perpendicular to the first direction when viewed in a plan view in the first direction, the tip portion has an air hole on a surface of the cutting edge surface in a range on the one end side with respect to a boundary on the other end side in the first direction, A driver having an air passage inside the body that communicates with the air vent.

2. The driver according to claim 1 , further comprising a suction device inside the grip portion that reduces the air pressure inside the air passage below the air pressure outside the main body.

3. a suction device that lowers the air pressure in the air passage below the air pressure outside the main body; the tip portion has a window through which light can be incident on a surface of the cutting edge surface in a range on the one end side with respect to a boundary on the other end side in the first direction, the main body further includes a light sensor for detecting the intensity of light incident through the window; The driver according to claim 1 , wherein the suction device lowers the air pressure in the air passage below the air pressure outside the main body when the optical sensor detects a decrease in the intensity of the incident light due to the influence of the screw.

4. a suction device that lowers the air pressure in the air passage below the air pressure outside the main body; The suction device is a tube, The driver according to claim 1 , wherein the suction device draws air through the tube to lower the air pressure in the air passage below the air pressure outside the main body.

5. the tip portion has a rubber portion made of rubber in at least a part of a range on the one end side with respect to a boundary on the other end side of the cutting edge surface in the first direction, The driver of claim 1 , wherein at least one of the vent holes extends through the rubber portion.

Images