Electric work machine

Abstract

To enable easy removal of a battery with a simple structure.SOLUTION: An electric work machine includes an electric work part and a body part. The electric work part is operated by electric power supplied from a battery. The body part includes a battery holding part 22 having a holding space in which the battery 6 is inserted in an insertion direction to be held. The battery holding part has multiple openings. The openings include: a first opening 221 through which the battery passes when being inserted into the holding space; and a second opening 222 provided at a position which is spaced apart from a tip of the battery held in the holding space in the insertion direction.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an electric power tool. [Background technology]

[0002] Patent Document 1 discloses a technique for an electric working machine with a detachable battery, in which pressing a switch applies force from a spring member, making it easier to remove the battery. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-88853 Summary of the Invention [Problem to be solved by the invention]

[0004] If the battery is detachable, it is desirable that it be easy to remove, but the technology of Patent Document 1 requires the provision of a special mechanism such as a switch and a spring member to make it easier to remove the battery.

[0005] In view of the above circumstances, the present invention provides a simple structure that allows the battery to be easily removed. [Means for solving the problem]

[0006] (1) According to one aspect of the present invention, there is provided an electric working machine. The electric working machine includes an electric working unit and a main body. The electric working unit operates on power supplied from a battery. The main body includes a battery holding portion having a holding space into which a battery can be inserted in an insertion direction and held. The battery holding portion has multiple openings, including a first opening through which the battery passes when inserted and a second opening provided at a position away from the tip of the battery held in the holding space in the insertion direction.

[0007] According to this aspect, the battery can be easily removed with a simple configuration. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram showing the overall configuration of a chainsaw 1. FIG. [Figure 2] FIG. 1 is a diagram showing the chainsaw 1 as viewed from above. [Figure 3] FIG. 2 is a diagram showing the chainsaw 1 as seen from below. [Figure 4] FIG. 3 is a view taken along the arrow AA in FIG. 2. [Figure 5] 5 is an enlarged view of the vicinity of the battery 6 shown in FIG. 4. FIG. [Figure 6] 2 is an enlarged view of the vicinity of a battery 6 shown in FIG. 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. Various features shown in the following embodiments can be combined with each other.

[0010] <Embodiment> In this embodiment, a chainsaw for cutting trees, boards, etc. will be described as an example of an electric working machine according to the present invention.

[0011] FIG. 1 is a diagram showing the overall configuration of a chainsaw 1. FIG. 1 shows the chainsaw 1 as seen from the left. As shown in FIG. 1, the chainsaw 1 has defined up-down, front-rear, and left-right directions. In this embodiment, the up-down direction of the chainsaw 1 is defined as the vertical direction when the chainsaw 1 is placed on a flat, horizontal installation surface. The front-rear direction is defined as a direction perpendicular to the up-down direction, and the left-right direction is defined as a direction perpendicular to both the up-down and front-rear directions. The front-rear and left-right directions will be explained in detail later.

[0012] The chainsaw 1 comprises a main body 2, a working unit 3, an intake unit 4, a handle unit 5, and a battery 6. The working unit 3 is provided in the main body 2 and is an example of an electric working unit that is powered by electricity and acts directly on a work target when an operator uses the chainsaw 1 to perform work. In this embodiment, the work performed by the operator is cutting trees, boards, etc. The working unit 3 comprises a guide bar 31, a saw chain 32, and a lever 33. The guide bar 31 is a plate-shaped member that extends along the longitudinal direction A3, and the rear end of the guide bar 31 is attached to the main body 2. A circular saw chain 32 is wound around the outer periphery of the guide bar 31.

[0013] Although not shown in FIG. 1, the main body 2 houses a control board, a drive gear, a motor, etc. The saw chain 32 is engaged with the drive gear. The drive gear is driven to rotate by the motor. The control board executes a control process to control the rotation of the motor when the lever 33 is operated. With the above configuration, when the worker operates the lever 33, the motor controlled by the control board rotates the drive gear, and this rotational power rotates the saw chain 32 along the outer periphery of the guide bar 31.

[0014] The main body 2 is a housing (also called a case) made of resin or the like, and houses the motor and other components. The main body 2 includes a bottom 21, a battery holder 22, and a rear handle 23. The bottom 21 is the portion that contacts the installation surface when the chainsaw 1 is placed on the installation surface. In this embodiment, the bottom 21 includes a flat surface that contacts the installation surface. However, the bottom 21 may have a shape that contacts the installation surface at multiple edges or points, as long as the chainsaw 1 is stable when placed on the installation surface. The battery holder 22 detachably holds the battery 6. The rear handle 23 is provided on the rear side of the main body 2 and is the portion that the operator grips when performing electric work. The rear handle 23 is a rod-shaped portion that is long in the front-to-rear direction and is sized to be easy for the operator to grip.

[0015] The intake section 4 has an intake port 41 and forms a passage for sending the cooling air taken in through the intake port 41 into the inside of the main body section 2. The handle section 5 has a front handle 51 and a front hand guard 52. The front handle 51 is located on the front side of the main body section 2 and is the part that the worker grips when performing electrical work. The front handle 51 is located from the top to the left side of the main body section 2 and is designed to be held by switching between cutting the work object vertically and cutting it horizontally. The front hand guard 52 protects the hand gripping the front handle 51 from injury and also functions as a brake to stop the operation of the working section 3.

[0016] As described above, an operator holds the front handle 51 and the rear handle 23 while carrying the main body 2 of the chainsaw 1, and rotates the saw chain 32 to work on a target such as a tree. In the chainsaw 1, the side of the saw chain 32 where work is performed is defined as the front, and the side of the rear handle 23 held by the operator is defined as the rear, and the directions pointing forward and backward are defined as the front-to-back direction. In addition, the directions facing left and right when looking forward from the rear are defined as the left-to-right direction.

[0017] The battery 6 has an elongated shape extending along the longitudinal direction A3 and is inserted into the holding space 220 of the main body 2 along the insertion direction A1. Hereinafter, the rear end of the battery 6 when inserted along the insertion direction A1 will be referred to as the rear end 61, and the front end will be referred to as the front end 62. The battery 6 is removed along a removal direction A2 opposite to the insertion direction A1. Both the insertion direction A1 and the removal direction A2 are directions along the longitudinal direction A3 of the battery 6 when held in the battery holding portion 22. In this embodiment, the insertion direction A1 is a direction having a forward component and a downward component that is larger than the forward component. The removal direction A2 is a direction having a rearward component and an upward component that is larger than the rearward component.

[0018] As described above, the battery holding portion 22 has a holding space 220 into which the battery 6 can be inserted in the insertion direction A1 and held, and holds the battery 6 inserted in the holding space 220. The battery holding portion 22 is a collection of portions of the main body 2 that have surfaces that contact the holding space 220. This allows the battery 6 to be attached and detached to the battery holding portion 22. The battery holding portion 22 has multiple openings at the boundary between the holding space 220 and the external space 9. The multiple openings include a first opening 221 through which the battery 6 passes when inserted into the holding space 220 of the main body 2, and a second opening 222 provided at a position away from the tip 62 of the battery 6 inserted into the holding space 220 in the insertion direction A1. The second opening 222 is provided with a size that allows an operator's finger to pass through.

[0019] According to this aspect, by inserting a finger into the second opening 222 and pushing the tip 62 of the battery 6, a force can be applied to the battery 6 in the removal direction A2, making it easier to remove the battery 6 than when the second opening 222 is not provided. Also, since it is easier to provide the second opening 222 than when a removal mechanism including a spring member, a lever, or the like is provided, the chainsaw 1 can make it easier to remove the battery with a simpler configuration.

[0020] The first opening 221 is a location where the holding space 220 connects to the external space 9 on the rear end 61 side of the battery 6. The second opening 222 is a location where the holding space 220 connects to the external space 9 on the front end 62 side of the battery 6. In other words, when the battery holding portion 22 of the main body 2 is placed with the bottom surface 21 facing down, the second opening 222 is located lower than the first opening 221. According to this embodiment, the battery 6 can be inserted into the holding space 220 using its own weight, making it easier to insert the battery 6 compared to when the positional relationship between the first opening 221 and the second opening 222 is reversed.

[0021] As described above, the battery 6 is detachably attached to the holding space 220 of the main body 2, and supplies power to the working unit 3 while being held in the main body 2. The working unit 3 operates on power supplied from the battery 6 detachably attached to the main body 2 in this manner.

[0022] FIG. 2 is a diagram showing the chainsaw 1 as viewed from above. The main body 2 of the chainsaw 1 is provided with a non-slip surface 24 behind the first opening 221. The non-slip surface 24 is formed by a plurality of ribs that extend in the left-right direction. The non-slip surface 24 is the part that the operator's thumb touches when gripping the rear handle 23, and is also the part that the operator's fingers touch when removing the battery 6, and prevents the fingers from slipping when touching it. How to remove the battery 6 will be explained in detail later.

[0023] 3 is a diagram showing the chainsaw 1 as seen from below. The main body 2 has an exhaust port 25 in front of the second opening 222. The exhaust port 25 discharges cooling air, which is taken in through the intake port 41 and has cooled heat-generating components such as the motor arranged inside the main body 2, into the external space 9.

[0024] As described above, the battery holding portion 22 has the second opening 222 on the side of the front end 62 of the battery 6. This second opening 222 is an opening having a length B1 in the left-right direction. Here, this battery 6 is a battery 6 having a length B2 in the left-right direction that is longer than the length B1 of the second opening 222 in the left-right direction. In other words, a portion of the front end 62 of the battery 6 is covered by the bottom surface portion 21. As described above, the second opening 222 has a shape and size that prevents the battery 6 inserted into the holding space 220 from passing through the holding space 220 due to the bottom surface portion 21, etc. According to this embodiment, the strength of the main body portion 2 can be more easily obtained compared to when the second opening 222 has a shape and size that allows the battery 6 to pass through the holding space 220, like the first opening 221.

[0025] In this embodiment, the length B2 is at least twice as long as the length B1. Here, the value of (B2 / B1) is, for example, 2 to 10. Specifically, the value of (B2 / B1) is 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 6, 6.1, 6.2 , 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 8, 8.1, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 8.8, 8.9, 9, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8, 9.9, 10, and may be within a range between any two of the values ​​exemplified here. For example, the range of (B2 / B1) is not limited to 2 to 10, but may be 2.1 to 5.5 or 3.4 to 7.9.

[0026] With this configuration, the bottom surface 21 of the main body 2 covers more than half of the front end 62 of the battery 6 in the left-right direction. In other words, the bottom surface 21 of the main body 2 covers the left-right center (center line D1) of the front end 62 of the battery 6 on the second opening 222 side. The center line D1 is a position where the distance from both left and right ends of the battery 6 is distance B3, that is, a line that indicates the left-right center of the battery 6. According to this embodiment, it is easier to obtain strength for the main body 2 than when the left-right center of the front end 62 of the battery 6 is exposed.

[0027] As described above, the working unit 3 has a saw chain 32 and a guide bar 31. The guide bar 31 is provided on the right or left side of the left-right center of the main body 2. The second opening 222 is provided so that the center of the second opening 222 is located on the opposite side of the guide bar 31 from the left-right center (center line D2) of the rear handle 23 in the left-right direction of the main body 2. As shown in FIG. 2 , the center line D2 is a position where the distance from both left and right ends of the rear handle 23 is distance B4, that is, the line that indicates the left-right center of the rear handle 23.

[0028] In this embodiment, the guide bar 31 is provided to be located to the right of the center line D2, and the second opening 222 is provided to the left of the center line D2. According to this embodiment, compared to when the guide bar 31 and the second opening 222 are both provided to the right or left of the center in the left-right direction of the rear handle 23, it is possible to ensure a sufficient distance from the working unit 3 to the second opening 222, and therefore it is possible to prevent foreign matter such as chips generated during work from entering the holding space 220.

[0029] Moreover, exhaust port 25 is configured to be provided between working unit 3 and second opening 222. According to this configuration, foreign matter such as chips generated during work can be made less likely to enter holding space 220 by the air discharged from exhaust port 25. Furthermore, by directing the direction of the air discharged from exhaust port 25 to the side where working unit 3 is provided in the left-right direction (the right side in FIG. 4), foreign matter such as chips can be made even less likely to enter holding space 220.

[0030] 4 is a view taken along the arrow AA in FIG. 2. As shown in FIG. 4, the main body 2 has a first guide 26 that guides a first surface 63 of the battery 6 and a second guide 27 that guides a second surface 64 of the battery 6 opposite the first surface 63. In this embodiment, when the chainsaw 1 is placed on flat, level ground, the first surface 63 is the front surface of the battery 6 held by the battery holding part 22, and the second surface 64 is the rear surface of the battery 6 held by the battery holding part 22. A groove is formed along the longitudinal direction A3 on the side of the left and right surfaces of the battery 6 that faces the first surface 63, and the first guide 26 has a rail that extends along the insertion direction A1. By fitting the groove of the battery 6 into the rail of the first guide 26, the battery 6 is inserted in the insertion direction A1 and is held by the rail after insertion.

[0031] The second guide 27 is provided on the first opening 221 side of the second surface 64 of the battery 6 inserted in the holding space 220, at a position facing the battery 6. For example, if an operator drops the rear handle 23 side, or the rear side, in the direction of gravity and applies a force such as an impact in the front-to-rear direction in the figure to the battery 6, the impact can be dispersed to the first guide 26 and the second guide 27. According to this embodiment, damage to the first guide 26 due to an impact on the battery 6 can be suppressed compared to when the battery 6 is guided only by the first guide 26.

[0032] Fig. 5 is an enlarged view of the vicinity of the battery 6 shown in Fig. 4. In Fig. 5, in order to make the holding space 220 easier to understand, the part of the holding space 220 other than the part occupied by the battery 6 is shown painted white.

[0033] As described above, the second opening 222 is provided at a position away from the tip 62 of the battery 6 inserted into the holding space 220 in the insertion direction A1. That is, the battery 6 is held with the tip 62 retracted inside the second opening 222, as shown in Fig. 5. According to this embodiment, even if the chainsaw 1 is dropped onto flat ground, for example, the bottom surface 21 comes into contact with the ground. This prevents an impact from being directly transmitted to the battery 6 compared to when the tip 62 is held protruding from the bottom surface 21, making it possible to reduce the risk of damage to the battery 6.

[0034] In this embodiment, the second opening 222 is provided at a position below the front end 62 of the battery 6. According to this aspect, compared to a case where the second opening 222 is not provided below the front end 62, for example, it is less likely that a foreign object will enter through the second opening and damage the battery.

[0035] The battery 6 has a first recess 65 and a second recess 66 on the rear end 61 side of the second surface 64 described in Fig. 4. The first recess 65 and the second recess 66 are recesses that allow fingers to be hooked and force applied easily when removing the battery 6.

[0036] Meanwhile, the battery holding portion 22 of the main body 2 forms a gap space 223 on the first opening 221 side as part of the holding space 220. The gap space 223 is a space sandwiched between the second surface 64 of the battery 6 held in the holding space 220 and a portion of the opposing surface 224 facing the second surface 64, the portion being the first distance C1 or more from the second surface 64.

[0037] The first distance C1 is, for example, a distance longer than the thickness of a human finger. In Fig. 5, for example, distances C11, C12, and C13 between the second surface 64 and the opposing surface 224 are shown, but distance C11 = first distance C1, and distance C11 < distances C12 and C13. Therefore, in Fig. 5, the clearance space 223 extends up to the distance C11. Because the clearance space 223 is wide enough to fit a finger through, it is easier to hook a finger on the battery 6 than if the clearance space 223 were not formed.

[0038] Furthermore, the main body 2 has a clearance space 223 formed by the battery holding portion 22 and the battery 6 or the second guide 27, and the aforementioned non-slip surface 24 is provided on the opposing surface 224 facing the second surface 64 of the battery 6. To apply force by hooking the pad of a finger into the first recess 65 or the second recess 66 when removing the battery 6, the back of the finger contacts the opposing surface 224 and applies force using the contact point as a fulcrum, making it easier to apply force in the removal direction A2. In this case, the provision of the non-slip surface 24 stabilizes the fulcrum compared to a case without the non-slip surface 24, making it easier to apply force to remove the battery. In the embodiment, the non-slip surface 24 is formed by multiple ribs extending in the left-right direction. However, this is not limited to this. For example, the non-slip surface may have multiple protrusions, multiple recesses, or a surface with a sandpaper-like finish such as a compound or wavy surface.

[0039] Furthermore, even when the battery 6 is held in the holding space 220, the holding space 220 penetrates from the first opening 221 to the second opening 222. At the narrowest part 225 where the distance between the second surface 64 of the battery 6 and the opposing surface 224 of the battery holding portion 22 is the narrowest, the distance between the two surfaces is the second distance C2.

[0040] That is, the main body 2 forms the holding space 220 such that, from the first opening 221 to the second opening 222, the distance between the second surface 64 of the battery 6 held in the holding space 220 and the opposing surface 224 opposing the second surface 64 is equal to or greater than the second distance C2. According to this embodiment, even if an object smaller than the second distance C2 enters through the first opening 221, it escapes to the second opening 222. Therefore, it is possible to prevent foreign objects such as chips from accumulating in the holding space 220 compared to a case in which the holding space 220 does not penetrate from the first opening 221 to the second opening 222. Furthermore, because air can easily pass through the holding space 220, it is possible to prevent heat from building up in the battery 6.

[0041] FIG. 6 is an enlarged view of the vicinity of the battery 6 shown in FIG. 1. As shown in FIG. 6, the main body 2 has a third opening 226 that exposes a third surface 67 of the battery 6, which is sandwiched between the first surface 63 and the second surface 64. The third surface 67 is the surface facing left and right when the battery 6 is held by the battery holding part 22 when the chainsaw 1 is placed on flat, level ground. While FIG. 6 shows the third surface 67 on the left side of the battery 6, the main body 2 also has a third opening 226 that exposes the third surface 67 on the right side of the battery 6 to the outside. Note that the main body 2 may have the third opening 226 on only the left or right side. In either embodiment, the battery 6 is covered less than when the third opening 226 is not provided, and air stagnating in the holding space 220 is released to the outside through the third opening 226. This prevents heat from building up in the battery 6 and improves the cooling effect of the battery 6.

[0042] <Other embodiments> In the embodiment, a chainsaw has been described as an example of an electric work machine, but the invention is not limited to this. For example, a hedge trimmer, an engine cutter, etc. may also be used. In short, any electric work machine may be used as long as it has a working unit that operates on power supplied from a detachable battery in a main body.

[0043] In addition, in the embodiment, an example is disclosed in which at the narrowest portion 225 where the distance between the second surface 64 of the battery 6 and the opposing surface 224 of the battery holding portion 22 is the narrowest, the distance between the two surfaces is the second distance C2, but this is not limited to this, and the second distance C2 may be any length as long as the narrowest portion 225 can prevent batteries of different widths from being attached.

[0044] Furthermore, the shape of the battery holding portion 22 of the main body 2 may be different from that of the embodiment. If the shape of the battery holding portion 22 is different, the shape of the holding space 220 formed by the battery holding portion 22 will also be different. For example, although the clearance space 223 is formed in the embodiment, the clearance space 223 may not be formed. Even in this case, the battery 6 can be easily removed by pushing it through the second opening 222.

[0045] In addition, in the embodiment, the holding space 220 penetrates from the first opening 221 to the second opening 222 when the battery 6 is held, but it does not have to penetrate. In that case, there is a place where the second surface 64 of the battery 6 and the opposing surface 224 of the battery holding portion 22 come into contact with each other, thereby improving the stability of the held battery 6.

[0046] In the embodiment, the bottom surface 21 of the main body 2 covers the center in the left-right direction on the tip 62 side of the battery 6 on the second opening 222 side, but this center may be exposed. In that case, the second opening 222 is wider than when the center is covered, making it easier to press the tip 62 of the battery 6 with a finger.

[0047] Furthermore, in the embodiment, the distance from the second surface 64 to the opposing surface 224 of the battery 6 held in the holding space 220 of the main body 2 becomes longer as the battery 6 is closer to the second opening 222. In the example of Fig. 5, the distance C22 from the second surface 64 to the opposing surface 224 at a position closer to the second opening 222 is longer than the distance C21 from the second surface 64 to the opposing surface 224. Note that this relationship is not limited to the rear-facing second surface 64 of the battery 6, and may be the same for any of the forward-facing, left-right-facing surfaces.

[0048] That is, the distance from any one of the front, rear, left, and right sides of the battery 6 held in the holding space 220 to the part of the battery holding part 22 facing that side may be longer the closer to the second opening 222. In this way, the further away the battery 6 and the main body 2 are from each other the closer to the second opening 222, making it easier to insert a finger into the second opening 222 and push the battery 6 through the second opening 222 compared to when the distance between the battery 6 and the main body 2 does not change even at positions closer to the second opening 222.

[0049] <Additional Notes> Furthermore, it may be provided in the following aspects.

[0050] (2) In the electric operating machine, the second opening is located below the first opening.

[0051] According to this aspect, the weight of the battery can be utilized for insertion.

[0052] (3) In the electric working machine, the second opening is located below the tip of the battery.

[0053] According to this aspect, it is possible to make it less likely that foreign matter will enter through the second opening and damage the battery.

[0054] (4) In the electric working machine, the second opening has a shape and size that does not allow the battery inserted into the holding space to pass through.

[0055] According to this aspect, it is possible to easily obtain strength for the main body portion.

[0056] (5) In the electric working machine, the main body covers the center of the tip of the battery in the left-right direction on the second opening side.

[0057] According to this aspect, it is possible to further increase the strength of the main body portion.

[0058] (6) In the electric working machine, the distance from any of the front, rear, left, or right sides of the battery held in the holding space to the part of the battery holding portion facing that side is longer the closer it is to the second opening.

[0059] According to this aspect, the battery can be easily pushed through the second opening.

[0060] (7) In the electric working machine, the electric working part has a rear handle, a saw chain, and a guide bar, the guide bar is provided on the right or left side of the left-right center of the rear handle, and the second opening is provided on the opposite side of the guide bar from the left-right center of the rear handle.

[0061] According to this aspect, it is possible to prevent foreign matter from entering the space during work.

[0062] (8) In the electric work machine, the main body forms a gap space on the first opening side in which the distance between the side of the battery held in the holding space and the surface opposite to that side is a first distance or more.

[0063] According to this aspect, it is possible to make it easier to hook a finger on the battery.

[0064] (9) In the electric working machine, the main body has an anti-slip surface on the surface that forms the gap space.

[0065] According to this aspect, it is possible to easily apply force to remove the battery.

[0066] (10) In the electric work machine, the main body forms the holding space from the first opening to the second opening so that the distance between the side of the battery held in the holding space and the surface opposite to that side is a second distance or more.

[0067] According to this aspect, foreign matter can be prevented from accumulating in the space.

[0068] (11) In the electric working machine, the main body has a first guide that guides a first surface of the battery and a second guide that guides a second surface of the battery opposite to the first surface.

[0069] According to this aspect, it is possible to prevent damage to the first guide due to an impact on the battery.

[0070] (12) In the electric working machine, the main body has a third opening that exposes a third surface of the battery sandwiched between the first surface and the second surface to the outside.

[0071] According to this aspect, the cooling effect of the battery can be improved. Of course, this is not the case. Furthermore, the above-described embodiments and modifications may be combined in any desired manner.

[0072] Finally, while various embodiments of the present invention have been described, these are presented by way of example only and are not intended to limit the scope of the invention. The novel embodiments may be embodied in various other forms, and various omissions, substitutions, and modifications may be made without departing from the spirit of the invention. The embodiments and their modifications are intended to be included within the scope and spirit of the invention, as well as within the scope of the inventions and their equivalents as defined in the appended claims. [Explanation of symbols]

[0073] 1: Chainsaw 2: Main body 3: Working section 4: Intake section 5: Handle 6: Battery 21: Bottom part 22: Battery holder 23: Rear handle 24: Anti-slip 25: Exhaust port 26: First Guide 27: Second Guide 31: Guide bar 32: Saw chain 33: Lever 41: Air intake 51: Front handle 52: Front handguard 61: Rear end 62: Tip 63: 1st page 64: 2nd side 65: First recess 66: Second recess 67:Side 3 220: Holding space 221: First opening 222: Second opening 223: Interstitial space 224: Opposite surface 225: Narrowest part 226: Third opening

Claims

1. A portable electric work machine, It has an electric working unit and a main body, the main body includes a battery holding portion that holds a battery, the electric working unit is provided at the front of the electric working machine and is operated by power supplied from the battery held in the battery holding unit, The battery has an elongated shape extending along a longitudinal direction, and when held, has a left side surface facing the left side of the electric operating machine, a right side surface facing the right side, a front side surface facing the front side, and a rear side surface facing the rear side, all along the longitudinal direction; the battery holding portion forms a holding space capable of holding the battery, and holds the battery inserted into the holding space in an insertion direction by a first guide that guides the front side surface and a second guide that guides the rear side surface; the insertion direction is a direction along the longitudinal direction of the battery held in the holding space, The battery holding portion further has a plurality of openings, the openings include a first opening through which the battery passes when inserted, and a second opening provided at a position opposite to a front end surface of the battery held in the holding space, the front end surface facing the insertion direction, The second opening is provided with a size that allows an operator's finger to pass through but does not allow the battery to pass through. thing.

2. The electric operating machine according to claim 1, the second opening is located in a direction toward a lower side of the electric operating machine than the first opening, The downward direction is the vertically downward direction when the electric operating machine is placed on a flat and horizontal installation surface.

3. The electric operating machine according to claim 2, The second opening is located in a direction toward the lower side of the front end surface of the battery.

4. In the electric operating machine according to any one of claims 1 to 3, The second opening has a shape and size that does not allow the battery inserted into the holding space to pass through.

5. The electric operating machine according to claim 4, The main body has a cover portion on the second opening side that covers a central portion in the left-right direction of the tip surface of the battery.

6. The electric operating machine according to any one of claims 1 to 5, The main body is arranged such that the distance from any one of the left side, right side, front side, and rear side of the battery held in the holding space to a first point facing that surface of the battery holding part is longer than the distance from that surface to a second point facing that surface of the battery holding part, and the first point is positioned closer to the second opening than the second point.

7. In the electric operating machine according to any one of claims 1 to 6, The electric working unit has a rear handle, a saw chain, and a guide bar, and the guide bar is provided on the right or left side of the center of the rear handle in the left-right direction, The second opening is provided on the opposite side of the guide bar from the center of the rear handle in the left-right direction.

8. The electric operating machine according to any one of claims 1 to 7, The main body forms a gap space on the first opening side, in which the distance between the side of the battery held in the holding space and the surface opposite to that side is equal to or greater than a first distance that is longer than the thickness of a human finger.

9. The electric operating machine according to claim 8, The main body has a non-slip surface on the surface that forms the gap space.

10. The electric operating machine according to any one of claims 1 to 9, The main body forms the holding space from the first opening to the second opening so that the distance between the side of the battery held in the holding space and the surface opposite that side is at least a second distance longer than the size of a foreign object that is expected to enter the holding space.

11. The electric operating machine according to any one of claims 1 to 10, The main body has a third opening that exposes the left side surface or the right side surface of the battery to the outside and releases heat from the battery.

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