Electric working equipment

Abstract

The present application provides a kind of electric operation equipment.Charging type concrete vibrator (1) includes motor (10) and the motor containing portion (4) for containing motor (10).In addition, concrete vibrator (1) includes battery holding portion (7) and battery cover (8), wherein the battery holding portion (7) is connected to motor containing portion (4), and battery pack (90) can be disassembled;The battery cover (8) covers the battery pack (90) held in the battery holding portion (7) in whole.And, battery cover (8) is set in a detachable manner relative to battery holding portion (7).Accordingly, even with battery cover, different size batteries can be used, and damage to the battery cover can also be easily addressed.

Description

TECHNICAL FIELD

[0001] The present application relates to an electric power tool that is powered by a battery. BACKGROUND

[0002] In an electric power tool such as a rechargeable screwdriver drill, a rechargeable concrete vibrator, and the like, a rechargeable electric power tool that is powered by a mounted battery is known. Such a rechargeable electric power tool is sometimes provided with a cover for protecting the mounted battery. For example, in a rechargeable blender disclosed in Patent Literature 1, a battery cover for covering a mounted battery pack (battery) is provided at a battery mounting portion of a main body case. The battery cover is connected to the battery mounting portion in an openable and closable manner by a hinge.

[0003] [Patent Literature]

[0004] [Patent Literature]

[0005] Patent Literature 1: Japanese Patent Application Laid-Open No. 2020-6288 SUMMARY

[0006] [Problems to be Solved by the Invention]

[0007] The battery cover of the above-described related art is formed to correspond to a battery of one size, and therefore, a battery of a larger size cannot be used. If the battery cover is designed to be larger in order to accommodate a battery of the largest size, the entire device becomes large.

[0008] In addition, when the battery cover is damaged, it takes time to replace or cope with the damage.

[0009] Therefore, an object of the present application is to provide an electric power tool that can use batteries of different sizes even if a battery cover is provided, and that can easily cope with damage to the battery cover.

[0010] In addition, another object of the present application is to provide an electric power tool that can maintain the compactness of the entire device even if a battery of a larger size is used, and that can easily cope with damage to the battery cover.

[0011] [Technical Solution to Solve the Problems]

[0012] To achieve the above object, a first aspect of the present application is an electric power tool, characterized by comprising a motor, a motor case, a battery holding portion, and a battery cover, wherein

[0013] the battery holding portion is provided with a battery mounting portion for mounting a battery, and

[0014] The motor housing houses the motor.

[0015] The battery holding portion is connected to the motor housing and is capable of attaching and detaching the battery.

[0016] The battery cover entirely covers the battery held in the battery holding portion.

[0017] The battery cover is provided to the battery holding portion in a detachable manner.

[0018] To achieve the above object, a second aspect of the present application is an electric power tool, characterized in that

[0019] having a motor, a motor housing, a battery holding portion, and a battery cover, wherein

[0020] The motor housing houses the motor.

[0021] The battery holding portion is connected to the motor housing and is capable of attaching and detaching the battery.

[0022] At least two types of a first battery and a second battery larger than the first battery are selectively attachable and detachable in the battery holding portion.

[0023] At least two types of a first battery cover entirely covering the first battery and a second battery cover entirely covering the second battery are selectively attachable and detachable in the battery holding portion.

[0024] [Effects of the Invention]

[0025] According to the present application, since the battery cover is provided to the battery holding portion in a detachable manner, different sizes of batteries can be used.

[0026] In addition, according to the present application, since a battery cover that matches the battery can be selected, even if a larger size battery is used, the overall compactness can be maintained.

[0027] Also, according to the present application, even if the battery cover is damaged, it can be easily replaced or the like. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a perspective view of a rechargeable concrete vibrator according to a first embodiment.

[0029] Figure 2 is a central longitudinal sectional view of the rechargeable concrete vibrator according to the first embodiment.

[0030] Figure 3 is an enlarged view of the battery holding portion of Figure 2

[0031] ​Figure 4 is a perspective view of the battery holding portion, the battery cover, and the battery pack of the first mode, respectively viewed from the rear.

[0032] Figure 5 is a perspective view of the battery holding portion, the battery cover, and the battery pack of the first mode, respectively viewed from the front.

[0033] Figure 6 is an A-A sectional view of Figure 3 .

[0034] Figure 7 is a B-B sectional view of Figure 3 .

[0035] Figure 8 is a C-C sectional view of Figure 3 .

[0036] Figure 9 is a D-D sectional view of Figure 3 .

[0037] Figure 10 is an E-E sectional view of Figure 3 .

[0038] Figure 11 is an explanatory view showing a state in which the battery pack is attached to or detached from the battery holding portion of the first mode.

[0039] Figure 12 is a perspective view of the battery holding portion, the larger-sized battery cover, and the larger-sized battery pack of the first mode, respectively viewed from the rear.

[0040] Figure 13 is an explanatory view showing a state in which the larger-sized battery pack is attached to or detached from the battery holding portion of the first mode.

[0041] Figure 14 is an enlarged view of the portion corresponding to Figure 3 of the battery holding portion of the first mode to which the larger-sized battery pack is attached.

[0042] Figure 15 is an explanatory view showing a state in which the battery pack is attached to or detached from the battery holding portion of the blender according to the second mode.

[0043] Figure 16 is an explanatory view showing a state in which the larger-sized battery pack is attached to or detached from the battery holding portion of the blender according to the second mode.

[0044] Figure 17 is an enlarged perspective view of an example in which the battery cover is fixed to the battery holding portion of the concrete vibrator according to the third mode by a screw.

[0045] Figure 18 is a central longitudinal sectional view of Figure 17 .

[0046] Figure 19 is a perspective view of the battery holding portion, the battery cover, and the battery pack of the third mode, respectively, viewed from the rear.

[0047] Figure 20 is a perspective view of the battery holding portion, the battery cover, and the battery pack of the third mode, respectively, viewed from the front.

[0048] Figure 21 is an explanatory view showing a state in which the battery pack is attached to or detached from the battery holding portion of the third mode.

[0049] Figure 22 is an enlarged perspective view of another example in which the battery cover is fixed to the battery holding portion of the concrete vibrator according to the fourth mode by screws.

[0050] Figure 23 is a central longitudinal sectional view of Figure 22 .

[0051] Figure 24 is a perspective view of the battery holding portion, the battery cover, and the battery pack of the fourth mode, respectively, viewed from the rear.

[0052] Figure 25 is a perspective view of the battery holding portion, the battery cover, and the battery pack of the fourth mode, respectively, viewed from the front.

[0053] Figure 26 is an explanatory view showing a state in which the battery pack is attached to or detached from the battery holding portion of the fourth mode.

[0054] [Legend]

[0055] 1: rechargeable concrete vibrator; 2: main body case; 4: motor housing portion; 5: controller housing portion; 6: grip portion; 7, 307, 407: battery holding portion; 8, 8A, 308, 408: battery cover; 10: motor; 50: controller; 65: switch; 75: upper wall portion; 76: front wall portion; 77: recess for main body cover; 80: guide plate; 83: terminal stand; 90, 90A: battery pack; 100, 100A: main body cover; 101, 101A: opening and closing cover; 103: upper plate; 104: transverse plate; 105: lower plate; 106: front plate; 107: recess for opening and closing cover; 109: hook-plate; 112: main body side locking claw; 120: rear plate; 121: rear upper plate; 122: rear transverse plate; 123: rear lower plate; 124: cover side locking claw; 140: mixer; 331: screw; 431: first screw (screw); 432: second screw (screw). DETAILED DESCRIPTION

[0056] An embodiment of the present application will be described below with reference to the drawings.

[0057] [First Mode]

[0058] Figure 1 is a perspective view of a charging type concrete vibrator (hereinafter referred to as "concrete vibrator") as an example of the electrically operated equipment according to the first mode of the present application. Figure 2 is a central longitudinal sectional view of the concrete vibrator.

[0059] The concrete vibrator 1 has a main body case 2. The main body case 2 is assembled from right side by using a plurality of screws 3, 3,... from right side to left and right split cases 2a, 2b. The main body case 2 has a motor housing portion 4, a controller housing portion 5, a grip portion 6, and a battery holding portion 7. A battery cover 8 is detachably mounted to the battery holding portion 7.

[0060] The motor housing portion 4 is a cylinder shape extending in the front-rear direction, and houses a motor 10. A front cover 11 is assembled to the front end of the motor housing portion 4. The front cover 11 is fixed to the motor housing portion 4 by a plurality of screws 12, 12,... from the front. The front cover 11 has a cylinder portion 13 in the center. A vibration rod 14 is connected to the top end of the cylinder portion 13.

[0061] The motor 10 is an inner rotor type brushless motor having an outer stator 15 and a rotor 16 disposed inside the stator 15. The motor 10 is housed in a posture in which a rotation shaft 25 of the rotor 16 extends in the front-rear direction. The stator 15 is supported between upper and lower support ribs 17, 17 protrudingly provided to inner surfaces of the left and right split cases 2a, 2b. The stator 15 has a stator core 18 and insulators 19A, 19B disposed to the front and rear of the stator core 18. A plurality of coils 20, 20,... are wound on the stator core 18 via the insulators 19A, 19B. Each coil 20 is three-phase wired on the rear insulator 19B. Three-phase power supply lines 22 are drawn from a connector 21 screwed to the lower end of the insulator 19B. The power supply lines 22 are connected to the upper surface of a control circuit substrate 52 while passing over the upper side of a controller 50 in the controller housing portion 5. On the rear surface of the insulator 19B, a sensor circuit substrate 23 having a rotation detection element not shown is screwed. A signal line 24 drawn from the lower end of the sensor circuit substrate 23 is also connected to the upper surface of the control circuit substrate 52 while passing over the upper side of the controller 50.

[0062] The rotor 16 has a rotating shaft 25, a rotor core 26 provided around the rotating shaft 25, and a plurality of permanent magnets 27, 27,... fixed to the rotor core 26. The rear end of the rotating shaft 25 is rotatably supported by a rear bearing holding portion 28 protruding from the inner surface of the pair of housings 2a, 2b via a bearing 29. The front end of the rotating shaft 25 is rotatably supported by a front bearing holding portion 30 protruding from the inner surface of the pair of housings 2a, 2b behind the front cover 11 via a bearing 31.

[0063] Between the stator 15 and the bearing 31, a fan 32 is fixed to the rotating shaft 25. The fan 32 is surrounded by an upper partition rib 33 and lower partition ribs 34A, 34B separated front and rear. The upper partition rib 33 is provided from the inner surface of the pair of housings 2a, 2b between the upper support rib 17 and the front bearing holding portion 30. The lower partition ribs 34A, 34B are also provided from the inner surface of the pair of housings 2a, 2b. The front lower partition rib 34A extends downward from the front bearing holding portion 30 and connects to the lower inner surface of the main housing 2, and then extends rearward. The rear lower partition rib 34B extends downward from the lower support rib 17 and then bends rearward. The lower partition rib 34B then bends downward and connects to the lower inner surface of the main housing 2 between the motor housing portion 4 and the controller housing portion 5. Thus, an exhaust passage 35 connected to the fan 32 is formed between the lower partition ribs 34A, 34B. A plurality of exhaust ports 36, 36,... are formed in the lower surface of the main housing 2 at the downstream end of the exhaust passage 35.

[0064] In the cylindrical portion 13 of the front cover 11, a main shaft 40 is supported by bearings 41, 41. The main shaft 40 is coaxially arranged in front of the rotating shaft 25 and is combined with the rotating shaft 25 by a joint 42. The front end of the main shaft 40 protrudes forward from the cylindrical portion 13.

[0065] The vibration rod 14 is assembled by screwing a fixing cap 45 provided at the rear end to the cylindrical portion 13. The vibration rod 14 has an outer flexible hose 46 and a flexible shaft 47 provided inside the flexible hose 46. An eccentric pendulum column not shown is connected to the top end of the flexible shaft 47. An end cap not shown is covered on the top end of the flexible hose 46. The rear end of the flexible shaft 47 is coaxially combined with the front end of the main shaft 40 via a joint sleeve 48.

[0066] The controller housing portion 5 is formed in an inclined posture extending downward from the motor housing portion 4. The controller 50 is housed in the controller housing portion 5. The controller 50 has a housing 51 and a control circuit substrate 52 housed in the housing 51. The housing 51 is a metal product of aluminum or the like having a high heat dissipation property with an upper surface open. The control circuit substrate 52 has a microcomputer, a plurality of switching elements and the like mounted on an upper surface. The housing 51 is held by a holding rib 53 provided to project from inner surfaces of the split housings 2a, 2b. A heat dissipation portion 54 composed of a plurality of projections and depressions is formed in a central portion of a lower surface of the housing 51. The holding rib 53 holds a peripheral edge of the housing 51 except for the heat dissipation portion 54. The controller 50 is held in a lateral posture with a front end higher than a rear end.

[0067] A plurality of air inlets 55, 55,... are formed in a lower surface of the main housing 2 below the controller 50. The air inlets 55 are located at positions further rearward than the lower partition rib 34B. A lower guide wall 56 is provided to project from inner surfaces of the split housings 2a, 2b above the air inlets 55, and extends upward from a lower wall portion 84 of the battery holding portion 7 toward the front side. A front end of the lower guide wall 56 is located further rearward than the lower partition rib 34B. An upper guide wall 57 is provided to project from inner surfaces of the split housings 2a, 2b above the lower guide wall 56, and extends downward toward the rear side from a rear surface of the lower partition rib 34B in parallel with the lower guide wall 56. A rear end of the upper guide wall 57 is located below the controller 50.

[0068] By the lower guide wall 56 and the upper guide wall 57, an air passage 58 in an inverted U shape is formed above the air inlets 55. That is, air sucked in from the air inlets 55 moves forward along the lower guide wall 57, and then directionally converted by the lower partition rib 34B and the upper guide wall 57. Then, the air moves rearward along the upper guide wall 57, and then flows toward the controller 50.

[0069] A display panel 59 is provided to an upper surface of the controller housing portion 5 above the controller 50. The display panel 59 is electrically connected to the control circuit substrate 52, and displays a remaining capacity of the battery pack 90.

[0070] The handle portion 6 has an upper handle 60 and a lower handle 61. The upper handle 60 extends in the front-rear direction, and a front end is coupled to the motor housing portion 4 from above. The lower handle 61 extends in the up-down direction, and an upper end is coupled to a rear end of the upper handle 60. A lower end of the lower handle 61 is coupled to the battery holding portion 7 from above. Thus, the handle portion 6 is connected in a ring shape with the motor housing portion 4, the controller housing portion 5 and the battery holding portion 7. Shoulder-belt retaining portions 62, 62 are provided to a front upper surface of the upper handle 60 and a lower rear surface of the lower handle 61.

[0071] A switch 65 is located on the upper portion of the lower handle 61. The switch 65 includes a plunger 66 that protrudes forward. A switch operating handle 67 is located in front of the plunger 66. The switch operating handle 67 is supported so that its lower end can rotate toward the lower handle 61, below the switch 65. The switch operating handle 67 is in an inverted L-shape, with an upper trigger portion 68 extending forward and backward and a lower trigger portion 69 extending vertically. A coil spring 70 is interposed between the plunger 66 and the switch operating handle 67. When the upper trigger portion 68 is pressed by a finger holding the upper handle 60, the switch operating handle 67 swings rearward and pushes the plunger 66. Furthermore, when the lower trigger portion 69 is pressed by a finger holding the lower handle 61, the switch operating handle 67 also swings rearward and pushes the plunger 66. A lock button 71 is located within the upper handle 60, above the switch 65. The lock button 71 normally blocks the switch operating handle 67 from being pushed in, but allows the switch operating handle 67 to be pushed in when the switch operating handle 67 is pushed in. A lock-release button 72 is provided in front of the lock button 71 within the upper handle 60. When the switch operating handle 67 is pushed in, the lock-release button 72 maintains the switch operating handle 67 in the depressed state.

[0072] like Figure 3 、 Figure 4 and Figure 5 As shown, the battery holding portion 7 is an inverted L-shape when viewed from the side and has an upper wall portion 75 and a front wall portion 76. The upper wall portion 75 is continuous with the controller housing portion 5 and the lower handle 61 and extends in the front-to-back direction and the left-to-right direction. The left-to-right width of the upper wall portion 75 is larger than the left-to-right width of the controller housing portion 5 and the lower handle 61. On the rear lower surface of the upper wall portion 75, a main body cover recess 77 that is recessed upward is formed in the center in the left-to-right direction. The front wall portion 76 extends downward from the front end of the upper wall portion 75 with the same left-to-right width. The lower surface of the controller housing portion 5 is continuous with the front surface of the front wall portion 76. The shorter transverse wall portions 78, 78 are integrally formed on the left and right sides of the front wall portion 76. A locking groove 79 is formed on the lower rear surface of the front wall portion 76 along the left-to-right direction.

[0073] Also like Figure 6 As shown, a pair of guide plates 80, 80 are provided on the left and right sides of the lower surface of the upper wall portion 75. The guide plates 80 are strip-shaped plates extending in the front-to-back direction slightly inward of the left and right side edges of the upper wall portion 75. Outer guide rails 81, 81 are provided on the outer surface of each guide plate 80. The outer guide rails 81, 81 extend in the front-to-back direction at predetermined intervals in the vertical direction. An inner guide rail 82 is formed on the inner surface of the lower end of each guide plate 80, extending in the front-to-back direction.

[0074] A terminal block 83 is held between the guide plates 80, 80. The terminal block 83 is held in a posture extending in the front-to-back direction by a lower wall portion 84, wherein the lower wall portion 84 is mounted between the upper inner surfaces of the left and right guide plates 80, 80. On the lower surface of the terminal block 83, a plurality of terminal plates 85, 85... protrude in the front-to-back direction. Behind the terminal block 83, a battery recess 86 that is recessed upward is formed on the lower surface of the lower wall portion 84. Of the wires 87A and 87B connected to the terminal block 83, the wire 87A is connected to the control circuit substrate 52. The wire 87B is connected to the switch 65. In addition, Figure 2 In the figure, each wiring is shown by a simple two-dot chain line to indicate the wiring path.

[0075] A battery pack 90 can be installed in the battery holder 7. The battery pack 90 includes a main housing 91 and a connecting portion 92. The main housing 91 houses a plurality of single cells (not shown). The connecting portion 92 is provided on the upper surface of the main housing 91 and is connectable to the battery holder 7. The connecting portion 92 has a width wide enough to fit between the left and right guide plates 80, 80. Fitting grooves 93, 93 are formed on the lower sides of the left and right side surfaces of the connecting portion 92. The fitting grooves 93, 93 are formed in a straight line from the front to the rear and can fit into the inner guide rails 82, 82 of the guide plates 80, 80. A plurality of slits 94, 94, ... are formed in the connecting portion 92. These slits 94, 94, ... allow the terminal strips 85 of the terminal block 83 to enter the installation position in the battery holder 7 from the front. At the location of each slit 94, a terminal metal fitting (not shown) electrically connected to the terminal strips 85 is provided within the connecting portion 92.

[0076] A hook button 95 is provided at the rear of the connecting portion 92. The hook button 95 has an upward-pointing hook portion 96 at its front end. A coil spring (not shown) within the main housing 91 biases the hook portion 96 upward, protruding from the connecting portion 92. Steps 97 are formed on both sides of the hook portion 96. These steps 97 abut the rear ends of the guide plates 80, 80 when the battery pack 90 is installed.

[0077] The battery pack 90 is pressed in from the rear of the battery holding portion 7 between the left and right guide plates 80, 80 toward the front with the connection portion 92 on the upper side. Thus, the inner rails 82, 82 of the guide plates 80, 80 are fitted into the fitting grooves 93, 93 of the connection portion 92. When the battery pack 90 is slid forward in this state, the terminal plates 85 of the terminal stage 83 enter the slits 94, and the guide plates 80 are stopped from sliding at the position where they abut against the step portion 97. In this state, the hook portions 96 are inserted into the rear end of the lower wall portion 84 and are caught in the battery recess 86. In this way, the installation of the battery pack 90 into the battery holding portion 7 is completed. In the case of removing the battery pack 90, the operating fork spring button 95 is pressed down. Thus, the catching of the hook portions 96 into the battery recess 86 is released, and therefore, the hook portions 96 can be slid rearward to be pulled out in this state.

[0078] The battery cover 8 has a front main cover 100 and a rear opening and closing cover 101 for opening and closing the rear of the main cover 100. The main cover 100 is assembled from the right side by fitting the left and right split covers 100a, 100b by using a plurality of screws 102, 102. The main cover 100 has an upper plate 103, left and right lateral plates 104, 104, a lower plate 105, and a front plate 106. The main cover 100 is a square tube shape extending in the front-rear direction. The rear of the upper plate 103 has a shape connected to the rear of the upper wall portion 75 of the battery holding portion 7 in a continuous manner. In the rear lower surface of the upper plate 103, a recess 107 for the opening and closing cover is formed in the center in the left-right direction.

[0079] The front of the upper plate 103 is a coinciding portion 108 which is one level lower than the rear and coincides with the lower side of the upper wall portion 75. A hook plate 109 is provided in the coinciding portion 108 which is sandwiched by the left and right split covers 100a, 100b. The hook plate 109 is an inverted L shape in side view, as shown in Figure 8 The hook plate 109 is provided with protrusions 110, 110 protruding to the left and right at the front end. The protrusions 110, 110 are inserted into hole portions 111, 111 provided on the facing surfaces of the split covers 100a, 100b. Thus, the hook plate 109 is supported swingably upward and downward about the protrusions 110, 110 at the rear end. As shown in Figure 5 and Figure 9 A main cover catching claw 112 is formed upward on the upper surface of the rear end of the hook plate 109. The rear of the hook plate 109 protrudes downward from the coinciding portion 108, and an operating piece 113 protruding rearward is formed at the lower end.

[0080] The lateral plates 104, 104 are connected to the rear of the lateral wall portions 78, 78 of the battery holding portion 7 in a continuous manner. However, the lateral plates 104, 104 are larger in the up-down dimension than the lateral wall portions 78, 78. On the upper inner surface of the lateral plates 104, 104, sliding rails 114, 114 are formed in the front-rear direction. The sliding rails 114, 114 can be fitted between the outer rails 81, 81 of the guide plates 80, 80 provided to the battery holding portion 7.

[0081] The front plate 106 is erected from the front end of the lower plate 105 in a short manner, and is connected to the lower side of the front wall portion 76 in a continuous manner. A latching piece 115 bent forward is formed on the upper end of the front plate 106. The latching piece 115 can be latched to the latching groove 79 of the front wall portion 76.

[0082] On the front side of the lower surface of the lower plate 105, a front leg portion 116 is provided protruding downward in the left-right direction. Behind the front leg portion 116, support protrusions 117, 117 having a threaded projection 117a on the left side are formed downward.

[0083] The opening and closing cover 101 has a rear plate 120, a rear upper plate 121, rear lateral plates 122, 122, and a rear lower plate 123. The rear upper plate 121 is connected to the rear of the upper plate 103 of the main body cover 100 in a continuous manner. As Figure 10 shown, on the front end of the rear upper plate 121, a cover-side latching claw 124 is formed upward in the center in the left-right direction. Behind the cover-side latching claw 124, a stopper 125 is provided standing in the left-right direction. Behind the stopper 125, an operation recess 126 is formed in the center in the left-right direction. The rear lateral plates 122, 122 are the same in length in the up-down direction as the lateral plates 104, 104 of the main body cover 100, and are connected to the rear of the lateral plates 104, 104 in a continuous manner.

[0084] The rear lower plate 123 is connected to the rear of the lower plate 105 of the main body cover 100 in a continuous manner. On the front end lower surface of the rear lower plate 123, a connecting portion 127 is formed in the center in the left-right direction. The connecting portion 127 is positioned between the support protrusions 117, 117 that extend rearward and are provided to the lower plate 105 of the main body cover 100. As Figure 7As shown, the connection portion 127 is penetrated by the threaded protrusion 117a of the support protrusion 117 on the left side. The support protrusions 117 and 117 are connected by a screw 128 from the right side. Therefore, the support protrusion 117 and the connection portion 127 are rotatably connected to each other around the screw 128. Behind the connection portion 127, on the lower surface of the rear lower plate 123, a rear leg portion 129 is provided to protrude downward. The rear leg portion 129 has the same left-right width and top-to-bottom length as the front leg portion 116. The front leg portion 116 and the rear leg portion 129 protrude downward than the support protrusion 117 and the connection portion 127. Therefore, the concrete vibrator 1 can be placed directly on a flat ground with the battery cover 8 facing downward.

[0085] The opening and closing cover 101 is rotatably connected to the main body cover 100 with the screw 128 as the axis. Figure 2 、 Figure 3 The closed position and the opening 100c are opened Figure 4 、 Figure 5 to the open position.

[0086] A pair of left and right ribs 130, 130 are provided on the inner surface of the opening and closing cover 101 to project from the rear plate 120 across the rear lower plate 123. The ribs 130, 130 are close to or in contact with the rear and lower surfaces of the battery pack 90 mounted on the battery holding portion 7.

[0087] The battery cover 8 is slid and installed from the rear of the battery holding portion 7. Before installing the battery pack 90, in the battery cover 8, the front plate 106 of the main cover 100 is facing forward, and the left and right slide rails 114, 114 are respectively fitted between the outer guide rails 81, 81 of the left and right guide plates 80, 80. Figure 1 As shown, the left and right horizontal plates 104, 104 abut against the horizontal wall portions 78, 78 of the battery holding portion 7. In this position, as shown Figure 3 As shown, the locking piece 115 of the front plate 106 is locked in the locking groove 79 of the front wall portion 76. At the same time, the main body side locking claw 112 of the hook plate 109 of the upper plate 103 is locked in the main body cover recess 77 of the battery holding portion 7. In this way, the battery cover 8 is attached to the battery holding portion 7.

[0088] To remove the battery cover 8, first open the access cover 101 from the closed position. At this point, if the operation recess 126 of the rear upper plate 121 is pushed downward, the cover-side locking claws 124 will drop downward from the access cover recess 107. In this state, rotating the rear upper plate 121 to push it backward will rotate the access cover 101 to the open position.

[0089] Next, the operation piece 113 of the hook plate 109 protruding into the opening 100c of the main body cover 100 is pushed down. Then, the main body side locking claw 112 is released from the main body cover recess 77 downward, so that the release is released. Therefore, if the main body cover 100 is slid rearward in this state, the battery cover 8 can be detached from the battery holding portion 7.

[0090] In the case of installing the battery pack 90, if the shutter 101 is located at the open position, as shown by a two-dot chain line, the battery pack 90 is inserted from the opening 100c of the main body cover 100, and as shown by a two-dot chain line, the battery pack 90 can be slidably installed in the battery holding portion 7. If the shutter 101 is rotated to the closed position after the battery pack 90 is installed, as shown by a one-dot chain line, the battery pack 90 is entirely covered by the battery cover 8. Figure 11 Figure 2 Figure 3

[0091] In the case of detaching the battery pack 90, if only the shutter 101 is rotated to the open position, the rear portion of the battery pack 90 is exposed, and therefore, if the hook portion 96 is released from the battery recess 86 by pressing the operation fork spring button 95, the battery pack 90 can be directly pulled rearward.

[0092] Thus, the battery pack 90 can be attached and detached without detaching the battery cover 8 from the battery holding portion 7. Since the opening 100c of the main body cover 100 is located on the trajectory in the direction of attachment and detachment of the battery pack 90, if the shutter 101 is located at the open position, the battery pack 90 can be attached and detached without interfering with the battery cover 8.

[0093] When the concrete vibrator 1 configured as described above is used for pouring of concrete, the vibration rod 14 is installed and inserted into the concrete in a formwork. In this state, the upper trigger portion 68 or the lower trigger portion 69 of the operation switch handle 67 is pressed. Then, the switch 65 performs an on operation, and the power supply of the battery pack 90 is supplied from the controller 50 to the motor 10 to rotate the rotor 16. That is, the microcomputer of the control circuit substrate 52 acquires the rotational position of the rotor 16 based on the detection signal obtained from the sensor circuit substrate 23, and causes the three-phase current to flow to each coil 20 in turn by causing the switching element to perform a switching operation, thereby rotating the rotor 16. Therefore, the rotational shaft 25 is rotated, and the flexible shaft 47 of the vibration rod 14 is rotated through the main shaft 40 integrated with the rotational shaft 25. Therefore, the eccentric pendulum column is rotated to generate vibration, and the concrete is caused to flow to the entire formwork.

[0094] When the fan 32 is rotated in conjunction with the rotation of the rotational shaft 25, as shown in Figure 2 ​​​As indicated by the dashed arrow, air is drawn in through the air inlet 55 of the controller housing 5. This air flows toward the controller 50 through the U-shaped air inlet passage 58. As a result, it contacts the heat dissipation portion 54 of the housing 51, promoting heat dissipation from the controller 50. The air then passes between the support ribs 17, 17, and cools the motor 10. The air that has cooled the motor 10 flows radially outward from the fan 32, passes through the exhaust passage 35, and is discharged to the outside through the exhaust port 36.

[0095] The battery cover 8 is detachably mounted on the battery holding portion 7. Therefore, if the battery cover 8 is damaged, Figure 4 、 Figure 5 As shown, the battery cover 8 can be removed to repair or replace it.

[0096] Furthermore, a battery pack larger than the battery pack 90 can also be mounted on the battery holding portion 7. Therefore, instead of the battery cover 8, a battery cover of a size suitable for a larger battery pack can be attached to and detached from the battery holding portion 7.

[0097] Figure 12 This shows a larger battery cover 8A and battery pack 90A. Battery cover 8A has a main body cover 100A that is larger in vertical dimensions than main body cover 100 of battery cover 8, and an opening / closing cover 101A that is larger in vertical dimensions and front-to-back dimensions than opening / closing cover 101. The rest of the structure is the same as battery cover 8. However, the left-right dimensions of battery cover 8A can be larger than those of battery cover 8.

[0098] The battery pack 90A has a main body casing 91A having a larger vertical dimension than the battery pack 90. ​​The other structures are the same as those of the battery pack 90.

[0099] Therefore, the battery cover 8A and the battery pack 90A are attachable to and detachable from the battery holding portion 7 in the same manner as the battery cover 8 and the battery pack 90 .

[0100] When using a larger battery pack 90A, the battery cover 8 is removed from the battery holding portion 7. Then, if the main body cover 100A of the battery cover 8A is mounted on the battery holding portion 7, as shown in FIG. Figure 13 As shown, when the opening and closing cover 101A is in the open position, the battery pack 90A can be removed and installed in the same steps as the battery pack 90. Figure 14 As shown, the battery pack 90A is entirely covered by the battery cover 8A.

[0101] The user can purchase a set of the concrete vibrator 1, the battery cover 8, and the battery pack 90. ​​Therefore, if the battery cover 8 is damaged, the user can repair the battery cover 8 or purchase a new one.

[0102] Also, in a case where a work requiring a longer time than the battery pack 90, if a battery cover 8A of a larger size and a battery pack 90A are additionally purchased, the concrete vibrator 1 can be directly used separately.

[0103] The concrete vibrator 1 of the above-described mode includes a motor 10 and a motor housing portion 4 (motor housing) for housing the motor 10. Also, the concrete vibrator 1 includes a battery holding portion 7 connected to the motor housing portion 4 and capable of detachably holding a battery pack 90, 90A (battery), and a battery cover 8, 8A covering the battery pack 90, 90A held in the battery holding portion 7 in its entirety. Also, the battery cover 8, 8A is provided to the battery holding portion 7 in a detachable manner.

[0104] According to this structure, the battery packs 90, 90A of different sizes can also be used.

[0105] Also, since the battery cover 8, 8A that matches the battery pack 90, 90A can be selected, even if the battery pack 90A of a larger size is used, the overall compactness can be maintained.

[0106] Also, even if the battery cover 8, 8A is damaged, the replacement and the like can be easily performed.

[0107] In the battery holding portion 7, two types of the battery pack 90 (first battery) and the battery pack 90A (second battery) larger than the battery pack 90 can be selectively detached, and two types of the battery cover 8 (first battery cover) covering the battery pack 90 and the battery cover 8A (second battery cover) covering the battery pack 90A in the battery cover 8, 8A can be selectively detached with respect to the battery holding portion 7.

[0108] Therefore, the battery cover 8, 8A can be used separately in matching with the two types of battery packs 90, 90A.

[0109] The battery pack 90, 90A can be detached by sliding with respect to the battery holding portion 7 in the front-rear direction (predetermined straight line direction). Therefore, even if the battery cover 8, 8A is used, the battery pack 90, 90A can be easily detached.

[0110] The battery cover 8, 8A can be detached with respect to the battery holding portion 7 by sliding with respect to the battery holding portion 7 in the same straight line direction as the battery pack 90, 90A. Therefore, the battery cover 8, 8A and the battery pack 90, 90A can be detached without interfering with each other.

[0111] An outer rail 81 is provided in the battery holding portion 7, and a slide rail 114 is provided in the battery cover 8, 8A. The outer rail 81 and the slide rail 114 (rails) extend in a straight line and engage with each other. Therefore, the battery cover 8, 8A can be easily attached and detached.

[0112] A hook plate 109 (engagement portion) is provided in the battery cover 8, 8A, and a main body cover recess 77 (engaged portion) is provided in the battery holding portion 7. The main body cover recess 77 engages with the hook plate 109 at the attachment position of the battery cover 8, 8A. Therefore, the battery cover 8, 8A is prevented from being detached at the attachment position.

[0113] Since the engagement portion is the hook plate 109 (hook), the engagement and detachment can be easily performed.

[0114] An opening 100c, through which the battery pack 90, 90A can be attached and detached while being attached to the battery holding portion 7, and an opening and closing cover 101, 101A (cover) that opens and closes the opening 100c are provided in the battery cover 8, 8A. Therefore, the battery pack 90, 90A can be attached and detached while being attached to the battery holding portion 7.

[0115] The opening 100c is formed on a trajectory in the attachment and detachment direction of the battery pack 90, 90A to the battery holding portion 7. Therefore, the battery pack 90, 90A can be attached and detached by opening the opening and closing cover 101, 101A.

[0116] Next, a modification will be described.

[0117] The size difference between the battery and the battery cover is not limited to two types. Three or more types of batteries and battery covers having different sizes can be separately used.

[0118] In the above-described mode, the engagement portion is provided in the battery cover, and the engaged portion is provided in the battery holding portion, but the engagement portion can be provided in the battery holding portion, and the engaged portion can be provided in the battery cover.

[0119] The cover can be rotatable about an axis provided on the lower end side as in the above-described mode, or can be rotatable about an axis provided on the upper end, the left end, or the right end. The axis can be a concave-convex fitting portion other than a screw.

[0120] The cover can be a structure that is opened and closed by sliding, in addition to a structure that is opened and closed by rotating. A battery cover that does not have a cover (no opening and closing portion) can also be used.

[0121] The battery is not limited to the structure that is slidably attached to the battery holding portion from the rear. It can also be slidably attached to the battery holding portion from the front, and can also be slidably attached to the battery holding portion from either of the left and right sides. It can also be attached by being inserted from the bottom.

[0122] The direction in which the battery cover is slidably attached can also be changed. A structure other than the sliding attachment (for example, attachment based on the locking of a locking portion and a locked portion) can also be used.

[0123] The position of the battery holding portion is not limited to the lower portion of the housing. It can also be the rear portion, the upper portion, and the side portion of the housing.

[0124] The electric power tool is not limited to the concrete vibrator. If it is a rechargeable type, the mixer, the vacuum pump, the work light, the cleaner, and the like are also objects. In addition to these, the present application can also be applied to the caulking gun, the tucker, the driver drill, the electric hair clipper, the lawn mower, and the like.

[0125] [2nd Mode]

[0126] As the 2nd mode of the present application, Figure 15 An example in which the present application is applied to a mixer for stirring paint and the like is shown. The mixer 140 has an upper motor housing 141 and a lower reduction portion housing 142. The motor housing 141 houses a motor and a controller, which are not shown. A handle 143 is attached to the motor housing 141, and the handle 143 has a pair of grip portions 144 on the left and right. The reduction portion housing 142 houses a reduction portion, which is not shown. The reduction portion has a main shaft 145 that is an output shaft. The main shaft 145 protrudes downward from the reduction portion housing 142. A stirring shaft 146 is coaxially connected to the main shaft 145. A blade, which is not shown, is attached to the lower end of the stirring shaft 146.

[0127] In the mixer 140, the battery holding portion 7 is provided upward in the upper portion of the motor housing 141. The battery pack 90 can be slidably attached to the battery holding portion 7 from the front in a state in which the connecting portion 92 faces downward. Also, the main cover 100 of the battery cover 8 can be slidably attached to the battery holding portion 7 from the front in a state in which the orientation of the main cover 100 is opposite to that in the above-described mode. Therefore, if the opening and closing cover 101 is rotated to the open position upward, the battery pack 90 can be attached and detached through the opening 100c in a state in which the main cover 100 is attached. If the opening and closing cover 101 is positioned at the closed position, the battery pack 90 is covered by the battery cover 8 as a whole.

[0128] On the other hand, when using a larger battery pack 90A, the battery cover 8 is removed from the battery holding portion 7. Next, the main body cover 100A of the battery cover 8A is slid from the front and mounted on the battery holding portion 7 in an upside-down direction. Figure 16 As shown, when the opening and closing cover 101A is in the open position, the battery pack 90A can be installed and removed through the opening 100c. When the opening and closing cover 101A is in the closed position after the battery pack 90A is installed, the battery pack 90A is entirely covered by the battery cover 8A.

[0129] In addition, in the blender, the sliding installation direction of the battery cover and the battery pack can also be from the rear, either side or above. Of course, the sizes of the battery cover and the battery pack are not limited to two.

[0130] Furthermore, in the first and second embodiments described above, the installation procedure involves attaching the battery cover 8, 8A to the main body housing 2 and then attaching the battery pack 90, 90A to the battery retaining portion 7. This is because the main body cover 100, 100A of the battery cover 8, 8A is provided with a front plate 106, which interferes with the battery pack 90, 90A in the direction of removal of the battery cover 8, 8A. In other words, this prevents the battery pack 90, 90A from falling out of the battery cover 8, 8A.

[0131] Furthermore, by providing the main body covers 100 and 100A with the front plate 106, the front wall portion 76 of the battery holding portion 7 provided in the main body case 2 can be shortened, thereby contributing to a more compact battery holding portion 7 and, consequently, the main body case 2. Alternatively, the main body covers 100 and 100A may be provided without the front plate 106, leaving their entire front surfaces open and forming the front wall portion 76 of the battery holding portion 7 longer to close the front opening of the main body covers 100 and 100A. However, in this case, the protruding length of the front wall portion 76 will be increased, resulting in an increase in the size of the battery holding portion 7 and, consequently, the main body case 2.

[0132] [Third Method]

[0133] Figure 17 It is an enlarged perspective view of an example in which a battery cover is fixed to a battery holding portion of a concrete vibrator according to a third embodiment by screws. Figure 18 yes Figure 17 Central longitudinal section view. Figure 19 This is a perspective view of the battery holding portion, battery cover, and battery pack as viewed from the rear. Figure 20 This is a perspective view of the battery holding portion, battery cover, and battery pack as viewed from the front. Figure 21 It is an explanatory diagram showing a state where a battery pack is attached to and detached from a battery holding portion according to a third embodiment.

[0134] The battery holding portion 307 of the third mode is configured similarly to the first mode except for the battery holding portion and the battery cover. The same reference numerals are appropriately assigned to the components and parts of the third mode that are configured similarly to the first mode, and the description thereof is omitted.

[0135] The battery holding portion 307 of the third mode has the upper wall portion 75, the front wall portion 376, and the lateral wall portions 78, 78, and the guide plates 80, 80, the outer rails 81, 81, and the inner rail 82. The recess 77 for the main body cover and the locking groove 79 are not formed in the battery holding portion 307.

[0136] The front wall portion 376 is configured similarly to the front wall portion 76 of the first mode except for the threaded protrusion receiving portion 377. The threaded protrusion receiving portion 377 is bulged forward with respect to the other portions of the front wall portion 376. The battery holding portion-side protrusions 377a are provided on the left and right of the threaded protrusion receiving portion 377. Each of the battery holding portion-side protrusions 377a has a threaded hole 377b in the left-right direction. Further, the threaded protrusion receiving portion 377 can not be bulged forward.

[0137] In addition, the battery holding portion 307 has the terminal platform 83 and the recess 86 for the battery.

[0138] The battery pack 90 is detachably attached to the battery holding portion 307 similarly to the first mode.

[0139] The battery cover 308 of the third mode has the main body cover 300 on the front side and the opening and closing cover 301 for opening and closing the rear portion of the main body cover 300 on the rear side. The main body cover 300 is a one-piece structure having the upper plate 303, the lateral plates 304, 304 on the left and right, the lower plate 305, and the front plate 306. The main body cover 300 is a lid box shape extending in the front-rear direction, having an opening in the rear portion, and being open upward. The rear portion of the upper plate 303 has a shape connected to the rear of the upper wall portion 75 of the battery holding portion 7 in a continuous manner. Further, the upper plate 303 does not have the recess 107 for the opening and closing cover.

[0140] The front portion of the upper plate 303 is a coinciding portion 303a that is one level lower than the rear portion and coincides with the lower portion of the upper wall portion 75. Further, the hook plate 109 is not provided on the coinciding portion 303a.

[0141] The lateral plates 304, 304 are connected to the rear of the lateral wall portions 78, 78 of the battery holding portion 7 in a continuous manner. However, the up-and-down dimension of the lateral plates 304, 304 is larger than that of the lateral wall portions 78, 78. On the upper inner surface of the lateral plates 304, 304, slide rails 314, 314 are formed in the front-and-rear direction. The slide rails 314, 314 can be fitted between the outer rails 81, 81 provided to the guide plates 80, 80 of the battery holding portion 307. On the rear end portions of the lateral plates 304, 304, cover side locking portions 309, 309 are provided. Each of the cover side locking portions 309, 309 protrudes to the left-and-right direction outer side with respect to the surrounding portion.

[0142] The front plate 306 stands up from the front end of the lower plate 305. The upper portion of the front plate 306 further descends to the rear with respect to the lower portion, and becomes a front coinciding portion 306a which coincides with the rear of the front wall portion 376. The lower portion of the front plate 306 is connected to the lower side of the front wall portion 376 in a continuous manner. In the central portion of the front coinciding portion 306a, a screw protrusion portion 315 which protrudes to the front with respect to the surrounding portion is formed. The screw protrusion portion 315 has screw holes 315a in the left-and-right direction. The screw protrusion portion 315 can enter between the battery holding portion side protrusions 377a of each of the battery holding portions in the screw protrusion receiving portion 377. When this entry occurs, the left screw hole 377b, the screw hole 315a, and the right screw hole 377b are arranged in a straight line in the left-and-right direction. Further, in the third mode, the locking piece 115 is not formed in the front plate 306, but both the locking piece 115 and the locking groove 79 can be formed, and the locking and screw fixing of the battery holding portion 397 and the battery cover 308 can be simultaneously achieved by the locking piece 115 and the locking groove 79. Similarly, the locking and screw fixing can be simultaneously achieved by the body side locking claw 112 and the body cover recess 77.

[0143] On the rear end portion of the lower plate 305, a support protrusion 317 is formed downward. The support protrusion 317 extends left and right. The support protrusion 317 has holes 317a in the left-and-right direction. On the inner surface of the body cover 300, in the range from the rear surface lower portion of the front plate 306 to the upper surface of the lower plate 305, three ribs 305a, 305a, 305a which are arranged left and right are provided protruding to the rear or upward. Each of the ribs 305a extends in the front-and-rear direction, and approaches or abuts against the front surface or the lower surface of the battery pack 90 which is mounted to the battery holding portion 307. Further, the front leg portion 116 is not provided to the lower plate 305.

[0144] The open-and-close cover 301 has a rear plate 320, a rear upper plate 321, rear lateral plates 322, 322, and a rear lower plate 323. Further, the directions of the open-and-close cover 301 are the directions in the closed state of the open-and-close cover 301 except for the cases where they are specifically described.

[0145] The rear upper plate 321 is continuously connected to the rear of the upper plate 303 of the main body cover 300 .

[0146] The rear transverse plates 322, 322 have the same vertical length as the transverse plates 304, 304 of the main cover 300 and are continuously connected to the rear of the transverse plates 304, 304. Cover-side latching claws 324, 324 are formed forward at the front upper ends of the rear transverse plates 322, 322. Behind each cover-side latching claw 324, a stopper 325 is erected outward in the left-right direction, extending vertically. An operating recess 326 is formed behind each stopper 325. Alternatively, the cover-side latching claws may be formed on the main cover 300 side, while the cover-side latched portion may be formed on the opening and closing cover 301 side.

[0147] The rear lower plate 323 is continuously connected to the rear of the lower plate 305 of the main body cover 300. Connecting portions 327, 327 are formed on the lower front surface of the rear lower plate 323. The connecting portions 327, 327 are arranged on the left and right sides. Each connecting portion 327 has a hole 327a extending in the left and right directions. A support protrusion 317 is arranged between the connecting portions 327, 327. This support protrusion 317 is provided on the lower plate 305 of the main body cover 300. A shaft member 328 is provided, which is shared by the hole 317a of the support protrusion 317 and the holes 327a, 327a of the connecting portions 327, 327. Therefore, the support protrusion 317 and the connecting portions 327, 327 are rotatably connected to each other about the shaft member 328. Furthermore, the rear lower plate 323 does not have a rear leg portion 129.

[0148] The opening and closing cover 301 is rotatably connected to the main body cover 300 about the shaft member 328. That is, the opening 300c at the rear end of the main body cover 300 can be closed. Figure 17 、 Figure 18 The closed position and the opening 300c are opened Figure 19 、 Figure 20 to the open position.

[0149] When the opening and closing cover 301 is closed, each cover-side locking claw 324 is locked to the corresponding cover-side locked portion 309 of the main body cover 300. Therefore, this locking maintains the opening and closing cover 301 closed relative to the main body cover 300. When the opening and closing cover 301 is closed, the stoppers 325, 325 are in contact with or adjacent to the cover-side locked portions 309, 309. Furthermore, by pushing each operating recess 326 inward in the left-right direction with a finger, the locking of the cover-side locking claws 324, 324 against the cover-side locked portions 309, 309 can be released. In this state, the opening and closing cover 301 can be tilted backward to open the opening and closing cover 301 relative to the main body cover 300.

[0150] On the inner surface of the shutter 301, a pair of ribs 330, 330 are provided protruding from the rear plate 320 across the lower rear plate 323. The left rib 330 is connected in a continuous manner to the left rib 305a in the lower plate 305 of the main body cover 300 in the closed state of the shutter 301. The right rib 330 is connected in a continuous manner to the right rib 305a in the lower plate 305 of the main body cover 300 in the closed state of the shutter 301. The ribs 330, 330 approach or abut the rear surface and the lower surface of the battery pack 90 mounted in the battery holding portion 307.

[0151] After the battery cover 308 is slid from the rear of the battery holding portion 307, the battery cover 308 is fixed by the screw 331, whereby the battery cover 308 is held to the battery holding portion 307. Before the battery pack 90 is mounted, in the battery cover 308, the front plate 306 of the main body cover 300 is directed forward, and the left and right slide rails 314, 314 are respectively fitted between the outer rails 81, 81 of the left and right guide plates 80, 80. Also, when the battery cover 308 is slid forward, as shown in FIG. 6, the left and right cross plates 304, 304 abut the cross wall portions 78, 78 of the battery holding portion 307. In this position, as shown in FIG. 7, the threaded projection portion 315 of the front plate 306 enters the threaded projection receiving portion 377 of the front wall portion 376. Also, the screw 331 is inserted from the right outer side of the right battery holding portion side projection 377a in a state where the threaded hole 315a of the threaded projection portion 315 and the threaded holes 377b, 377b of the battery holding portion side projections 377a of the threaded projection receiving portion 377 are common, whereby the battery cover 308 is mounted to the battery holding portion 307. Figure 17 Figure 18 When the battery cover 308 is removed, the screw 331 is removed and the main body cover 300 is slid rearward.

[0152] When the battery cover 308 is removed, the screw 331 is removed and the main body cover 300 is slid rearward.

[0153] In the case of mounting the battery pack 90, if the shutter 301 is positioned at the open position, as shown in FIG. 8, the battery pack 90 is inserted from the opening 300c of the main body cover 300, and as shown by the double-dot chain line, the battery pack 90 can be slidably mounted to the battery holding portion 307. If the shutter 301 is rotated to the closed position after the battery pack 90 is mounted, as shown in FIG. 9, the battery pack 90 is entirely covered by the battery cover 308. Figure 21 Figure 17 Figure 18

[0154] Also in the case of removing the battery pack 90, if only the shutter 301 is rotated to the open position, the rear portion of the battery pack 90 is exposed, and therefore, if the hook portion 96 is removed from the battery recess 86 by pressing the operation fork spring button 95, the battery pack 90 can be directly pulled rearward.

[0155] ​​​​In this manner, the battery pack 90 can be installed and removed without removing the battery cover 308 from the battery retaining portion 307. Since the opening 300c of the main body cover 300 is located on a trajectory in the direction of installation and removal of the battery pack 90, when the access cover 301 is in the open position, the battery pack 90 can be installed and removed without interfering with the battery cover 308.

[0156] In addition, in the battery holding portion 307 of the third embodiment, two or more types of batteries and battery covers can be selectively attached and detached, similarly to the first embodiment.

[0157] Furthermore, in the third embodiment of the battery retaining portion 307, the battery pack 90 is mounted after the battery cover 308 is mounted, thereby preventing the battery pack 90 from falling off the battery cover 308. Furthermore, in the third embodiment of the battery cover 308, the front plate 306 is also provided on the main body cover 300. This allows the front wall portion 376 provided on the battery retaining portion 307 to be shortened, thereby contributing to a more compact battery retaining portion 307 and, therefore, the main body housing 2.

[0158] In the concrete vibrator of the third embodiment, the battery cover 308 is fixed to the battery holding portion 307 by screws 331 .

[0159] Therefore, by attaching and detaching the screw 331 with a screwdriver, the battery cover 308 can be easily attached and detached from the battery holding portion 307. In addition, the battery cover 308 can be more securely attached than when the battery cover 308 is locked at one location by the locking portion and the locked portion.

[0160] The concrete vibrator of the third embodiment appropriately includes the same modifications as those of the first and second embodiments.

[0161] In addition, the screw boss receiving portion 377 may have one or three or more battery holding portion side bosses. A plurality of screw boss portions 315 may be provided.

[0162] The threaded protrusion 315 may replace the front wall portion 376 or be provided on the lateral wall portion 78 together with the front wall portion 376 , and the threaded protrusion receiving portion 377 may be provided correspondingly thereto.

[0163] [Form 4]

[0164] Figure 22 This is an enlarged perspective view of an example different from the third embodiment in which a battery cover is fixed to a battery holding portion of a concrete vibrator according to a fourth embodiment by screws. Figure 23 yes Figure 22 Central longitudinal section view. Figure 24 This is a perspective view of the battery holding portion, battery cover, and battery pack as viewed from the rear. Figure 25is a perspective view of the battery holding portion, the battery cover, and the battery pack viewed from the front. Figure 26 is an explanatory view showing the state of disassembling the battery pack with respect to the battery holding portion of the 4th mode.

[0165] The 4th mode is configured in the same manner as the 3rd mode except for the structure of each screw fixing portion in the battery holding portion and the battery cover. The same reference numerals are appropriately assigned to the components and parts configured in the same manner as the 3rd mode in the 4th mode, and the description thereof is omitted.

[0166] A first threaded hole 477 is provided in the central portion of the front wall portion 476 in the battery holding portion 407 of the 4th mode. The first threaded hole 477 is provided from the rear surface of the front wall portion 476 toward the front. That is, the first threaded hole 477 is provided inside the battery holding portion 407 (the main body case 2). A first nut 477a is inserted in the first threaded hole 477.

[0167] Further, a second threaded hole 478 is provided in the rear end portion of the upper wall portion 475 in the battery holding portion 407. The second threaded hole 478 is provided from the rear end portion rear surface of the upper wall portion 475 toward the front. That is, the second threaded hole 478 is provided inside the battery holding portion 407 (the main body case 2). A second nut 478a is inserted in the second threaded hole 478.

[0168] The battery cover 408 of the 4th mode has the main body cover 400 of the front side and the opening and closing cover 301 of the rear side for opening and closing the rear portion of the main body cover 400.

[0169] A first cover side threaded hole portion 415 is provided in the central portion of the front coincident portion 406a of the front plate 406 in the main body cover 400. The first cover side threaded hole portion 415 is cylindrical and protrudes forward and backward with respect to the peripheral portion thereof. The first cover side threaded hole portion 415 can overlap the first threaded hole 477 in the battery holding portion 407 from the rear.

[0170] Further, the upper plate 403 in the main body cover 400 extends up and down and left and right, and is connected to the horizontal plates 304, 304 at the left lower portion and the right lower portion. The upper plate 403 has a coincident portion 403a. Further, in the central portion of the upper plate 403, the second cover side threaded hole portion 416 is provided with the coincident portion 403a. The second cover side threaded hole portion 416 is cylindrical and protrudes forward in the same manner as the coincident portion 403a. The second cover side threaded hole portion 416 can overlap the second threaded hole 478 in the battery holding portion 407 from the rear.

[0171] After the battery cover 408 is slid from the rear of the battery holding portion 407, the battery cover 408 is fixed with the first screw 431 and the second screw 432, thereby holding the battery cover 408 in the battery holding portion 407. Before installing the battery pack 90, in the battery cover 408, the front plate 406 of the main cover 400 is facing forward, and the left and right slide rails 314, 314 are respectively fitted between the outer guide rails 81, 81 of the left and right guide plates 80, 80. And, when the battery cover 408 is slid forward, as shown in FIG. Figure 22 As shown, the left and right horizontal plates 304, 304 abut against the horizontal wall portions 78, 78 of the battery holding portion 407. In this position, as shown Figure 23 As shown, the first cover-side threaded hole 415 of the front plate 406 is located behind the first threaded hole 477 of the front wall 476. Furthermore, the second cover-side threaded hole 416 of the upper plate 403 is located behind the second threaded hole 478 of the upper wall 475. Furthermore, the first screw 431 is inserted from the rear, i.e., inside the battery cover 408, so that it can be used in both the first cover-side threaded hole 415 and the first threaded hole 477 when the access cover 301 is open. The first screw 431 is secured with a first nut 477a. Furthermore, the second screw 432 is inserted from the rear, i.e., inside the battery cover 408, so that it can be used in both the second cover-side threaded hole 416 and the second threaded hole 478 when the access cover 301 is open. The second screw 432 is secured with a second nut 478a. In this manner, the battery cover 408 is attached to the battery retaining portion 407. The first screw 431 and the second screw 432 are both arranged inside the battery holding portion 407 and the battery cover 408 .

[0172] When removing the battery cover 408 , the first screw 431 and the second screw 432 are removed while the opening and closing cover 301 is open, and the main body cover 400 is slid rearward.

[0173] When the battery pack 90 is installed, if the opening and closing cover 301 is in the open position, Figure 26 As shown, the battery pack 90 is inserted from the opening 400c of the main body cover 400, and as shown by the double-dashed line, the battery pack 90 can be slidably mounted on the battery holding portion 407. If the opening and closing cover 301 is rotated to the closed position after the battery pack 90 is mounted, as shown in FIG. Figure 22 、 Figure 23 As shown, the battery pack 90 is entirely covered by a battery cover 408 .

[0174] The same applies to the removal of the battery pack 90. ​​If the opening and closing cover 301 is simply rotated to the open position, the rear of the battery pack 90 is exposed. Therefore, if the hook spring button 95 is pressed to cause the hook portion 96 to fall off from the battery recess 86, the battery pack 90 can be directly pulled out to the rear.

[0175] Thus, the battery pack 90 can be attached and detached without detaching the battery cover 408 from the battery holding portion 407. Since the opening 400c of the main body cover 400 is located on a trajectory in the direction in which the battery pack 90 is attached and detached, the battery pack 90 can be attached and detached without interfering with the battery cover 408 if the opening and closing cover 301 is located at the open position.

[0176] In addition, in the battery holding portion 407 of the fourth mode, two or more types of batteries and battery covers can be selectively attached and detached as in the third mode.

[0177] In addition, in the battery holding portion 407 of the fourth mode, the mounting step is also a step of mounting the battery pack 90 after the battery cover 408 is mounted, which has the effect of preventing the battery pack 90 from falling off the battery cover 408. In addition, in the battery cover 408 of the fourth mode, the front plate 406 is provided to the main body cover 400, whereby the front wall portion 476 provided to the battery holding portion 407 can be shortened, thereby contributing to the compactness of the battery holding portion 407 and the main body case 2.

[0178] In the concrete vibrator of the fourth mode, the battery cover 408 is fixed to the battery holding portion 407 by the first screw 431 and the second screw 432.

[0179] Thus, the battery cover 408 is easily attached and detached with respect to the battery holding portion 407 by detaching and attaching the first screw 431 and the second screw 432 with a screwdriver. In addition, the battery cover 408 can be more firmly mounted than in the case where the locking is achieved by the locking portion and the locked portion at two positions and in the case where the threaded fixing is achieved at one position.

[0180] In addition, the first screw 431 and the second screw 432 are disposed entirely inside the battery cover 408 and inside the battery holding portion 407. Thus, the occurrence of the battery cover 408 and the battery holding portion 407 being covered with concrete or the like can be suppressed. Thus, even if the battery cover 408 and the battery holding portion 407 are attached with concrete or the like, the first screw 431 and the second screw 432 can be detached to detach the battery cover 408.

[0181] In addition, the first screw 431 and the second screw 432 are provided in plurality. Thus, the battery cover 408 can be attached and detached while the mounting strength of the battery cover 408 with respect to the battery holding portion 407 is further improved.

[0182] The concrete vibrator of the fourth mode appropriately has the same modifications as the first, second, and third modes.

[0183] In addition, screws and screw fixing portions may be provided at three or more locations. The fastening of screws is not limited to the structure based on nuts, and for example, a thread groove may be provided on the first threaded hole 477 .

Claims

1. An electric working equipment, characterized in that: It includes a motor, a motor housing, a battery holding portion and a battery cover, wherein: The motor housing is used to accommodate the motor; The battery holding portion is connected to the motor housing and is capable of removing and installing the battery; The battery cover completely covers the battery held in the battery holding portion. The battery cover is detachably mounted on the battery holding portion. At least two types of batteries, namely, a first battery and a second battery larger than the first battery, can be selectively installed and removed in the battery holding portion. At least two types of the battery cover, a first battery cover covering the first battery and a second battery cover covering the second battery, can be selectively attached to and detached from the battery holding portion. The battery can be attached and detached by sliding in a predetermined linear direction relative to the battery holding portion.

2. The electric working equipment according to claim 1, characterized in that: The battery cover is attachable to and detachable from the battery holding portion by sliding relative to the battery holding portion in the same linear direction as the battery.

3. The electric working equipment according to claim 1 or 2, characterized in that: The battery holding portion and the battery cover are respectively provided with guide rails extending along the straight direction and engaging with each other.

4. The electric working equipment according to claim 1 or 2, characterized in that: A locking portion is provided on one of the battery cover and the battery holding portion, and a locked portion is provided on the other of the battery cover and is locked with the locking portion at a mounting position of the battery cover.

5. The electric working equipment according to claim 4, characterized in that: The locking portion is a hook.

6. The electric working equipment according to claim 1 or 2, characterized in that: The battery cover is fixed to the battery holding portion by screws.

7. The electric working equipment according to claim 6, characterized in that: The entire screw is disposed inside the battery cover and inside the battery holding portion.

8. The electric working equipment according to claim 6, characterized in that: A plurality of screws are provided.

9. The electric working equipment according to claim 7, characterized in that: A plurality of screws are provided.

10. The electric working equipment according to claim 1 or 2, characterized in that: The battery cover is provided with an opening and a cover, wherein the opening enables the battery to be attached and detached when the battery is mounted on the battery holding portion, and the cover enables the opening to be opened and closed.

11. The electric working equipment according to claim 10, characterized in that: The opening is formed on a trajectory in a direction in which the battery is attached to and detached from the battery holding portion.

12. The electric working equipment according to claim 1 or 2, characterized in that: The battery cover and the battery can be installed in the battery holding portion in sequence. When the battery is installed first, the battery cover cannot be installed.

13. An electric working equipment, characterized in that: It has a motor, a motor housing and a battery holding portion, wherein: The motor housing is used to accommodate the motor; The battery holding portion is connected to the motor housing and can be detached from the battery. At least two types of batteries, namely, a first battery and a second battery larger than the first battery, can be selectively installed and removed in the battery holding portion. At least two types of battery covers, a first battery cover that entirely covers the first battery and a second battery cover that entirely covers the second battery, can be selectively attached and detached to the battery holding portion.

14. The electric working equipment according to claim 13, characterized in that: A locking portion is provided on one of each of the battery covers and the battery holding portion, and a locked portion is provided on the other of the battery covers. The locked portion is locked with the locking portion at a mounting position of each of the battery covers.

15. The electric working equipment according to claim 14, characterized in that: The locking portion is a hook.

16. The electric working equipment according to claim 13 or 14, characterized in that: The battery cover is fixed to the battery holding portion by screws.

17. The electric working equipment according to claim 16, characterized in that: The entire screw is disposed inside the battery cover and inside the battery holding portion.

18. The electric working equipment according to claim 16, characterized in that A plurality of screws are provided.

19. The electric working equipment according to claim 17, characterized in that: A plurality of screws are provided.

20. The electric working equipment according to claim 13 or 14, characterized in that: Each of the battery covers is provided with an opening and a cover, wherein the opening enables the batteries to be attached and detached in a state where the batteries are mounted in the battery holding portion, and the cover enables the opening to be opened and closed.

21. The electric working equipment according to claim 20, characterized in that The opening is formed on a trajectory in a direction in which each of the batteries is attached to and detached from the battery holding portion.

22. The electric working equipment according to claim 13 or 14, characterized in that: The battery cover and the battery can be installed in the battery holding portion in sequence. When the battery is installed first, the battery cover cannot be installed.

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