JP2014037018A - Electric apparatus, battery pack, and electric device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the sealability for attaching a battery pack to an electric power tool.SOLUTION: A battery pack 27 holding battery cells 21 may be attached to or removed from an electric power tool 10. The electric power tool 10 includes: a tool body 11 provided with an attachment part 14 where the battery pack 27 is attached to or removed from; a guide groove which is provided at the attachment part 14 and sets a direction that the battery pack 27 is attached to and removed from; an apparatus side terminal which is provided at the attachment part 14 and with which a battery side terminal provided at the battery pack 27 is connected; and a seal member 22 which is provided at the attachment part 14 and seals a connection portion between the battery side terminal and the apparatus side terminal.

Description

  The present invention relates to an electric device to which a battery pack can be attached and detached, a battery pack that can be attached to and detached from the electric device, and an electric device configured by combining the electric device and the battery pack.

  Conventionally, an electric tool (electrical device) to which a battery pack is attached and detached and a battery pack configured to be attachable to and detachable from the electric tool are known, and an example of the electric tool and the battery pack is Patent Document 1. It is described in. The electric tool described in Patent Document 1 includes a hollow tool body, a hammer case fixed to the open end of the tool body, and a grip (protrusion) provided continuously on the tool body. The electric power tool described in Patent Document 1 is intended to ensure sealing performance. In Patent Document 1, elastic rubber is applied to the insertion portion of the battery pack in the grip by a two-layer molding process. Have been described.

JP 2002-254356 A

  By the way, when the battery pack is attached to or removed from the grip of the electric tool, there is a configuration in which the battery pack and the grip are moved (slid) in a direction intersecting the protruding direction of the grip. However, the configuration for ensuring the sealing performance described in Patent Document 1 does not describe in which direction the battery pack and the grip are moved to attach the battery pack to the insertion portion. For this reason, even if the structure described in Patent Document 1 is used in an electric tool configured to attach the battery pack to the grip by moving the battery pack and the grip in a direction intersecting the protruding direction of the grip, There was a possibility that sufficient sealability could not be obtained.

  The objective of this invention is improving the sealing performance of the electric equipment in which a battery pack is attached, improving the sealing performance of the battery pack attached to an electric equipment, and improving the sealing performance of an electric apparatus.

  The electrical device of the present invention is an electrical device in which a battery pack holding battery cells can be attached and detached, and an equipment body provided with a mounting portion to which the battery pack is attached and removed, and the mounting portion A guide portion that determines the mounting and removal directions of the battery pack; a device-side terminal that is provided in the mounting portion and to which a battery-side terminal provided in the battery pack is connected; and the mounting portion And a sealing member that seals a connection portion between the battery side terminal and the device side terminal.

  In one aspect of the present invention, the seal member is formed in an endless shape that contacts the battery pack attached to the mounting portion and surrounds a connection portion between the battery-side terminal and the device-side terminal. And

  In another aspect of the present invention, the seal member is provided in the battery pack and is connected via a connection surface and has a plate portion and a mount portion having different heights, and the plate portion, the mount portion, and the connection surface. It touches.

  In another aspect of the present invention, the seal member includes a seal lip that contacts the plate portion, the mount portion, and the connection surface, and a straight line along the mounting direction of the battery pack with respect to the mounting portion, and the seal lip The tip of the seal lip is inclined so as to intersect the extended line of the tip of the seal.

  Still another aspect of the present invention is characterized in that the seal lip has a shape in which the width becomes narrower toward the distal end side.

  According to still another aspect of the present invention, a terminal holder for attaching the device side terminal to the mounting portion is provided, and the seal member is interposed between the mounting portion and the terminal holder. And

  The electrical device of the present invention is an electrical device in which a battery pack holding battery cells can be attached and detached, and an equipment body provided with a mounting portion to which the battery pack is attached and removed, and the mounting portion A terminal holder provided; and a device-side terminal provided in the terminal holder and connected to a battery-side terminal provided in the battery pack, between the mounting portion and the terminal holder, A seal member for sealing a connection portion between the battery side terminal and the device side terminal is interposed.

  One aspect of the present invention is characterized in that the sealing member is in contact with the battery pack attached to the mounting portion and seals a connection portion between the battery-side terminal and the device-side terminal.

  In another aspect of the present invention, the terminal holder and the mounting portion are provided with a fixing element that fixes the terminal holder to the mounting portion, and the seal member is not in contact with the fixing element. It is characterized by.

  The battery pack of the present invention is a battery pack that holds a battery cell and can be attached to and detached from an electric device, and is provided in a housing case that houses the battery cell, and in the housing case, and A battery-side terminal connected to a device-side terminal provided in the electrical device, and formed in the housing case, and communicates the inside and the outside of the housing case, and the battery-side terminal is inserted. And a sealing member provided around the terminal insertion hole in the housing case and in contact with the electrical device.

  In the battery pack of the present invention, the housing case has a plate portion and a mount portion having different heights connected via a connection surface, and the terminal insertion hole is formed across the mount portion and the connection surface. The seal member is provided across the mount portion, the connection surface, and the plate portion.

  The electrical device of the present invention is an electrical device having a battery pack holding battery cells, and an electrical device to which the battery pack can be attached and detached, the battery pack having a battery side terminal, The electric device has a structure described in any of the electric devices of the present invention.

  The electrical device of the present invention is an electrical device having a battery pack holding battery cells and an electrical device to which the battery pack can be attached and detached, the electrical device having a device-side terminal, The battery pack has a structure described in the battery pack of the present invention.

  According to the electric device of the present invention, when the battery pack holding the battery cell is attached to the mounting portion, the connection portion between the battery side terminal and the device side terminal can be sealed by the sealing member. Therefore, it can suppress that a foreign material penetrate | invades into the connection part of a battery side terminal and an apparatus side terminal.

  According to one aspect of the present invention, the endless seal member contacts the battery pack attached to the mounting portion to form a seal surface. Therefore, the sealing performance of the connection portion between the battery side terminal and the device side terminal is improved.

  According to another aspect of the present invention, the seal member contacts the plate portion, the mount portion, and the connection surface, and forms the seal surface so as to surround the connection portion between the battery side terminal and the device side terminal.

  According to another aspect of the present invention, it is possible to prevent the seal lip and the battery pack from coming into contact with each other and rubbing in the middle of attaching the battery pack to the mounting portion. Therefore, wear of the seal lip can be suppressed, and the sealing performance is improved.

  According to another aspect of the present invention, the contact resistance between the seal lip and the battery pack can be further reduced.

  According to another aspect of the present invention, it is possible to prevent foreign matter inside the mounting portion from entering between the device-side terminal and the battery-side terminal.

  According to the electrical device of the present invention, the seal member can prevent foreign matter inside the mounting portion from entering between the device-side terminal and the battery-side terminal.

  According to one aspect of the present invention, when the battery pack is attached, the sealing member is further brought into contact with the battery pack to form a sealing surface, so that the sealing performance is further improved.

  According to another aspect of the present invention, when the terminal holder is fixed to the mounting portion, the seal member and the fixing element can be prevented from coming into contact with each other, and the sealing performance of the seal member can be prevented from being lowered.

  According to the battery pack of the present invention, when the battery pack is attached to the electric device, the sealing member contacts the electric device around the terminal insertion hole to form a sealing surface. Therefore, it can suppress that a foreign material penetrate | invades into the connection part of a battery side terminal and an apparatus side terminal.

  According to one aspect of the present invention, it is possible to seal a terminal insertion hole formed over a mount portion and a plate portion having different heights.

  According to the electric device of the present invention, when the battery pack holding the battery cell is attached to the mounting portion of the electric device, the connection portion between the battery side terminal and the device side terminal can be sealed by the sealing member.

  According to the electric device of the present invention, when the battery pack holding the battery cell is attached to the mounting portion of the electric device, the sealing member provided in the housing case of the battery pack contacts the electric device, and the battery-side terminal and the device The connecting portion with the side terminal can be sealed.

It is a perspective view which shows the state by which the electric apparatus of this invention was assembled. It is a perspective view before assembling the electric apparatus of this invention. It is a perspective view which shows the mounting part of the electric tool which is embodiment of this invention. It is a perspective view which shows the state which divided | segmented the tool main body of the electric tool which is embodiment of this invention. It is a perspective view which shows the state which divided | segmented the tool main body of the electric tool which is embodiment of this invention. It is the perspective view which decomposed | disassembled the tool main body and terminal holder of the electric tool which are embodiment of this invention. It is a perspective view of the terminal holder shown in FIGS. It is the perspective view which attached the sealing member to the terminal holder shown in FIG. It is a fragmentary perspective view which shows the state which the sealing member which comprises this invention is contacting the cover of a battery pack. It is a partial side view which shows the state which the seal member which comprises this invention is contacting the cover of a battery pack. It is a perspective view of the battery pack attached to the electric tool which is embodiment of this invention. FIG. 12 is a perspective view showing a state where a seal member is in contact with the cover of the battery pack of FIG. 11. It is a disassembled perspective view of the battery pack shown in FIG. It is a perspective view which shows the battery pack of this invention. It is a disassembled perspective view of the battery pack shown in FIG. FIG. 15 is a schematic diagram before the seal member of the battery pack shown in FIG. 14 comes into contact with the mounting portion.

  Hereinafter, embodiments of an electric device, an electric device, and a battery pack of the present invention will be described in detail with reference to the drawings. In the following embodiments, an electric tool included in an electric device will be described as an example. The electric power tool 10 shown in FIGS. 1 and 2 has a tool body 11 formed of a resin material. The tool body 11 includes a casing 12, a grip 13, and a mounting portion 14. The casing 12 is configured in a cylindrical shape, and an electric motor M is provided inside the casing 12. The electric motor M has a rotating shaft (not shown) that rotates about the axis A. A tip tool 49 can be attached to and detached from one end of the casing 12. Further, a power transmission mechanism (not shown) for transmitting the power of the electric motor M to the tip tool 49 is provided in the casing 12. The power transmission mechanism is at least one of a structure that converts the rotational motion of the rotating shaft of the electric motor M into a rotational motion of the tip tool 49 and a structure that converts the rotational motion of the electric motor M into a reciprocating motion of the tip tool 49. It has the structure of. The tip tool 49 rotates or reciprocates about the axis A. That is, the electric tool 10 includes a drill, a driver, a hammer, a hammer drill, a hammer driver, and the like.

  The grip 13 is formed continuously with the casing 12 and protrudes from the casing 12 in a predetermined direction. The protruding direction of the grip 13 is a direction intersecting the axis A within a plane including the axis A. A circuit board (not shown) that is electrically connected to the electric motor M is provided inside the grip 13. The mounting portion 14 is provided at an end portion in the protruding direction of the grip 13. The casing 12, the grip 13, and the mounting portion 14 are integrally formed of a resin material or the like. Further, as shown in FIG. 3, the tool body 11 has two component pieces 11a divided along a dividing surface (partition line) 11d, and the tool body 11 is assembled by connecting and fixing the two component pieces 11a. It has been. The axis A is located in the dividing surface 11d, and the dividing surface 11d is located across the casing 12, the grip 13, and the mounting portion 14. Further, the two component pieces 11a have a shape and a configuration that are substantially symmetrical with respect to the dividing surface 11d. That is, the casing 12, the grip 13, and the mounting portion 14 have a symmetrical shape and structure with the dividing surface 11d therebetween.

  A ventilation hole 12a is formed in the casing 12, and the inside and the outside of the casing 12 communicate with each other through the ventilation hole 12a. The vent hole 12 a is an air passage for cooling the electric motor M. In addition, the mounting portion 14 is provided with a first partition wall 15 and a second partition wall 16 as shown in FIGS. The first partition wall 15 and the second partition wall 16 are extended in a direction substantially perpendicular to the dividing surface 11d. That is, the first partition wall 15 and the second partition wall 16 extend substantially parallel to the axis A. The first partition wall 15 and the second partition wall 16 partition the space B formed from the inside of the mounting portion 14 to the inside of the grip 13 and the opening 17 of the mounting portion 14.

  The first partition wall 15 and the second partition wall 16 are arranged behind the tip tool 49 in the direction along the axis A. Further, the first partition wall 15 is disposed in front of the second partition wall 16 in the direction along the axis A. Further, the first partition wall 15 and the second partition wall 16 are provided at different positions in the protruding direction of the grip 13. The first partition wall 15 is provided at a position closer to the grip 13 than the second partition wall 16 in the protruding direction of the grip 13. The first partition wall 15 and the second partition wall 16 are formed across the two component pieces 11a. Further, the space B communicates with the inside of the casing 12. Further, the mounting portion 14 is provided with a locking hole 18. The locking hole 18 is provided in each of the two component pieces 11a.

  An attachment hole 19 is provided between the first partition wall 15 and the second partition wall 16 in the mounting portion 14 as shown in FIG. The mounting hole 19 is formed by two component pieces 11a. The attachment hole 19 is provided for attaching a terminal holder (terminal holder) 20.

  On the other hand, ribs 21 are formed on the edges forming the attachment holes 19 in the first partition wall 15 and the second partition wall 16 and on the inner surface forming the attachment holes 19 in the mounting portion 14. The rib 21 is formed in an annular shape across the two component pieces 11a. The terminal holder 20 is indirectly supported by the rib 21. The terminal holder 20 is integrally formed of a resin material. As shown in FIGS. 7 and 8, the terminal holder 20 includes a substantially rectangular flat plate 20a and a connection plate 20c connected to the long side of the flat plate 20a via a curved portion 20b. A seal member 22 is attached to the outer periphery of the terminal holder 20. The seal member 22 is integrally formed of a rubber-like elastic body. As shown in FIG. 9, an annular inner groove 22 a is formed on the inner periphery of the seal member 22, and an annular outer groove 22 b is formed on the outer periphery of the seal member 22. An annular seal lip 22 c is formed over the entire circumference of the seal member 22. The outer peripheral edge of the terminal holder 20 is fitted into the inner groove 22a of the seal member 22, and the terminal holder 20 and the seal member 22 are integrated by an adhesive. Note that the terminal holder 20 and the seal member 22 can be integrated by two-layer molding.

  Further, the rib 21 is fitted into the outer groove 22 b of the seal member 22, and the seal member 22 is fixed to the mounting portion 14. Thus, the terminal holder 20 is sandwiched and fixed via the seal member 22 by the ribs 21 provided on the two component pieces 11a. As shown in FIGS. 5 and 6, the terminal holder 20 is provided with locking pieces 20d protruding from the short sides of the flat plate 20a. The locking piece 20 d is inserted into the locking hole 18 of the mounting portion 14. As a result, the terminal holder 20 is more reliably positioned and fixed with respect to the mounting portion 14. In a state where the terminal holder 20 is fixed to the mounting portion 14, the seal lip 22 c of the seal member 22 is positioned on the opening 17 side.

  As shown in FIGS. 8 and 10, the seal lip 22c is inclined in such a direction that the height of the tip of the portion corresponding to the short side of the flat plate 20a becomes higher as it approaches the curved portion 20b. The short side of the flat plate 20 a extends in the direction along the axis A in a state where the seal member 22 is fixed to the mounting portion 14. Further, “the height of the tip of the seal lip 22 c” includes the height along the protruding direction of the grip 13. Here, when the center line in the width direction of the outer groove 22b corresponding to the short side of the flat plate 20a is C and the extension line at the tip of the seal lip 22c is D, the distance between the center line C and the extension line D is Is set to an angle θ. In the state where the seal member 22 is fixed to the mounting portion 14, the center line C is parallel to the axis A. The center line C coincides with the direction along the moving direction of the battery pack 27 when the battery pack 27 is attached to the mounting portion 14 of the electric tool 10.

  Furthermore, the tip of the portion corresponding to the short side of the connecting plate 20c among the tips of the seal lip 22c is substantially perpendicular to the center line C. In addition, the cross-sectional shape in the width direction of the seal lip 22c has a shape in which the width becomes narrower toward the tip side. In the present embodiment, the tip of the seal lip has an arc shape in cross section as shown in FIG. The cross-sectional shape in the width direction of the seal lip 22c is the same shape over the entire circumference.

  As shown in FIGS. 4 to 8, a plurality of device side terminals (terminals) 23 are embedded in the terminal holder 20. The some apparatus side terminal 23 is comprised with the electroconductive metal material. Further, in a state where the terminal holder 20 is fixed to the mounting portion 14, one end 23 a of the plurality of device side terminals 23 is positioned on the space side, and the other end 23 b of the plurality of device side terminals 23 is positioned on the opening 17. ing. One end 23a of the device side terminal 23 is electrically connected to the substrate. The other end 23b of the plurality of device side terminals 23 has a plate shape, and the other end 23b of the plurality of device side terminals 23 extends in a direction along the dividing surface 11d of the two component pieces 11a. .

  The mounting portion 14 has two guide grooves 24 provided on both sides of the opening 17 as shown in FIGS. 3 and 4. One guide groove 24 is provided in each of the two component pieces 11a. The two guide grooves 24 are extended in the direction along the axis A, and the two guide grooves 24 are parallel to each other. Further, the mounting portion 14 is provided with a convex portion 25. The convex portion 25 is provided by being divided into two component pieces 11a. Furthermore, the locking groove 26 provided with the locking groove 26 is provided in the two component pieces 11a near the guide groove 24 in the mounting portion 14, respectively.

  Next, the configuration of the battery pack 27 will be described with reference to FIGS. 2 and 11 to 13. The battery pack 27 can be attached to and detached from the mounting portion 14. Specifically, the battery pack 27 and the power tool 10 are relatively moved in the direction along the axis A, and the battery pack 27 is attached to or detached from the mounting portion 14.

  The battery pack 27 includes a storage case 28, and the storage case 28 includes a case main body 29 and a cover 30 that closes the opening 29 a of the case main body 29. A storage chamber is formed inside the case body 29 and the cover 30, and a plurality of battery cells 31 are stored in the storage chamber. The plurality of battery cells 31 are held by a holder 32 formed of a resin material. The battery cell 31 includes a lithium ion battery, a nickel cadmium battery, a nickel metal hydride battery, and the like. A circuit board 33 is attached to the holder 32, and the circuit board 33 is electrically connected to an electrode (not shown) of the battery cell 31. The circuit board 33 is provided with a plurality of battery side terminals 34. The plurality of battery side terminals 34 are made of a conductive metal material.

  The cover 30 is provided with a flat plate portion 35 and a mount portion 36 having a height different from that of the plate portion 35. A plurality of terminal insertion holes 37 are provided in the mount portion 36. The plurality of terminal insertion holes 37 are formed in a slit shape. The plurality of terminal insertion holes 37 communicate the housing chamber of the housing case 28 with the outside. The plurality of battery side terminals 34 are separately inserted into a plurality of terminal insertion holes 37. In addition, two guide rails 38 are provided on both sides of the plurality of terminal insertion holes 37 in the mount portion 36. The two guide rails 38 are parallel to each other and extend in the length direction of the plurality of terminal insertion holes 37.

  Further, two connection surfaces 43 that connect the surface of the mount portion 36 and the surface of the plate portion 35 are formed. The two connection surfaces 43 are provided at the ends of the plate portions 35 in the two guide rails 38. The surface of the mount part 36 and the surface of the plate part 35 are at different heights, and extension lines (not shown) between the two surfaces are parallel to each other. Here, the height is a direction intersecting the length direction of the guide rail 38. In the cover 30 of the present embodiment, the length direction of the guide rail 38 and the height direction are substantially perpendicular. The two connection surfaces 43 are substantially perpendicular to the surface of the plate portion 35 and the surface of the mount portion 36. The two connection surfaces 43 are parallel to the height direction, and the plurality of terminal insertion holes 37 are opened from the surface of the mount portion 36 to the connection surface 43. A protrusion 44 higher than the mount portion 36 is provided at the end of the cover 30 opposite to the plate portion 35. The protrusion 44 is provided with a recess 44a.

  Further, ribs 39 are provided on the surface of the mount portion 36 in the cover 30. The rib 39 protrudes from the surface of the mount portion 36, and the rib 39 is provided between the two guide rails 38. When the surface of the mount portion 36 is viewed in plan, the rib 39 is provided in a U shape so as to surround the plurality of terminal insertion holes 37. The rib 39 includes a first protrusion 39a linearly extending in the arrangement direction of the plurality of terminal insertion holes 37, and two second protrusions extending linearly continuously at both ends of the first protrusion 39a. And a protrusion 39b. The first projecting portion 39 a extends in a direction perpendicular to the two guide rails 38. The two second protrusions 39b extend in parallel with the two guide rails 38 and are parallel to each other. The first protrusion 39a has a constant height in the length direction, and the two second protrusions 39b have different heights in the length direction. As shown in FIG. 10, the height of the second projecting portion 39b decreases with increasing distance from the first projecting portion 39a. That is, the angle θ is set between the tip of the second protrusion 39b and the surface of the mount 36. The two angles θ shown in FIG. 10 are the same angle.

  Further, as shown in FIGS. 11 to 13, push buttons 40 are attached to both sides of the protruding portion 44 in the housing case 28. The push button 40 is attached to the housing case 28 so as to rotate within a range of a predetermined angle about the support shaft 40a. The push button 40 is provided with a locking claw 41, and the locking claw 41 is inserted into a hole 42 provided in the cover 30. The tip of the locking claw 41 is exposed to the outside through the hole 42. The push button 40 is pushed toward the outside of the housing case 28 by an elastic member (not shown).

  Next, an operation of attaching (mounting) the battery pack 27 to the mounting portion 14 of the electric tool 10 will be described. First, the power tool 10 and the battery pack 27 are arranged so that the two guide rails 38 and the two guide grooves 24 are substantially coaxial. At this time, the electric power tool 10 and the battery pack 27 are generally in a state as shown in FIG. Then, the power tool 10 and the battery pack 27 are brought close to each other, and the guide rail 38 is caused to enter the guide groove 24. That is, the guide rail 38 and the guide groove 24 define the relative movement direction of the mounting portion 14 and the battery pack 27 to be substantially linear. Then, the device side terminal 23 provided in the mounting portion 14 enters the terminal insertion hole 37 from the connection surface 43 side, the device side terminal 23 and the battery side terminal 34 are connected, and the convex portion 25 enters the concave portion 44a. In addition, the locking claw 41 enters the locking groove 26. As a result, the attachment of the battery pack 27 to the power tool 10 is completed as shown in FIG.

  When the battery pack 27 is attached to the mounting portion 14, the seal member 22 contacts the cover 30 of the battery pack 27 to form a seal surface as shown in FIG. Specifically, the seal lip 22c of the portion of the seal member 22 attached to the long side of the flat plate 20a contacts the first projecting portion 39a of the rib 39 to form a seal surface. Further, the seal lip 22c of the seal member 22 attached to the short side of the flat plate 20a contacts the second projecting portion 39b of the rib 39 to form a seal surface. Furthermore, the seal lip 22c of the portion of the seal member 22 attached to the short side of the connection plate 20c contacts the connection surface 43 to form a seal surface. Furthermore, the seal lip 22c of the seal member 22 attached to the long side of the connection plate 20c is in contact with the surface of the plate portion 35 to form a seal surface.

  Thus, the seal lip 22c of the annular seal member 22 contacts the cover 30 over the entire circumference to form an annular seal surface. The annular sealing surface surrounds a connection portion between the device side terminal 23 and the battery side terminal 34 in a space formed between the cover 30 and the mounting portion 14. Therefore, even if an external foreign object enters the space through the gap between the cover 30 and the mounting portion 14, the foreign object can be prevented from entering the connection portion between the device-side terminal 23 and the battery-side terminal 34.

  Further, as shown in FIG. 10, the height of the second projecting portion 39b decreases as the height of the second projecting portion 39b increases from the first projecting portion 39a. Further, the seal lip 22c corresponding to the short side of the flat plate 20a in the seal member 22 is inclined at an angle θ with respect to the center line C. For this reason, the portion of the seal lip 22c attached to the short side of the flat plate 20a does not rub against the second protrusion 39b while the battery pack 27 and the mounting portion 14 are moving relative to each other. Further, when the guide rail 38 starts to be inserted into the guide groove 24, the seal lip 22 c of the seal member 22 does not contact the cover 30. Therefore, wear of the seal lip 22c is suppressed. That is, the sealing performance of the sealing member 22 is improved in a state where the battery pack 27 is attached to the mounting portion 14. In addition, the electric power tool 10 can suppress an increase in operating force necessary for attaching the battery pack 27 to the mounting portion 14.

  Further, as shown in FIG. 9, the seal lip 22c is narrower as the cross-sectional shape in the width direction is closer to the tip. For this reason, it is possible to suppress an increase in sliding resistance even when a part of the seal lip 22c comes into contact with the second projecting portion 39b in the process of attaching the battery pack 27 to the mounting portion 14. Therefore, the electric power tool 10 can reduce the operating force required to attach the battery pack 27 to the mounting portion 14.

  Furthermore, the seal member 22 is interposed between the mounting portion 14 and the terminal holder 20 as shown in FIGS. That is, the sealing member 22 has a sealing function between the mounting portion 14 and the terminal holder 20. Therefore, in the electric power tool 10, foreign matter outside the casing 12 enters the inside of the casing 12 via the vent hole 12a, and the foreign matter enters the mounting portion 14 via the inside B of the grip 13. However, the foreign matter can be prevented from entering the connecting portion between the device side terminal 23 and the battery side terminal 34. Further, the seal member 22 is not in contact with the locking piece 20 d and the locking hole 18. Accordingly, when the two component pieces 11a are coupled and fixed by interposing the terminal holder 20 and the seal member 22 between the two component pieces 11a, it is possible to avoid scratches and wear of the seal member 22. When the battery pack 27 is attached to the electric power tool 10, the push button is pressed to cause the locking claw 41 to come out of the locking groove 26, and the battery pack 27 is oriented in the direction along the axis A in the direction opposite to the above. When moved, the battery pack 27 can be removed from the mounting portion 14.

  Next, the battery pack of this invention is demonstrated based on FIG.14 and FIG.15. The cover 30 of the battery pack 27 has a mounting hole 45 formed across the plate portion 35 and the mount portion 36. An annular seal member 46 is fitted in the mounting hole 45. The seal member 46 is fixed to the block 47. A plurality of terminal insertion holes 37 are formed in the block 47, and a seal member 46 is attached along the outer peripheral surface of the block 47. Thus, the annular seal member 46 is attached around the terminal insertion hole 37.

  The seal member 46 is continuous with the first straight portion 46 a that extends linearly perpendicular to the guide rail 38, and both ends of the first straight portion 46 a, and is linearly parallel to the guide rail 38. And an extended second straight portion 46b. Further, the seal member 46 has two connection portions 46 c that are respectively formed continuously with the two second straight portions 46 b and extended along the connection surface 43. Further, the seal member 46 includes a third straight portion 46d in which both ends of the two connection portions 46c are connected. The third straight part 46d is parallel to the first straight part 46a.

  In the sealing member 46 configured as described above, the first straight portion 46 a is fixed to a portion of the inner peripheral surface of the mounting hole 45 that is perpendicular to the guide rail 38. The second straight portion 46 b is fixed to a portion parallel to the guide rail 38 on the inner peripheral surface of the mounting hole 45. The two connection portions 46 c are in contact with the two connection surfaces 43 separately. The third straight portion 46 d is fixed to a portion along the plate portion 35 on the inner peripheral surface of the mounting hole 45. Thus, in a state where the seal member 46 is fitted in the mounting hole 45 and fixed to the cover 30, the seal member 46 contacts the cover 30 to form an annular seal surface. Then, with the seal member 46 attached to the cover, an angle θ is set between the tip of the second straight portion 46b and the surface of the mount portion 36 as shown in FIG. That is, the height of the tip of the second straight part 46b is inclined so as to become lower as it approaches the connection part 46c.

  The block 47 is integrally formed of a non-conductive material, for example, a resin material, and the block 47 and the seal member 46 are integrated with an adhesive. The block 47 and the seal member 46 can be integrated by two-layer molding. The seal member 46 is integrally formed of a rubber-like elastic body, and a part of the seal member 46 protrudes from the surface of the mount portion 36. The seal lip of the seal member 46 along the guide rail 38 is inclined so that the protrusion amount with respect to the surface of the mount portion 36 decreases as the distance from the connection surface 43 decreases. Therefore, an angle θ is set between the surface of the mount portion 36 and the tip of the seal lip in the direction along the guide rail 38 of the seal member 46. A battery cell (not shown) is housed in the housing case 28 in the same manner as the battery pack 27 shown in FIG.

  The power tool mounting portion 14 to which the battery pack 27 shown in FIG. 14 is attached is configured as shown in FIG. A contact portion 48 with which the seal lip of the annular seal member 46 comes into contact is provided. The contact portion 48 is formed in an annular shape so as to surround a device side terminal (not shown). A portion of the contact portion 48 parallel to the axis (not shown) of the tip tool (not shown) is inclined with respect to the axis. That is, the angle θ is set between the straight line E parallel to the axis and the surface of the contact portion 48. 14 is not provided with the sealing member 22 having the above-described configuration. The other configuration of the electric power tool to which the battery pack 27 shown in FIG. 14 is attached is the same as that of the electric power tool shown in FIG. 1 and FIG.

  When the battery pack 27 and the power tool mounting portion 14 shown in FIG. 14 are moved in the same manner as in the example of FIG. 2 and the battery pack 27 is attached to the mounting portion 14, the device-side terminal and the battery-side terminal are connected. In addition, the seal lip of the seal member 46 contacts the contact portion 48 to form an annular seal surface. The seal member 46 is attached to the cover 30 of the battery pack 27 so as to surround a connection portion between the device side terminal and the battery side terminal. Therefore, the same effect as described above can be obtained. The seal lip of the seal member 46 is inclined, and an angle θ is formed between the tip of the seal lip and the surface of the mount portion 36. Further, an angle θ is set between the surface of the contact portion 48 and the straight line E. The two angles θ shown in FIG. 16 are the same angle. For this reason, the seal lip of the seal member 46 does not contact the contact portion 48 while the battery pack 27 is attached to the mounting portion 14. When the operation of attaching the battery pack 27 to the mounting portion 14 is completed, the seal lip of the seal member 46 contacts the contact portion 48 over the entire circumference to form an annular seal surface. Therefore, the battery pack 27 shown in FIGS. 14 to 16 can obtain the same effects as those of the electric power tool 10 and the battery pack 27 described with reference to FIGS.

  The correspondence between the configuration described in the present embodiment and the configuration of the present invention will be described. The power tool 10 corresponds to the electric device of the present invention, the center line C corresponds to the straight line of the present invention, and the grip 13 The mounting portion 14 corresponds to the protruding portion of the present invention, the locking hole 18 and the locking piece 20d correspond to the fixing element of the present invention, the guide groove 24 corresponds to the guide portion of the present invention, and the tool. The main body 11 corresponds to the device main body of the present invention. Furthermore, the electric tool 10 and the battery pack 27 are combined to constitute the electric device of the present invention.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, the electric device of the present invention includes a grinder (grinding tool), a sander (polishing tool), a nailing machine, a screw driving machine, a tacker, a dust collector (cleaner), a blower (fan, blower), Includes pumps, high pressure washers, chain saws (cutting tools), gardening tools (mowers, plant clippers), tillers, etc. That is, the electric device of the present invention includes a device that rotates the electric motor with the electric power of the battery pack and converts the rotational motion into at least one of the reciprocating motion and the rotational motion of the operating member. Moreover, the electrical equipment of the present invention includes a torch light (flashlight) and the like. That is, the electrical device of the present invention includes a lighting device that converts electrical energy supplied from the battery pack into light energy.

  The “endless shape” in the present invention is a structure in which the seal member is an annular integrally formed product as a whole, and the seal member is fixed to the object even if there is a cut at least at one position in the length direction of the seal member. Includes a structure that is continuous and endless. In the present invention, the direction intersecting the direction in which the battery pack is attached to the tool body includes a configuration in which the direction in which the battery pack is attached to the tool body and the direction having an angle are not on the same plane. The direction having an angle includes two dimensions and three dimensions. Further, in the fixing element of the present invention, in addition to the locking piece 20d and the locking hole 18, a locking claw (not shown) provided in the mounting portion is provided in a locking hole (not shown) provided in the terminal holder. Includes the configuration to be inserted. In the present invention, the configuration in which the width of the seal lip becomes narrower as the tip end side includes that the cross-sectional shape of the seal lip in the width direction is an arc shape and a wedge shape. Furthermore, the storage case of the present invention includes a configuration capable of storing less than four battery cells, or nine or more battery cells.

  Furthermore, the electric tool of this embodiment includes a structure in which an electric motor is provided inside the casing and a structure in which an electric motor is provided inside the grip. In the present embodiment, the rubber-like elastic body constituting the seal member has a rigidity, shape, and dimensions such that the elastic deformation rate is 20% or more. The seal member includes a solid member and a porous sponge. Further, in this embodiment, the guide mechanism for determining the direction in which the battery pack 27 is attached to and detached from the mounting portion 14 is mounted in addition to the guide groove 24 provided in the mounting portion 14 and the guide rail 38 provided in the cover 30. A configuration in which a guide rail (not shown) is provided in the portion 14 and a guide groove (not shown) is provided in the cover 30 is also included.

DESCRIPTION OF SYMBOLS 10 Electric tool 11 Tool main body 14 Mounting part 21 Battery cell 22 Seal member 27 Battery pack

Claims (13)

An electric device capable of attaching and removing a battery pack holding a battery cell,
An apparatus main body provided with a mounting portion to which the battery pack is attached and removed;
A guide portion that is provided in the mounting portion, and that determines a mounting and removal direction of the battery pack;
A device-side terminal to which the battery-side terminal provided in the mounting portion and provided in the battery pack is connected;
An electric device comprising: a sealing member that is provided in the mounting portion and seals a connection portion between the battery side terminal and the device side terminal.   The said sealing member is formed in the endless shape which contacts the said battery pack attached to the said mounting part, and surrounds the connection part of the said battery side terminal and the said apparatus side terminal. Electrical equipment.   The seal member is provided in the battery pack and contacts the plate portion, the mount portion, and the plate portion, the mount portion, and the connection surface having different heights connected via a connection surface. The electric device according to claim 2. The seal member has a seal lip that contacts the plate portion, the mount portion, and the connection surface,
The tip of the seal lip is inclined so that a straight line along the mounting direction of the battery pack with respect to the mounting portion intersects with an extension line of the tip of the seal lip. The electrical equipment described.   The electrical device according to any one of claims 1 to 4, wherein the seal lip has a shape that becomes narrower toward a distal end side.   The terminal holder which attaches the said apparatus side terminal to the said mounting part is provided, and the said sealing member is interposed between the said mounting part and the said terminal holder, The any one of Claims 1-4 characterized by the above-mentioned. Electrical equipment according to crab. An electric device capable of attaching and removing a battery pack holding a battery cell,
An apparatus main body provided with a mounting portion to which the battery pack is attached and removed;
A terminal holder provided in the mounting portion;
A device side terminal to which a battery side terminal provided in the terminal holder and provided in the battery pack is connected;
An electrical device, wherein a sealing member for sealing a connection portion between the battery side terminal and the device side terminal is interposed between the mounting portion and the terminal holder.   The electrical device according to claim 7, wherein the seal member contacts the battery pack attached to the mounting portion to seal a connection portion between the battery side terminal and the device side terminal. The terminal holder and the mounting portion are provided with a fixing element for fixing the terminal holder to the mounting portion,
The electric device according to claim 7, wherein the seal member is not in contact with the fixing element. A battery pack that holds battery cells and is attachable to and detachable from electrical equipment,
A housing case for housing the battery cell;
A battery-side terminal provided inside the housing case and connected to a device-side terminal provided in the electrical device;
A terminal insertion hole formed in the housing case, communicating between the inside and the outside of the housing case, and into which the battery-side terminal is inserted;
A battery pack, comprising: a sealing member provided around the terminal insertion hole in the housing case and in contact with the electric device. The housing case has a plate part and a mount part having different heights connected via a connection surface,
The terminal insertion hole is formed across the mount portion and the connection surface,
The battery pack according to claim 10, wherein the seal member is provided across the mount portion, the connection surface, and the plate portion. An electric device having a battery pack holding battery cells and an electric device to which the battery pack can be attached and detached,
The battery pack has a battery side terminal,
The electrical apparatus has the configuration described in any one of claims 1 to 9. An electric device having a battery pack holding battery cells and an electric device to which the battery pack can be attached and detached,
The electrical device has a device side terminal,
The battery pack has the configuration described in claim 10 or 11.

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