JP2018007338A - Charger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charger which enables storage which is convenient when taken into/out from a case.SOLUTION: A charger includes: a charger body; a housing 2 which houses the charger body; and a cord 3 with a plug which is connected with the charger body and led out to the outside of the housing 2. An attachment recessed part 6 to which a battery for an electric tool is attached is formed in the housing 2. The housing 2 includes a plug holding part 11 which holds a plug 10 in a state where at least a part of the plug 10 included in a tip of the cord 3 with the plug is housed in the attachment recessed part 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a charger for charging a battery for an electric tool.

  The charger is for charging a battery for an electric tool mounted on a hand-held electric tool including an electric drill, an electric screwdriver, and an electric screwdriver drill. Even when the battery is fully charged, the power tool is used up for a predetermined period of time, so that the amount of charge used up is consumed and the power tool cannot be used during the work. Therefore, a spare battery is always brought into the case together with the charger and brought to the work place. When the battery is exhausted by using the electric tool for a predetermined time and the charge is used up, the charger and the spare battery are taken out from the case, the exhausted battery is removed from the electric tool, and the spare battery is attached to the electric tool. At the same time, after the exhausted battery is attached to the charger taken out from the case, the charger is inserted into the outlet for charging (see, for example, Patent Document 1).

JP 2004-147360 A

  In the charger disclosed in Patent Document 1, since the plug provided at the tip of the charger cord is free with respect to the charger, the plug is caught on the edge of the case when the charger is stored in the case after the work is completed. It was inconvenient to put in and out of the charger because it obstructed storage and when the charger was taken out of the case, it was impossible to immediately find out where the plug was.

  Then, this invention is made | formed in view of this situation, and makes it a subject to provide the charger which can be accommodated conveniently at the time of putting in / out of a case.

  A charger according to the present invention includes a charger main body, a housing that houses the charger main body, and a cord with a plug that is connected to the charger main body and is led out of the housing, The housing is a charger in which a mounting recess for mounting a battery for an electric tool is formed, and at least a part of the plug provided at the tip of the cord with the plug is in the mounting recess. The housing includes a plug holding portion for holding the plug.

  According to the present invention, since the plug is held by the plug holding portion in a state where at least a part of the plug provided at the tip of the cord with the plug is housed in the mounting recess, when the case is opened and the charger is taken out In addition, it is possible to immediately find a plug that is always held in place with respect to the charger and quickly insert the plug into the outlet. In addition, when the charger is stored in the case after the work is completed, at least a part of the plug can be held in the mounting recess, so that the plug contacts the outer peripheral edge of the case and the plug does not interfere with the storage. There is no trouble of doing.

  Further, in the charger according to the present invention, the plug holding part is a fitting part formed on a wall part constituting the mounting recess, and the fitting part in which the plug is fitted and held is provided. The structure including is preferable.

  According to such a configuration, an increase in the number of parts can be suppressed by forming the plug holding portion in the wall portion constituting the mounting recess, compared to a case where a new plug holding portion is provided. Moreover, since the plug holding part is comprised in the fitting part by which a plug is fitted and hold | maintained, a plug can be reliably hold | maintained at a plug holding part by fitting.

  The charger according to the present invention includes a cord holding portion that holds the cords of the cords with plugs in a bundled state, and the wall portion defines the cord holding portion and the mounting recess. It is preferable that they are arranged as described above.

  According to such a configuration, the cords with plugs are held together and held by the cord holding unit, so that the cords with plugs are not scattered, which is advantageous in terms of handling. Further, by arranging the wall portion so as to partition the cord holding portion and the mounting concave portion, the work of holding the cord together and the work of holding the plug can be performed side by side, so the workability is good. .

  In the charger according to the present invention, the fitting portion is configured such that the plug held in the fitting portion is lower than or the same height as the highest top portion of the wall portion. Preferably it is.

  According to such a configuration, since the plug held in the fitting portion does not protrude upward from the highest top portion of the wall portion, the plug can be stored compactly in the case.

  As described above, according to the present invention, the housing is provided with the plug holding portion that holds the plug in a state where at least a part of the plug provided at the tip of the plug-attached cord is accommodated in the mounting recess. It is possible to provide a battery charger that can be conveniently stored when being taken in and out.

The charger which concerns on one Embodiment of this invention is shown, The perspective view of the charger of the state in which the cord with a plug is wound and the plug is hold | maintained in the predetermined fitting position is shown. The top view of the charger is shown. The top view of the charger which abbreviate | omitted the cord with a plug is shown. The AA sectional view taken on the line in FIG. 2 is shown. FIG. 3 is a sectional view taken along line BB in FIG. 2. The top view of the charger of other 1st Embodiment which changed the fitting position of the plug is shown. The top view of the charger of other 2nd Embodiment which changed the fitting position of the plug is shown.

  Hereinafter, an embodiment of a charger according to the present invention will be described with reference to the drawings. The charger 1 is shown in FIGS. The charger 1 is mounted on a power tool (not shown) and used to charge a battery (not shown) for a power tool that serves as a power source for driving the power tool. Specifically, the charger 1 includes a charger main body (not shown), a housing 2 that houses the charger main body, a cord with a plug that is connected to the charger main body and led out of the housing 2. 3 is provided. The electric tools include various electric power tools, electric screwdrivers, electric screwdriver drills, and various hand-held electric tools that can be driven by a battery.

  The charger body includes an AC-DC converter (not shown). The AC-DC converter is configured to convert an AC voltage supplied through a plug-attached cord 3 connected to an outlet into a DC voltage necessary for the battery and supply the DC voltage to the battery.

  The housing 2 has a horizontally long upper case 4 having a substantially rectangular shape in plan view, and leg portions 5A (only two are shown in FIG. 1) projecting downward at the four corners of the lower surface in a substantially rectangular shape in a horizontally long plan view. The battery case main body housed inside can be closed by being locked in the vertical direction by the locking means provided in both cases. The upper case 4 and the lower case 5 are made of ABS resin that is strong against impact force, but may be made of other various synthetic resins or may be made of various metals. A mounting recess 6 for mounting a battery is formed on the upper surface of the upper case 4.

  The mounting recess 6 is formed at one end portion in the long side direction (right end portion in the drawing view of FIG. 1), and on the other end portion in the long side direction (left end portion in the drawing view of FIG. 1) A cord holding portion 13 to be described later is formed to hold the cords 9 together. In addition, the mounting recess 6 has a bottom surface 6A configured as an inclined surface that is inclined so as to be higher at one end side in the short side direction (upper side in FIG. 1 to FIG. 3), and extends in the short side direction and the long side direction. A pair of wall portions 6B, 6C formed at a distance from each other, and an inner surface 6d of a connecting wall portion 6D for connecting the other ends in the short side direction of the pair of wall portions 6B, 6C; It consists of The configuration of the mounting recess 6 is changed according to the shape of the mounted battery.

  One wall portion 6B of the pair of wall portions 6B, 6C is located at one end portion in the long side direction, has an upper end surface 6E higher than the bottom surface 6A, and the upper end surface 6E is one end side in the short side direction (FIG. 1). It is comprised in the inclined surface which inclines so that it may become higher (upper side in the paper surface view of FIG. 3). This upper end surface 6E has the highest apex 6e at one end in the short side direction. The other wall portion 6C is disposed slightly on the other side in the longer side direction than the central portion in the longer side direction so as to partition the cord holding portion 13 and the mounting recess 6 described later. The other wall portion 6C has an upper end surface 6F that is higher than the bottom surface 6A, and the upper end surface 6F is inclined so as to be higher toward one end side in the short side direction (upper side as viewed in FIG. 1 to FIG. 3). It is composed of an inclined surface. The uppermost end 6F is provided with the highest apex 6f at one end in the short side direction. The top 6e and the top 6f are set to the same height. Further, the other end portions in the short side direction of the pair of wall portions 6B and 6C are provided with wide portions 6G and 6H that protrude inward and are wider than the one end portion in the short side direction. Protrusions 6I and 6J projecting inward and projecting inward are provided at substantially the center in the vertical direction at one end in the short side of the inner surfaces of the wide portions 6G and 6H.

  As shown in FIG. 3, the bottom surface 6 </ b> A includes a first bottom surface 61 located on one end side in the short side direction and a second bottom surface 62 located on the other end side in the short side direction. Is positioned lower than the second bottom surface 62. The first bottom surface 61 is located at the center in the long side direction, and is formed in a square shape in which the length in the long side direction and the length in the short side direction are substantially the same, and the substantially flat central bottom surface 61A that is the lowest. And a rectangular shape located on both sides of the central bottom surface 61A in the long side direction and having a length in the long side direction shorter than the length in the short side direction, and is slightly higher than the central bottom surface 61A. A pair of lateral bottom surfaces 61B and 61C formed on a curved surface located on the upper side as it is farther from 61A. The second bottom surface 62 is formed as a flat surface located above the first bottom surface 61, and a concave portion 62 </ b> A having a generally bowl shape in plan view is formed at the center of the second bottom surface 62 in the long side direction. The bottom surface 62 a of the recess 62 </ b> A is formed on a flat surface that is slightly higher than the central bottom surface 61 </ b> A of the first bottom surface 61.

  Further, the inner side surface 6d of the connecting wall portion 6D is formed in a flat surface parallel to the long side direction, and the flat inner side surface 6d includes five terminals 7 including a pair of terminals for charging the battery. A substantially U-shaped frame member 8 attached in a state of protruding in the short side direction with a predetermined interval in the long side direction is attached.

  In order to mount the battery in the mounting recess 6 of the charger 1 as described above, first, the orientation of the battery is adjusted so that the connection terminals of the battery face the five terminals 7, and then the battery is mounted in the mounting recess. The battery connection terminal is coupled to the five terminals 7 by moving the battery terminal 6 to the five terminals 7 side while sliding to 6, thereby completing the mounting of the battery. When the battery slides, the battery can be smoothly moved while being guided by the inner side surfaces 6b and 6c of the pair of wall portions 6B and 6C. Moreover, since the battery can be slid along the downward inclined surface from the high position to the low position at the time of movement, the battery can be moved more smoothly by utilizing its own weight.

  The plug-attached cord 3 includes a cord 9 having a predetermined length connected to the charger main body and led out from the housing 2, and a plug 10 connected to the tip of the cord 9.

  The cord 9 is configured by covering two electric wires with a covering member. The plug 10 includes a plug body 10A, a pair of terminals 10B and 10B that are arranged to project forward from the plug body 10A and are detachably inserted into an outlet (not shown), and a rear part that extends rearward from the rear end of the plug body 10A. 10C of edge parts.

  As shown in FIGS. 1 and 2, the plug main body 10A has a front side portion 101 that becomes narrower as it goes from the front end to the rear end, and a rear side that gets slightly wider as it goes rearward from the rear end of the front side portion 101. Part 102. The length of the front side portion 101 in the front-rear direction is set longer than the length of the rear side portion 102 in the front-rear direction. Note that the shape and length of the plug body 10A can be freely changed.

  The rear end portion 10C has substantially the same width from the front end to the rear end, and is set to be narrower than the plug body 10A. The rear end portion 10C has a length in the front-rear direction that is shorter than the length in the front-rear direction of the plug body 10A. Furthermore, the rear end portion 10C has flexibility, and even when the angle of the cord 9 is changed with respect to the plug 10, the rear end portion 10C is curved in accordance with the angle, so that the plug Can be prevented from being damaged.

  As shown in FIGS. 1 to 3, most of the plug 10 is housed in the mounting recess 6 in the wall 6 </ b> C on the side close to the central portion in the long side direction of the pair of walls 6 </ b> B and 6 </ b> C. In a state (a state in which the plug 10 does not protrude from the housing 2 in a plan view), a plug holding portion 11 that holds the plug 10 (here, the rear end portion 10C of the plug 10) is provided. Specifically, as shown in FIG. 2, the plug main body 10A and the pair of terminals 10B and 10B protruding from the plug main body 10A to the front side are accommodated in the mounting recess 6, and the front portion 10F of the rear end portion 10C is placed. Is held by the plug holding portion 11.

  As shown in FIGS. 2 and 4, the plug holding portion 11 is formed on the one wall portion 6C constituting the mounting recess 6 as described above, and the plug 10 is fitted with play. It is comprised by the fitting part hold | maintained. Specifically, the plug holding portion 11 includes a concave portion 12 that is recessed downward from the upper end at a position slightly closer to one end side in the short side direction than the central portion in the short side direction of the one wall portion 6C. The concave portion 12 includes a flat bottom surface 12A and a pair of flat vertical surfaces 12B and 12B which are opposed to rise upward from both ends in the short side direction of the bottom surface 12A, and each of the vertical surfaces 12B and 12B includes: A pair of protrusions 12T and 12T extending in the up-and-down direction projecting in the opposite direction is provided (see FIG. 3). Since the gap between the projections 12T and 12T is set so that a slight gap S (see FIG. 4) is generated between the projections 12T and 12T and the front portion 10F of the rear end portion 10C of the plug 10, the plug 10 The front portion 10F of the rear end portion 10C is fitted and held in the recess 12 with play. Here, the front portion 10F of the rear end portion 10C of the plug 10 is fitted in a state where there is play in the recess 12, but there is no play in the recess 12 (that is, the rear end portion 10C of the rear end portion 10C of the plug 10). The front part 10F and the pair of protrusions 12T and 12T may be configured to be engaged with each other). In the case of fitting with no play, the pair of protrusions 12T and 12T are made of elastic members having resilience, or the rear end portion 10C of the plug 10 is resilient with resilience. It is preferable to configure and implement an elastic member having

  Further, the plug holding part 11 is configured such that the depth of the plug 10 held by the plug holding part 11 is lower than the highest top part 6f (may be the same height) of the wall part 6C. . Specifically, as shown in FIG. 5, in the state where the front side portion 10F of the rear end portion 10C of the plug 10 is held in the recess 12, the upper surface 10U of the plug body 10A having the highest height among the plugs 10 is formed. The depth of the plug holding portion 11 is set so as to be lower than the top portion 6f (horizontal line L). Thus, since the plug 10 held by the plug holding part 11 does not protrude upward from the highest top part 6f of the wall part 6C, the charger 1 is compact in a case for carrying the battery or the charger 1. Can be stored.

  As shown in FIGS. 2 and 3, the cord 9 is held in a bundled state by winding the cord 9 around the other end in the long side opposite to the mounting recess 6 provided on one end in the long side. A cord holding portion 13 is formed. The cord holding portion 13 is composed of a recessed portion which is formed between the one wall portion 6C and the other end portion in the long side direction and is lowered by one step. The cord holding portion 13 forms an abutting surface that abuts when the cord 9 is wound, and has a substantially flat bottom surface 13A formed so as to go around the upper case 4 and the lower case 5, and a bottom surface 13A. And a pair of side surfaces 13B and 13C raised upward from both ends in the width direction (long side direction). Each of the side surfaces 13B or 13C is formed as an inclined surface extending toward the side away from the side surface 13B or 13C.

  As shown in FIGS. 1 and 2, when storing the charger 1, the cord 9 is wound around the cord holding portion 13 a plurality of times, and then the plug 10 is oriented in the long side direction. The rear end portion 10C of the plug 10 is fitted and held in the plug holding portion 11 as it is. Thus, by fitting and holding the rear end portion 10 </ b> C of the plug 10 in the plug holding portion 11, the plug-attached cord 3 is not scattered, which is advantageous in terms of handling. Further, the wall portion 6C is arranged so as to partition the cord holding portion 13 and the mounting recessed portion 6 so that the cord 9 is held together in the cord holding portion 13 and the rear end portion 10C of the plug 10 is held. Since the work of fitting and holding them can be performed side by side, workability is good.

  In addition, the charger which concerns on this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

  For example, as shown in FIG. 6, a pair of terminals 10 </ b> B and 10 </ b> B constituting the plug 10 may be fitted into a plug holding portion 11 that holds the plug 10. In this case, since the distance between the outer surfaces of the pair of terminals 10B and 10B is slightly larger than the distance between the protrusions 12T and 12T of the plug holding portion 11, the pair of terminals 10B and 10B are pushed inward by the protrusions 12T and 12T. In this way, the inclined position is located on the inner side toward the tip side. When the fitting of the pair of terminals 10B and 10B to the plug holding portion 11 is released, the pair of terminals 10B and 10B return to a parallel state by a restoring force. If the protrusions 12T and 12T of the plug holding part 11 are made of an elastically deformable material, the protrusions 12T and 12T are elastically deformed and become smaller as the pair of terminals 10B and 10B are fitted into the plug holding part 11. As a result, the pair of terminals 10B and 10B can be held in a parallel state.

  In FIGS. 1 and 2, the front portion 10F of the rear end portion 10C of the plug 10 is held in the recess 12. However, as shown in FIG. It may be held in the recess 12. Thus, the fitting position of the plug 10 with respect to the concave portion 12 is changed because the winding unevenness of the cord 9 occurs every time the cord 9 is wound around the cord holding portion 13, and the position of the plug 10 with respect to the concave portion 12 is changed. This is because is not constant. Thus, by changing the fitting position of the plug 10 with respect to the recess 12, it is not necessary to rewind the cord 9 many times and adjust the position of the plug 10, which is advantageous in terms of use. In addition, when the pair of terminals 10B and 10B of the plug 10 reaches the one wall portion 6B when the plug 10 is held in this manner, as shown in FIG. 7, the pair of terminals 10B and 10B are connected to the wall portion 6B. It is necessary to provide an escape recess 6K for avoiding the interference.

  In the above embodiment, the plug holding portion 11 that holds the plug 10 is formed on the wall portion 6C that constitutes the mounting recess 6. However, for example, a dedicated plug holding portion may be provided in the mounting recess 6, and the plug The specific configuration of the holding unit can be freely changed.

  Moreover, in the said embodiment, although the battery was slid and it mounted | wore with the mounting recessed part 6, the insertion-type mounting | wearing recessed part attached by inserting a battery may be sufficient.

  Moreover, in the said embodiment, although the code | cord | chord holding | maintenance part 13 was comprised from the recessed part which winds the code | cord | chord 9, the structure which equips the housing with the clip which pinches | interposes and hold | maintains the code | cord | wound wound together.

  In the above embodiment, at least a part of the plug 10 provided at the tip of the cord 3 with plug is in the mounting recess 6, but the entire plug 10 provided at the tip of the cord 3 with plug is used for mounting. It is good also as the state stored in the recessed part 6. FIG.

DESCRIPTION OF SYMBOLS 1 ... Charger, 2 ... Housing, 3 ... Cord with plug, 4 ... Upper case, 5 ... Lower case, 5A ... Leg part, 6 ... Recess for mounting, 6A ... Bottom, 6B, 6C ... Wall part, 6D ... Connecting wall portion, 6E, 6F ... upper end surface, 6G, 6H ... wide portion, 6I, 6J ... convex portion, 6K ... relief concave portion, 6b, 6c ... inner side surface, 6e, 6f ... top portion, 7 ... terminal, 8 ... frame Member, 9 ... Cord, 10 ... Plug, 10A ... Plug body, 10B ... Terminal, 10C ... Rear end portion, 10F ... Front side portion, 10G ... Rear side portion, 10U ... Top surface, 11 ... Plug holding portion, 12 ... Recessed portion, 12A ... bottom surface, 12B ... vertical surface, 12T ... projection, 13 ... cord holding portion, 13A ... bottom surface, 13B, 13C ... side surface, 61 ... first bottom surface, 61A ... center bottom surface, 61B, 61C ... side bottom surface, 62 ... Second bottom surface, 62A ... concave portion, 62a ... bottom surface, 101 ... front side portion 102 ... rear side, L ... horizontal line, S ... clearance

Claims (4)

A charger main body, a housing for housing the charger main body, and a cord with a plug connected to the charger main body and led out of the housing. A charger in which a mounting recess for mounting a battery is formed,
A charger comprising: a plug holding portion for holding the plug in a state in which at least a part of the plug provided at the tip of the cord with the plug is stored in the mounting recess.   2. The plug holding portion includes a fitting portion formed on a wall portion that constitutes the mounting recess, and includes a fitting portion on which the plug is fitted and held. The charger described.   The housing includes a cord holding portion that holds the cords of the cords with plugs in a bundled state, and the wall portion is disposed so as to partition the cord holding portion and the mounting recess. The charger according to claim 2.   The said fitting part is comprised so that the said plug hold | maintained at this fitting part may be lower than the highest top part of the said wall part, or may become the same height as this top part. 3. The charger according to 3.

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