JP2013111673A - Adapter for mounting power tool battery and power tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent use of a wrong charger and falling off of an adapter from a power tool despite the intention of a worker, when using the adapter.SOLUTION: An adapter for mounting a battery pack 24 is interposed between the power tool 10 and the battery pack 44. The power tool 10 and the battery pack 44 are detachable by tool-side lock means 28 and battery-side lock means 48, respectively. A lock operator 36A of the tool-side lock means 28 is disposed on a battery pack mounting surface 40 to be hidden by the battery pack 44 when mounting the battery pack 44.

Description

  The present invention relates to a battery mounting adapter for detachably mounting a battery pack on a power tool, and a power tool using the adapter.

  Electric tools using a detachable battery pack as a power source are known. In this type of electric tool, it is necessary to prepare different electric tools corresponding to different types of batteries with different loading methods. For example, there are a battery pack that can be inserted from below into a handle grip for an operator to hold the electric tool, and a battery pack that is slid horizontally on the lower end surface of the handle grip and attached. Further, in order to make it possible to use battery packs having different mounting methods for the same electric tool, there is an apparatus in which an adapter is interposed between the battery and the electric tool and the electric power of the battery is supplied to the tool through the adapter.

  Patent Document 1 discloses a battery pack that can be inserted into a handle grip of an electric power tool body in a substantially vertical direction from below, and that includes a latch bar mechanism that locks the battery pack at an insertion position (a mounting position or a loading position). Has been. The latch bar mechanism is manually operated against the return spring to provide a pressing surface (operator) for unlocking the latch bar mechanism on the outer wall surface of the battery case.

  Patent Document 2 discloses a battery pack 13 that is attached to and detached from a lower surface of a handle grip of an electric tool in a horizontal direction. That is, a horizontal slide groove (engagement recess 5) is provided in the front-rear direction on the lower surface of the handle grip (handle cover 29), and the battery pack 13 is provided with an engagement protrusion 23 that engages with the slide groove. 13 is detachable in the horizontal direction. Here, on the left and right side surfaces of the battery case, an operator (latch 25) is provided so that it can be pushed in, and a latch claw (24) interlocking with the pushing operation is provided in the guide groove (5) on the tool side (23). It is made possible to engage and disengage.

  Patent Document 3 discloses an adapter (7) interposed between the electric power tool (1) and the battery pack (6). That is, the adapter (7) can be inserted into the handle grip (handle portion 2B) of the electric tool (1) upward from below, and the battery pack (6) is placed horizontally on the lower surface (battery pack mounting surface) of the adapter (7). It can be detachable by sliding it. Here, the tool side latch means (8) for locking the adapter (7) and the electric tool (1) is released (unlocked) by pushing one operating portion 8a provided on the front surface of the adapter (7). The battery side latch means (9) for locking the adapter (7) and the battery pack (6) is released by unlocking the two operation parts (9a) provided on the left and right side surfaces of the battery pack (6) simultaneously (unlocked). ).

JP 2002-260618 A JP 2003-297212 A JP 2008-73799 A

  In Patent Document 1, the battery pack is pulled out from the tool body (the handle grip) and charged using a dedicated charger. Similarly, the battery of Patent Document 2 is removed by sliding the battery pack from the tool grip (handle cover 2) in the horizontal direction and charged with a dedicated charger. According to the thing of patent document 3, although it becomes possible to use the battery pack of the structure which cannot be directly connected to an electric tool via an adapter (for example, the battery pack of the loading system which slides horizontally and is attached or detached), In this case, the adapter can be removed from the electric tool by pushing in the operation portion 8a on the front surface with the battery pack attached.

  Since the battery pack has a dedicated one depending on the electric tool, the charger is also predetermined for each battery pack. For this reason, it is necessary to prepare various types of chargers corresponding to each battery pack and use them with caution so as not to make a mistake in the usage site where many types of electric tools are used.

  However, for example, the type of loading that is loaded onto the grip from below as in Patent Document 1 is basically the same as the loading format in which the adapter in Patent Document 3 is loaded into the power tool, and the power tool to be loaded is the same. If so, these loading formats are the same. For this reason, when charging the battery pack, the adapter with the battery pack of Patent Document 3 attached may be attached to the battery pack charger of Patent Document 1 as it is.

  On the other hand, when the types of batteries used in the battery pack are different, the normal charging method is different. For example, a NiCad (nickel cadmium) battery has a memory effect, so it needs to be charged in consideration of the amount of electricity remaining, sometimes refreshed to prevent battery performance deterioration, and not charged when the remaining capacity is high There is also a possibility. Nickel metal hydride batteries having a large discharge capacity are also widely used. In these batteries, the charging method such as charging time and charging voltage and the determination condition for the end of charging differ depending on the type of the battery. For this reason, when the adapter is attached to the charger while the battery pack is loaded on the adapter as described above, the battery pack of Patent Document 1 and the battery pack loaded on the adapter of Patent Document 3 If the types are different, not only the proper charging cannot be performed, but also the battery may be damaged.

  Moreover, in what uses the adapter of patent document 3, on the outer surface of an adapter or a battery pack, one operation element for canceling | releasing a lock with an electric tool, and two operation elements for canceling | releasing a lock with a battery pack, Since there is a separate battery, the adapter or battery pack may fall off if any of the controls is operated inadvertently or in contact with surrounding members during operation (incorrect operation). There was. In particular, since the adapter is attached to and detached from the electric tool in the vertical direction, the adapter is likely to drop downward if one operating element locked on the electric tool side is erroneously operated. At this time, if the battery pack is attached to the adapter, the heavy battery pack will fall off as one body, and the battery pack and the adapter may be damaged, and the floor and surrounding members may be damaged. Therefore, it is conceivable to increase the operating force of the operating element by strengthening the return spring force provided on the operating tool of the tool side lock. Is disadvantageous.

  The present invention has been made in view of such circumstances. When an adapter is used, the battery pack is removed from the electric tool while the battery pack is mounted on the adapter, and the battery pack has the same loading method as the adapter (patent The battery charger of Document 1) cannot be charged by being charged into the dedicated charger so that the charger used is not mistaken, and the adapter falls off the electric tool against the will of the operator. It is a first object of the present invention to provide a battery pack mounting adapter for a power tool that can prevent the above. A second object is to provide an electric tool using this adapter.

  According to the present invention, a first object is a battery pack mounting adapter that is interposed between an electric power tool and a battery pack, and the electric power tool and the battery pack are detachable, wherein the electric power tool and the battery The packs are detachable by the tool side lock means and the battery side lock means, respectively, and the lock operator of the tool side lock means is disposed on the battery pack mounting surface hidden by the battery pack when the battery pack is attached. This is achieved by an adapter for a power tool, characterized in that.

  According to the present invention, a second object of the present invention is to provide a power tool having the battery pack mounting adapter according to claim 1, a tool-side locking means for locking the power tool at a position where the power tool is mounted on the adapter, and the battery pack. Battery side locking means for locking to a position where it is mounted on the adapter, tool side locking operation means for operating the tool side locking means provided on the battery pack mounting surface of the adapter, and the battery side locking which can be operated from the outside. A battery-side lock operation element for operating the means, and the tool-side lock operation element that appears on the battery pack mounting surface in a state where the battery pack is detached can be unlocked. Achieved with an electric tool with an adapter.

  According to the adapter of the first invention, the tool side lock operator for operating the tool side lock means is disposed on the battery pack mounting surface of the adapter, and the tool side lock operator is in a state where the battery pack is removed. Since the tool-side locking means of the adapter cannot be unlocked with the battery pack attached, the adapter cannot be removed from the power tool while the battery pack is loaded in this adapter. . For this reason, it is necessary to remove the battery pack from the adapter before removing the adapter from the electric tool. Therefore, even if an attempt is made to load a dedicated charger for a battery pack (battery pack of Patent Document 1) having the same charging method for the electric tool as the adapter, the battery pack is charged because the battery pack has already been removed from the adapter. I can't. For this reason, the mistake of the charger used can be prevented.

  Also, the operator (tool side lock operator) for removing the adapter from the electric tool cannot be operated with the battery pack attached, so that the adapter with the battery pack falls off the electric tool against the operator's will. Can be prevented. According to the second invention, a power tool using this adapter is obtained.

The perspective view which looked at the electric tool which is one Example of this invention from diagonally downward The perspective view which shows the state which removed the battery pack similarly The perspective view which shows the state which removed the battery pack and the adapter similarly The perspective view which expanded the IV arrow view part in FIG. An enlarged sectional view showing the tool side locking means. The perspective view which looked at the engagement groove of the battery pack and the battery side lock operation element from diagonally rear The perspective view which looked at the engagement groove of the battery pack and the battery side lock operation element from diagonally forward Cross-sectional view by plane along the engagement groove of the battery pack Similarly, the figure which shows the state which locked the adapter in FIG. Side view of adapter

  When the attachment / detachment direction of the adapter to / from the electric tool and the attachment / detachment direction of the battery pack are substantially perpendicular, it is convenient that the tool-side locking means and the battery-side locking means can be distinguished and attached during the attachment / detachment. In particular, when the attachment / detachment direction of the electric power tool is the vertical direction, the adapter is pulled down by the operation of the tool side lock operator. However, according to the present invention, the operator's intention is to keep the heavy battery pack attached. On the contrary, the operation element is not operated, and it is possible to reliably prevent the adapter with the battery pack from falling off.

  The tool-side lock means is automatically locked when the electric tool is installed, the battery-side lock means is automatically locked when the battery pack is installed, and the tool-side lock operator and battery-side lock operator are manually operated when unlocked. In this case, it is not necessary to operate the lock operator when the adapter or the battery pack is attached, and the operability is good.

  The battery-side lock operator may be provided on the battery pack side or on the adapter side, but it is preferable that the battery-side lock operator is provided on the outer surface of the battery pack so that it can be operated from the outside. In this case, not only the battery pack can be easily attached and detached, but also when this battery pack is charged using a dedicated charger, it can be loaded into this charger using the same battery side locking means and operator. This makes it possible to more reliably prevent mistakes in the charger.

  1-3, the code | symbol 10 is an electric tool, In this Example, it is an electrohydraulic clamp tool used in order to adhere a connection terminal (crimp terminal) to the terminal of an electric cable (crimping, clamping). A handle grip 14 extending downward is integrally provided on the main body 12 of the electric power tool 10, and an operator works by holding the handle grip 14 with his / her hand. A switch 16 is provided in the upper front portion of the handlebar grip 14, and an operator controls an electric motor (not shown) accommodated in the main body 12 by operating the switch 16 with a finger, and is generated by the electric motor. The pressure-bonding die is pressurized by the hydraulic pressure.

  That is, the annular portion of the connection terminal is inserted into a substantially U-shaped yoke 18 provided at the tip of the main body portion 12 while being fitted to the end of the cable, and the crimping die is pressed against the annular portion by hydraulic pressure to be crimped. . An adapter mounting portion 20 that expands in a flange shape is formed on the lower end surface of the handle grip 14, and an adapter insertion port 22 provided in the handle grip 14 is opened in the adapter mounting portion 20 (FIG. 3).

  Reference numeral 24 denotes an adapter. As shown in FIG. 3, the adapter 24 is attached to and detached from the adapter mounting portion 20 of the handle grip 14 from below. That is, on the upper surface of the adapter 24, as shown in FIG. 10, an insertion portion 26 to be inserted into the adapter insertion port 22 on the handle grip 14 side protrudes. A plurality of terminal plates (not shown) for electrical connection are attached to the outer peripheral surface of the insertion portion 26, and these terminal plates are inserted into the adapter insertion port 22 with the insertion portion 26 inserted into the adapter insertion port 22. A terminal (not shown) provided inside is contacted and electrically connected.

  The adapter 24 is attached to the handle grip 14 from below, and is automatically locked by the tool side locking means 28 (see FIG. 5) in this attached state. As shown in FIG. 5, the tool-side locking means 28 surrounds the adapter mounting portion 20 and is bent downward from the peripheral edge thereof (see FIG. 3). And a slide member 36 having a claw 34 (see FIG. 10) that is provided on the adapter 24 and engages with and disengages from the claw receiver 32. The slide member 36 is given a return behavior to the rear (opposite to the yoke portion 18) by a compression coil spring 38 accommodated in the adapter 24. Here, the slide member 36 has a sloped tip, and when the adapter 24 is mounted, it slides against the claw receptacle 32 from below, compresses the coil spring 38 and slides over the claw receptacle 32 to engage with the claw receptacle 32. . That is, the adapter 24 is automatically locked in this state (a state where the adapter 24 is inserted into the adapter insertion port 22).

  The slide member 36 passes through the adapter 24 in the vertical direction and is held by a guide (not shown) so as to be slidable in the horizontal direction (FIGS. 5 and 10). The upper portion of the slide member 36 is the claw 34, and the lower portion protrudes from the lower surface of the adapter 24, that is, the battery pack mounting surface 40. The protruding portion is a tool-side operation element 36A that can be manually operated. Accordingly, the lower end (tool side operation element 36A) of the slide member 36 is pushed with the fingertip in the left direction P (the yoke 18 direction of the main body 12 and the forward direction) in FIGS. 5 and 10 against the restoring force of the coil spring 38. Thus, if the slide member 36 is slid in the same direction, the claw 34 at the tip of the slide member 36 can be released from the claw receptacle 32 on the electric tool 10 side, and the tool side lock means 28 can be unlocked.

  A bent edge 42 is formed on the lower surface of the adapter 24 so as to extend downward from the peripheral edge excluding the front edge. A battery pack 44 is mounted on the lower surface (battery pack mounting surface 40) of the adapter 24. Horizontal guides 42a and 42a are formed on the left and right portions of the bent edge 42 (FIGS. 2 to 5). A pair of left and right horizontal engaging grooves 46, 46 are formed in the upper part of the battery pack 44 (FIGS. 6, 7), and these engaging grooves 46 engage with the guide 42 a of the adapter 24.

  That is, from the front side of the adapter 24 (from a portion that is open forward without the bent edge 42), the engaging groove 46 of the battery pack 44 is slid horizontally toward the rear side while engaging the guide 42a of the adapter 24. Engage. FIG. 8 shows a cross section of the battery pack 44 cut along a horizontal plane along the engagement groove 46, and FIG. 9 shows a state where the adapter 24 is attached thereto.

  The battery pack 44 and the adapter 24 are provided with battery side locking means 48 (FIG. 9) for locking the battery pack 44 to the adapter 24. That is, the battery-side lock means 48 includes a lock member 52 formed integrally with a pair of left and right engaging claws 50 that enter / exit into the engaging groove 46 of the battery pack 44, and a battery integrally formed with the engaging claws 50. A battery-side lock operator 54 that appears on the left and right outer surfaces of the pack 44 and a claw receiver 56 on the adapter 24 side that is formed on the guide 42a of the adapter 24 and engages and disengages the tip of the engagement claw 50 are provided. The lock member 52 is urged by a compression coil spring (not shown) in a direction in which the engagement claw 50 enters the claw receiver 56 (a direction in which the battery side lock operation element 54 protrudes and returns to the outside).

  Accordingly, when the engaging groove 46 of the battery pack 44 and the guide 42a of the adapter 24 are aligned and the battery pack 44 is pushed into the adapter 24, the engaging claw 50 hits the front edge of the guide 42a and rides on the guide 42a. When 44 is pushed in, the engaging claw 50 enters the claw receptacle 56 of the adapter 24 and is automatically locked. Further, when the battery side lock operation element 54 is pushed in from both sides, the lock member 52 integral with the operation element 54 is pushed in, and the engagement claw 50 at the tip thereof is released from the claw receiver 56. In this state, the lock is released and the battery pack 44 can be removed by sliding it forward from the adapter.

  On the upper surface of the battery pack 44, as shown in FIGS. 6 to 9, a large number of connection contact loading slits 58 opened in the loading direction of the battery pack 44 are formed. The slit 58a to be used is determined in advance depending on the type and capacity of the battery loaded in the battery pack 44, and the connection contact 60 is loaded in the slit 58a to be used (FIGS. 8 and 9). On the other hand, the battery pack mounting surface 40 of the adapter 24 is provided with a connection terminal 62 that projects into the slit 58 in which the connection contact 60 is loaded. When the battery pack 44 is attached to the adapter 24, the connection terminal 62 is connected to the battery 24. The battery enters the connection contact 60 of the pack 44 and is electrically connected.

DESCRIPTION OF SYMBOLS 10 Electric tool 12 Main body part 14 Handle grip 22 Adapter insertion port 24 Adapter 28 Tool side lock means 36A Tool side lock operation element 40 Battery pack attachment surface 42a Guide 44 Battery pack 46 Engagement groove 48 Battery side lock means 50 Engagement claw 54 Battery side lock operator 56 Claw holder

Claims (5)

A battery pack mounting adapter that is interposed between the power tool and the battery pack, and wherein the power tool and the battery pack are detachable,
The power tool and the battery pack are detachable by a tool side locking means and a battery side locking means, respectively, and the tool side locking means is locked to a battery pack mounting surface hidden by the battery pack when the battery pack is mounted. An adapter for a power tool, wherein a child is provided.   The battery pack mounting adapter according to claim 1, wherein the battery pack mounting adapter can be attached to and detached from a handle grip of the electric tool from below, and a direction in which the battery pack is attached to and detached from the adapter is substantially orthogonal to a direction in which the battery pack is attached to and detached from the grip. The power tool having the battery pack mounting adapter according to claim 1,
Tool-side locking means for locking the electric tool at a position where the adapter is mounted, battery-side locking means for locking a battery pack at the position where the adapter is mounted, and the tool disposed on the battery pack mounting surface of the adapter A tool side lock operator that operates the side lock means, and a battery side lock operator that is operable from the outside and operates the battery side lock means,
An electric tool with an adapter for mounting a battery pack, wherein the tool-side lock operator appearing on the battery pack mounting surface with the battery pack removed can be unlocked.   The tool side lock means is automatically locked when the electric tool is mounted, the battery side lock means is automatically locked when the battery pack is mounted, and the tool side lock operator and the battery side lock operator are manually operated when unlocked. Electric tool with adapter for battery pack 3   The battery-powered adapter-equipped electric tool according to claim 3, wherein the battery-side lock operator is provided on an outer surface of the battery pack and can be operated from the outside.

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