JP5283476B2 - Pack battery - Google Patents

Description

  The present invention mainly relates to a battery pack connected as an external battery to an electronic device such as a laptop computer, and more particularly to a battery pack capable of preventing adverse effects due to static electricity.

  An electronic device such as a laptop computer may hang up due to the influence of static electricity or may fail due to insulation breakdown of an embedded electronic component. Since static electricity is an extremely high voltage, it becomes a signal that disturbs the operation of the digital circuit, and also causes breakdown of high input impedance elements such as FETs. When the battery pack is connected so as to be detachable from the electronic device, it may adversely affect the electronic device due to the influence of static electricity. For example, when a user who is charged with static electricity attaches / detaches a battery pack to / from an electronic device, the static electricity charged to the user adversely affects the electronic device via the battery pack. This state is likely to occur when the user moves on a plastic floor or the like where the user is easily charged with static electricity while the air is dry. The static electricity charged to the user becomes an extremely high voltage, which adversely affects the electronic circuit built in the battery pack, and may also adversely affect the electronic equipment connecting the same. This problem can be solved by discharging static electricity charged by the user to the ground, for example. However, in various usage environments, it is extremely difficult for a user to operate an electronic device by discharging static electricity charged to the user.

By the way, a structure for discharging static electricity to the earth line has been developed in order to prevent harmful effects caused by static electricity. (See Patent Documents 1 and 2)
Patent Document 1 describes a battery pack in which a conductive layer such as a metal foil is provided on the surface of a case and connected to an earth line. This battery pack can discharge high-voltage static electricity input to the conductive layer to the ground line. However, this structure has a drawback that it is necessary to provide a conductive layer such as a metal foil on the surface of the case in order to discharge static electricity, which takes time for manufacturing and increases the manufacturing cost. In addition, this battery pack has a drawback that it cannot prevent the adverse effects of static electricity when the metal foil is peeled off from the case and the conductive layer is removed.

Patent Document 2 describes an antistatic mechanism for an ink ribbon cartridge. This antistatic mechanism discharges static electricity by bringing a reciprocating ink ribbon cartridge into contact with a metal plate connected to a ground line. This structure can discharge static electricity generated inside an electronic device such as a printer. However, this structure cannot prevent various adverse effects due to static electricity when a user who is charged with static electricity attaches the battery pack to the electronic device.
JP 2007-323909 A JP-A-5-85025

  The present invention has been developed for the purpose of solving the above drawbacks. An important object of the present invention is to provide a battery pack in which a charging user can attach and detach the battery pack to an electronic device to prevent adverse effects due to static electricity while simplifying a structure for discharging static electricity and reducing manufacturing costs. There is.

Means for Solving the Problems and Effects of the Invention

  The battery pack of the present invention includes a rechargeable battery 2, a circuit board 19 connected to the battery 2, and a case 1 containing the circuit board 19 and the battery 2. Removably connected. The case 1 includes a lever 7 having an operation portion 7A for attaching and detaching an electronic device 9 to be connected, and an elastic body 21 for biasing the lever 7. The lever 7 is connected to the case 1 so as to be able to rotate between an attachment / detachment position for attaching / detaching the electronic device 9 and a return position, and an elastic body 21 biases the lever 7 from the attachment / detachment position to the return position. Further, the case 1 is provided with a contact 51 that contacts the lever 7 held at the return position by the elastic body 21 and a discharge line 52 that connects the contact 51 to the earth line of the circuit board 19. The battery pack discharges the static electricity supplied to the lever 7 at the return position to the ground line of the circuit board 19 through the contact 51 and the discharge line 52.

  The battery packs described above can reduce the manufacturing cost by simplifying the structure for discharging static electricity, and the charged user can operate the lever to attach and detach the electronic device, thereby preventing adverse effects caused by the static electricity of the electronic device. There is. In particular, in the above battery pack, a contact is brought into contact with a lever held at a return position by an elastic body, and the contact is connected to an earth line through a discharge line to discharge static electricity. This structure ensures that the lever contacts the contact with an elastic body. Since the contact is connected to the earth line via the discharge line, the contact that reliably contacts the lever discharges the high-voltage static electricity supplied from the lever to the earth line with the discharge line. In particular, when the user attaches / detaches the battery pack to / from the electronic device, the user first contacts the lever at the return position. Therefore, the static electricity charged to the user is surely discharged while the user first contacts the battery pack. Therefore, even if a user who is charged with high voltage attaches or detaches the battery pack to or from an electronic device, the user's static electricity is surely discharged to the ground line first, and malfunction or failure of the electronic circuit or electronic device in the battery pack due to static electricity is prevented. Can be prevented.

  In the battery pack of the present invention, the lever 7 can be made of metal. A battery pack made of a metal lever can reliably discharge static electricity charged to the user with the metal lever while making the lever sufficiently strong.

  Further, in the battery pack of the present invention, the case 1 can be made of plastic and the lever 7 can be made of metal. In this battery pack, static electricity charged to the user can be reliably discharged with a metal lever while the case is formed of insulating plastic. Although the battery pack can be connected to the ground line as a metal case to prevent adverse effects due to static electricity, the metal case is disadvantageous in that it is heavy and expensive to manufacture. The plastic case has no electrical conductivity for discharging static electricity in the case itself. For this reason, circuit boards built in plastic cases and electronic devices that connect battery packs can cause high-voltage static electricity that is charged to the user to spark inside the battery pack via various discharge paths, or to connect battery packs. The inside of the electronic equipment that sparks will cause adverse effects such as backup and failure. However, in the above battery pack, a metal lever is provided on a plastic case, the metal lever is brought into contact with the contact at the return position, and the contact is connected to the ground line through a discharge line. For this reason, the static electricity charged to the user is quickly discharged to the earth line through the contact point and the discharge line from the metal lever that is easily contacted and energized. Therefore, the user's static electricity can be quickly discharged through the metal lever while the case is made of plastic, and adverse effects due to the static electricity can be prevented.

The battery pack of the present invention can be a metal plate 50 in which the contacts 51 and the discharge lines 52 are fixed inside the case 1.
The above battery packs have metal plates fixed and contacts and discharge lines in the case, so the contacts and discharge lines are securely fixed at fixed positions in the case, and the contacts are stabilized at the lever in the return position. Can be touched to discharge static electricity.

The battery pack of the present invention can be connected to the forced detachment mechanism 3 that forcibly separates the electronic device 9 by rotating the operating portion 7A of the lever 7 from the return position to the detachment position.
The battery pack described above can prevent adverse effects due to static electricity by reliably discharging static electricity through the lever when the lever is operated and detached from the electronic device.

  In the battery pack of the present invention, the lever 7 can be connected to the side surface of the case 1 so that the lever 7 can be rotated in a horizontal plane.

  In the battery pack of the present invention, the lever 7 is connected to the case 1 so that the lever 7 can be rotated via the rotating shaft 16, and one end is connected to the arm 7B to operate the other end. An arch portion 7C connected to the portion 7A can be provided. The lever 7 is provided with a guide slit 37 centered on the rotating shaft 16 in the arch portion 7C, and guides a guide pin 38 fixed to the case 1 so as to slide on the guide slit 37. In the return position of 7, the contact point 51 can be arranged at a position in contact with the arm portion 7B.

  Embodiments of the present invention will be described below with reference to the drawings. However, the example shown below illustrates the battery pack for embodying the technical idea of the present invention, and the present invention does not specify the battery pack as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The battery pack shown in FIGS. 1 to 4 is provided in a case 1 containing a rechargeable battery 2 and a circuit board 19, and a laptop microcomputer as an electronic device 9 (the outline of the outline is shown by a dotted line in FIG. 1). A forced detachment mechanism 3 for forcibly detaching is provided. In the battery pack shown in the figure, an output connector 35 connected to the electronic device 9 is provided on the upper surface of the case 1 so as to protrude. The output connector 35 is fixed to the circuit board 19 and protrudes from the upper surface of the case 1. The battery pack is connected to the electronic device 9 to supply power by connecting the output connector 35 to an input connector (not shown) of the electronic device 9.

  The case 1 is made of plastic, and an upper case 1B is connected to a lower case 1A, and a plurality of batteries 2 and a forced detachment mechanism 3 are built therein. 3 shows a perspective view with the upper case 1B removed, and FIG. 4 shows an exploded perspective view with the upper case 1B removed. Further, FIGS. 5 to 7 show enlarged perspective views of a portion where the forced detachment mechanism 3 is provided.

[battery]
The battery 2 is a thin rectangular battery that can be charged. The square battery is a lithium ion battery. The illustrated battery pack stores 3 × 4 batteries 2 side by side in a horizontal plane. The battery pack using the battery 2 as a lithium ion battery can increase the charge capacity while reducing the outer shape. However, in place of the lithium ion battery, any battery that can be charged such as a lithium polymer battery, a nickel hydrogen battery, or a nickel cadmium battery can be used as the battery. In addition, a battery pack using a thin rectangular battery can be thinned as a whole. However, since a cylindrical battery can be used as the battery, the external shape of the battery is not specified as a thin rectangular battery.

[Circuit board]
The circuit board 19 is mounted with an electronic component such as FET or ASIC that realizes a protection circuit for the built-in battery 2. The protection circuit mounted on the circuit board 19 detects the voltage and current of each battery 2 and charges and discharges the battery 2 while preventing overcharge and overdischarge of the battery 2. Moreover, the temperature of the battery 2 is detected, and charging / discharging is controlled so that the battery temperature falls within the set temperature range. The electronic circuit mounted on the circuit board 19 operates using the built-in battery 2 as a power source. Therefore, the circuit board 19 is a printed circuit board, and is provided with a ground line and a power line connected to the battery 2 and a conductive line in contact with the electronic component. The circuit board 19 is fixed to the case 1 via a set screw 36. The circuit board 19 is fitted with a fitting structure provided in the case 1 and fixed in place. However, the circuit board can be fixed at a fixed position of the case by various structures, such as being bonded and fixed at a fixed position of the case, or sandwiched between upper and lower cases and fixed at a fixed position.

[Forced desorption mechanism]
FIGS. 1 and 5 show a state where the forced detachment mechanism 3 connects the battery pack to the electronic device 9. The lever 7 is housed on the side surface of the case 1 when the battery packs are connected. Therefore, the lower case 1 </ b> A is provided with a recess on the side surface, which is a storage portion 17 that stores the lever 7. The state in which the battery pack is removed from the electronic device 9 is shown in FIGS. The lever 7 is rotated from a return position where the operation portion 7A is along the side surface of the case 1 to a detachment position where the lever 7 is pulled out of the case 1 and separated from the electronic device 9. The lever 7 is made of metal, and the whole is made of an aluminum alloy or a magnesium alloy. The lever 7 is connected to the side surface of the lower case 1A via the rotation shaft 16 so that the lever 7 can be rotated in a horizontal plane. The lever 7 shown in the figure has an arm portion 7B connected to the case 1 so as to be rotatable via a rotating shaft 16, and one end portion is connected to the arm portion 7B and the other end portion is connected to the operation portion 7A. And an arch portion 7C. The arm portion 7 </ b> B has a shape that is bent in a square shape, and the bent portion is connected to the lower case 1 </ b> A by the rotation shaft 16. The arch portion 7 </ b> C is provided with a guide slit 37 centered on the rotation shaft 16. Guide pins 38 fixed to the case 1 are guided so as to slide in the guide slits 37. A guide pin 38 shown in FIG. 4 is a boss that is integrally formed perpendicularly to the lower case 1A. The outer diameter of the boss is made smaller than the inner width of the guide slit 37 so that the guide pin 38 can slide on the guide slit 37. It is arranged. A set screw 40 is screwed into the tip of the boss via a washer 39. The outer diameter of the washer 39 inserted into the set screw 40 is made larger than the inner width of the guide slit 37, and the guide pin 38 is arched. The guide is guided so as not to come out of the guide slit 37 of the portion 7C. The lever 7 having this structure prevents the lever 7 from shifting up and down at the arch portion 7C. Therefore, the lever 7 can be pivoted so as not to be displaced up and down within the horizontal plane. However, the guide pin can be fixed to the lower case as a set screw. The guide pin, which is a set screw, has an outer diameter of the shaft portion smaller than the inner width of the guide slit, and the outer diameter of the screw head or the washer inserted into the screw head is larger than the inner width of the guide slit. It can guide so that it may not come out to the guide slit of a part.

  The lever 7 discharges the input high-voltage static electricity to the ground line of the circuit board 19 at the return position. Therefore, a contact 51 that contacts the lever 7 at the return position is arranged on the case 1. In the case 1 of FIGS. 6 and 7, a contact 51 is disposed at a position where it contacts the arm portion 7 </ b> B of the lever 7. The contact 51 is connected to the ground line of the circuit board 19 through the discharge line 52. The contact 51 and the discharge line 52 are configured by a single metal plate 50 as shown in FIGS. The metal plate 50 has one end connected to the ground line of the circuit board 19 and the other end provided with a contact 51. The metal plate 50 is formed as an elastic contact 51A that can be elastically deformed by bending the tip portion upward. The elastic contact 51A is arranged at the front in the direction of moving from the detachment position to the return position so as to contact the arm portion 7B of the lever 7 at the return position. The elastic contact 51 </ b> A is disposed so as to come into contact with the lever 7 by being elastically deformed by being pushed by the arm portion 7 </ b> B of the lever 7. As will be described in detail later, the lever 7 is pressed by the slide base 20 that is moved by being urged by the elastic body 21 and is held at the return position. Therefore, the elastic body 21 that urges the lever 7 from the attachment / detachment position to the return position via the slide base 20 is elastic to deform the elastic contact 51A and arrange the lever 7 at the return position, that is, the elastic body 21 is the lever. The elastic force that moves 7 toward the return position is made stronger than the elastic force by which the elastic contact 51A elastically presses the arm portion 7B. In this structure, the lever 7 can be arranged at the return position with the elastic body 21 while the elastic contact 51A is elastically brought into contact with the arm portion 7B of the lever 7. However, the elastic body can also hold the lever in the return position by directly urging the lever without going through the slide base.

  The metal plate 50 is provided with a plurality of through holes 53 into which the fixing ribs 41 formed integrally with the lower case 1A are inserted. The metal plate 50 in which the contact rib 51 and the discharge line 52 are integrally provided by inserting the fixing rib 41 into the through hole 53 is fixed at a fixed position of the lower case 1A. The metal plate 50 in FIGS. 5 to 8 has a tip 50A provided with an elastic contact 51A at the tip below the lever 7 so as not to hinder the rotation of the arch 7C and arm 7B of the lever 7. ing. The front end portion 50A of the metal plate 50 is shaped to be connected to a connection portion 50C connected to the ground line of the circuit board 19 by a rising portion 50B disposed outside the lever 7. The connecting portion 50C is connected to the ground line of the circuit board 19 by soldering.

  When the lever 7 is in the return position, the arm portion 7B is brought into contact with the contact 51 of the metal plate 50. The contact 51 is connected to the ground line of the circuit board 19 through the discharge line 52. Therefore, the high-voltage static electricity input to the operating portion 7A of the lever 7 is quickly discharged to the ground line of the circuit board 19 through the contact 51 and the discharge line 52, that is, through the metal plate 50.

  The lever 7 rotated to the return position and the detachment position causes the ejector 4 to protrude from the case 1 as indicated by an arrow A in FIG. The protruding ejector 4 pushes the bottom surface of the electronic device 9 to forcibly separate the battery pack from the electronic device 9. Furthermore, the forcible detachment mechanism 3 shown in the figure is provided with a locking hook 30 for connecting the battery pack to the electronic device 9 in the connected state. As shown in FIG. 5, the locking hook 30 protrudes from the case 1 toward the electronic device 9 and is locked to a locking portion (not shown) provided on the bottom surface of the electronic device 9 in the connected state. Then, the battery pack is connected to the electronic device 9. The battery pack of FIGS. 1, 2, 5, and 6 has a hook cover 42 that houses the locking hook 30 protruding from the upper surface of the upper case 1B, and is locked inside the hook cover 42. A hook 30 is arranged. The locking hook 30 is arranged so that the hook part 32 at the front end enters and exits the opening part of the hook cover 42. The battery pack is connected to the electronic device 9 by engaging the hook portion 32 of the locking hook 30 protruding from the opening of the hook cover 42 with a locking portion (not shown) of the electronic device 9. Further, in the battery pack, when the lever 7 is rotated, the locking hook 30 moves as indicated by an arrow B in FIG. 3, and the locked state with the locking portion of the electronic device 9 is released. This battery pack can be reliably connected to the electronic device 9 by the locking hook 30.

  The forced detachment mechanism 3 for forcibly detaching the battery pack from the electronic device 9 by performing the above operation can move toward the electronic device 9 and can reciprocate between the pushing position and the connecting position of the electronic device 9. Are connected to the ejector 4, the coil spring 5 is elastically pressing the ejector 4 toward the connection position, and is provided inside the coil spring 5 so as to protrude from the inner surface of the case 1. A spring guide 6 in which the coil spring 5 is disposed at a fixed position of the case 1 and a push-out mechanism 8 which is connected to a lever 7 provided in the case 1 and moves the ejector 4 from the connected position to the push-out position. .

[Ejector]
A state where the ejector 4 is connected to the case 1 is shown in FIGS. However, these drawings are shown upside down from the actual use state in order to facilitate understanding of the structure of the ejector 4. The ejector 4 shown in these figures is connected to the upper case 1B so as to be able to reciprocate in the vertical direction, that is, between the connecting position and the detaching position. Further, the ejector 4 is provided with a first locking stopper 11 and a second locking stopper 12 at both ends of the columnar portion 10 in order to limit the reciprocating range. The ejector 4 is provided with a first locking stopper 11 and a second locking stopper 12 which are integrally molded in a plastic molding step. The first locking stopper 11 is provided at an end portion on the surface side of the upper case 1B, and the second locking stopper 12 is provided at an end portion on the inner surface side. In the illustrated ejector 4, the first locking stopper 11 is molded into a plate shape having a rectangular outer shape, and the second locking stopper 12 is molded into a shape in which the rod protrudes on both sides of the end portion. Yes.

  The first locking stopper 11 is fitted into a fitting recess 13 provided in the upper case 1B, and is disposed on the same surface as the surface of the upper case 1B at the connection position. The upper case 1 </ b> B is provided with a through hole 14 on the bottom surface of the fitting recess 13 that can move the columnar portion 10 of the ejector 4 up and down. The through-hole 14 has a shape that allows the columnar portion 10 of the ejector 4 to pass therethrough and does not allow the first locking stopper 11 to pass through, ie, the outer shape of the first locking stopper 11. In a state where the battery pack is connected to the electronic device 9, the ejector 4 is urged by the coil spring 5 to place the first locking stopper 11 in the fitting recess 13.

  The second locking stopper 12 locks the coil spring 5 so as not to come out, and the ejector 4 is arranged at the coupling position with the coil spring 5. Therefore, the second locking stopper 12 is a rod that protrudes to a length that can lock the coil spring 5.

[coil spring]
The coil spring 5 is a push spring and elastically presses the ejector 4 via the second locking stopper 12 and is arranged at the connection position. That is, the coil spring 5 arranges the ejector 4 that is not pushed by the pushing mechanism 8 at the connection position. The coil spring 5 is between the inner surface of the upper case 1B and the second locking stopper 12 and elastically presses the second locking stopper 12. The coil spring 5 elastically pushes down the second locking stopper 12 to place the ejector 4 at the connection position.

[Spring guide]
The spring guide 6 is integrally formed on the plastic upper case 1B. The spring guide 6 is disposed inside the coil spring 5 and outside the columnar portion 10 of the ejector 4. That is, the spring guide 6 is disposed between the coil spring 5 and the columnar portion 10 of the ejector 4. The spring guide 6 is located inside the coil spring 5 and is disposed at a fixed position so that the coil spring 5 can be expanded and contracted. Therefore, the outer shape of the spring guide 6 is made smaller than the inner diameter of the coil spring 5. The spring guide 6 is composed of a plurality of ribs 6A protruding from the inner surface of the lower case 1A. The spring guide 6 shown in the figure is composed of four ribs 6A that are disposed in parallel to each other at the corners of a quadrangle. The spring guide 6 guides the second locking stopper 12 between the ribs 6A, and moves the ejector 4 from the coupling position to the detaching position. Therefore, the interval between the slits 15 provided between the adjacent ribs 6 </ b> A is set to a width that can pass through the rod of the second locking stopper 12.

[Extrusion mechanism]
When the lever 7 is rotated so that the lever 7 is pulled out from the case 1 and pushed by the arm portion 7B of the lever 7, the ejector 4 protrudes from the upper surface of the upper case 1B, that is, from the coupling position to the pushing position. It moves and forcibly separates the battery pack from the electronic device 9. The push-out mechanism 8 shown in the figure includes a slide base 20 that is pushed and reciprocated by the arm portion 7B of the lever 7 and an elastic body 21 that is a tension spring that pulls the slide base 20.

  As shown in FIGS. 3 to 7, the slide table 20 is built in so as to reciprocate on the side surface of the lower case 1A. The lower case 1A is integrally formed with a guide rib 22 that reciprocates the slide table 20 so as to protrude from the inner surface. One end of the slide table 20 is provided with a storage recess 23 for storing an elastic body 21 that is a tension spring. The elastic body 21 disposed in the storage recess 23 moves the slide base 20 in a direction in which the slide base 20 is pressed against the arm portion 7B of the lever 7. The slide table 20 elastically presses the arm portion 7B of the lever 7, and stores the lever 7 in the recess that is the storage portion 17 of the lower case 1A. The pressing surface 24 on which the slide base 20 presses the arm portion 7B of the lever 7 is configured to be parallel to the arm portion 7B in a state where the lever 7 is stored in the storage portion 17.

  As shown in FIGS. 4 to 6, the slide table 20 is provided with an inclined rib 25 that projects the ejector 4 to the pushing position so as to protrude from the upper surface. The inclined ribs 25 are integrally formed on the plastic slide table 20. Further, the inclined rib 25 is disposed at a position where the ejector 4 can be pushed up. Since the battery pack shown in the figure is provided with two ejectors 4, inclined ribs 25 are provided below the respective ejectors 4. The inclined rib 25 is formed in a shape in which the upper edge is inclined so that the height changes in the reciprocating direction. By operating the lever 7, the slide table 20 and the inclined rib 25 reciprocate, and the inclined rib 25 and the bottom portion 4 </ b> A of the injector 4 come into contact with each other and slide. When moved to the position, the ejector 4 is pushed up (see FIG. 6), and when the slide base 20 returns to the connected position, the ejector 4 is arranged at a position where the ejector 4 is not pushed up (see FIG. 5). That is, the inclined rib 25 is provided so as to extend in the reciprocating direction of the slide table 20 and has a shape in which the upper edge is inclined so as to push up the ejector 4 at the pushing position and not push up the ejector 4 at the connecting position.

  Further, as shown in the partially enlarged perspective view of FIG. 4, the slide table 20 is integrally formed with a slide rib 26 that moves the locking hook 30 to the locking position and the detaching position. The slide rib 26 protrudes from the upper surface of the slide table 20 and is inclined so as to reciprocate to move the locking hook 30 in the direction indicated by the arrow B in FIG. The locking hook 30 is connected to the inner surface of the lower case 1A through the cover plate 27 shown in FIG. 3 so as to be able to reciprocate in the direction indicated by the arrow B in FIG. The cover plate 27 opens a slit 28 that penetrates the locking hook 30, and is provided with a guide groove 29 for reciprocating the locking hook 30 on the inner surface as shown in FIG. 13. Thus, the locking hook 30 is reciprocated.

  The locking hook 30 is formed in a shape that connects the hook portion 32 to the base plate 31 that reciprocates along the guide groove 29 of the cover plate 27. The hook portion 32 is integrally formed with plastic as a shape protruding vertically from the base plate 31. As shown in the bottom perspective view of FIG. 13, the base plate 31 is provided with a drive portion 33 that protrudes from the lower surface so as to contact the slide rib 26 (shown by a chain line in the drawing) of the slide table 20. Further, the base plate 31 of the locking hook 30 is connected to the cover plate 27 via a pressing spring 34. When the slide base 20 is moved to the pushing position, the above-described locking hook 30 moves in the direction indicated by the arrow A in FIG. 13 while the slide rib 26 slides on the surface of the drive unit 33 of the base plate 31. At this time, the drive unit 33 of the base plate 31 is pressed by the slide rib 26 and moves in the direction indicated by the arrow B in the figure. In this state, the locking hook 30 moves as indicated by an arrow B in FIG. 3, and the locking state with the locking portion of the electronic device is released. When the slide table 20 returns to the coupling position, the slide rib 26 moves in the direction opposite to the arrow A in FIG. 13, the base plate 31 is pressed by the pressing spring 34, and the locking hook 30 is aligned with the arrow B in FIG. 13. Move in the opposite direction. In this state, the locking hook 30 returns to the connection position, and the locking portion of the electronic device can be locked.

  In the above battery pack, when the lever 7 is disposed at the connecting position in FIG. 1, the slide base 20 is not moved by the arm portion 7B as shown in FIG. The slide table 20 in this position does not push up the ejector 4 with the inclined rib 25, and the slide rib 26 of the slide table 20 does not press the drive portion 33 of the lock hook 30, so that the lock hook 30 is moved to the electronic device. 9 is disposed at the locking position. As shown in FIG. 2, when the lever 7 is rotated to a position where it is pulled out from the side surface of the case 1, as shown in FIG. 6, the arm portion 7B of the lever 7 pushes the slide base 20 to move to the detaching position. In the slide table 20 that moves to the detaching position, the inclined rib 25 pushes up the ejector 4 and moves the ejector 4 to the pushing position. The ejector 4 pushed out to the pushing position pushes up the electronic device 9 from the bottom surface and forcibly separates it from the battery pack. Further, the slide rib 26 of the slide base 20 moves the driving portion 33 of the locking hook 30 to release the locking state of the locking hook 30. Therefore, when the lever 7 is pulled out from the case 1, the battery pack is forcibly separated from the electronic device 9.

1 is a perspective view of a battery pack according to an embodiment of the present invention. It is a perspective view which shows the state which removes the battery pack shown in FIG. 1 from an electronic device. It is the perspective view which removed the upper case of the battery pack shown in FIG. FIG. 4 is a partially enlarged exploded perspective view of the battery pack shown in FIG. 3. It is a partial cross section perspective view which shows the forced detachment | desorption mechanism of the state which connects a battery pack with an electronic device. It is a partial cross section perspective view which shows the forced detachment | desorption mechanism of the state which removes a pack battery from an electronic device. It is a perspective view which shows the discharge line of the battery pack shown in FIG. It is a perspective view of a metal plate. It is a partially expanded perspective view of an upper case. It is a disassembled perspective view which shows the connection structure of the ejector of the upper case shown in FIG. It is an expansion disassembled perspective view which shows the connection structure of an upper case and an ejector. It is an expansion perspective view which shows the connection structure of an upper case and an ejector. It is a bottom perspective view of a locking hook.

Explanation of symbols

1 ... Case 1A ... Lower case
DESCRIPTION OF SYMBOLS 1B ... Upper case 2 ... Battery 3 ... Forced removal | desorption mechanism 4 ... Ejector 4A ... Bottom part 5 ... Coil spring 6 ... Spring guide 6A ... Rib 7 ... Lever 7A ... Operation part
7B ... Arm
7C ... Arch part 8 ... Extrusion mechanism 9 ... Electronic equipment 10 ... Columnar part 11 ... First locking stopper 12 ... Second locking stopper 13 ... Insertion recess 14 ... Through hole 15 ... Slit 16 ... Rotating shaft 17 ... Storage part 19 ... Circuit board 20 ... Slide base 21 ... Elastic body 22 ... Guide rib 23 ... Storage recess 24 ... Pressing surface 25 ... Inclined rib 26 ... Slide rib 27 ... Cover plate 28 ... Slit 29 ... Guide groove 30 ... Locking hook 31 ... Base plate 32 ... Hook part 33 ... Drive part 34 ... Pressing spring 35 ... Output connector 36 ... Set screw 37 ... Guide slit 38 ... Guide pin 39 ... Washer 40 ... Set screw 41 ... Fixing rib 42 ... Hook cover 50 ... Metal plate 50A ... tip
50B ... Rising part
50C: Connection 51: Contact 51A: Elastic contact 52 ... Discharge line 53 ... Through hole

Claims (7)

A battery (2) that can be charged, a circuit board (19) connected to the battery (2), and a case (1) containing the circuit board (19) and the battery (2) are provided. A battery pack detachably connected to the device (9),
The case (1) includes a lever (7) having an operation part (7A) for attaching and detaching an electronic device (9) to be connected, and an elastic body (21) for biasing the lever (7),
The lever (7) is connected to the case (1) so that the lever (7) can be rotated to a removal position and a return position where the electronic device (9) is removed, and the elastic body (21) returns the lever (7) from the removal position. Biased to position,
Further, the case (1) includes a contact (51) that contacts the lever (7) held at the return position by the elastic body (21), and the contact (51) is connected to the ground line of the circuit board (19). And a discharge line (52) connected to the
A battery pack in which static electricity supplied to the lever (7) in the return position is discharged to the ground line of the circuit board (19) through the contact (51) and the discharge line (52).   The battery pack according to claim 1, wherein the lever (7) is made of metal.   The battery pack according to claim 1, wherein the case (1) is made of plastic and the lever (7) is made of metal.   The battery pack according to claim 1, wherein the contact (51) and the discharge line (52) are a metal plate (50) fixed inside the case (1).   The lever (7) is connected to a forcible detachment mechanism (3) forcibly separating the electronic device (9) by rotating the operating portion (7A) from the return position to the detachment position. The battery pack described.   The battery pack according to claim 1, wherein the lever (7) is connected to a side surface of the case (1) so as to be rotatable in a horizontal plane.   The lever (7) is connected to the case (1) so that the lever (7) can be rotated via the rotating shaft (16), and one end is connected to the arm (7B) and the other. And an arch part (7C) formed by connecting the end part to the operation part (7A), and the arch part (7C) has a guide slit (37) centering on the rotating shaft (16). Guide pins (38) fixed to the case (1) so as to slide on (37) are guided, and at the return position of the lever (7), the guide pins (38) come into contact with the arm portion (7B). The battery pack according to claim 1, wherein the contact (51) is arranged.

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