charger connection and charger

Abstract

Charger connector (16, 18; 16') comprising: a first spring (17; 78) having one end attached to a support structure (20; 62); a bend (19; 80) extending from another end of the first spring (17; 78) and bent back at an angle of 90 degrees or more; and a second spring (21; 82) having one end extending from the bend (19; 80) and another end capable of contacting the support structure (20; 62) when the first spring (17; 78) is contacted by a terminal (108) or a housing (202) of a battery pack (100, 200) to be charged.

Description

TECHNICAL AREA

[0001] The technology disclosed herein relates to a charger port and a charger. BACKGROUND

[0002] JP 2009-5517 A discloses a charger designed to charge a battery pack. This charger can charge several types of battery packs. SUMMARY

[0003] With a charger that can charge several types of battery packs, a situation arises where, when a specific type of battery pack is used, a specific charger terminal provided in the charger makes contact with a terminal on the battery pack, and when a different type of battery pack is used, this specific charger terminal makes contact with a battery pack casing. For example, a first intermediate voltage input terminal 30 a charger 10, which is disclosed in JP 2009-5517 A, in contact with a first intermediate voltage connection 244 a second battery pack 200 , if the second battery pack 200 is used and comes into contact with a housing 102 of a first battery pack 100 , when the first battery pack 100 is used.

[0004] Fig. 20 and Fig. Figure 21 shows an example of a charger connection which, as described above, comes into contact with a terminal of a battery pack or with the housing of a battery pack, depending on the type of battery pack used. A charger 300 , which in Fig. 20 and Fig. As shown in 21, it has charger connections. 302 up. As in Fig. 20 shown, will come when a first type of battery pack is introduced. 400 The charger connections are used 302 in contact with connections 402of the battery pack 400 As in Fig. 21 shown, come when a second type of battery pack 500 The charger connections are used 302 in contact with a housing 502 of the battery pack 500 . Fig. 22 and Fig. Figure 23 shows a form of a charger connection. 302 , which has been used so far. As in Fig. 20 and Fig. Shown in 21 is the charger port. 302 , who in Fig. 22 and Fig. 23 is shown, by attaching it to an upper end of a load-bearing wall 304 in the charger 300 is attached, and when the battery pack 400 or the battery pack 500 into the charger 300 When used, a section of each charger port serves as a base. 302 , which is located at the attachment point at the upper end of the load-bearing wall 304 up to a contact point with the battery pack 400or the battery pack 500 That's enough, like a feather.

[0005] At charger connections 302 , as they are in Fig. The charger connections shown in section 21 are... 302 significantly deformed when in contact with the housing 502 of the battery pack 500 come, and there is a risk of high voltage at the charger connections. 302 This has an effect that can cause plastic deformation. To avoid such plastic deformation, the shape of the charger connectors must be... 302 be changed so that the ones at the charger connectors 302 upon their contact with the housing 502 of the battery pack 500 The effective voltage is reduced. However, if the voltage at the charger terminals is reduced... 302 upon their contact with the housing 502 of the battery pack 500 The effect is reduced, resulting in a voltage at the charger terminals. 302when they come into contact with the connections 402 of the battery pack 400 appears as in Fig. Figure 20 also shows a reduction. Consequently, the contact pressure is reduced by an elastic restoring force from the charger terminals. 302 to the connections 402 of the battery pack 400 The applied voltage decreases, making it difficult to ensure an electrical connection between the terminals. A technique is needed that can guarantee contact pressure for a battery pack connection, even when the voltage present at a charger terminal is reduced.

[0006] The technology disclosed herein provides a solution to the problem mentioned above. The present disclosure provides a technology that can ensure contact pressure for a battery pack connection, even when the voltage present at a charger terminal is reduced.

[0007] A charger connector disclosed herein may comprise: a first spring having a first end attached to a support structure; a bend extending from another end of the first spring and bent back at an angle of 90 degrees or more; and a second spring having an end extending from the bend and another end capable of contacting the support structure.

[0008] With the charger connector described above, contact pressure for connecting the battery pack can be ensured even if the voltage acting on the charger connector when inserting the battery pack is reduced, because the first and second springs exert an elastic restoring force between the contact point with the battery pack and the supporting structure. Furthermore, since the bend is returned at an angle of 90 degrees or more, the charger connector can be made smaller compared to a case where the bend is returned at an angle of less than 90 degrees.

[0009] The present disclosure further discloses a charger designed for charging a battery pack. The charger has the aforementioned charger connection. In this charger, the other end of the second spring comes into contact with the support structure when the battery pack is inserted into the charger.

[0010] In the charger described above, the first and second springs of the charger connector each exert an elastic restoring force when the battery pack is inserted. This ensures that the contact pressure for connecting the battery pack is maintained, even if the voltage applied to the charger connector has decreased when the battery pack is inserted. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Fig. 1 is a perspective view showing a charger 2 and a battery pack 100 , 200 a present embodiment shows;

[0012] Fig. 2 is a perspective view showing the battery pack 100 the present embodiment shows;

[0013] Fig. Figure 3 is a perspective view showing the battery pack 200 the present embodiment shows;

[0014] Fig. 4 is a cross-sectional view showing a battery pack mount. 8 of the charger 2 the present embodiment shows;

[0015] Fig. 5 is a top view showing the battery pack mount. 8 of the charger 2 the present embodiment shows;

[0016] Fig. Figure 6 is a perspective view showing a state in which an upper casing 602 of the charger 2 the present embodiment is approved;

[0017] Fig. Figure 7 is a perspective view showing a battery box 606 of the present embodiment shown from below;

[0018] Fig. Figure 8 is a perspective view showing the distal end of a support column. 623 the present embodiment shows;

[0019] Fig. Figure 9 is a perspective view showing a state in which the upper casing602 and the battery box 606 of the charger 2 are approved for the present embodiment;

[0020] Fig. 10 is a top view showing a power cable holder 632 the present embodiment shows;

[0021] Fig. Figure 11 is a cross-sectional view that includes a status indicator. 601 the present embodiment shows;

[0022] Fig. Figure 12 is a cross-sectional view showing a state in which the battery pack 100 into the charger 2 the present embodiment is used;

[0023] Fig. Figure 13 is a cross-sectional view showing a state in which the battery pack 200 into the charger 2 the present embodiment is used;

[0024] Fig. Figure 14 is a perspective view showing an intermediate voltage detection connection. 16the present embodiment shows;

[0025] Fig. Figure 15 is a front view showing the intermediate voltage detection port. 16 the present embodiment shows;

[0026] Fig. Figure 16 is a side view showing the intermediate voltage detection connection. 16 the present embodiment shows;

[0027] Fig. Figure 17 is a top view showing the intermediate voltage detection connection. 16 the present embodiment shows;

[0028] Fig. Figure 18 is a perspective view showing an intermediate voltage detection connection. 16‘ shows one variant;

[0029] Fig. Figure 19 is a side view showing the intermediate voltage detection connection. 16‘ the variant shows;

[0030] Fig. 20 is a cross-sectional view showing a state in which a first type of battery pack 400into a known charger 300 is used;

[0031] Fig. 21 is a cross-sectional view showing a state in which a second type of battery pack is present. 500 into the familiar charger 300 is used;

[0032] Fig. 22 is a perspective view showing a known charger port. 302 shows; and

[0033] Fig. 23 is a side view showing the familiar charger port. 302 shows. DETAILED DESCRIPTION

[0034] In one or more embodiments of the aforementioned charger connector, the bend may be folded back at an angle of 180 degrees or more.

[0035] According to the configuration above, since the bend is folded back at an angle of 180 degrees or more, a charger port can be made smaller compared to a case where the bend is folded back at an angle of less than 180 degrees.

[0036] In one or more embodiments of the above-mentioned charger connector, the second spring may have a recess that is wider than the width of the first spring, and the first spring and the second spring may be designed so that they do not interfere with each other during elastic deformation of the charger connector.

[0037] If the bending angle is increased, there is a risk that the first and second springs will interfere with each other when the charger connector is elastically deformed. In the charger connector described above, interference between the second and second springs during elastic deformation can be avoided by incorporating a recess in the second spring that is larger than the width of the first spring. embodiment

[0038] A charger 2 One embodiment is described below with reference to the drawings. The in Fig. 1 charger shown 2 is for charging several types of battery packs 100 , 200 trained. (Battery pack configurations) 100 , 200 )

[0039] Fig. Figure 2 shows a first type of battery pack. 100 The first type of battery pack 100 takes up in its case102 two column-shaped battery cells (not shown), a heat sensor element (not shown), a positive terminal 104 , a negative terminal 106 , an intermediate voltage detection connection 108 and a temperature detection port 110 The two battery cells are, for example, lithium-ion battery cells. Inside the housing 102 The two battery cells are arranged parallel to each other in the housing. 102 is the negative side of a battery cell with the negative terminal 106 connected, a positive side of one battery cell is connected to a negative side of the other battery cell, and a positive side of the other battery cell is connected to the positive terminal 104 connected. That means the two battery cells are electrically connected in series between the positive terminals. 104 and the negative terminal 106switched. The intermediate voltage detection connection 108 is connected to a connection point between the positive side of one battery cell and the negative side of the other battery cell in the housing 102 connected. The temperature detection port 110 is via the heat sensor element in the housing 102 with the negative terminal 106 connected. The heat sensor element is, for example, a thermistor whose resistance value changes with temperature.

[0040] A lower part of the battery pack 100 forms an operation 112 for inserting the battery pack 100 into the charger 2 or a (not shown) power tool. Regarding the use 112 The case 102 an outer form that has an elongated columnar cross-section. Regarding its use 112 is the case 102 with a positive connection hole 114, corresponding to the positive connection 104 is intended to have a negative connection hole 116 , corresponding to the negative terminal 106 It is provided for an intermediate voltage detection connection hole 118 , corresponding to the intermediate voltage detection connection 108 is provided, and a temperature detection connection hole 120 , corresponding to the temperature detection port 110 is provided. The positive connection hole 114 and the negative connection hole 116 are located on a base surface of the housing 102 arranged. The intermediate voltage detection connection hole 118 and the temperature detection port 120 are arranged at corner sections that are defined by the base and side surfaces of the housing 102 are formed and are located at both ends of the base of the housing. 102in the longitudinal direction of the same. Furthermore, the use 112 a pair of guide ribs 122 on the side of the housing 102 provided at positions that are relative to a center of the base surface of the housing 102 in the longitudinal direction of the same are slightly offset to one side (for example to a front side).

[0041] Fig. Figure 3 shows a second type of battery pack. 200 The second type of battery pack 200 takes up in its case 202 two column-shaped battery cells (not shown), a heat sensor element (not shown), a positive terminal 204 , a negative terminal 206 and a temperature detection port 210 The two battery cells are, for example, lithium-ion battery cells. Inside the housing 202 The two battery cells are arranged parallel to each other in the housing. 202is the negative side of a battery cell with the negative terminal 206 connected, a positive side of one battery cell is connected to a negative side of the other battery cell, and a positive side of the other battery cell is connected to the positive terminal 204 connected. That means the two battery cells are electrically connected in series between the positive terminals. 204 and the negative terminal 206 switched. The temperature detection connection 210 is via the heat sensor element in the housing 202 with the negative terminal 206 connected. The heat sensor element is, for example, a thermistor whose resistance value changes with temperature.

[0042] A lower part of the battery pack 200 forms an operation 212 for inserting the battery pack 200 into the charger 2 or a (not shown) power tool. Regarding the use212 The case 202 an outer form whose cross-section has an elongated column shape. Regarding its use 212 is the case 202 with a positive connection hole 214 , corresponding to the positive connection 204 is intended to have a negative connection hole 216 , corresponding to the negative terminal 206 is provided, and a temperature detection connection hole 220 , corresponding to the temperature detection port 210 is provided. The positive connection hole 214 and the negative connection hole 216 are located on a base surface of the housing 202 arranged. The temperature detection connection hole 220 is located at a corner section that is defined by the base and a side surface of the housing 202 is formed and is located at one end of the base of the case. 202in the longitudinal direction of the same (for example, a front end). Furthermore, the following are involved in the use 212 two guide ribs 222 on the side of the housing 202 provided at positions that are relative to a center of the base surface of the housing 202 in the longitudinal direction of the same are slightly offset to one side (for example, to a front).

[0043] The first type of battery pack 100 , who in Fig. 2 is shown, and the second type of battery pack 200 , who in Fig. The three shown differ only in that the first type of battery pack is... 100 the intermediate voltage detection connection 108 and the intermediate voltage detection connection hole 118 exhibits, while the second type of battery pack 200It has no intermediate voltage detection port and no intermediate voltage detection port hole, and with respect to the other parts they have the same configurations. That is to say, the use 112 of the first type of battery pack 100 and the deployment 212 of the second type of battery pack 200 indicate the presence / absence of the intermediate voltage detection connection. 108 and the intermediate voltage detection connection hole 118 an identical shape. Positions where the positive connection 104 , the positive terminal hole 114 , the negative terminal 106 , the negative terminal hole 116 , the temperature detection port 110 , the temperature detection connection hole 120 and the pair of guiding ribs 122 in the first type of battery pack 100 are arranged, and positions where the positive connection204 , the positive terminal hole 214 , the negative terminal 206 , the negative terminal hole 216 , the temperature detection port 210 , the temperature detection connection hole 220 and the pair of guiding ribs 222 in the second type of battery pack 200 The arrangements are identical. (Charger configuration) 2 )

[0044] As in Fig. As shown in 1, the charger 2 a case 4 , a charger controller 6 (see Fig. 4, Fig. 6 and Fig. 9), which is in the housing 4 recorded, a status indicator 601 and a power cable 603 up. The case 4 features an upper casing 602 , a lower case 604 and a battery box 606 up. The upper casing 602 , the lower case 604and the battery box 606 These are components made of plastic. The housing 4 is equipped with a battery pack mount 8 , which are from the upper casing 602 and the battery box 606 is formed for inserting the battery pack 100 , 200 provided.

[0045] The battery pack mount 8 It has a cross-section with an elongated columnar and concave shape, which corresponds to the cross-sections of the inserts. 112 , 212 the battery packs 100 , 200 corresponds to an upper section. 8a the battery pack mount 8 is from the upper casing 602 formed, and a lower section 8b the battery pack mount 8 is from the battery box 606 educated. As in Fig. As shown in 6, the battery box is 606 with a surrounding wall 608provided, which differ from the lower section 8b the battery pack mount 8 extends upwards and forms an outer surface of the upper section 8a the battery pack mount 8 surrounds. The surrounding wall 608 prevents water from entering a gap between the upper section 8a and the lower section 8b the battery pack mount 8 into the case 4 occurs. As in Fig. As shown in section 4, the upper section 8a and the lower section 8b the battery pack mount 8 Each has two guide grooves 10 on, which correspond to the guide ribs 122 , 222 the battery packs 100 , 200 are provided. If the battery pack 100 or 200 in its correct alignment along a front-to-back direction into the battery pack recess 8The positions of the leading ribs are correct for the introduction of the new system. 122 or 222 and the guide grooves 10 alike, so that the battery pack 100 , 200 into the battery pack socket 8 can be used, whereby the guide ribs 122 or 222 into the guide grooves 10 occur. If the battery pack 100 or 200 in an incorrect orientation along the front-back direction into the battery pack recess 8 When deployed, the positions of the guide ribs are correct. 122 or 222 and the guide grooves 10 do not match, so the battery pack 100 , 200 not in the battery pack compartment 8 can be used.

[0046] As in Fig. 5 shown are a positive charger connection. 12 and a negative charger connector 14 on one of the bases of the battery pack holder8 , i.e., at the bottom of the battery box 606 , arranged. The positive charger connection 12 and the negative charger connection 14 are metal components and are integrally integrated with the battery box through injection molding 606 trained. The positive charger connection 12 and the negative charger connection 14 are each via lines 610 (see Fig. 6) with the charger control 6 connected. The positive charger terminal 12 and the negative charger connection 14 are a pair of rectangular, plate-like connections that extend parallel to each other, each with a positive connection step or rise. 12a and a negative connection stage or increase 14a , which are located at the bottom of the battery box 606 are intended to extend upwards. The positive connection stage 12a and the negative connection stage 14aEach has a shape that is defined by the base of the battery box. 606 It is curved upwards. Therefore, even if water accumulates at the bottom of the battery box, 606 accumulates, preventing the positive charger port from becoming clogged. 12 and the negative charger connection 14 are underwater. The positive charger connector 12 is positioned in a location adjacent to the positive terminals 104 , 204 the battery packs 100 , 200 corresponds to the negative charger connector. 14 is positioned in a location adjacent to the negative terminals 106 , 206 the battery packs 100 , 200 corresponds. If the battery pack 100 or 200 into the battery pack socket 8 When used, the positive charger connection penetrates 12 the positive connection hole 114 or 214of the corresponding battery pack 100 , 200 and comes into contact with the corresponding positive connection 104 , 204 , and the negative charger terminal 14 penetrates the negative terminal hole 116 or 216 of the corresponding battery pack 100 , 200 and comes into contact with the corresponding negative terminal 106 , 206 In this way, an electrical connection is established between the positive charger terminal and the positive terminal. 12 and the positive connection 104 or 204 established, and an electrical connection is made between the negative charger terminal 14 and the negative connection 106 or 206 manufactured. As in Fig. 4 and Fig. Shown in section 5 is the bottom of the battery box. 606 with a stopper 612 provided with which a bottom surface of the housing 102 or 202comes into contact when the battery pack 100 or 200 is used. The stopper 612 has a shape that extends from the bottom of the battery box 606 is curved upwards. Therefore, even if the bottom of the battery box is curved, it can... 606 Water accumulates, preventing the positive connection from becoming congested. 104 , 204 , the negative terminal 106 , 206 , the intermediate voltage detection connection 108 , the temperature detection port 110 , 210 of the installed battery pack 100 , 200 are underwater.

[0047] As in Fig. As shown in section 4, it is located at the bottom of the battery box. 606 There is a water outlet hole on one of the rear sides. 616 intended to be used in conjunction with a water outlet pipe 614 stands. As in Fig. As shown in section 7, the water outlet pipe 614a cross-section that has the shape of an essentially elongated rectangular tube. Reinforcing ribs 614a are on a side surface of the water outlet pipe 614 The water outlet pipe is planned. 614 extends from a lower surface of the battery box 606 downwards. As in Fig. As shown in section 6, the water outlet pipe penetrates 614 in a state where the battery box 606 on the lower case 604 It is appropriate to have a water outlet pipe through-hole. 618 , that on the charger control 6 is intended to, and comes into contact with an upper surface of the lower housing. 604 As in Fig. As shown in section 4, this is the lower case. 604 with a water outlet hole 620 equipped. In the state in which the battery box 606 on the lower case 604 The water outlet hole is attached. 616of the battery box 606 through the water outlet pipe 614 in connection with the water outlet hole 620 of the lower case 604 If water gets into the battery pack compartment 8 When water enters, it flows from the water outlet hole. 616 into the water outlet pipe 614 and is carried out through the water outlet hole 620 to the exterior of the charger 2 omitted. It should be noted that there is a surrounding wall. 622 , which is the outside of the water outlet pipe 614 surrounds when the battery box 606 on the lower case 604 is attached to the upper surface of the lower housing 604 is planned. The surrounding wall 622 prevents water from escaping from a gap between the water outlet pipe 614 and the upper surface of the lower housing 604 into the case 4 enters.

[0048] As in Fig. Figure 4 shows an intermediate voltage detection connection. 16 and a temperature detection port 18 in the battery pack holder 8 planned. As in Fig. Figure 6 shows the intermediate voltage detection connection. 16 and the temperature detection port 18 each via the lines 610 with the charger control 6 connected. The intermediate voltage detection connection 16 and the temperature detection port 18 are each by being attached to an upper end of a load-bearing wall 20 , which are in the battery box 606 It is provided for, attached. The intermediate voltage detection connection 16 is located in a position adjacent to the intermediate voltage detection terminal 108 of the battery pack 100 corresponds to the temperature detection port. 18 is located in a position that is adjacent to the temperature detection ports 110 ,210 the battery packs 100 , 200 corresponds.

[0049] As in Fig. As shown in 7, there are two support columns. 623 on a front lower section of the battery box 606 planned. The two supporting columns 623 They have a round column shape and extend from the lower surface of the battery box. 606 downwards. Each supporting column 632 The pair is reinforced with reinforcing ribs. 624 and press-fit ribs 625 provided (see Fig. 8). As in Fig. As shown in 9, the lower casing 604 two mounting levels or risers 626 on, which are intended for positions that correspond to the two supporting columns 623 correspond. The two fastening levels 626 They have a circular tube shape and extend from the upper surface of the lower casing. 604 upwards. The two fastening levels 626penetrate fastening step through holes 628 , which are connected to the charger control 6 are planned. As in Fig. 6 shown, when the battery box 606 on the lower case 604 It is attached to the distal ends of the two support columns. 623 into the two fastening stages 626 in a state in which a lower end of the water outlet pipe 614 with the water outlet hole 620 is aligned into the two fastening stages 626 introduced, and the battery box 606 is pressed in until the reinforcing ribs 624 in contact with the fastening steps 626 This will cause the press-fit ribs to come. 625 at the distal ends of the two support columns 623 (see Fig. 8) deformed, and the distal ends of the two supporting columns 623 are divided into the two fastening stages 626Press-fit. Due to the press fit of the distal ends of the two support columns. 623 into the two fastening stages 626 can prevent the battery box from 606 due to the stiffness of the line 610 is shifted upwards. Furthermore, the small press-fit ribs enable a press fit. 625 The load required for the press fit can be reduced.

[0050] As in Fig. Shown in 1 is the power cable 603 through a power cable entry hole 630 , which is on the upper casing 602 and the lower case 604 is intended to be placed in the housing 4 introduced. As in Fig. As shown in 6, the power cable is 603 with the charger control 6 connected and supplies the charger 2 with performance. As in Fig. 6 and Fig. Shown in 9 is a power cable holder. 632near the cable entry hole 630 of the lower case 604 provided. The power cable holder 632 a guide wall 634 on, which the power cable 603 It holds, while being caused to bend. The guide wall 634 extends from the upper surface of the lower casing 604 Upwards. By holding the power cable 603 in the power cable holder 632 will be applied to a connection section between the power cable 603 and the charger control 6 no load was applied, even though the power cable 603 is pulled outwards. Furthermore, as in Fig. 10 shows part of the lower casing 604 , where the power cable holder 632 It is designed to have two water outlet holes. 636 Provided. Thus, even if water leaks from the power cable entry hole, 630from which the water enters through the water outlet holes 636 of the power cable holder 632 omitted to the outside.

[0051] Fig. Figure 11 shows a cross-section of the condition indicator 601 The status indicator 601 displays the charger's status 2 by light emission pattern of a first LED (light-emitting diode) 638 and a second LED 640 , which are connected to the charger control 6 are intended. For example, the charger 2 in the present embodiment the first LED 638 one red LED, and the second LED 640 It's a green LED. For example, on the charger 2 the present embodiment in a state in which the charger 2 through the power cable 603 is supplied with power and none of the battery packs 100 , 200 into the battery pack socket 8is in use, i.e., when the charger is 2 In standby mode, the first LED 638 switched off, and the second LED 640 blinks. When the battery pack 100 or 200 into the battery pack socket 8 is used and the charger 2 charging the battery pack 100 , 200 When it starts, the first LED will 638 switched on, and the second LED 640 will be switched off. If there is a certain amount of charge in the battery pack 100 , 200 exceeds 80% while the charger 2 the battery pack 100 , 200 charging, the first LED will light up 638 switched on, and the second LED 640 will be switched on. When the charger 2 charging the battery pack 100 , 200 upon completion, the first LED will light up. 638 switched off, and the second LED 640is switched on. It should be noted that the light emission patterns of the first LED 638 and the second LED 640 The previously described patterns are merely examples, and other light emission patterns indicate the states of the charger. 2 can display.

[0052] Regarding the status indicator 601 is the upper case 602 with two light guide holes 642 and 644 equipped with each of the first LED 638 and the second LED 640 correspond to a sealing groove. 648 , on which a ring-shaped sealing component 646 , for example an O-ring, can be arranged at each of the light guide holes 642 and 644 near a surface of the upper casing 602 Provided: A ring-shaped press-fit rib. 650 is on an inner surface of each of the light guide holes 642 and 644It is provided in the middle position in an up-down direction. Furthermore, the status indicator 601 a lens 652 on the upper casing 602 attached. The lens 652 It consists of a translucent material. The lens 652 It features two round, column-shaped sections. 654 and 656 , each of which corresponds to the two light guide holes 642 and 644 correspond, and a flat plate section 658 to connect the upper ends of the two round, column-shaped sections 654 , 656 up. If the lens 652 on the upper casing 602 When it is attached, the round, column-shaped sections are 654 , 656 the lens 652 in a state in which the sealing components 646 on the sealing grooves 648 are arranged in the light guide holes 642 , 644 introduced, and the lens 652is pressed in until the flat plate section 658 in contact with the surface of the upper housing 602 This will result in the press-fit ribs. 650 on the inner surfaces of the light guide holes 642 , 644 deformed, and the round, columnar sections 654 , 656 are inserted into the light guide holes 642 , 644 Press-fit. Because of the round, column-shaped sections 654 , 656 into the light guide holes 642 , 644 Being press-fitted can prevent the lens from... 652 is shifted upwards. Furthermore, the small press-fit ribs enable a press fit. 650 The load required for a press fit can be reduced. It should be noted that the lower housing 602 with a light-blocking wall 660 is equipped with, which is located between the first LED 638 and the second LED 640extends downwards. The light-blocking wall 660 prevents the light from the first LED 638 into the round, column-shaped section 656 , which goes into the light guide hole 644 is introduced, occurs, and furthermore prevents the light from the second LED 640 into the round, column-shaped section 654 , which goes into the light guide hole 642 is introduced, occurs.

[0053] Fig. 12 shows a state in which the battery pack 100 into the battery pack socket 8 is used. In this case, the intermediate voltage detection connection is used. 16 by coming into contact with the intermediate voltage detection terminal 108 through the intermediate voltage detection connection hole 118 Elastically deformed. Contact pressure against the intermediate voltage detection terminal. 108 is achieved through an elastic restoring force of the intermediate voltage detection connection.16 This ensures an electrical connection between the intermediate voltage detection terminal and the intermediate voltage detection terminal. 16 and the intermediate voltage detection connection 108 manufactured. Furthermore, the temperature detection connection is 18 by coming into contact with the temperature detection port 110 through the temperature detection port 120 Elastically deformed. Contact pressure against the temperature detection port. 110 is achieved through an elastic restoring force of the temperature detection port 18 This ensures an electrical connection between the temperature detection port and the temperature detection port. 18 and the temperature detection port 110 manufactured.

[0054] Fig. 13 shows a state in which the battery pack 200 into the battery pack socket 8 is used. In this case, the intermediate voltage detection connection is used.16 by coming into contact with a corner section of the housing 202 elastically deformed. Furthermore, the temperature detection connection 18 by coming into contact with the temperature detection port 210 through the temperature detection port 220 Elastically deformed. Contact pressure against the temperature detection port. 210 is caused by the elastic restoring force of the temperature detection port 18 This ensures an electrical connection between the temperature detection port and the temperature detection port. 18 and the temperature detection port 210 manufactured. (Configuration of the intermediate voltage detection port) 16 and the temperature detection port 18 )

[0055] Regarding the charger 2 In the present embodiment, the intermediate voltage detection connection 16and the temperature detection port 18 an identical configuration. Therefore, the intermediate voltage detection connection is described below. 16 described in detail, and an explanation of the temperature detection connection 18 will be omitted.

[0056] As in Fig. 14 to Fig. As shown in Figure 17, the intermediate voltage detection connection 16 a connecting section 30 , a carrying section 32 , a first curved section 34 , a first straight section 36 , a second curved section 38 , a second straight section 40 , a third curved section 42 , a third straight section 44 , a fourth curved section 46 , a wider section 48 , a fifth curved section 50 , a fork section 52 , a sixth curved section54 and a seventh curved section 56 The intermediate voltage detection connection 16 is produced by processing a sheet of metal.

[0057] The connecting section 30 is connected to one of the lines 610 from the charger control 6 connected (see Fig. 6) The connecting section 30 has an upper end that is connected to a flat plate section 32a of the support section 32 is connected.

[0058] The support section 32 exhibits a pair of flat plate sections 32a , 32b , which extend parallel to each other, and a connecting section 32c , the upper ends of the two flat plate sections 32a , 32b connects them, on. The supporting section 32 has a shape that corresponds to the upper end of its corresponding supporting wall 20 of the battery box606 fits.

[0059] A lower end of the flat, plate-like section 32b of the support section 32 is connected to the upper end of the first straight section 36 over the first curved section 34 connected. The first curved section 34 is bent in such a way that it deviates from the supporting wall 20 Viewed from the outside, it protrudes inwards or curves inwards away from the load-bearing wall. An angle formed by the first straight section 36 regarding the flat, plate-like section 32b The temperature it develops is, for example, 155 to 165 degrees, preferably between 159 and 161 degrees.

[0060] A lower end of the first straight section 36 is over the second curved section 38 with an upper end of the second straight section 40 connected. The second curved section 38 is bent into a shape that allows it to detach from the supporting wall 20From a perspective view, it protrudes inwards. An angle formed by the second straight section 40 regarding the first even section 36 The angle it forms is, for example, 135 to 145 degrees, preferably between 139 and 141 degrees. Step sections 40a are on the second straight section 40 on both sides at positions near a center in its longitudinal direction. A stiffness of the second straight section. 40 is increased by the stage sections 40a are provided for, and this can cause a deformation of the second straight section. 40 be suppressed.

[0061] A lower end of the second straight section 40 is over the third curved section 42 with an upper end of the third straight section 44 connected. The third curved section 42 is bent in such a way that it is separated from the supporting wall 20From the outside, it protrudes or curves outwards towards the load-bearing wall. An angle formed by the third straight section 44 regarding the second even section 40 The temperature it develops is, for example, 55 degrees to 65 degrees, preferably between 59 degrees and 61 degrees.

[0062] A lower end of the third straight section 44 is over the fourth curved section 46 with a lower end of the widened section 48 connected. The fourth curved section 46 is bent into a shape that allows it to move away from the supporting wall 20 when viewed from below, it protrudes downwards or curves upwards. An angle formed by the widened section 48 regarding the third even section 44 The temperature it forms is, for example, 115 degrees to 125 degrees, preferably 119 degrees to 121 degrees. The widened section 48It has a shape whose width increases from the bottom end to its top end.

[0063] The upper end of the widened section 48 is over the fifth curved section 50 with a lower end of the fork section 52 connected. The fifth curved section 50 is bent into a shape that allows it to move away from the supporting wall 20 It is curved inwards when viewed from the outside. An upper end of the fork section. 52 is in a right fork section 52a and a left fork section 52b branched. The width of a gap or recess between the right fork section. 52a and the left fork section 52b is wider than the width of the first straight section 36 , of the second curved section 38 and the second even section 40 .

[0064] The upper end of the right fork section 52ais connected to the lower end of the sixth curved section 54 connected. An upper end of the left fork section 52b is connected to the lower end of the seventh curved section 56 connected. The sixth curved section 54 and the seventh curved section 56 are bent into a shape that allows them to move away from the load-bearing wall 20 They protrude inwards when viewed from the outside or are curved inwards away from it. The sixth curved section 54 and the seventh curved section 56 can come into contact with the load-bearing wall 20 come when the intermediate voltage detection connection 16 is elastically deformed. The width of a gap between the sixth bent section 54 and the seventh curved section 56 is wider than the width of the first straight section 36 , of the second curved section 38 and the second even section40 .

[0065] The intermediate voltage detection connection 16 can be viewed as him being a first feather 17 , a bend or a curved section 19 and a second spring 21 exhibits. The first spring 17 is from the support section 32 , the first curved section 34 , the first even section 36 , the second curved section 38 and the second straight section 40 formed. The bend 19 is formed by the third curved section 42 , the third even section 44 and the fourth curved section 46 formed. The second spring 21 is from the widened section 48 , the fifth curved section 50 , the fork section 52 , the sixth curved section 54 and the seventh curved section 56formed. The first feather 17 has one end that is attached to the load-bearing wall 20 It is attached, forming a supporting structure or load-bearing assembly. The bending 19 extends from the other end of the first spring 17 and is bent back at an angle of 90 degrees or more, more precisely, at an angle of 180 degrees or more. In other words, the bend 19 is regarding the first spring 17 (more precisely, the second even section) 40 ) bent back or around at an angle of 90 degrees or more, for example 180 degrees or more, towards the supporting structure, so that the second spring 21 (more precisely, the widened section) 48 ) at this angle to the first spring 17 (i.e., the one with the bend) 19 The second spring extends to the connected section of the same. 21 has an end that extends from the bend 19extends, and its other end is designed in such a way that it is able to support the load-bearing wall 20 to contact.

[0066] If the battery pack 100 is used (see Fig. 12), the intermediate voltage detection connection 16 elastically deformed by the second straight section 40 in contact with the intermediate voltage detection terminal 108 comes, and thus comes the sixth curved section 54 and the seventh curved section 56 in contact with the load-bearing wall 20 In this case, the first spring exerts [the force]. 17 between the contact point with the battery pack 100 and the load-bearing wall 20 an elastic restoring force, and the second spring 21 It also exerts an elastic restoring force. Thus, even if one is connected to the intermediate voltage detection terminal, it exerts this force. 16 The effective tension is reduced, the first spring 17and the second spring 21 each has its elastic restoring force between the contact point with the battery pack 100 and the load-bearing wall 20 off, so that the contact pressure for the battery pack 100 against the intermediate voltage detection connection 108 can be ensured.

[0067] Furthermore, if the battery pack 200 is used (see Fig. 13), the intermediate voltage detection connection 16 elastically deformed by the second straight section 40 in contact with the corner section of the housing 202 comes, and thus comes the sixth curved section 54 and the seventh curved section 56 in contact with the load-bearing wall 20 In this case too, the first spring exerts its influence. 17 their elastic restoring force, and the second spring 21 It also exerts its elastic restoring force between the contact point with the battery pack200 and the load-bearing wall 20 out of.

[0068] At the intermediate voltage detection connection 16 In the present embodiment, the bending 19 bent back at an angle of 90 degrees or more. If the bend 19 If it were designed so that it is bent back at an angle of less than 90 degrees, a position where the second spring 21 in contact with the load-bearing wall 20 comes, lie further down, and a size of the intermediate voltage detection connection 16 The bending would increase in the top-bottom direction. This occurs as the bending develops. 19 such that it is bent back at an angle of 90 degrees or more, as with the intermediate voltage detection connection 16 In the present embodiment, the intermediate voltage detection connection 16 be reduced in size.

[0069] In particular, the intermediate voltage detection connection16 in the present embodiment the bending 19 bent back at an angle of 180 degrees or more. This configuration allows for a larger size of the intermediate voltage detection port. 16 in the top-bottom direction compared to a case where the bending 19 It can be further reduced in size if it is bent back at an angle of less than 180 degrees.

[0070] At the intermediate voltage detection connection 16 In the present embodiment, the second spring 21 a recess or gap is provided which is larger than the width of the first spring 17 This can prevent the first spring from... 17 and the second spring 21 Interference occurs when the intermediate voltage detection connection 16 elastically deformed.

[0071] It should be noted that the intermediate voltage detection connection 16(and the temperature detection port) 18 ) can have a form that is in Fig. 18 and Fig. 19 is shown. In one in Fig. 18 and Fig. The example shown in 19 is the intermediate voltage detection connection. 16 (and the temperature detection port) 18 ) directly through the charger control 6 supported, instead of by the load-bearing wall 20 to be worn.

[0072] An intermediate voltage detection connection 16‘ , who in Fig. 18 and Fig. As shown in 19, there is a connecting section 60 , a carrying section 62 , a first curved section 64 , a first straight section 66 , a second curved section 68 , a second straight section 70 , a third curved section 72 , a third straight section 74 and a fourth curved section 76 on.

[0073] The connecting section 60 is on an upper surface of the charger control 6 attached and electrically connected to it. One end of the connecting section 60 is connected to a lower end of the support section 62 tied together.

[0074] The support section 62 extends to the upper surface of the charger control 6 vertically upwards. An upper end of the supporting section. 62 is connected to the upper end of the first straight section 66 over the first curved section 64 connected. The first curved section 64 is bent into a shape that is separated from the supporting section 62 when viewed from above, it protrudes upwards or is bent downwards. An angle formed by the first straight section 66 regarding the load-bearing section 62The temperature it develops is, for example, between 20 degrees and 30 degrees, preferably between 24 degrees and 26 degrees.

[0075] A lower end of the first straight section 66 is over the second curved section 68 with an upper end of the second straight section 70 connected. The second curved section 68 is bent into a shape that is separated from the supporting section 62 protrudes or curves outwards when viewed from the outside. An angle formed by the second straight section 70 regarding the first even section 66 The temperature it develops is, for example, between 125 degrees and 135 degrees, preferably between 129 degrees and 131 degrees.

[0076] A lower end of the second straight section 70 is over the third curved section 72 with a lower end of the third straight section 74 connected. The third curved section 72is bent into a shape that is separated from the supporting section 62 from the perspective, it protrudes downwards or is bent upwards. An angle formed by the third straight section 74 regarding the second even section 70 The temperature it develops is, for example, 45 degrees to 55 degrees, preferably 49 degrees to 51 degrees.

[0077] An upper end of the third straight section 74 is connected to the lower end of the fourth curved section 76 connected. The fourth curved section 76 is bent into a shape that is separated from the supporting section 62 Protrudes inwards when viewed from the outside. The fourth curved section 76 can come into contact with the load-bearing section 62 This occurs when the intermediate voltage detection connection 16‘ elastically deformed.

[0078] The in Fig. 18 and Fig. 19 Intermediate voltage detection connection shown 16‘It can also be seen as him being a first feather 78 , a bend 80 and a second spring 82 exhibits. The first spring 78 is formed by the first curved section 64 , the first even section 66 , the second curved section 68 and the second straight section 70 formed. The bend 80 is formed by the third curved section 72 formed. The second spring 82 is from the third straight section 74 and the fourth curved section 76 formed. The first feather 78 has one end that is attached to the support section 62 It is attached, which is a supporting structure. The bending 80 extends from the other end of the first spring 78 and is bent back at an angle of 90 degrees or more, more precisely, at an angle of 180 degrees or more. The second spring 82has an end that extends from the bend 80 extends, and the other end of the same is designed in such a way that it is able to support the load-bearing section 62 to contact.

[0079] If the battery pack 100 is used (see Fig. 12), the intermediate voltage detection connection 16‘ , who in Fig. 18 and Fig. As shown in 19, it is elastically deformed by the second curved section 68 in contact with the intermediate voltage detection terminal 108 comes, and the fourth curved section 76 This brings it into contact with the supporting section 62 In this case, the first spring exerts [the force]. 78 an elastic restoring force, and the second spring 82 It also exerts an elastic restoring force between the contact point with the battery pack 100 and the carrying section 62out. Thus, practice, even if one is connected to the intermediate voltage detection port. 16‘ The effective tension is reduced, the first spring 78 and the second spring 82 each has its elastic restoring force between the contact point with the battery pack 100 and the carrying section 62 out, so that the contact pressure of the battery pack 100 against the intermediate voltage detection connection 108 can be ensured.

[0080] Furthermore, it deforms when the battery pack 200 is used (see Fig. 13), the intermediate voltage detection connection 16‘ , who in Fig. 18 and Fig. As shown in 19, elastic by the second curved section 68 in contact with the corner section of the housing 202 comes, and that's how the fourth curved section comes about. 76 in contact with the supporting section 62 In this case too, the first spring exerts its influence.78 the elastic restoring force, and the second spring 82 It also exerts the elastic restoring force between the contact point with the battery pack. 200 and the carrying section 62 out of.

[0081] It should be noted that the above embodiment describes the configuration in which the charger 2 the battery packs 100 , 200 can charge the charger 2 However, it can be designed to charge a different charging destination than a battery pack.

[0082] Although specific examples of the present disclosure have been described above, these examples serve only for illustration and do not limit the scope of the claims. The technology described herein also includes various changes and modifications that can be made to the examples described above. The technical elements disclosed herein can be used independently of one another or in various combinations, and the present disclosure is not limited to the combinations described above. The examples presented can solve several problems simultaneously, and the solution of even one of these problems can have a technical benefit.

[0083] It is explicitly emphasized that all features disclosed in the description and / or the claims are to be considered separate and independent of one another for the purposes of the original disclosure as well as for the purpose of limiting the claimed invention, irrespective of the combinations of features in the embodiments and / or the claims. It is explicitly stated that all range specifications or specifications of groups of units disclose every possible intermediate value or subgroup of units for the purposes of the original disclosure as well as for the purpose of limiting the claimed invention, in particular also as a boundary of a range specification. QUOTES INCLUDED IN THE DESCRIPTION

[0084] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0085] JP 2009-5517 A [0002, 0003]

Claims

[1] Charger connection ( 16 , 18 ; 16‘ ) with: a first spring ( 17 ; 78 ), which has an end that is attached to a supporting structure ( 20 ; 62 ) is attached; a bend ( 19 ; 80 ), which extends from another end of the first spring ( 17 ; 78 ) extends and is bent back at an angle of 90 degrees or more; and a second spring ( 21 ; 82 ), which has an end that extends from the bend ( 19 ; 80 ) extends, and another end capable of supporting the load-bearing structure ( 20 ; 62 ) to contact, indicates. [2] Charger connector according to claim 1, wherein the bend ( 19 ; 80 ) is bent back at an angle of 180 degrees or more. [3] Charger connection according to claim 2, wherein the second spring ( 21) has a recess that is wider than the width of the first spring ( 19 ) is, and the first spring ( 19 ) and the second spring ( 21 ) are designed so that they can be separated from each other in the event of elastic deformation of the charger connection ( 16 , 18 ) do not disturb. [4] Charger connection according to one of claims 1 to 3, wherein the first spring ( 17 ; 78 ) at the other end a first straight section ( 40 ; 70 ) shows, the second spring at one end a second section ( 48 ; 74 ) exhibits, and the second section ( 48 ; 74 ) with respect to the first even section ( 40 ; 70 ) is bent back at an angle of 90 degrees or more. [5] Charger connection according to claim 4, wherein the second section ( 74 ) is a straight section. [6] charger ( 2 ) to charge a battery pack ( 100 , 200 ), with: a charger port ( 16 , 18 ; 16‘ ) according to one of claims 1–5, where the other end of the second spring ( 21 ; 82 ) in contact with the supporting structure ( 20 ; 62 ) comes when the battery pack ( 100 , 200 ) into the charger ( 2 ) is used.