CN202817808U - Charger - Google Patents

Abstract

The utility model provides a charger which is free from influence of electric wire resistance and highly reliable. The charger comprises a charging circuit, a swing block, an adapter and a shell. Metal electric conduction shafts extend out from the two ends of the swing block; the inner ends of two metal electric conduction shafts are respectively in electrical connection with two output electrodes arranged on the swing block and the outer ends of the two metal electric conduction shafts are disposed in two clamping grooves in the shell; the two output electrodes are matched with two contacts on the adapter respectively; and two elastic arms electrically connected with positive and negative output ends of the charging circuit elastically press cylindrical surfaces on the outer ends of the two metal electric conduction shafts respectively. During charging, the adapter enables the two contacts to press the output electrodes correspondingly by the action of the gravity of a product to be charged and thus charging current from the charging circuit is delivered to the product to be charged through electric transmission wires, the elastic arms, the metal electric conduction shafts, the output electrodes, the contacts on the adapter and a charging plug for charging a rechargeable battery; and in this period, the swing block swings with the metal electric conduction shafts serving as the axis and the metal electric conduction shafts are limited in the clamping grooves and rotate along with the swing of the swing block.

Description

Charger

Technical field

The utility model relates to a kind of charger, and it is used for the digital products such as mobile phone are charged.

Background technology

A kind of digital product charger of 200910037223.4 application number is disclosed in the Chinese patent on July 29th, 2009 bulletin is, it can make between the product to be charged of different model can share same charger, and product to be charged can be placed in the charger easily, comprise charging circuit and shell, comprise that also the lower end is provided with the conversion head that two contacts, upper ends are provided with charging plug, the positive and negative output electrode that the setting of centering block in being articulated in shell is electrically connected with charging circuit, shell front side stretches out forward guide vane end stop; After during use conversion head being inserted product to be charged, be placed on together on the shell again, utilize centering block, guide vane end stop, shell or supply socket or wall namely product to be charged can be stabilized in the shell, make two contacts on the conversion head under Action of Gravity Field reliably with centering block on two plate electrode sheets contact and realize treating charge prepd and charge.Adopt electric wire to be connected between the positive and negative output electrode in this patent application on the positive-negative output end of charging circuit and the centering block, electric wire is connected an end along with centering block swings with positive and negative output electrode, and electric wire connection charging circuit one end is fixed, so the swing of centering block is subject to the drag effects of electric wire, if the position that electric wire is laid in the enclosure in the installation process of charger is not right, then cause easily centering block not swing, thereby two electrode slices can not be contacted with two contacts of conversion head, reliability is low.

Summary of the invention

The purpose of this utility model is that a kind of electric wire drag effects, charger that reliability is high of not being subjected to is provided in order to solve the low problem of reliability that exists in the above-mentioned existing charger.

The purpose of this utility model is achieved in that a kind of charger, comprise charging circuit, centering block, conversion head and shell, described conversion head lower end is provided with two contacts, the upper end is provided with the charging plug that the charging jack with product to be charged matches, the metal guide electric axis is stretched out respectively at described centering block two ends, described two strip metal conductive shaft the inners respectively be arranged on described centering block on two output electrodes be electrically connected, the outer end lays respectively in two draw-in grooves of described shell, described two output electrodes respectively with described conversion head on two contacts match, two elastic arms that are electrically connected with the positive-negative output end of described charging circuit suppress respectively the residence and state the face of cylinder of two strip metal conductive shaft outer ends (being that described metal guide electric axis is cylindrical).During charging, the charging plug of described conversion head upper end is inserted in the charging jack of product to be charged and put into together again charger, conversion head makes two to touch the described output electrode of pushing down respectively correspondence under Action of Gravity Field, centering block is till swinging to two described output electrodes and described two contacts contact with described two contacts under product to be charged and the conversion head Action of Gravity Field, thereby the charging current in the future on the self-charging circuit is through the transmission of electricity electric wire, described elastic arm, the metal guide electric axis, output electrode, contact on the conversion head, charging plug is delivered in the product to be charged and is charged to rechargeable battery; Centering block swings take described metal guide electric axis as axle therebetween, and the metal guide electric axis is limited in rotating with the swing of described centering block in the described draw-in groove.

Described elastic arm is cartridge clip, and two elastic arms of this cartridge clip are clamped corresponding described metal guide electric axis or are clipped in respectively between the corresponding described metal guide electric axis and described shell.

Described shell is made of face-piece and drain pan, described centering block is arranged in the described face-piece, described elastic arm is positioned at corresponding described metal guide electric axis below and the front and back end is supported by two boss on the described face-piece respectively, and described drain pan is provided with and stretches into that the upside of pushing down described metal guide electric axis in the described face-piece makes described elastic arm distortion and the block wing that produces elastic force.

Described output electrode is provided with the elbow of pushing down corresponding described metal guide electric axis the inner.

Described output electrode is the conjoined structure that is become by a strip metal cylinder bending with corresponding described metal guide electric axis.

Be electrically connected by electric wire between described output electrode and corresponding metal guide electric axis the inner.

Owing to adopted technical scheme described in the utility model, charging current is delivered to the metal guide electric axis at centering block two ends by the elastic arm of strain, when swinging, centering block only need overcome the frictional force between elastic arm and the metal guide electric axis, and because the diameter of metal guide electric axis less (can less than 2mm), and in the centering block output electrode to the distance of the central axis of metal guide electric axis large (can greater than 4mm), it is the arm of force less (less than 1mm) of the frictional force between elastic arm and the metal guide electric axis, and the arm of force of the contact on the conversion head when depressing output electrode large (greater than 4mm), it is minimum that elastic arm and metal guide electric axis are its coefficient of friction between the two of metal material in addition, and the pressure that elastic arm is pushed down the metal guide electric axis generally can not surpass 20g, but all surpass 100g the weight of product to be charged (such as mobile phone), so centering block very smoothly, can improve the reliability of charger greatly when being subject to mobile phone weight effect lower swing; The charging electric wire of drawing from charging circuit only is connected with elastic arm, and centering block no longer directly is connected with electric wire, and elastic arm is actionless, thus when mounted the interior charged electrical string pendulum of shell to put randomness higher, improved production efficiency.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the three-dimensional exploded view of charger embodiment one described in the utility model.

Fig. 2 is the stereo decomposing enlarged drawing of centering block assembly among Fig. 1 embodiment.

Fig. 3 is the orthographic projection vertical view after each assembly installs among Fig. 2.

Fig. 4 is the left view after Fig. 3 dissects centering block along center line.

The relative position schematic diagram of cartridge clip and centering block assembly among Fig. 5 Fig. 1 embodiment.

Fig. 6 excises the stereogram of rear another angle with the face-piece fraction after the centering block assembly among Fig. 1 is installed in face-piece.

Fig. 7 is the partial enlarged drawing of A part among Fig. 6.

Fig. 8 is the schematic diagram of the metal guide electric axis in the corresponding diagram 7 when being clamped by cartridge clip.

Fig. 9 is the stereogram that the face-piece among Fig. 1 has been installed another angle behind centering block and the cartridge clip.

Figure 10 is the use state diagram when charging of mobile phone that a pair of charging jack of embodiment is positioned at the bottom side.

Figure 11 is the schematic diagram of one or two of the embodiment card wing when being inserted in another position of charger case.

Figure 12 is the three-dimensional enlarged diagram of the metal guide electric axis of use among the utility model embodiment two.

Figure 13 is the schematic perspective view with the matching used centering block of Figure 12.

Figure 14 is the use state reference map when putting into mobile phone to be charged in Figure 11.

Figure 15 is the schematic perspective view of the centering block assembly of use among the described embodiment two of Figure 12.

Figure 16 is the stereo decomposing enlarged drawing of the centering block assembly of the utility model example three uses.

Figure 17 is the schematic diagram after the metal guide electric axis among Figure 16 is placed into centering block.

Figure 18 is the stereogram after each assembly is installed together among Figure 16.

Figure 19 is the structural representation of the utility model embodiment four.

Figure 20 is the structural representation of the utility model embodiment five.

Figure 21 is the perspective exploded view of the centering block assembly of the utility model embodiment six uses.

Figure 22 is the stereogram that each assembly is combined the back part direction among Figure 21.

Figure 23 is that Figure 22 is along the profile of the center line of metal guide electric axis.

Among the figure 71, Zuo Kayi, 72, right wedging wing, 6, conversion head, 61, charging plug, 62, contact, 1, centering block, 21,22, the metal guide electric axis, 31,32, output electrode, 5, face-piece, 51, vacant chamber, 52,53,54, dovetail groove, 81,82, cartridge clip, 9, drain pan, 91,92, block wing, 90, wiring board; 11, slotted eye, 12, the support portion, 13, stopper slot, 14, arc shaped wing, 211,221, clubfoot, 311,321, elbow; 800, draw-in groove, 41,42, mobile phone, B21, metal guide electric axis, B210, spacing breach, B1, centering block, B11, axis hole; A1, centering block, A11, A12, axis hole, A111, A121, location hole, A112, A122, position-limited wing, A21, A22, output electrode, A210, A220, metal guide electric axis, A31, A32, chock; 081, cartridge clip, 05, face-piece, 50,500, boss, 60, elastic arm; C1, centering block, C11, C12, through hole.

Embodiment

Embodiment one, sees Fig. 1, and this charger comprises wiring board 90, centering block 1, the conversion head 6 with charging circuit and the shell that is made of drain pan 9 and face-piece 5, and main being fit to charges to mobile phone.

See Fig. 2, it is the stereo decomposing enlarged drawing of centering block assembly among Fig. 1, it is by centering block 1, two strip metal conductive shafts 21 and 22, article two, output electrode 31 and 32 consists of, wherein the outer end of metal guide electric axis 21 passes outwards through slotted eye 11 through centering block 1 central authorities and stretches out, the support portion 12 of centering block is pushed down in the inner of metal guide electric axis, clubfoot 211 is stuck in the stopper slot 13, in like manner another metal guide electric axis 22 usefulness Same Ways are installed in the centering block other end (because two strip metal conductive shafts are to be installed in symmetrically on the centering block basically, so the method that only is installed on the centering block with a strip metal conductive shaft wherein describes) herein, and two output electrodes 31 and 32 are installed in respectively the centering block both sides, wherein the elbow 311 and 321 on the output electrode 31 and 32 relies on respectively the inner that the elastic force of its strain pushes down metal guide electric axis 21 and 22 as shown in Figure 3 and Figure 4, stopper slot 13 on the centering block blocks the clubfoot of metal guide electric axis to an axially position-limiting action of metal guide electric axis, can certainly utilize clubfoot 211 on the metal guide electric axis to push down output electrode 31 inboards plays the effect of electrical connection and (sees Fig. 3, even this moment, the elbow 311 on the output electrode did not exist, as long as but make clubfoot 211 push down output electrode 31 inboards can to make that the metal guide electric axis is inner to be electrically connected with output electrode).In addition metal guide electric axis 21 inner with output electrode 31 between also can be connected with wire, specifically the wire two ends respectively and output electrode 31 inner with metal guide electric axis 21 weld, this connected mode also can be used as another embodiment.

Return Fig. 1, the centering block 1 that metal guide electric axis and output electrode are installed is put into the vacant chamber 51 of face-piece 5, the metal guide electric axis 21 and 22 that makes the outer end stretch out the centering block two ends falls into the draw-in groove 800 interior (referring to Fig. 6 and Fig. 7) of Fig. 7 face-piece, then respectively cartridge clip 81 and 82 through holes through the face-piece bottom are stretched in the vacant chamber 51, the metal guide electric axis 21 that two elastic arms of cartridge clip 81 and 82 is clamped stretch out the centering block two ends and 22 outer end (referring to Fig. 8), and two cartridge clips 81 and 82 are electrically connected with the output of charging circuit on electric wire and the wiring board respectively, at last wiring board 90 are put into cavity between drain pan 9 and the face-piece 5 and drain pan and face-piece are interfixed get final product; In addition, the charging plug 61 of conversion head 6 upper ends is with product to be charged---the charging jack such as mobile phone matches, and two contacts 62 of lower end match with two output electrodes 31 and 32 that are installed on the centering block respectively, the wall that the face-piece rear side protrudes upward is provided with some dovetail grooves 52,53,54, the left card wing 72 and right wedging wing 71 backs are respectively equipped with orthogonal two dovetail muscle and (only see the horizontal dovetail muscle at left right wedging wing back among the figure, in fact also be respectively equipped with vertical dovetail muscle), wherein each dovetail muscle can insert respectively on the dovetail groove corresponding on the face-piece, make the relative position difference between the left right wedging wing and adapt to different big or small products to be charged, this is a kind of known technology (discloses application number be on 08 24th, 2011 Chinese patents bulletin 201110124833.5 patented technology in), is not described further at this.

Seeing Fig. 5, is after each parts is installed together among Fig. 1, the schematic diagram when two strip metal conductive shafts 21 in the vacant chamber of face-piece in the centering block and 22 outer end are clamped by the cartridge clip 82 and 81 of correspondence respectively.

State is seen respectively Figure 10, Figure 11 and Figure 14 during a pair of cell-phone charging of embodiment, because the course of action when using between conversion head and centering block and the output electrode thereof is prior art, can in the Chinese patent bulletin, retrieve, and the patent No. of mentioning in the background technology in the utility model is also to be described in detail in 200910037223.4 the patent announcement, so do not repeat them here.

Two block wings 91 among Fig. 1 embodiment on the drain pan and 92 stretch into the highest order that the arc shaped wing top that is positioned at the centering block two ends in the vacant chamber 51 of face-piece can be used for limiting centering block and move, and fly out in vacant chamber to prevent centering block.

Embodiment two, metal guide electric axis among Fig. 1 embodiment also can adopt the described rectilinear structure of Figure 12 (the metal guide electric axis that is about among Fig. 1 is used structure formation embodiment two shown in Figure 12 instead), as shown in figure 12, the elbow 311 that output electrode 31 among spacing breach B210 and Fig. 2 is set in metal guide electric axis B21 stage casing matches, be that elbow 311 utilizes the strain of output electrode to push down B210 in the breach among Figure 12 to axially the playing the role of positioning of metal guide electric axis B21, what other part can be with embodiment one is identical.Certainly, embodiment two also can use the structure of centering block B1 shown in Figure 13, and the circular axis hole B11 that metal guide electric axis B21 wears centering block B1 two ends stretches out the centering block two ends, and as shown in figure 15, its principle is identical with embodiment one, does not repeat them here.

Embodiment three, centering block assembly (centering block among Fig. 1 embodiment, metal guide electric axis and output electrode) also can adopt structure shown in Figure 16 (be about to centering block assembly among Fig. 1 use structure shown in Figure 16 instead namely consist of embodiment three), its metal guide electric axis A210 and output electrode A21 form integral structure with the bending of a circular metal bar, in like manner metal guide electric axis A220 and output electrode A22 are too, during installation, after output electrode A22 left end being passed the location hole A121 in centering block A1 left side, the axis hole A12 that makes again metal guide electric axis A220 pass centering block right side central authorities is positioned at limiting card wing A122 downside (as shown in figure 17) to the linkage section between metal guide electric axis A220 and the output electrode A22, chock A32 firmly being filled in centering block has linkage section between the A22 to be limited in limiting card wing A122 downside on metal guide electric axis A220 and output bakelite can not to deviate from again, as shown in figure 18, in like manner another output electrode A21 also adopts to use the same method and is installed in the centering block, does not repeat them here; Other parts in the present embodiment are identical with embodiment's one, and use principle is also identical.

Embodiment four, see Figure 19, present embodiment identical (be about to cartridge clip among Fig. 1 adopt as the cartridge clip 081 among Figure 19 namely consist of embodiment four) of other part and embodiment one except cartridge clip, with Figure 19 as can be known difference of present embodiment and embodiment one of comparing with Fig. 8, two elastic arms folders of the cartridge clip 081 among Figure 19 are clipped in respectively between metal guide electric axis 22 and the face-piece 5 (being that the upper arm of cartridge clip 081 is pushed down the vacant chamber 51 bottom downsides that metal guide electric axis 22 upsides, underarm are positioned at face-piece 5).Present embodiment only provides its partial structurtes schematic diagram.Certainly, also can use the centering block structure among embodiment two or the embodiment three among the embodiment four, be not described in detail in this.

Embodiment five, Figure 20 is the structural representation of the utility model embodiment five, the difference of present embodiment and embodiment one only is face-piece and elastic arm, as can be seen from Fig. 20, elastic arm 60 is metal guide electric axis 21 below bar shaped elastomers, its front and back end is supported by two boss 50 and 500 on the face-piece 05 respectively, block wing 92 on the drain pan 9 stretches into the upside of pushing down metal guide electric axis 21 in the vacant chamber of face-piece 05 and makes the elastic arm 60 of bar shaped be bent downwardly distortion and produce elastic force, with guarantee between metal conductive shaft 21 and the elastic arm 60 contact good, elastic arm 60 left ends are connected with charging circuit output on the wiring board by wire, and in like manner the metal guide electric axis on the centering block other end also is the same with the syndeton of elastic arm; In addition, if the block wing among Figure 20 92 is also metal guide electric axis 21 contacts not, and after putting into mobile phone, utilize mobile phone gravity that the metallic conduction axial compression is kept in touch at the elastic arm upside (at this moment, elastic arm also can not have elasticity, do not need support rim 50 and 500) yet, being that this contact reliability is low, is a kind of bad technical scheme that becomes.Certainly, also can use the centering block structure among embodiment two or the embodiment three among the embodiment five, be not described in detail in this.

Embodiment six, use the centering block assembly among the embodiment one instead structure shown in Figure 21 and namely consist of embodiment six, see Figure 21, the difference of Fig. 2 among it and the embodiment one is only on centering block, through hole C11 on the centering block C1 and C12 respectively with metal guide electric axis 21 and 22 on clubfoot match, make it distortion once and can prevent that the metal guide electric axis from coming off from centering block in burn-on scolding tin or punching press of the clubfoot 211 that stretches out centering block C1 back and 221 places (seeing Figure 22 and Figure 23) after each assembly is installed; Above-described embodiment four and embodiment five also can adopt the centering block structure of embodiment six.

Two card wings 71 and 72 also can be directly to stretch out the structure that is connected as a single entity from face-piece about among the embodiment one, and the number of patent application that this structure is mentioned in background technology is open in 200910037223.4 the patent announcement, does not repeat them here.

Innovative point of the present utility model mainly is the syndeton of centering block, metal guide electric axis, output electrode and metal guide electric axis and elastic arm, so, part embodiment has only provided take centering block, metal guide electric axis, output electrode or face-piece as main figure in the various embodiments described above, and among the part embodiment also the structure of paper centering block assembly and with the syndeton of elastic arm, those skilled in the art are understandable after the relevant charger patent application of retrieval.

Claims (7)

1. charger, comprise charging circuit, centering block, conversion head and shell, it is characterized in that described centering block two ends stretch out respectively the metal guide electric axis, described two strip metal conductive shaft the inners respectively be arranged on described centering block on two draw-in grooves that two output electrodes are electrically connected, the outer end lays respectively at described shell in, two elastic arms that are electrically connected with the positive-negative output end of described charging circuit suppress respectively the face of cylinder that two strip metal conductive shaft outer ends are stated in the residence.

2. described charger according to claim 1 is characterized in that described elastic arm is cartridge clip, and two elastic arms of this cartridge clip are clamped corresponding described metal guide electric axis.

3. described charger according to claim 1 is characterized in that described elastic arm is cartridge clip, and two elastic arms of this cartridge clip are clipped in respectively between the corresponding described metal guide electric axis and described shell.

4. described charger according to claim 1, it is characterized in that described shell is made of face-piece and drain pan, described centering block is arranged in the described face-piece, described elastic arm is positioned at corresponding described metal guide electric axis below and the front and back end is supported by two boss on the described face-piece respectively, and described drain pan is provided with and stretches into that the upside of pushing down described metal guide electric axis in the described face-piece makes described elastic arm distortion and the block wing that produces elastic force.

5. according to claim 1 and 2 or 3 or 4 described chargers, it is characterized in that described output electrode is provided with the elbow of pushing down corresponding described metal guide electric axis the inner.

6. according to claim 1 and 2 or 3 or 4 described chargers, it is characterized in that described output electrode is the conjoined structure that is become by a strip metal cylinder bending with corresponding described metal guide electric axis.

7. according to claim 1 and 2 or 3 or 4 described chargers, it is characterized in that being electrically connected by electric wire between described output electrode and corresponding metal guide electric axis the inner.

Images