CN222366086U - Chargers and charging devices - Google Patents

Abstract

The present application relates to the field of charging technology, and more specifically, to a charger and a charging combination device. The charger comprises: a shell, a first electrical connector and a second electrical connector; the shell has at least one battery slot for inserting a rechargeable battery; the shell also has a first docking portion and a second docking portion, the first electrical connector is located at the first docking portion, and the second electrical connector is located at the second docking portion; the first docking portion is used to be detachably connected to the second docking portion of another charger, so that the first electrical connector is electrically connected to the second electrical connector of another charger. The charging combination device comprises: at least a charger, and at least two chargers are electrically connected. The present application can save charging cables and simplify the lines on the set.

Description

Charger and charging combination device

Technical Field

The application relates to the technical field of charging, in particular to a charger and a charging combination device.

Background

In recent years, along with the development of entertainment industry, photographic recording equipment is widely used in daily life of consumers, and the photographic recording equipment is equipped with rechargeable batteries to provide electricity for the equipment. In order to satisfy the charging of the rechargeable battery, a charger is generally provided, and the rechargeable battery is charged by the charger. However, in order to charge a plurality of rechargeable batteries at the same time, a plurality of power sockets are required, and the power strip can solve the problem of the power sockets, but more charging wires are generated, so that the field lines are more and more complicated.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of utility model

The embodiment of the application aims to provide a charger and a charging combination device, which aim to at least solve the technical problems that more charging lines appear and more chip field lines are mixed when a plurality of rechargeable batteries are charged.

In order to achieve the above purpose, the application adopts the technical scheme that the charger comprises a shell, a first electric connecting piece and a second electric connecting piece;

The shell is provided with at least one battery slot for inserting a rechargeable battery;

The shell is also provided with a first butt joint part and a second butt joint part, the first electric connecting piece is positioned at the first butt joint part, and the second electric connecting piece is positioned at the second butt joint part;

The first docking portion is configured to detachably connect with the second docking portion of the other charger, so that the first electrical connector is electrically connected with the second electrical connector of the other charger.

In one possible design, the charger further comprises a switch assembly and a circuit board, the switch assembly is electrically connected with the circuit board, and the first electrical connector and the second electrical connector are respectively electrically connected with the circuit board;

the switch component is arranged on the first butt joint part;

The switch assembly is configured to be triggered to open a circuit between the charger and the other charger during docking of the first docking portion with the second docking portion of the other charger.

In one possible design, the switch assembly includes an elastic triggering portion and a key switch, the elastic triggering portion is mounted on the housing, and the key switch is electrically connected with the circuit board;

The elastic triggering part comprises an elastic piece and a push button, wherein the push button is used for pressing the key switch by enabling the elastic piece to be compressed.

In one possible design, the switch assembly further comprises a guide member having a first guide slot in which the push button is slidably disposed;

one end of the elastic piece is abutted against the push button, and the other end of the elastic piece is abutted against the guide piece, so that the push button can be contacted with the key switch when the elastic piece is compressed.

In one possible design, one of the first and second docking portions has a guide slide, the other has a guide chute;

When the first butt joint part is in butt joint with the second butt joint part of another charger, the guide sliding block can move along the length direction of the guide sliding groove so as to be limited in the guide sliding groove.

In one possible design, the guide slide comprises a base body part and a limit wing, wherein the limit wing is connected with the base body part;

The guide chute comprises a limit groove and a sliding groove communicated with the limit groove, and the width of the limit groove is larger than that of the sliding groove;

the limit wings extend into the limit grooves, and at least part of the base body part is positioned in the sliding grooves.

In one possible design, the two ends of the guide chute in the length direction are an open end and a closed end respectively;

The two ends of the guide sliding block in the length direction are a first end and a second end respectively, and the first end is provided with a guide inclined plane;

when the first butt joint part is in butt joint with the second butt joint part of the other charger, the first end slides into the guide chute from the opening end.

In one possible design, the switch assembly is also used to limit the movement of the guide slide along the length of the guide chute so that the guide slide is locked in the guide chute.

In one possible design, the housing includes a main housing having a first through hole and a battery housing secured in the first through hole.

The application also provides a charging combination device which comprises at least two chargers, wherein the chargers are any one, and the at least two chargers are electrically connected.

The charger and the charging combination device provided by the application have the beneficial effects that:

According to the application, two or more chargers are electrically connected to form a charging combination, so that one charging wire can be used for supplying power to the charging combination, and the charging of the rechargeable battery on each charger is realized, so that the charging wires can be saved, the field lines are simplified, and the neatness of the field and the safety of the field are ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a charger according to an embodiment of the present application;

Fig. 2 is a schematic structural view of a charger according to another embodiment of the present application;

fig. 3 is a schematic structural diagram of a charger according to another embodiment of the present application;

FIG. 4 is an exploded view of a charger according to an embodiment of the present application;

FIG. 5 is a schematic view of the structure of the charger without the main casing according to the embodiment of the present application;

Fig. 6 is a schematic view of the structure of the charger without the main case and the push button cover according to the embodiment of the present application;

FIG. 7 is an enlarged partial schematic view at A in FIG. 6;

FIG. 8 is a schematic view of the structure of FIG. 5 from another perspective;

FIG. 9 is a state diagram during docking of two chargers in an embodiment of the present application;

Fig. 10 is a schematic structural diagram of a charging assembly according to an embodiment of the present application;

fig. 11 is a partially enlarged schematic view at B in fig. 10.

The main reference numerals illustrate:

100. A charger; 101, first electrical connector, 102, second electrical connector, 103, housing, 104, battery slot, 105, first mating portion, 106, second mating portion, 107, pin, 108, contact pad, 109, main housing, 110, battery housing, 111, first through hole, 112, top surface, 113, bottom surface, 114, side surface, 115, air inlet, 116, air outlet, 117, circuit board, 118, TYPE-C interface, 119, USB interface, 120, second through hole, 121, first jack, 122, second jack, 123, third through hole, 124, light guide post, 125, light blocking structure, 126, push button, 127, elastic member, 128, push button, 129, toggle portion, 130, plug-in post, 131, guide member, 132, first guide slot, 133, guide slider, 134, guide chute, 135, base portion, 136, limit wing, 137, limit slot, 138, slide slot, 139, open end, 140, 141, first end, 142, second end, front end face, 146, rear end face, 146, inclined face, 147, inclined face, 144, push button, inclined face, and cover.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In order to explain the technical scheme of the application, the following is a detailed description with reference to the specific drawings and embodiments.

Referring to fig. 1 to 11, in one or more embodiments, the present application provides a charger 100 including a housing 103, a first electrical connector 101 and a second electrical connector 102, the housing 103 having at least one battery slot 104 thereon, the battery slot 104 for insertion of a rechargeable battery, the housing 103 further having a first docking portion 105 and a second docking portion 106, the first electrical connector 101 being located at the first docking portion 105, the second electrical connector 102 being located at the second docking portion 106, the first docking portion 105 being configured to be detachably connected with the second docking portion 106 of another charger 100 such that the first electrical connector 101 is electrically connected with the second electrical connector 102 of the other charger 100.

In the application, two or more chargers 100 are electrically connected to form a charging combination, so that one charging wire can be used for supplying power to the charging combination, and the charging of the rechargeable battery on each charger 100 is realized, thereby saving the charging wires, simplifying the field lines and ensuring the neatness of the field and the safety of the field. The splice arrangement of the chargers 100 also solves the problems of the charge waiting time of a plurality of rechargeable batteries and the mess of the wires of the charging connector, so that the limited space is reasonably utilized.

Referring to fig. 1 to 3, in some embodiments, the housing 103 has a rectangular parallelepiped base, the first electrical connector 101 and the second electrical connector 102 may be referred to as electrical connectors, the first electrical connector includes a plurality of pins 107 spaced apart, the pins 107 are connected with springs, the second electrical connector 102 includes a plurality of contact pieces 108 spaced apart, the springs are compressed when the pins 107 abut the contact pieces 108 to realize a connection between the two chargers 100, and the pins 107 may have a columnar or spherical structure.

Referring to fig. 1-3, in some embodiments, the housing 103 may have a plurality of battery slots 104 thereon, which may facilitate contact between the rechargeable battery and the electrodes 149 in the battery slots 104 to make electrical connection between the rechargeable battery and the electrodes, and exemplary numbers of battery slots 104 may be two, and it is understood that the number of battery slots 104 may also be 3, 4, 5, etc. The first docking portion 105 and the second docking portion 106 are oppositely arranged, so that when two or more chargers 100 are oppositely spliced together, a linear structure can be formed, and because each charger 100 is provided with the first docking portion 105 and the second docking portion 106, each charger 100 can be detachably and fixedly connected with one or two chargers 100, so that series connection of a plurality of chargers 100 is realized, but the chargers 100 are connected in parallel in a circuit, and thus, each charger 100 can be ensured to meet the voltage requirement.

Note that, in the embodiment of the present application, the connection between the first docking portion 105 and the second docking portion 106 refers to the connection between the two chargers 100, and the first docking portion 105 of the same charger 100 is not docked with the second docking portion 106 thereof. In addition, in some other possible embodiments, the mounting positions of the first electrical connector 101 and the second electrical connector 102 may be reversed, i.e. the first electrical connector 101 is located at the second mating portion 106 and the second electrical connector 102 is located at the first mating portion 105, or the first electrical connector 101 includes a plurality of contact pads 108 spaced apart, and the second electrical connector 102 includes a plurality of pins 107 spaced apart.

Referring to fig. 1 to 4, in some embodiments, the case 103 includes a main case 109 and a battery case 110, the main case 109 has a first through hole 111, and the battery case 110 is fixed in the first through hole 111, so that the manufacturing of the charger 100 is facilitated by means of assembly. The battery slot 104 is positioned on the battery shell 110, the cross section of the main shell 109 is annular, the cross section of the main shell 109 is perpendicular to the length direction of the main shell 109, so that the opposite ends of the main shell 109 are open, the shell 103 further comprises a first side cover and a second side cover, the first side cover and the second side cover are fixedly connected with the main shell 109 through screws respectively, the battery shell 110 is fixedly connected with the main shell 103 through screws, the first side cover forms a first butt joint part 105, and the second side cover forms a second butt joint part 106. The depth of the battery slot 104 is matched with that of the rechargeable battery to prevent the battery from falling off due to shaking during charging, for example, the depth of the battery slot 104 may be half or one third of the length of the rechargeable battery.

Referring to fig. 1 to 3, in some embodiments, the main case 109 has opposite top and bottom surfaces 112 and 113, and opposite side surfaces 114, and the first through-hole 111 is located on the top surface 112 of the main case 109 so that the rechargeable battery can be vertically inserted into the battery slot 104 of the battery case 110. The bottom surface 113 of the main casing 109 has an air inlet 115, the air inlet 115 may include a plurality of elongated through holes or circular through holes, one side 114 of the main casing 109 has an air outlet 116, the air outlet 116 may include a plurality of elongated through holes or circular through holes, and of course, the shape of the through holes may be designed into other shapes, so as to facilitate heat dissipation of the charger 100 by designing the air outlet 116 and the air inlet 115.

Referring to fig. 5, in some embodiments, the charger 100 further includes a circuit board 117, and a transformer, a rectifier and a control chip are generally integrated on the circuit board 117 to realize charging of the rechargeable battery, where the transformer is used to convert the power input voltage to a voltage level suitable for charging of the device and provide an isolated and stable output current. The rectifier converts the alternating current power supply into direct current power supply for charging the device. The control chip is used to monitor and control the operation of the charger 100 circuitry to ensure safe and efficient charging. The circuit board 117 is also integrated with a plurality of LED lamps, so that whether the rechargeable battery is fully charged is indicated by the number of the lighted LED lamps, the circuit board 117 is also integrated with a button switch 148, the button switch 148 is used for controlling the on or off of all the LED lamps, so that the LED lamps can be turned off through the button switch 148 in order to avoid the dry-up of the LED lamps at night, the button switch 148 is also used for controlling whether the state of charge is displayed by the lighted LED lamps, the circuit board 117 is also integrated with a USB interface 119 and a TYPE-C interface 118 as power supply input ports, and the TYPE-C interface 118 is connected with a charging line so as to charge the rechargeable battery in the battery slot 104, and the USB interface 119 can be connected with the charging line so as to charge other electronic devices by using the rechargeable battery inserted in the battery slot 104 when the rechargeable battery is fully charged. The number of TYPE-C interfaces 118 may be two or more, and the electrodes 149 are integrated on the circuit board 117.

It should be noted that, for the connection relationship between the integrated components of the circuit board 117 and the control of the components on the circuit board 117, so as to charge the rechargeable battery, and the rechargeable battery plugged in the charger 100 charges other electronic devices, it should be understood by those skilled in the art that bidirectional charging is achieved, and is well known and easy to be implemented by those skilled in the art, so that the embodiments of the present application will not be described in detail. In addition, in some other possible embodiments, the TYPE-C interface 118 may also be configured to support a bidirectional charging mode, i.e., the rechargeable battery in the battery slot 104 may be charged through the charging cord, and when the rechargeable battery is fully charged, other electronic devices may be charged through the TYPE-C interface 118 using the rechargeable battery inserted in the battery slot 104 as well.

Referring to FIG. 5, in some embodiments, TYPE-C interface 118 corresponds to a first receptacle 121 of a side 114 of main housing 109 and USB interface 119 corresponds to a second receptacle 122 of a top 112 of main housing 109. The push button switch 148 extends out of the second through hole 120 of the top surface 112 of the main housing 109, so that the push button switch 148 is convenient to operate, one light guide column 124 corresponds to each LED lamp, and the top of the light guide column 124 corresponds to the third through hole 123 of the top surface 112 of the main housing 109, so that the light emitted by the LED lamps can be conveniently observed outside the housing 103 through the light guide column 124. The two adjacent LED lamps are separated by the light isolation structure 125, so that light strings among the LED lamps are avoided, the light isolation structure 125 can be a part of the main casing 103, or can be a split structure, and the light isolation structure 125 is fixed on the circuit board 117 or is adhered to the main casing by screws. The light isolation structure 125 has a plurality of light holes, the plurality of LED lamps are arranged in one-to-one correspondence with the plurality of light holes, and the light guide column 124 can be inserted into the light holes, and the light guide column 124 can be made of transparent plastic, for example, PC or PMMA.

In the process of splicing the two chargers 100, when one charger 100 is already connected to an external power source and then the other charger 100 is docked with the charger 100 already connected to the external power source, the electric connection between the first electric connector 101 and the second electric connector 102 between the two chargers 100 may generate an electric spark phenomenon, and in order to solve this problem, the charger 100 is further provided with a switch assembly in the embodiment of the present application. Referring to fig. 6, 7 and 8, in some embodiments, the charger 100 further includes a switch assembly electrically connected to the circuit board 117, the first electrical connector 101 and the second electrical connector 102 are electrically connected to the circuit board 117, respectively, the switch assembly is disposed on the first docking portion 105, and the switch assembly is configured to be triggered during docking of the first docking portion 105 with the second docking portion 106 of the other charger 100, so that the charger 100 is disconnected from the other charger 100, thereby avoiding a spark phenomenon during the docking process.

In some embodiments, the switch assembly includes a resilient triggering portion mounted on the housing 103 and a push button switch 126, the push button switch 126 being electrically connected to the circuit board 117, the resilient triggering portion including a resilient member 127 and a push button 128, the push button 128 being configured to press the push button switch 126 by causing the resilient member 127 to be compressed.

In one embodiment, the normally-closed self-resetting key switch is a normally-closed self-resetting key switch, wherein the contact is in a closed state when not pressed and is opened to cut off current when the button is pressed, and the contact automatically returns to the original closed state to restore the electrified state after the button is released. With the key switch 126, it is achieved that the charger 100 in which the switch assembly is located is in an open state when pressed. The elastic member 127 is a spring, the push button 128 is in a block structure, for example, in a cuboid shape, the push button 128 is further provided with a poking part 129, so that a user can conveniently poke the push button by hand, the other side surface 114 of the main shell 109 is provided with a corresponding poking through hole, the poking part 129 stretches into the poking through hole so that the poking part 129 is exposed, and the poking through hole can be a rectangular through hole. The push button 128 has a front end face 143 and a rear end face 144 opposite to each other, the front end face 143 of the push button 128 is further fixed with two insertion posts 130, and the two insertion posts 130 are respectively sleeved with an elastic member 127.

It should be noted that, although the switch assembly provided in the embodiment of the present application can solve the problem of electric spark generated during the splicing process of the two chargers 100, in order to ensure the use safety as much as possible, it is recommended that the chargers 100 are connected in a state of not being connected to an external power source or a socket when the chargers 100 are butted, and of course, the above-mentioned use advice is not a limitation on the structure of the chargers 100 and the problem to be solved correspondingly in the embodiment of the present application. In some other possible embodiments, the switch assembly may be provided at the second docking portion 106, or both the first docking portion 105 and the second docking portion 106 of the charger 100 may be provided with the switch assembly.

Referring to fig. 7, in some embodiments, the switch assembly further includes a guide member 131, the guide member 131 has a first guide groove 132, the push button 128 is slidably disposed in the first guide groove 132, one end of the elastic member 127 abuts against the push button 128, the other end of the elastic member 127 abuts against the guide member 131, so that the front end 143 of the push button 128 can contact the push button 126 when the elastic member 127 is compressed, and the push button 128 slides along a predetermined direction, i.e., moves along the axial direction of the insertion column 130, through the first guide groove 132. In one embodiment, the switch assembly further comprises a push button cover 147, wherein the push button cover 147 is fixedly connected with the guide member 131 through a screw, so that the push button 128 is limited on the guide member 131.

Referring to fig. 1 to 3, and referring to fig. 9 to 11, in some embodiments, one of the first docking portion 105 and the second docking portion 106 has a guide slider 133, and the other has a guide chute 134, and when the first docking portion 105 is docked with the second docking portion 106 of the other charger 100, the guide slider 133 can move along the length direction of the guide chute 134 to be limited in the guide chute 134, so that the two chargers 100 can be conveniently docked by sliding fit, i.e., wireless connection, i.e., connection is achieved by adopting a non-wire manner. In one embodiment, the guiding chute 134 is disposed on the first abutting portion 105, and the guiding slider 133 is disposed on the second abutting portion 106, the length direction of the guiding chute 134 is parallel to the direction from one side surface 114 to the other side surface 114 of the main casing 109, and the moving direction of the push button 128 is parallel to the direction from the first abutting portion 105 to the second abutting portion 106.

It will be appreciated that the first electrical connector 101 and the second electrical connector 102 are not limited to the above-mentioned mating method, but may be other forms, such as a mating form, and that the first mating portion 105 and the second mating portion 106 may be mated when the first electrical connector 101 is mated with the second electrical connector 102. In addition, the guiding chute 134 may be further disposed at the second abutting portion 106, and the guiding slider 133 may be disposed at the first abutting portion 105.

Referring to fig. 8, in some embodiments, the guide slider 133 includes a base portion 135 and a limiting wing 136, the limiting wing 136 is connected to the base portion 135, the width of the limiting wing 136 is larger than that of the base portion 135, the guide chute 134 includes a limiting groove 137 and a sliding groove 138 communicating with the limiting groove 137, the width of the limiting groove 137 is larger than that of the sliding groove 138, the limiting wing 136 extends into the limiting groove 137, and at least part of the base portion 135 is located in the sliding groove 138, so that limiting of the guide slider 133 is facilitated. In one embodiment, the width direction of the base portion 135 is parallel to the direction from the top surface 112 to the bottom surface 113 of the main case 109, the width direction of the base portion 135 is parallel to the width direction of the limiting groove 137, and the width direction of the limiting wing 136 is parallel.

Referring to fig. 5, in some embodiments, the two ends of the guiding chute 134 in the length direction are respectively an open end 139 and a closed end 140, the two ends of the guiding slide 133 in the length direction are respectively a first end 141 and a second end 142, the first end 141 has a guiding inclined surface 146, and when the first docking portion 105 is docked with the second docking portion 106 of the other charger 100, the first end 141 slides into the guiding chute 134 from the open end 139, so as to facilitate ensuring the stability of the connection between the two chargers 100. The length of the guide chute 134 is greater than the length of the guide slider 133.

As shown in fig. 9, 10 and 11, fig. 10 is also a state diagram of the two chargers after docking, and in some embodiments, the switch assembly is further used to limit the guide slider 133 to move along the length direction of the guide chute 134, so that the guide slider 133 is locked in the guide chute 134, thus ensuring the stability of the connection between the two chargers 100. Illustratively, the second end 142 of the push button 128 extends into the guide chute 134, and a distance between the second end 142 of the push button 128 and the closed end 140 of the guide chute 134 is greater than or equal to the length of the guide slider 133. The rear end surface 144 of the push button 128 has an inclined surface 145, the inclined surface 145 is matched with the guide inclined surface 146, when the two chargers 100 are in butt joint, the guide inclined surface 146 on the guide slide block 133 is contacted with the inclined surface 145 of the push button 128, so that the push button 128 moves towards the direction of the push button 126 to trigger the push button 126, when the guide slide block 133 completely enters the guide slide groove 134, the length of the guide slide groove 134 is longer than that of the guide slide block 133, and the distance between the second end 142 of the push button and the closed end 140 of the guide slide groove 134 is longer than or equal to that of the guide slide block 133, so that the push button 128 is not extruded by the guide slide block 133 any more, the push button 128 can be in butt joint with the end surface of the second end 142 of the guide slide block 133 under the action of the elastic piece 127, and the guide slide block 133 is locked in the guide slide groove 134, and when the push button 128 is in a reset, the push button 128 is not in butt joint with the push button 126, the push button 126 again, so that the charger 100 is in a channel state. In addition, when the two chargers 100 need to be disassembled, the disassembly can be realized only by pulling the pulling part 129.

Referring to fig. 10, in one or more embodiments, the present application also provides a charging assembly comprising at least two chargers 100 according to any of the embodiments, at least two chargers 100 being electrically connected.

The above description is illustrative of the various embodiments of the application and is not intended to be limiting, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims (10)

1. A charger characterized by comprising a shell (103), a first electric connecting piece (101) and a second electric connecting piece (102);

The shell (103) is provided with at least one battery slot (104), and the battery slot (104) is used for inserting a rechargeable battery;

The shell (103) is further provided with a first butt joint part (105) and a second butt joint part (106), the first electric connecting piece (101) is positioned at the first butt joint part (105), and the second electric connecting piece (102) is positioned at the second butt joint part (106);

The first docking portion (105) is configured to be detachably connected to the second docking portion (106) of the other charger, so that the first electrical connector (101) is electrically connected to the second electrical connector (102) of the other charger.

2. The charger of claim 1 further comprising a switch assembly and a circuit board (117), the switch assembly being electrically connected to the circuit board (117), the first electrical connector (101) and the second electrical connector (102) being electrically connected to the circuit board (117), respectively;

the switch assembly is arranged on the first butt joint part (105);

The switch assembly is configured to be triggered to open a circuit between the charger and the other charger during docking of the first docking portion (105) with the second docking portion (106) of the other charger.

3. The charger of claim 2 wherein said switch assembly includes a resilient trigger mounted on said housing (103) and a key switch (126), said key switch (126) being electrically connected to said circuit board (117);

The elastic triggering part comprises an elastic piece (127) and a push button (128), wherein the push button (128) is used for pressing the key switch (126) by enabling the elastic piece (127) to be compressed.

4. A charger as claimed in claim 3, wherein the switch assembly further comprises a guide (131), the guide (131) having a first guide slot (132), the push button (128) being slidably disposed in the first guide slot (132);

One end of the elastic piece (127) is abutted against the push button (128), and the other end of the elastic piece (127) is abutted against the guide piece (131) so that the push button (128) can be contacted with the key switch (126) when the elastic piece (127) is compressed.

5. The charger according to any one of claims 2 to 4, wherein one of the first docking portion (105) and the second docking portion (106) has a guide slider (133), the other one has a guide chute (134);

When the first abutting portion (105) abuts against the second abutting portion (106) of the other charger, the guide slider (133) can move along the length direction of the guide sliding groove (134) so as to be limited in the guide sliding groove (134).

6. The charger of claim 5 wherein said guide slider (133) includes a base portion (135) and a limit wing (136), said limit wing (136) being connected to said base portion (135);

The guide sliding groove (134) comprises a limiting groove (137) and a sliding groove (138) communicated with the limiting groove (137), and the width of the limiting groove (137) is larger than that of the sliding groove (138);

The limiting wings (136) extend into the limiting grooves (137), and at least part of the base body portion (135) is located in the sliding grooves (138).

7. The charger of claim 6, wherein both ends in the length direction of the guide chute (134) are an open end (139) and a closed end (140), respectively;

The two ends of the guide sliding block (133) in the length direction are a first end (141) and a second end (142) respectively, and the first end (141) is provided with a guide inclined plane (146);

The first end (141) slides from the open end (139) into the guide chute (134) when the first docking portion (105) is docked with the second docking portion (106) of the other charger.

8. The charger of claim 7 wherein said switch assembly is further adapted to limit movement of said guide slide (133) along a length of said guide chute (134) such that said guide slide (133) is locked in said guide chute (134).

9. The charger according to any one of claims 1 to 4, wherein the housing (103) includes a main case (109) and a battery case (110), the main case (109) having a first through hole (111), the battery case (110) being fixed in the first through hole (111).

10. A charging assembly comprising at least two chargers according to any of claims 1 to 9, wherein at least two of said chargers are electrically connected.