Charger with plugs of various specifications

Abstract

The utility model relates to a charger with plugs of various specifications, which comprises a shell internally provided with an accommodating cavity and a plurality of plugs of different specifications, a circuit board is mounted in the accommodating cavity, and the plugs are arranged on the shell in a foldable manner and / or arranged in the accommodating cavity in a limited sliding manner and can penetrate out of the shell. The shell is also provided with a switch which is electrically connected with the circuit board and is used for adjusting electrical conduction between the plugs of different specifications and the circuit board; the shell is further provided with an electric connection interface electrically connected with the circuit board. The portable charger is convenient to carry and use, and the switch arranged on the charger can conveniently control the electrical conduction of different plugs, so that the safety in use is ensured.

Description

Technical Field

[0001] The utility model relates to the field of chargers, in particular to a charger with multiple specifications of plugs. Background Art

[0002] On the chargers of mobile phones or other portable electronic devices used in our lives, only one type of plug is provided. However, for some people who often travel or go on business trips, the jacks used in hotels in different countries are different, which will cause the problem that the charger plugs we use do not match and cannot be charged. At present, chargers with convertible plugs have emerged in the market, but the convertible plugs of these chargers are often separated from the charger body and need to be assembled during use, which is inconvenient for carrying and use, and will also cause the convertible plugs to be often left behind or lost. Content of the Utility Model

[0003] Aiming at the existing deficiencies, the utility model provides a charger with multiple specifications of plugs.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a charger with multiple specifications of plugs, including a housing with a receiving cavity inside, and multiple plugs with different specifications. A circuit board is installed in the receiving cavity. The plugs are foldably arranged on the housing and / or are limitedly slidably arranged in the receiving cavity and can pass through the housing. A switch electrically connected to the circuit board is also arranged on the housing for adjusting the electrical conduction between the plugs with different specifications and the circuit board. An electrical connection interface electrically connected to the circuit board is also arranged on the housing.

[0005] Preferably, a first through hole communicating with the receiving cavity is arranged on the cavity wall of the receiving cavity. The plug is limitedly slidably arranged in the receiving cavity along the axial line direction of the first through hole and can pass through the first through hole. A strip-shaped through hole extending along the axial line direction of the first through hole is arranged on the housing. A sliding member is slidably arranged in the strip-shaped through hole, with one end connected to the plug and the other end outside the housing.

[0006] Preferably, a partition in a cylindrical structure with an axial line parallel to the axial line of the first through hole is arranged on the cavity wall of the receiving cavity along the edge of the first through hole. The partition is provided with a first opening on the side opposite to the strip-shaped through hole. The plug is limitedly slidably arranged in the partition through a first mounting frame. The sliding member sequentially passes through the strip-shaped through hole and the first opening and is connected to the first mounting frame.

[0007] Preferably, first engaging members and first elastic pieces that can be engaged with each other and conduct electricity are arranged on the plug and the cavity wall of the receiving cavity.

[0008] Preferably, a positioning block for positioning the sliding member is provided on the inner wall of the shell at a position corresponding to the first opening; the sliding member includes an I-shaped pressing portion that can be sleeved on the two long sides of the strip through hole, and a fixing portion fixedly connected to the plug, and the pressing portion can be elastically telescopically arranged on the fixing portion.

[0009] Preferably, a first groove is provided on the outer surface of the shell, a second through hole connected with the first groove is provided on the cavity wall of the accommodating cavity, a second mounting bracket is installed in the accommodating cavity, the plug limit flip is arranged in the first groove, a second spring sheet electrically connected with the circuit board is provided on the second mounting bracket, and one end of the plug passes through the second through hole and abuts against the second spring sheet.

[0010] Preferably, an abutment piece extends from the second spring sheet and abuts against the plug and forms a V-shaped structure with the second spring sheet, and an outwardly protruding V-shaped groove is provided at the connection between the abutment piece and the second spring sheet; and a pressing head is provided on the plug and abuts against the abutment piece and can be engaged in the V-shaped groove.

[0011] Preferably, an abutment piece extends from the second elastic sheet and abuts against the plug and forms a V-shaped structure with the second elastic sheet; the plug is a plug having a grounding pin and two non-grounding pins; a gear transmission mechanism is provided on the second mounting frame, and the grounding pin is connected to the two non-grounding pins through the gear transmission mechanism; the non-grounding pin abuts against the second elastic sheet.

[0012] Preferably, the gear transmission mechanism comprises two racks arranged in parallel with each other at an interval, and a plurality of gears meshing with the racks; each of the racks is provided with teeth on surfaces facing away from each other on both sides, and a bending portion is bent in the middle so that the teeth on the two surfaces are in the same horizontal plane; the grounding pin is provided with two gears meshing with the teeth on the same side of the two racks, and the two non-grounding pins are provided with a gear meshing with the teeth on the other side of the corresponding rack.

[0013] Preferably, a first locking groove and a locking block capable of locking and limiting each other are provided between one end of the grounding pin meshing with the rack and the second mounting frame.

[0014] The beneficial effects of the utility model are as follows: the utility model does not require assembly, is convenient to carry and use, and at the same time utilizes the provided switch to conveniently manually adjust the electrical conductivity of the plug to be used, so that the power supply can be timely cut off by the switch in an abnormal situation, thereby improving the safety of use; and by providing the switch on the housing, it is not necessary to provide other components (such as relays, transistors, smart chips, etc.) on the circuit to switch the power-on status of different plugs, thereby simplifying the circuit setting and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the bottom surface of an embodiment of the present utility model;

[0016] Figure 2 It is a schematic structural diagram of the side surface of an embodiment of the present utility model;

[0017] Figure 3 It is a schematic exploded structural diagram of an embodiment of the present utility model;

[0018] Figure 4 It is a schematic structural diagram of an embodiment of the present utility model with a circuit board installed inside the housing;

[0019] Figure 5 It is a schematic structural diagram of an embodiment of the present utility model without a circuit board installed inside the housing;

[0020] Figure 6 It is a schematic structural diagram of the bottom surface of the housing of an embodiment of the present utility model;

[0021] Figure 7 It is a schematic connection structural diagram of a European plug and a first mounting bracket in an embodiment of the present utility model;

[0022] Figure 8 It is a schematic structural diagram of the pressing part in an embodiment of the present utility model;

[0023] Figure 9 It is a schematic structural diagram of the fixing part on the first mounting bracket in an embodiment of the present utility model;

[0024] Figure 10 It is a schematic connection structural diagram of a US plug and a second mounting bracket in an embodiment of the present utility model;

[0025] Figure 11 It is a schematic connection structural diagram of a UK plug and a second mounting bracket in an embodiment of the present utility model;

[0026] Figure 12 It is a schematic connection structural diagram of a UK plug and a gear transmission mechanism in an embodiment of the present utility model;

[0027] Figure 13 It is a schematic internal structural diagram of the second mounting bracket cooperating with a UK plug in an embodiment of the present utility model;

[0028] Figure 14 It is a circuit schematic diagram of two single-pole triple-throw switches and three plugs in an embodiment of the present utility model:

[0029] Names and serial numbers of components in the figure: 1 - housing, 10 - accommodating cavity, 100 - first through hole, 11 - strip-shaped through hole, 12 - partition board, 120 - first opening, 13 - first elastic piece, 14 - positioning block, 15a, 15b - first grooves, 150a, 150b - second through holes, 151a, 151b - second mounting brackets, 152a, 152b - second elastic pieces, 153a, 153b - abutting pieces, 154 - V-shaped card slot, 155a, 155b - pressing heads, 156 - clamping block, 157 - second groove, 2a, 2b, 2c - plugs, 20 - first mounting bracket, 21 - first engaging piece, 22 - grounding pin, 220 - first card slot, 23 - non-grounding pin, 24 - gear transmission mechanism, 240 - rack, 241 - gear, 242 - bending part, 3 - circuit board, 4 - switch, 40 - switch body, 41 - push button, 5 - electrical connection interface, 6 - sliding part, 60 - pressing part, 61 - fixing part, 62 - stop block, 63 - hook, 64 - elastic part. Detailed implementation manners

[0030] To more clearly illustrate the purpose, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The description is clear and complete. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. In addition, the directional terms mentioned in the present invention, such as "up", "down", "front", "rear", "left", "right", "inside", "outside", etc., are only references to the directions in the attached drawings. The directional terms used are for better and clearer illustration and understanding of the present invention, rather than indicating or implying the orientation that the present invention must have. Therefore, it cannot be understood as a limitation to the present invention.

[0031] Embodiments of the present invention are as follows Figures 1 to 6As shown in the figure, a charger with multiple specifications of plugs includes a housing 1 with an accommodation cavity 10 inside, and multiple plugs 2a, 2b, 2c of different specifications. The housing 1 can be composed of a bottom shell and an upper cover, and the accommodation cavity 10 inside it is used to install other components of the charger; the plugs 2a, 2b, 2c can be existing plugs of different specifications, such as European standard plug 2a, American standard plug 2b, British standard plug 2c, Chinese standard plug, Japanese standard plug, etc. Two or three of them can be selected according to needs. A circuit board 3 is installed in the accommodation cavity. The circuit board 3 can be any existing full-voltage circuit board that can adapt to different specifications of mains electricity, such as a circuit board with a wide-voltage power chip. The plugs 2a, 2b, 2c can be foldably arranged on the housing 1 and / or limit-slidably arranged in the accommodation cavity 10 and can penetrate out of the housing 1. At this time, according to different needs, the plugs 2a, 2b, 2c are arranged on the housing 1 in a foldable manner. The housing 1 is provided with a storage groove for storing the plugs 2a, 2b, 2c. When in use, the plug 1 is pulled out and unfolded from the storage groove, and when not in use, it is folded and stored in the storage groove on the housing 1. Or the plugs 2a, 2b, 2c are limit-slidably arranged in the accommodation cavity 10. When in use, the plugs 2a, 2b, 2c are slid out of the housing 1, and when not in use, they are slid back into the accommodation cavity 10 for storage. At this time, the housing 1 is provided with through holes for the plugs 2a, 2b, 2c to penetrate out. In actual application, it is preferred to use the above two methods in combination. For example, the European standard plug 2a and the American standard plug 2b with two pins occupy a smaller area of the housing, so the sliding method can be selected, while the British standard plug 2c occupies a larger area of the housing 1, so the British standard plug 2c is arranged on the housing 1 in a foldable manner; the housing 1 is also provided with a switch 4 electrically connected to the circuit board 3 for adjusting the electrical conduction between the plugs 2a, 2b, 2c of different specifications and the circuit board 3. That is to say, each plug 2a, 2b, 2c is connected to the switch 4 and electrically connected to the circuit board 3 through the switch 4. Two switches can be set for the switch 4, and a double-circuit switch is formed by the two switches, which ensures that the neutral wire and the live wire are both disconnected in the case of power failure, avoiding the risk of electric leakage due to the disconnection of the circuit. The switch 4 includes a switch body 40 arranged on the circuit board 3 and a push button 41 or a key installed on the housing 1 for controlling the electrical conduction or closing of the switch body 40. For example, when there are three specifications of plugs 2a, 2b, 2c, the switch 4 is selected as a single-pole triple-throw switch. When there are two specifications of plugs 2a, 2b, 2c, the switch 4 is selected as a single-pole double-throw switch. It is preferred to set three specifications of plugs 2a, 2b, 2c. At this time, the switch 4 is selected as two single-pole triple-throw toggle switches, and a double-circuit switch is formed by these two toggle switches. By toggling the push button 41, different plugs 2a, 2b, 2c can be selected as the input, such as Figure 1As shown, when the push button 41 is in the EU gear position, only the EU plug 2a can work, and the other two plugs 2b and 2c are not charged and will not work. The push button 41 is connected to two toggle switches at the same time, and the energization or power-off of the two toggle switches is controlled by one push button 41. The circuit principle is as Figure 14 shown; when using plugs 2a, 2b, and 2c of a certain specification, manually adjust the switch 4 to electrically connect the plugs 2a, 2b, and 2c of this specification to the circuit board 3, and the plugs 2a, 2b, and 2c of other specifications are in an electrically disconnected state. In this way, in case of an abnormality, the power can be cut off in time by the switch 4 manually, improving the use safety; with such a switch 4 set, there is no need to set electronic components such as relays, transistors, and intelligent chips on the circuit to adjust the circuit energization and power-off, simplifying the circuit setting and reducing the cost; an electrical connection interface 5 electrically connected to the circuit board 3 is also provided on the housing 1, and the electrical connection interface 5 is used to connect a load, such as a type-c interface and a USB A interface, and multiple interfaces can be set according to the situation.

[0032] A further improvement is as Figure 6 shown. A first through hole 100 communicating with the accommodating cavity 10 is provided on the cavity wall of the accommodating cavity 10. The first through hole 100 is provided on the cavity wall of the inner bottom surface of the accommodating cavity 10, that is, on the bottom surface of the housing 1, as Figure 1 、 Figure 3 and Figure 4As shown in the figure, the plug 2a is arranged in the accommodating cavity 10 in a limited sliding manner along the axial direction of the first through hole 100 and can pass through the first through hole 100. The axial direction of the first through hole 100 is the up and down direction. The plug 2a slides up and down at the position corresponding to the first through hole 100 in the accommodating cavity. When it is needed to be used, it is slid downward and passes through the first through hole 100 and then is positioned. When it is not needed to be used, it is slid upward and waits to be completely retracted into the accommodating cavity 10 and then is positioned. By means of the limitation, it is prevented from falling out of the first through hole 100 or shaking in the accommodating cavity 10. Its limiting structure can be the engaging blocks and slots provided on the plug 2a and the inner wall of the housing 1, that is, the wall of the accommodating cavity 10. A strip-shaped through hole 11 extending along the axial direction of the first through hole 100 is provided on the housing 1. The strip-shaped through hole 11 is provided on the housing 1 and extends in the up and down direction. It is provided on the side wall of the housing 1 and at a position adjacent to the first through hole 100 on the bottom surface of the housing 1. A sliding member 6 is slidably arranged in the strip-shaped through hole 11, one end of which is connected to the plug 2a and the other end is located outside the housing 1. In this way, the sliding member 6 can be pushed to slide up and down in the strip-shaped through hole 11, and then the plug 2a is driven to slide up and down in the accommodating cavity 10. At this time, the limited sliding of the plug 2a can also be the engaging blocks and slots provided between the sliding member 6 and the housing 1. In order to ensure the smooth sliding of the plug 2a up and down in the accommodating cavity 10, a partition 12 in a cylindrical structure with an axis parallel to the axis of the first through hole 100 is provided along the edge of the first through hole 100 on the wall of the accommodating cavity 10. The partition 12 surrounds the first through hole 100, and a channel for the plug 2a to slide up and down is formed inside the partition 12. A first opening 120 is provided on the side of the partition 12 opposite to the strip-shaped through hole 11. The setting of the first opening 120 facilitates the connection between the sliding member 6 and the plug 2a. In order to facilitate the sliding of the plug 2a in the partition 12 and protect the plug 2a, a first mounting frame 20 is provided on the plug 2a. The plug 2a is arranged in the partition 12 in a limited sliding manner through the first mounting frame 20. The sliding member 6 passes through the strip-shaped through hole 11 and the first opening 120 in sequence and is connected to the first mounting frame 20, that is, the plug 2a is mounted on the first mounting frame 20, and then the first mounting frame 20 drives the plug 2a to slide in the partition 12 in a limited manner. At this time, a guide groove and a guide post for guiding the sliding of the plug 2a and engaging with each other can be provided between the first mounting frame 20 and the partition 12.Meanwhile, since the plug 2a is slidably disposed within the receiving cavity 10, that is, the plug 2a needs to be electrically connected and conducted with the circuit board 3 only when passing through the first through hole 100. A first engaging member 21 and a first elastic piece 13 which can be engaged with each other and electrically conducted are provided on the plug 2a and the cavity wall of the receiving cavity 10. That is to say, the first engaging member 21 or the first elastic piece 13 is provided on the plug 2a and disposed at the upper part of the plug 2a. Then, a corresponding first elastic piece 13 or first engaging member 21 electrically connected to the switch 4 is provided on the cavity wall of the receiving cavity 10 and disposed on the cavity wall of the inner bottom surface of the receiving cavity 10, that is, on the same surface as the first through hole 100. In this way, after the plug 2a slides down and passes through the first through hole 100, the first engaging member 21 or the first elastic piece 13 on the plug 2a is engaged with the first elastic piece 13 or the first engaging member 21 within the receiving cavity 10 to realize the electrical connection between the plug 2a and the switch 4; when not in use, it can also ensure that the plug 2a is in a disconnected state and there is no risk of electric shock when touching it; when the plug 2a is installed on the first mounting bracket 20, at this time, the first engaging member 21 or the first elastic piece 13 on the plug 2a extends outside the first mounting bracket 20, and the first elastic piece 13 or the first engaging member 21 on the cavity wall of the receiving cavity 10 is located outside the partition plate 12. At the same time, an avoidance notch for avoiding the first engaging member 21 or the first elastic piece 13 on the plug 2a is provided on the partition plate 12. For the limiting structure of the plug 2a sliding within the partition plate 12, a positioning block 14 for positioning the sliding member 6 is provided on the inner wall of the housing 1 at a position corresponding to the first opening 120. The positioning block 14 is arranged in the up and down direction, and there is a distance between its upper end and the top cover of the housing 1 to form a card slot. The surface of the upper part of the positioning block 14 facing the center of the partition plate 12 is provided with a guiding inclined surface. There is also a distance between the lower end of the positioning block 14 and the inner bottom surface of the housing 1 to form another card slot. The surface of the lower part of the positioning block 14 facing the center of the partition plate 12 is also provided with a guiding inclined surface. At this time, the positioning block 14 can be a long strip-shaped positioning rod arranged in the up and down direction, and two of them can be arranged side by side at intervals; in this way, when the sliding member 6 drives the plug 2a to slide upward through the upper guiding inclined surface, the sliding member 6 will slide into the card slot formed between the positioning block 14 and the top cover, thereby positioning the sliding member 6 and further positioning the plug 2a. Similarly, when the sliding member 6 drives the plug 2a to slide downward through the lower guiding inclined surface, the sliding member 6 slides into the card slot formed between the positioning block 14 and the inner bottom surface of the housing 1 to position the sliding member 6; and for the convenience of controlling the sliding member 6, such as. Figures 7 to 9As shown in the figure, the sliding member 6 includes a pressing portion 60 in an I-shaped configuration that can be sleeved on the two long sides of the strip-shaped through-hole 11, and a fixing portion 61 fixedly connected to the plug 2a. The pressing portion 60 can be elastically telescoped and arranged on the fixing portion 61. The pressing portion 60 has an I-shaped structure, which means that two card slots are formed on both sides thereof, and the two long side edges of the strip-shaped through-hole 11 are correspondingly snapped into the two card slots on both sides of the pressing portion 60, so that the pressing portion 60 is sleeved on the two long sides of the strip-shaped through-hole 11, and the pressing portion 60 can move up and down along the strip-shaped through-hole 11. When installing the pressing portion 60, first open the top cover of the housing 1, and the strip-shaped through-hole 11 becomes a U-shaped through-hole with an open upper end, and then the pressing portion 60 can be sleeved in. The fixing portion 61 is fixedly connected to the plug 2a. When the plug 2a is installed on the first mounting bracket 20, the fixing portion 61 is fixedly connected to the first mounting bracket 20. A chute is provided on the fixing portion 61 facing the first opening 120. Stopper blocks 62 extend from the two side walls of the chute. At the same time, an elastic member 64, such as an elastic plunger, is provided at the bottom of the chute. An elastic hook 63 that extends and slides in the chute and can be snapped into the stopper block is provided on the pressing portion 60. The hook 63 is formed by an extension arm extending from the surface of the pressing portion 60 facing the center of the partition 12 and bending the end of the extension arm away from the pressing portion 60 outward. The hook 63 has some elasticity relative to the pressing portion 60. The hook 63 moves in the chute as the pressing portion 60 is pressed into the housing 1. When it encounters the stopper block 62, pressure is applied to the hook 63 to cause it to deform and cross over the stopper block 62. After removing the pressure, the hook 63 is snapped onto the stopper block 62. In this way, when the pressing portion 60 is not pressed, the elastic member 64 presses against the surface of the pressing portion 60 facing the first mounting bracket 20, and the pressing portion 60 presses against the side edge of the strip-shaped through-hole 11. At the same time, the hook 63 is also snapped onto the surface of the stopper block 62 on the side away from the pressing portion 60, and the pressing portion 60 is fixed. Then, when the pressing portion 60 is pressed, the pressing portion 60 is separated from the pressing against the side wall of the strip-shaped through-hole 11, the hook 63 is disengaged from the engagement with the block 62, and the elastic member 64 is compressed. At this time, the sliding member 6 can be adjusted up and down. After the adjustment is completed, the pressing on the pressing portion 60 is released, and the position of the sliding member 6 is limited, and the position of the plug 2a is also limited.

[0033] In practical applications, the first through hole 100 is arranged at the left position of the inner bottom surface of the housing 1, the strip through hole 11 is arranged on the left side wall of the housing 1, the plug 2a selects a European standard plug with two pins, and the two pins are installed on the bottom surface of the first mounting bracket 20. Two protrusions extend from the left and right sides of the top of the first mounting bracket 20, and the four protrusions form the four vertices of a rectangle. Each protrusion is provided with a card slot with an opening facing the outside of the first mounting bracket 20 and an axis line in the up and down direction, that is, a card slot in the up and down direction. At the same time, a first engaging member 21 is arranged at the tail of each of the two pins. The first engaging member 21 is connected to the pin by welding or threading. The first engaging member 21 extends rightward from the top of the first mounting bracket 20 in the radial direction. At the same time, a fixing portion 61 of the sliding member 6 is arranged at the left top of the first mounting bracket 20. The fixing portion 61 is integrally formed with the first mounting bracket 20. The sliding groove is a sliding groove in the left and right direction and is arranged on the left side wall of the fixing portion 61. The stopper 62 is arranged at the position on the front and rear side walls of the sliding groove close to the left side. The hook 63 is formed by two extending arms extending side by side at intervals on the right side surface of the pressing portion 60 and bending outward at the right end of the extending arm. At this time, an avoidance notch for avoiding the first engaging member 21 is arranged on the right side wall of the partition plate 12. A first elastic piece 13 is arranged on the inner bottom wall of the accommodating cavity 10. The first elastic piece 13 is arranged outside the right side of the partition plate 12. The two side edges of the first opening 120 are correspondingly clamped in the card slots on the two protrusions on the left side of the partition plate 12. At this time, a connecting arm connected to the inner side wall of the housing 1 can also extend at a position adjacent to the first opening 120 on the outer wall of the left side of the partition plate 12 to enhance the strength of the partition plate 12. An opening is also arranged on the right side wall of the partition plate 12. The two side edges of the opening are correspondingly clamped in the card slots on the two protrusions on the right side of the partition plate 12. At the same time, an n-shaped protrusion extends at a position corresponding to the opening on the outer wall of the right side of the partition plate 12 to protect the plug 2a.

[0034] Further improvements, such as Figure 1 , Figure 5 and Figure 6As shown in the figure, the outer surface of the housing 1 is provided with first grooves 15a and 15b. The first grooves 15a and 15b are provided on the bottom surface of the housing 1, that is, the bottom surface of the bottom case 1. The first grooves 15a and 15b and the first through holes 100 are arranged at intervals on the bottom surface of the housing 1. Second through holes 150a and 150b communicating with the first grooves 15a and 15b are provided on the cavity wall of the accommodation cavity 10, that is, the second through holes 150a and 150b are provided at the bottom or the wall of the first grooves 15a and 15b. Second mounting brackets 151a and 151b are installed in the accommodation cavity 10. The second mounting brackets 151a and 151b are located on the back of the first grooves 15a and 15b. The plugs 2b and 2c are limited and reversibly arranged in the first grooves 15a and 15b. Second elastic pieces 152a and 152b electrically connected to the circuit board 3 are provided on the second mounting brackets 151a and 151b. One end of the plugs 2b and 2c passes through the second through holes 150a and 150b and abuts against the second elastic pieces 152a and 152b. The plug 2b is selected to be a plug with two pins, such as a US standard plug, such as Figure 3 and Figure 10As shown in the figure, two pins are correspondingly connected to both ends of a rotating shaft. At this time, two first grooves 15a can be set. The rotating shaft is installed on the second mounting bracket 151a in the accommodating cavity 10. Then, the end of the pin away from the rotating shaft passes through the second through hole 150a and then flips in the first groove 15a. At the same time, two second elastic pieces 152a respectively electrically connected to the circuit board 3 are correspondingly arranged at the positions corresponding to the two pins on the second mounting bracket 151a. And the two second elastic pieces 152a are abutted against the two pins on the side corresponding to the rotating shaft. The two second elastic pieces 152a are both electrically connected to the circuit board 3 through the switch 4. In order to maintain the stability of the pin after flipping and extending out of the first groove 15a during use, a contact member 153a that abuts against the plug 2b and forms a V-shaped structure with the second elastic piece 152a extends on the second elastic piece 152a. An outwardly convex V-shaped card slot 154 is arranged at the connection position of the contact member 153a and the second elastic piece 152a, that is, the second elastic piece 152a is horizontally arranged. Then, the contact member 154 extends downward and leftward on the left side of the second elastic piece 152a. At the same time, the V-shaped card slot 154 extends upward at the position where the second elastic piece 152a is connected to the contact member 153a, and its top angle is set as a rounded corner. A pressing head 155a that abuts against the contact member 153a and can be engaged in the V-shaped card slot 154 is arranged on the plug 2b. The pressing head 155a extends on each pin of the plug 2b, and the pressing head 155a is set as a spherical or cam-shaped structure. When not in use, the pins of the plug 2b are in a horizontal state in the first groove 15a, and the pressing head 155a presses against the contact member 153a. When the plug 2b needs to be used, the pins are flipped and pulled out of the first groove 15a to be in a vertical state, and the pressing head 155a rotates and is engaged in the V-shaped card slot 154 to fix the state of the plug 2b, which is convenient for use. The first groove 15a can be set as a groove that can accommodate all the pins of the plug 2b according to requirements, or can be set as a plurality of first grooves 15a with the same number as the pins of the plug 2b. Then, one first groove 15a corresponds to one pin. Preferably, the structure of one pin corresponding to one first groove 15a is used for the plug 2b with two pins or the plug (Italian plug) with three pins arranged in a row on the same side.In actual use, it is preferred that the plug 2b adopts a US standard plug, the first groove 15a is arranged on the right side of the first through hole 100 and two are arranged side by side in the front and back, the first groove 15a is formed by a concave bottom surface of the shell 1, each first groove 15a is provided with a second through hole 150a, the second through hole 150a is arranged on the left side of the groove wall and the groove bottom of the first groove 15a, and each second through hole 150a is also provided with a second elastic piece 152a in the left and right directions, and the rotating shaft is installed on the second mounting frame 151a in the front and rear direction, and the front and rear ends of the rotating shaft correspond to the second through holes 150a of the front and rear first grooves 15a, and the pin of the plug 2b is connected to the rotating shaft at the second through hole 150a, and the abutment 153a abuts against the left end of the pin.

[0035] For a plug 2c having three pins and arranged in a three-pin finished-shape structure, such as a British standard plug, Figures 11 to 13 As shown in the figure, for the convenience of use, each pin is provided with a first groove 15b, and a second through hole 150b is provided corresponding to each first groove 15b; an abutment member 153b extending from the second elastic sheet 152b is in contact with the plug 2c and forms a V-shaped structure with the second elastic sheet 152b. The difference from the previous case is that the connection between the abutment member 153b and the second elastic sheet 152b is no longer provided with a V-shaped groove; the plug 2c is a plug having a grounding pin 22 and two non-grounding pins 23, and the non-grounding pins 23 are provided with a grounding pin 22 and two non-grounding pins 23. The grounding pin 23 is the live wire pin and the neutral wire pin, and the grounding pin 22 is the ground wire pin; a gear transmission mechanism 24 is provided on the second mounting frame 151b, and the grounding pin 22 is connected to the two non-grounding pins 23 through the gear transmission mechanism 24; the non-grounding pin 23 is in contact with the second elastic sheet 152b, and the gear transmission mechanism 24 is driven to operate through the flipping of the grounding pin 22, and then the two non-grounding pins 23 are driven to flip, so that the plug 2c can be conveniently flipped and pulled out of the first groove 15b when needed.

[0036] For gear transmission mechanisms, Figures 11 to 13As shown in the figure, the gear transmission mechanism 24 includes two racks 240 arranged side by side at intervals and a plurality of gears 241 meshing with the racks 240; each rack 240 is provided with teeth on the surfaces facing away from each other on both sides, and is bent in the middle to form a bent portion 242 that makes the teeth on the two surfaces lie on the same horizontal plane; two gears 241 corresponding to the teeth on the same side of the two racks 240 are provided on the grounding pin 22, and one gear 241 meshing with the teeth on the other side of the corresponding rack 240 is provided on each of the two non-grounding pins 23. In practical applications, for the British standard plug adopting this structure, the rack 240 is in a right-angled Z-shaped structure, with teeth provided on the left bottom surface of the rack 240 and teeth provided on the right top surface. The two racks 240 are arranged side by side in front and back corresponding to the two non-grounding pins 23. Then, a gear 241 is provided on the front and back surfaces at the right end of the grounding pin 22. The axis of the gear 241 is perpendicular to the surface of the grounding pin 22. The front and back gears 241 on the grounding pin 22 are correspondingly meshed with the teeth on the right side of the front and back racks 240. A gear 241 is respectively provided on each of the two non-grounding pins 23, and this gear 241 is meshed with the teeth on the left side of the corresponding rack 240; when not in use, the grounding pin 22 and the non-grounding pins 23 are both in their respective first grooves 15b. When in need of use, pinch the left end of the grounding pin 22 and turn it to the right. At this time, the gear 241 on the grounding pin 22 drives the rack 240 to move to the right as well, and the movement of the rack 240 to the right drives the non-grounding pin 23 to turn to the left, thereby unfolding all three pins, making it more convenient to use. In order to position the unfolded pins, a first card slot 220 and a latch 156 that can be engaged and limited are provided between the end of the grounding pin 22 meshing with the rack 240 and the second mounting bracket 151b, that is, a first card slot 220 and a latch 156 that can be engaged are provided between the right end of the grounding pin 22 and the second mounting bracket 151b. The first card slot 220 is provided at the top of the grounding pin 22 after it is turned and unfolded from the first groove 15b. The first card slot 220 is a card slot with an arc-shaped cross-section. And a latch 156 matching the first card slot 220 is provided on the second mounting bracket 151b at the position corresponding to the top of the grounding pin 22 after it is unfolded. The unfolded pins of the plug 2c are fixed through the engagement of the first card slot 220 and the latch 156. At the same time, a first card slot 220 is also provided at a position 90 degrees to the first card slot 220 at the top after the grounding pin 22 is unfolded. This first card slot 220 faces left. In this way, when the plug 2c is not in use, the first card slot 220 and the latch 156 are in an engaged state, maintaining the structural stability in the storage state.In practical applications, corresponding structures are adopted to slidably arrange a European standard plug, a folding and rotatable American standard plug, and a British standard plug in sequence from left to right on the bottom surface of the housing 1. At the same time, a second groove 157 that is connected to each of the first grooves 15a and 15b and has a depth greater than that of the first grooves 15a and 15b is provided between the first grooves 15a and 15b where the American standard plug and the British standard plug are arranged, so that the right ends of the two pins of the American standard plug and the left end of the grounding pin 22 of the British standard plug are located in the second groove 157, facilitating the pulling, flipping, and unfolding of the plugs 2b and 2c.

[0037] Although the present invention has been described in detail above with general descriptions and specific embodiments, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. A charger with plugs of various specifications, characterized by: It comprises a shell with an accommodating cavity arranged inside and a plurality of plugs of different specifications, wherein a circuit board is installed in the accommodating cavity, and the plug can be folded on the shell and / or limitedly slidably arranged in the accommodating cavity and can pass through the shell, and the shell is also provided with a switch electrically connected to the circuit board for adjusting the electrical conduction between the plugs of different specifications and the circuit board; the shell is also provided with an electrical connection interface electrically connected to the circuit board.

2. The charger with multiple-specification plugs according to claim 1, characterized in that : A first through hole connected to the accommodating cavity is arranged on the cavity wall of the accommodating cavity, the plug is slidably arranged in the accommodating cavity along the axial direction of the first through hole and can pass through the first through hole, and a strip through hole extending along the axial direction of the first through hole is arranged on the shell; a sliding member is slidably arranged in the strip through hole, one end of which is connected to the plug and the other end of which is located outside the shell.

3. The charger with multiple-specification plugs according to claim 2, characterized in that : A cylindrical partition with an axial line parallel to the axial line of the first through hole is arranged on the cavity wall of the accommodating cavity along the edge of the first through hole; the partition is provided with a first opening on the side opposite to the strip through hole, and the plug is slidably arranged in the partition by the first mounting frame; the sliding member passes through the strip through hole and the first opening in turn and is connected to the first mounting frame.

4. The charger with multiple-specification plugs according to claim 2, characterized in that The plug and the cavity wall of the accommodating cavity are provided with a first engaging member and a first elastic sheet which can engage with each other and be electrically conductive.

5. The charger with multiple-specification plugs according to claim 3, characterized in that A positioning block for positioning the sliding member is arranged on the inner wall of the shell at a position corresponding to the first opening; the sliding member includes an I-shaped pressing portion that can be sleeved on the two long sides of the strip through hole, and a fixing portion fixedly connected to the plug, and the pressing portion can be elastically telescopically arranged on the fixing portion.

6. The charger with multiple-specification plugs according to claim 1, characterized in that : A first groove is provided on the outer surface of the shell, a second through hole connected with the first groove is provided on the cavity wall of the accommodating cavity, a second mounting frame is installed in the accommodating cavity, the plug limit flip is set in the first groove, a second spring sheet electrically connected with the circuit board is provided on the second mounting frame, and one end of the plug passes through the second through hole and abuts against the second spring sheet.

7. The charger with multiple-specification plugs according to claim 6, characterized in that : An abutment piece extends from the second spring sheet and abuts against the plug and forms a V-shaped structure with the second spring sheet, and an outwardly protruding V-shaped groove is provided at the connection between the abutment piece and the second spring sheet; and a pressing head is provided on the plug and abuts against the abutment piece and can be engaged in the V-shaped groove.

8. The charger with plugs of various specifications according to claim 6, characterized in that : An abutment piece extends from the second elastic sheet and abuts against the plug and forms a V-shaped structure with the second elastic sheet; the plug is a plug having a grounding pin and two non-grounding pins; a gear transmission mechanism is provided on the second mounting frame, and the grounding pin is connected to the two non-grounding pins through the gear transmission mechanism; the non-grounding pin abuts against the second elastic sheet.

9. The charger with plugs of various specifications according to claim 8, characterized in that The gear transmission mechanism comprises two racks arranged in parallel with each other at intervals, and a plurality of gears meshing with the racks; each of the racks is provided with teeth on two surfaces facing away from each other, and a bending portion is bent in the middle so that the teeth on the two surfaces are in the same horizontal plane; the grounding pin is provided with two gears meshing with the teeth on the same side of the two racks, and the two non-grounding pins are provided with a gear meshing with the teeth on the other side of the corresponding rack.

10. The charger with plugs of various specifications according to claim 9, characterized in that The grounding pin is provided with a first slot and a block between one end meshing with the rack and the second mounting frame, which can be engaged and limited.

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