A vehicle-mounted charger

Abstract

The utility model relates to charger manufacturing technical field especially relates to a vehicle charger, including including shell, the both sides of shell are provided with side contact piece in pairs, the outside of shell is provided with two protection components, and protection component slides up and down along the shell axial direction, when charger is not inserted cigar lighter seat, protection component slides to the position of covering side contact piece under the action of manual, at this moment, protection component hides side contact piece, makes it with external environment isolation to effectively avoid the physical deformation of accidental collision, the surface wear of friction, prolongs the service life of charger, when the user inserts charger into car cigar lighter seat, the protection component of shell outside will first with the orifice edge contact of cigar lighter hole, along with continuing to insert, the hole wall exerts an upward thrust to protection component, pushes protection component and slides up along the shell, finally contracts the internal cavity of shell, further realizes the automatic yielding of protection component.

Description

Technical Field

[0001] This utility model relates to the field of charger manufacturing technology, and in particular to a vehicle charger. Background Technology

[0002] With the development of the automotive industry, many in-vehicle products have been developed and used. In daily life, people often carry mobile phones or other electronic products when they go out for fun. When the mobile phone or other electronic products run out of power, people often charge them in the car. However, there are few charging ports in the car, making charging inconvenient. To solve this problem, the car charger has emerged. The car charger can provide power to mobile phones or other electronic products placed in the car, allowing them to be charged at any time in the car without having to search for charging areas, which is very convenient.

[0003] In practical applications of car chargers, the charger needs to be frequently plugged into and unplugged from the cigarette lighter socket. The side contact pieces are typically made of a thin, flexible metal sheet and need to extend outwards in a cantilever beam structure to maintain reliable contact with the inner wall of the cigarette lighter. This structural characteristic results in relatively weak mechanical strength. During plugging, unplugging, and storage, the protruding side contact pieces are more prone to permanent bending deformation due to accidental impacts compared to the bottom contact pieces. Once plastic deformation occurs, it will affect the conductivity reliability of the charger after insertion. Utility Model Content

[0004] The purpose of this invention is to provide a vehicle charger to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A vehicle charger includes a housing with paired side contact pieces on both sides. Two protective components are disposed on the outside of the housing. The protective components slide along the axial direction of the housing. When the protective components slide to both sides of the side contact pieces, they cover and protect the side contact pieces. When the housing is inserted downward into the cigarette lighter socket, the edge of the socket pushes the protective components upward, and the two protective components retract radially inside the housing. At this time, the side contact pieces contact the metal contacts of the cigarette lighter.

[0007] Preferably, the protective component includes a cover that slides axially along the housing, the cover sliding to the outside of the side contact piece to protect it, and the bottom inner and outer sides of the cover are both set as bevels.

[0008] Preferably, the inner side of the cover is provided with a semi-circular groove corresponding to the shape of the side contact piece. When the cover slides to the outer side of the side contact piece, the side contact piece is housed in the semi-circular groove.

[0009] Preferably, positioning plates are fixedly installed on both sides of the cover, and a limiting groove corresponding to the movement path of the positioning plate is opened on the side wall of the outer shell. The contour of the limiting groove is an inverted L-shape. One end of the positioning plate slides in the limiting groove, and the other end passes through the limiting groove and is connected to the cover. The movement of the positioning plate and the cover is guided by the limiting groove, and at the same time, the positioning plate restricts the cover to slide on the side wall of the outer shell.

[0010] Preferably, a damping wheel is rotatably mounted on the outer side of the positioning plate, and a guide groove corresponding to the movement path of the damping wheel is opened on the side wall of the outer shell. The guide groove is a zigzag line with the top inclined inward. When the cover slides along the axis of the outer shell, the damping wheel is driven to slide in the guide groove through the positioning plate. The rotation axis of the damping wheel is perpendicular to the positioning plate. The damping wheel and the positioning plate slide in the guide groove and the limiting groove respectively, thereby restricting the sliding path and posture of the cover.

[0011] Preferably, two receiving grooves are provided on the outer side wall of the housing near its top. When the damping wheel slides to the inclined position, the cover is on the outside of the receiving groove. Under the guidance of the guide groove, the damping wheel drives the cover to slide upward and inward to the inside of the housing simultaneously through the positioning plate.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. The cover, which slides axially along the outer shell, moves to the outside of the side contact piece when the charger is not in use, thus covering it and preventing the side contact piece from being directly exposed to the external environment during transportation. This reduces the risk of deformation or surface scratches caused by collisions. Furthermore, the beveled surface at the bottom of the cover engages with the cigarette lighter opening, automatically guiding the cover upwards during insertion. Combined with the movement of the damping wheel in the inclined guide groove, the axial thrust is converted into a radial retraction force, allowing the cover to smoothly retract into the receiving groove and automatically release the protective state. This ensures the electrical connection between the side contact piece and the cigarette lighter contact and improves the ease of use of the charger.

[0014] 2. The positioning plate, damping wheel, inverted L-shaped limiting groove, and guide groove work together to ensure that the cover remains stable when sliding axially. At the same time, the rolling of the damping wheel in the guide groove provides appropriate motion resistance, which not only prevents the cover from being impacted by inertia during reciprocating motion, but also ensures that it will not slip off accidentally, thus improving the reliability and practicality of this charger. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0017] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is the third schematic diagram of the overall structure of this utility model;

[0019] Figure 4 This is one of the partial structural cross-sectional schematic diagrams of the overall structure of this utility model;

[0020] Figure 5 This is the second partial structural cross-sectional view of the overall structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the protective component structure of this utility model.

[0022] The attached figures are labeled as follows:

[0023] 1. Protective components; 11. Cover; 12. Positioning plate; 13. Damping wheel; 14. Semicircular groove;

[0024] 2. Outer shell; 3. Guide groove; 4. Limiting groove; 5. Receiving groove; 6. Side contact piece. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] A type of car charger, such as Figures 1-6As shown, the device includes a housing 2, with paired side contact pieces (6) on both sides. The housing 2 serves as the main structure, providing external protection and a mounting base for the internal circuitry and components. When the charger is inserted into the car cigarette lighter socket, the side contact pieces 6 contact the elastic metal contacts inside the socket, thus establishing an electrical connection. Two protective components 1 are provided on the outside of the housing 2. These components slide up and down along the axial direction of the housing 2. When the charger is not inserted into the cigarette lighter socket, the protective components 1 slide manually to cover the side contact pieces 6. At this time, the protective components 1 shield the side contact pieces 6, isolating them from the external environment, thereby effectively preventing damage caused by accidental collisions. Physical deformation, surface wear due to friction, and the adhesion of contaminants such as dust and liquid cause the protective component 1 on the outside of the outer shell 2 to contact the edge of the cigarette lighter hole when the user inserts the charger into the car cigarette lighter socket. As insertion continues, the hole wall applies an upward thrust to the protective component 1, pushing it to slide upward along the outer shell 2. When it slides to a preset specific position, the protective component 1 moves radially inward and finally retracts into the internal cavity of the outer shell 2, thus achieving automatic relocation of the protective component 1. After the protective component 1 retracts into the inner shell 2, the side contact piece 6 that was originally covered by it makes contact with the metal contacts inside the cigarette lighter socket.

[0027] The protective component 1 includes a cover 11 that slides axially along the housing 2. The cover 11 slides to the outside of the side contact piece 6 to protect it from deformation caused by accidental impact or surface wear caused by friction with other objects when not in use. The bottom inner and outer sides of the cover 11 are both beveled. When the charger is inserted into the cigarette lighter, the top surface of the inner wall of the cigarette lighter hole contacts the beveled surface of the bottom of the cover 11, generating a vertically upward reaction force. This force pushes the cover 11 to move upward along the axial direction of the housing 2, thereby protecting the side contact piece 6. The cover 11 makes room for contact with the cigarette lighter contacts. The bottom of the cover 11 contacts the top surface of the cigarette lighter hole wall. The reaction force causes the cover 11 to slide upward. After the charger is removed from the cigarette lighter socket, the cover 11 is manually pulled down along the outer shell 2 to return to the position covering the outside of the side contact piece 6 and re-enter the protective state. The slope at the bottom of the cover 11 can guide and reduce resistance during its contact with the cigarette lighter hole wall and when it is pushed upward, as well as during the process of being manually pulled down by the user, to ensure that the sliding action of the cover 11 on the outer shell 2 is smooth and stable.

[0028] The inner side of the cover 11 has a semi-circular groove 14 that corresponds to the shape of the side contact piece 6. When the cover 11 slides to the outside of the side contact piece 6, the side contact piece 6 is housed in the semi-circular groove 14, so that the cover 11 can wrap more tightly around the side contact piece 6. This not only improves the protection capability and effectively prevents bumps and scratches, but also makes the overall structure more compact. When the charger is inserted into the cigarette lighter and the cover 11 is pushed upward, the side contact piece 6 will detach from the semi-circular groove 14 and be fully exposed. This ensures that it can establish a connection with the metal contacts inside the cigarette lighter, ensuring a smooth and accurate switch between the protective state and the use state.

[0029] Positioning plates 12 are fixedly installed on both sides of the cover 11. A limiting groove 4 corresponding to the movement path of the positioning plate 12 is opened on the side wall of the outer shell 2. The outer shell 2 and the positioning plate 12 cooperate to constrain the sliding movement of the cover 11 on a specific path. The contour of the limiting groove 4 is an inverted L-shape. The limiting groove 4 provides a track for the movement of the positioning plate 12.

[0030] One end of the positioning plate 12 slides in the limiting groove 4, and the other end passes through the limiting groove 4 and is connected to the cover 11, so that the movement of the cover 11 is controlled by the shape of the limiting groove 4. The limiting groove 4 guides the movement of the positioning plate 12 and the cover 11. The limiting groove 4 guides the positioning plate 12 and the cover 11 connected to it to slide axially up and down first. When it reaches a specific position, that is, the corner of the L-shaped groove, it is guided to perform radial contraction or expansion movement, thereby realizing the closing and protection of the cover 11. At the same time, the positioning plate 12 restricts the cover 11 to slide on the side wall of the outer shell 2. The cooperation between the positioning plate 12 and the limiting groove 4 forms a constraint on the cover 11 in the radial direction, ensuring that the cover 11 is always in close contact with the outer wall of the outer shell 2 during the entire movement process, avoiding the problem of jamming caused by shaking or deflection, or accidentally falling off the outer shell 2, thereby ensuring the reliability of sliding and the stability of the protection function of the contact piece 6 on the opposite side.

[0031] A damping wheel 13 is rotatably mounted on the outer side of the positioning plate 12. The damping wheel 13 is connected to the positioning plate 12 by damped rotation. The surface of the damping wheel 13 is provided with a damping layer and is in close contact with the side wall of the guide groove 3, so that it can rotate relative to the positioning plate 12 while also having a certain frictional resistance. The side wall of the outer shell 2 is provided with a guide groove 3 corresponding to the movement path of the damping wheel 13. The guide groove 3 is a zigzag line with the top sloping inward. When the cover 11 is subjected to force and slides along the axial direction of the outer shell 2, it will drive the damping wheel 13 at its end to move synchronously inside the guide groove 3 through the positioning plate 12. The rotation axis of the damping wheel 13 is perpendicular to the positioning plate 12, so that the damping wheel 13 can make contact with the groove wall of the guide groove 3 with its cylindrical surface. Line contact allows for smooth rolling and sliding. The guide groove 3 radially limits the damping wheel 13, preventing it from moving outwards radially and effectively preventing it from coming out of the groove. It also constrains the cover 11 to a position close to the outer wall of the outer shell 2. The damping wheel 13 and the positioning plate 12 slide in the guide groove 3 and the limiting groove 4, respectively, restricting the sliding path and posture of the cover 11. The movement of the damping wheel 13 in the guide groove 3 and the movement of the positioning plate 12 in the limiting groove 4 work together to constrain and guide the movement of the cover 11, ensuring that the cover 11 moves along a preset path. At the same time, the damping characteristics of the damping wheel 13 provide appropriate resistance for the sliding process, preventing the cover 11 from sliding unexpectedly.

[0032] Two receiving grooves 5 are provided on the outer side wall of the outer casing 2 near its top, providing space for the cover 11 when it is in the retracted state. When the cover 11 slides upward under the push of an external force, it drives the damping wheel 13 to move in the guide groove 3 to its inclined section. The cover 11 rises to a height that is roughly level with the receiving groove 5, but it does not begin to retract radially and remains outside the receiving groove 5, continuing to slide. The damping wheel 13 moves along the inclined path of the guide groove 3 under the guidance of the guide groove 3. This inclined path drives the cover 11 to slide upward and inward towards the inner side of the outer casing 2 through the positioning plate 12, until the cover 11 is housed inside the receiving groove 5. When both covers 11 are housed in their respective receiving grooves 5, the distance between them decreases and becomes less than the diameter of the car cigarette lighter hole so that the charger can be inserted smoothly; at the same time, it is also less than the distance between the two side contact pieces 6, thus ensuring that the cover 11 does not obstruct the normal contact between the side contact pieces 6 and the contacts inside the cigarette lighter when it is in the retracted state.

[0033] The working principle of the vehicle charger provided by this utility model is as follows:

[0034] When the charger is not in use, the cover 11 is located at the bottom of the housing 2. Its two semi-circular grooves 14 wrap around the side contact piece 6 to form a physical isolation. When the cigarette lighter is inserted, the top surface of the hole wall contacts the bottom inclined surface of the cover 11, generating a reaction force that pushes the protective component 1 to slide axially and drives the positioning plate 12 to move in the inverted L-shaped limiting groove 4. At the same time, the damping wheel 13 rolls in the inclined guide groove 3, so that the cover 11 is finally embedded in the receiving groove 5 at the top of the housing 2, making the distance between the two covers 11 smaller than the diameter of the cigarette lighter hole, thus making room for the side contact piece 6 to make contact. When the charger is pulled out, the cover 11 is manually pulled down to make it move in the opposite direction. The guide groove 3 and the limiting groove 4 guide the cover 11 to return to its original position, so that it protects the side contact piece 6. The above operation ensures reliable contact during use and provides comprehensive protection during storage.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A vehicle charger, comprising a housing (2), wherein side contact pieces (6) are provided in pairs on both sides of the housing (2), characterized in that, The outer shell (2) is provided with two protective components (1). The protective components (1) slide along the axial direction of the outer shell (2). When the protective components (1) slide to both sides of the side contact piece (6), they cover and protect the side contact piece (6). When the outer shell (2) is inserted downward into the cigarette lighter socket, the edge of the orifice pushes the protective components (1) to slide upward. The two protective components (1) retract radially inside the outer shell (2). At this time, the side contact piece (6) contacts the metal contact of the cigarette lighter.

2. A vehicle charger according to claim 1, characterized in that, The protective component (1) includes a cover (11) that slides along the axial direction of the outer shell (2). The cover (11) slides to the outside of the side contact piece (6) to protect it. The bottom inner and outer sides of the cover (11) are both set as slopes.

3. A vehicle charger according to claim 2, characterized in that, The inner side of the cover (11) has a semi-circular groove (14) corresponding to the shape of the side contact piece (6). When the cover (11) slides to the outside of the side contact piece (6), the side contact piece (6) is stored in the semi-circular groove (14).

4. A vehicle charger according to claim 2, characterized in that, Positioning plates (12) are fixedly installed on both sides of the cover (11). A limiting groove (4) corresponding to the movement path of the positioning plate (12) is opened on the side wall of the outer shell (2). The contour of the limiting groove (4) is an inverted L-shape. One end of the positioning plate (12) slides in the limiting groove (4), and the other end passes through the limiting groove (4) and is connected to the cover (11). The movement of the positioning plate (12) and the cover (11) is guided by the limiting groove (4). At the same time, the positioning plate (12) restricts the cover (11) to slide on the side wall of the outer shell (2).

5. A vehicle charger according to claim 4, characterized in that, A damping wheel (13) is rotatably mounted on the outer side of the positioning plate (12). A guide groove (3) corresponding to the movement path of the damping wheel (13) is opened on the side wall of the outer shell (2). The guide groove (3) is a zigzag line with the top inclined inward. When the cover (11) slides along the axis of the outer shell (2), the damping wheel (13) is driven to slide in the guide groove (3) through the positioning plate (12). The rotation axis of the damping wheel (13) is perpendicular to the positioning plate (12). The damping wheel (13) and the positioning plate (12) slide in the guide groove (3) and the limiting groove (4) respectively, thus restricting the sliding path and posture of the cover (11).

6. A vehicle charger according to claim 5, characterized in that, Two receiving grooves (5) are provided on the outer side wall of the outer shell (2) near its top. When the damping wheel (13) slides to the inclined position, the cover (11) is outside the receiving groove (5). Under the guidance of the guide groove (3), the damping wheel (13) drives the cover (11) to slide upward and towards the inside of the outer shell (2) simultaneously through the positioning plate (12).

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