A mini vehicle charger

Abstract

This utility model discloses a mini car charger, relating to the field of charger technology. It includes a car charger housing with a charging output section at the rear end. A charging management module is installed inside the car charger housing. The charging output section includes a rear housing and a rear cover. A portion of the rear housing near the rear cover is recessed to form an outer storage groove, which has a rear opening corresponding to the rear cover. A pull ring is rotatably connected to the rear housing, allowing the pull ring to rotate to be stored in the outer storage groove or to be exposed rearwards outside the outer storage groove. A pull ring drive module is also provided on the rear housing. When a user inputs a trigger signal, the pull ring is forced to rotate and expose itself rearwards outside the outer storage groove. When the car charger is plugged into the car cigarette lighter socket for power, the pull ring can be rotated out by the pull ring drive module, eliminating the need for the user to pry it out with their fingernail, making it more convenient to use.

Description

Technical Field

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

[0002] Current mini car chargers often have structures similar to the "mini car charger" proposed in the Chinese utility model with announcement number CN212875412U. It includes a shell and an internal structure inside the shell. The internal structure includes a positive electrode component, an interface component, and two circuit boards. The two circuit boards are arranged side by side and each has an independent charging circuit. One end of each circuit board is connected to the interface component, and the other end of the circuit board is soldered to the positive electrode component.

[0003] To facilitate removing the mini car charger from the car cigarette lighter socket, the designers have also included a pull ring that can be rotated for storage and for external rotation. The housing includes a body and a bottom shell. The body has a head end and a tail end. The head end is the positive end, and the tail end is the interface plug end. A pull ring is provided on the side of the tail end, and the pull ring is rotatably connected to the tail end by a plug.

[0004] However, since only a small part of the structure is exposed after the pull ring is rotated and stored, users need to use their fingernails to pry it up or use a sharp object to pry it up every time they want to rotate the pull ring to stand up, which is quite inconvenient. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution to address the aforementioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a mini car charger, including a car charger housing, a cigarette lighter socket at the front end of the car charger housing, a charging output at the rear end of the car charger housing, a charging management module inside the car charger housing, the charging output including a rear housing, a rear cover covering the rear opening of the rear housing, and an inwardly recessed outer storage groove on the rear housing near the rear cover, the outer storage groove having a rear opening corresponding to the rear cover;

[0007] A pull ring is rotatably connected to the rear housing, and the pull ring can be rotated to be stored in the outer storage slot, and the pull ring can be rotated to be exposed to the rear of the outer storage slot.

[0008] The rear housing is also equipped with a pull ring drive module, which causes the pull ring to rotate backward and protrude out of the outer storage slot when the user inputs a trigger signal.

[0009] As a further embodiment of this utility model: the pull ring drive module includes a magnetic coil winding disposed in the front housing, a control circuit, and a trigger switch disposed on the rear cover;

[0010] When the pull ring is rotated to be stored in the outer storage groove, the pull ring has a front end facing the rear housing. A magnetic block is provided on the front end facing the pull ring, and one of the magnetic poles of the magnetic block is facing forward.

[0011] When the magnetic coil winding is energized, it has two magnetic pole faces facing opposite directions, and the two magnetic pole faces of the magnetic coil winding are arranged one in front of the other.

[0012] When the pull ring is rotated to be stored in the outer storage slot, one of the magnetic pole surfaces of the magnetic coil winding coincides with the projection of one of the magnetic pole surfaces of the magnetic block in the front-back direction and is close to each other.

[0013] The trigger switch is suitable for being triggered by the user. The control circuit receives the trigger signal from the trigger switch to control the energization of the magnetic coil winding and to make the direction of the current flowing through the magnetic coil winding so that the magnetic pole direction of the magnetic field generated by the magnetic coil winding is the same as the magnetic pole direction of the magnetic block.

[0014] As a further embodiment of this utility model: the trigger switch includes a push-button switch, and a corresponding push-button hole is provided on the back cover, through which the push-button switch is exposed on the back cover.

[0015] As a further embodiment of this utility model: the trigger switch includes an inductive switch, and the induction coil of the inductive switch is close to the inside of the back cover.

[0016] As a further embodiment of this utility model: the front end of the pull ring is provided with a mounting groove, and the magnetic block is installed in the mounting groove.

[0017] As a further embodiment of this utility model: the magnetic coil winding is arranged in a columnar shape, and the length direction of the columnar magnetic coil winding is arranged front and back.

[0018] As a further embodiment of this utility model: the rear end housing is cylindrical, and the outer receiving groove is arc-shaped or ring-shaped around the outer periphery of the rear end housing.

[0019] As a further embodiment of this utility model: the rotation center line of the pull ring on the rear end housing is perpendicular to the length direction of the rear end housing.

[0020] As a further embodiment of this utility model: a pivot hole is provided on the side wall of the outer storage groove, the main body of the pull ring is arc-shaped, and the end of the pull ring is provided with a pivot that cooperates with the pivot hole.

[0021] Compared with the existing technology, the beneficial effect of this technical solution is that when the car charger is plugged into the car cigarette lighter interface to obtain power, the pull ring can be turned out by the pull ring drive module, eliminating the need for the user to pry it out with their fingernail, making it more convenient to use.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] 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, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural view of the present invention;

[0025] Figure 2 This is a schematic diagram of the drive pull ring in this utility model;

[0026] Figure 3 This is a cross-sectional view of the drive pull ring in this utility model;

[0027] Figure 4 This is a circuit diagram of the charging management module of this utility model;

[0028] Figure 5 This is the circuit diagram of the pull ring drive module of this utility model.

[0029] The corresponding labels in the attached diagram are explained as follows:

[0030] Cigarette lighter connector-1, front housing-101, front housing-102, positive electrode spring contact-103, negative electrode spring contact-104.

[0031] Charging output section-2, rear housing-201, back cover-202, charging opening-203, charging output interface-204, external storage slot-205.

[0032] Pull ring-3, mounting slot-301, magnet-302,

[0033] Pull ring drive module-4, magnetic coil winding-401, trigger switch-402. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1-5 A mini car charger includes a car charger housing, a cigarette lighter socket 1 at the front end of the car charger housing, a charging output 2 at the rear end of the car charger housing, and a charging management module disposed inside the car charger housing.

[0036] like Figure 1 As shown, the cigarette lighter connector 1 includes a cylindrical front end housing 101, and a front shell 102 covering the front opening of the front end housing is connected to the front end of the front end housing 101. The front shell 102 is arranged in an arc or hemispherical shape forward.

[0037] The front shell 102 has a forward positive opening, and the front shell 101 has a positive elastic contact 103. The front end of the positive elastic contact 103 extends forward from the positive opening out of the front shell 102.

[0038] The front housing 101 has a lateral negative electrode opening, and a negative electrode elastic contact 104 is provided inside the front housing 101. The lateral contact of the negative electrode elastic contact 104 extends laterally out of the front housing 101 from the lateral negative electrode opening.

[0039] Specifically, there are two lateral negative electrode openings, which are symmetrically arranged on opposite sides of the front end housing 101, and two corresponding negative electrode elastic contacts 104 are provided.

[0040] like Figure 1 As shown, the charging output unit 2 includes a cylindrical rear housing 201, which is continuously disposed with the front housing 101, that is, the rear housing 201 and the front housing 101 are integrally connected.

[0041] The rear housing 201 is provided with a rear cover 202 that covers the rear opening of the rear housing 201. The rear cover 202 is provided with a charging opening 203. The rear housing 201 is provided with a charging output interface 204, which corresponds to the charging opening 203.

[0042] The outer periphery of the rear housing 201 near the rear cover is recessed to form an outer storage groove 205. The outer storage groove 205 is arranged in an arc or ring around the outer periphery of the rear housing 201, and the outer storage groove 205 has a rear opening corresponding to the rear cover 202.

[0043] A pull ring 3 is rotatably connected to the rear housing 201. The rotation center line of the pull ring 3 on the rear housing 201 is perpendicular to the insertion direction of the cigarette lighter plug 1 into the vehicle cigarette lighter interface (not shown). The insertion direction of the cigarette lighter plug 1 into the vehicle cigarette lighter interface is the front-rear direction corresponding to the length direction of the front housing 101.

[0044] The pull ring 3 can be rotated to be stored in the outer storage slot 205, and the pull ring 3 can be rotated to be exposed to the outside of the outer storage slot 205. The user can conveniently pull the car charger out of the car cigarette lighter interface through the pull ring 3 exposed outside the outer storage slot.

[0045] In some embodiments, a pivot hole is provided on the side wall of the outer storage slot, the pull ring is arc-shaped, and the end of the pull ring is provided with a pivot that mates with the pivot hole. When the pull ring is rotated to be stored in the outer storage slot, the pull ring can be stored more fully in the outer storage slot. Figure 2 , 3 As shown, the pull ring 3 can be completely stored in the outer storage slot 205.

[0046] In this embodiment, when the pull ring 3 is rotated to be stored in the outer storage groove 205, the pull ring 3 has a front end mating surface facing the rear end housing. The front end mating surface of the pull ring 3 is provided with a magnetic block 302, and one of the magnetic pole surfaces of the magnetic block 302 is facing forward.

[0047] In some embodiments, the front end of the pull ring 3 is provided with a mounting groove 301, and the magnetic block 302 is installed in the mounting groove 301.

[0048] In this embodiment, a pull ring drive module 4 is also provided on the rear housing 201. The pull ring drive module 4 is configured to cause the pull ring 3 to rotate backward and protrude out of the outer storage groove 205 when the user inputs a trigger signal.

[0049] In some embodiments, the pull ring drive module 4 includes a magnetic coil winding 401 disposed in the front housing 101, a control circuit, and a trigger switch 402 disposed on the rear cover 202.

[0050] When the magnetic coil winding 401 is energized, it has two magnetic pole surfaces facing opposite directions, and the two magnetic pole surfaces of the magnetic coil winding 401 are arranged front and back.

[0051] like Figure 3 As shown, when the pull ring 3 is rotated into the outer storage slot 205, one of the magnetic pole surfaces of the magnetic coil winding 401 is aligned with one of the magnetic pole surfaces of the magnetic block 302 in the front-back direction (see attached diagram). Figure 3 The projections of the up and down orientations in the above and below directions (corresponding to the front and back directions) overlap and are close to each other, that is, the magnetic pole surface of the magnetic coil winding 401 is close to the magnetic pole surface of the magnetic block 302.

[0052] The trigger switch 402 is suitable for user activation. The control circuit receives the trigger signal from the trigger switch 402, energizes the magnetic coil winding 401, and ensures that the direction of the current flowing through the magnetic coil winding 401 is such that the magnetic pole direction of the magnetic field generated by the magnetic coil winding 401 is the same as the magnetic pole direction of the magnetic block 302. That is, the magnetic pole surfaces of the magnetic coil winding 401 corresponding to the magnetic block 302 and the magnetic pole surfaces of the magnetic block 302 corresponding to the magnetic coil winding 401 are opposite poles. The opposite poles generate magnetic repulsion, and the magnetic block 302 and the pull ring 3 are subjected to the corresponding magnetic repulsion force, causing the pull ring 3 to rotate backward and protrude out of the outer storage groove 205, allowing the user to easily pull the car charger out of the car cigarette lighter interface using the pull ring 3.

[0053] When the car charger is plugged into the car cigarette lighter socket and receives power, the pull ring 3 can be rotated out by the pull ring drive module 4, eliminating the need for the user to pry it out with their fingernail, making it more convenient to use.

[0054] In this embodiment, the components that apply rotational power to the pull ring 3 are a magnetic coil winding 401 and a magnetic block 302 that cooperate with each other. While satisfying the requirement of driving the pull ring 3, the overall cost is lower.

[0055] In some embodiments, the trigger switch is, for example, a push-button switch (not shown), with a corresponding button hole on the back cover. The push-button switch is exposed on the back cover through the button hole, and the user can trigger it by pressing the push-button switch with their finger.

[0056] like Figure 3 As shown, in some embodiments, the trigger switch 402 is, for example, an inductive switch, with its induction coil positioned close to the inside of the back cover. The user can bring their finger near the back cover to trigger the switch.

[0057] In some embodiments, the magnetic coil winding 401 is arranged in a columnar shape, and the length direction of the columnar magnetic coil winding 401 is the front-to-back direction.

[0058] In some embodiments, the charging output interface is, for example, a USB output interface.

[0059] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mini car charger, comprising a car charger housing, a cigarette lighter socket at the front end of the car charger housing, a charging output at the rear end of the car charger housing, and a charging management module disposed within the car charger housing, characterized in that, The charging output section includes a rear housing, and a rear cover is provided on the rear housing to cover the rear opening of the rear housing. The portion of the rear housing near the rear cover is recessed to form an outer storage groove, and the outer storage groove has a rear opening corresponding to the rear cover. A pull ring is rotatably connected to the rear housing, and the pull ring can be rotated to be stored in the outer storage slot, and the pull ring can be rotated to be exposed to the rear of the outer storage slot. The rear housing is also equipped with a pull ring drive module, which causes the pull ring to rotate backward and protrude out of the outer storage slot when the user inputs a trigger signal.

2. The mini car charger according to claim 1, characterized in that, The pull ring drive module includes a magnetic coil winding, a control circuit, and a trigger switch on the rear cover, all housed in the front housing. When the pull ring is rotated to be stored in the outer storage groove, the pull ring has a front end facing the rear housing. A magnetic block is provided on the front end facing the pull ring, and one of the magnetic poles of the magnetic block is facing forward. When the magnetic coil winding is energized, it has two magnetic pole faces facing opposite directions, and the two magnetic pole faces of the magnetic coil winding are arranged one in front of the other. When the pull ring is rotated to be stored in the outer storage slot, one of the magnetic pole surfaces of the magnetic coil winding coincides with the projection of one of the magnetic pole surfaces of the magnetic block in the front-back direction and is close to each other. The trigger switch is suitable for being triggered by the user. The control circuit receives the trigger signal from the trigger switch to control the energization of the magnetic coil winding and to make the direction of the current flowing through the magnetic coil winding so that the magnetic pole direction of the magnetic field generated by the magnetic coil winding is the same as the magnetic pole direction of the magnetic block.

3. The mini car charger according to claim 2, characterized in that, The trigger switch includes a push-button switch, and a corresponding push-button hole is provided on the back cover. The push-button switch is exposed on the back cover through the push-button hole.

4. The mini car charger according to claim 2, characterized in that, The trigger switch includes an inductive switch, with the induction coil of the inductive switch close to the inside of the back cover.

5. The mini car charger according to claim 2, characterized in that, The front end of the pull ring has a mounting groove, and the magnetic block is installed in the mounting groove.

6. The mini car charger according to claim 2, characterized in that, The magnetic coil winding is arranged in a cylindrical shape, with the length of the cylindrical magnetic coil winding arranged front to back.

7. The mini car charger according to any one of claims 2-6, characterized in that, The rear housing is cylindrical, and the outer storage groove is arranged in an arc or ring around the outer periphery of the rear housing.

8. The mini car charger according to claim 7, characterized in that, The rotation center line of the pull ring on the rear end housing is perpendicular to the length direction of the rear end housing.

9. The mini car charger according to claim 8, characterized in that, The outer storage slot has a pivot hole on its side wall. The pull ring has an arc-shaped body and a pivot at its end that mates with the pivot hole.

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