CN114006444B - Charging connection device - Google Patents

Abstract

The present invention belongs to the technical field of flashlights, and discloses a charging connection device, which includes a circuit board and a charging spring, wherein the circuit board is arranged in a housing, and the circuit board is electrically connected to a rechargeable battery, the first end of the charging spring is electrically connected to the circuit board, and the second end of the charging spring passes through the housing and can be electrically connected to a charger. The charging connection device provided by the present invention has high connection reliability between the charging spring and the circuit board, and the charger can be electrically connected to the charging spring, and the charging spring, the circuit board and the rechargeable battery are electrically connected in sequence to charge the rechargeable battery. When the flashlight is charged, the charging spring has a large heat dissipation area, and can effectively volatilize the heat in the charging process.

Description

A charging connection device

Technical Field

The present invention relates to the technical field of flashlights, and in particular to a charging connection device.

Background Art

At present, high-power flashlights have the characteristics of high power, high power consumption, large-capacity batteries, strong light, etc. Most of them are LED lamps, which are suitable for search and rescue, caving, hunting and daily lighting occasions.

For high-power flashlights, they generate a lot of heat and require efficient heat dissipation performance. When the high-power flashlight is being charged, the large charging current causes the charging connection device of the high-power flashlight to generate a lot of heat. The copper column and installation method in the conventional charging connection device structure can hardly meet the reliability required for high-current charging.

Summary of the invention

The present invention aims to provide a charging connection device which is suitable for a high-power flashlight, has good heat dissipation performance and is reliable to install.

To achieve this object, the present invention adopts the following technical solutions:

A charging connection device is arranged on a flashlight and can be electrically connected to a charger. The flashlight comprises a shell and a rechargeable battery arranged in the shell. The charging connection device comprises:

A circuit board is disposed in the housing and is electrically connected to the rechargeable battery;

A charging shrapnel, wherein a first end of the charging shrapnel is electrically connected to the circuit board, and a second end of the charging shrapnel passes through the housing and can be electrically connected to the charger.

Preferably, the shell includes a barrel body and a tail cover connected to the barrel body, the barrel body and the tail cover form an installation cavity, and the circuit board and the rechargeable battery are both arranged in the installation cavity.

Preferably, the tail cover and the charging spring are integrally injection molded.

Preferably, a charging contact is provided on the end surface of the second end of the charging spring that is placed outside the housing, and the charging contact can be electrically connected to the charger.

Preferably, a first groove is formed on the outer end surface of the tail cover, and the charging contact is arranged in the first groove.

Preferably, when one circuit board is provided, the shape of the charging spring is U-shaped, the circuit board is arranged between two opposite side walls of the charging spring, and the two opposite side walls of the charging spring are both in contact with the circuit board.

Preferably, the ends of the two opposite side walls of the charging spring are provided with a first clamping portion, a clamping hole matching and connected to the first clamping portion is opened on the circuit board, and the bottom end of the charging spring is fixedly connected to the shell.

Preferably, a second clamping portion protruding inward is provided on both side walls of the charging spring, and a second groove matching and connected with the second clamping portion is provided on the circuit board.

Preferably, when there are multiple circuit boards, the housing is provided with a first card slot for plugging in the circuit boards;

A plurality of third clamping parts are provided at the first end of the charging spring, and a plurality of connection grooves corresponding to the third clamping parts are provided on the circuit board.

Preferably, a fixing portion is bent at the second end of the charging spring, and the charging spring is fixedly connected to the housing via the fixing portion.

Beneficial effects:

The charging connection device provided by the present invention has high connection reliability between the charging spring and the circuit board. The charger can be electrically connected to the charging spring, and the charging spring, the circuit board and the rechargeable battery are electrically connected in sequence to charge the rechargeable battery. When the flashlight is charged, the charging spring has a large heat dissipation area and can effectively volatilize the heat during the charging process.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a flashlight provided in Embodiment 1 of the present invention;

FIG2 is a front view of a flashlight provided in Embodiment 1 of the present invention;

FIG3 is a cross-sectional view of a charging connection device provided in Embodiment 1 of the present invention;

FIG4 is a schematic diagram of the structure of a charging connection device provided in Embodiment 1 of the present invention;

FIG5 is an exploded schematic diagram of a charging connection device provided in Embodiment 1 of the present invention;

FIG6 is a schematic diagram of the structure of a charging spring provided in Embodiment 1 of the present invention;

FIG7 is a schematic diagram of the tail cover structure provided in Embodiment 2 of the present invention;

FIG8 is a cross-sectional view of a charging connection device provided in Embodiment 2 of the present invention;

FIG9 is a schematic diagram of the structure of a charging spring provided in Embodiment 2 of the present invention;

FIG. 10 is a schematic diagram of the structure of a charging connection device provided in Embodiment 2 of the present invention.

In the figure:

100, housing; 110, barrel; 111, button; 112, indicator light; 120, tail cover; 121, first groove; 122, first card slot; 123, USB interface; 124, lanyard hole; 125, positioning hook; 126, arc protrusion; 130, lamp holder;

200, circuit board; 210, card hole; 220, connection slot;

300, charging spring; 310, charging contact; 320, first clamping part; 330, second clamping part; 340, opening part; 350, third clamping part; 360, fixing part; 370, clearance groove.

DETAILED DESCRIPTION

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

Embodiment 1

1 to 3 , the present embodiment provides a charging connection device, which is disposed on a flashlight and can be electrically connected to a charger. The flashlight includes a housing 100 and a rechargeable battery disposed in the housing 100. The charging connection device includes a circuit board 200 and a charging spring 300. The circuit board 200 is disposed in the housing 100, and the circuit board 200 is electrically connected to the rechargeable battery. A first end of the charging spring 300 is electrically connected to the circuit board 200, and a second end of the charging spring 300 passes through the housing 100 and can be electrically connected to the charger.

The connection reliability between the charging spring 300 and the circuit board 200 is high. The charger can be electrically connected to the charging spring 300, and the charging spring 300, the circuit board 200 and the rechargeable battery are electrically connected in sequence to charge the rechargeable battery. When the flashlight is charged, the charging spring 300 has a large heat dissipation area and can effectively volatilize the heat during the charging process.

Further, at least one charging spring 300 is provided. Preferably, two charging springs 300 are provided.

In this embodiment, as shown in FIG. 1 , the housing 100 includes a barrel 110 and a tail cover 120 connected to the barrel 110. The barrel 110 and the tail cover 120 form an installation cavity, and the circuit board 200 and the rechargeable battery are both arranged in the installation cavity. Further, the tail cover 120 can be connected to the barrel 110 by a screw connection, or by other means, which will not be described in detail here.

Furthermore, the outer end surface of the tail cover 120 is provided with a USB interface 123, and the USB interface 123 is electrically connected to the circuit board 200. When the rechargeable battery of the flashlight is insufficient in power, the rechargeable battery can be directly charged using the USB interface 123, which not only enriches the charging method of the flashlight, but also is convenient and practical. Furthermore, the circuit board 200 is provided with a storage module and a data transmission module electrically connected to the storage module, and the data transmission module is electrically connected to the USB interface 123. The storage module can be used to store the usage data of the flashlight, and the data transmission module can transmit the usage data of the flashlight in the storage module to other devices through the USB interface 123 for analysis. Furthermore, a protective cover is installed at the USB interface 123. When the USB interface 123 is not in use, the USB interface 123 is sealed by the protective cover to prevent water and dust.

Furthermore, a lanyard hole 124 is provided on the outer end surface of the tail cover 120, and a lanyard is connected to the lanyard hole 124. The lanyard can be used to hang the flashlight on other objects for easy carrying and hanging.

Further, as shown in Fig. 2, a lamp holder 130 is provided at one end of the barrel body 110 facing away from the tail cover 120, and a light bulb is installed in the lamp holder 130. Preferably, the light bulb can be an LED lamp bead or other forms of light bulbs, which will not be described in detail here. Further, a button 111 for controlling the light bulb lighting switch is provided on the side wall of the barrel body 110.

Furthermore, a plurality of indicator lights 112 are provided on the side wall of the body 110. When the flashlight is in use, the number of indicator lights 112 that are constantly on is used to display the remaining power. When the flashlight is being charged, the number of indicator lights 112 that are constantly on is used to display the charging status of the indicator lights 112. Furthermore, the remaining power of the rechargeable battery and the charging status during charging can also be displayed in other forms, which will not be described in detail here.

In this embodiment, as shown in FIG3 , the second end of the charging spring 300 is disposed on the end surface outside the housing 100 and has a charging contact 310, which can be electrically connected to the charger. Specifically, the second end of the charging spring 300 passes through the tail cover 120, and the charging spring 300 is disposed on the outer side of the outer end surface of the tail cover 120 and has a charging contact 310.

Furthermore, a first groove 121 is provided on the outer end surface of the tail cover 120, and the charging contact 310 is arranged in the first groove 121. Specifically, the charging contact 310 is convexly arranged in the first groove 121, and the charging contact 310 is lower than the outer end surface of the tail cover 120, which can effectively protect the charging contact 310 and prevent the charging contact 310 from being worn. Furthermore, a protrusion that matches and connects with the first groove 121 is provided on the charger, so that the charger can be accurately connected with the charging contact 310. Furthermore, a magnetic part can be provided in the first groove 121, and a magnetic suction part that matches the magnetic part is provided on the charger. When the flashlight is charged, the magnetic suction part is magnetically attracted to the magnetic part to make the connection between the charger and the charging contact 310 more stable, which can effectively prevent the charger and the charging contact 310 from being falsely connected.

In this embodiment, the material of the barrel 110 and the tail cover 120 can be plastic material or other materials, which will not be described in detail here. Furthermore, the material of the charging spring 300 is metal material, preferably, the material of the charging spring 300 is copper. In this embodiment, the charging spring 300 and the tail cover 120 are integrally injection molded, and the charging spring 300 is firmly fixed on the tail cover 120, which enhances the waterproof sealing performance of the flashlight.

According to the design requirements of the flashlight function, the circuit board 200 can be set to one or more. In the present embodiment, the circuit board 200 is provided with one. Specifically, referring to Figures 4 to 6, the shape of the charging spring 300 is U-shaped, and the circuit board 200 is arranged between the two opposite side walls of the charging spring 300, and the two opposite side walls of the charging spring 300 are both in contact with the circuit board 200. In the present embodiment, the circuit board 200 is clamped by the charging spring 300 to fix the circuit board 200 on the tail cover 120. In the present embodiment, the circuit board 200 can be inserted from the top opening of the charging spring 300 so that the circuit board 200 is embedded in the charging spring 300. When the circuit board 200 is removed, the circuit board 200 is pulled out from the charging spring 300 along the insertion direction, which is convenient for disassembly and assembly.

Further, as shown in FIG. 6 , the ends of the two opposite side walls of the charging spring 300 are provided with a first clamping portion 320, and the circuit board 200 is provided with a clamping hole 210 that matches and connects with the first clamping portion 320. Specifically, the first clamping portion 320 is formed by bending the ends of the two side walls of the charging spring 300 toward each other, and the first clamping portion 320 is symmetrically arranged. Further, the first clamping portion 320 can be clamped with the side wall of the clamping hole 210 to fix the circuit board 200. In this embodiment, the circuit board 200 is inserted from the top opening of the charging spring 300. When the insertion end of the circuit board 200 is against the inner end surface of the tail cover 120, the first clamping portion 320 is placed in the clamping hole 210, and the first clamping portion 320 can be clamped with the side wall of the clamping hole 210 to fix the circuit board 200. When removing the circuit board 200, it is only necessary to pull the two side walls of the charging spring 300 outward to disengage the first clamping portion 320 from the clamping hole 210, and the circuit board 200 can be pulled out of the charging spring 300 along the insertion direction, which is convenient for disassembly and assembly, and has good stability. In addition, the charging spring 300 is a sheet-like symmetrical structure, and its heat dissipation effect and connection reliability are good.

Furthermore, an opening portion 340 is extended from the top of the first clamping portion 320 to the bottom of the charging spring 300, and the two opening portions 340 are bent in opposite directions. In this embodiment, the two opening portions 340 bent in opposite directions facilitate the insertion of the circuit board 200 from the top opening of the charging spring 300 and facilitate the pulling apart of the two side walls of the charging spring 300.

Furthermore, the side wall and end surface of the clamping hole 210 clamped with the first clamping portion 320 are plated with metal to further securely weld the circuit board 200 and the charging spring 300. Preferably, the metal plated on the side wall and adjacent end surface of the clamping hole 210 clamped with the first clamping portion 320 can be metal tin.

Furthermore, a second clamping portion 330 protruding inward is provided on the opposite side walls of the charging spring 300, and a second groove matching and connected with the second clamping portion 330 is provided on the circuit board 200. Specifically, the second clamping portion 330 is formed by bending the charging spring 300. In this embodiment, when the circuit board 200 is inserted from the top opening of the charging spring 300, the insertion end of the circuit board 200 abuts against the inner end surface of the tail cover 120, the first clamping portion 320 is placed in the clamping hole 210, and when the first clamping portion 320 can be clamped with the side wall of the clamping hole 210, the second clamping portion 330 is placed in the second groove, so that the charging spring 300 can better fix the circuit board 200 on the tail cover 120.

Further, the bottom end of the charging shrapnel 300 is placed outside the housing 100, and the charging contact 310 is arranged on the outer end surface of the bottom end of the charging shrapnel 300. Specifically, the bottom end of the charging shrapnel 300 is fixedly connected to the housing 100. Specifically, the outer end surface of the bottom end of the charging shrapnel 300 is placed outside the outer end surface of the tail cover 120, and the bottom end of the charging shrapnel 300 is integrally connected to the tail cover 120 by injection molding. The shape of the portion where the charging shrapnel 300 is integrally connected to the tail cover 120 by injection molding is U-shaped, so that the charging shrapnel 300 is more firmly fixed to the housing 100.

In this embodiment, the two opposite side walls of the circuit board 200 and the charging spring 300 are tightly matched and clamped with the clamping hole 210 through the first clamping portion 320, thereby improving the reliability of the connection between the charging spring 300 and the circuit board 200. The charging spring 300 has a large heat dissipation area, which ensures the charging stability and efficiency of the flashlight when charging with a large current.

Embodiment 2

The charging connection device provided in this embodiment is suitable for flashlights with multiple functions and multiple circuit boards 200. In this embodiment, two circuit boards 200 are preferably provided. Referring to Figures 7 to 10, the charging connection device provided in this embodiment is different from the first embodiment in that one of the circuit boards 200 of the flashlight is connected and fixed to the charging spring 300.

In this embodiment, as shown in FIG. 7 , a first slot 122 for plugging in a circuit board 200 is provided on the housing 100. Specifically, the first slot 122 is provided on the tail cover 120. In this embodiment, the circuit board 200 is plugged into the first slot 122, and the position of the circuit board 200 is limited by the first slot 122. Furthermore, a plurality of first slots 122 are provided and arranged in pairs, and the plurality of pairs of first slots 122 are arranged one-to-one correspondingly to the plurality of circuit boards 200.

Further, referring to FIGS. 8 to 9 , a plurality of third clamping portions 350 are provided at the first end of the charging spring 300, and a plurality of connecting slots 220 corresponding to the third clamping portions 350 are provided on the circuit board 200. Specifically, the third clamping portion 350 is formed into a hook shape by bending the charging spring 300. In this embodiment, when the circuit board 200 is inserted into the first clamping slot 122, the third clamping portion 350 is clamped into the connecting slot 220, and cooperates with the first clamping slot 122 to fix the circuit board 200 on the tail cover 120.

Furthermore, the charging spring 300 is bent multiple times to form a clearance groove 370 to reduce the contact area between the charging spring 300 and the circuit board 200, and the side wall of the charging spring 300 provided with the third clamping portion 350 is in contact with the circuit board 200. In this embodiment, the third clamping portion 350 of the charging spring 300 is conveniently separated from the connecting groove 220 by the provision of the clearance groove 370.

Furthermore, the side walls and end surfaces of the connection slot 220 that are clamped with the third clamping portion 350 are plated with metal to further securely weld the circuit board 200 and the charging spring 300. Preferably, the metal plated on the side walls and end surfaces of the connection slot 220 that are clamped with the third clamping portion 350 may be metal tin.

Further, the second end of the charging shrapnel 300 is bent to be provided with a fixing portion 360, and the charging shrapnel 300 is fixedly connected to the tail cover 120 through the fixing portion 360. Specifically, the fixing portion 360 and the tail cover 120 are integrally injection molded. Further, the charging contact 310 is arranged on the end of the fixing portion 360 placed outside the housing 100. Specifically, the fixing portion 360 is arranged in the tail cover 120, the charging contact 310 is arranged on the end face of the fixing portion 360, and the end face of the fixing portion 360 is placed on the outside of the outer end face of the tail cover 120, and the charging contact 310 is also placed in the groove opened on the outer end face of the tail cover 120.

10, the tail cover 120 is provided with a positioning hook 125, and the circuit board 200 is provided with a second card slot that matches and connects with the positioning hook 125. When the circuit board 200 is inserted into the first card slot 122, the hook is engaged with the second card slot, so that the connection between the circuit board 200 and the tail cover 120 is more stable.

Furthermore, a plurality of arc protrusions 126 are circumferentially spaced apart at one end of the tail cover 120 facing the barrel 110 , and the outer walls of the plurality of arc protrusions 126 can simultaneously abut against the inner wall of the barrel 110 , so that the barrel 110 and the tail cover 120 are aligned when connected.

The other structures of the charging connection device provided in this embodiment are the same as those in the first embodiment and will not be described in detail here.

Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims (7)

1. A charging connection device, arranged on a flashlight and capable of being electrically connected to a charger, the flashlight comprising a housing (100) and a rechargeable battery arranged in the housing (100), characterized in that it comprises: A circuit board (200) is disposed in the housing (100), and the circuit board (200) is electrically connected to the rechargeable battery; A charging spring (300), wherein a first end of the charging spring (300) is electrically connected to the circuit board (200), and a second end of the charging spring (300) passes through the housing (100) and can be electrically connected to a charger; When the circuit board (200) is provided with one, the shape of the charging spring sheet (300) is U-shaped, the circuit board (200) is provided between two opposite side walls of the charging spring sheet (300), and the two opposite side walls of the charging spring sheet (300) are both in contact with the circuit board (200); The ends of the two opposite side walls of the charging spring sheet (300) are both provided with a first clamping portion (320), the circuit board (200) is provided with a clamping hole (210) matched with the first clamping portion (320), and the bottom end of the charging spring sheet (300) is fixedly connected to the housing (100); Alternatively, when a plurality of circuit boards (200) are provided, the housing (100) is provided with a first slot (122) for plugging the circuit boards (200); The first end of the charging spring (300) is provided with a plurality of third clamping portions (350), and the circuit board (200) is provided with a plurality of connection slots (220) which are connected to the third clamping portions (350) in a one-to-one correspondence. 2. The charging connection device according to claim 1 is characterized in that the housing (100) comprises a barrel (110) and a tail cover (120) connected to the barrel (110), the barrel (110) and the tail cover (120) forming an installation cavity, and the circuit board (200) and the rechargeable battery are both arranged in the installation cavity. 3. The charging connection device according to claim 2, characterized in that the tail cover (120) and the charging spring (300) are integrally injection molded. 4. The charging connection device according to claim 2 is characterized in that a charging contact (310) is provided on the end surface of the second end of the charging spring (300) outside the housing (100), and the charging contact (310) can be electrically connected to the charger. 5. The charging connection device according to claim 4, characterized in that a first groove (121) is provided on the outer end surface of the tail cover (120), and the charging contact (310) is arranged in the first groove (121). 6. The charging connection device according to claim 1 is characterized in that a second clamping portion (330) protruding inward is provided on both side walls of the charging spring sheet (300), and a second groove matching and connected with the second clamping portion (330) is opened on the circuit board (200). 7. The charging connection device according to claim 1 is characterized in that a fixing portion (360) is bent at the second end of the charging spring sheet (300), and the charging spring sheet (300) is fixedly connected to the housing (100) through the fixing portion (360).