Flashlight adopting bolt path positive and negative electrode conductive structure and flashlight

Abstract

The utility model provides a flashlight positive and negative electrode conductive structure adopting a bolt path, which comprises a main shell, a PCB (printed circuit board) main board, a radiating fin and a lamp panel, the PCB main board is fixedly connected with the main shell, the flashlight further comprises an embedded nut electrically connected with a power connection part on the PCB main board, the embedded nut is embedded on the PCB main board and / or the main shell, and the radiating fin is arranged on the lamp panel. The LED lamp further comprises a conduction bolt electrically connected with the power connection part of the lamp panel, the conduction bolt penetrates through the lamp panel and the cooling fin to be connected with the embedded nut, and the end, close to the PCB, of the cooling fin abuts against the main shell. The beneficial effects of the utility model are that the electrode part is conducted through the bolt, so that the problem of welding spot falling is avoided, the assembly efficiency is improved, the connection is tighter, the heat dissipation performance is improved, a larger current can pass through, and the internal space of the product is saved at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of flashlights, and specifically relates to a structure of a flashlight with positive and negative conduction through a bolt path. Background Art

[0002] Currently, in the conventional flashlight technology, copper wires are generally used as the conduction medium for the positive and negative conduction paths between the PCB main board and the lamp board. However, both ends of the copper wires need to be soldered with tin solder, which has four inevitable problems. First, during the use of the product, movement and vibration are likely to cause the solder joints to fall off. Second, soldering is time-consuming, laborious and not environmentally friendly in production. Third, the length of the copper wire is long, increasing the voltage drop loss. Fourth, the copper wire needs to be folded and wound inside, wasting a lot of internal space; in addition, a heat sink needs to be installed at the rear end of the lamp board, and the heat sink needs to be fixed to the lamp board with screws, so the overall installation process is relatively cumbersome. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is how to improve the installation efficiency of the flashlight.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] A structure of a flashlight with positive and negative conduction through a bolt path includes a main housing, a PCB main board, a heat sink and a lamp board. The PCB main board is fixedly connected to the main housing. It also includes an embedded nut electrically connected to the power connection part on the PCB main board. The embedded nut is embedded on the PCB main board and / or the main housing. It further includes a conduction bolt electrically connected to the power connection part of the lamp board. The conduction bolt passes through the lamp board and the heat sink and is connected to the embedded nut. One end of the heat sink close to the PCB board abuts against the main housing.

[0006] Preferably, an insulating sleeve is sleeved outside the screw part of the conduction bolt.

[0007] Preferably, a conductive gasket is provided between the nut part of the conduction bolt and the power connection part between the lamp boards.

[0008] Preferably, the conductive gasket is a copper gasket made of copper.

[0009] Preferably, the embedded nut includes an embedded part and an inserted part. The embedded part is embedded in the main housing, and the inserted part penetrates through the PCB main board.

[0010] Preferably, internal threads are provided inside both the inserted part and the embedded part.

[0011] Preferably, the embedded part is pre-embedded in the main housing.

[0012] A flashlight, which is installed with the structure of the above-mentioned flashlight that conducts electricity through the bolt path for positive and negative electrodes.

[0013] The beneficial effects of the present utility model are as follows: In the present utility model, the electrode part is conducted through bolts, and there will be no problem of solder joint detachment, which improves the assembly efficiency, makes the connection tighter, improves the heat dissipation performance, can also pass a larger current, and saves the internal space of the product at the same time. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic structural diagram of another perspective of the present utility model;

[0016] Figure 3 is a sectional view of the present utility model. Detailed Embodiment

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0018] Embodiment

[0019] Please refer to Figures 1 - 3 , as shown in the figure, there is a flashlight, which includes a main housing 9, a lamp head part 10, a power source 11, a PCB main board 5, a heat sink 8, and a lamp board 2. Among them, the PCB main board 5 is fixedly connected to the main housing 9, the power source 11 is a battery and is installed in the main housing. The lamp head part is prior art and will not be elaborated in detail here. There are several lamp beads 1 on the lamp board 2. In this embodiment, it is fixedly connected by screws. It also includes an embedded nut 7 electrically connected to the power connection part on the PCB main board 5. The connection between the power connection part and the embedded nut 7 can be welding or abutting. The embedded nut 7 is embedded on the PCB main board 5 and / or the main housing. In this embodiment, the embedded part is pre-buried in the main housing. It also includes a conduction bolt 3 electrically connected to the power connection part of the lamp board 2. The conduction bolt 3 passes through the lamp board 2 and the heat sink 8 and is connected to the embedded nut 7. One end of the heat sink 8 close to the PCB board abuts against the main housing. After the conduction bolt 3 is connected to the embedded nut 7, the special function of bolt tightening can fasten the lamp board 2 and the heat sink 8 together, and can ensure the firmness of the electrical connection between the power connection part of the lamp board 2 and the power connection part of the PCB main board 5. While avoiding welding, it also eliminates the connection between the lamp board 2 and the heat sink 8, thereby saving the installation process and improving the electrical conductivity.

[0020] To prevent the conduction bolt 3 from being electrically connected to the heat sink 8, in this embodiment, an insulating sleeve 6 is sleeved outside the screw part of the conduction bolt 3. The insulating sleeve 6 is made of silicone material. The insulating sleeve 6 can not only prevent electrical connection between the conduction bolt 3 and the heat sink 8, but also prevent the conduction bolt 3 from shaking, so that the bolt is not easily loosened under vibration, further ensuring the conduction effect of the conductive part.

[0021] To further ensure the conductive effect of the conduction bolt 3, in this embodiment, a conductive gasket 4 is provided between the nut part of the conduction bolt 3 and the power connection part between the lamp board 2. The conductive gasket 4 is a copper gasket 4 made of copper. The setting of the gasket 4 enables the conduction bolt 3 to achieve a better pressing effect, and at the same time can avoid the situation of point contact between the conduction bolt 3 and the power connection part of the lamp board 2 caused by the inclination of the conduction bolt 3. The setting of the gasket 4 can at least ensure multi-point contact between the conduction bolt 3 and the gasket 4, and multi-point contact between the gasket 4 and the power connection part of the lamp board 2, thereby further ensuring the conductive effect.

[0022] In this embodiment, to prevent the embedded nut 7 from having an installation offset with the PCB main board 5, the embedded nut 7 is designed to include an embedded part and an inserted part. The embedded part is embedded in the main housing, and the inserted part penetrates through the PCB main board 5. Internal threads are provided in both the inserted part and the embedded part. In this embodiment, a through hole for the inserted part to pass through is provided on the PCB main board 5, and a through hole for the conduction bolt 3 to pass through is also provided on the lamp board 2. A plurality of power connection parts or a ring-shaped power connection part are provided around the through holes on the corresponding PCB main board 5 and lamp board 2, so that the embedded nut 7 can be in good contact with the power connection part on the PCB main board 5 and the conduction bolt 3 can be in good contact with the power connection part on the lamp board 2.

Claims

1. A flashlight adopts a bolt path structure with positive and negative electrodes conducting electricity, comprising a main housing, a PCB mainboard, a heat sink and a light board, wherein the PCB mainboard is fixedly connected to the main housing, characterized in that: It also includes an embedded nut electrically connected to the power connection part on the PCB mainboard, the embedded nut is embedded on the PCB mainboard and / or the main shell, and also includes a conductive bolt electrically connected to the power connection part of the lamp board, the conductive bolt passes through the lamp board and the heat sink and is connected to the embedded nut, and one end of the heat sink close to the PCB board abuts against the main shell.

2. A flashlight according to claim 1, wherein the structure of the bolt path for positive and negative electrodes to conduct electricity is characterized in that: The outer part of the screw rod of the conductive bolt is sleeved with an insulating sleeve.

3. A flashlight according to claim 1, wherein the structure of the bolt path for positive and negative electrodes to conduct electricity is characterized in that: A conductive gasket is provided between the nut portion of the conductive bolt and the power connection portion between the lamp panel.

4. A flashlight according to claim 3, wherein the structure of the bolt path for positive and negative electrodes to conduct electricity is characterized in that: The conductive gasket is a copper gasket made of copper.

5. A flashlight according to claim 1, wherein the structure of the bolt path for positive and negative electrodes to conduct electricity is characterized in that: The embedded nut includes an embedded part and an interpenetrating part, wherein the embedded part is embedded in the main shell body, and the interpenetrating part passes through the PCB main board.

6. A flashlight according to claim 5, wherein the structure of the bolt path for positive and negative electrodes to conduct electricity is characterized in that: Internal threads are arranged inside the insertion part and the embedding part.

7. A flashlight according to claim 5, wherein the structure of the bolt path for positive and negative electrodes to conduct electricity is characterized in that: The embedded part is pre-buried in the main shell.

8. A flashlight, characterized in that: The flashlight is equipped with a structure as described in any one of claims 1 to 7 in which the positive and negative electrodes of the flashlight are electrically conductive using a bolt path.

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