Patent Application
20150323170
The present invention relates to a waterproof structure of a handheld lamp, and more particularly to the waterproof structure that provides a waterproof function of the handheld lamp by covering a thermosetting gel onto the handheld lamp through an injection method.
Various different types of flashlights used in our daily life or work or handheld lamps used for maintenance and repair are developed to meet the requirement of our daily use Conventional light bulbs not just have the disadvantages of large volume, high power consumption, short life, but also requires a troublesome and time-consuming recycle process. As science and technology advance, conventional light bulbs are gradually replaced by LED lamps to achieve a better environmental protection effect.
Since LED lamps have the features of low heat generation, high power-saving effect and long service life, therefore different ways of supplying power to the lamp are developed. To improve the convenience of use, the LED lamp is designed with a USB port, so that the lamp can be connected to a computer device through a transmission line or connected to a general socket for charging the lamp through an adapter. However, connectors of the electronic products usually do not come with the waterproof function, so that moisture in the air may enter into the connectors and causes a short circuit, particularly in a humid or wet environment. As a result, the transmission is affected, or even worse the components inside the lamp are damaged.
To overcome problem of the poor waterproof effect of the USB port of the LED lamp, R.O.C. Pat. No. M454512 has disclosed a “waterproof USB lamp” comprising a tube, a first through hole and a second through hole formed on the tube, a circuit module installed in the tube and having a switch portion and a USB interface aligned corresponsive to the first through hole and the second through hole respectively, a first waterproof plug plugged into the first through hole and having a latch groove formed on a side of the first waterproof plug and corresponsive to the switch portion for latching into the first through hole, a slot formed at the first waterproof plug, such that the switch portion tightly attaches the first waterproof plug through the slot, and a second waterproof plug plugged into the second through hole to prevent liquid from entering. However, the second through hole with the embedded USB interface are plugged by a movable second waterproof plug only, so that when the USB interface is used, it is necessary to remove the second waterproof plug in order to connect a USB connector for charging. After removing and plugging the second waterproof plug for several times, the second waterproof plug may not be able to maintain the waterproof effect due to elastic fatigue.
In view of the aforementioned drawback of the USB port of the conventional lamp that is plugged by a movable waterproof plug only and moisture may enter from the gap after the movable waterproof plug has been used for a while and become elastic fatigue or damaged, and still have poor waterproof effect, it is a primary objective of the present invention to coat a thermosetting gel onto the port soldered onto a circuit board to prevent moisture or dust from entering through the port.
Another objective of the present invention is to form a cover by injecting a thermosetting gel, so that the cover is integrally formed and packaged onto the base to skip the assembling of the cover and the base and lower the manufacturing cost.
To achieve the aforementioned objectives, the present invention provides a waterproof structure of a handheld lamp, and the waterproof structure is installed in a power socket, and the power socket comprises:
a base, having an accommodating space, two penetrating holes and a slot; a circuit board, installed in the accommodating space of the base; a port, soldered to the circuit board, and disposed at a position corresponding to the slot of the base; a thermosetting gel, coated onto the port; two first electronic wires, each having an end soldered to the circuit board, and the other end soldered to an electrical storage device; two contact points, disposed at positions corresponding to the penetrating holes of the base respectively; two second electronic wires, each having an end soldered to the circuit board, and the other end soldered to the contact point; and a cover, formed by injecting the thermosetting gel, and packaged onto the base. Therefore, the circuit board and the port are packaged into the base and the cover, so that the interface of the port will not produce any gap, and moisture or dust will not enter from the interface to achieve the waterproof and dustproof effects.
The waterproof structure of a handheld lamp in accordance with the present invention is manufactured by the following method comprising the steps of: soldering a port to a circuit board, coating a thermosetting gel onto the port and the circuit board and the soldered portion of the port by injection after the soldering takes place and just keeping the interface of the port, soldering an end of the first electronic wire to the circuit board, and soldering an end of the second electronic wire to the contact point, putting the soldered contact point and second electronic wire into a base, soldering the other end of the second electronic wire to the circuit board, putting the soldered circuit board into the base, and finally integrally forming a cover by a thermosetting gel through an injection method, so that the cover is packaged onto the base, and the other end of the first electronic wire is passed through the base to facilitate soldering with the electrical storage device.
The specific structure and practical functions of the present invention will be apparent with the description of the following preferred embodiment accompanied with the illustration of related drawings as follow.
The technical characteristics, contents, advantages and effects of the present invention will be apparent with the detailed description of a preferred embodiment accompanied with related drawings as follows.
With reference to
With reference to
S11: Solder a port 63 to a circuit board 61.
S12: Cover the port 63 by a thermosetting gel 64 by an injection method after the soldering takes place, and the covering range includes the port 63 and the soldered portion of the port 63 and the circuit board 62 and just keeping the interface 631 of the port 63.
S13: Solder an end of the first electronic wire 65 to the circuit board 62.
S14: Solder an end of the second electronic wire 67 to the contact point 66.
S15: Put the soldered contact point 66 and the other end of the second electronic wire 67 into the base 61, and then solder the second electronic wire 67 to the circuit board 62.
S16: Put the soldered circuit board 62 into the base 61.
S17: Integrally form a cover 68 by a thermosetting gel by an injection method, such that the formed cover 68 can be packaged into the base 61, and the other end of the first electronic wire 65 is passed through the base 61 to facilitate soldering am electrical storage device 5 (not shown in the figure).
Wherein, the port 63 is a micro universal serial bus (Micro USB) port.
Wherein, the thermosetting gel 64 is a material selected from the group consisting of acrylonitrile butadiene styrene (ABS), polyethylene (PE), polycarbonate (PC), polytetrafluoroethylene (PTFE), polyethylene terephthalate (PET), ethylene/vinyl acetate (EVA), polymethyl methacrylate (PMMN), polyoxymethylene (POM), styrene acrylonitrile (SAN), polystyrene (PS, EPS, ASA), polyamide (PA), polypropylene (PP), polyvinyl chloride (PVC) and polyurethane (PUR).
Wherein, the thermosetting gel of the cover 68 is a material selected from the group consisting of acrylonitrile butadiene styrene (ABS), polyethylene (PE), polycarbonate (PC), polytetrafluoroethylene (PTFE), polyethylene terephthalate (PET), ethylene/vinyl acetate (EVA), polymethyl methacrylate (PMMN), polyoxymethylene (POM), styrene acrylonitrile (SAN), polystyrene (PS, EPS, ASA), polyamide (PA), polypropylene (PP), polyvinyl chloride (PVC) and polyurethane (PUR).
During assembling, the circuit board 62 with the soldered first electronic wire 65, second electronic wire 67 and port 63 and covered by the thermosetting gel 64 by the injection method is put into the accommodating space of the base 61 (refer to
With reference to
With reference to
In summation of the description above, the present invention adopts thermosetting gel to achieve the waterproof effect of the handheld lamp and improves over the conventional lamp, and the invention complies with patent application requirements, and thus is duly filed for patent application.
While the invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.
