CN202978326U - Charging cable - Google Patents

Abstract

The utility model is suitable for the field of charging equipment, and provides a charging cable, which includes a wire body. The two ends of the wire body are respectively provided with a USB plug and a charging plug. The USB plug includes a connector and a housing. The connector is fixed on the housing, and a circuit board is fixedly arranged in the housing, the connector is electrically connected to the circuit board, the wire body is electrically connected to the circuit board, and the circuit board is provided with a useful A voltage limiting module for limiting charging voltage. In the charging cable provided by the application, a circuit board is arranged in the USB plug, and a voltage limiting module and an indicator light are arranged on the circuit board. The voltage limiting module can provide voltage limiting protection for the rechargeable battery and protect the rechargeable battery from being damaged; The light enables the user to know the charging state of the rechargeable battery in time, which brings convenience to the user.

Description

charging cable

technical field

The utility model belongs to the field of charging equipment, in particular to a charging cable.

Background technique

With the rapid development of electronic technology, there are more and more types of electronic products, such as MP3, mobile phones, computers and tablet computers, etc., which are commonly used by people. These electronic products have become an indispensable part of people's daily life in the current society. , as we all know, these electronic products need to be equipped with charging equipment to charge them. Generally, each electronic product is equipped with a charging cable. Because the electronic product itself is equipped with a charging protection module, it has an automatic voltage limiting function when charging the battery. , so as to protect the battery from being damaged. For some electronic products that do not have a protection circuit, such as rechargeable flashlights, etc., when the charger is used to charge the battery directly through the charging cable, because there is no protection circuit to limit the voltage, it is easy to cause damage to the battery and reduce the battery life. service life, and there is no indicator light on the charging cable to show the charging status.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a charging cable, which can not only provide voltage limiting protection for the rechargeable battery, but also display the charging state in time.

The utility model is achieved in the following way: a charging cable, including a wire body, USB plugs and charging plugs are respectively provided at both ends of the wire body, the USB plug includes a connector and a housing, and the connector is fixed In the housing, a circuit board is fixed inside the housing, the connector is electrically connected to the circuit board, the wire body is electrically connected to the circuit board, and the circuit board is provided with a device for limiting charging. voltage limiting module.

Specifically, the housing includes a first housing and a second housing, and a Snap structure fixed to each other.

Specifically, the buckle structure includes protrusions protruding from both sides of the first housing and snapping arms provided on both sides of the second casing, and the snapping arm is provided with a Card slots that match the card points described above.

Further, two sides of the first housing are provided with positioning grooves for cooperating with the clamping arms, and the protrusions are disposed in the positioning grooves.

Specifically, a fastener is connected between the first casing and the second casing, and a through hole for the fastener to pass through is opened on the second casing, and a useful The connecting holes for connecting the fasteners.

Specifically, the fastener is a screw, and the connecting hole is a threaded hole.

Further, an indicator light is provided on the circuit board.

Specifically, a light-transmitting window is opened on the first housing, a transparent member is fixedly arranged at the light-transmitting window, and the indicator light is located at the light-transmitting window.

Specifically, a positioning structure for fixing the circuit board is provided between the second housing and the circuit board.

Specifically, the positioning structure includes a set of positioning posts arranged on the second housing and a set of positioning holes provided on the circuit board, the set of positioning posts is matched with the set of positioning holes, the The positioning post set is snapped into the positioning hole set.

A charging cable provided by this application, the USB plug is provided with a circuit board, when the charger is connected to charge the rechargeable battery, when the voltage of the charger is higher than the voltage of the rechargeable battery, or the external voltage is unstable, it is prone to sudden change , the voltage limiting module on the circuit board can provide voltage limiting protection for the rechargeable battery, so that the voltage for charging the rechargeable battery is in a safe range and stable state, thereby protecting the rechargeable battery from being damaged and improving the service life of the rechargeable battery.

Description of drawings

Fig. 1 is an overall perspective view of a charging cable provided by an embodiment of the present invention;

Fig. 2 is a partially enlarged schematic diagram of A in Fig. 1;

FIG. 3 is a partially enlarged schematic diagram of B in FIG. 1 .

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in FIG. 1 , a charging cable provided by an embodiment of the present invention includes a wire body 1 , and a charging plug 2 and a USB plug 3 are respectively provided at both ends of the wire body 1 . The USB plug 3 includes a connector 31 and a housing 32. A circuit board 34 is fixedly arranged in the housing 32. The circuit board 34 can be a PCBA board (PCBA is the abbreviation of English Printed Circuit Board+Assembly, that is to say the space of the printed circuit board. The board is mounted on the surface mount technology, and then through the entire process of the plug-in, referred to as PCBA). One end of the connector 31 is fixed to the housing 32 and electrically connected to the circuit board 34, and the other end is exposed to the housing 32 for electrical connection with an external device capable of providing charging power, such as a charger, etc., for transmitting power to The circuit board 34 is provided with a voltage limiting module (not shown in the figure) for limiting the charging voltage on the circuit board 34 , and the line body 1 is electrically connected to the circuit board 34 . When the power supply voltage transmitted to the circuit board 34 through the USB plug 3 is higher than the voltage of the rechargeable battery, or the external voltage is unstable, if it is directly transmitted to the rechargeable battery, it will cause damage to the rechargeable battery, making it unable to store electricity or service life reduce. Through the voltage limiting module arranged on the circuit board 34, the voltage will be subjected to voltage limiting processing, and then the stable power supply in a safe range will be transmitted to the rechargeable battery through the line body 1 to charge it, which protects the rechargeable battery from being damaged. damage, ensuring the service life of the rechargeable battery.

Specifically, as shown in FIG. 1 , the casing 32 includes a first casing 321 and a second casing 322, and a device for connecting the first casing 321 and the second casing 322 is arranged between the first casing 321 and the second casing 322. The shells 322 are mutually fixed with snap-fit structures. The first housing 321 and the second housing 322 are oppositely arranged to form a cavity for accommodating the entire circuit board 34, so as to protect the circuit board 34 from being damaged. Fixing each other ensures that the circuit board 34 will not fall out.

Specifically, as shown in FIGS. 1 to 3 , the buckle structure includes protrusions 3211 protruding from both sides of the first casing 321 and snapping arms 3221 on both sides of the second casing 322. The snapping arms 3221 is provided with a slot 3222 matching with the protrusion 3211 . The protruding part 3211 can be provided with a guiding surface such as an inclined surface or an arc surface, and the clamping arm 3221 can produce a certain deformation. 3211 snaps into the card slot 3222 to achieve fixation.

Further, as shown in FIG. 1 to FIG. 3 , positioning grooves 3212 for cooperating with the locking arms 3221 are defined on both sides of the first housing 321 , and the protrusions 3211 are disposed in the positioning grooves 3212 . The setting of the positioning groove 3212 further provides a guiding effect for the clamping of the snap-in arm 3221, and the depth of the positioning groove 3212 can accommodate the entire snap-fit arm 3221. When the protruding part 3211 is fastened, the clamping arm 3221 is completely in the positioning groove 3212, so that the entire USB plug 3 looks beautiful.

Specifically, as shown in FIG. 1, fasteners are connected between the first housing 321 and the second housing 322, and the second housing 322 is provided with a through hole 3223 for the fasteners to pass through. 321 is fixedly provided with connecting holes (not shown in the figure) for connecting fasteners. In this embodiment, there are two through holes 3223 , and two connection holes are correspondingly provided on the first housing 321 , the connection holes are threaded holes, and the fasteners are screws 34 . The fastener is screwed into the connecting hole on the first housing 321 through the through hole 3223 , and cooperates with the buckle structure to fix the first housing 321 and the second housing 322 .

Further, as shown in FIG. 1 , an indicator light (not shown in the figure) is provided on the circuit board 34 , and there may be one or two indicator lights. The setting of the indicator light enables the user to keep abreast of the charging state of the rechargeable battery. When the battery is being charged, the indicator light can display a red light under the action of the corresponding driver on the circuit board 34. When the rechargeable battery is full, the indicator light Can show green lights. Of course, it is not limited to red or green lights, but also lights of other colors that can distinguish the charging state from the full state.

Specifically, as shown in FIG. 1, a light-transmitting window 3213 is opened on the first housing 321, and a transparent member 3214 is fixedly arranged at the light-transmitting window 3213. The transparent member 3214 can be a transparent plastic part or transparent glass. Such as a transparent member that can let the light of the indicator light out, the transparent part 3214 can be pasted or fixed on the first housing 321 by fasteners, and the indicator light is located at the light-transmitting window 3213, so that the light can shine through, and it is convenient for users to know in time The state of charge of the rechargeable battery.

Specifically, as shown in FIG. 1 , a positioning structure for fixing the circuit board 34 is provided between the second housing 322 and the circuit board 34 . The circuit board 34 is disposed in the cavity formed between the first housing 321 and the second housing 322 , and the positioning structure can well fix the circuit board 34 so that it is not easy to loosen.

Specifically, as shown in FIG. 1 , the positioning structure includes a positioning column set 3224 provided on the second housing 322 and a positioning hole set 341 provided on the circuit board 34, and the positioning column set 3224 is matched with the positioning hole set 341. , the positioning column set 3224 snaps into the positioning hole set 341, and fixes the circuit board 34 in the cavity formed by the first shell 321 and the second shell 322, and is not easy to slide. In this embodiment, for fixing the first housing 321 and the second housing 322 to each other, the through holes 3223 through which the fasteners pass are provided in the positioning column set 3224 . This arrangement not only can fix the circuit board 34 but also can be used to fix the first housing 321 and the second housing 322 to each other, which simplifies the structure, saves the processing steps, and brings convenience to the assembly.

In the charging cable provided by the present application, a circuit board 34 is provided in the cavity formed between the first housing 321 and the second housing 322, and the circuit board 34 is provided with a voltage limiting module that limits the charging voltage. It can provide voltage limiting protection for the rechargeable battery during charging, thereby ensuring the service life of the rechargeable battery. Moreover, the circuit board 34 is also provided with an indicator light, which can display the charging state of the rechargeable battery in time, which brings convenience to the user. The positioning structure between the second housing 322 and the circuit board 34 ensures the stability of the circuit board 34 in the cavity and ensures the reliability of use.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modification, equivalent replacement or improvement made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. charge cable, comprise the line body, the two ends of described line body are respectively arranged with USB plug and charging plug, described USB plug comprises connector and housing, and described connector is fixed in described housing, it is characterized in that, be fixedly installed circuit board in described housing, described connector is electrically connected to described circuit board, and described line body is electrically connected on described circuit board, is provided with the pressure limiting module for the restriction charging voltage on described circuit board.

2. charge cable as claimed in claim 1, is characterized in that, described housing comprises the first housing and the second housing, is provided with between described the first housing and described the second housing for described the first housing and described the second housing buckle structure fastened to each other.

3. charge cable as claimed in claim 2, it is characterized in that, described buckle structure comprises the lug boss that is convexly set in described the first housing both sides and is arranged at the snap-arms of described the second housing both sides, offers the draw-in groove that is complementary with described stuck point on described snap-arms.

4. charge cable as claimed in claim 3, is characterized in that, the both sides of described the first housing offer the location notch that coordinates for described snap-arms, and described lug boss is arranged in described location notch.

5. charge cable as claimed in claim 2, it is characterized in that, be connected with securing member between described the first housing and the second housing, offer on described the second housing for securing member and wear through hole, be fixedly installed on described the first housing and be useful on the connecting hole that connects described securing member.

6. charge cable as claimed in claim 5, is characterized in that, described securing member is screw, and described connecting hole is screwed hole.

7. charge cable as claimed in claim 2, is characterized in that, is provided with indicator light on described circuit board.

8. charge cable as claimed in claim 7, is characterized in that, offers light inlet window on described the first housing, and described light inlet window place is fixedly installed transparent member, and described indicator light is positioned at described light inlet window place.

9. charge cable as claimed in claim 3, is characterized in that, is provided with the location structure for fixing described circuit board between described the second housing and described circuit board.

10. charge cable as claimed in claim 9, it is characterized in that, described location structure comprises the reference column group that is arranged at described the second housing and the location hole group that is arranged on described circuit board, the setting that is complementary of described reference column group and described location hole group, described reference column group snaps in described location hole group.

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