High-protection power supply clip assembly, power adapter and electric load

Abstract

The utility model relates to power supply and electricity taking device technical field especially relates to a high convenience protection type power supply clamp subassembly, power adapter and electric load. A high convenience protection type power supply clamp subassembly, include: clamp body, circuit board, electric connection is installed on the clamp body, SMD fuse, is pasted and is welded on the circuit board, and first wire body, one end is connected on the circuit board. The scheme, realized both in the narrow space more convenient use, can reduce the fuse easy to appear and cannot produce protection condition, effectively avoid the accident situation, reduce the potential safety hazard.

Description

Technical Field

[0001] This utility model relates to the field of power supply and power extraction device technology, and in particular to a convenient and highly protected power clamp assembly, power adapter and electrical load. Background Technology

[0002] In the industry, electrical loads that draw power from batteries typically use a power supply device or adapter connected to the battery terminals, such as electrical loads that need to draw power from a car battery.

[0003] See Figure 1 This is a power adapter based on existing technology, including a power plug, a fuse, and two alligator clips, one for the positive terminal and one for the negative terminal. The fuse is coated with adhesive to form a fuse module. The fuse works by blowing when an overload occurs in the conductor, stopping the power transmission process and thus providing protection.

[0004] However, the aforementioned existing technologies still have the following shortcomings: it is inconvenient to draw power from the battery in a confined space, and in the event of a short circuit, the fuse may fail and protection may not be provided, resulting in high safety risks. Utility Model Content

[0005] The purpose of this utility model is to provide a convenient and highly protective power clamp assembly, power adapter, and electrical load to address the shortcomings of existing technologies. It aims to enable more convenient use in confined spaces, reduce the likelihood of fuses failing to provide protection, effectively prevent accidents, and reduce safety hazards.

[0006] This utility model achieves the above objectives through the following technical solutions: A convenient and highly protected power clamp assembly includes: a clamp body, a circuit board, an overcurrent protection element, and a first wire. Wherein: The circuit board is electrically mounted on the clamp. Overcurrent protection components are soldered onto the circuit board; The first wire is connected at one end to the circuit board.

[0007] Furthermore, the overcurrent protection element may be a standard fuse, an SMD fuse, or an SMD resettable trip unit that can be soldered onto the circuit board.

[0008] Furthermore, the input terminal of the circuit board is electrically connected to the clamp; the SMD fuse is soldered onto the circuit board, and the input terminal of the SMD fuse is electrically connected to the output terminal of the circuit board; the output terminal of the SMD fuse is electrically connected to one end of the first wire.

[0009] Furthermore, the clamp body includes: A first clamping part is provided with a first electrical contact position and a fastening screw, wherein the first electrical contact position has a threaded hole for threaded connection by the fastening screw; and The second clamp is provided with a second electrical contact position; The convenient and highly protective power clip assembly also includes an adhesive sleeve for enclosing the circuit board and the SMD fuse.

[0010] Furthermore, the input terminal of the circuit board is electrically connected to an electrical connector. The electrical connector extends from one end of the rubber-coated sleeve and is aligned with the screw hole, and is then fastened to the first electrical connector by the fastening screw. One end of the first wire is electrically connected to the output terminal of the SMD fuse and leads out from the other end of the rubber sleeve.

[0011] Furthermore, the input terminal of the circuit board is electrically connected to a soldering part, which extends from one end of the rubber-coated sleeve and is soldered to the second electrical contact; one end of the first wire is electrically connected to the output terminal of the SMD fuse and extends from the other end of the rubber-coated sleeve.

[0012] Furthermore, the SMD fuse is replaced with an SMD resettable trip switch.

[0013] A power adapter, comprising: Negative clamp, electrically connected to a second wire; The power plug, with its output end electrically connected to the end of the second wire furthest from the negative clamp; and The convenient and highly protected power clip assembly described in any of the foregoing items; The input end of the power plug is electrically connected to the end of the first wire that is away from the circuit board.

[0014] An electrical load is provided with a power socket into which a power plug is inserted, wherein the power plug is the power plug of the aforementioned power adapter.

[0015] An electrical load includes the aforementioned power adapter, and the electrical load is provided with a power socket into which the power plug is inserted.

[0016] The beneficial effects of this utility model are: By using an SMD fuse and integrating it into the circuit board of the clamp, the wire connection between the SMD fuse and the clamp is effectively eliminated, reducing the overall size and wire consumption, while also improving ease of use in confined spaces. Furthermore, since the wires only exist after the output of the SMD fuse—between the SMD fuse and the power plug, and between the power plug and the negative clamp—even in low-temperature environments where exposed wires cause a short circuit, the fuse can detect the large short-circuit current, activating the SMD fuse and providing protection, effectively reducing safety hazards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the existing technology.

[0018] Figure 2 This is a schematic diagram of the power adapter described in this utility model.

[0019] Figure 3 This is a schematic diagram of a convenient and highly protective power clamp assembly according to the present invention.

[0020] Figure 4 for Figure 3 A structural decomposition diagram.

[0021] Figure 5 for Figure 4 A further structural decomposition diagram.

[0022] Figure 6 This is another structural schematic diagram of the convenient and highly protective power clamp assembly described in this utility model.

[0023] Figure 7 for Figure 6 A structural decomposition diagram.

[0024] Figure 8 This is a schematic diagram of the internal structure of the rubber-coated sleeve described in this utility model.

[0025] Figure 9 This is a schematic diagram of another internal structure of the rubber-coated sleeve described in this utility model.

[0026] Figure 10 This is a schematic diagram of another internal structure of the rubber-coated sleeve described in this utility model.

[0027] Figure 11 This is a schematic diagram of another internal structure of the rubber-coated sleeve described in this utility model.

[0028] Figure 12 This is yet another structural diagram of the internal structure of the rubber-coated sleeve described in this utility model.

[0029] Figure 13 This is a schematic diagram of the structure of the circuit board after the adhesive sleeve of this utility model is wrapped around it.

[0030] Figure 14 This is a schematic diagram of the structure after the welding part on the rubber-coated sleeve is welded to the second electrical connection on the clamp.

[0031] The reference numerals in the figures include: 100—Power adapter; 101—Convenience and high protection power clip assembly; 102—Positive clamp; 103—Negative clamp; 104—Power plug; 105—Second wire. 1—clamp body, 11—First clamping part, 12—Second clamping part, 111—First electrical contact, 112—Fasting screw, 113—Screw hole 121—Second electrical connection; 2— Rubber-coated sleeve, 21—Circuit board, 22—SMD fuse, 23—First wire body, 211—Electrical connector; 212—Welding part; 31—First conductor, 32—Second conductor, 33—Third conductor, 34—Safety module, 35—Alligator clip. Detailed Implementation

[0032] The technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It is understood that the accompanying drawings are provided for reference and illustration only, and are not intended to limit the present invention. The connection relationships shown in the accompanying drawings are only for clear description and do not limit the connection method.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The terminology used in this specification is only for the purpose of describing specific embodiments and is not intended to limit the invention.

[0034] In related technologies, automobiles typically need to be equipped with electrical appliances (such as chargers, battery detectors, or cigarette lighters) and their matching power cords or adapters. For example, the link is https: / / www.amazon.com / SCCKE-Cigarette-Alligator-Crocodile-Connector / dp / B07JB4SVY8?content-id=amzn1.sym.2da95b6c-f59a-4699-bc43-d0ff036c6388%3Aamzn1.sym.2da95b6c-f59a-4699-bc43-d0ff036c6388&crid=419SGO0PYCVZ&cv_ct_cx=clamp+with+fuse&keywords=clamp+with+fuse&pd_rd_i=B07JB4SVY8&pd_rd_r=09bd4e71-4677-4c01-85c7-ca0e70 7c9105&pd_rd_w=l0y6H&pd_rd_wg=h05FR&pf_rd_p=2da95b6c-f59a-4699-bc43-d0ff036c6388 &pf_rd_r=21WQ1VKV5198YP7AHYWR&qid=1753062118&sbo=RZvfv%2F%2FHxDF%2BO5021pAnSA%3D A car cigarette lighter adapter is disclosed in %3D&sprefix=clamp+with+fu%2Caps%2C344&sr=1-3-6024b2a3-78e4-4fed-8fed-e1613be3bcce-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9zZWFyY2hfdGhlbWF0aWM&psc=1, and its schematic structure is as follows. Figure 1 As shown, it includes: The system includes a power plug 104, a fuse, and two alligator clips 35, one for the positive terminal and one for the negative terminal. The fuse is coated with adhesive to form a fuse module 34. One end of the fuse (e.g., an automotive fuse) is connected to the positive terminal clip 102 via a first wire 31, and the other end is connected to the input terminal of the power plug 104 via a second wire 32. The output terminal of the power plug 104 is connected to the negative terminal clip 103 via a third wire 33. The first wire 31 needs to be of sufficient length to ensure adequate distance between the positive terminal clip 102 and the fuse. Otherwise, the fuse module 34 might be too close to the positive terminal clip 102, hindering or limiting its flexible clamping, for example, making it impossible to insert the positive terminal clip 102 into a confined space due to the fuse module 34 being too large. The principle of this existing design is that when the conductor is overloaded, the fuse inside the fuse module 34 will burn out, stopping the entire power transmission process and providing protection. However, this design has two drawbacks. First, the fuse module 34 still occupies space, making it inconvenient to use in small spaces such as inside a car. Second, it is more prone to short circuits in winter, and the fuses are more likely to fail, posing a significant safety hazard.

[0035] After repeated research, the inventors discovered that the power cords in the existing design (including the first conductor 31 to the third conductor 33) are generally made of PVC material. In extreme weather or abnormal conditions, the temperature that the conductors can withstand is easily lower than the material's operating temperature, causing the outer sheath of the conductors to easily break or lose its protective function, which can easily lead to short circuits. If the exposed copper cores of the second conductor 32 and the third conductor 33 short circuit, the fuse can be activated. However, if the exposed copper core of the first conductor 31 comes into contact with the exposed copper core of the third conductor 33 and causes a short circuit, the large current of the short circuit cannot flow through the fuse, causing the fuse to fail to provide protection. As a result, the power cord and all nearby flammable materials will burn out, posing a high safety hazard. Low temperatures can easily damage the outer sheath of wires. For example, SAB.Cable has specified that its PVC material can only withstand -40°C, while the temperature range of general PVC is around -40°C. However, winters in North America and Russia can see extreme weather conditions far below -40°C. For instance, Oymyakon in Sakhalin, Russia, experienced temperatures below -40°C in January 2025 (see link https: / / www.sabcable.com / pdfs / datasheets / tech-pvc.pdf for details).

[0036] Therefore, embodiments of this application provide a convenient and highly protective power clip assembly 101 and a power cord assembly, which can be used more conveniently in confined spaces, and can avoid the situation where the fuse is unable to provide protection in low temperature environments or abnormal conditions, effectively preventing accidents and reducing safety hazards.

[0037] like Figures 2-14 As shown, this embodiment of the invention provides a convenient and highly protective power clip assembly 101, including: a clip body 1, a circuit board 21, an SMD fuse 22, and a first wire 23. Wherein: The circuit board 21 is soldered to the clamp 1 at one end; or it can be detachably electrically mounted to the clamp 1, such as by screws. The SMD fuse 22 is soldered to the end of the circuit board 21 away from the clamp 1 to achieve a miniaturized overall structure of the clamp 1 and the fuse. The first wire 23 is soldered to the circuit board 21 at one end or plugged into the circuit board 21 via a terminal. Specifically, the input terminal of the SMD fuse 22 is connected to the output terminal of the circuit board 21, and the output terminal of the SMD fuse 22 is connected to one end of the first wire 23. That is, the current flows from the clamp 1 on the battery terminal through the circuit board 21 into the fuse, then from the fuse to the first wire 23, and then into the power plug 104 to finally flow to the electrical load or other energy storage device.

[0038] By setting the fuse as an SMD fuse 22 and embedding it on the circuit board 21 of the clamp 1, the wire connection between the SMD fuse 22 and the clamp 1 is effectively eliminated, reducing the overall size and wire consumption, and improving the convenience of use in confined spaces. On the other hand, since the wires only exist after the output terminal of the SMD fuse 22, that is, between the SMD fuse 22 and the power plug 104, and between the power plug 104 and the negative clamp 103, even if a short circuit occurs due to exposed wires in a low-temperature environment, the fuse can still detect the large short-circuit current, activate the SMD fuse 22 and provide protection, effectively reducing safety hazards.

[0039] The clamp 1 includes a first clamping part 11 and a second clamping part 12. The first clamping part 11 is provided with a first electrical contact 111 and a fastening screw 112, and the first electrical contact 111 has a threaded hole 113 that is threadedly connected by the fastening screw 112; the second clamping part 12 is provided with a second electrical contact 121.

[0040] The convenient and highly protective power clip assembly 101 also includes an adhesive sleeve 2 for wrapping the circuit board 21 and the SMD fuse 22.

[0041] Implementation 1: The input terminal of the circuit board 21 is electrically connected to an electrical connector 211. The electrical connector 211 extends from one end of the rubber-coated sleeve 2 and aligns with the screw hole 113 on the first electrical contact 111, and is then fastened to the first electrical contact 111 by a fastening screw 112. One end of the first wire 23 is electrically connected to the output terminal of the SMD fuse 22 and extends from the other end of the rubber-coated sleeve 2.

[0042] Implementation 2: The input terminal of the circuit board 21 is electrically connected to a soldering part 212, which extends from one end of the adhesive sleeve 2 and is soldered to the second electrical contact 121. One end of the first wire 23 is electrically connected to the output terminal of the SMD fuse 22 and extends from the other end of the adhesive sleeve 2.

[0043] By setting a first electrical contact 111 and a second electrical contact 121 on the clamp body 1, it is possible to realize an implementation method in which the clamp body 1 includes two electrical connections, namely implementation one and implementation two, which effectively improves applicability and makes it convenient for different customers and manufacturers to choose different wiring methods and requirements. There is no need to separately manufacture pliers with two different connection methods, which reduces storage costs.

[0044] A power adapter 100 includes a convenient, highly protected power clip assembly 101 as described in any of the preceding claims, and further includes a power plug 104 and a negative clamp 103. The input end of the power plug 104 is connected to the end of a first wire 23 away from the circuit board 21, and the output end of the power plug 104 is connected to the negative clamp 103 via a second wire 105. Specifically, the clamp 1 serves as a positive clamp 102.

[0045] An electrical load is provided with a power socket into which the power plug 104 is mated. Optionally, the electrical load is equipped with the power adapter 100.

[0046] The fuse in this solution can be a one-time fuse, i.e., SMD fuse 22. Alternatively, SMD resettable trip circuit breaker or surface mount resettable fuse can be used to create a customer-resettable fuse, i.e., a non-one-time fuse.

[0047] Because it uses SMD fuse 22 or SMD resettable trip device for safety protection, the overall size can be greatly reduced and it can be stored in the clamp 1, becoming an integrated design of clamp and protector.

[0048] like Figure 8 An SMD fuse 22 or an SMD resettable trip switch is installed on circuit board 21.

[0049] like Figure 9 The first wire 23 (i.e. the power wire) is inserted into the circuit board 21, and then the first wire 23 is soldered onto the circuit board 21.

[0050] like Figure 10 ,Apart from Figure 9 In addition to this method, the first wire 23 can also be directly soldered onto the circuit board 21.

[0051] like Figure 11The soldering part 212 can be a terminal piece. The soldering part 212 can be inserted into the circuit board 21 and soldered on, or the soldering part 212 can be directly soldered onto the circuit board 21.

[0052] like Figure 12 ,Apart from Figure 11 In addition to the above methods, the first wire 23 and the welding part 212 can be directly welded to the SMD fuse 22 or the SMD resettable trip device.

[0053] like Figure 13 The SMD fuse 22 or SMD resettable trip device, circuit board 21, part of the soldered part 212 or electrical connector 211, and the end of the first wire 23 near the circuit board 21 are protected by injection molding (including plastic shell, five-water shell or other material protective shell). That is, the rubber sleeve 2 is formed by injection molding.

[0054] like Figure 14 The rubber-coated sleeve 2 formed after injection molding will have protruding terminals (i.e., welding parts 212 or electrical hooks 211) that can be welded to the first electrical contact 111 or the second electrical contact 121 of the clamp 1. Figure 14 This is a schematic diagram of the structure after the welding part 212 on the rubber-coated sleeve 2 is welded to the second electrical contact 121 on the clamp 1, wherein the end of the first wire 23 is clamped by the wire clamping piece on the second clamp 12.

[0055] This convenient and highly protected power clip assembly 101 and power adapter 100 solution eliminates the need for a first wire 23 as a lead connection between the clip 1 and the fuse. The first wire 23 is only used as a lead between the fuse and the power plug 104. Even if the first wire 23 short-circuits due to external force or low temperature, or if a component at the rear of the first wire 23 (such as the power plug 104) short-circuits, or if the second wire 105 short-circuits, the fuse (including the SMD fuse 22 or SMD resettable trip) will still provide protection. This convenient and highly protected power clip assembly 101 and power adapter 100 solution is suitable for chargers (power adapter 100), battery detectors, and other battery-powered loads, or peripheral electrical appliances that use battery power. Specifically, this solution utilizes a convenient and highly protective power clamp assembly 101 and a clamp body 1 of a power adapter 100. The clamp body 1 serves as a positive clamp 102 clamping the positive terminal of the battery, a negative clamp 103 clamping the negative terminal of the battery, and a power plug 104 plugging into the power socket of the electrical load to enable the electrical load to draw power from the battery.

[0056] In the specification and claims of this application, the terms "comprising / including" and "having / including" and variations thereof are used to specify the presence of the stated features, values, steps or components, but do not exclude the presence or addition of one or more other features, values, steps, components or combinations thereof.

[0057] Some features of the present invention are described in different embodiments for clarity; however, these features may also be described in combination in a single embodiment. Conversely, some features of the present invention are described only in a single embodiment for brevity; however, these features may also be described individually or in any suitable combination in different embodiments.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A convenient and highly protective power clip assembly, characterized in that, include: Clamp body (1); The circuit board (21) is electrically mounted on the clamp (1); Overcurrent protection components are soldered onto the circuit board (21); and The first wire (23) is connected at one end to the circuit board (21).

2. The convenient and highly protective power clip assembly according to claim 1, characterized in that, The overcurrent protection element includes an SMD fuse (22).

3. The convenient and highly protective power clip assembly according to claim 2, characterized in that, The input terminal of the circuit board (21) is electrically connected to the clamp (1); the SMD fuse (22) is soldered onto the circuit board (21), and the input terminal of the SMD fuse (22) is electrically connected to the output terminal of the circuit board (21); the output terminal of the SMD fuse (22) is electrically connected to one end of the first wire (23).

4. The convenient and highly protective power clip assembly according to claim 2, characterized in that, The clamp (1) includes: The first clamping part (11) is provided with a first electrical contact (111) and a fastening screw (112). The first electrical contact (111) has a threaded hole (113) threadedly connected to the fastening screw (112); and The second clamp (12) is provided with a second electrical contact (121). The convenient and highly protective power clip assembly also includes an adhesive sleeve (2) for enclosing the circuit board (21) and the SMD fuse (22).

5. The convenient and highly protective power clip assembly according to claim 4, characterized in that, The input end of the circuit board (21) is electrically connected to an electrical connector (211). The electrical connector (211) extends from one end of the rubber sleeve (2) and is aligned with the screw hole (113). It is then fastened to the first electrical connector (111) by the fastening screw (112). One end of the first wire (23) is electrically connected to the output end of the SMD fuse (22) and leads out from the other end of the rubber sleeve (2).

6. The convenient and highly protective power clip assembly according to claim 4, characterized in that, The circuit board (21) has an input terminal electrically connected to a soldering part (212), which is led out from one end of the rubber sleeve (2) and soldered to the second electrical contact (121); one end of the first wire (23) is electrically connected to the output terminal of the SMD fuse (22) and led out from the other end of the rubber sleeve (2).

7. The convenient and highly protective power clip assembly according to claim 2, characterized in that, The SMD fuse (22) is replaced with an SMD resettable trip unit.

8. A power adapter, characterized in that, include: The negative clamp (103) is electrically connected to a second wire (105). The power plug (104) is electrically connected to the end of the second wire (105) away from the negative clamp (103); and The convenient and highly protective power clip assembly according to any one of claims 1-7; The input end of the power plug (104) is electrically connected to the end of the first wire (23) away from the circuit board (21).

9. An electrical load, characterized in that, A power socket is provided for insertion of a power plug (104), which is the power plug (104) of the power adapter of claim 8.

10. An electrical load, characterized in that, The power adapter of claim 8 is provided on the electrical load, wherein the power plug (104) is fitted into a power socket.

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