Charging extension cord

Abstract

The utility model relates to a charging extension cord. The charging extension cord comprises an extension cord body and a light source assembly. The extension line body comprises a first end and a second end in the length direction of the extension line body. The light source assembly is connected to the extension line body, and the luminous intensity of the light source assembly is gradually enhanced in the direction pointing to the first end and / or pointing to the second end. According to the charging extension cord, the light source assembly is arranged on the extension cord body, and the luminous intensity of the light source assembly is gradually enhanced in the direction pointing to the first end and / or the second end of the extension cord body. Therefore, along with gradual enhancement of the luminous intensity, the visibility of the charging extension line can be enhanced in an environment with a poor illumination condition, a user can conveniently see the male head and / or the female head located at the two ends of the charging extension line, and guiding and prompting effects are achieved.

Description

Technical Field

[0001] The present application relates to the field of charging extension cords, and in particular to a charging extension cord. Background Art

[0002] When the parking space is too far away or the original charging cable equipped with the charging pile is too short, the original charging cable of the charging pile will not be able to reach the charging port of the vehicle. In order to deal with this situation, users will choose to use a charging extension cable of 5 meters or 10 meters to ensure that the charging pile can charge the vehicle normally. Usually, the charging extension cable includes a male head and a female head at both ends, as well as a connecting line between the two. Among them, the female head is connected to the gun head of the original charging cable of the charging pile, and the male head is connected to the charging port of the vehicle.

[0003] At night, in underground garages or other places with poor lighting conditions, the visibility of the charging extension cord is poor, and because the charging extension cord is long and distributed in a messy manner during charging, it is easy for users to trip or misoperate, causing the male / female connector to separate from the connected charging pile or vehicle. Utility Model Content

[0004] Based on this, it is necessary to provide a charging extension cord to address the problem that the charging extension cord is easily detached during charging due to poor visibility and excessive length of the charging extension cord.

[0005] A charging extension cable, comprising:

[0006] The extension line body includes a first end and a second end along its length direction;

[0007] The light source assembly is connected to the extension line body, and the luminous intensity of the light source assembly gradually increases along the direction pointing to the first end and / or the direction pointing to the second end.

[0008] In one embodiment, the light source assembly includes a locking member and a light-emitting member, the locking member is provided with a slot extending therethrough, the slot is detachably connected to the extension line body, and the light-emitting member is disposed on a side of the locking member away from the slot.

[0009] In one embodiment, the clamping member includes a clamping portion and an elastic body connected to each other, the clamping portion is penetrated by the clamping groove, and the elastic body is used to deform so that the clamping portion is clamped to the extension line body.

[0010] In one embodiment, the clamping portion includes a first ring body and a second ring body, the second ring body is located inside the first ring body, the elastomer is connected between the inner side of the first ring body and the outer side of the second ring body, the second ring body is penetrated by the clamping groove, and the first ring body is provided with a notch connected to the clamping groove.

[0011] In one embodiment, the second ring body includes a plurality of sections surrounding the first ring body and arranged at equal distances and lengths, and the elastic body includes a plurality of elastic bodies, all of which are equally distributed between each section of the second ring body and the first ring body.

[0012] In one of the embodiments, a side of the locking member facing away from the locking slot is concavely provided with a receiving groove, and the light-emitting member is arranged in the receiving groove.

[0013] In one of the embodiments, the locking member is further provided with a heat dissipation hole, and the heat dissipation hole is communicated with the locking slot.

[0014] In one embodiment, the light source assembly includes multiple light source assemblies, each of which includes a light-emitting surface, and a positive electrode and a negative electrode connected to the light-emitting surface; the area from the positive electrode to the negative electrode in the light-emitting surface is a conductive light-emitting area, and along the direction pointing to the first end and / or pointing to the second end, the proportion of the area of ​​the conductive light-emitting area to the light-emitting surface increases one by one.

[0015] In one embodiment, the area ratio of the conductive light-emitting area to the light-emitting surface is a, which satisfies 0.55≤a≤1.

[0016] In one embodiment, the charging extension cable also includes a male head and a female head respectively connected to the first end and the second end, and a bright source component, wherein the bright source component is arranged around the outer circumference of at least one of the male head and the female head, and makes the outer circumference of at least one of them emit light.

[0017] The above-mentioned charging extension cable is provided with a light source assembly on the extension cable body, and the light intensity of the light source assembly gradually increases in the direction pointing to the first end and / or the second end of the extension cable body. Therefore, as the light intensity gradually increases, the visibility of the charging extension cable can be enhanced in an environment with poor lighting conditions, making it easier for users to see the male and / or female connectors at both ends of the charging extension cable, which plays a role of guidance and prompting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a charging extension cable provided in an embodiment of the present application.

[0019] Figure 2 A schematic diagram of a locking member provided in an embodiment of the present application from one viewing angle.

[0020] Figure 3 A schematic diagram of a locking member provided in an embodiment of the present application from another perspective.

[0021] Figure 4 A schematic diagram of a conductive light-emitting area of ​​a light source assembly provided in an embodiment of the present application.

[0022] Figure 5 A schematic diagram of a conductive light-emitting area of ​​another light source assembly provided in an embodiment of the present application.

[0023] Figure 6 A schematic diagram of a conductive light-emitting area of ​​another light source assembly provided in an embodiment of the present application.

[0024] Explanation of the reference numerals: 100, charging extension cord; 1, extension cord body; 11, first end; 12, male connector; 13, second end; 14, female connector; 2, light source assembly; 21, latching piece; 211, snap-fitting portion; 2111, first ring body; 2112, second ring body; 212, elastic body; 213, slot; 214, accommodating slot; 215, heat dissipation hole; 221, light-emitting surface; 222, positive electrode; 223, negative electrode; 224, conductive light-emitting area; 3, light source assembly. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] Vehicles may be parked in non-optimal locations for special reasons (such as temporary parking on the roadside or small space in the parking lot), resulting in the vehicle being far away from the charging pile, and the original charging cable of the charging pile being unable to reach the charging port. Some charging piles may be equipped with shorter original charging cables, resulting in the original charging cable being insufficient to meet the needs of all vehicle models and all parking locations. Based on this, users usually choose to use longer charging extension cables to meet the charging needs of the vehicle. At night, in underground garages and other places with poor lighting conditions, the visibility of the charging extension cable is poor; since the charging extension cable can be up to 10 meters long, it is scattered in a messy manner during charging, making it difficult for users to distinguish in a dark environment, and it is easy to trip and other misoperations that cause the charging extension cable to detach from the charging pile or vehicle, causing charging to be accidentally terminated.

[0027] Based on this, see Figure 1, an embodiment of the present application provides a charging extension cable 100. The charging extension cable 100 includes an extension cable body 1 and a light source assembly 2. The extension cable body 1 includes a first end 11 and a second end 13 along its length direction; the light source assembly 2 is connected to the extension cable body 1, and the luminous intensity of the light source assembly 2 gradually increases in the direction pointing to the first end 11 and / or the second end 13. In other words, the luminous intensity from the middle position of the extension cable body 1 toward the first end 11 or toward the second end 13 gradually increases, or the luminous intensity from the middle position toward both the first end 11 and the second end 13 gradually increases. As a result, as the luminous intensity gradually increases, the visibility of the charging extension cable 100 can be enhanced in an environment with poor lighting conditions, so that users can see the connection status at both ends of the charging extension cable 100, thereby reducing the possibility of the charging extension cable 100 being separated from the charging pile and / or the vehicle due to misoperation, and can play a guiding and prompting role.

[0028] It should be noted that the charging extension cable 100 provided in the embodiment of the present application is not limited to the use scenario of the charging connection between the charging pile and the vehicle, but can also be used as a mobile power supply or other charging device to charge mobile phones, tablets, computers, displays, power tools or machinery and equipment to provide a longer charging distance.

[0029] See also Figure 1 It should be noted that the charging extension cable 100 in the embodiment of the present application further includes a male connector 12 and a female connector 14 respectively arranged at the first end 11 and the second end 13. The male connector 12 is connected to the gun head of the original charging cable of the charging pile, and the female connector 14 is connected to the charging port of the vehicle.

[0030] Preferably, the luminous intensity of the light source assembly 2 gradually increases in the direction pointing to the first end 11 of the extension cable body 1 or the second end 13 of the extension cable body 1. In other words, the luminous intensity is low at one end of the extension cable body 1 and high at the other end. For example, the luminous intensity near the male connector 12 may be low, and the luminous intensity near the female connector 14 may be high. Alternatively, the luminous intensity near the male connector 12 may be high, and the luminous intensity near the female connector 14 may be low, so that the position of the male connector 12 or the female connector 14 can be distinguished by one end being dark and the other end being bright.

[0031] See also Figures 4 to 6 In some embodiments, the light source assembly 2 includes a plurality of light source assemblies, each of which includes a light emitting surface 221, and a positive electrode 222 and a negative electrode 223 connected to the light emitting surface 221; the area from the positive electrode 222 to the negative electrode 223 in the light emitting surface 221 is a conductive light emitting area 224. Along the direction pointing to the first end 11 and / or the direction pointing to the second end 13, the area of ​​the conductive light emitting area 224 on the light emitting surface 221 increases one by one, please continue to refer to Figures 4 to 6 , Figures 4 to 6Three light source assemblies 2 are shown, and the areas of the conductive light-emitting areas 224 thereof are gradually increased. Thus, by gradually increasing the areas of the conductive light-emitting areas 224 occupying the light-emitting surface 221, the luminous intensity of the light source assembly 2 is gradually enhanced, and by controlling the area ratio of the conductive light-emitting area 224 of each light source assembly 2, the luminous intensity of each light source assembly 2 is different. The higher the area ratio of the conductive light-emitting area 224 to the light-emitting surface 221, the stronger the luminous intensity of the light source assembly 2, so that the luminescence of the extended body 1 presents a trend of gradual enhancement, which makes it easier for users to determine the positions of the male connector 12 and the female connector 14.

[0032] For further information, see Figures 4 to 6 By controlling the distance between the positive electrode 222 and the negative electrode 223 in each light source assembly 2, the area of ​​the conductive light-emitting area 224 can be controlled. In an optional manner, the position of either the positive electrode 222 or the negative electrode 223 can be fixed, and the position of the other can be adjusted to change the area of ​​the conductive light-emitting area 224. Or the relative positions of the positive electrode 222 and the negative electrode 223 can be changed at the same time to change the area of ​​the conductive light-emitting area 224. The former is preferred, which can simplify the processing of the light source assembly 2. It should be noted that the arrangement of the light-emitting surface 221, the positive electrode 222 and the negative electrode 223 of the light source assembly 2, and the control of the area of ​​the conductive light-emitting area 224 by controlling the distance between the positive electrode 222 and the negative electrode 223 belong to the prior art and will not be repeated here.

[0033] In some embodiments, the area ratio of the conductive light-emitting area 224 to the light-emitting surface 221 is a, satisfying 0.55≤a≤1. Controlling a within the above range can, on the one hand, ensure the normal light-emitting effect of each light source assembly 2, and on the other hand, arranging multiple light source assemblies 2 within the range can achieve a gradual change in light intensity, so that the user can perceive the difference in light intensity. Exemplarily, a can be any point value within the above range, for example, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1, etc.

[0034] Furthermore, the light source assembly 2 is a breathing lamp, and the light-emitting surface can be formed by an LED lamp. The LED lamp enables the light-emitting surface to save electricity and can reduce the setting volume of the light source assembly 2.

[0035] For further information, see Figure 1 Each light source assembly 2 can be arranged at equal or unequal intervals on the extension line body 1. The embodiment of the present application also does not limit the number of light source assemblies 2. For example, the number of light source assemblies 2 can be five, six, or seven.

[0036] See also Figure 1In some embodiments, the charging extension cable 100 further includes a light source component 3, which is disposed around the outer circumference of at least one of the male connector 12 and the female connector 14, and makes the outer circumference of at least one of them emit light. Taking the female connector 14 as an example, the light source component 3 is disposed around the outer circumference of the female connector 14, so that the entire outer circumference of the female connector 14 emits light. Since the radial dimension of the female connector 14 is generally larger than the radial dimension of the extension cable body 1, the light emitting surface 221 of the light source component 3 is larger than the light source component 2 with the highest light intensity on the extension cable body 1. Thus, the light source component 3 can be arranged to further guide the position of the female connector 14, and the male connector 12 is arranged in the same way, which will not be repeated here.

[0037] Furthermore, the bright source component 3 also includes a light-emitting surface and a positive electrode and a negative electrode connected to the light-emitting surface, and the area from the positive electrode to the negative electrode is a conductive light-emitting area. In the bright source component 3, the light-emitting surface and the conductive light-emitting area have the same area. In other words, the entire light-emitting surface of the bright source component 3 is a conductive light-emitting area. The light-emitting principle of the conductive light-emitting area of ​​the bright source component 3 is the same as that of the light source component 2, and will not be repeated here.

[0038] Furthermore, the charging extension cable 100 also includes a lighting effect control chip, which is electrically connected to the positive electrode 222 and the negative electrode 223 of the light source component 2 and is electrically connected to the light source component 3. The lighting effect control chip is used to control the light source component 2 and the light source component 3 to emit light.

[0039] Furthermore, the charging extension cable 100 also includes a light sensor, which is electrically connected to the lighting effect control chip. When the light sensor senses that the ambient light brightness is low, it converts the light signal into an electrical signal and transmits it to the lighting effect control chip. Then, the lighting effect control chip controls the opening of the light source component 2 and the bright source component 3, which can improve the opening flexibility of the light source component 2 without manual control.

[0040] Exemplarily, the light sensor is a photoresistor sensor, a photodiode sensor, a phototransistor sensor, a photoelectric switch sensor, or the like.

[0041] See also Figure 1 In an optional embodiment, the light source assembly 2 can be fixedly disposed on the extension line body 1, or the light source assembly 2 can be detachably connected to the extension line body 1.

[0042] The latter is preferred. In some embodiments, the light source assembly 2 includes a positioning member 21 and a light-emitting member. The positioning member 21 is provided with a slot 213, and the slot 213 is detachably connected to the extension line body 1. The light-emitting member is arranged on the side of the positioning member 21 away from the slot 213. In other words, the extension line body 1 is inserted into the slot 213, and the light source assembly 2 and the extension line body 1 are fixed. When the light source assembly 2 is damaged, it can be easily replaced and maintained, and the setting position of the light source assembly 2 can be adjusted according to the length of the charging extension line 100. Compared with the detachable methods such as fasteners and magnetic suction, the setting of the slot 213 is simpler in structure, has low production cost, and can reduce the difficulty of assembly and maintenance. The design of the slot 213 on the positioning member 21 can improve the positioning effect of the light-emitting member. By making the position of the slot 213 on each light source assembly 2 consistent, the position setting of the light-emitting member can be guaranteed to be consistent.

[0043] Furthermore, the clamping mode of the clamping slot 213 can be a hard clamping or an elastic clamping. The hard clamping means that the clamping member 21 and the extension cable body 1 are in hard contact, and the elastic clamping means that the clamping member 21 and the extension cable body 1 are in soft contact.

[0044] See also Figure 2 Preferably, in some embodiments, the clamping member 21 includes a clamping portion 211 and an elastic body 212 connected to each other, the clamping portion 211 is provided with a clamping groove 213, and the elastic body 212 is used to deform so that the clamping portion 211 is clamped to the extension line body 1. By adding the elastic body 212, the clamping process of the clamping portion 211 is buffered, the clamping portion 211 can be protected, and the wear of the clamping portion 211 caused by collision is prevented, thereby improving the durability of the clamping member 21 and increasing the service life of the clamping member 21.

[0045] In some embodiments, the clamping portion 211 and the elastic body 212 may form a clamp-like mechanism to clamp the extension cable body 1 .

[0046] In some other embodiments, see Figure 2The clamping part 211 includes a first ring body 2111 and a second ring body 2112. The second ring body 2112 is located inside the first ring body 2111. The elastic body 212 is connected between the inner side of the first ring body 2111 and the outer side of the second ring body 2112. The second ring body 2112 is provided with a clamping groove 213, and the first ring body 2111 is provided with a notch connected to the clamping groove 213. Thus, by compressing the elastic body 212, the accommodating volume of the clamping groove 213 in the second ring body 2112 can be enlarged, and the extension line body 1 can be easily clamped. When the elastic body 212 is released, the elastic body 212 can make the second ring body 2112 abut against the extension line body 1, so as to firmly clamp the extension line body 1. Thus, through the cooperation between the first ring body 2111, the second ring body 2112 and the elastic body 212, the installation of the light source assembly 2 is more convenient and quick, and it can adapt to charging extension lines 100 of various radial sizes, thereby improving the application range of the light source assembly 2. Optionally, the elastic body 212 may be a spring or a spring sheet.

[0047] For further information, see Figure 3 In order to make the clamping part 211 be able to clamp the extension line body 1 evenly and not be loosened due to a loose fixation at a certain place, in some embodiments, the second ring body 2112 includes multiple sections that surround the inside of the first ring body 2111 and are arranged at equal distances and lengths, and the elastic body 212 includes multiple sections, and all the elastic bodies 212 are equally distributed between each section of the second ring body 2112 and the first ring body 2111. As a result, the length of each section of the second ring body 2112 is consistent, the multiple sections of the second ring body 2112 are symmetrically arranged, and the number of elastic bodies 212 between each section of the second ring body 2112 and the first ring body 2111 is consistent, so that the elastic force of the elastic body 212 on each section of the second ring body 2112 is similar, and then the uniformity of the clamping force of each section of the second ring body 2112 on the extension line body 1 can be improved, thereby improving the strength of the clamping part 211 clamping the extension line body 1 as a whole.

[0048] For some examples, see Figure 2 The clamping member 21 is also provided with a heat dissipation hole 215, which is connected to the clamping slot 213. The heat dissipation hole 215 can be provided to dissipate heat from the extension cable body 1 and maintain its normal working environment. The heat dissipation hole 215 can be arranged around the outer periphery of the clamping member 21 to increase the heat dissipation area of ​​the heat dissipation hole 215. For example, the heat dissipation hole 215 can be one, two, or three, etc., which is not specifically limited in this embodiment.

[0049] For some examples, see Figure 2The side of the positioning member 21 away from the slot 213 is provided with a receiving slot 214, and the light-emitting member is arranged in the receiving slot 214. The receiving slot 214 can provide a positioning point for the light-emitting member, ensure the installation position of the light-emitting member, and prevent the light-emitting member from deviating or shifting during the installation process. The groove body of the receiving slot 214 can better fix the light-emitting member, reduce the loosening and falling off of the light-emitting member due to vibration or other external forces during use, thereby improving the reliability of the fixation of the light source assembly 2.

[0050] In some embodiments, the first ring body 2111 of the locking member 21 is provided with a receiving groove 214 along its outer circumference, and the light-emitting member is located in the receiving groove 214 of the first ring body 2111. In some embodiments, the light-emitting member includes a light-emitting surface 221 and a positive electrode 222 and a negative electrode 223 connected to the light-emitting surface 221. Since the light-emitting member is disposed in the receiving groove 214 of the first ring body 2111, the light-emitting member can emit light around the first ring body 2111.

[0051] To summarize, a charging extension cable 100 provided in an embodiment of the present application is detachably connected to multiple light source assemblies 2, and the conductive light-emitting area 224 of each light source assembly 2 occupies a different area ratio a of the light-emitting surface 221. In the direction pointing to the male head 12 or the female head 14, the area ratio a increases one by one, so that the luminous intensity of the charging extension cable 100 gradually increases toward the positions of the two ends, which can increase the visibility of the charging extension cable 100. In environments with poor lighting conditions, the user can more intuitively observe the location of the male head 12 or the female head 14, which plays a role of highlighting the prompt, thereby reducing the situation where the user mistakenly operates the charging extension cable 100 and causes it to be separated from the charging pile or the vehicle.

[0052] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0053] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0055] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A charging extension cable (100), characterized in that: include: The extension line body (1) comprises a first end (11) and a second end (13) along its length direction; A light source assembly (2) is connected to the extension line body (1), and the light intensity of the light source assembly (2) gradually increases in a direction pointing toward the first end (11) and / or toward the second end (13).

2. The charging extension cable (100) according to claim 1, characterized in that: The light source assembly (2) comprises a locking piece (21) and a light-emitting piece, the locking piece (21) being provided with a locking slot (213) extending therethrough, the locking slot (213) being detachably locked to the extension line body (1), and the light-emitting piece being provided on a side of the locking piece (21) facing away from the locking slot (213).

3. The charging extension cable (100) according to claim 2, characterized in that: The clamping member (21) comprises a clamping portion (211) and an elastic body (212) connected to each other, the clamping portion (211) being provided with the clamping groove (213) running through it, and the elastic body (212) being used to deform so that the clamping portion (211) is clamped to the extension line body (1).

4. The charging extension cable (100) according to claim 3, characterized in that: The clamping portion (211) comprises a first ring body (2111) and a second ring body (2112); the second ring body (2112) is located inside the first ring body (2111); the elastic body (212) is connected between the inner side of the first ring body (2111) and the outer side of the second ring body (2112); the second ring body (2112) is provided with the clamping groove (213) penetrating therethrough; and the first ring body (2111) is provided with a notch communicating with the clamping groove (213).

5. The charging extension cable (100) according to claim 4, characterized in that: The second ring body (2112) includes a plurality of sections surrounding the interior of the first ring body (2111) and arranged at equal distances and lengths. The elastic body (212) includes a plurality of elastic bodies (212), and all of the elastic bodies (212) are equally distributed between each section of the second ring body (2112) and the first ring body (2111).

6. The charging extension cable (100) according to claim 2, characterized in that: A receiving groove (214) is concavely provided on a side of the locking member (21) facing away from the locking groove (213), and the light-emitting member is arranged in the receiving groove (214).

7. The charging extension cable (100) according to claim 2, characterized in that: The locking member (21) is also provided with a heat dissipation hole (215) extending therethrough, and the heat dissipation hole (215) is in communication with the locking slot (213).

8. The charging extension cable (100) according to any one of claims 1 to 7, characterized in that: The light source assembly (2) comprises a plurality of light source assemblies, each of which comprises a light emitting surface (221), and a positive electrode (222) and a negative electrode (223) connected to the light emitting surface (221); the area from the positive electrode (222) to the negative electrode (223) in the light emitting surface (221) is a conductive light emitting area (224), and along a direction pointing toward the first end (11) and / or toward the second end (13), the proportion of the area of ​​the conductive light emitting area (224) to the light emitting surface (221) increases one by one.

9. The charging extension cable (100) according to claim 8, characterized in that: The area ratio of the conductive light-emitting area (224) to the light-emitting surface (221) is a, satisfying: 0.55≤a≤1.

10. The charging extension cable (100) according to any one of claims 1 to 7, characterized in that: The charging extension cable (100) further comprises a male connector (12) and a female connector (14) respectively connected to the first end (11) and the second end (13), and a light source component (3), wherein the light source component (3) is disposed around the outer peripheral surface of at least one of the male connector (12) and the female connector (14), and causes the outer peripheral surface of at least one of the male connector (12) and the female connector (14) to emit light.

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