Independently stretchable elastic thread

Abstract

The utility model discloses a kind of independently stretchable telescopic wire, the middle part of shell is equipped with a adapter plate, the upper and lower sides of adapter plate are equipped with a wheel core that can independently rotate, for winding wire rod, the front and back of adapter plate are equipped with conductive slip ring, wheel core side towards adapter plate is equipped with contact connector and the guide groove of arc circle shape, contact connector is located the inside of guide groove, wire rod is electrically connected with adapter plate by the cooperation of contact connector and conductive slip ring, the outside of shell at adapter plate is equipped with sliding slot, sliding block is equipped in sliding slot, sliding block and sliding slot are movably matched, sliding block is equipped with the guide projection of extending into guide groove, by the independent design of double wheel core, independent double pull is realized.Simultaneously, by the cooperation between sliding block, guide projection and guide groove, the distance between guide projection and wheel core middle axis can be smoothly changed.

Description

Technical Field

[0001] This utility model relates to the field of electronic device accessories, and in particular to a retractable cable that can be stretched independently. Background Technology

[0002] Data cables are an essential part of electronic product use. With the rapid development of the electronics industry, data cables have become indispensable products in our lives. However, due to their long length, data cables are difficult to reel in, and tangled cables easily become knotted, making them inconvenient to carry, unsightly, and prone to damage after repeated use. With continuous optimization and improvement in data cable design, retractable data cables have gradually become popular in the market, thanks to their small size and portability.

[0003] Currently, all retractable data cables and charging cables on the market involve a retractable structure. The technical solutions used all utilize a spring to achieve this. The earliest type on the market was the dual-pull data cable, which generally uses a steel ball / swing arm and guide groove structure to limit the cable's extension stroke. This results in a short lifespan, poor operational stability and reliability, and fails to meet user needs. For example, patent CN213602112U discloses a bidirectional retractable data cable that can be stretched in both directions simultaneously. However, its guide and limiting structure using steel balls and guide grooves limits the extension stroke, causing noise during the stretching process, and its individual connectors cannot be stretched independently.

[0004] The patent with publication number CN222749836U discloses a single-pull telescopic cable. It uses a swing arm and guide groove guide limiting structure to limit the stretching stroke of the data cable. Although there is no noise during the stretching process, the swing arm is prone to tilting up when it is connected to the limiting groove, which causes the stretching process to be stuck and can only be pulled one at a time.

[0005] Therefore, how to provide a data cable that can be stretched in both directions, and can be stretched independently, while maintaining a stable and noiseless stretching process, has become a pressing technical challenge. Utility Model Content

[0006] The purpose of this invention is to solve one of the above-mentioned defects and provide a retractable cord that can be stretched independently.

[0007] The objective of this utility model is achieved through the following means: An independently stretchable telescopic cable includes a housing and a cable. A transition plate is located in the center of the housing. Each of the upper and lower sides of the transition plate has an independently rotatable wheel core for winding the cable. Conductive slip rings are located on both sides of the transition plate. A contact connector and an arc-shaped guide groove are located on the side of the wheel core facing the transition plate. The contact connector is located inside the guide groove. The cable is electrically connected to the transition plate through the cooperation of the contact connector and the conductive slip rings. A sliding groove is located on the outer side of the housing on the transition plate. A slider is located within the sliding groove and movably engages with the sliding groove. A guide protrusion extends into the guide groove on the slider. When the guide protrusion moves relative to the guide groove and the distance between the guide protrusion and the central axis of the wheel core changes, the slider moves along the length of the sliding groove.

[0008] As a preferred embodiment, the guide protrusion is disposed in the middle of the slider.

[0009] As a preferred embodiment, the guide protrusion is located on the extension line of one of the diameters of the wheel core.

[0010] As a preferred embodiment, the guide protrusion is cylindrical.

[0011] As a preferred embodiment, the housing includes a first part, a second part, and a third part. The first part and the second part are respectively fastened to the upper and lower sides of the third part, and a take-up cavity is formed between them. The two wheel cores are respectively located in the two take-up cavities. The third part is provided with an adapter plate mounting position for mounting the adapter plate and exposing both the upper and lower surfaces of the adapter plate. A sliding groove is provided on the third part and located outside the adapter plate mounting position.

[0012] As a preferred embodiment, the outer side of the adapter plate mounting position is provided with a horizontal limiting groove, and the outer side of the conductive slip ring is provided with a horizontal limiting part, which is engaged in the horizontal limiting groove.

[0013] As a preferred embodiment, the horizontal limiting part includes a first horizontal limiting part and a second horizontal limiting part, and the horizontal limiting groove includes a first horizontal limiting groove and a second horizontal limiting groove, with the first horizontal limiting part and the second horizontal limiting part being arranged in a large and small manner.

[0014] As a preferred embodiment, the adapter plate extends outward in the horizontal direction to form an input end, and the third part is provided with an input end positioning groove, which extends from the side wall of the third part to the adapter plate mounting position.

[0015] As a preferred embodiment, the wheel core is provided with a mainspring on the side opposite to the adapter plate. The mainspring is located in the middle of the wheel core, and the wheel core automatically retracts the wire extending from the housing through the mainspring.

[0016] The beneficial effects of this utility model are: through the independent design of the double wheel core, independent double pulling can be achieved. At the same time, by utilizing the cooperation between the slider, the guide protrusion and the guide groove, the distance between the guide protrusion and the central axis of the wheel core can be smoothly changed. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment. Figure 2 This is an exploded view of the structure of an embodiment. Figure 3 This is a schematic diagram of the slider located in the groove in Embodiment 1. Figure 4 This is a schematic diagram of the adapter plate structure in Embodiment 2. Figure 5 This is a schematic diagram of the guide groove and contact connector located on the wheel core in Embodiment 4. Explanation of reference numerals in the attached diagram: 1-Housing 1; 101-First part; 102-Second part; 103-Third part; 1031-Slide groove; 1032-Adapter plate mounting position; 1033-First horizontal limiting groove; 1034-Second horizontal limiting groove; 1035-Input end positioning groove; 2-Wire; 3-Adapter plate; 301-Conductive slip ring; 302-First horizontal limiting part; 303-Second horizontal limiting part; 304-Input end; 4-Wheel core; 401-Guide groove; 5-Contact connector; 6-Slider; 601-Guide protrusion; 7-Spring. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] To facilitate understanding, the present invention will now be described in further detail with reference to specific implementation examples, but this is not intended to limit the present invention.

[0020] like Figure 1-5 As shown, this utility model discloses an independently stretchable telescopic cable, including a housing 1 and a cable 2. A connecting plate 3 is provided in the middle of the housing 1. A wheel core 4 that can rotate independently is provided on both the upper and lower sides of the connecting plate 3 for winding the cable 2. Conductive slip rings 301 are provided on both the front and back sides of the connecting plate 3. A contact connector 5 and an arc-shaped guide groove 401 are provided on the side of the wheel core 4 facing the connecting plate 3. The contact connector 5 is located inside the guide groove 401. The cable 2 is electrically connected to the connecting plate 3 through the cooperation of the contact connector 5 and the conductive slip ring 301. Independent double pulling is achieved through the independent design of the double wheel cores 4.

[0021] The housing 1 has a groove 1031 on the outer side of the adapter plate 3. A slider 6 is provided in the groove 1031, and the slider 6 is movably engaged with the groove 1031. The slider 6 has a guide protrusion 601 that extends into the guide groove 401. A spring 7 is provided on the side of the wheel core 4 away from the adapter plate 3. The spring 7 is located in the middle of the wheel core 4. The wheel core 4 automatically winds up the wire 2 extending from the housing 1 through the spring 7. When the guide protrusion 601 moves relative to the guide groove 401 and the distance between the guide protrusion 601 and the central axis of the wheel core 4 changes, the slider 6 moves along the length direction of the groove 1031. By utilizing the cooperation between the slider 6, the guide protrusion 601 and the guide groove 401, the distance between the guide protrusion 601 and the central axis of the wheel core 4 can be smoothly changed.

[0022] The travel limit of the guide groove 401 and the cooperation between the wheel core 4 and the mainspring 7 to achieve charging and winding are mature existing technologies, so the specific structure of the guide groove 401 and the wheel core 4 will not be described in detail.

[0023] In this embodiment, the guide protrusion 601 is disposed in the middle of the slider 6 so that the slider 6 is pushed evenly. The guide protrusion 601 is cylindrical, so that the slider 6 can be pushed evenly, thereby reducing the friction between the slider 6 and the inner wall of the groove 1031 and preventing the data cable from getting stuck during the stretching process.

[0024] The guide protrusion 601 is located on the extension line of one diameter of the wheel core 4, which can be set to increase the stretching stroke of the data cable.

[0025] Specifically, the housing 1 includes a first part 101, a second part 102, and a third part 103. The first part 101 and the second part 102 are respectively fastened to the upper and lower sides of the third part 103, and respectively form a take-up cavity between them. The two wheel cores 4 are respectively located in the two take-up cavities. The third part 103 is provided with an adapter plate mounting position 1032 for mounting the adapter plate 3 and exposing the upper and lower surfaces of the adapter plate 3. The sliding groove 1031 is provided on the third part 103 and is located outside the adapter plate mounting position 1032.

[0026] To prevent the adapter plate 3 from deflecting, a horizontal limiting groove is provided on the outer side of the adapter plate mounting position 1032, and a horizontal limiting part is provided on the outer side of the conductive slip ring 301, which is engaged in the horizontal limiting groove. Specifically, the horizontal limiting part includes a first horizontal limiting part 302 and a second horizontal limiting part 303, and the horizontal limiting groove includes a first horizontal limiting groove 1033 and a second horizontal limiting groove 1034. The first horizontal limiting part 302 and the second horizontal limiting part 303 are arranged in an asymmetrical manner, which plays a role in preventing mistake-proofing during assembly.

[0027] The adapter board 3 extends outward in the horizontal direction to form an input end 304. The third part 103 is provided with an input end positioning groove 1035, which extends from the side wall of the third part 103 to the adapter board mounting position 1032. The input end 304 is used to connect other electronic devices.

[0028] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A retractable telescopic cord, comprising a housing and a cord, characterized in that, A transition plate is provided in the middle of the housing. There is an independently rotating wheel core on both the upper and lower sides of the transition plate for winding the wire. There are conductive slip rings on both sides of the transition plate. There is a contact connector and an arc-shaped guide groove on the side of the wheel core facing the transition plate. The contact connector is located inside the guide groove. The wire is electrically connected to the transition plate through the cooperation of the contact connector and the conductive slip ring. There is a slide groove on the outside of the housing on the transition plate. There is a slider in the slide groove. The slider is movably engaged with the slide groove. There is a guide protrusion on the slider that extends into the guide groove. When the guide protrusion moves relative to the guide groove and the distance between the guide protrusion and the central axis of the wheel core changes, the slider moves along the length of the slide groove.

2. The independently stretchable telescopic cord according to claim 1, characterized in that, The guide protrusion is located in the middle of the slider.

3. The independently stretchable telescopic cord according to claim 1, characterized in that, The guide protrusion is on the extension line of one of the diameters of the wheel core.

4. The independently stretchable telescopic cord according to claim 1 or 2, characterized in that, The guide protrusion is cylindrical.

5. The independently stretchable telescopic cord according to claim 1, characterized in that, The housing includes a first part, a second part, and a third part. The first part and the second part are respectively fastened to the upper and lower sides of the third part, and a take-up cavity is formed between them. The two wheel cores are located in the two take-up cavities. The third part is provided with an adapter plate mounting position for mounting the adapter plate and exposing both the upper and lower surfaces of the adapter plate. A sliding groove is provided on the third part and located outside the adapter plate mounting position.

6. The independently stretchable telescopic cord according to claim 5, characterized in that, The outer side of the adapter plate mounting position is provided with a horizontal limiting groove, and the outer side of the conductive slip ring is provided with a horizontal limiting part, which is locked in the horizontal limiting groove.

7. The independently stretchable telescopic cord according to claim 6, characterized in that, The horizontal limiting part includes a first horizontal limiting part and a second horizontal limiting part, and the horizontal limiting groove includes a first horizontal limiting groove and a second horizontal limiting groove. The first horizontal limiting part and the second horizontal limiting part are arranged in a large and a small manner.

8. The independently stretchable telescopic cord according to claim 5, characterized in that, The adapter plate extends outward in the horizontal direction to form an input end. The third part is provided with an input end positioning groove, which extends from the side wall of the third part to the adapter plate mounting position.

9. The independently stretchable telescopic cord according to claim 1, characterized in that, The wheel core is provided with a spring on the side opposite to the adapter plate. The spring is located in the middle of the wheel core, and the wheel core automatically retracts the wire extending from the housing through the spring.

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