A retractable cord device

Abstract

A retractable cord device includes a housing, a first circuit board enclosed with the housing to form a cavity, a retractable cord reel assembly rotatably mounted in the cavity, the retractable cord reel assembly including a cord retaining disc and a data cord wound around the cord retaining disc, an end of the data cord extending out of the housing, a second circuit board mounted on the cord retaining disc between the data cord and the first circuit board, a conductive slip ring on the second circuit board electrically connected to a conductive terminal on the first circuit board, and a locking assembly mounted on the housing on a side of the data cord away from the second circuit board, the locking assembly cooperating with the cord retaining disc to lock the data cord to prevent the data cord from retracting into the housing.

Description

Technical Field

[0001] This utility model relates to the field of telescopic lines, and specifically to a telescopic line device. Background Technology

[0002] Traditional cables, with their fixed length, often present numerous challenges in practical use. For instance, when charging electronic devices or transmitting data, excessively long cables are prone to tangling and knotting, affecting user experience and potentially causing cable damage and shortening their lifespan. Conversely, excessively short cables limit the usability of equipment, requiring users to be close to the power source or data interface, which is extremely inconvenient. In industrial automated production lines, frequent movement and repositioning of electrical equipment are commonplace. Fixed-length cables struggle to adapt to these dynamic changes. During equipment movement, cables may be excessively stretched or twisted, leading to internal wire breakage, poor contact, and other problems, affecting the normal operation of the production line and increasing maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a telescopic cable device with a reliable locking component that can work with the cable locking disc to lock the data cable and prevent it from retracting automatically. It is also easy to operate; simply pull the data cable again to release the lock, and the cable will continue to retract after being released.

[0004] The objective of this utility model is achieved through the following solution: This utility model discloses a telescopic cable device, comprising: case; A first circuit board, which closes with the housing to form a cavity; A telescopic cable reel assembly is rotatably installed in the cavity. The telescopic cable reel assembly includes a cable clamping disc and a data cable wound on the cable clamping disc. One end of the data cable extends out of the housing. The second circuit board is mounted on the cable clamping disc and located between the data line and the first circuit board. The conductive slip ring on the second circuit board is electrically connected to the conductive terminal on the first circuit board. A locking component is mounted on the housing and located on the side of the data cable away from the second circuit board. The locking component cooperates with the cable clamping disc to lock the data cable to prevent the data cable from retracting into the housing. The telescopic reel assembly includes a locking boss that mates with the wire-holding disc. The outer edge of the locking boss has a locking protrusion. The locking protrusion engages with a slot on the wire-holding disc to fix the locking boss onto the wire-holding disc. The telescopic reel assembly also includes a spring. The spring is disposed on the locking boss and is used to provide power for the wire-holding disc to reel in the wire. The locking assembly includes a swing member and a rotating gear. The swing member is provided with a limiting block and a pushing block. The rotating gear is located between the limiting block and the pushing block. When the swing member swings to its maximum amplitude, the rotating gear can abut against the limiting block or the pushing block. The locking assembly also includes a reset spring, which is used to provide driving force for the swing member to lock the locking boss. The ornament is also provided with a protrusion that engages with the notch of the locking boss. When the wire-locking disc retracts the wire, the wire-retracting action stops when the protrusion is locked in the notch.

[0005] Furthermore, the housing is provided with a first positioning shaft and a second positioning shaft at intervals, the swing element is rotatably mounted on the first positioning shaft, and the rotating gear is rotatably mounted on the second positioning shaft.

[0006] Furthermore, the housing is provided with an opening for the data cable to enter and exit, and the data cable extends from the opening.

[0007] Furthermore, the data cable has a free end, and a stop portion is provided near the free end of the data cable. The size of the stop portion is larger than the size of the opening to prevent the free end of the data cable from entering the housing.

[0008] Furthermore, the housing is provided with a third positioning shaft, and the wire clamping disc is sleeved on the third positioning shaft and can rotate around the third positioning shaft.

[0009] The advantages of this invention are that the housing and the first circuit board form a cavity to house all components, occupying little space and facilitating integration. The conductive design is ingenious; the conductive slip ring of the second circuit board is electrically connected to the conductive terminals of the first circuit board, ensuring stable data transmission during extension and retraction. The locking component is reliable, working in conjunction with the cable-locking disc to lock the data cable and prevent automatic retraction. Operation is simple: pulling the data cable again releases the lock, and the cable continues to retract after being released. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a three-dimensional structural diagram of the telescopic wire device of this utility model.

[0012] Figure 2 for Figure 1 An exploded perspective view of the telescopic cable device of this utility model.

[0013] Figure 3 This is a schematic diagram of the assembly of the cable clamping boss, the ornament, and the rotating gear of the telescopic cable device of this utility model.

[0014] Figure 4 This is a schematic diagram of the assembly of part of the housing and the reset spring of the telescopic wire device of this utility model. Detailed Implementation

[0015] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0016] The terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in during use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation or position.

[0017] Please see Figures 1-4 This utility model discloses a telescopic line device, comprising: Casing 10; A first circuit board 20 is closed with the housing 10 to form a cavity; A telescopic cable reel assembly is rotatably mounted within the cavity. The telescopic cable reel assembly includes a cable clamping disc 31 and a data cable 32 wound around the cable clamping disc 31, with one end of the data cable 32 extending out of the housing 10. The housing 10 is provided with a third positioning shaft 13, and the cable clamping disc 31 is fitted onto the third positioning shaft 13 and can rotate around the third positioning shaft 13.

[0018] The second circuit board 40 is mounted on the cable clamping disc 31 and located between the data line 32 and the first circuit board 20. The conductive slip ring on the second circuit board 40 is electrically connected to the conductive terminal on the first circuit board 20. A locking component 50 is mounted on the housing 10 and located on the side of the data cable 32 away from the second circuit board 40. The locking component 50 cooperates with the cable clamping disc 31 to lock the data cable 32 to prevent the data cable 32 from retracting into the housing 10.

[0019] The telescopic cable reel assembly includes a locking boss 33 that mates with the cable clamping disc 31. The outer edge of the locking boss 33 has a locking protrusion 331, which engages with a slot on the cable clamping disc 31 to fix the locking boss 33 onto the disc. During assembly, the locking protrusion 331 of the locking boss 33 is aligned with the slot on the cable clamping disc 31, allowing the locking protrusion 331 to embed into the slot, thereby fixing the locking boss 33 onto the cable clamping disc 31. This not only ensures the stability of the connection between the locking boss 33 and the cable clamping disc 31 but also allows the telescopic cable reel assembly to maintain good concentricity and stability during rotation. This ensures that the data cable 32 wound on the cable clamping disc 31 can extend and retract evenly and orderly, avoiding problems such as cable jamming and tangling, thus improving the performance and reliability of the entire telescopic cable device.

[0020] The telescopic cable reel assembly also includes a spring 34, which is mounted on the locking protrusion 33. The spring 34 provides the winding power for the cable-holding disc 31. When the user pulls the data cable 32 out of the telescopic cable reel assembly, the cable-holding disc 31 rotates accordingly. During the rotation of the cable-holding disc 31, the spring 34 is gradually tightened, storing elastic potential energy. When the user pulls the data cable 32 again to release the locking state of the locking component 50, the elastic potential energy stored in the spring 34 is released. The spring 34 drives the cable-holding disc 31 to rotate in the opposite direction, thereby causing the data cable 32 wound on the cable-holding disc 31 to automatically retract back into the telescopic cable reel assembly. The winding power provided by the spring 34 allows the data cable 32 to automatically retract without the need for continuous external force, keeping the inside of the device neat and orderly, and providing a convenient user experience without the need for manual winding and retraction of the data cable 32. This design cleverly utilizes the elasticity of the spring 34 to automate and improve the efficiency of the data cable 32's retractable function.

[0021] Please see Figure 3The locking assembly 50 includes a swing member 51 and a rotating gear 52. The swing member 51 is provided with a limiting block 511 and a pushing block 512. The rotating gear 52 is located between the limiting block 511 and the pushing block 512. When the swing member 51 swings to its maximum amplitude, the rotating gear 52 can abut against the limiting block 511 or the pushing block 512. The housing 10 is provided with a first positioning shaft 11 and a second positioning shaft 12 at intervals. The swing member 51 is rotatably mounted on the first positioning shaft 11, and the rotating gear 52 is rotatably mounted on the second positioning shaft 12. When the housing 10 is locked, the limiting block 511 provides a resisting surface for the rotating gear 52, preventing it from rotating, thereby limiting the rotation of the cable clamping disc 31 and preventing the data cable 32 from retracting. When the housing 10 is unlocked, the pushing block 512 interacts with the rotating gear 52, pushing it to change its position or state, thereby unlocking the housing. The rotating gear 52, in cooperation with the ornament 51, converts the movement of the ornament 51 into a restriction or release of the rotation of the cable-locking disc 31, thereby controlling the extension and retraction of the data cable 32. When the user pulls the data cable 32 to the desired length and releases it, the rotating gear 52 will abut against the limiting block 511 on the ornament 51. Due to the obstruction of the limiting block 511, the rotating gear 52 cannot continue to rotate, and the cable-locking disc 31 cannot rotate either, thus preventing the data cable 32 from retracting into the housing 10 and locking the data cable 32. When the user needs to retract the data cable 32, pulling the data cable 32 again, as the ornament 51 swings, the rotating gear 52 gradually disengages from the abutment of the limiting block 511 and comes into contact with the pushing block 512. The pushing block 512 applies a thrust to the rotating gear 52, causing the rotating gear 52 to rotate or change position, thereby releasing the lock on the cable-locking disc 31. At this time, under the action of the spring 34, the cable clamping disc 31 begins to rotate, causing the data cable 32 to retract back into the housing 10.

[0022] The ornament 51 is also provided with a protrusion 513 that engages with the notch of the locking boss 33. When the cable-locking disc 31 retracts the cable, the retraction action stops when the protrusion 513 is engaged within the notch. As the cable-locking disc 31 rotates, the locking boss 33 also rotates. When the cable-locking disc 31 retracts the cable to a certain extent, the protrusion 513 on the ornament 51 gradually approaches the notch on the locking boss 33. When the protrusion 513 is precisely engaged within the notch, the rotation of the locking boss 33 is hindered, thereby causing the cable-locking disc 31 to stop rotating, and the retraction action also stops. When the user needs to pull out the data cable 32 again, pulling the data cable 32 causes the ornament 51 to swing against the driving force of the reset spring 53. During the swinging process of the ornament 51, the protrusion 513 disengages from the locking notch, and simultaneously the rotating gear 52 contacts the pushing block 512. The pushing block 512 applies a pushing force to the rotating gear 52, causing the rotating gear 52 to rotate or change position, thus releasing the lock on the cable-locking disc 31, allowing the data cable 32 to be pulled out again. After the data cable 32 is released, the reset spring 53 pushes the ornament 51 back to its original position, preparing for the next locking and cable retraction stop control. The cooperation between the protrusion 513 and the locking notch can precisely control the stop position of the cable retraction action, preventing the data cable 32 from excessively retracting or not retracting completely, ensuring that the data cable 32 is neat and orderly within the device.

[0023] Please see Figure 4 The locking component 50 also includes a reset spring 53, which is disposed on the housing 10. The reset spring 53 is used to provide driving force for the swing piece 51 to lock the locking boss 33, so that the swing piece 51 can swing quickly and accurately to the locking position when there is no external interference, so that the rotating gear 52 abuts against the limiting block 511, thereby locking the data line 32.

[0024] The housing 10 has an opening for the data cable 32 to enter and exit, through which the data cable 32 extends. When the user needs to use the data cable 32, they simply pull the end of the data cable 32 extending from the opening in the housing 10. At this time, the telescopic cable reel assembly begins to rotate under the pulling force, releasing the data cable 32 wound on it, and the data cable 32 gradually extends out of the opening.

[0025] The data cable 32 has a free end, and a stop 321 is provided near the free end of the data cable 32. The size of the stop 321 is larger than the size of the opening to prevent the free end of the data cable 32 from entering the housing 10. Because the size of the stop 321 is larger than the size of the opening, during normal pulling, the stop 321 will be blocked by the opening and cannot enter the housing 10, thus ensuring that the free end of the data cable 32 can extend smoothly for the user to connect to the device.

[0026] The telescopic cable device provided by this utility model has a cavity formed between the housing 10 and the first circuit board 20 to accommodate all components, occupying little space and facilitating integration. The conductive design is ingenious; the conductive slip ring of the second circuit board 40 is electrically connected to the conductive terminals of the first circuit board 20, ensuring stable data transmission during extension and retraction. The locking component 50 is reliable, working in conjunction with the cable-locking disc 31 to lock the data cable 32, preventing it from retracting automatically. Operation is simple: pulling the data cable 32 again releases the lock, and the cable continues to retract after release.

[0027] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A telescopic cable device, characterized in that, include: case; A first circuit board, which closes with the housing to form a cavity; A telescopic cable reel assembly is rotatably installed in the cavity. The telescopic cable reel assembly includes a cable clamping disc and a data cable wound on the cable clamping disc. One end of the data cable extends out of the housing. The second circuit board is mounted on the cable clamping disc and located between the data line and the first circuit board. The conductive slip ring on the second circuit board is electrically connected to the conductive terminal on the first circuit board. A locking component is mounted on the housing and located on the side of the data cable away from the second circuit board. The locking component cooperates with the cable clamping disc to lock the data cable to prevent the data cable from retracting into the housing. The telescopic reel assembly includes a locking boss that mates with the wire-holding disc. The outer edge of the locking boss has a locking protrusion. The locking protrusion engages with a slot on the wire-holding disc to fix the locking boss onto the wire-holding disc. The telescopic reel assembly also includes a spring that is disposed on the locking boss and provides power for the wire-holding disc to reel in the wire. The locking assembly includes a swing member and a rotating gear. The swing member is provided with a limiting block and a pushing block. The rotating gear is located between the limiting block and the pushing block. When the swing member swings to its maximum amplitude, the rotating gear can abut against the limiting block or the pushing block. The locking assembly also includes a reset spring, which is used to provide driving force for the swing member to lock the locking boss. The ornament is also provided with a protrusion that engages with the notch of the locking boss. When the wire-locking disc retracts the wire, the wire-retracting action stops when the protrusion is locked in the notch.

2. The telescopic line device according to claim 1, characterized in that, The housing is provided with a first positioning shaft and a second positioning shaft at intervals. The swing member can swing around the first positioning shaft, and the rotating gear is rotatably mounted on the second positioning shaft.

3. The telescopic line device according to claim 1, characterized in that, The housing has an opening for the data cable to enter and exit, and the data cable extends from the opening.

4. The telescopic line device according to claim 3, characterized in that, The data cable has a free end, and a stop is provided near the free end of the data cable. The size of the stop is larger than the size of the opening to prevent the free end of the data cable from entering the housing.

5. The telescopic line device according to claim 1, characterized in that, The housing is provided with a third positioning shaft, and the wire clamping disc is sleeved on the third positioning shaft and can rotate around the third positioning shaft.

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