A retraction assembly

Abstract

The embodiment of the present application provides a winding and unwinding assembly for a data line device, which comprises a rotating member and a limiting mechanism, the rotating member is provided with at least one clamping groove on the peripheral side; the limiting mechanism comprises a first limiting member and a second limiting member, the second limiting member is at least partially arranged inside the first limiting member, a circumferential matching relationship is formed between the first limiting member and the second limiting member, the first limiting member has a limiting end capable of selectively engaging or separating with the clamping groove; wherein the first limiting member and the second limiting member are configured to: during the rotation of the rotating member, the circumferential matching relationship generates a force interaction to drive the clamping groove to reciprocally switch between a disengagement position and an engagement position, thereby forming an out-line state, a locking state and a winding state respectively; the present application realizes the sequential switching of the data line out-line, locking and winding states, reduces the winding and unwinding clamping lag, and is simple and convenient to use.

Description

Technical Field

[0001] This invention belongs to the technical field of data cable storage boxes, specifically relating to a cable storage component. Background Technology

[0002] Data cables are mainly used for power transmission or signal connection between electronic devices. In daily use, for easy carrying and storage, some data cable devices are equipped with a retractable structure, which allows the cable to be pulled out according to the usage distance and retracted into the device after use, thereby reducing the situation of the cable being scattered and tangled.

[0003] When existing data cable devices are being extended and retracted, the cable usually relies on a winding structure to extend and retract. When the cable is unevenly arranged or subjected to local compression during the winding process, it is easy to get stuck, making it impossible to pull out or retract the data cable smoothly. Repeatedly pulling it may also cause the bending points of the cable to be subjected to greater tension and have a continuous impact on the internal wire connection positions.

[0004] Chinese utility model patent CN218040091U discloses a retractable data cable, which includes a hollow shell, a cable, a cable reel assembly, and a movable component. The movable component includes a transmission component that cooperates with the shell and the cable reel, as well as an auxiliary component fixedly connected to the shell. The rotation of the cable reel drives the transmission component to move, which in turn causes the auxiliary component to undergo elastic deformation, providing preload force to the transmission component. This solution achieves cable extension, positioning, and retraction through the cooperation of a moving gear, a limiting gear, and a swinging reset component. However, the transmission component and auxiliary component of this solution are all externally arranged, and the components are arranged side by side inside the shell, occupying a large space. During the cable extension process, the limiting structure is prone to frequent intervention, causing jamming.

[0005] Chinese utility model patent CN222896913U discloses a data cable device, whose limiting component includes a first limiting member, a second limiting member, and a third limiting member. The second limiting member pushes the third limiting member to rotate through a mating structure, and an elastic component is disposed between the second limiting member and the housing. This solution uses the elastic component and the mating structure together to keep the data cable device in a positioned state. However, this solution requires three independent limiting members to cooperate, resulting in a relatively complex structure. Furthermore, the third limiting member needs to be independently disposed within the housing, increasing the number of parts and assembly complexity.

[0006] When there is prolonged lag during the retraction and extension process, the data cable is prone to outer sheath wear or internal conductor damage, which can lead to abnormal signal transmission or malfunction. Therefore, existing data cable devices suffer from technical problems such as an unsmooth retraction and extension process, making the data cable susceptible to failure and damage due to jamming and repeated pulling. Summary of the Invention

[0007] The purpose of this invention is to provide a retractable assembly to solve the problems described in the background section.

[0008] To achieve the above objectives, embodiments of the present invention provide a take-up and take-down assembly for a data cable device. The take-up and take-down assembly includes a rotating component and a limiting mechanism. The rotating component has at least one slot on its circumference. The limiting mechanism includes a first limiting component and a second limiting component. The second limiting component is at least partially disposed inside the first limiting component. The first limiting component and the second limiting component form a circumferential engagement relationship. The first limiting component has a limiting end capable of selectively engaging or disengaging from the slot. The first limiting component and the second limiting component are configured such that, during the rotation of the rotating component, the circumferential engagement relationship generates an interaction of forces to drive the slot to reciprocate between a disengaged position and an engaged position, thereby forming a cable delivery state, a locked state, and a cable take-up state, respectively.

[0009] Specifically, the first limiting member has a hollow inner limiting cavity, which is open to one side of the second limiting member, through which the second limiting member extends into the inner limiting cavity. The inner wall of the inner limiting cavity is provided with a first protrusion, a second protrusion, and a third protrusion spaced circumferentially. These protrusions extend inwards towards the interior of the inner limiting cavity and are arranged sequentially along the circumference of the cavity. This design fully utilizes the internal space of the first limiting member, further reducing the space occupied by the limiting mechanism. The sequential arrangement of the three protrusions provides a structural basis for the sequential switching of three working states, allowing the limiting mechanism to engage with different protrusions in different states, achieving clear state differentiation and stable state maintenance.

[0010] Specifically, the second limiting member is located within the space defined by the first boss, the second boss, and the third boss. The second limiting member is surrounded and limited by the three bosses, eliminating the need for a separate installation space for the second limiting member inside the housing, thus achieving extreme compression of the axial space; the three bosses also form a radial constraint on the second limiting member, making it less prone to eccentric wobbling during rotation and ensuring the fitting accuracy between the bosses and the groove.

[0011] Specifically, the first boss, the second boss, and the third boss have the same or similar axial height. The consistent height of the three bosses ensures that the second limiting member experiences uniform force when in contact with each boss during rotation, preventing localized stress concentration or uneven wear caused by inconsistent boss heights. The similar heights of the bosses also facilitate one-time machining, reducing manufacturing difficulty and cost, and ensuring dimensional consistency.

[0012] Specifically, the second limiting member has an abutment groove and a mating groove on its circumference. The abutment groove is positioned opposite each other in a first radial direction on the circumference of the second limiting member, and the mating groove is positioned opposite each other in a second radial direction on the circumference of the second limiting member. The first and second radial directions are perpendicular to each other. The two pairs of grooves are arranged perpendicularly to each other in the radial direction, allowing the second limiting member to form multiple engagement modes with the three bosses after extending into the inner limiting cavity. The alternating engagement of the abutment groove and the mating groove enables the limiting mechanism to switch sequentially between three states. The axially extending groove structure ensures stable contact during relative rotation, improving the reliability of state switching and the smoothness of operation.

[0013] Specifically, the abutting groove and the mating groove extend axially along the second limiting member, so that after the second limiting member extends into the inner limiting cavity, the abutting groove and the mating groove can respectively form a mating relationship with the first boss, the second boss, or the third boss. The axially extending groove structure increases the mating contact length between the boss and the groove, making it less likely for them to misalign or separate during relative rotation; the guiding effect of the axially extending groove makes the movement trajectory of the boss smoother when entering and exiting the groove, reducing the risk of jamming, improving the mating stability and long-term reliability.

[0014] Specifically, the depth of the docking groove is greater than the depth of the abutment groove.

[0015] Specifically, when the first limiting member and the second limiting member rotate relative to each other, the engagement relationship between the abutment groove and the mating groove and the first boss, the second boss, or the third boss includes at least one of the following: When the abutting groove abuts against the third protrusion, the limiting end separates from the slot, and the rotating component can rotate along the cable pulling direction to form the cable exit state; or The mating groove and the second boss form a limiting engagement, and the limiting end remains engaged with the slot to restrict the rotating component from rotating in the cable retraction direction, thus forming the locked state; or When the docking groove abuts against the first boss, the limiting end disengages from the slot, and the rotating component can rotate in the cable retraction direction to form the cable retraction state.

[0016] The three states form a complete operation loop. All operations can be completed simply by pulling, stopping, and pulling again. It is simple and convenient to use.

[0017] Specifically, the limiting mechanism further includes a spring sheet, which is disposed on the outer end face of the first limiting member; The spring plate applies an elastic holding force to the first limiting member through its own elastic restoring force, thereby maintaining the limiting engagement state of the first limiting member during rotation and position switching. The elastic holding force ensures that the first limiting member remains stably in the corresponding position after switching between the three states, reducing the possibility of unexpected swinging of the limiting end due to vibration; the elastic holding does not rely on mechanical locking, and can still provide a certain degree of limiting holding force when the mechanical locking fails due to wear and tear over long-term use, thus improving long-term reliability.

[0018] Specifically, one end of the first limiting member is provided with a first insertion part, which is used to connect with the positioning insertion hole of the outer shell, so that the first limiting member can rotate around the axis of the positioning insertion hole; one end of the first insertion part protrudes axially from one end face of the first limiting member, and the other end of the first insertion part protrudes axially from the other end face of the first limiting member. The first limiting member can be independently disassembled and assembled without disassembling other components, which is convenient for production assembly and subsequent maintenance; both ends of the first insertion part protrude from the end face of the first limiting member, so that after assembly, both ends of the first limiting member are supported by the positioning insertion hole on the inner wall of the outer shell and the pressure plate, respectively, forming a rotating structure supported at both ends; compared with a single-end cantilever support, the support at both ends makes the force on the first limiting member more balanced during rotation, the rotation axis more stable, and reduces the axis misalignment and uneven wear caused by long-term use.

[0019] Specifically, one end of the second limiting member is provided with a second insertion part, which is used to connect with the positioning insertion hole of the outer shell, so that the second limiting member can rotate around the axis of the positioning insertion hole. The second limiting member can also be independently disassembled and assembled, and cooperates with the insertion structure of the first limiting member, so that the limiting mechanism as a whole can be modularly installed and disassembled; the second limiting member rotates between two oppositely arranged positioning insertion holes, with balanced force and stable rotation; further improving production assembly efficiency and convenience of later maintenance.

[0020] Specifically, the limiting mechanism further includes a pressure plate, which has a positioning hole corresponding to the first insertion part and the second insertion part, so as to axially limit the first limiting member and the second limiting member between the pressure plate and the inner wall of the outer housing; the pressure plate is used to restrict the first limiting member and the second limiting member from moving along their rotation axis.

[0021] Specifically, the first limiting member has a hollow inner limiting cavity, which is open to one side of the second limiting member. The second limiting member extends into the inner limiting cavity through the open side. The inner wall of the inner limiting cavity is provided with a first protrusion, a second protrusion, and a third protrusion spaced circumferentially. These protrusions extend inwards towards the interior of the inner limiting cavity and are arranged sequentially along its circumference. This design fully utilizes the internal space of the first limiting member, further reducing the space occupied by the limiting mechanism. The sequential arrangement of the three protrusions provides a structural basis for the sequential switching of three working states, allowing the limiting mechanism to engage with different protrusions in different states, achieving clear state differentiation and stable state maintenance.

[0022] Specifically, the second limiting member has an abutment groove and a mating groove on its circumference. The abutment groove is positioned opposite each other in a first radial direction on the circumference of the second limiting member, and the mating groove is positioned opposite each other in a second radial direction on the circumference of the second limiting member. The first and second radial directions are perpendicular to each other. The two pairs of grooves are arranged perpendicularly to each other in the radial direction, allowing the second limiting member to form multiple engagement modes with the three bosses after extending into the inner limiting cavity. The alternating engagement of the abutment groove and the mating groove enables the limiting mechanism to switch sequentially between three states. The axially extending groove structure ensures stable contact during relative rotation, improving the reliability of state switching and the smoothness of operation.

[0023] Specifically, the abutting groove and the mating groove extend axially along the second limiting member, so that after the second limiting member extends into the inner limiting cavity, the abutting groove and the mating groove can respectively form a mating relationship with the first boss, the second boss, or the third boss. The axially extending groove structure increases the mating contact length between the boss and the groove, making it less likely for them to misalign or separate during relative rotation; the guiding effect of the axially extending groove makes the movement trajectory of the boss smoother when entering and exiting the groove, reducing the risk of jamming, improving the mating stability and long-term reliability.

[0024] Specifically, when the first limiting member and the second limiting member rotate relative to each other, the engagement relationship between the abutment groove and the mating groove and the first boss, the second boss, or the third boss includes at least one of the following: When the abutment groove abuts against the third protrusion, the limiting end separates from the slot, allowing the rotating component to rotate in the cable pulling direction, forming a cable exit state; or The docking groove and the second boss form a limiting engagement, with the limiting end remaining in contact with the slot to restrict the rotating component from rotating in the cable retraction direction, thus creating a locked state; or When the docking groove abuts against the first boss and the abutting groove abuts against the second boss, the limiting end disengages from the slot, allowing the rotating component to rotate in the cable retraction direction to form a cable retraction state.

[0025] The three states form a complete operation loop. All operations can be completed simply by pulling, stopping, and pulling again. It is simple and convenient to use.

[0026] Specifically, the limiting mechanism further includes a spring plate disposed on the outer end face of the first limiting member; the first end and the second end of the spring plate respectively abut against the mounting cavity, and the spring plate applies an elastic holding force to the first limiting member through its own elastic restoring force to maintain the limiting engagement state of the first limiting member during rotation and position switching. The elastic holding force ensures that the first limiting member is stably held in the corresponding position after switching between the three states, reducing the possibility of unexpected swinging of the limiting end due to vibration; the elastic holding does not rely on mechanical locking, and can still provide a certain degree of limiting holding force when the mechanical locking fails due to wear and tear over long-term use, improving long-term reliability.

[0027] Specifically, the first limiting member and the mounting cavity are detachably connected, and one end of the first limiting member is provided with a first insertion portion; the limiting mechanism also includes a pressure plate, and the inner wall of the outer shell and the pressure plate are provided with positioning holes adapted to the first insertion portion, and the first limiting member rotates around the axis of the positioning hole. The first limiting member can be independently disassembled and assembled without disassembling other components, which facilitates production assembly and subsequent maintenance; if wear occurs after long-term use, it can be replaced separately without replacing the entire retraction assembly, reducing usage costs; the positioning hole structure opposite to the inner wall of the outer shell forms a stable rotational support for the first limiting member.

[0028] Specifically, one end of the first insertion part protrudes axially from one end face of the first limiting member, and the other end of the first insertion part protrudes axially from the other end face of the first limiting member. Both ends of the first insertion part protrude from the end face of the first limiting member, so that after assembly, both ends of the first limiting member are supported by the positioning holes on the inner wall of the outer shell and the pressure plate, respectively, forming a rotating structure supported at both ends. Compared with a single-end cantilever support, the support at both ends makes the first limiting member more evenly stressed during rotation, the rotation axis more stable, and reduces axial misalignment and uneven wear caused by long-term use.

[0029] Specifically, the second limiting member is detachably connected to the mounting cavity, and one end of the second limiting member is provided with a second insertion part; the inner wall of the outer shell and the pressure plate are provided with positioning holes adapted to the second insertion part, and the second limiting member rotates around the axis of the positioning hole. The second limiting member can also be independently disassembled and assembled, cooperating with the insertion structure of the first limiting member, so that the limiting mechanism as a whole can be modularly installed and disassembled; the second limiting member rotates between two oppositely arranged positioning holes, with balanced force and stable rotation; further improving production assembly efficiency and convenience of later maintenance.

[0030] Specifically, the second limiting member is located within the space defined by the first boss, the second boss, and the third boss of the first limiting member. The second limiting member is surrounded and limited by the three bosses, eliminating the need for a separate installation space for the second limiting member inside the housing, thus achieving extreme compression of the axial space; the three bosses also form a radial constraint on the second limiting member, making it less prone to eccentric wobbling during rotation and ensuring the fitting accuracy between the bosses and the groove.

[0031] Specifically, the first boss, the second boss, and the third boss have the same or similar axial height. The consistent height of the three bosses ensures that the second limiting member experiences uniform force when in contact with each boss during rotation, preventing localized stress concentration or uneven wear caused by inconsistent boss heights. The similar heights of the bosses also facilitate one-time machining, reducing manufacturing difficulty and cost, and ensuring dimensional consistency.

[0032] Specifically, at least one protruding post is provided inside the mounting cavity, corresponding to the pressure plate. The pressure plate is positioned opposite to the inner wall of the outer shell, and positioning holes are respectively formed on the surfaces of the outer shell and the pressure plate. The first limiting member and the second limiting member are respectively inserted and connected between the corresponding positioning holes. The pressure plate is used to restrict the first limiting member and the second limiting member from moving along their rotational axis. The pressure plate forms an axial limit on the first limiting member and the second limiting member, reducing the possibility of them separating or moving along the axial direction during repeated rotation, ensuring that the boss and the groove always maintain a relatively stable relative installation position, which is beneficial for continuous position switching between the two, and improving the installation stability and fitting accuracy of the limiting mechanism during long-term reciprocating use.

[0033] The significant technical effects of the embodiments of the present invention are as follows: This invention achieves a compact layout of the limiting mechanism in both the axial and radial directions by at least partially incorporating the second limiting member inside the first limiting member. The second limiting member extends into the hollow inner limiting cavity of the first limiting member, forming a built-in circumferential fit. Compared to the prior art's method of arranging external gears and oscillating components side by side, the built-in structure of this invention fully utilizes the internal space of the first limiting member, reducing the space occupied within the mounting cavity and facilitating the miniaturization and thinning of the data cable device. Simultaneously, the three bosses are arranged sequentially along the circumferential direction of the inner wall of the inner limiting cavity, with the second limiting member located within the space defined by the three bosses. This eliminates the need for additional axial dimensions in the limiting mechanism, further reducing the overall thickness.

[0034] This invention achieves a mechanical sequential switching between three states: cable extension, locking, and cable retraction, through the circumferential engagement between the first and second limiting components. In the cable extension state, the limiting end remains separated from the slot, ensuring the rotating component rotates continuously along the cable extension direction without obstruction. When the user stops pulling, the limiting end automatically enters the slot to lock, maintaining the current extension length of the cable. When the user gently pulls the cable again along the extension direction, a position switch is triggered, the limiting end disengages from the slot, and the rotating component automatically retracts the cable under the drive of the elastic energy storage component. The user only needs three consecutive actions—pull, stop, and pull again—to complete the cable extension, length maintenance, and automatic retraction, eliminating the need for additional buttons, levers, switches, or other operating components. The operation logic is simple and intuitive, reducing the learning curve and ease of use.

[0035] In this invention, the first and second limiting components are detachably installed in the mounting cavity via an insert connection, and work in conjunction with the anti-detachment pressure plate for axial limiting. The limiting mechanism as a whole can be independently disassembled and assembled without disassembling other components, facilitating production assembly and improving production efficiency. Furthermore, if the limiting components wear out after long-term use, they can be replaced individually without replacing the entire retraction assembly, reducing usage and maintenance costs. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of a data cable device according to one embodiment of the present invention; Figure 2 for Figure 1 Another viewpoint structural schematic diagram of the data cable device shown. Figure 3 for Figure 1 A schematic diagram of the internal structure of the mounting cavity; Figure 4 for Figure 1 A schematic diagram of the assembly of the outer shell and the retraction components; Figure 5 for Figure 3 Another perspective view of the internal structure of the mounting cavity shown; Figure 6 This is a schematic diagram of the structure in the outgoing state of the present invention; Figure 7 This is a schematic diagram of the structure in the locked state of the present invention; Figure 8 This is a schematic diagram of the structure in the coil-up state of this invention; Figure 9 This is a three-dimensional exploded structural diagram of the present invention; Figure 10 This is a three-dimensional exploded structural diagram of the present invention from another perspective; Figure 11 This is a schematic diagram of the structure of the first limiting member of the present invention; Figure 12 This is a schematic diagram of the structure of the second limiting member of the present invention; In the diagram: 100, outer casing; 110, mounting cavity; 120, inlet / outlet; 200, cable; 300, retraction assembly; 310, rotating component; 320, first limiting component; 321, inner limiting cavity; 322, first boss; 323, second boss; 324, third boss; 325, limiting end; 330, second limiting component; 331, abutment groove; 332, mating groove; 340, spring plate; 350, slot; 360, protruding post; 370, pressure plate; 380, positioning insertion hole; 381, first insertion part; 382, ​​second insertion part; 390, spring; 400, connecting mechanism; 401, fixing clip; 402, first kit; 403, second kit; 404, positioning post; 405, center kit. Detailed Implementation

[0038] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0040] In the description of the embodiments in this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. It can be the internal connection between two components or the interaction between two components.

[0041] Please see Figures 1-10 This illustration shows a data cable device according to an embodiment of the present invention, including a housing 100, a cable 200, and a take-up / retractor assembly 300. The housing 100 has a mounting cavity 110 and an inlet / outlet 120 communicating with the mounting cavity 110. The take-up / retractor assembly 300 is disposed within the mounting cavity 110 and is rotatable relative to the housing 100. The cable 200 is wound around the take-up / retractor assembly 300, with one end connected to the take-up / retractor assembly 300 and the other end forming a free end that passes through the inlet / outlet 120, allowing it to extend or retract by rotating the take-up / retractor assembly 300. With this basic structure, the housing 100 provides a relatively enclosed mounting space for the cable 200 and the take-up / retractor assembly 300. One end of the cable 200 is fixed to the take-up / retractor assembly 300, and the other end extends through the inlet / outlet 120. The user can extend the cable 200 by pulling the free end and automatically retract it by rotating the take-up / retractor assembly 300, making it simple and convenient to use.

[0042] 1. Assembly relationship of the limit mechanism Please see Figure 9 and Figure 10 The retraction assembly 300 includes a rotating component 310 and a limiting mechanism. The rotating component 310 is rotatably disposed within the mounting cavity 110 and is connected via an elastic energy storage component. This allows the elastic energy storage component to store energy when the cable 200 is pulled outwards and to drive rotation after the limiting mechanism is released. Multiple slots 350 are spaced apart on the circumference of the rotating component 310 to provide locking positions for different cable extension lengths. The rotating component 310 can carry the cable 200 and, through forward rotation, drives a spring to store energy, providing the basic conditions for the cable 200 to be pulled outwards and automatically retracted. The multiple slots 350 on the circumference of the rotating component 310 can provide locking positions for different cable extension lengths. In this embodiment, the elastic energy storage component is a spring; in other embodiments, it can also be a spring.

[0043] The limiting mechanism includes a first limiting member 320 and a second limiting member 330. Please refer to [link / reference]. Figure 9 and Figure 10The first limiting member 320 is movably disposed within the mounting cavity 110 and has a limiting end 325 capable of selectively engaging or disengaging from the slot 350. The second limiting member 330 is movably disposed within the mounting cavity 110 and is at least partially disposed within the first limiting member 320. By disposing the second limiting member 330 at least partially within the first limiting member 320, a circumferential fit is formed between the first limiting member 320 and the second limiting member 330, enabling a compact layout of the limiting mechanism in both the axial and radial directions. Compared to the parallel arrangement of external gears and oscillating components in the prior art, the built-in structure reduces the space occupied within the mounting cavity 110, which is beneficial for the miniaturization and thinning of the data cable device.

[0044] It is understood that the circumferential fit relationship occurs when the first and second limiting members rotate relative to each other around their respective rotation axes. Through structural features on their respective circumferential surfaces or end faces, they form a mutual abutment, engagement, or guiding action in a plane perpendicular to the rotation axis, thereby causing a positional change in the engagement end of the first limiting member relative to the groove of the rotating member. The circumferential fit relationship is not limited to direct contact between the circumferential surfaces of the first and second limiting members, but also includes indirect fit relationships where force or movement is transmitted through intermediate structures. Through the circumferential fit relationship, the present invention achieves the following technical effects: First, the circumferential fit relationship eliminates the need for additional intermediate transmission components (such as swing reset components or gear transmission components in the prior art) between the first limiting member 320 and the second limiting member 330, reducing the number of parts and lowering assembly complexity and manufacturing costs. Second, the circumferential fit relationship integrates the limiting function between the circumferential surfaces and end faces of the first limiting member 320 and the second limiting member 330, resulting in a minimal axial space occupation by the limiting mechanism, which is beneficial for the miniaturization and thinning of the data cable device. Third, the circumferential fit relationship achieves a clear sequential switching through the geometric constraints between the boss and the slot. Each state corresponds to a unique boss and slot fit combination, the state boundaries are clear, and there are no ambiguous intermediate states, thus avoiding jamming or malfunction caused by the uncertainty of the limit mechanism during the state switching process.

[0045] Please see Figure 9 and Figure 10In a preferred embodiment, the first limiting member 320 and the mounting cavity 110 are detachably connected. One end of the first limiting member 320 is provided with a first insertion portion, and the inner wall of the outer shell 100 and the pressure plate 370 are provided with positioning holes 380 adapted to the first insertion portion. The first limiting member 320 rotates around the axis of the positioning holes 380. Similarly, the second limiting member 330 and the mounting cavity 110 are detachably connected by an insertion fitting. One end of the second limiting member 330 is provided with a second insertion portion, and the inner wall of the outer shell 100 and the pressure plate 370 are provided with positioning holes 380 adapted to the second insertion portion. The second limiting member 330 rotates around the axis of the positioning holes 380. With the above-mentioned detachable connection method, the first limiting member 320 and the second limiting member 330 can be independently disassembled and installed without disassembling other components, which facilitates production assembly and subsequent maintenance. At the same time, if wear occurs after long-term use, they can be replaced separately without replacing the entire retraction assembly 300, thus reducing the cost of use.

[0046] It is understood that a detachable connection means that the first limiting member 320 or the second limiting member 330 can be disassembled and reassembled with the housing without damaging any components; that is, the limiting member can be removed from the housing or reinstalled. Detachable connections offer advantages such as convenient assembly, easy maintenance, and easy replacement. In this embodiment, the first limiting member or the second limiting member can be plugged into the housing.

[0047] Please see Figure 3 and Figure 9 In a preferred embodiment, a pair of protruding posts 360 are provided inside the mounting cavity 110, and a pressure plate 370 is fitted onto the protruding posts 360. The pressure plate 370 is disposed opposite to the inner wall of the outer shell 100. Positioning holes 380 are respectively opened on the surfaces of the outer shell 100 and the pressure plate 370. The first limiting member 320 and the second limiting member 330 are respectively inserted and connected between the corresponding positioning holes 380. The pressure plate 370 is used to restrict the first limiting member 320 and the second limiting member 330 from moving along their rotation axis, reducing the possibility of them separating or moving significantly along the rotation axis during repeated rotation. This allows the second limiting member 330 to maintain a relatively stable relative installation position with the inner limiting cavity 321, which is beneficial for the continuous position switching between the abutment groove 331 and the docking groove 332 and different protrusions, and improves the installation stability of the first limiting member 320 and the second limiting member 330 during long-term reciprocating use.

[0048] Please see Figure 5 and Figure 6In a preferred embodiment, the first limiting member 320 has a hollow inner limiting cavity 321 inside, which is open to the side facing the second limiting member 330. The second limiting member 330 extends into the inner limiting cavity 321 through the open side. The inner wall of the inner limiting cavity 321 is provided with a first protrusion 322, a second protrusion 323, and a third protrusion 324 at intervals along the circumference. The first protrusion 322, the second protrusion 323, and the third protrusion 324 extend protruding into the inner limiting cavity 321, and the protrusions are arranged sequentially along the circumference of the inner limiting cavity 321. By extending the second limiting member 330 into the hollow inner limiting cavity 321 inside the first limiting member 320 through its open side, and by providing three circumferentially spaced protrusions on the inner wall of the inner limiting cavity 321, the circumferential engagement between the first limiting member 320 and the second limiting member 330 is concretized into a selective engagement between the protrusions and the second limiting member 330. This built-in structure makes full use of the internal space of the first limiting member 320, further reducing the space occupied by the limiting mechanism within the housing 100. Simultaneously, the sequential circumferential arrangement of the three protrusions provides a structural basis for the sequential switching of three working states.

[0049] Please see Figure 5 and Figure 6 In a preferred embodiment, the second limiting member 330 is provided with a pair of abutting grooves 331 and a pair of mating grooves 332 on its periphery. The pair of abutting grooves 331 are disposed opposite each other in a first radial direction on the periphery of the second limiting member 330, and the pair of mating grooves 332 are disposed opposite each other in a second radial direction on the periphery of the second limiting member 330. The first radial direction and the second radial direction are perpendicular to each other. The abutting grooves 331 and the mating grooves 332 extend along the axial direction of the second limiting member 330, so that after the second limiting member 330 extends into the inner limiting cavity 321, the abutting grooves 331 and the mating grooves 332 can respectively form a sliding fit or an abutting fit with the first boss 322, the second boss 323, or the third boss 324. By providing a pair of abutment grooves 331 and a pair of mating grooves 332 around the second limiting member 330, with the two pairs of grooves arranged radially perpendicular to each other, the second limiting member 330, after extending into the inner limiting cavity 321 of the first limiting member 320, can form multiple engagement modes with the three bosses. The abutment grooves 331 are mainly used to form an abutment engagement with the corresponding bosses in the lead-out and locked states to maintain the position of the first limiting member 320. The mating grooves 332 are mainly used to form a limiting engagement with the corresponding bosses in the locked and retracted states to guide the first limiting member 320 to switch between different positions. The alternating engagement of the two pairs of grooves realizes the sequential switching of the limiting mechanism between the three states, and the axially extending groove structure ensures that the second limiting member 330 and the first limiting member 320 maintain stable engagement contact during relative rotation.

[0050] Please see Figure 5 , Figure 6, Figure 9 and Figure 10 The limiting mechanism also includes a spring sheet 340, which is fitted against the outer end face of the first limiting member 320. The first and second ends of the spring sheet 340 abut against the mounting cavity 110, respectively. The elastic holding member applies an elastic holding force to the first limiting member 320 through its own elastic restoring force, thereby maintaining the limiting engagement state of the first limiting member 320 during rotation and position switching. In this embodiment, the middle part of the spring sheet 340 is fitted against the outer end face of the first limiting member 320, and both ends of the arc-shaped spring sheet 340 are bent and extended towards the inner wall of the mounting cavity 110 and abut against the inner wall of the mounting cavity 110. The spring plate 340 applies a continuous elastic holding force to the first limiting member 320, so that the first limiting member 320 can be stably maintained in the corresponding position after switching between the three states of wire delivery, locking, and wire retraction. This reduces the possibility of the limiting end 325 swinging unexpectedly due to the vibration caused by the rotation of the rotating member 310. At the same time, the setting of the elastic holding member does not rely on the mechanical locking of the limiting mechanism. Even if the mechanical locking fails due to wear and tear from long-term use, it can still provide a certain degree of limiting holding force, which plays a role in redundant protection.

[0051] It is understandable that position switching refers to the process by which the first and second limiting members, under the guidance of their circumferential cooperation, change from their current relative positional relationship to a new relative positional relationship when the data cable device is in a locked state (i.e., the engaging end of the first limiting member and the slot of the rotating member are engaged), in response to the instantaneous pulling force applied by the user to the cable in the pulling direction.

[0052] Specifically, the "position switching" includes at least the following meanings: (a) The position switching is triggered by the rotation of the rotating component again in the pull-out direction. When the cable is in the locked state, the rotating component is blocked by the engagement end and cannot rotate in the retraction direction, but it can still rotate in the cable pull-out direction by a preset angle stroke. This preset angle stroke provides motion input for the position switching. (b) The position switching is a change in the relative position between the first limiting component and the second limiting component. In the locked state, the first limiting component and the second limiting component are in a first relative position. When the rotating component rotates again in the pull-out direction, the first limiting component deflects with the rotation of the rotating component, so that the fit between the boss on the inner wall of the first limiting component and the groove on the second limiting component changes from a locking fit to a retraction fit, that is, the relative position between the first limiting component and the second limiting component changes from the first relative position to the second relative position. (c) The result of the position switching is that the slot disengages from the limiting end. When the relative position between the first limiting member and the second limiting member changes from the locking engagement position to the take-up engagement position, the slot of the first limiting member exits from the limiting end of the rotating member, releasing the restriction on the rotation of the rotating member in the retraction direction.

[0053] Through the aforementioned triggering mechanism and implementation method for position switching, this invention achieves the following technical effects: First, the position switching is triggered by only a slight rotation of the rotating component along the pull-out direction, eliminating the need for additional user operations such as pressing buttons or toggling switches, thus achieving a minimally simplistic operation logic of pulling all the way out. Second, the triggering direction of the position switching is consistent with the cable output direction, both being along the pull-out direction. Users do not need to change the direction of force applied during operation to complete the transition from locked to retracted state, resulting in intuitive operation and reduced learning costs and ease of use. Third, the position switching is guided by the geometric constraints of the circumferential fit, independent of electronic control or external signals, representing a purely mechanical sequential switching with high reliability and environmental adaptability. Fourth, after the position switching is completed, the elastic energy storage component automatically releases its stored energy to drive the rotating component to retract the cable, achieving a one-time trigger, fully automatic cable retraction effect, thus improving the user experience.

[0054] Based on the above structure, the first limiting member 320 and the second limiting member 330 form a circumferential fit relationship, so that when the rotating member 310 rotates, the position of the limiting end 325 relative to the slot 350 is changed by the relative movement between the first limiting member 320 and the second limiting member 330. Specifically, the first boss 322, the second boss 323 and the third boss 324 are arranged sequentially and spaced apart along the circumference of the inner limiting cavity 321. When the first limiting member 320 and the second limiting member 330 rotate relative to each other, the abutment groove 331 and the mating groove 332 switch fits with the first boss 322, the second boss 323 or the third boss 324 to change the position of the limiting end 325 relative to the slot 350. Through the above-mentioned cooperation, the limiting end 325 can be in the avoidance, locking and unlocking states in sequence according to the cable operation process, so that the rotating part 310 is not repeatedly blocked by the limiting end 325 when continuously outputting the cable, can maintain the current position after reaching the used length, and can be unlocked and automatically driven to rotate by the elastic energy storage component after being pulled again.

[0055] 2. Cable output status of the data cable device Please see Figure 6 In the initial state, the limiting end 325 of the first limiting member 320 is in a position that can approach or avoid the slot 350 according to the rotation state of the rotating member 310.

[0056] When the user pulls the cable 200 outward, the cable 200 drives the rotating component 310 to rotate in the pulling direction, while the elastic energy storage component gradually stores energy. In the outgoing state, the limiting end 325 of the first limiting component 320 separates from the slot 350 of the rotating component 310, and the abutting groove 331 of the second limiting component 330 abuts against the third protrusion 324. The first limiting component 320 remains in the position of avoiding the slot 350, so that the rotating component 310 can rotate continuously in the pulling direction of the cable 200. During the cable exit process, the limiting end 325 and the slot 350 remain separated, ensuring that the slot 350 is not blocked by the limiting end 325 when it passes the position of the limiting end 325. The rotating part 310 can rotate continuously and stably along the cable 200 pulling direction, avoiding the limiting end 325 frequently entering the slot 350 during the cable exit stage, which would cause stuttering and jamming. This improves the smoothness of the cable 200 pulling process and reduces the wear and abnormal noise caused by repeated impacts between the limiting end 325 and the edge of the slot 350.

[0057] At this time, the circumferential fit between the first limiting member 320 and the second limiting member 330 is manifested as follows: the abutting groove 331 and the third boss 324 form an abutting fit, and the interaction of forces generated by the abutting between the side wall of the abutting groove 331 and the third boss 324 keeps the first limiting member 320 in the avoidance position. The spring sheet 340 continuously provides elastic pressure to the first limiting member 320, reducing the possibility that the limiting end 325 may accidentally enter the slot 350 due to vibration during the cable exit stage.

[0058] Understandably, the pulling force of the user pulling the cable 200 is transmitted to the rotating component 310 through the cable 200, driving the rotating component 310 to rotate in the pulling direction. The rotation of the rotating component 310 causes the first limiting component 320 to rotate due to the change in the relative position between the slot 350 and the limiting end 325. The rotation of the first limiting component 320 is restricted to an avoidance position by the abutment engagement between the abutment groove 331 and the third boss 324, preventing the limiting end 325 from entering the slot 350. At this time, the elastic energy storage component gradually accumulates restoring force as the rotating component 310 rotates.

[0059] 3. Data cable device locked state Please see Figure 7 When the cable 200 is pulled out to the required length, the user stops pulling. Under the restoring force of the elastic energy storage component, the rotating part 310 tends to rotate in the retraction direction. However, due to the intervention of the limiting mechanism, the rotating part 310 is locked at the current extended length position.

[0060] In the locked state, the limiting end 325 of the first limiting member 320 abuts against one of the slots 350 of the rotating member 310, and the mating groove 332 of the second limiting member 330 forms a limiting engagement with the second boss 323. At this time, the second boss 323 engages with the mating groove 332 to restrict the first limiting member 320 from rotating around its rotation axis in the direction of disengaging from the slot 350, keeping the limiting end 325 within the slot 350, thereby preventing the rotating member 310 from rotating in the direction of cable 200 retraction. Although the elastic energy storage member is in an energy storage state, the rotating member 310 cannot rotate directly after being blocked by the limiting end 325. The second boss 323 and the mating groove 332 form a double limiting, so that the limiting end 325 will not deflect unexpectedly when subjected to the reverse force of the elastic energy storage member, significantly improving the stability of the cable 200 in the fixed-length use state, and making it less likely for the free end of the cable 200 to be pulled back by the elastic energy storage member when plugged in or temporarily placed.

[0061] It is understood that in this invention, the second limiting member 330 is provided with a pair of abutment grooves 331 and a pair of mating grooves 332 on its circumferential side. To adapt to the force requirements and mating methods under different working conditions, the groove depth of the mating groove 332 is configured to be greater than the groove depth of the abutment groove 331. Specifically, taking the circumferential surface of the second limiting member 330 as a reference plane, the first depth of the mating groove 332 recessed radially inward from the reference plane is D1, and the second depth of the abutment groove 331 recessed radially inward from the reference plane is D2, and D1 > D2. The groove depth refers to the radial distance between the bottom wall of the groove and the circumferential reference plane of the second limiting member 330. It should be understood that radially inward refers to the direction towards the rotation axis of the second limiting member 330. The groove depth D1 of the mating groove 332 is greater than the groove depth D2 of the abutment groove 331, so that the mating groove 332 has a larger accommodating space and a deeper mating stroke.

[0062] In this locked state, the mating groove 332, with its larger groove depth D1, can more fully accommodate the second boss 323, allowing the insertion end of the second boss 323 to extend into the bottom region of the mating groove 332, thereby providing a more stable radial engagement between the second boss 323 and the mating groove 332. When the first limiting member 320 experiences a tendency to disengage due to the restoring force of the elastic energy storage member, a larger contact area and a deeper engagement depth are formed between the sidewall of the second boss 323 and the sidewall of the mating groove 332, effectively resisting the rotation of the first limiting member 320 in the disengagement direction.

[0063] The restoring force of the elastic energy storage element is transmitted through the rotating member 310 to the engagement point between the slot 350 and the limiting end 325. This force is then transmitted through the first limiting member 320 to the mating position of the second boss 323 and the mating groove 332. The mating groove 332 and the second boss 323 form a limiting engagement, constraining the rotation angle of the first limiting member 320 around its rotation axis, thus locking the limiting end 325 within the slot 350 and preventing it from disengaging. Ultimately, the spring's restoring force is borne by the insertion connection structure between the second limiting member 330 and the housing 100 through this mechanical path. The spring plate 340 continuously applies an elastic holding force to the first limiting member 320, maintaining it in the corresponding locked position and reducing the possibility of unintended deflection of the first limiting member 320 after being subjected to the reverse force of the spring.

[0064] 4. Data cable retraction status Please see Figure 8 After use, the user gently pulls the cable 200 again in the pulling direction, causing the rotating component 310 to continue rotating and causing the first limiting component 320 and the second limiting component 330 to switch positions in the next stage. In the retracted state, the mating groove 332 of the second limiting component 330 abuts against the first boss 322 of the first limiting component 320, and the abutting groove 331 abuts against the second boss 323, and the limiting end 325 of the first limiting component 320 disengages from the slot 350 of the rotating component 310.

[0065] Guided by the second limiter 330, the first limiter 320 remains in the position of avoiding the slot 350, allowing the rotating member 310 to rotate freely in the direction of cable 200 retraction when the elastic energy storage member releases its stored energy, thus retracting the cable 200. At this time, the spring releases the previously accumulated elastic potential energy and drives the rotating member 310 to rotate in the opposite direction, and the cable 200 gradually rewinds onto the take-up and release assembly 300 as the rotating member 310 rotates. During the cable retraction process, the second limiter 330 keeps the first limiter 320 in the position of avoiding the slot 350, and the spring plate 340 continuously provides elastic pressure to the first limiter 320, reducing the possibility of the limiter end 325 re-entering the slot 350 during the retraction process and causing midway stopping. Through the coordination between the secondary pull trigger unlocking, the spring rotation for cable retraction, and the continuous avoidance by the limiter end 325, the cable 200 can be automatically retracted after use, reducing the problems of exposed tangles, bending damage, and inconvenience of manual handling of the cable 200.

[0066] 5. Connecting mechanism Please see Figure 4 , Figure 9 and Figure 10In a preferred embodiment, a connecting mechanism 400 is also included, which is disposed between the rotating member 310 and the cable 200. The connecting mechanism 400 includes multiple fixing clips 401, a first assembly 402, a second assembly 403, multiple positioning posts 404, and a central assembly 405. The fixing clips 401 are all disposed on the surface of the rotating member 310, and the positioning posts 404 are all fixed to the surface of the rotating member 310. The central assembly 405 is fitted onto the positioning posts 404, and its bottom abuts against the rotating member 310. The first assembly 402 and the second assembly 403 are both fitted onto the central assembly 405, and are inserted into each other. One end of the cable 200 is fixedly connected to the first assembly 402 and can be wound around the outer walls of the first assembly 402 and the second assembly 403. Through the aforementioned connecting mechanism 400, one end of the cable 200 is stably connected to the winding area of ​​the rotating component 310. The positioning post 404 can position the central component 405 so that the central component 405 maintains a relatively stable position when the rotating component 310 rotates. The first component 402 and the second component 403 are fitted onto the central component 405 and inserted into each other to form an outer peripheral support structure for the cable 200 to be wound, so that the fixing point, winding surface and outer limit of the cable 200 form a continuous fit.

[0067] Multiple retaining clips 401 are arranged at intervals around the first kit 402 and the second kit 403, and are located outside the area where the cable 200 is wound, to limit the cable 200 wound outside the first kit 402 and the second kit 403. The retaining clips 401 form a stop boundary outside the winding area. When the cable 200 is retracted, the outer coil is restricted by the retaining clips 401 and is less likely to slide towards the edge of the rotating part 310. This can reduce the situation where the cable 200 is scattered and stacked, partially raised or squeezed by the inner wall of the outer shell 100 in the mounting cavity 110, so that when the cable 200 is pulled out again, it can still be released along a relatively stable winding path, thereby improving the neatness after automatic storage and the smoothness during reuse.

[0068] Multiple positioning posts 404 are spaced apart around the center position of the central assembly 405. The central assembly 405 is positioned on the rotating component 310 by the multiple positioning posts 404. The first assembly 402 and the second assembly 403 are sequentially fitted together along the axial direction of the central assembly 405. The positioning posts 404 can provide multi-point support for the central assembly 405, making it less prone to eccentric wobbling during the continuous forward and reverse rotation of the rotating component 310. After the first assembly 402 and the second assembly 403 are sequentially fitted together, they can form a winding bearing area with axial width, allowing the cable 200 to be wound along a wider support surface during the retraction process, thereby reducing uneven winding and local stacking of the cable 200 caused by the offset of the winding structure.

[0069] After the first kit 402 and the second kit 403 are inserted into each other, they maintain circumferential linkage, and the outer walls of the first kit 402 and the second kit 403 are connected to each other to allow the cable 200 to be continuously wound, and to allow the cable 200 to be released or retracted as the rotating part 310 rotates. After the first kit 402 and the second kit 403 are inserted, they can synchronously bear the circumferential force generated when the cable 200 is pulled out and retracted, avoiding slippage of a single kit relative to the rotating part 310 that would cause the cable 200 to loosen. The connection of the outer walls of the two kits can reduce the discontinuity of the winding surface, making it less likely for the cable 200 to be scratched or stuck by the step part when it is released and retracted, thereby improving the continuity of the cable 200 release and retraction action and the durability of the winding part.

[0070] Based on the above embodiments, the present invention also provides several alternative embodiments, as follows: In another embodiment, a helical spring can be used instead of the spring sheet 340. One end of the helical spring abuts against the inner wall of the mounting cavity, and the other end abuts against the outer end face of the first limiting member. The compression deformation of the helical spring applies an axial elastic holding force to the first limiting member. This solution can also achieve the function of "maintaining the limiting engagement state of the first limiting member during rotation and position switching". Those skilled in the art should understand that any elastic element capable of applying an elastic holding force to the first limiting member can be used instead of the spring sheet, and all are equivalent embodiments of the present invention.

[0071] In another embodiment, the inner wall of the limiting cavity of the first limiting member may be provided with four or more bosses, and the periphery of the second limiting member may be provided with three or more pairs of groove structures. As long as the first limiting member and the second limiting member can switch between the three states of wire delivery, locking, and wire retraction through a circumferential fit, they are all within the scope of the present invention.

[0072] In another embodiment, the cross-sectional shapes of the first, second, and third bosses are not limited to rectangular or trapezoidal shapes, but can be arc-shaped, triangular, or other irregularly shaped cross-sections; the shapes of the abutment groove and the mating groove can be adapted to the bosses. As long as abutment or limiting fit can be achieved at different rotation angles, it is an alternative implementation of the present invention. Those skilled in the art should understand that the specific cross-sectional shapes of the bosses and grooves can be adaptively adjusted according to the processing technology and stress requirements without affecting the realization of the core inventive point of the present invention.

[0073] In another embodiment, for the movable setting, the first limiting member and the second limiting member are not limited to being rotatably set in the mounting cavity by means of "positioning socket insertion", but can also adopt shaft hole fit, bearing fit or other equivalent rotational connection methods, all of which are alternative implementations of the present invention.

[0074] In another embodiment, the elastic energy storage element is not limited to a spring, but may also be a torsion spring, a coil spring or other elastic element capable of storing and releasing rotational force. All of the above alternatives fall within the scope of protection.

[0075] 6. Overall Work Process Please see Figures 1 to 10 As a complete embodiment, in use, the cable 200 is pre-wound in the winding area corresponding to the rotating member 310, and its free end extends out from the inlet and outlet 120 of the housing 100. The rotating member 310 and the elastic energy storage member form a transmission relationship.

[0076] In the initial state, the limiting end 325 of the first limiting member 320 is positioned to approach or avoid the slot 350 according to the rotation state of the rotating member 310. The second limiting member 330 extends into the inner limiting cavity 321 of the first limiting member 320, and controls the working state of the first limiting member 320 by the positional changes between the abutment groove 331 and the mating groove 332 and the first boss 322, the second boss 323 and the third boss 324. The spring sheet 340 is attached to the outer end face of the first limiting member 320. The first limiting member 320 is continuously subjected to elastic holding force through its own elastic restoring force, so that the first limiting member 320 can maintain the corresponding mating position after switching between different working states. At the same time, the first limiting member 320 and the second limiting member 330 are inserted and connected between the positioning insertion hole 380 of the outer shell 100 and the pressure plate 370, which are respectively arranged opposite to each other. The pressure plate 370 is installed in the mounting cavity 110 through the protrusion 360 to form a rotational support and axial anti-dislodgement for the first limiting member 320 and the second limiting member 330.

[0077] When the user pulls the cable 200 outward, the cable 200 drives the rotating member 310 to rotate in the pulling direction, while the spring gradually stores energy. In the outgoing state, the limiting end 325 of the first limiting member 320 is separated from the slot 350 on the periphery of the rotating member 310, and the abutting groove 331 of the second limiting member 330 abuts against the third boss 324, keeping the first limiting member 320 in the avoidance position. The spring plate 340 continuously provides elastic pressure to the first limiting member 320, and the rotating member 310 can rotate continuously in the pulling direction, allowing the cable 200 to extend outward as needed.

[0078] When the cable 200 is pulled out to the required length and the corresponding position is switched, the limiting end 325 of the first limiting member 320 enters one of the slots 350 of the rotating member 310, which restricts the rotating member 310 in the retraction direction. Although the spring remains in the stored energy state, it cannot immediately drive the rotating member 310 to rotate in the opposite direction, so that the cable 200 maintains the current extended length.

[0079] After use, gently pull the cable 200 again in the pull-out direction to allow the rotating component 310 to continue rotating and cause the first limiting component 320 and the second limiting component 330 to switch positions in the next stage. The second limiting component 330 and the first boss 322 form a corresponding engagement, causing the limiting end 325 of the first limiting component 320 to exit from the slot 350. The rotating component 310 is released from the restriction in the retraction direction, the spring releases the previously accumulated elastic potential energy and drives the rotating component 310 to rotate in the opposite direction. The cable 200 gradually rewinds onto the take-up and release assembly 300 as the rotating component 310 rotates. The second limiting component... During the cable retraction process, component 330 keeps the first limiting component 320 in the position of avoiding the slot 350. The spring plate 340 continuously provides elastic pressure to the first limiting component 320, reducing the possibility that the limiting end 325 may re-enter the slot 350 during the retraction process and cause midway stopping. The protrusion 360, pressure plate 370 and positioning hole 380 provide auxiliary installation and positioning for the first limiting component 320 and the second limiting component 330 throughout the entire operation, so that the two maintain a stable rotational position, thereby completing the mechanical sequential switching of the cable 200 from the cable exit state, the locked state to the cable retraction state.

[0080] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of protection of the claims of the present invention.

Claims

1. A retractable assembly for a data cable device, characterized in that, The retraction / extension component includes: A rotating component, wherein at least one slot is provided on the circumference of the rotating component; The limiting mechanism includes a first limiting member and a second limiting member, wherein the second limiting member is at least partially disposed inside the first limiting member, and the first limiting member and the second limiting member form a circumferential fitting relationship, and the first limiting member has a limiting end capable of selectively engaging or disengaging from the slot; The first limiting member and the second limiting member are configured such that, during the rotation of the rotating member, the interaction of forces generated by the circumferential fit relationship drives the slot to switch back and forth between the disengaged position and the engaged position, thereby forming the lead-out state, the locked state and the take-up state respectively.

2. The retractable assembly according to claim 1, characterized in that: The first limiting member has a hollow inner limiting cavity inside, which is open to one side facing the second limiting member, and the second limiting member extends into the inner limiting cavity through the open side.

3. The retractable assembly according to claim 2, characterized in that: The inner wall of the inner limiting cavity is provided with a first protrusion, a second protrusion and a third protrusion at intervals along the circumference. The first protrusion, the second protrusion and the third protrusion extend protruding into the inner limiting cavity, and the first protrusion, the second protrusion and the third protrusion are arranged sequentially along the circumference of the inner limiting cavity.

4. The retractable assembly according to claim 3, characterized in that: The second limiting member is located within the space defined by the first boss, the second boss, and the third boss.

5. The retractable assembly according to claim 3, characterized in that: The first boss, the second boss, and the third boss have the same or similar axial height.

6. The retractable assembly according to claim 1, characterized in that: The second limiting member has an abutment groove and a mating groove on its periphery. The abutment groove is disposed opposite to each other in a first radial direction on the periphery of the second limiting member, and the mating groove is disposed opposite to each other in a second radial direction on the periphery of the second limiting member. The first radial direction and the second radial direction are perpendicular to each other.

7. The retractable assembly according to claim 6, characterized in that: The abutting groove and the mating groove extend along the axial direction of the second limiting member, so that after the second limiting member extends into the inner limiting cavity, the abutting groove and the mating groove can respectively form a mating relationship with the first boss, the second boss or the third boss.

8. The retractable assembly according to claim 6, characterized in that: The depth of the docking groove is greater than the depth of the abutment groove.

9. The retractable assembly according to claim 6, characterized in that: When the first limiting member and the second limiting member rotate relative to each other, the engagement relationship between the abutment groove and the mating groove and the first boss, the second boss, or the third boss includes at least one of the following: When the abutting groove abuts against the third protrusion, the limiting end separates from the slot, and the rotating component can rotate along the cable pulling direction to form the cable exit state; or The mating groove and the second boss form a limiting engagement, and the limiting end remains engaged with the slot to restrict the rotating component from rotating in the cable retraction direction, thus forming the locked state; or When the docking groove abuts against the first boss, the limiting end disengages from the slot, and the rotating component can rotate in the cable retraction direction to form the cable retraction state.

10. The retractable assembly according to claim 1, characterized in that: The limiting mechanism further includes a spring sheet, which is disposed on the outer end face of the first limiting member; The spring plate applies an elastic holding force to the first limiting member through its own elastic restoring force, so as to maintain the limiting engagement state of the first limiting member during rotation and position switching.

11. The retractable assembly according to claim 1, characterized in that: One end of the first limiting member is provided with a first insertion part, which is used to connect with the positioning insertion hole of the outer shell, so that the first limiting member can rotate around the axis of the positioning insertion hole. One end of the first insertion part protrudes axially from one end face of the first limiting member, and the other end of the first insertion part protrudes axially from the other end face of the first limiting member.

12. The retractable assembly according to claim 11, characterized in that: One end of the second limiting member is provided with a second insertion part, which is used to connect with the positioning hole of the outer housing, so that the second limiting member can rotate around the axis of the positioning hole.

13. The retractable assembly according to claim 12, characterized in that: The limiting mechanism further includes a pressure plate, which has a positioning hole. The positioning hole is correspondingly provided with the first insertion part and the second insertion part to axially limit the first limiting member and the second limiting member between the pressure plate and the inner wall of the outer shell.

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