Stretchable wire device

Abstract

The utility model provides a telescopic line device, and relates to the technical field of electronic equipment. The telescopic line device comprises a shell, a rotating part, a cable, a triggering assembly and a detection circuit, the triggering assembly comprises a first triggering part and a second triggering part, the first triggering part is fixed to the rotating part, the second triggering part is fixed to the shell, and the triggering assembly is configured to be that when the first triggering part is driven by the rotating part to a preset position, the cable is driven by the rotating part to rotate; the first triggering piece is in contact conduction with the second triggering piece, and the detection circuit is electrically connected with the triggering assembly and used for detecting the on-off state of the first triggering piece and the second triggering piece. According to the application, the first trigger piece, the second trigger piece and the detection circuit are arranged, so that when the stretching state of the cable is changed, the first trigger piece is driven by the rotating piece to move, and when the first trigger piece moves to a preset position, the detection circuit can detect that the on-off state of the first trigger piece and the second trigger piece is changed; and the change of the stretching state of the cable can be judged.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a retractable wire device. Background Art

[0002] With the development of technology, cables are increasingly used in people's lives, especially data cables for charging or data transmission. Because cables are inconvenient to store when not in use, retractable cable devices have emerged. A retractable cable device is a device with a retractable cable that allows the user to pull the cable out when in use and retract it when not in use. Due to the characteristics of retractable cable devices, the control of their functions is closely related to the cable's extension status. Therefore, related retractable cable devices are generally unable to accurately determine the extension status of the cable. Utility Model Content

[0003] An embodiment of the present application provides a retractable wire device, comprising:

[0004] case;

[0005] A rotating member rotatably disposed in the housing;

[0006] The cable includes a winding portion and a drawing portion, wherein the winding portion is wound on the rotating member and the drawing portion extends from the winding portion to the outside of the housing;

[0007] A trigger assembly, the trigger assembly comprising a first trigger member and a second trigger member, wherein the first trigger member is fixed to the rotating member, and the second trigger member is fixed to the housing, and the trigger assembly is configured such that when the first trigger member is driven by the rotating member to a preset position, the first trigger member contacts and conducts with the second trigger member; and

[0008] The detection circuit is electrically connected to the trigger component and is used to detect the on / off status of the first trigger component and the second trigger component.

[0009] Different from the prior art, the telescopic wire device provided by this application has the following beneficial effects:

[0010] The present application winds the winding portion of the cable on a rotating member so that the rotating member rotates as the cable stretches or retracts. The present application also provides a first trigger member fixed to the rotating member and a second trigger member fixed to the shell, and configures the trigger assembly so that when the first trigger member is driven to a preset position by the rotating member, it will contact and conduct with the second trigger member. Therefore, when the tensile state of the cable changes, the rotating member will drive the first trigger member to rotate under the drive of the cable. Then, when the first trigger member moves to the preset position, since the first trigger member is in contact and conduction with the second trigger member, the detection circuit electrically connected to the trigger assembly can detect the change in the on-off state of the first trigger member and the second trigger member, and thus it can be determined that the tensile state of the cable has changed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0012] Figure 1 is a schematic diagram of the three-dimensional structure of the retractable wire device provided in some embodiments of the present application;

[0013] Figure 2 is a schematic cross-sectional structural diagram of a retractable wire device provided in some embodiments of the present application;

[0014] Figure 3 is a schematic diagram of the exploded structure of the retractable wire device provided in some embodiments of the present application;

[0015] Figure 4 is a partial structural diagram of a retractable wire device provided in some embodiments of the present application;

[0016] Figure 5 is a schematic diagram of the three-dimensional structure of a portion of a retractable wire device provided in some embodiments of the present application;

[0017] Figure 6 yes Figure 5 A schematic diagram of the exploded structure of a portion of the telescopic wire device in the embodiment;

[0018] Figure 7 yes Figure 5 A schematic diagram of the three-dimensional structure of another part of the retractable wire device in the embodiment;

[0019] Figure 8 is a schematic diagram of the three-dimensional structure of a portion of a retractable wire device provided in other embodiments of the present application;

[0020] Figure 9 yes Figure 8 A schematic diagram of the three-dimensional structure of another part of the retractable wire device in the embodiment;

[0021] Figure 10 is a schematic diagram of an equivalent circuit of a trigger component and a detection circuit in a first state provided by some embodiments of the present application;

[0022] Figure 11 yes Figure 10 Schematic diagram of an equivalent circuit of the trigger component and the detection circuit in the second state in the embodiment;

[0023] Figure 12 is a schematic diagram of the waveform of the electrical signal measured by the detection circuit provided in some embodiments of the present application;

[0024] Figure 13 is a partial perspective structural schematic diagram of the telescopic cord device provided by some embodiments of the present application;

[0025] Figure 14 is an equivalent circuit schematic diagram of the trigger assembly and detection circuit in the third state in the embodiments of the present application;

[0026] Figure 15 is an equivalent circuit schematic diagram of the trigger assembly and detection circuit in the fourth state in the embodiments of the present application; Figure 14

[0027] Figure 16 is a waveform schematic diagram of the electrical signal measured by the detection circuit when the cable is pulled out in some embodiments of the present application;

[0028] Figure 17 is a waveform schematic diagram of the electrical signal measured by the detection circuit when the cable is retracted in the embodiments of the present application; Figure 16

[0029] Figure 18 is a partial perspective structural schematic diagram of the telescopic cord device provided by some embodiments of the present application. DETAILED DESCRIPTION

[0030] In the following description, specific details are set forth in order to provide a thorough understanding of the embodiments of the present application. However, persons having ordinary skill in the art will readily recognize that the application can be practiced without these specific details. In other instances, well-known structures, devices, circuits, and methods have not been described in detail in order to avoid obscuring the application.

[0031] In order to make the above objectives, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. It can be understood that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons having ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0032] The present application provides a telescopic cord device. Please refer to Figure 1 , Figure 1 is a perspective structural schematic diagram of the telescopic cord device provided by some embodiments of the present application.

[0033] ​​In some embodiments, the retractable cord device 10 comprises a cord 100 and a housing 200. The cord 100 can be stretched out of the housing 200 and retracted into the housing 200. The cord 100 comprises a pulling portion 110 which is located outside the housing 200. The retractable cord device 10 can use the pulling portion 110 to pull the portion of the cord 100 which is located inside the housing 200 out of the housing 200.

[0034] It should be understood that the terms "comprise" and "have", and any variations thereof, used in the specification and in the claims are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device that comprises a list of steps or units is not limited to the listed steps or units, but can optionally further include other steps or units not listed, or can optionally further include other steps or units inherent to such processes, methods, products or devices.

[0035] Please refer to Figures 2 to 4 , Figure 2 is a cross-sectional structural schematic diagram of a retractable cord device provided by some embodiments of the present application, Figure 3 is an exploded structural schematic diagram of a retractable cord device provided by some embodiments of the present application, Figure 4 is a partial structural schematic diagram of a retractable cord device provided by some embodiments of the present application.

[0036] The cord 100 further comprises a winding portion 120. The winding portion 120 can be retracted into the housing 200. The retractable cord device 10 further comprises a rotating member 300 which is rotatably arranged in the housing 200. The winding portion 120 is wound on the rotating member 300, and the pulling portion 110 extends from the winding portion 120 to outside the housing 200, so that when the pulling portion 110 is pulled, the winding portion 120 wound on the rotating member 300 will be pulled out, thereby driving the rotating member 300 to rotate relative to the housing 200.

[0037] The retractable cord device 10 further comprises a triggering assembly 400 and a detection circuit 411. The triggering assembly 400 comprises a first triggering member 410 and a second triggering member 420, the first triggering member 410 is fixed with the rotating member 300, and the second triggering member 420 is fixed with the housing 200. The triggering assembly 400 is configured to be in contact and conductive with the second triggering member 420 when the first triggering member 410 is driven by the rotating member 300 to a preset position. The detection circuit 411 is electrically connected with the triggering assembly 400, and is used to detect the on-off state of the first triggering member 410 and the second triggering member 420.

[0038] The first trigger member 410 can be directly fixed to the rotating member 300 or fixed to the rotating member 300 through other devices. The second trigger member 420 can be directly fixed to the shell 200 or fixed to the shell 200 through other devices. The telescopic cable device 10 can use the feature that the rotating member 300 rotates relative to the shell 200 when the pulling state of the cable 100 changes, to make the first trigger member 410 move relative to the second trigger member 420, by fixing the first trigger member 410 to the rotating member 300 and fixing the second trigger member 420 to the shell 200. For example, when the cable 100 is pulled out, the rotating member 300 rotates in the positive direction, and at this time, the first trigger member 410 moves in a circular motion around the rotation center of the rotating member 300.

[0039] The trigger assembly 400 is configured such that when the first trigger member 410 is driven by the rotating member 300 to a preset position, the first trigger member 410 contacts and conducts with the second trigger member 420. It can be understood that when the first trigger member 410 moves under the influence of the stretching or retraction of the cable 100, since the movement of the first trigger member 410 relies on the rotation of the rotating member 300, the movement track of the first trigger member 410 is predictable. The above-mentioned preset position is a position in the movement track of the first trigger member 410, which corresponds to the setting position of the second trigger member 420. When the first trigger member 410 moves to the preset position, it can contact the second trigger member 420.

[0040] Specifically, the part of the second trigger member 420 for conducting with the first trigger member 410 can be located at the preset position, i.e., on the movement track of the first trigger member 410, so that when the first trigger member 410 moves to the preset position, it can contact and conduct with the second trigger member 420. The part of the second trigger member 420 for conducting with the first trigger member 410 can also be located near the preset position, and the distance between the part and the preset position can be set according to the relevant dimensions of the first trigger member 410 and the second trigger member 420, so that when the first trigger member 410 moves to the preset position, it can contact and conduct with the second trigger member 420.

[0041] The detection circuit 411 is electrically connected with the trigger assembly 400, and can be electrically connected with the first trigger member 410 or the second trigger member 420. When the first trigger member 410 and the second trigger member 420 switch from the separated state to the contacted state, the detection circuit 411 can detect that the on-off state of the first trigger member 410 and the second trigger member 420 changes. Similarly, when the first trigger member 410 and the second trigger member 420 switch from the contacted state to the separated state, the detection circuit 411 can also detect that the on-off state of the first trigger member 410 and the second trigger member 420 changes.

[0042] Through the above-mentioned design, the embodiment of the present application can link the position change of the first trigger member 410 with the change in the pulling state of the cable 100, so that the retractable wire device 10 can determine whether the pulling state of the cable 100 has changed by detecting the on and off states of the first trigger member 410 and the second trigger member 420.

[0043] It should be understood that the terms used in this specification and the appended claims are only for the purpose of describing specific embodiments and are not intended to limit this application. As used in this specification and the appended claims, unless the context clearly indicates otherwise, the singular forms of "a", "an" and "the" are intended to include the plural forms. For example, the terms "first" and "second" in the description of this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. For example, in the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0044] The retractable cable device 10 may include a coil spring 500. The coil spring 500 may be disposed within the housing 200, with one end secured to the housing 200 and the other end secured to the rotating member 300. Thus, when the rotating member 300 rotates due to the cable 100 being pulled, the coil spring 500 gradually accumulates potential energy as the rotating member 300 rotates. When the cable 100 is released, the coil spring 500 drives the rotating member 300 to rotate in the opposite direction, causing the cable 100 to automatically retract.

[0045] Optionally, the retractable cable device 10 further includes a rotating shaft 510. The rotating shaft 510 can be plugged into the rotating member 300 and fixed to the housing 200. The rotating member 300 can be rotatably connected to the housing 200 via the rotating shaft 510. One end of the coil spring 500 can be connected to the rotating member 300 and the other end can be connected to the rotating shaft 510. This is used to provide a reverse rotation force to the rotating member 300 when the winding portion 120 of the cable 100 is pulled out of the housing 200.

[0046] The rotating shaft 510 can be fixedly connected to the housing 200 through other devices, such as Figure 3 The fixing cap 520 shown is fixed to the housing 200. The rotating shaft 510 can also be directly fixedly connected to the housing 200, and the connection method is for example but not limited to a snap connection, a threaded connection, etc. The rotating shaft 510 can also be integrally formed with the housing 200. Figure 3 In other embodiments, the rotating shaft 510 may also be a part of another device, for example, the rotating shaft 510 may be protruded on a bottom shell opposite to the housing 200 .

[0047] The retractable cord device 10 can include a first circuit board 610. The detection circuit 411 can be disposed on the first circuit board 610. The first trigger 410 or the second trigger 420 can be disposed on the first circuit board 610, so that the trigger assembly 400 can be electrically connected with the detection circuit 411 through the first circuit board 610. The first circuit board 610 can also be electrically connected with the cord 100, so that the cord 100 can be electrically connected with the detection circuit 411 through the first circuit board 610.

[0048] In some embodiments, the first circuit board 610 can be fixed with the rotating member 300, the first trigger 410 is disposed on the first circuit board 610, and the second trigger 420 is disposed on the housing 200 or another member fixed with the housing 200, such as a piece of hardware board opposite to the first circuit board 610. In other embodiments, the first circuit board 610 can be fixed with the housing 200, the second trigger 420 is disposed on the first circuit board 610, and the first trigger 410 is disposed on the rotating member 300 or another member fixed with the rotating member 300.

[0049] Alternatively, the retractable cord device 10 can also include a second circuit board 620. The detection circuit 411 can also be disposed at other positions as needed, such as on the second circuit board 620. In this embodiment, the first circuit board 610 is fixed with the rotating member 300, and the first trigger 410 is disposed on the first circuit board 610. The second circuit board 620 is fixed with the housing 200, and the second trigger 420 is disposed on the second circuit board 620. The second circuit board 620 can be disposed opposite to the first circuit board 610. The first trigger 410 and the second trigger 420 are respectively disposed on two surfaces of the first circuit board 610 and the second circuit board 620 opposite to each other, such as Figure 2 As shown, the first trigger 410 can be disposed on the bottom surface of the first circuit board 610, and the second trigger 420 can be disposed on the top surface of the second circuit board 620, which are opposite to each other. The first circuit board 610 can be directly or indirectly fixed with the rotating member 300, for example, the first circuit board 610 can be fixed with the rotating member 300 by means of a fixing nail 530 as shown. Figure 2 and Figure 3 The second circuit board 620 can be directly or indirectly fixed with the housing 200, for example, but not limited to, nailing, clamping, etc.

[0050] In other words, the retractable cable device 10 can utilize two circuit boards to mount the first trigger member 410 and the second trigger member 420, respectively. One of the circuit boards rotates synchronously with the rotating member 300, while the other is fixed relative to the housing 200. Thus, when the cable 100 is pulled out of position, the two circuit boards can rotate relative to each other, allowing the first trigger member 410 and the second trigger member 420 to move relative to each other. In other embodiments, the retractable cable device 10 can also include only one circuit board, namely the first circuit board 610.

[0051] It can be understood that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In some embodiments, the retractable cord device 10 may include a functional circuit 422. The functional circuit 422 may be electrically connected to the cable 100 and the detection circuit 411, respectively, to control a preset function based on the on / off status of the first trigger member 410 and the second trigger member 420. The specific structure of the functional circuit 422 and the preset function it controls may be determined based on the application of the retractable cord device 10.

[0053] For example, if the retractable cord device 10 is a charging device, the functional circuit 422 may be a charging circuit, and the preset function it controls may be charging. For another example, if the retractable cord device 10 is a storage device, the functional circuit 422 may be an information transmission circuit, and the preset function it controls may be information transmission. The retractable cord device 10 may include one or more functional circuits 422, and multiple functional circuits 422 may be used to control different preset functions.

[0054] In some application scenarios, when the extension state of the cable 100 of the retractable cable device 10 changes, for example, when the cable 100 is pulled out or retracted, the rotating member 300 is driven by the cable 100 to rotate, thereby driving the first trigger member 410 to move. When the extension state of the cable 100 changes to a preset state, the detection circuit 411 can detect a change in the on / off state of the first trigger member 410 and the second trigger member 420, and the functional circuit 422 can control a preset function based on the on / off state of the first trigger member 410 and the second trigger member 420. For example, when the length of the extended portion of the cable 100 reaches a preset length, the detection circuit 411 detects that the first trigger member 410 has moved into contact with the second trigger member 420, at which point the functional circuit 422 can control the activation of the preset function. Of course, the application of the retractable cable device 10 is not limited to the above example.

[0055] The functional circuit 422 can be disposed on the first circuit board 610 or the second circuit board 620, and electrically connected to the cable 100 and the detection circuit 411 via the first circuit board 610 or the second circuit board 620. The structure of the retractable cable device 10 will be further described below, primarily using an example in which the retractable cable device 10 includes a first circuit board 610 and a second circuit board 620, with the first trigger 410 disposed on the first circuit board 610 and the second trigger 420 disposed on the second circuit board 620. It will be appreciated that the configuration of the retractable cable device 10 described below can also be applied to embodiments in which the retractable cable device 10 includes only the first circuit board 610, or to embodiments in which the second trigger 420 is disposed on the first circuit board 610 and the first trigger 410 is disposed on the second circuit board 620.

[0056] See also Figure 2 、 Figure 5 and Figure 6 , Figure 5 is a schematic diagram of the three-dimensional structure of a portion of the retractable wire device provided in some embodiments of the present application. Figure 6 yes Figure 5 Schematic diagram of the exploded structure of part of the telescopic wire device in the embodiment.

[0057] In some embodiments, the rotating member 300 may include a limiting plate 310 and a winding post 320, wherein the winding post 320 is protruded from the limiting plate 310. The winding portion 120 of the cable 100 can be wound on the winding post 320. One of the first circuit board 610 and the second circuit board 620 is fixed to an end of the winding post 320 away from the limiting plate 310, and covers opposite sides of the winding portion 120 together with the limiting plate 310. The other of the first circuit board 610 and the second circuit board 620 is fixed to the housing 200.

[0058] Taking the first circuit board 610 as an example, the first circuit board 610 can be fixed directly or indirectly to the winding post 320, for example, by Figure 6 The fixing pin 530 is shown fixed to the winding post 320. The rotating shaft 510 can be inserted into the first circuit board 610 and plugged into the rotating member 300. The limiting plate 310 and the first circuit board 610 can be respectively covered on the winding portion 120 of the cable 100 from opposite sides of the winding post 320 to cooperate with each other to limit the position of the winding portion 120 so that the winding portion 120 can be stacked and wound on the winding post 320. The first trigger member 410 can be disposed on the side of the first circuit board 610 facing away from the rotating member 300.

[0059] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, terms such as "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections, electrical connections, or mutual communication; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0060] See also Figure 2 、 Figure 5 and Figure 7 , Figure 7 yes Figure 5 A schematic diagram of the three-dimensional structure of another part of the retractable wire device in the embodiment.

[0061] In some embodiments, the first trigger member 410 may be a spring. The second trigger member 420 may be an arc-shaped piece. The contact ends of the first trigger member 410 and the second trigger member 420 may both be conductive. The number of the first trigger member 410 and the second trigger member 420 may both be one. During the process of the cable 100 being pulled out or retracted, whenever the first trigger member 410 moves to a preset position corresponding to the second trigger member 420, the first trigger member 410 will contact and connect with the second trigger member 420. At this time, the detection circuit 411 can detect a change in the on-off state, such as detecting an increase in the electrical level; when the first trigger member 410 moves to separate from the second trigger member 420, the detection circuit 411 can detect a change in the on-off state, such as detecting a decrease in the electrical level. In an embodiment of the present application, the retractable wire device 10 can detect the on-off state of the first trigger member 410 and the second trigger member 420 through the detection circuit 411, so as to make a judgment on the pulling state of the cable 100.

[0062] Optionally, the retractable cable device 10 further includes a transmission assembly 700. The transmission assembly 700 can be electrically connected to the cable 100 via the first circuit board 610. The transmission assembly 700 can be used to transmit signals to meet the functional requirements of the retractable cable device 10. The transmission assembly 700 can include a conductive slip ring 710 and a conductive spring 720, with the conductive slip ring 710 and the conductive spring 720 in contact and conductive communication. The conductive slip ring 710 is annular, and the conductive spring 720 abuts against the conductive slip ring 710. Optionally, there are multiple conductive slip rings 710 and multiple conductive springs 720. The multiple conductive slip rings 710 have different radii but the same center. In other words, the multiple conductive slip rings 710 are arranged in a concentric ring structure. The multiple conductive springs 720 are in contact and conductive communication with the multiple conductive slip rings 710 in a one-to-one correspondence, with each conductive spring 720 abutting against a specific conductive slip ring 710.

[0063] Each of the conductive slip rings 710 and the conductive spring 720 can be used to transmit a signal, such as but not limited to V+ and V- signals for realizing a charging function, D+ and D- for realizing a data transmission function, and a handshake signal lamp for realizing data or power control. The number of the conductive spring 720 and the conductive slip ring 710 can be set as needed, and is not limited to one or more. For example, the transmission assembly 700 can include five conductive slip rings 710 and five conductive springs 720 as shown in Figure 5 and Figure 7 .

[0064] One of the conductive slip rings 710 and the conductive spring 720 is fixed to the rotating member 300, and the other is fixed to the housing 200. The first trigger member 410 as a spring is arranged on the same surface as the plurality of conductive springs 720. The first trigger member 410 can be arranged side by side with the plurality of conductive springs 720. The transmission assembly 700 can further include a protection grid 730, which can be formed with a plurality of parallel grids 731, and the plurality of conductive springs 720 and the first trigger member 410 can be arranged in one grid 731, respectively, to avoid short circuit. Alternatively, a plurality of first trigger members 410 or a plurality of conductive springs 720 can be arranged in each grid 731, and the plurality of members arranged in the same grid 731 can be used as one at this time. The second trigger member 420 as an arc-shaped piece is arranged on the same surface as the plurality of conductive slip rings 710. The curvature of the arc-shaped piece is the same as the curvature of the conductive slip ring 710.

[0065] The embodiments of the present application can transmit signals through the transmission assembly 700 to meet the needs of various functions realized by the retractable cord device 10 using the cable 100, and use the cooperation of the detection circuit 411 and the trigger assembly 400 to realize the judgment of the pulling state of the cable 100 to assist the control of the functions of the retractable cord device 10.

[0066] Please refer to Figure 8 and Figure 9 , Figure 8 is a perspective structural schematic diagram of part of a retractable cord device provided by another embodiment of the present application, Figure 9 is Figure 8 a perspective structural schematic diagram of another part of a retractable cord device in the embodiment.

[0067] In some embodiments, the first trigger member 410 can be an arc-shaped piece as shown in Figure 8 , and the second trigger member 420 can be a conductive slip ring as shown in Figure 9The elastic piece and the arc piece can be configured as described above. In other words, one of the first trigger 410 and the second trigger 420 of the trigger assembly 400 can be an elastic piece, and the other can be an arc piece, wherein the elastic piece can be disposed on the same surface as the conductive elastic piece 720, and the arc piece can be disposed on the same surface as the conductive sliding ring 710. The arc of the arc piece can be the same as the arc of the conductive sliding ring 710.

[0068] When the first trigger 410 is an arc piece, the first trigger 410 can be disposed on the side of the first circuit board 610 facing away from the rotating member 300. A plurality of conductive sliding rings 710 can also be disposed on the side of the first circuit board 610. When the second trigger 420 is an elastic piece, the second trigger 420 can be disposed on the surface of the second circuit board 620. A plurality of conductive elastic pieces 720 can also be disposed on the surface of the second circuit board 620. The specific structures of the conductive sliding rings 710 and the conductive elastic pieces 720 can be as described above.

[0069] Please refer to Figure 10 and Figure 11 , Figure 10 is an equivalent circuit schematic diagram of the trigger assembly and the detection circuit in a first state according to some embodiments of the present application, Figure 11 is Figure 10 an equivalent circuit schematic diagram of the trigger assembly and the detection circuit in a second state according to some embodiments of the present application.

[0070] The trigger assembly 400 of the telescopic cable device 10 can be regarded as a switch in a circuit. When the first trigger 410 and the second trigger 420 are in contact and conductive, the switch is closed to form a path. When the first trigger 410 and the second trigger 420 are separated, the switch is opened to form an open circuit. The detection circuit 411 is electrically connected to the trigger assembly 400, and can detect the on-off state of the switch. The electrical signal detected by the detection circuit 411 can be, for example, a level signal.

[0071] Please refer to Figure 12 , Figure 12 is a waveform schematic diagram of the electrical signal detected by the detection circuit according to some embodiments of the present application.

[0072] Figure 12 The electrical signal can be a level signal. When the pulling state of the cable 100 changes, the electrical signal detected by the detection circuit 411 can change. For example, when the first trigger 410 and the second trigger 420 are in contact and conductive, the detection circuit 411 can detect a high-level signal. When the first trigger 410 and the second trigger 420 are separated, the detection circuit 411 can detect a low-level signal.

[0073] In some application scenarios, the detection circuit 411 detects a low-level signal when the cable 100 is in a fully retracted state, so that the detection circuit 411 can detect a high-level signal when the cable 100 is pulled out to the first trigger 410 and the second trigger 420 are in contact and conductive, thereby determining the change in the pulling state of the cable 100. The telescopic cable device 10 can also determine the pulling state of the cable 100, such as the pulling speed of the cable 100, the length of time at rest, and the like, based on the duration of each high-level signal, the duration of each low-level signal, and the like.

[0074] Referring to Figure 13 , Figure 13 is a partial perspective view of a telescopic cable device provided by some embodiments of the present application.

[0075] In some embodiments, the trigger assembly 400 can include a first trigger 410 and a plurality of second triggers 420. The first trigger 410 can be in contact and conductive with the second triggers 420 at a plurality of preset positions, and each preset position corresponds to a second trigger 420. In other embodiments, the trigger assembly 400 can include a plurality of first triggers 410 and a second trigger 420. The plurality of first triggers 410 can be in contact and conductive with the second trigger 420 at preset positions, respectively. Thus, during one rotation of the rotating member 300, the trigger assembly 400 can form a plurality of on-off state changes, so as to facilitate the telescopic cable device 10 to more accurately determine the pulling state of the cable 100.

[0076] Alternatively, the trigger assembly 400 includes a first trigger 410 and a plurality of second triggers 420, and the plurality of second triggers 420 trigger different electrical signals when in contact with the first trigger 410; or the trigger assembly 400 includes a plurality of first triggers 410 and a second trigger 420, and the plurality of first triggers 410 trigger different electrical signals when in contact with the second trigger 420. Taking the case where the number of second triggers 420 is a plurality as an example, the plurality of second triggers 420 correspond to different circuits. The plurality of second triggers 420 can be a plurality of arc-shaped pieces located on the same circumferential line. When different second triggers 420 are in contact and conductive with the same first trigger 410, the detection circuit 411 can detect different electrical signals, so as to facilitate the telescopic cable device 10 to determine the movement direction of the cable 100.

[0077] Referring to Figure 14 and Figure 15 , Figure 14 is an equivalent circuit schematic diagram of the trigger assembly and the detection circuit in the third state provided by some embodiments of the present application, Figure 15 is Figure 14 an equivalent circuit schematic diagram of the trigger assembly and the detection circuit in the fourth state in the embodiments.

[0078] When one of the first trigger 410 and the second trigger 420 is multiple and the other is one, the trigger assembly 400 can be regarded as a multi-throw switch in a circuit. Taking the case that the second trigger 420 is multiple, Figure 14 As shown, the multiple second triggers 420 are all separated from the first trigger 410, at this time the multi-throw switch is opened to form an open circuit; Figure 15 As shown, the second second trigger 420 is in contact with the first trigger 410 to form a closed circuit. It can be understood that the multi-throw switch can form multiple circuits corresponding to the state that the multiple second triggers 420 are in contact with the first trigger 410 respectively.

[0079] Please refer to Figure 16 and Figure 17 , Figure 16 is a waveform diagram of an electrical signal measured by the detection circuit when the cable is pulled out according to some embodiments of the present application, Figure 17 is Figure 16 a waveform diagram of an electrical signal measured by the detection circuit when the cable is retracted according to some embodiments of the present application.

[0080] Figure 16 , Figure 17 The electrical signal shown can be a level signal. When the pulling state of the cable 100 changes, the electrical signal measured by the detection circuit 411 can change, for example, when the first trigger 410 is in contact with the second trigger 420 to form a closed circuit, the detection circuit 411 can detect a high level signal, and when the first trigger 410 is separated from the second trigger 420, the detection circuit 411 can detect a low level signal.

[0081] Taking the case that the second trigger 420 is multiple, and the level signals triggered when each second trigger 420 is in contact with the first trigger 410 to form a closed circuit are different, during the rotation of the rotating member 300, the multiple second triggers 420 are in contact with the first trigger 410 to form a closed circuit respectively, and multiple different high level signals can be triggered, which can facilitate the telescopic wire device 10 to calculate the number of rotations of the rotating member 300. During the forward rotation and reverse rotation of the rotating member 300, the triggering rules of different high level signals are opposite, thus the telescopic wire device 10 can obtain the rotation direction of the rotating member 300 according to the level signal measured by the detection circuit 411, and further confirm the movement direction of the cable 100.

[0082] In some embodiments, the trigger assembly 400 includes a first trigger member 410 and multiple second trigger members 420. As the rotating member 300 rotates one revolution, the multiple second trigger members 420 contact the first trigger member 410, triggering electrical signals whose values ​​increase or decrease sequentially. The rotation direction of the rotating member 300 is related to the direction of movement of the cable 100. For example, the rotating member 300 rotates forward when the cable 100 is being pulled, and rotates backward when the cable 100 is being retracted.

[0083] Optionally, when the rotating member 300 rotates in the forward direction for one circle, the values ​​of the electrical signals triggered when the second triggering members 420 come into contact with the first triggering member 410 increase in sequence, for example Figure 16 As shown, within one cycle, the level signal values ​​triggered when the plurality of second trigger members 420 come into contact with the first trigger member 410 increase in sequence, so that the plurality of high-level signals appear in a trend from small to large within one cycle. When the rotating member 300 rotates in the opposite direction for one circle, the values ​​of the electrical signals triggered when the plurality of second trigger members 420 come into contact with the first trigger member 410 decrease in sequence, for example Figure 17 As shown, in one cycle, the level signal values ​​triggered when the second triggering elements 420 contact the first triggering element 410 decrease in sequence, so that the multiple high-level signals appear in a trend from large to small in one cycle.

[0084] It is understood that the electrical signal triggering conditions of the embodiments of the present application are not limited to the above examples. For example, when the rotating member 300 rotates in the forward direction, the value of the electrical signal triggered when the multiple second triggering members 420 contact the first triggering member 410 can decrease in sequence; when the rotating member 300 rotates in the reverse direction, the value of the electrical signal triggered when the multiple second triggering members 420 contact the first triggering member 410 can increase in sequence.

[0085] In other embodiments, the trigger assembly 400 includes multiple first trigger members 410 and one second trigger member 420. During one rotation of the rotating member 300, the multiple first trigger members 410, when in contact with the second trigger member 420, trigger the electrical signals to increase or decrease in value. The details are similar to those in the above embodiment and are not further described here.

[0086] It should be noted that Figure 16 、 Figure 17 The figure shows the change of the electrical signal in two cycles. One rotation of the rotating member 300 is considered as one cycle. The starting point of each cycle can be set as needed and is not limited to Figure 16 、 Figure 17For example, one of the first trigger member 410 and the second trigger member 420 can be located near or at the end of the other, so that the on / off state of the trigger assembly 400 can change when the rotating member 300 rotates, so that the detection circuit 411 can detect the change in the electrical signal at the beginning of a cycle.

[0087] In other embodiments, the multiple electrical signals triggered by the trigger assembly 400 due to multiple contact and conduction between the first trigger member 410 and the second trigger member 420 within a cycle may also exhibit other changing trends, such as the electrical signal values ​​first increasing and then decreasing within a cycle, rather than being limited to a gradually increasing or decreasing trend. The specific trend can be set as needed. It is understood that the electrical signals detected by the detection circuit 411 are not limited to the aforementioned level signals and may, for example, be other pulse signals.

[0088] See also Figure 18 , Figure 18 It is a partial three-dimensional structural schematic diagram of the retractable wire device provided in some embodiments of the present application.

[0089] In some embodiments, the sizes of the plurality of first trigger members 410 or the plurality of second trigger members 420 are different in the rotation direction of the rotating member 300. For example, the plurality of second trigger members 420 are arc-shaped pieces. Figure 18 As shown, the lengths of the plurality of second trigger members 420 along the circumferences on which they are located may be different.

[0090] It is understood that the arrangement direction of the plurality of second trigger members 420 corresponds to the rotation direction of the rotating member 300. The different sizes of the plurality of second trigger members 420 in this direction can increase the contact area between the plurality of second trigger members 420 and the first trigger member 410. Therefore, when the rotating member 300 rotates at a constant speed, the longer second trigger member 420 maintains contact with the first trigger member 410 for a longer period of time, thereby increasing the time it takes to trigger the corresponding electrical signal.

[0091] The retractable cable device 10 can obtain more information for judging the pulling state of the cable 100 according to the contact and conduction between the multiple second trigger members 420 of different sizes and the first trigger member 410, which is conducive to more accurately judging the pulling state of the cable 100, such as the length of the pulled-out portion of the cable 100, the movement speed of the cable 100, the movement direction of the cable 100, etc. In other embodiments, the sizes of the multiple second trigger members 420 can also be designed as follows: Figure 13 Same dimensions as shown.

[0092] To sum up, the embodiment of the present application can simplify the corresponding circuit structure by setting the trigger component 400 to have only one first trigger part 410 and the second trigger part 420, which is beneficial to reducing the preparation cost and is suitable for the telescopic cord device 10 with low requirements for detecting the pulling state of the cable 100; the embodiment of the present application can also provide the trigger component 400 with a structure in which one of the first trigger part 410 and the second trigger part 420 is multiple and the other is one, so that it can provide more detailed information during the process of the pulling state of the cable 100 changing, which is beneficial to improving the detection accuracy of the telescopic cord device 10 on the pulling state of the cable 100, and is suitable for the telescopic cord device 10 with high requirements for detecting the pulling state of the cable 100.

[0093] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0094] The above description is only part of the implementation methods of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A telescopic wire device, characterized in that: The telescopic wire device comprises: case; a rotating member rotatably disposed in the housing; a cable, the cable comprising a winding portion and a drawing portion, the winding portion being wound on the rotating member, and the drawing portion extending from the winding portion to the outside of the housing; a trigger assembly, the trigger assembly comprising a first trigger member and a second trigger member, the first trigger member being fixed to the rotating member, the second trigger member being fixed to the housing, the trigger assembly being configured such that when the first trigger member is driven by the rotating member to a preset position, the first trigger member contacts and conducts with the second trigger member; and A detection circuit is electrically connected to the trigger component and is used to detect the on and off states of the first trigger component and the second trigger component.

2. The retractable wire device according to claim 1, characterized in that: The trigger assembly includes one first trigger member and a plurality of second trigger members, and the plurality of second trigger members trigger different electrical signals when in contact with the first trigger member; or The trigger assembly includes a plurality of first trigger members and one second trigger member, and the plurality of first trigger members trigger different electrical signals when in contact with the second trigger member.

3. The retractable wire device according to claim 2, characterized in that: During one rotation of the rotating member, the values ​​of the electrical signals triggered when the first trigger members come into contact with the second trigger members increase or decrease in sequence; or During one rotation of the rotating member, the values ​​of the electrical signals triggered when the second triggering members come into contact with the first triggering member increase or decrease in sequence.

4. The retractable wire device according to claim 2, characterized in that: In the rotation direction of the rotating member, the sizes of the plurality of first triggering members or the plurality of second triggering members are different.

5. The retractable wire device according to claim 1, characterized in that: The retractable wire device includes a first circuit board, the first circuit board is electrically connected to the cable, the detection circuit is arranged on the first circuit board, and the first trigger member or the second trigger member is arranged on the first circuit board.

6. The retractable wire device according to claim 5, characterized in that: The retractable wire device further includes a transmission component, the transmission component is electrically connected to the cable through the first circuit board, the transmission component includes a conductive slip ring and a conductive spring, the conductive spring is in contact with the conductive slip ring; Among them, one of the conductive slip ring and the conductive spring sheet is fixed to the rotating member, and the other is fixed to the housing; one of the first trigger member and the second trigger member is a spring sheet, and the other is an arc-shaped sheet; the spring sheet and the conductive spring sheet are arranged on the same surface; the arc-shaped sheet and the conductive slip ring are arranged on the same surface, and the curvature of the arc-shaped sheet is the same as that of the conductive slip ring.

7. The retractable wire device according to claim 5, characterized in that: The retractable wire device also includes a second circuit board, the first circuit board and the second circuit board are arranged opposite to each other, the first circuit board is fixed to the rotating member, the first trigger member is arranged on the first circuit board, the second circuit board is fixed to the shell, and the second trigger member is arranged on the second circuit board.

8. The retractable wire device according to claim 7, characterized in that: The rotating member includes a limiting plate and a winding post, the winding post is protruding from the limiting plate, the winding portion is wound on the winding post, one of the first circuit board and the second circuit board is fixed to an end of the winding post away from the limiting plate, and covers the opposite sides of the winding portion together with the limiting plate, and the other of the first circuit board and the second circuit board is fixed to the shell.

9. The retractable wire device according to claim 7, characterized in that: The retractable wire device includes a functional circuit, which is arranged on the first circuit board or the second circuit board and is electrically connected to the cable and the detection circuit respectively, and is used to control a preset function according to the on-off status of the first trigger member and the second trigger member.

10. The retractable wire device according to any one of claims 1 to 9, characterized in that: The retractable wire device includes a rotating shaft and a coil spring. The rotating shaft is inserted into the rotating member and fixed to the shell. The rotating member is rotatably connected to the shell through the rotating shaft. The coil spring is arranged in the shell, and one end is connected to the rotating member and the other end is connected to the rotating shaft. It is used to provide the rotating member with a reverse rotation force when the winding part is pulled out of the shell.

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