A method for setting up a cable reel and the cable reel itself.

Abstract

This invention provides a cable reel setting method and a cable reel. The cable reel includes a wheel core and a gear component that rotates coaxially with the wheel core. A data cable is wound around the wheel core and extends out of the cable reel. The setting method includes: obtaining the maximum change value of the extension length of the data cable during switching between any two adjacent gear positions; determining the length change value of the data cable adjusted by the wheel core in one revolution; and determining the number of teeth arranged circumferentially on the gear component based on the maximum change value and the length change value.

Description

Technical Field

[0001] This invention relates to the field of retractable data cables, and more specifically, to a method for setting up a retractable data cable winder and the winder itself. Background Technology

[0002] With the development of technology, retractable data cables have gradually become an indispensable necessity in people's daily lives. Due to different usage scenarios, people have different requirements for the length of data cables. However, the existing cable reel settings have limited settings, with only 3 or 4 settings. The data cable extension length between each setting is large, and the data cable can only extend to a specific length according to the set setting, such as 35cm, 60cm, 80cm, etc. Summary of the Invention

[0003] In view of this, the present invention provides a cable reel setting method and a cable reel to solve the technical problem of the adjustment range corresponding to the extension length of the retractable data cable meeting various user needs.

[0004] The technical solution of this invention is implemented as follows:

[0005] This invention provides a method for setting a cable reel, the cable reel including a wheel core and a gear component that rotates coaxially with the wheel core, a data cable being wound around the wheel core and extending out from the cable reel; characterized in that the setting method includes: obtaining the maximum change value of the extension length of the data cable during switching between any two adjacent gear positions; determining the length change value of the data cable corresponding to one rotation of the wheel core; and determining the number of teeth of the gear component arranged circumferentially based on the maximum change value and the length change value.

[0006] In some embodiments, the step of "determining the number of teeth of the gear component arranged circumferentially according to the maximum change value and the length change value" includes: determining the tooth parameter by dividing the length change value by the maximum change value; if the tooth parameter is a positive integer, then using the tooth parameter as the number of teeth; if the tooth parameter is not a positive integer, then determining the number of teeth by rounding the tooth parameter using a preset rounding method.

[0007] In some embodiments, the data cable extends from both ends of the cable reel, and the step of "determining the length change value of the data cable corresponding to one revolution of the reel" includes: determining the sum of the lengths of the two outermost turns of the data cable wound on the reel from the outside to the inside; and determining the sum of the lengths of the two outermost turns as the length change value.

[0008] In some embodiments, "determining the sum of the lengths of the two outermost turns of the data cable wound around the wheel core" includes: determining the diameter of the wheel core around which the data cable is wound; determining the thickness of the data cable; determining the number of turns of the data cable wound around the wheel core; calculating the diameters of the first and second turns of the data cable wound around the wheel core from the outside in, based on the diameter of the wheel core, the thickness of the data cable, and the number of turns; determining the lengths of the first and second turns based on the diameters of the first and second turns, and adding the lengths of the first and second turns together to obtain the sum of the lengths of the two outermost turns.

[0009] In some embodiments, the data cable extends from one end of the reel, and the step of "determining the length change value of the data cable corresponding to one revolution of the reel" includes: determining the length of the outermost turn of the data cable wound on the reel; and determining the length of the outermost turn as the length change value.

[0010] In some embodiments, "determining the length of the outermost loop of the data cable wound around the wheel core" includes: determining the diameter of the wheel core around which the data cable is wound; determining the thickness of the data cable; determining the number of loops of the data cable wound around the wheel core; calculating the diameter of the outermost loop of the data cable wound around the wheel core based on the diameter of the wheel core, the thickness of the data cable, and the number of loops; and determining the length of the outermost loop based on the diameter of the outermost loop.

[0011] The present invention also provides a cable reel employing the above-described cable reel setting method, the cable reel further comprising: a housing having an internal receiving cavity, and the housing having an opening for the data cable to pass through, the opening communicating with the receiving cavity; a snap-fit ​​member connected to the housing, the snap-fit ​​member having a first protrusion that engages with the gear member, the first protrusion swinging as the gear member rotates. The wheel core is disposed within the receiving cavity for winding the data cable, and the wheel core can rotate with the extension and retraction of the data cable; the first protrusion of the snap-fit ​​member and the teeth of the gear member can collide with each other to produce a beeping sound.

[0012] In some embodiments, the reel further includes a limiting member disposed on the side of the latching member away from the gear member to limit the angle at which the latching member rotates with the gear member.

[0013] In some embodiments, the reel further includes a positioning element for fixing a gear position. The positioning element includes: a chassis rotatably connected to the housing; and second protrusions protruding from the chassis toward the latching member, wherein multiple second protrusions are spaced apart circumferentially along the edge of the chassis. The latching member has positioning blocks and actuating blocks protruding at intervals, at least a portion of the positioning element being located between the positioning blocks and the actuating blocks. The positioning blocks are used to abut against two adjacent second protrusions to fix the gear position, and the actuating blocks are used to rotate the positioning element.

[0014] In some embodiments, a recess is formed between adjacent second protrusions, the recess including a first recess and a second recess spaced apart; wherein the depth of the first recess is less than the depth of the second recess, so that when the positioning block extends into the first recess, the swing angle of the first protrusion is less than the angle corresponding to each tooth of the gear; and when the positioning block extends into the second recess, the swing angle of the first protrusion is greater than the angle corresponding to each tooth of the gear.

[0015] In some embodiments, the actuating block is a triangular block, which, when the triangular block abuts against the second protrusion, rotates the positioning member until the triangular block abuts against the adjacent second protrusion to adjust the gear position.

[0016] This invention provides a cable reel setting method and a cable reel. The cable reel includes a wheel core and a gear component that rotates coaxially with the wheel core. A data cable is wound around the wheel core and extends out of the cable reel. The setting method includes: obtaining the maximum change value of the extension length of the data cable during switching between any two adjacent gear positions; determining the length change value of the data cable corresponding to one rotation of the wheel core; and determining the number of teeth arranged circumferentially on the gear component based on the maximum change value and the length change value. The cable reel setting method in this embodiment of the invention determines the number of teeth on the gear component by adjusting the length of the data cable after one rotation of the reel. When the data cable extends from opposite ends of the reel, the reel rotates half a turn, and one loop of the data cable around the reel extends. When the reel rotates one full turn, the data cable can extend up to the length of the outermost two layers of data cable. When the data cable extends from one end of the reel, the reel rotates one full turn, and one loop of the data cable around the reel extends. Therefore, by determining the number of teeth on the gear component based on the length of the data cable adjusted after one rotation of the reel, the reel can rotate through multiple teeth in one full rotation. Each tooth rotation corresponds to one adjustment level, thus enabling multiple levels of adjustment of the data cable extension length with each full rotation of the reel. Furthermore, the change in data cable length between adjacent levels is small, thus achieving approximately stepless adjustment of the data cable extension length, thereby meeting various user needs regarding the data cable extension length. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall steps of the cable reel setting method in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram illustrating the steps of the cable reel setting method when the data cable extends from both ends of the reel in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram illustrating the steps of the cable reel setting method when the data cable extends from one end of the reel in an embodiment of the present invention;

[0020] Figure 4 This is a schematic longitudinal cross-sectional view of the cable reel in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the cable reel with the data cable extending from both ends in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the data cable winding wheel core in an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the adjustment component in an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram showing the first recessed portion abutting against the positioning block in an embodiment of the present invention;

[0025] Figure 9 This is a schematic diagram showing the second recess abutting against the positioning block in an embodiment of the present invention;

[0026] Figure 10 This is a schematic diagram of the positioning component structure in an embodiment of the present invention;

[0027] Figure 11 This is a cross-sectional schematic diagram of the positioning component in an embodiment of the present invention;

[0028] Figure 12 This is a schematic diagram of the contact between the actuating block and the positioning element in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Cable reel; 2. Data cable; 11. Housing; 12. Receiving cavity; 13. Opening; 14. Wheel core; 15. Adjustment component; 141. Columnar part; 142. First end; 143. Second end; 151. Gear component; 152. Snap-fit ​​component; 153. Positioning component; 154. Limiting component; 1511. Gear tooth; 1512. Groove; 1521. First protrusion; 1522. Connecting part; 1523. Wheel disc; 1524. Positioning block; 1525. Actuating block; 1531. Chassis; 1532. Second protrusion; 1534. First recess; 1535. Second recess; Z, axis of symmetry; D1, depth of the first recess; D2, depth of the second recess; D, wheel core diameter; d, data cable diameter. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0032] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this invention will not be described separately.

[0033] In the following description, the terms "first," "second," and "..." are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the orientation under normal use conditions, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use conditions.

[0034] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0035] The retractable data cable comes with a spring inside its box. When stretched to a certain length, the spring tightens, and once use is complete, it automatically returns to its original shape, causing the data cable to retract and coil up. However, due to varying usage scenarios and different user needs for different cable lengths, the current technology struggles to accommodate adjustable cable lengths for a wider range of lengths, thus failing to meet the diverse needs of users.

[0036] like Figure 1-3 As shown, the present invention provides a method for setting a cable reel, such as... Figure 4 As shown, the reel 1 includes a reel core 14 and a gear component 151, wherein the gear component 151 rotates coaxially with the reel core 14, as shown in the figure. Figure 5 As shown, the data cable 2 is wound around the reel core 14 and extends from both ends of the cable reel 1 (bidirectional tension cable reel). It can be understood that the data cable can also extend from one end of the cable reel (unidirectional tension cable reel). The data cable 2 is wound around the reel core 14 and can be pulled out of the cable reel 1. When the data cable 2 is pulled out, it causes the reel core 14 to rotate forward. Since the gear component 151 is fixedly connected to the reel core 14, when the reel core 14 rotates, the gear component 151 also rotates coaxially with the reel core 14. The gear component 151 can control the gear adjustment of the cable reel 1. Each time the gear component 151 rotates one tooth, the cable reel 1 adjusts its gear accordingly.

[0037] like Figure 1 As shown, the cable reel setting method includes:

[0038] S100: Obtain the maximum change value Pmax of the extension length of the data cable during the switching between any two adjacent gear positions;

[0039] The data cable is wound around the hub 14 as follows Figure 6 As shown, the data cable is wound around the hub 14 from the inside out. With each increase in the number of turns, the diameter of the data cable wound around the hub gradually increases, and the circumference of each turn of the data cable also gradually increases. Since the number of adjustable positions for each rotation of the hub 14 is fixed, when the data cable is stretched, the data cable with the largest outer circumference is pulled out. Each adjustment corresponds to the maximum extension length of the data cable, i.e., the maximum change value Pmax of the data cable extension length adjustable for one position. The maximum change value Pmax can be set according to user needs.

[0040] S200, Determine the length change value L of the data line corresponding to one revolution of the wheel core.

[0041] Among them, such as Figure 2 As shown, when the data cable 2 extends from both ends of the cable reel 1, step S200 includes:

[0042] S201. Determine the length of the outermost two turns of the data line wound on the wheel core from the outside in, and (L1+L2); L1 is the length of the data line in the outermost turn, and L2 is the length of the second turn of the data line from the outside in.

[0043] S202, The length of the two outermost rings and (L1+L2) are determined as the length change value L.

[0044] It is understandable that when the data cable extends from opposite ends of the cable reel, both ends of the reel housing have openings, and the two ends of the data cable extend out of the housing through these openings. During the user's pulling of the data cable, due to the rotation of the reel, both ends of the data cable are simultaneously pulled outwards through the openings, as... Figure 6 As shown, when the wheel core 14 rotates half a turn, the length of wire wound around the wheel core for one turn is pulled out. The wheel core 14 continues to rotate half a turn, and the length of wire wound around the wheel core for another turn is pulled out. That is, when the wheel core 14 rotates for the first turn, the wire pulled out is the first turn L1 and the second turn L2 (counting from the outside to the inside) of the wire wound on the outermost side of the wheel core.

[0045] like Figure 3 As shown, when the data cable extends from one end of the cable reel, step S200, which involves determining the change in the length of the data cable corresponding to one revolution of the reel, includes:

[0046] S203. Determine the length L1 of the outermost loop of the data cable wound on the wheel core;

[0047] S204. The length L1 of the outermost ring is determined as the length change value L.

[0048] It is understandable that when the data cable extends from one end of the cable reel, one end of the reel housing has an opening, through which one end of the data cable extends out of the housing. During the user's pulling of the data cable, due to the rotation of the reel, one end of the data cable is pulled outward through the opening. One full rotation of the reel 14 pulls out the length of cable wound around the reel one turn. That is, when the reel 14 rotates for the first turn, the cable pulled out is the first turn L1 of cable wound on the outermost side of the reel.

[0049] S300. Determine the number N of teeth arranged circumferentially on the gear component based on the maximum change value Pmax and the length change value L.

[0050] It can be understood that when gear 151 rotates one revolution with wheel core 14, the number of adjustable gears of the cable reel is the number of teeth N on the corresponding gear 151. Therefore, the number of adjustable gears for one revolution of wheel core 14 can be determined by dividing the length change value L by the maximum change value Pmax. When the data cable extends from opposite ends of the cable reel, L = (L1 + L2), N = (L1 + L2) / Pmax; when the data cable extends from one end of the cable reel, L = L1, N = L1 / Pmax. If the value of N is a positive integer, then N is used as the number of teeth; if N is not a positive integer, then the value of N is rounded using a preset rounding method to determine the number of teeth. It can be understood that the rounding method includes rounding with carry, rounding with borrow, discarding decimals and then adding or subtracting a specific value to determine the number of teeth… The specific value can be 1 or 2, as an error redundancy. For example, if the maximum change value Pmax required by the user is 4cm and the length change value L is 40cm, and the value of N is 10, then the number of gear teeth needs to be set to 10.

[0051] The cable reel setting method in this embodiment of the invention uses the length of the outermost two turns of data cable around the reel core to determine the number of teeth on the gear component. Since the data cable extends from both ends of the cable reel, when the cable reel rotates half a turn, one turn of the data cable around the reel can extend. When the cable reel rotates one full turn, the data cable can extend up to the length of the outermost two layers of data cable. Therefore, by determining the number of teeth on the gear component based on the length of the outermost two layers of data cable, the cable reel can rotate through multiple teeth in one full turn. Each tooth rotation corresponds to an adjustment level, thereby enabling multiple levels of adjustment of the data cable extension length in one full turn of the cable reel. Furthermore, the change in data cable length between adjacent levels is small, thus approximately achieving stepless adjustment of the data cable extension length, thereby meeting the user's various usage needs for the data cable extension length.

[0052] In some embodiments, determining the number N of teeth N arranged circumferentially along the gear component 151 based on the maximum change value Pmax and the length change value L includes: determining that the number of teeth N is greater than or equal to 10.

[0053] It is understandable that the data cable is wound multiple times around the reel 14 from the inside out. With the total length of the data cable remaining constant, the more adjustable settings the reel has, the smaller the adjustable length of each setting becomes. For example, when the number of teeth N is 20 and the length L is 40cm, the maximum change in the data cable extension length Pmax during the switching between any two adjacent settings is 2cm. Furthermore, as the data cable is pulled out from both ends, the closer the pulled-out data cable is to the inner circle, the smaller the adjustable change value of a single setting becomes, and the more data cable lengths can be selected, thus approximately achieving stepless adjustment of the data cable extension length.

[0054] The cable reel setting method in this embodiment of the invention limits the number of teeth on the gear component, so that the cable reel can adjust a sufficient number of gears, further reducing the length of the data cable that can be adjusted by one gear, making the gear adjustment of the cable reel closer to stepless adjustment, and further optimizing the accuracy of the gear setting.

[0055] In some embodiments, determining the length L of the data cable adjustment for one revolution of the wheel core includes: determining the diameter D of the wheel core around which the data cable is wound; determining the thickness d of the data cable; determining the number of turns of the data cable around the wheel core; and determining the length of the data cable adjustment for one revolution of the wheel core based on the diameter D of the wheel core, the thickness d of the data cable, and the number of turns.

[0056] Understandable, such as Figure 6 As shown, during the process of data cable 2 being wound around the reel 14 from the inside out, the length of the data cable increases with each turn from the inside out. If the diameter D of the reel 14 is known, the winding diameter of the second turn of the data cable from the inside out on the reel 14 is (D+2d), the winding diameter of the third turn of the data cable from the inside out is (D+2d+2d)... and so on. Based on the number of turns the data cable is wound around the reel 14, the winding diameters of the outermost two turns of the data cable can be obtained, thereby determining the length L1 of the outermost turn and the length L2 of the second turn of the data cable from the outside in. When the data cable extends from one end of the reel, the length of the data cable adjusted by one rotation of the reel is L1; when the data cable extends from opposite ends of the reel, the length of the data cable adjusted by one rotation of the reel is (L1+L2).

[0057] This invention allows for the calculation of the length of the data cable wound around the reel core and the data cable using parameters of the reel core. This eliminates the need to pull the data cable out for measurement, saving time and avoiding measurement errors. It also facilitates accurate setting of the reel's settings and ensures production efficiency.

[0058] In some embodiments, such as Figure 6 As shown, the data cable 2 wraps around the wheel core 14 8 times, and the length L of the data cable adjusted by rotating the wheel core once is less than 40cm.

[0059] It is understandable that the more turns the data cable is wound, the longer the data cable on the outer layer will be. Therefore, the length L of the data cable adjusted by one rotation of the reel is affected. If the value of L is too large, the reel's adjustment range will be difficult to achieve near-stepless adjustment during the gear adjustment process. Therefore, to ensure that the set gear can achieve near-stepless adjustment, the length L of the data cable adjusted by one rotation of the reel needs to be further limited, ensuring that the number of turns of the data cable 2 on the reel 14 is 8 and L < 40cm.

[0060] This invention controls the length of the outermost two turns by limiting the number of turns the data cable makes wound around the reel core, making the reel's gear adjustment function closer to stepless adjustment.

[0061] In some embodiments, determining the maximum change value Pmax of the extension length of the data cable during switching between any two adjacent gear positions includes: determining that the maximum change value Pmax is less than 4cm.

[0062] It's understandable that the more adjustable settings a cable reel has, the smaller the adjustable length of each setting, thus achieving near-infinite adjustment. As the above analysis shows, during the data cable stretching process, the closer the pulled-out data cable is to the inner ring of the reel, the smaller the adjustable length of each setting. Therefore, by limiting the maximum change value Pmax to a sufficiently small value, the subsequent adjustable lengths of the pulled-out data cable will be even smaller, thus meeting the requirement for infinitely adjustable settings on the cable reel.

[0063] This invention, by limiting the maximum change in the extension length of the data cable during switching between any two adjacent gears, further restricts the length of the gear adjustment to be sufficiently small, making the adjustable length of the data cable of the cable reel more precise and closer to stepless adjustment, thus further optimizing the product's performance.

[0064] In some embodiments, such as Figure 7 As shown, the cable reel setting method also includes: for each tooth that the gear 151 rotates through, the cable reel is adjusted to a corresponding gear position, where A = 360 / N.

[0065] It is understandable that gear 151 controls gear adjustment during rotation. One tooth of gear 151 corresponds to one gear. Each time gear 151 rotates through one tooth, the cable reel will perform a gear shift. That is to say, gear shift is completed when gear 151 rotates through an angle A corresponding to one tooth. If gear 151 has N teeth 1511 arranged circumferentially, then A = 360 / N.

[0066] In this embodiment of the invention, by limiting the rotation angle of the gear component when adjusting one gear position, multiple gear positions can be switched within one rotation of the gear component, increasing the number of adjustable gear positions of the cable reel, providing users with more selectable data cable lengths, and optimizing product performance.

[0067] The present invention also provides a cable reel employing the above-described cable reel setting method, such as... Figure 4 As shown, the cable reel 1 also includes: a housing 11 and a snap-fit ​​member 152; wherein, the housing 11 has a receiving cavity 12 inside, and the housing 11 has an opening 13 for the data cable to pass through (see...). Figure 5The opening 13 communicates with the receiving cavity 12; the snap-fit ​​member 152 is connected to the housing 11, such as... Figure 7 As shown, the snap-fit ​​component 152 has a first protrusion 1521 that snaps into the gear component 151. The first protrusion 1521 swings as the gear component 151 rotates. The data cable 2 is wound around the wheel core 14 and is disposed together with the wheel core 14 within the receiving cavity 12. Both ends of the data cable extend out of the housing 11 through openings 13. The wheel core 14 can rotate as the data cable 2 extends or retracts. The first protrusion 1521 of the snap-fit ​​component 152 and the gear teeth 1511 of the gear component 151 can collide with each other to produce a beeping sound.

[0068] Among them, such as Figure 4 and Figure 7 As shown, the latching component 152 further includes a connecting portion 1522 and a wheel 1523. The connecting portion 1522 is disposed on the edge of the wheel 1523. The latching component 152 is connected to the housing 11 through the connecting portion 1522. The wheel 1523 has a first protrusion 1521 that extends into the groove 1512 between the gear teeth 1511. The first protrusion 1521 engages with different grooves 1512 as the gear component 151 rotates to adjust the rotation angle. It can be understood that the first protrusion 1521 on the latching component 152 cooperates with the groove 1512 on the gear component 151. Each time the first protrusion 1521 changes to a different groove 1512, a gear shift is performed. The gear component 151 rotates by a corresponding angle with the wheel core 14, and the length of the data cable 2 also extends or retracts by one gear. At the same time, when shifting gears, the first protrusion 1521 on the latching component 152 and the gear teeth on the gear component 151 can collide with each other and produce a sound. It is understood that the number of the first protrusion 1521 is not limited, as long as it can mesh with the gear teeth to achieve gear adjustment, and ensure smooth rotation during meshing to avoid meshing failure. Optionally, the number of the first protrusion 1521 can be set to one or two.

[0069] The cable reel in this embodiment of the invention is achieved by a snap-fit ​​groove for rotating a gear component. Each tooth on the gear component corresponds to a gear position, and there are multiple adjustable gear positions. Users can adjust to more different lengths according to their own needs. Furthermore, a prompt sound is emitted when switching gear positions to remind the user that a gear position switch has been completed, which can improve the user experience.

[0070] In some embodiments, such as Figure 7 As shown, the reel 1 also includes a limiting member 154; the limiting member 154 is disposed on the side of the snap-fit ​​member 152 away from the gear member 151, so as to limit the angle of rotation of the snap-fit ​​member 152 with the gear member 151.

[0071] Understandable, such as Figure 8 and Figure 9 As shown, during the rotation of the gear component 151, the locking component 152 swings along with the rotation of the gear component 151. The limiting component 154 is installed on the inner wall of the housing 11, located on the side of the locking component 152 away from the gear component 151, and maintains a certain distance from the locking component 152. After the locking component 152 rotates at a certain angle, the limiting component 154 restricts the rotation of the locking component 152, so that the locking component 152 can return to its original position in time after rotation.

[0072] This invention, through the setting of a limiting component, controls the swing angle of the locking component, preventing the locking component from rotating too much and failing to return to its original position in time, thus ensuring the normal operation of the gear adjustment function and improving product performance.

[0073] In some embodiments, such as Figure 7 As shown, the reel 1 also includes a positioning element 153 for fixing the gear position, such as... Figure 10 As shown, the positioning member 153 includes a base 1531 and a second protrusion 1532. The base 1531 is rotatably connected to the housing 11 (see [reference]). Figure 4 The second protrusion 1532 protrudes from the chassis 1531 toward the wheel 1523, and multiple second protrusions 1532 are spaced apart circumferentially along the edge of the chassis 1531; the number of second protrusions 1532 is not limited. It can be understood that the positioning member 153 is rotatably connected to the housing 11 via the chassis 1531, and the second protrusions 1532 are fixedly mounted on the chassis 1531, protruding towards the side near the wheel 1523. When the wheel 1523 swings, it cooperates with the positioning member 153 to achieve a fixed gear position. For example... Figure 7 As shown, a positioning block 1524 and a toggle block 1525 are protruding and spaced apart on the wheel 1523. At least a portion of the positioning member 153 is located between the positioning block 1524 and the toggle block 1525. The positioning block 1524 is used to abut between two adjacent second protrusions 1532 to fix the gear position, and the toggle block 1525 is used to rotate the positioning member 153. It can be understood that the positioning block 1524 and the toggle block 1525 are arranged on the wheel 1523 and on different sides relative to the positioning member 153. The gear member 151, the snap-fit ​​member 152, the limiting member 154, and the positioning member 153 constitute the adjustment assembly 15 of the cable reel, and the rotation of each part cooperates with each other to achieve gear adjustment.

[0074] As the wheel 1523 swings, the positioning block 1524 and the actuating block 1525 will also rotate together at a certain angle. When the positioning block 1524 swings to engage with the positioning member 153, the gear position can be fixed. When the actuating block 1525 swings to engage with the positioning member 153, it can actuate the positioning member 153 to rotate, preparing for the next engagement between the positioning block 1524 and the positioning member 153.

[0075] In this embodiment of the invention, the positioning block and the toggle block on the positioning component and the snap-fit ​​component work together to enable the cable reel to accurately fix the gear position after switching gears, further improving the user experience.

[0076] In some embodiments, such as Figure 10 and Figure 11 As shown, a recess is formed between adjacent second protrusions 1532, and the recess includes a first recess 1534 and a second recess 1535 spaced apart. The depth D1 of the first recess 1534 is less than the depth D2 of the second recess 1535. It can be understood that the positioning member 153 is circumferentially spaced with multiple first recesses 1534 and second recesses 1535 of different depths, and the positioning block 1524 can cooperate with all of them.

[0077] The working principle of the gear adjustment of the cable reel in the embodiment of the present invention will be explained below. When the gear 151 rotates clockwise (when the data cable is retracted), it will drive the snap-fit ​​152 to swing counterclockwise by a certain angle. The positioning block 1524 set on the snap-fit ​​152 gradually approaches the positioning component 153 as the wheel swings and cooperates with the positioning component 153.

[0078] like Figure 8 As shown, when the positioning block 1524 engages with the first recess 1534, due to the limitation of the depth of the first recess 1534, the engagement depth between the positioning block 1524 and the positioning member 153 is relatively shallow, which limits the continued rotation of the snap-fit ​​member 152 with the gear member 151. This causes the actual angle A1 rotated by the first protrusion to be less than the angle corresponding to the gear member 151 rotating through one tooth, i.e., A1 < A. At this time, the angle of rotation of the first protrusion 1521 is insufficient to avoid the teeth of the gear member 151, which will hinder the gear member 151 from rotating further clockwise. The wheel core 14 will also be unable to continue rotating clockwise, and the data cable cannot be retracted. The length of the data cable stretched out of the housing is fixed, thereby playing a positioning role after the stretching position.

[0079] like Figure 9 As shown, when the positioning block 1524 engages with the second recess 1535, due to the greater depth of the second recess, the locking member 152 rotates with the gear member 151 until the positioning block 1524 abuts against the bottom of the second recess 1535, causing the first protrusion 1521 to rotate at an angle A2 greater than the angle corresponding to the gear member 151 rotating through one tooth, i.e., A2 > A. At this time, the angle of rotation of the first protrusion 1521 is sufficient to avoid the teeth of the gear member 151, allowing the gear member 151 to rotate clockwise without restriction, and the wheel core 14 can also move smoothly clockwise, thereby realizing the smooth retraction of the data cable after it is stretched out.

[0080] This invention, through different engagement methods between the positioning component and the positioning block on the snap-fit ​​component, controls the swing angle of the snap-fit ​​component, thereby achieving positioning at different gear positions. The structure is simple, and the use of snap-fit ​​components instead of the swing component moving on the track reduces wear on the components and improves the product's service life.

[0081] In some embodiments, such as Figure 7 As shown, the actuating block 1525 is a triangular block, so that when the triangular block abuts against the second protrusion 1532, the actuating positioning member 153 rotates until the triangular block abuts against the adjacent second protrusion 1532 to adjust the gear position. That is, the latching member 152 is provided with a toctuating block 1525 in the shape of a triangular block, the toctuating block 1525 can abut against the second protrusion 1532, and the actuating positioning member 153 rotates a certain angle, the angle of rotation being exactly the angle between two adjacent second protrusions 1532.

[0082] Among them, such as Figure 12 As shown, when the gear component 151 rotates counterclockwise (the data cable is stretched outward), it drives the locking component 152 to rotate clockwise. The actuating block 1525 abuts against the second recess 1535 on the positioning component 153. At this time, the actuating block 1525 will push the positioning component 153 to rotate to the adjacent second recess. Since the first recess 1534 and the second recess 1535 are spaced apart, different engagement states of the positioning block 1524 and the positioning component 153 can be switched, thereby achieving the function of switching gears.

[0083] In this embodiment of the invention, the gear position is adjusted by setting the toggle block as a triangular block. The toggle angle is accurate, which can achieve accurate positioning and improve the user experience.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A method for setting a cable reel, the cable reel comprising a reel core and a gear component that rotates with the reel core, wherein a data cable is wound around the reel core and extends out from the cable reel; characterized in that, The setting method includes: Get the maximum change in the extension length of the data cable during the switching between any two adjacent gear positions; Determine the change in the length of the data line corresponding to one revolution of the wheel core; The number of teeth arranged circumferentially in the gear component is determined based on the maximum change value and the length change value; The data cable extends from both ends of the cable reel, and determining the change in the length of the data cable corresponding to one revolution of the reel includes: Determine the length of the two outermost turns of the data cable wound around the wheel core, from the outside in; The sum of the lengths of the two outermost rings is determined as the length change value. Determining the length of the two outermost turns of the data cable wound around the wheel core from the outside in includes: Determine the diameter of the wheel core to which the data cable is wound; Determine the thickness of the data cable; Determine the number of times the data cable is wound around the wheel core; Based on the diameter of the wheel core, the thickness of the data cable, and the number of turns, the diameters of the first and second turns of the data cable wound around the wheel core from the outside to the inside are calculated respectively. The lengths of the first and second rings are determined based on their diameters, and the lengths of the first and second rings are added together to obtain the sum of the lengths of the outermost two rings.

2. The setting method according to claim 1, characterized in that, Determining the number of teeth arranged circumferentially in the gear component based on the maximum change value and the length change value includes: The tooth parameters are determined by dividing the length change value by the maximum change value. If the tooth parameter is a positive integer, then the tooth parameter is used as the number of teeth; If the tooth parameter is not a positive integer, the number of teeth is determined by rounding the tooth parameter using a preset rounding method.

3. The setting method according to claim 1 or 2, characterized in that, The data cable extends from one end of the cable reel, and determining the change in the length of the data cable corresponding to one revolution of the reel includes: Determine the length of the outermost turn of the data cable wound around the wheel core; The length of the outermost ring is determined as the length variation value.

4. The setting method according to claim 3, characterized in that, Determining the length of the outermost turn of the data cable wound around the spool includes: Determine the diameter of the wheel core to which the data cable is wound; Determine the thickness of the data cable; Determine the number of times the data cable is wound around the wheel core; Based on the diameter of the wheel core, the thickness of the data cable, and the number of turns, the diameter of the outermost turn of the data cable wound around the wheel core is calculated. The length of the outermost ring is determined based on the diameter of the outermost ring.

5. A cable reel employing the cable reel setting method according to any one of claims 1-4, the cable reel further comprising: The housing has an internal cavity, and the housing has an opening for the data cable to pass through, the opening communicating with the cavity; A snap-fit ​​component is connected to the housing, the snap-fit ​​component having a first protrusion that snaps into the gear component, the first protrusion swinging as the gear component rotates; The wheel core is disposed within the receiving cavity for winding the data cable, and the wheel core can rotate as the data cable extends and retracts; the first protrusion of the snap-fit ​​member and the gear teeth of the gear member can collide with each other to emit a prompt sound.

6. The reel according to claim 5, characterized in that, The cable reel also includes a limiting member disposed on the side of the latching member away from the gear member, to limit the angle at which the latching member rotates with the gear member.

7. The reel according to claim 6, characterized in that, The reel also includes a positioning element for fixing the gear position, the positioning element comprising: The chassis is rotatably connected to the housing; The second protrusion protrudes from the chassis toward the snap-fit ​​member, and multiple second protrusions are provided at circumferential intervals along the edge of the chassis; The snap-fit ​​component has a positioning block and a toggle block protruding at intervals. At least a portion of the positioning component is located between the positioning block and the toggle block. The positioning block is used to abut against two adjacent second protrusions to fix the position, and the toggle block is used to rotate the positioning component.

8. The reel according to claim 7, characterized in that, A recess is formed between adjacent second protrusions, the recess comprising a first recess and a second recess spaced apart; Wherein, the depth of the first recess is less than the depth of the second recess, so that when the positioning block extends into the first recess, the swing angle of the first protrusion is less than the angle corresponding to each tooth of the gear component; when the positioning block extends into the second recess, the swing angle of the first protrusion is greater than the angle corresponding to each tooth of the gear component.

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