Drive device
By designing a structure that fits the annular groove and the slider in the drive device, providing a moderate radial abutment force, the problem of resistance bending of leads in traditional drive devices is solved, and the reliability of the drive device and the service life of the leads are improved.
Patent Information
- Application Number
- CN202510601370.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2025-06-24
AI Technical Summary
Traditional driving devices are prone to bending due to resistance during the lead roll-out process, which may cause permanent plastic deformation or breakage, affecting the reliability of the driving device.
A driving device is designed, wherein the rotating member has an annular groove for receiving the lead wire, the slider slides with the guide groove, and the fixed place slides away from the center of the rotating member in the guide groove, and the rotating member provides a moderate radial abutment force to the slider in the radial direction to ensure that the lead is tightly fit and avoid bending.
With moderate radial abutment force, excessive friction and wear between the two adjacent turns of the lead is avoided, ensuring smooth introduction of the lead, improving the reliability of the drive device, and preventing bending or breaking caused by gaps.
Smart Images
Figure CN120191804A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of mechanical tooling, and particularly to a driving device. Background Art
[0002] The driving device is used for winding leads, and the driving device can push out or retract the wound leads, so that the driving device can be applied to different working conditions. However, for a traditional driving device, during the process of pushing out the leads from the driving device, when the leads are subjected to resistance, the leads are likely to bend inside the driving device. Given that the leads are slender structures, the bent leads are prone to permanent plastic deformation or even breakage, which will affect the reliability of the driving device. Summary of the Invention
[0003] One technical problem solved by this application is how to improve the reliability of the driving device.
[0004] A driving device includes:
[0005] A rotating member, which is provided with an annular groove arranged around the central axis of the rotating member. The annular groove is used to accommodate the leads wound around the rotating member, and a guiding groove communicating with the annular groove is provided on the rotating member;
[0006] A sliding member, which is slidably matched with the guiding groove. The sliding member has a fixing portion located in the annular groove and used for fixing the leads. When the rotating member rotates in a set direction, the fixing portion slides away from the center of the rotating member in the guiding groove, and the radial abutting force of the rotating member on the sliding member in the radial direction of the rotating member is within a set range.
[0007] In one embodiment, the radial abutting force of the rotating member on the sliding member can overcome the resistance between the sliding member and the guiding groove.
[0008] In one embodiment, taking the connection line between the fixing portion and the center of the rotating member as a reference straight line, when the fixing portion slides away from the center of the rotating member in the guiding groove, the included angle between the extending direction of the guiding groove at the fixing portion and the reference straight line is within a set range.
[0009] In one embodiment, the guiding groove extends along a curve.
[0010] In one embodiment, a set included angle is adopted between the extending direction of the guiding groove at the fixing portion and the reference straight line, and the value range of the included angle is from 0.01° to 89°.
[0011] In one embodiment, the rotating member includes two rotating parts spaced along the central axis of the rotating member, and a gap between the two rotating parts forms the annular groove. The guiding groove includes a first guiding groove and a second guiding groove. The first guiding groove is arranged on one of the rotating parts, and the second guiding groove is arranged on the other rotating part.
[0012] In one embodiment, the sliding member includes a connecting part, a first sliding part and a second sliding part. Two ends of the connecting part are respectively connected to the first sliding part and the second sliding part. The fixing part is located at the connecting part. The first sliding part cooperates with the first guiding groove, and the second sliding part cooperates with the second guiding groove.
[0013] In one embodiment, both the first sliding part and the second sliding part are rotatably connected to the connecting part, and both the first sliding part and the second sliding part include a plurality of rollers arranged at intervals. The rollers are in rolling cooperation with the guiding groove.
[0014] In one embodiment, a limiting member is further included. The limiting member is arranged at the edge of the rotating member to abut against the lead along the radial direction of the rotating member.
[0015] In one embodiment, the width of the lead is greater than or equal to half of the width of the annular groove and less than or equal to the width of the annular groove.
[0016] One technical effect of an embodiment of the present application is that: in view that the radial abutting force of the rotating member on the sliding member along the radial direction of the rotating member is within a set range, so that the magnitude of the radial abutting force of the rotating member on the sliding member along the radial direction of the rotating member is appropriate. On the one hand, it can avoid too large abutting force between adjacent turns of the lead, thereby avoiding too large friction between adjacent turns of the lead, ensuring the smooth ejection of the lead from the driving device, and also avoiding excessive wear of the lead during multiple repeated ejection processes, which affects the strength and service life, thereby improving the reliability of the driving device. On the other hand, it avoids too small abutting force between adjacent turns of the lead, that is, avoids too small abutting force of the rotating member on the sliding member, thereby avoiding the sliding member sliding close to the center of the rotating member under the action of gravity and other forces to overcome the radial abutting force, ensuring that the sliding member slides away from the center of the rotating member to eject the lead, avoiding gaps between adjacent turns of the lead, ensuring close fitting between adjacent turns of the lead, and also making the innermost turn of the lead closely fit with the adjacent turn, thereby preventing the lead from being bent or broken due to the gap when subjected to resistance, further improving the reliability of the driving device. Description of the Drawings
[0017] Figure 1 It is a schematic plan view of a traditional driving device.
[0018] Figure 2 Schematic side view structure diagram of a rotating member in a driving device provided for an embodiment.
[0019] Figure 3 Schematic partial three-dimensional structure diagram of a driving device provided for an embodiment.
[0020] Figure 4 For Figure 3 Schematic partial three-dimensional structure diagram of the shown driving device from another perspective.
[0021] Figure 5 For Figure 3 Schematic plan sectional structure diagram of the shown driving device.
[0022] Figure 6 For Figure 3 Schematic plan structure diagram of the shown driving device.
[0023] Figure 7 Schematic plan structure diagram of a driving device provided for another embodiment.
[0024] Figure 8 For Figure 3 Schematic three-dimensional sectional structure diagram of the shown driving device.
[0025] Figure 9 Schematic three-dimensional sectional structure diagram of a driving device provided for another embodiment.
[0026] Reference numerals: driving device 10, rotating member 11, lead wire 12, fixing point 13, annular groove 14, output hole 15, driving device 20, lead wire 30, fitting point 21, rotating member 100, annular groove 110, reference line 120, guiding groove 130, first groove 131, second groove 132, step surface 133, arc line 134, proximal end 135, distal end 136, rotating part 140, sliding member 200, first sliding part 210, second sliding part 220, fixing point 230, limiting member 300. Detailed Description of the Invention
[0027] To make the above objects, features, and advantages of the present application more apparent and understandable, the following detailed description of the specific embodiments of the present application will be made with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.
[0028] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.
[0029] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0030] In the present application, unless otherwise clearly specified and limited, if there are terms such as "installed", "connected", "joined", "fixed", etc., these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0031] In the present application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "on" or "under" a second feature, the meaning may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0032] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.
[0033] Referring to Figure 1 , for the conventional driving device 10, the lead wire 12 is wound around the rotating member 11 and received in the annular groove 14 of the rotating member 11. The lead wire 12 passes through the output hole 15 of the driving device 10. When the lead wire 12 is pushed out of the driving device 10, the length of the lead wire 12 exposed outside the output hole 15 increases. When the lead wire 12 is retracted into the driving device 10, the length of the lead wire 12 exposed outside the output hole 15 decreases. And, one end of the lead wire 12 is directly fixed on the rotating member 11, so that the fixing position 13 for fixing the lead wire 12 on the rotating member 11 remains unchanged on the rotating member 11, that is, the fixing position 13 cannot slide or rotate relative to the rotating member 11. For example, when the rotating member 11 rotates clockwise, the lead wire 12 can be gradually pushed out of the driving device 10. When the rotating member 11 rotates counterclockwise, the lead wire 12 can be gradually retracted into the driving device 10. In view of the fact that the fixing position 13 for fixing the lead wire 12 on the rotating member 11 remains unchanged on the rotating member 11, during the process of the lead wire 12 being pushed out, especially when the length of the lead wire 12 wound around the rotating member 11 is small, when the part of the lead wire 12 exposed outside the driving device 10 cannot move due to resistance, since the part of the lead wire 12 connected to the fixing position 13 does not form an effective limit, there is a gap between the innermost circle and other circles of the lead wire 12. During the continuous clockwise rotation of the rotating member 11, the part of the lead wire 12 connected to the fixing position 13 will be bent, Figure 1 The dashed line in
[0034] Referring to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6, in an embodiment of the present application, a driving device 20 includes a rotating member 100 and a sliding member 200. The rotating member 100 is provided with an annular groove 110, and the annular groove 110 is arranged around the central axis of the rotating member 100. When the lead wire 30 is wound around the rotating member 100, the lead wire 30 will be received in the annular groove 110. It can be understood that the lead wire 30 can be wound in a spiral shape in the annular groove 110 to form multiple turns, and two adjacent turns are stacked on top of each other along the radial direction of the rotating member 100. A guiding groove 130 is formed on the rotating member 100, and the guiding groove 130 communicates with the annular groove 110. The sliding member 200 is slidably engaged with the guiding groove 130. The sliding member 200 has a fixing portion 230, and the fixing portion 230 is located in the annular groove 110. The end of the lead wire 30 is fixedly connected to the fixing portion 230. For example, when the rotating member 100 rotates clockwise, the lead wire 30 will gradually be pushed out from the rotating member 100, and the sliding member 200 slides away from the center of the rotating member 100 in the guiding groove 130. Obviously, the fixing portion 230 also slides away from the center of the rotating member 100; when the rotating member 100 rotates counterclockwise, the lead wire 30 will gradually be retracted into the rotating member 100, and the sliding member 200 slides closer to the center of the rotating member 100 in the guiding groove 130. Obviously, the fixing portion 230 also slides closer to the center of the rotating member 100.
[0035] Refer to Figure 5 and Figure 6 , it can be understood that when the rotating member 100 rotates clockwise, one side wall surface of the guiding groove 130 generates a resisting force on the sliding member 200. This resisting force F can be decomposed into a radial resisting force Fr and a tangential resisting force Ft. The radial resisting force Fr points from the center of the rotating member 100 to the fixing portion 230, that is, the sliding member 200 generates an outward radial resisting force along the radial direction of the rotating member 100, so that the inner circle of the lead wire 30 is closely attached to the outer circle of the lead wire 30, that is, two adjacent turns of the lead wire 30 are closely attached to each other. At this time, the radial resisting force Fr will push the sliding member 200 to move away from the center of the rotating member 100, and the tangential resisting force Ft generates a thrust on the lead wire 30, so that the lead wire 30 is pushed out from the driving device 20. When the rotating member 100 rotates counterclockwise, the other side wall surface of the guiding groove 130 generates a resisting force on the sliding member 200. This resisting force F can also be decomposed into a radial resisting force Fr and a tangential resisting force Ft. The radial resisting force Fr points from the fixing portion 230 to the center of the rotating member 100, that is, the sliding member 200 generates an inward radial resisting force along the radial direction of the rotating member 100. At this time, the radial resisting force Fr will push the sliding member 200 to move closer to the center of the rotating member 100, and the tangential resisting force Ft generates a pulling force on the lead wire 30, so that the lead wire 30 is retracted into the driving device 20.
[0036] Refer to Figure 6, when the fixing part 230 slides away from the center of the rotating part 100 in the guiding groove 130, the radial abutting force Fr of the rotating part 100 on the sliding part 200 along the radial direction of the rotating part 100 is within a set range. In this way, the sliding part 200 can overcome the resistance between it and the guiding groove 130, so as to maintain a movement trend of radially moving away from the center of the rotating part 100, or cause the sliding part 200 to move away from the center of the rotating part 100. For example, the radial abutting force Fr of the rotating part 100 on the sliding part 200 along the radial direction of the rotating part 100 can always remain constant. Another example is that the change range of the radial abutting force of the rotating part 100 on the sliding part 200 is not higher than 3.55%. The change range is understood as the ratio of the difference between two radial abutting forces Fr to the smaller radial abutting force Fr. Therefore, when the radial abutting force Fr of the rotating part 100 on the sliding part 200 along the radial direction of the rotating part 100 remains constant, the change range of the radial abutting force of the rotating part 100 on the sliding part 200 is zero.
[0037] In this way, the magnitude of the radial abutting force Fr of the rotating part 100 on the sliding part 200 along the radial direction of the rotating part 100 is appropriate. On the one hand, it can avoid too large abutting force between adjacent turns of the lead wire 30, so as to avoid large friction between adjacent turns of the lead wire 30, ensure the smooth ejection of the lead wire 30 from the driving device 20, and also avoid large wear of the lead wire 30 during multiple repeated ejection processes, which affects the strength and service life, thereby improving the reliability of the driving device 20. On the other hand, it can avoid too small abutting force between adjacent turns of the lead wire 30, that is, avoid too small abutting force of the rotating part 100 on the sliding part 200, so as to avoid the sliding part 200 sliding close to the center of the rotating part 100 under the action of gravity and other forces, overcoming the radial abutting force Fr, ensure that the sliding part 200 slides away from the center of the rotating part 100, avoid gaps between adjacent turns of the lead wire 30, ensure the tight fit between adjacent turns of the lead wire 30, and also make the innermost turn of the lead wire 30 fit tightly with the adjacent turn, thereby preventing the lead wire 30 from being bent due to this gap when being subjected to resistance, and further improving the reliability of the driving device 20.
[0038] Refer to Figure 5 and Figure 6, in some embodiments, during the process of the slider 200 sliding away from the center of the rotating member 100 along the guiding groove 130, taking the line connecting the fixing portion 230 and the center of the rotating member 100 as the reference line 120, the angle θ between the extending direction of the guiding groove 130 at the fixing portion 230 and the reference line 120 is within a set range. The guiding groove 130 can extend along a curve, and the extending direction of the guiding groove 130 can be understood as the tangent direction of the curve. It can be understood that during the process of the slider 200 sliding away from the center of the rotating member 100 along the guiding groove 130, the radial abutting force Fr of the rotating member 100 on the slider 200 = Fsinθ, and the tangential abutting force Ft of the rotating member 100 on the slider 200 = Fcosθ. Given that the abutting force F generated by the side wall surface of the guiding groove 130 on the slider 200 is within a set range, and the angle θ is within a set range, the radial abutting force Fr of the rotating member 100 on the slider 200 along the radial direction of the rotating member 100 is also within a set range. In this way, the magnitude of the radial abutting force Fr of the rotating member 100 on the slider 200 along the radial direction of the rotating member 100 is appropriate, so as to ensure that adjacent turns of the lead wire 30 are closely attached to each other, avoiding bending of the lead wire 30 due to the gap between adjacent turns when the lead wire 30 is subjected to resistance, thereby improving the reliability of the driving device 20. Of course, it also makes the magnitude of Ft appropriate, ensuring that the lead wire 30 can be pushed out of the driving device 20 under the action of sufficient thrust. In other embodiments, the rotating member 100 can be connected to the slider 200 through an intermediate force transmission mechanism, which can also make the radial abutting force Fr of the rotating member 100 on the slider 200 within a set range, and can also ensure that adjacent turns of the lead wire 30 are closely attached to each other to avoid bending or breaking of the lead wire 30, thereby improving the reliability of the driving device 20.
[0039] It can be understood that during the process of the rotating member 100 rotating counterclockwise to gradually retract the lead wire 30 into the driving device 20, given that the magnitude of the radial abutting force Fr of the rotating member 100 on the slider 200 along the radial direction of the rotating member 100 is appropriate, the slider 200 effectively slides close to the center of the rotating member 100 under the action of the radial abutting force Fr, and at the same time, the magnitude of Ft is also appropriate, ensuring that the lead wire 30 can be retracted into the driving device 20 under the action of sufficient pulling force.
[0040] In some embodiments, the angle between the extending direction of the guiding groove 130 at the fixing portion 230 and the reference line 120 is kept at a set angle. The value of the set angle θ can be from 0.01° to 89°, for example, the value of the set angle θ can be 0.01°, 45°, 89°, etc. In this way, it is convenient to make the magnitudes of Fr and Ft appropriate, and also makes the structure of the guiding groove 130 simpler, thereby reducing the processing difficulty of the guiding groove 130 and finally reducing the manufacturing cost of the driving device 20.
[0041] Refer to Figure 6 andFigure 7 In some embodiments, the guiding groove 130 extends along a curve. For example, the guiding groove 130 extends along an arc line 134, that is, the curve is the arc line 134. In this way, the design and processing difficulty of the guiding groove 130 can be reduced, thereby reducing the manufacturing cost of the driving device 20. It can also reduce the sliding resistance of the sliding member 200 in the guiding groove 130, thereby improving the smoothness of the sliding of the sliding member 200 in the guiding groove 130 and reducing the wear of the sliding member 200 and the guiding groove 130, thereby improving the sliding accuracy of the sliding member 200. During the design process of the guiding groove 130, first, the two extreme positions of the fixing portion 230 during sliding can be found. These two extreme positions are respectively denoted as the distal end 136 and the proximal end 135. The distal end 136 is farther from the center of the rotating member 100 than the proximal end 135. It can be understood that when the fixing portion 230 slides away from the center of the rotating member 100 to the distal end 136, the fixing portion 230 slides away from the center of the rotating member 100 to the extreme position and cannot continue to slide away from the center of the rotating member 100. When the fixing portion 230 slides close to the center of the rotating member 100 to the proximal end 135, the fixing portion 230 slides close to the center of the rotating member 100 to the extreme position and cannot continue to slide close to the center of the rotating member 100. Then, an arc line 134 is formed between the proximal end 135 and the distal end 136. The angle between the tangent of the arc line 134 at the distal end 136 and the reference line 120 passing through the distal end 136 and the angle between the tangent of the arc line 134 at the proximal end 135 and the reference line 120 passing through the proximal end 135 are approximately equal to the set value. After the arc line 134 is determined, the guiding groove 130 can be machined along the trajectory where the arc line 134 is located.
[0042] Refer to Figure 6 In some embodiments, a plurality of fitting points 21 can be provided on the rotating member 100. The fitting point 21 can be understood as the moving position of the fixing portion 230. The respective fitting points 21 are connected to form a curve. Taking the connection line between the fitting point 21 and the center of the rotating member 100 as the reference line, the angle between the reference line and the tangent of the curve at the fitting point 21 is the set value θ. Then, the guiding groove 130 can be machined along the trajectory of this curve.
[0043] Refer to Figure 7 In some embodiments, when the fixing portion 230 moves from the proximal end 135 to the distal end 136, the rotation angle of the sliding member 200 relative to the rotating member 100 is 30° to 32°. The rotation angle α of the sliding member 200 relative to the rotating member 100 can be 30°, 31° or 32°. For example, when the guiding groove 130 extends along the arc line 134, when the fixing portion 230 moves from the proximal end 135 to the distal end 136, the rotation angle α of the sliding member 200 relative to the rotating member 100 can be 31°.
[0044] Refer toFigure 8 , in some embodiments, the rotating member 100 includes two rotating parts 140. The two rotating parts 140 are arranged at intervals along the central axis of the rotating member 100, and a gap between the two rotating parts 140 forms an annular groove 110. The guiding groove 130 includes a first guiding groove 1301 and a second guiding groove 1302. The first guiding groove 1301 is arranged on one of the rotating parts 140, and the second guiding groove 1302 is arranged on the other rotating part 140. The sliding member 200 includes a first sliding part 210, a second sliding part 220 and a connecting part 240. The fixing part 230 is arranged on the connecting part 240. The connecting part 240 is inserted into the annular groove 110, so that the lead 30 is fixed and received in the annular groove 110. The two ends of the connecting part 240 are respectively connected to the first sliding part 210 and the second sliding part 220, so that the connecting part 240 is connected between the first sliding part 210 and the second sliding part 220. The first sliding part 210 cooperates with the first guiding groove 1301, and the second sliding part 220 cooperates with the second guiding groove 1302.
[0045] In some embodiments, both the first guiding groove 1301 and the second guiding groove 1302 include a first groove 131 and a second groove 132. The cross-sectional dimension of the first groove 131 is larger than that of the second groove 132. The second groove 132 can be formed by recessing the bottom wall surface of the first groove 131. The non-recessed part of the bottom wall surface of the first groove 131 forms a step surface 133. The step surface 133 surrounds the second groove 132. The first sliding part 210 cooperates with the first groove 131 of the first guiding groove 1301, and the second sliding part 220 cooperates with the first groove 131 of the second guiding groove 1302. The connecting part 240 is at least partially received in the annular groove 110. The step surface 133 can limit the first sliding part 210 and the second sliding part 220 well, so as to limit the whole sliding member 200 well, thereby improving the assembly efficiency and assembly accuracy of the sliding member 200, and effectively avoiding large swings of the sliding member 200 during the sliding process, ensuring that the sliding member 200 slides along the trajectory defined by the guiding groove 130, and thus improving the movement accuracy of the sliding member 200.
[0046] In some embodiments, for example, refer to Figure 8 , the second groove 132 is closer to the annular groove 110 than the first groove 131, so that the second groove 132 is directly connected to the annular groove 110, that is, the first groove 131 is located outside the second groove 132. The connecting part 240 is inserted into both the annular groove 110 and the second groove 132 of both the first guiding groove 1301 and the second guiding groove 1302. Again, refer to Figure 9, the first groove 131 is closer to the annular groove 110 than the second groove 132, such that the first groove 131 is directly connected to the annular groove 110, that is, the second groove 132 is located outside the first groove 131, and the connecting portion 240 is disposed in the annular groove 110. In this way, the entire slider 200 can be well limited, thereby improving the assembly efficiency and assembly accuracy of the slider 200.
[0047] See Figure 8 , in some embodiments, both the first sliding portion 210 and the second sliding portion 220 include a plurality of rollers, and the plurality of rollers are spaced apart. For example, the number of rollers can be two or more. By providing a plurality of rollers, the smoothness of the movement of the slider 200 can be improved, thereby improving the movement accuracy of the slider 200, and ensuring that the radial abutting force Fr of the rotating member 100 against the slider 200 in the radial direction of the rotating member 100 is within a set range.
[0048] See Figure 8 , in some embodiments, both the first sliding portion 210 and the second sliding portion 220 are rotatably connected to the connecting portion 240. During the sliding process of the slider 200 relative to the guiding groove 130, both the first sliding portion 210 and the second sliding portion 220 can rotate relative to the connecting portion 240, that is, the first sliding portion 210 and the second sliding portion 220 can move relative to the guiding groove 130 in a rolling manner. Therefore, rolling friction is generated between both the first sliding portion 210 and the second sliding portion 220 and the rotating member 100, thereby reducing the frictional resistance generated during the sliding process of the slider 200 relative to the rotating member 100, and finally improving the smoothness of the movement of the slider 200.
[0049] See Figure 5 , in some embodiments, the driving device 20 further includes a limiting member 300. The limiting member 300 is disposed at the edge of the rotating member 100, and the limiting member 300 can cover the notch of the annular groove 110, such that the limiting member 300 can abut against the outermost circle of the lead 30 in the annular groove 110 along the radial direction of the rotating member 100. In this way, the lead 30 can be well limited and supported, avoiding bending or breaking of the lead 30 during the pushing process, and ensuring the smooth pushing of the lead 30 out of the driving device 20. The width of the lead 30 can be greater than or equal to half of the width of the annular groove 110 and less than or equal to the width of the annular groove 110. In this way, the annular groove 110 can well limit the lead 30 along the width direction of the lead 30, that is, the leads 30 can only be arranged in a row along the axial direction of the rotating member 100, avoiding crossing and winding of multiple rows of leads 30 in the annular groove 110, and also ensuring the smooth pushing of the lead 30 out of the driving device 20.
[0050] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.
[0051] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.
Claims
1. A driving device, characterized in that: include: A rotating member, wherein the rotating member is provided with an annular groove arranged around the central axis of the rotating member, the annular groove is used to accommodate the lead wire wound on the rotating member, and the rotating member is provided with a guide groove connected to the annular groove; A sliding member, wherein the sliding member is slidably matched with the guide groove, and the sliding member has a fixing portion located in the annular groove and used to fix the lead wire. When the rotating member rotates in a set direction, the fixing portion slides in the guide groove away from the center of the rotating member, and the radial abutment force of the rotating member on the sliding member along the radial direction of the rotating member is within a set range.
2. The driving device according to claim 1, characterized in that: The radial abutment force of the rotating member on the sliding member can overcome the resistance between the sliding member and the guide groove.
3. The driving device according to claim 1, characterized in that: Taking the line connecting the fixed part and the center of the rotating member as a reference straight line, when the fixed part slides in the guide groove away from the center of the rotating member, the angle between the extension direction of the guide groove at the fixed part and the reference straight line is within a set range.
4. The driving device according to claim 3, characterized in that: The guide groove extends along a curve.
5. The driving device according to claim 3, characterized in that: The guide groove has a set angle between the extension direction of the fixed position and the reference straight line, and the value range of the angle is 0.01° to 89°.
6. The driving device according to claim 1, characterized in that: The rotating member includes two rotating parts arranged at intervals along the central axis of the rotating member, the gap between the two rotating parts forms the annular groove, and the guide groove includes a first guide groove and a second guide groove, the first guide groove is arranged on one of the rotating parts, and the second guide groove is arranged on the other rotating part.
7. The driving device according to claim 6, characterized in that: The sliding member includes a connecting portion, a first sliding portion and a second sliding portion, the two ends of the connecting portion are respectively connected to the first sliding portion and the second sliding portion, the fixing portion is located at the connecting portion, the first sliding portion cooperates with the first guide groove, and the second sliding portion cooperates with the second guide groove.
8. The driving device according to claim 7, characterized in that: Both the first sliding part and the second sliding part are rotatably connected to the connecting part, and both the first sliding part and the second sliding part include a plurality of rollers arranged at intervals, and the rollers are in rolling cooperation with the guide grooves.
9. The driving device according to claim 1, characterized in that: A limiting member is also included, and the limiting member is arranged at the edge of the rotating member so as to abut against the lead wire along the radial direction of the rotating member.
10. The driving device according to claim 1, characterized in that: The width of the lead is greater than or equal to half of the width of the annular groove and less than or equal to the width of the annular groove.