Transmission mechanism and tape winding device

Abstract

The present application relates to a kind of transmission mechanism and tape winding device, transmission mechanism is used in tape winding device, tape winding device includes frame, transmission mechanism includes mandrel assembly, turbine and worm, mandrel assembly is rotatably connected to frame, mandrel assembly can be used for the movable end of flexible band to pass and be fixedly wound;Worm wheel is fixedly connected to mandrel assembly;Worm is rotatably connected to frame, and can be engaged with worm wheel, to drive worm wheel relative frame rotation;Wherein, worm can also be relative frame along the axis direction of itself, to make worm and worm wheel disengage engagement.It is not only to be able to realize the tensioning of flexible band by the above structure form, but also has safe operation and foolproof function, to reduce the risk of worm being loosened damage.

Description

Technical Field

[0001] This invention relates to the field of strapping machinery technology, and in particular to a transmission mechanism and a tape winding device. Background Technology

[0002] Flexible straps are widely used for securing items, such as goods to vehicles, to prevent them from shifting or falling off. Various devices and equipment are available on the market that allow for manual or electric operation to attach flexible straps to objects or goods.

[0003] For example, Chinese invention patent application CN 104781107 A discloses a strap tensioning system, including a strap tensioner and a flexible strap. The strap tensioning system includes a frame, with a strap storage space defined between the two side walls of the frame. A mandrel, a drive rod, a worm gear, and an anchoring post are mounted on the frame. The mandrel allows for detachable mounting and fixing of the first end of the strap, and a worm wheel is supported at the end of the mandrel. The drive rod can be operated manually by a hand crank or electrically, thereby driving the worm gear to rotate. The worm gear has helical grooves that mesh with the teeth of the worm wheel to drive the worm wheel and the mandrel to rotate. The anchoring post allows for non-detachable mounting and fixing of the second end of the strap. Accordingly, by turning the hand crank or by electric operation, the first end of the strap wound on the mandrel can be indirectly rotated to shorten the total length of the strap used for binding, thereby generating binding tension to achieve the effect of binding and tightening items or goods.

[0004] In related technologies, when the operator is unfamiliar with the belt winding device, misoperation may occur. This could cause the tension of the belt to be transmitted to the worm, resulting in the worm being pushed upwards against the frame. Since the top of the worm is usually positioned and limited by a retaining spring, which is usually unable to withstand excessive axial force, the retaining spring can easily be pushed out of the retaining spring positioning groove of the worm under the aforementioned improper operation, leading to the worm becoming loose and damaged. Summary of the Invention

[0005] Therefore, it is necessary to provide a transmission mechanism and a belt winding device to address the technical problem of worm gear loosening and damage caused by misoperation in the belt winding device in related technologies.

[0006] A transmission mechanism is used in a tape winding device, the tape winding device including a frame, the transmission mechanism comprising:

[0007] A mandrel assembly is rotatably connected to the frame, and the mandrel assembly allows the movable end of the flexible strap to be inserted and wound for fixation;

[0008] The worm gear is fixedly connected to the spindle assembly;

[0009] A worm gear is rotatably connected to the frame and can mesh with the worm wheel to drive the worm wheel to rotate relative to the frame;

[0010] The worm can also move relative to the frame along its own axis to disengage the worm from the worm wheel.

[0011] In one embodiment, the transmission mechanism further includes a support frame, the support frame having an upper sidewall and a lower sidewall disposed opposite to each other, and a bottom wall connected to the upper sidewall and the lower sidewall, one end of the upper sidewall and the lower sidewall being fixedly connected to the outer sidewall of the frame away from the bottom wall, and one end of the bottom wall being rotatably connected to the spindle assembly;

[0012] The upper sidewall, the bottom wall, and the lower sidewall enclose and define an accommodating space. The worm passes through the upper sidewall and the lower sidewall and is partially disposed within the accommodating space. The upper sidewall can limit the worm when it disengages from the worm wheel.

[0013] In one embodiment, the worm gear includes:

[0014] The upper shaft section is sleeved on the upper side wall;

[0015] The lower shaft section is sleeved on the lower side wall;

[0016] A toothed segment is disposed between the upper shaft segment and the lower shaft segment and is connected to the upper shaft segment and the lower shaft segment. The toothed segment is provided with a plurality of teeth for meshing with the worm gear.

[0017] When the worm moves back and forth along its own axis, the tooth segment can switch between being engaged with and disengaged from the worm wheel.

[0018] In one embodiment, a limiting groove is provided on the upper shaft section; the transmission mechanism further includes:

[0019] A cover, detachably connected to the frame, and enclosing the worm gear, support frame, tooth segment, and a portion of the upper and lower shaft segments;

[0020] A limiting snap ring is provided on the cover. When the worm moves to the point where the tooth segment disengages from the worm wheel, one end of the limiting snap ring can be engaged in the limiting groove.

[0021] In one embodiment, the mandrel assembly includes:

[0022] The mandrel body includes two opposing elongated menisci, which are spaced apart to define a threading groove.

[0023] At least two fasteners are provided at both ends of the mandrel body, and each fastener is connected to both menisci.

[0024] In one embodiment, the transmission mechanism further includes a wave spring, which is sleeved on the spindle body and disposed between the worm gear and the support frame.

[0025] In one embodiment, the mandrel assembly further includes two bushings, which are respectively nested on two opposite sidewalls of the frame. The two ends of the mandrel body pass through the two bushings and are rotatable relative to the bushings.

[0026] In one embodiment, the transmission mechanism further includes:

[0027] A hand crank, one end of which is fixedly connected to the worm gear, drives the worm gear to rotate around its own axis, thereby linking the worm wheel and the spindle assembly to change the length and binding tension of the flexible strap.

[0028] In one embodiment, the hand crank includes interconnected components:

[0029] The first member has one end fixedly connected to the worm gear;

[0030] The second member is pivotally connected at one end to the other end of the first member;

[0031] The handle is connected to the other end of the second rod.

[0032] In one embodiment, the framework includes:

[0033] The first sidewall, wherein the worm gear and the worm are disposed on the outer side of the first sidewall;

[0034] A baffle is provided on the first side wall. The first side wall and the baffle together enclose and define a fixing groove. The fixing groove allows the handle to be inserted and positioned in the fixing groove after the second rod is pivoted relative to the first rod.

[0035] In one embodiment, the transmission mechanism further includes a quick-rotor component fixedly connected to the end of the spindle assembly opposite to the worm wheel. When the worm disengages from the worm wheel, the quick-rotor component operably drives the spindle assembly to rotate relative to the frame.

[0036] A tape winding device, the tape winding device including the transmission mechanism as described above.

[0037] The beneficial effects of this invention are: Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the external structure of the winding device provided in an embodiment of the present invention, showing the worm gear in a state of engagement with the turbine.

[0039] Figure 2 This is a schematic diagram of the external structure of the winding device provided in an embodiment of the present invention, showing the worm gear in a disengaged state from the turbine.

[0040] Figure 3 This is a schematic diagram of the structure of the winding device provided in the embodiment of the present invention when the worm gear is engaged with the turbine gear and there is no cover.

[0041] Figure 4 The front view of the winding device provided in the embodiment of the present invention when the worm gear is engaged with the turbine gear and there is no cover.

[0042] Figure 5 This is a schematic diagram of the structure of the winding device provided in the embodiment of the present invention when the worm gear is engaged with the turbine gear and there is no cover, from another perspective.

[0043] Figure 6 This is a cross-sectional schematic diagram of the worm gear in the tape winding device provided in an embodiment of the present invention;

[0044] Figure 7 This is a partially enlarged schematic diagram showing the engagement of the limiting spring and the limiting groove in the tape winding device provided in an embodiment of the present invention;

[0045] Figure 8 This is a schematic diagram of the structure of the cover in the tape winding device provided in an embodiment of the present invention;

[0046] Figure 9 This is a partially enlarged schematic diagram of the cover in the tape winding device provided in an embodiment of the present invention;

[0047] Figure 10 This is a schematic diagram of the structure of the tape winding device provided in an embodiment of the present invention when the flexible cable is not installed;

[0048] Figure 11 This is a schematic diagram of the tape winding device provided in an embodiment of the present invention when the flexible strap is not installed, from another perspective.

[0049] Figure 12 This is a schematic diagram of the tape winding device provided in an embodiment of the present invention from the perspective of a fast-rotating component;

[0050] Figure 13 This is a schematic diagram of the structure of the fast-rotor component in the tape winding device provided in an embodiment of the present invention;

[0051] Figure 14 This is a partially enlarged schematic diagram of the worm gear and turbine in the winding device provided in an embodiment of the present invention when they are in a disengaged state.

[0052] Figure 15 This is a partially enlarged schematic diagram of the worm gear and turbine in the winding device provided in an embodiment of the present invention when they are in a meshing state.

[0053] Figure 16 This is a partially enlarged schematic diagram of the turbine section in the tape winding device provided in an embodiment of the present invention;

[0054] Figure 17 This is a schematic diagram of the structure of the winding device provided in the embodiment of the present invention after the mandrel body and the flexible cable are wound together.

[0055] Figure label:

[0056] Transmission mechanism 100; spindle assembly 110; spindle body 111; meniscus 1111; fastener 112; bushing 113; worm gear 120; worm 130; upper shaft section 131; connecting shaft 1311; upper bushing 1312; limiting groove 1312a; nut 1313; lower shaft section 132; gear section 133; support frame 140; upper side wall 141; lower side wall 142; bottom wall 143; cover 150; snap ring receiving groove 1 51; Limiting snap ring 160; Wave spring 171; Pad 172; Hand crank 180; First rod 181; Second rod 182; Handle 183; Quick-turn component 190; First dividing hole 191; Frame 200; First side wall 210; Second side wall 220; Base plate 230; Connecting piece 240; Baffle 250; Fixed rod 300; Movable rod sleeve 310; Bolt 320; Nut 330; Flexible strap 400. Detailed Implementation

[0057] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0058] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0063] See Figures 1 to 17 An embodiment of the present invention provides a tape winding device, which includes a frame 200 and a fixing rod 300. The frame 200 includes a first sidewall 210 and a second sidewall 220 that are disposed opposite to and spaced apart from each other. The frame 200 also includes a base plate 230. The first sidewall 210 and the second sidewall 220 are respectively connected to opposite ends of the base plate 230, such that the first sidewall 210, the base plate 230, and the second sidewall 220 together enclose and define an accommodating space. Both the first sidewall 210 and the second sidewall 220 have a first end and a second end. The ends of the first sidewall 210 and the second sidewall 220 facing away from the base plate 230 are interlocked by a connecting piece 240. The fixing rod 300 is disposed within the accommodating space, and its two ends are respectively connected to the first sidewall 210 and the second sidewall 220, with the fixing rod 300 located at the first ends of the first sidewall 210 and the second sidewall 220.

[0064] The fixing rod 300 is used to connect and fix the fixed end of the flexible strap 400. The fixing rod 300 includes a movable rod sleeve 310, a bolt 320 and a nut 330. The movable rod sleeve is set in the accommodating space. The bolt 320 passes through the first side wall 210, the movable rod sleeve 310 and the second side wall 220 and is screwed and locked with the nut 1313 to pivotally connect the movable rod sleeve 310 to the accommodating space of the frame 200.

[0065] The tape winding device provided in the embodiments of the present invention further includes a transmission mechanism 100 (see reference). Figures 1 to 17 (Understood)

[0066] An embodiment of the present invention provides a transmission mechanism 100 for use in a tape winding device. The tape winding device includes a frame 200. The transmission mechanism 100 includes a spindle assembly 110, a worm gear 120, and a worm 130. The spindle assembly 110 is rotatably connected to the frame 200 and allows the movable end of a flexible belt 400 to pass through and be wound and fixed. The worm gear is fixedly connected to the spindle assembly 110. The worm gear 130 is rotatably connected to the frame 200 and can mesh with the worm gear to drive the worm gear to rotate relative to the frame 200. The worm gear 130 can also move relative to the frame 200 along its own axial direction to disengage the worm gear from the worm gear.

[0067] The transmission mechanism 100 provided in this embodiment is used in a tape winding device to drive the flexible strap 400 to move, thereby providing a binding tension force to the flexible strap 400. The mandrel assembly 110 allows the movable end of the flexible strap 400 to pass through and be wound and fixed. The mandrel assembly 110 is rotatably connected to the frame 200, so that when the mandrel assembly 110 rotates relative to the frame 200, it drives the flexible strap 400 to move, thereby providing a binding tension force for the flexible strap 400. By fixing the mandrel assembly 110 to the worm gear 120, and rotatably connecting the worm 130 to the frame 200, the worm 130 meshes with the worm gear 120, so that rotating the worm 130 drives the worm gear to rotate, thereby causing the mandrel assembly 110 to be linked with the worm wheel. By configuring the worm gear 130 to move relative to the frame 200 along its own axis, it can disengage from the worm wheel 120. With this configuration, even in the event of accidental operation, if the worm gear 130 is pushed upwards along its own axis due to the aforementioned erroneous operation, it will only disengage from the worm wheel, thus losing its force transmission effect. Therefore, it will not cause damage to the worm gear 130 or other related components, only producing an effect similar to free-spinning, thus providing safe operation and preventing mistake-proofing. This structural design not only achieves tensioning and restraint of the flexible belt 400 but also provides safe operation and prevents mistake-proofing, thereby reducing the risk of the worm gear 130 becoming loose and damaged.

[0068] like Figure 1 As shown, in this embodiment, the transmission structure is disposed near the second end (the second end is) of the first sidewall 210 and the second sidewall 220. Figure 1 The turbine 120 is sleeved and fixed to one end of the spindle assembly 110 and located on the outside of the first sidewall 210.

[0069] like Figures 3 to 5 As shown, in one embodiment, the transmission mechanism 100 further includes a support frame 140, which has an upper sidewall 141 and a lower sidewall 142 disposed opposite to each other, and a bottom wall 143 connected to the upper sidewall 141 and the lower sidewall 142. The ends of the upper sidewall 141 and the lower sidewall 142 opposite to the bottom wall 143 are fixedly connected to the outer sidewall of the frame 200, and one end of the bottom wall 143 is rotatably connected to the spindle assembly 110. The upper sidewall 141, the bottom wall 143 and the lower sidewall 142 enclose and define an accommodating space. The worm 130 passes through the upper sidewall 141 and the lower sidewall 142 and is partially disposed within the accommodating space. The upper sidewall 141 can limit the worm 130 when it disengages from the worm wheel.

[0070] In this embodiment, the ends of the upper sidewall 141 and lower sidewall 142 opposite to the bottom wall 143 are fixedly connected to the outer side of the first sidewall 210 and correspond to the position of the worm gear 130. One end of the bottom wall 143 is rotatably connected to the spindle assembly 110, so that the worm gear 130 is supported by the upper sidewall 141 and lower sidewall 142, and the spindle assembly 110 is supported by the bottom wall 143, thereby realizing the rotatable connection between the worm gear 130 and the frame 200, and the smoothness of the rotation of the spindle assembly 110. Furthermore, the upper sidewall 141 and lower sidewall 142 limit the worm gear 130 to prevent it from disengaging from the frame 200, thereby ensuring the stability of the transmission mechanism 100 during operation.

[0071] like Figure 6 As shown, specifically, in one embodiment, the worm 130 includes an upper shaft section 131, a lower shaft section 132, and a toothed section 133. The upper shaft section 131 is sleeved on the upper sidewall 141; the lower shaft section 132 is sleeved on the lower sidewall 142; the toothed section 133 is disposed between the upper shaft section 131 and the lower shaft section 132 and is connected to the upper shaft section 131 and the lower shaft section 132. The toothed section 133 is provided with a plurality of teeth for meshing with the worm wheel; when the worm 130 moves back and forth along its own axis, the toothed section 133 can switch between the state of meshing with and disengaging from the worm wheel.

[0072] Continue to refer to Figure 6 As understood, the upper shaft section 131 includes an upper shaft sleeve 1312, a nut 1313, and a connecting shaft 1311. The connecting shaft 1311 is integrally formed with the toothed section 133, and the upper sleeve is fitted onto the outside of the connecting shaft 1311. One end of the connecting shaft 1311 passes through a hole in the upper sidewall 141 and is threaded into the nut 1313. An internal thread is provided at the end of the toothed section 133. An external thread is provided at the end of the lower shaft section 132 opposite to the toothed section 133. The lower shaft section 132 and the toothed section 133 are connected by a threaded engagement. A step is provided on the lower shaft section 132, which can be grooved into the lower sidewall 142 of the support frame 140 to prevent the worm gear 130 from disengaging from the support frame 140.

[0073] Combination Figure 6 and Figure 7 It is understood that, in one embodiment, a limiting groove 1312a is provided on the upper shaft section 131; the transmission mechanism 100 also includes a cover 150 and a limiting snap ring 160. The cover 150 is detachably connected to the frame 200 and covers the worm gear, support frame 140, tooth section 133, and a portion of the upper shaft section 131 and lower shaft section 132 inside; the limiting snap ring 160 is provided on the cover 150. When the worm 130 moves to the point where the tooth section 133 disengages from the worm gear, one end of the limiting snap ring 160 can be engaged in the limiting groove 1312a.

[0074] Specifically, the limiting groove 1312a on the upper shaft section 131 is provided on the upper shaft sleeve 1312, and the limiting groove 1312a is an annular groove along the circumference of the upper sleeve. With this configuration, when the limiting snap ring 160 needs to be inserted into the limiting groove 1312a, the limiting snap ring 160 can be inserted into the annular groove no matter where the worm 130 is rotated, so as to ensure the reliability of the limiting snap ring 160 in limiting the worm 130.

[0075] like Figure 8 and Figure 9 As shown, a retaining spring groove 151 is provided on the inner side of the cover 150. The retaining spring groove 151 has an installation opening facing the first side wall 210 of the frame 200. The limiting retaining spring 160 is approximately Z-shaped and can be inserted into and positioned in the retaining spring groove 151 through the installation opening. The position where the limiting retaining spring 160 engages with the limiting groove 1312a forms an arc-shaped groove, so that when the limiting retaining spring 160 is elastically embedded and positioned in the limiting ring groove, the arc-shaped groove can fit against the side wall of the upper sleeve, thereby improving the reliability of the limiting retaining spring 160 in limiting the worm gear 130. The worm gear, support frame 140, and a portion of the tooth section 133, upper shaft section 131, and lower shaft section 132 are covered by the cover 150 to protect the meshing parts and prevent accidental injury to the operator during operation, thereby improving safety performance.

[0076] The retaining snap ring 160 can be installed on the cover 150 and can be elastically locked in the retaining groove 1312a of the worm 130 when the worm 130 is moved to disengage from the turbine 120. This ensures that the worm 130 is positioned in the disengaged position and does not return to the engaged position uncontrollably. For example, it can prevent the worm 130 from falling vertically downward to the engaged position due to its own weight and the weight of other connecting components.

[0077] like Figure 8 and Figure 9As shown, a square retaining spring groove 151 is provided on the upper inner side wall of the cover 150, and a clearance hole is provided on the upper side wall of the cover 150 to allow the upper shaft section 131 of the worm 130 to pass through. The arc-shaped groove of the limiting retaining spring 160 is provided in the clearance hole to facilitate its engagement with the worm 130. It should be noted that the main purpose of the limiting retaining spring 160 in this embodiment is to position the worm 130 in the disengaged position from the turbine 120, preventing it from falling uncontrollably downwards due to its own weight or the weight of other connecting components, and thus returning to the engaged position. Therefore, its structural design is not intended to prevent the worm 130 from moving further upwards longitudinally from the disengaged position. Therefore, in terms of structural design, in this embodiment, above the tooth segment 133 of the worm 130, there is a stop part that can stop and abut against the bottom surface of the upper side wall 141 of the support frame 140 when the worm 130 is pulled upward excessively, so as not to cause the worm 130 to detach from the support frame 140, thereby providing a good stopping and limiting effect.

[0078] like Figure 4 As shown, in one embodiment, the mandrel assembly 110 includes a mandrel body 111 and at least two fasteners 112. The mandrel body 111 includes two opposing elongated menisci 1111, which are spaced apart to define a strap groove. At least two fasteners 112 are disposed at both ends of the mandrel body 111, and each fastener 112 is connected to the two menisci 1111.

[0079] By constructing the mandrel body 111 as two spaced-apart elongated menisci 1111, a through groove can be formed between the two elongated menisci 1111, allowing the flexible strap 400 to be wound around the menisci 1111. Two fasteners 112 are used to limit the menisci 1111 to prevent them from detaching from the frame 200.

[0080] like Figure 12 and Figure 13 As shown, in one embodiment, the transmission mechanism 100 further includes a quick-rotor 190, which is fixedly connected to the end of the spindle assembly 110 away from the worm wheel. When the worm 130 disengages from the worm wheel, the quick-rotor 190 can operably drive the spindle assembly 110 to rotate relative to the frame 200.

[0081] Specifically, the quick-rotor 190 has a frame and a groove formed within the frame. The frame has a wall opposite to the second side wall 220 of the frame, and the wall has two first partition holes 191 corresponding to two menisci 1111. The worm gear has two second partition holes. The bottom wall 143 of the support frame 140 has a through hole. The ends of the two menisci 1111 near the first side wall 210 pass through the two second partition holes on the worm gear 120 and the through hole on the support frame 140, and are then fixed by fasteners 112 to prevent the menisci 1111 from detaching from the support frame 140 and the worm gear 120. The ends of the menisci 1111 near the second side wall 220 pass through the first partition holes 191 in the wall of the frame and are secured by another fastener 112 to prevent the spindle body 111 from detaching from the quick-rotor 190.

[0082] like Figure 16 As shown, in one embodiment, the transmission mechanism 100 further includes a wave spring 171, which is sleeved on the spindle body 111 and disposed between the worm gear and the support frame 140. The purpose of providing the wave spring 171 between the worm gear 120 and the support frame 140 is to provide the worm gear with the required elastic force along the axial direction, allowing the worm gear to automatically and elastically adjust its displacement in the axial direction according to the relative position between itself and the teeth of the worm 130. This facilitates the rapid and stable engagement of the teeth of the worm 130 with the worm gear when the worm 130 switches from a disengaged position to an engaged position.

[0083] like Figure 16As shown, in one embodiment, the spindle assembly 110 further includes two bushings 113, which are respectively nested on two opposite sidewalls of the frame 200. Both ends of the spindle body 111 pass through the two bushings 113 and are rotatable relative to the bushings. Specifically, two through holes are provided on the first sidewall 210 and the second sidewall 220 of the frame 200, allowing the spindle body 111 to pass through. The two bushings 113 are nested within the two through holes on the first sidewall 210 and the second sidewall 220, respectively. The shoulders of the two bushings 113 are respectively located on the outer sides of the first sidewall 210 and the second sidewall 220, allowing the spindle body 111 to pass through the pivot sleeves. A gasket 172 is provided between the wall of the quick-connect component 190 and one of the bushings 113. A shim 172 is provided between the wave spring 171 and the worm gear, and between the wave spring 171 and the bottom wall 143 of the support frame 140. The bushing 113 and the shim 172 ensure smooth and stable rotation of the spindle body 111 and the worm gear. Furthermore, the shim 172 between the wave spring 171 and the worm gear can have two positioning micro-holes corresponding to the menisci 1111, allowing the shim 172 to rotate with the worm gear. This results in relative movement between the shim 172 and the wave spring 171, rather than relative rotation between the shim 172 and the worm gear. This also ensures smooth rotation of the worm gear and prevents damage due to friction.

[0084] like Figures 1 to 5 As shown, in one embodiment, the transmission mechanism 100 further includes a hand crank 180, one end of which is fixedly connected to the worm gear 130 to drive the worm gear 130 to rotate around its own axis, thereby linking the worm wheel and spindle assembly 110 to change the length and binding tension of the flexible strap 400.

[0085] Specifically, the hand crank 180 includes a first rod 181 and a second rod 182 connected to each other. One end of the first rod 181 is fixedly connected to the worm gear 130; one end of the second rod 182 is pivotally connected to the other end of the first rod 181; and the handle 183 is connected to the other end of the second rod 182.

[0086] More specifically, one end of the first rod 181 is provided with a U-shaped groove, and the end of the connecting shaft 1311 of the worm gear 130 opposite to the lower shaft section 132 is provided with two parallel planes to engage with the U-shaped groove on the first rod 181. Then, the first rod 181 and the connecting rod are locked together by a nut 1313. The other end of the first rod 181 is pivotally connected to the second rod 182, so that the first rod 181 can rotate relative to the second rod 182. This allows the second rod 182 to be rotated to coincide with the first rod 181 when not in use, thus saving space. The other end of the second rod 182 is pivotally provided with a tubular handle 183 for gripping and rotating. Based on this, the operator can drive the worm gear 130 to rotate by gripping and operating the tubular handle 183. For example, a clockwise rotation from a top-view angle can cause the worm gear 130 in the meshing position to drive the worm teeth and the spindle body 111 to rotate, thereby tightening the flexible strap 400, and a counterclockwise rotation can release the binding tension of the flexible strap 400.

[0087] like Figure 4 As shown, in one embodiment, the frame 200 further includes a baffle 250, which is disposed on the first sidewall 210. The first sidewall 210 and the baffle 250 together define a fixing groove. The fixing groove allows the handle 183 to be inserted and positioned within the fixing groove after the second rod 182 pivots relative to the first rod 181. Specifically, the baffle 250 can be integrally formed with the first sidewall 210. A fixing groove is formed between the baffle 250 and the outer wall surface of the first sidewall 210, allowing the tubular handle 183 on the second rod 182 to be inserted and positioned within the fixing groove after the second rod 182 pivots approximately 180 degrees relative to the first rod 181. This prevents the hand crank 180 from accidentally loosening, causing the flexible strap 400, which is in a tightened state, to uncontrollably loosen.

[0088] The working principle of the tape winding device provided in the embodiments of the present invention is as follows (refer to...). Figures 1 to 17 (Understood)

[0089] The tape reel provides the necessary binding and tightening function for the flexible strap 400 mounted on it. During binding, the hand crank 180 of the tape reel must be pivoted from a retracted state to an unfolded state where it can be rotated. Then, the movable end of the flexible strap 400 is passed through the threading groove of the mandrel body 111, partially wrapped, and pressed down, thereby fixing the movable end of the flexible strap 400 relative to the mandrel body 111. Next, the worm 130 is pulled longitudinally out so that the tooth segment 133 of the worm 130 disengages from the worm gear 120. Since the transmission mechanism 100 formed by the worm 130 and the worm gear 120 is in a non-meshing state at this time, there is no meshing resistance between them. Therefore, the operator can easily rotate the mandrel body 111 by manually operating the quick-turning element 190. For example, by rotating the mandrel body 1111.5 turns clockwise, the flexible strap 400 is properly wound around the mandrel body 111, quickly achieving the initial tightening effect on the object to be bound. Then, the worm 130 is pushed downwards longitudinally, so that the worm 130 meshes with the turbine 120. At this time, it is only necessary to rotate the hand crank 180 a few more turns, for example, 5 or 6 turns, and the flexible strap 400 can achieve the expected tightening effect. After completing the tightening operation, the hand crank 180 is appropriately pivoted and stored in the fixing slot to prevent the flexible strap 400 from uncontrollably loosening.

[0090] As can be seen from the above, the tape winding device of this embodiment can complete the tightening operation by easily and effortlessly rotating the quick-rotator 190, for example, 1.5 turns, and then rotating the hand crank 180 several times, for example, 5 or 6 turns. Compared with the tape winding devices in related technologies that often require rotating the hand crank 180 dozens of times, the tape winding device provided by this embodiment of the invention is relatively simple, fast and effortless in binding and tightening operations.

[0091] Similarly, when the winding device of this embodiment wants to release the flexible strap 400 from the bound and tightened state, it only needs to operate in reverse. For example, first unfold the hand crank 180 from the stored and fixed state to the rotatable state, and then rotate the hand crank 180 several times, for example, 5 or 6 times counterclockwise, so that the binding tension of the flexible strap 400 acts in the opposite direction to the worm 130 through the worm wheel, and the strong meshing force between them is released appropriately. Then, pull the worm 130 upward longitudinally so that the worm 130 disengages from the turbine 120. At this time, the spindle body 111 can be rotated in the opposite direction by rotating the quick-rotor 190 in reverse, for example, 1.5 times, and then the movable end of the flexible strap 400 is pulled outward. Of course, the movable end of the flexible strap 400 can also be pulled outwards without rotating the quick-release component 190, which can quickly achieve the effect of loosening and releasing tension, and removing the movable end 2b of the flexible strap 400 from the spindle body 111.

[0092] Furthermore, when the worm 130 is pushed upward longitudinally due to erroneous operation, the winding device provided in this embodiment of the invention will only cause the worm 130 to move upward, thereby disengaging the worm 130 from the worm wheel 120. This allows the worm 130 and the worm wheel to immediately lose their force transmission effect upon disengagement, resulting in a similar effect of idling. Therefore, it will not cause damage to the worm 130 or other related components, thus providing safe operation and error prevention.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A transmission mechanism for use in a tape winding device, the tape winding device comprising a frame, characterized in that, The transmission mechanism includes: A mandrel assembly is rotatably connected to the frame, and the mandrel assembly allows the movable end of the flexible strap to be inserted and wound for fixation; The worm gear is fixedly connected to the spindle assembly; A worm gear is rotatably connected to the frame and can mesh with the worm wheel to drive the worm wheel to rotate relative to the frame; The worm can also move relative to the frame along its own axis to disengage the worm from the worm wheel. The transmission mechanism further includes a support frame, which has an upper side wall and a lower side wall arranged opposite to each other, and a bottom wall connected to the upper side wall and the lower side wall. One end of the upper side wall and the lower side wall away from the bottom wall is fixedly connected to the outer side wall of the frame, and one end of the bottom wall is rotatably connected to the spindle assembly. The upper sidewall, the bottom wall, and the lower sidewall enclose and define an accommodating space. The worm passes through the upper sidewall and the lower sidewall and is partially disposed within the accommodating space. The upper sidewall can limit the worm when it disengages from the worm wheel. The worm gear includes: The upper shaft section is sleeved on the upper side wall; The lower shaft section is sleeved on the lower side wall; A toothed segment is disposed between the upper shaft segment and the lower shaft segment and is connected to the upper shaft segment and the lower shaft segment. The toothed segment is provided with a plurality of teeth for meshing with the worm gear. When the worm moves back and forth along its own axis, the tooth segment can switch between being engaged with and disengaged from the worm wheel; The upper shaft section is provided with a limiting groove; the transmission mechanism further includes: A cover, detachably connected to the frame, and enclosing the worm gear, support frame, tooth segment, and a portion of the upper and lower shaft segments; A limiting snap ring is provided on the cover. When the worm moves to the point where the tooth segment disengages from the worm wheel, one end of the limiting snap ring can be engaged in the limiting groove. A retaining spring groove is provided on the inner side of the cover, and the retaining spring groove has an installation opening facing the first side wall of the frame; the limiting retaining spring is Z-shaped and can be inserted into and positioned in the retaining spring groove through the installation opening; The position where the limiting spring engages with the limiting groove forms an arc-shaped groove, so that when the limiting spring is elastically engaged and positioned in the limiting ring groove, the arc-shaped groove can fit against the side wall of the upper bushing. A square retaining spring groove is provided on the upper inner side wall of the cover, and an clearance hole is provided on the upper side wall of the cover to allow the upper shaft section of the worm to pass through. The retaining spring is provided in an arc-shaped groove in the clearance hole to facilitate its cooperation with the worm.

2. The transmission mechanism according to claim 1, characterized in that, The mandrel assembly includes: The mandrel body includes two opposing elongated menisci, which are spaced apart to define a threading groove. At least two fasteners are provided at both ends of the mandrel body, and each fastener is connected to both menisci.

3. The transmission mechanism according to claim 2, characterized in that, The transmission mechanism also includes a wave spring, which is sleeved on the spindle body and located between the worm gear and the support frame.

4. The transmission mechanism according to claim 2, characterized in that, The mandrel assembly also includes two bushings, which are respectively nested on two opposite side walls of the frame. Both ends of the mandrel body pass through the two bushings and can rotate relative to the bushings.

5. The transmission mechanism according to claim 1, characterized in that, The transmission mechanism also includes: A hand crank, one end of which is fixedly connected to the worm gear, drives the worm gear to rotate around its own axis, thereby linking the worm wheel and the spindle assembly to change the length and binding tension of the flexible strap.

6. The transmission mechanism according to claim 5, characterized in that, The hand crank includes interconnected components: The first member has one end fixedly connected to the worm gear; The second member is pivotally connected at one end to the other end of the first member; The handle is connected to the other end of the second rod.

7. The transmission mechanism according to claim 6, characterized in that, The framework includes: The first sidewall, wherein the worm gear and the worm are disposed on the outer side of the first sidewall; A baffle is provided on the first side wall. The first side wall and the baffle together enclose and define a fixing groove. The fixing groove allows the handle to be inserted and positioned in the fixing groove after the second rod is pivoted relative to the first rod.

8. The transmission mechanism according to any one of claims 1-7, characterized in that, The transmission mechanism also includes a quick-rotor component, which is fixedly connected to the end of the spindle assembly opposite to the worm wheel. When the worm disengages from the worm wheel, the quick-rotor component can operably drive the spindle assembly to rotate relative to the frame.

9. A tape winding device, characterized in that, The tape winding device includes the transmission mechanism as described in any one of claims 1-8.

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