Speed change device for kite wheel and kite wheel

Abstract

The utility model belongs to the technical field of kite wheels, and particularly relates to a speed change device for a kite wheel, which comprises a box body, a driving shaft and a driven shaft are rotatably arranged in the box body in parallel, more than two driving gears are fixedly mounted on the driving shaft, and more than two driven gears are circumferentially fixed and axially slidably mounted on the driven shaft. The driving gear is meshed with the driven gear; a gear shifting rotary disc is rotationally installed on the box body and connected with a gear shifting rocker arm, the gear shifting rocker arm is rotationally connected with a gear shifting fork, the gear shifting fork is arranged away from the gear shifting rotary disc and matched with the driven gear, a torsion spring is arranged between the gear shifting rotary disc and the gear shifting rocker arm, one end of the torsion spring is connected with the gear shifting rotary disc, and the other end of the torsion spring is connected with the gear shifting rocker arm. When the gear shifting rotary table is rotated, the torsion spring generates elastic torsion and drives the gear shifting rocker arm and the gear shifting fork to rotate, then the driven gear is driven to axially move, and the torsion spring enables the driven gear to be smoothly meshed with the driving gear.

Description

Technical Field

[0001] This utility model belongs to the field of kite wheel technology, specifically relating to a speed-changing device for kite wheels and a kite wheel. Background Technology

[0002] Kite flying is a popular leisure activity. During kite flying, the kite reel is a crucial component, typically consisting of a rotating support and a reel on which the kite line is wound. Rotating the reel controls the release and reeling in the kite. In strong winds, ordinary kite reels experience significant rotational resistance when reeling in the line; conversely, in calmer winds, the slow reeling speed leads to tangled and knotted kite lines, negatively impacting the user experience.

[0003] Existing technologies have proposed various solutions for kite reels capable of variable speeds. For example, utility model patent CN206965137 U discloses a gearbox for kite reels and a kite reel, including a housing. An input shaft and an output shaft are rotatably mounted within the housing. One or more drive gears are fixedly mounted on the input shaft, and one or more driven gears are circumferentially fixed and axially slidably mounted on the output shaft. The drive gears and driven gears mesh with each other. A shift fork shaft is rotatably mounted on the housing near the output shaft. One end of the shift fork shaft inside the housing is connected to a shift fork for sliding the driven gears, and the other end outside the housing is connected to a lever. The gearbox for kite reels provided by this utility model allows adjustment of the driven gear and drive gear at a suitable gear ratio by using a lever, thereby reducing the effort required to retrieve the line and increasing the speed of line retrieval and release.

[0004] However, in the existing technology, when adjusting the gear, the driving gear and the driven gear may not mesh accurately, so it is necessary to improve this technical problem. Utility Model Content

[0005] The purpose of this invention is to provide a kite reel gear shifting device and kite reel that can smoothly shift gears, so as to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:

[0007] A speed-changing device for a kite reel includes a housing. Inside the housing, a drive shaft and a driven shaft are rotatably and parallelly arranged. Two or more drive gears are fixedly installed on the drive shaft, and two or more driven gears are circumferentially fixed and axially slidably installed on the driven shaft. The drive gears and driven gears mesh with each other.

[0008] A shift dial is rotatably mounted on the gearbox. The shift dial is connected to a shift rocker arm, and the shift rocker arm is rotatably connected to a shift fork. The shift fork is positioned away from the shift dial and engages with the driven gear. A torsion spring is provided between the shift dial and the shift rocker arm. One end of the torsion spring is connected to the shift dial, and the other end is connected to the shift rocker arm. When the shift dial is rotated, the torsion spring undergoes elastic torsion, which drives the shift rocker arm and the shift fork to rotate, thereby driving the driven gear to move axially.

[0009] As a further improvement, multiple driving gears are spaced apart, and multiple driven gears are fixedly connected.

[0010] As a further improvement, the end face of the shift fork away from the shift rocker arm is provided with a groove, which engages with the driven gear with the largest diameter.

[0011] As a further improvement, a blind hole structure is provided on the circumferential side of the shift rocker arm or the circumferential side of the shift dial. A first spring is provided in the blind hole of the blind hole structure. One end of the first spring abuts against the end face of the blind hole, and the other end is provided with a first ball. Multiple grooves are provided at intervals on the inner side wall of the housing at positions corresponding to the gear position, and the first ball cooperates with the grooves.

[0012] A kite reel includes a spool and a handle. The spool has a spool shaft and a mounting base that can be detachably installed on the spool. The mounting base is equipped with a speed-changing device. The driven shaft of the speed-changing device is connected to the spool shaft, and the driving shaft of the speed-changing device is connected to a crank handle. A brake disc is fixedly installed on the spool. The outer edge of the brake disc is provided with a one-way ratchet. A pawl is rotatably installed on the mounting base, and the pawl engages with the ratchet.

[0013] As a further improvement, the mounting base is provided with a groove, in which an anti-reverse rocker arm is installed. One end of the anti-reverse rocker arm is fixedly connected to a pawl and rotatably connected to the mounting base via a pivot. The other end of the anti-reverse rocker arm is rotatably connected to a pull rod. The handle is provided with a sliding groove, in which the pull rod is slidably connected.

[0014] As a further improvement, a mounting hole is provided on the inner side wall of the groove, and a second spring is installed in the mounting hole. One end of the second spring abuts against the end face of the mounting hole, and the other end of the second spring is provided with a second ball. The second ball abuts against the end of the anti-reverse rocker arm away from the pawl.

[0015] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0016] This utility model provides a gear transmission device for kite wheels and a kite wheel. A torsion spring is set between the gear shifting turntable and the gear shifting rocker arm of the gear transmission device, so that when the gear shifting turntable is rotated, the torsion spring undergoes elastic torsion, and the interaction between the two is buffered to a certain extent, thereby enabling the driven gear to smoothly mesh with the driving gear.

[0017] By setting a brake wheel and a ratchet, the spool can be made to rotate only in the direction of reeling in when there is no need to let out line or to slowly reel in line.

[0018] By incorporating a detachable coil, the gear shifter can be easily used with different coils, facilitating disassembly, replacement, and maintenance, and also helps reduce operating costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the speed change device of this utility model;

[0021] Figure 3 This is an assembly cross-sectional view of the first spring and the first ball of this utility model;

[0022] Figure 4 This is a schematic diagram of the brake disc and ratchet of this utility model;

[0023] Figure 5 This is an assembly sectional view of the novel anti-reverse rocker arm.

[0024] Wherein: 1-Transmission device, 101-Box body, 102-Drive shaft, 103-Driven shaft, 104-Drive gear, 105-Driven gear, 106-Shift dial, 107-Shift rocker arm, 108-Shift fork, 109-Torsion spring, 110-First spring, 111-First ball bearing, 2-Kite wheel, 201-Handle, 202-Mounting base, 203-Brake disc, 204-Pawl, 205-Anti-reverse rocker arm, 206-Pull rod, 207-Second spring, 208-Second ball bearing. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. The accompanying drawings are for illustrative purposes only, representing schematic diagrams only, not actual physical images, and should not be construed as limiting the scope of this application. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art.

[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] like Figure 1-5 As shown, a kite reel transmission device 1 includes a housing 101. Inside the housing 101, a drive shaft 102 and a driven shaft 103 are rotatably parallel to each other. Two or more drive gears 104 are fixedly installed on the drive shaft 102. Two or more driven gears 105 are circumferentially fixed and axially slidably installed on the driven shaft 103. The drive gears 104 and driven gears 105 are meshed together.

[0028] A shift turntable 106 is rotatably mounted on the housing 101. The shift turntable 106 is connected to a shift rocker arm 107, and the shift rocker arm 107 is rotatably connected to a shift fork 108. The shift fork 108 is positioned away from the shift turntable 106 and engages with the driven gear 105. A torsion spring 109 is provided between the shift turntable 106 and the shift rocker arm 107. One end of the torsion spring 109 is connected to the shift turntable 106, and the other end is connected to the shift rocker arm 107. When the shift turntable 106 is rotated, the torsion spring 109 undergoes elastic torsion, causing the shift rocker arm 107 and the shift fork 108 to rotate, which in turn causes the driven gear 105 to move axially. The torsion spring 109 provides a certain buffer for the interaction between the shift rocker arm 107 and the shift turntable 106, thereby enabling the driven gear 105 to mesh more smoothly with the driving gear 104.

[0029] Rotating the shift turntable 106 adjusts the position of the driven gear 105 via the shift rocker arm 107 and the shift fork 108, thereby changing the transmission ratio between the driven gear 105 and the driving gear 104, ultimately achieving the purpose of shifting gears.

[0030] Specifically, turning the shift dial 106 causes the torsion spring 109 to rotate, which in turn causes the shift rocker arm 107 to rotate. The rotation of the rocker arm 107 causes the shift fork 108 to rotate along the axis of the shift dial 106. While rotating around the axis of the shift dial 106, the shift fork 108 also rotates on its own axis. This rotation of the shift fork 108 along the axis of the shift dial 106 further drives the driven gear 105 to move axially along the driven shaft 103. When the shift dial 106 reaches the gear position, the shift fork 108 drives the driven gear 105 to the corresponding position of the driving gear 104. At this point, two scenarios can occur: first, the driving gear 104 and the driven gear 105 mesh smoothly, achieving gear shifting. In the first scenario, the torsion spring 109 releases its elastic force. In the second scenario, the tooth end face of the driven gear 105 abuts against the tooth end face of the driving gear 104, causing them to fail to mesh smoothly. In this case, the torsion spring 109 still has elastic force that has not been released, and it still exerts a torsional force on the shift rocker arm 107. This torsional force will cause the shift rocker arm 107 to drive the driven gear 105 to continue moving axially toward the driving gear 104. As the winding and unwinding process proceeds, the driving gear 104 continues to rotate. When the teeth of the two gears are misaligned, the shift rocker arm 107 rotates under the action of the torsional force of the torsion spring 109 and drives the driven gear 105 to move to the position where it is fully engaged with the driving gear 104, completing the shift. At this time, the torsional elastic force of the torsion spring 109 is completely released and disappears.

[0031] In this embodiment, multiple driving gears 104 are spaced apart, and multiple driven gears 105 are fixedly connected. When the driven gears 105 move axially, at most one set of driven gears 105 meshes with the driving gears 104. Each set of meshing driving gears 104 and driven gears 105 has a different transmission ratio, corresponding to different gears. Specifically, there are three driving gears 104 and three driven gears 105. A transmission ratio less than 1 corresponds to a high-speed gear, which can quickly release the line; a transmission ratio equal to 1 corresponds to a medium-speed gear; a transmission ratio greater than 1 corresponds to a low-speed gear, which is more labor-saving when reeling in the line; when the driving gears 104 and driven gears 105 are not in contact, it is in neutral.

[0032] In this embodiment, the end face of the shift fork 108 away from the shift rocker arm 107 is provided with a groove, which engages with the driven gear 105 with the largest diameter.

[0033] In this embodiment, a blind hole structure is provided on the circumferential side surface of the shift rocker arm 107 or the circumferential side surface of the shift turntable 106. Specifically, the blind hole structure includes blind holes, which can be formed by the inward indentation of the circumferential side wall of the shift rocker arm 107 or the shift turntable 106, or by the outward protrusion of the circumferential side wall of the shift rocker arm 107 or the shift turntable 106 with blind holes provided in the protruding parts. A first spring 110 is provided in the blind hole of the blind hole structure. One end of the first spring 110 abuts against the end face of the blind hole, and the other end is provided with a first ball bearing 111. Multiple grooves are provided at intervals on the inner side wall of the housing 1 at positions corresponding to the gear positions. The first ball bearing 111 cooperates with the grooves. When the shift turntable 106 is rotated, the first ball bearing 111 cooperates with the grooves corresponding to different gear positions to prevent the shift turntable 106 from rotating arbitrarily.

[0034] This utility model also provides a kite reel 2, including a spool and a handle 201. The spool is provided with a spool shaft. The spool is detachably mounted with a mounting base 202. The mounting base 202 is equipped with a speed change device 1. The driven shaft 103 of the speed change device 1 is connected to the spool shaft. The drive shaft 102 of the speed change device 1 is connected to a crank handle. A brake disc 203 is fixedly mounted on the spool. The outer edge of the circumference of the brake disc 203 is provided with a one-way ratchet. A pawl 204 is rotatably mounted on the mounting base 202. The pawl 204 engages with the ratchet.

[0035] In this embodiment, a groove is provided on the mounting base 202, and an anti-reverse rocker arm 205 is installed in the groove. One end of the anti-reverse rocker arm 205 is fixedly connected to the pawl 204 and rotatably connected to the mounting base 202 through a rotating shaft. The other end of the anti-reverse rocker arm 205 is rotatably connected to a pull rod 206. A sliding groove is provided on the handle 201, and the pull rod 206 is slidably connected in the sliding groove.

[0036] In this embodiment, a mounting hole is provided on the inner sidewall of the groove, and a second spring 207 is installed in the mounting hole. One end of the second spring 207 abuts against the end face of the mounting hole, and the other end of the second spring 207 is provided with a second ball 208. The second ball 208 abuts against the end of the anti-reverse rocker arm 205 away from the pawl 204. The pull rod 206 slides to drive the anti-reverse rocker arm 205 to rotate around the axis. When the center line of the anti-reverse rocker arm 205 in the length direction is located on one side of the line connecting the center of its axis of rotation and the center of the second ball 208, the pawl 204 is in contact with the brake disc 203, and the brake disc 203 can only rotate in the direction of reeling in the line; when the center line of the anti-reverse rocker arm 205 in the length direction is located on the other side of the line connecting the center of its axis of rotation and the center of the second ball 208, the pawl 204 is not in contact with the brake disc 203, and the brake disc 203 can rotate in both the direction of reeling in the line and the direction of unellowing the line.

[0037] In this embodiment, by adjusting the gear on the transmission device 1, one can achieve fast or effortless line reeling. Specific operations are as follows: In light winds or when the kite is falling rapidly, the high-speed gear allows for quick line reeling, preventing tangling and knots due to delayed reeling; in strong winds, the low-speed gear provides greater torque, making line reeling easier and less strenuous; when continuously and rapidly releasing line, the neutral gear is used, eliminating the need to manually turn the crank of the transmission device 1, allowing the reel to rotate automatically and preventing injury from excessively fast cranking; when no line release is needed or when reeling in slowly, by controlling the sliding of the lever 206, the pawl 204 engages with the ratchet teeth of the brake disc 203, allowing the reel to rotate only in the reeling direction.

[0038] Because the reel is detachable, it is convenient for users to maintain and repair it. During use, users can also change to different styles of reels according to their preferences without having to replace the entire kite reel, thus saving on operating costs.

[0039] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A gearbox for kite reels, comprising a housing, characterized in that, The housing is provided with a drive shaft and a driven shaft that rotate parallel to each other. Two or more drive gears are fixedly installed on the drive shaft. Two or more driven gears are fixed circumferentially and slidably installed axially on the driven shaft. The drive gears and driven gears mesh with each other. A shift dial is rotatably mounted on the housing. The shift dial is connected to a shift rocker arm, and the shift rocker arm is rotatably connected to a shift fork. The shift fork is positioned away from the shift dial and engages with the driven gear. A torsion spring is provided between the shift dial and the shift rocker arm. One end of the torsion spring is connected to the shift dial, and the other end is connected to the shift rocker arm. When the shift dial is rotated, the torsion spring undergoes elastic torsion, causing the shift rocker arm and the shift fork to rotate, thereby causing the driven gear to move axially.

2. The speed-changing device for a kite reel according to claim 1, characterized in that, The multiple driving gears are spaced apart, and the multiple driven gears are fixedly connected to each other.

3. The speed-changing device for a kite reel according to claim 1, characterized in that, The shift fork has a slot on one end face away from the shift rocker arm, and the slot engages with the driven gear with the largest diameter.

4. A speed-changing device for a kite reel according to claim 1, characterized in that, The shift rocker arm or the shift dial has a blind hole structure on its circumferential side. A first spring is installed in the blind hole of the blind hole structure. One end of the first spring abuts against the end face of the blind hole, and the other end is provided with a first ball. Multiple grooves are provided at intervals on the inner side wall of the housing at positions corresponding to the gear position. The first ball cooperates with the grooves.

5. A kite reel, characterized in that, The device includes a spool and a handle. The spool has a spool shaft and a mounting base that can be detachably installed on the spool. The mounting base is equipped with a speed-changing device as described in any one of claims 1 to 4. The driven shaft of the speed-changing device is connected to the spool shaft, and the driving shaft of the speed-changing device is connected to a crank handle. A brake disc is fixedly installed on the spool. The outer circumference of the brake disc is provided with a one-way ratchet. A pawl is rotatably installed on the mounting base, and the pawl engages with the ratchet.

6. The kite reel according to claim 5, characterized in that, The mounting base has a groove, in which an anti-reverse rocker arm is installed. One end of the anti-reverse rocker arm is fixedly connected to the pawl and rotatably connected to the mounting base via a pivot. The other end of the anti-reverse rocker arm is rotatably connected to a pull rod. The handle has a sliding groove, in which the pull rod is slidably connected.

7. The kite reel according to claim 6, characterized in that, The inner wall of the groove is provided with a mounting hole, and a second spring is installed in the mounting hole. One end of the second spring abuts against the end face of the mounting hole, and the other end of the second spring is provided with a second ball. The second ball abuts against the end of the anti-reverse rocker arm away from the pawl.

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