Cam type speed change device and kite wheel and fishing reel applying speed change device

Abstract

The utility model provides a cam type speed changing device and kite wheel and fishing reel using the speed changing device, and relates to the technical field of speed changing, the cam type speed changing device comprises a cam shaft, a shaft sleeve and a gear shifting driving mechanism, a plurality of cams are evenly distributed on the circumferential face of the cam shaft in the axial direction, the included angle between the radial symmetry axes of all the cams is zero, the shaft sleeve is arranged on the cam shaft in a sleeving mode, and the gear shifting driving mechanism is arranged on the shaft sleeve. A plurality of arc-shaped grooves are evenly distributed in the circumferential face of the shaft sleeve in the axial direction, an included angle is formed between the radial symmetry axes of every two adjacent arc-shaped grooves, each gear shifting claw is hinged to the interior of the corresponding arc-shaped groove, one end of each gear shifting claw is a limiting part, the inner side of each limiting part is an abutting end matched with the cam, and the outer side of each limiting part is a gear clutch end. The cam shaft is rotated to enable the cam to eject the corresponding gear shifting claw for gear shifting, and compared with an existing speed change device, the cam ejection mode is more reliable and stable, gear shifting is quicker and smoother, and the situation of gear shifting lagging is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of speed change, in particular to a cam type speed change device and a kite reel and a fishing reel using the speed change device. Background Art

[0002] Kite flying and fishing are widely loved as leisure and entertainment activities. During kite flying, it is necessary not only to quickly tighten the kite line when it is loose to prevent the kite from falling quickly, but also to quickly pay out the kite line when it is taut to prevent the kite line from breaking under stress. The same is true for fishing, which requires a speed change device to be installed on the kite wheel and fishing reel. Existing speed change devices have problems such as speed jamming, inability to shift smoothly, and poor reliability.

[0003] Therefore, there is a need for a cam type speed change device that solves the above problems and a kite reel and a fishing reel using the speed change device. Utility Model Content

[0004] The utility model proposes a cam-type speed change device and a kite reel and a fishing reel using the speed change device. The camshaft is rotated to cause the cam to push out the corresponding shift claw to perform gear shifting. Compared with the existing speed change device, the cam pushing-out method is more reliable and stable, the gear shifting is faster and smoother, and the occurrence of gear shifting jamming is reduced.

[0005] A technical solution of the present invention is achieved as follows:

[0006] Cam type speed change device, comprising:

[0007] A camshaft, wherein a plurality of cams are evenly distributed along the axial direction on the circumference of the camshaft, and the angle between the radially symmetrical axes of all the cams is zero;

[0008] A shaft sleeve, the shaft sleeve being sleeved on the camshaft, the circumference of the shaft sleeve being uniformly provided with a plurality of arcuate grooves along the axial direction, an angle being provided between the radial symmetry axes of two adjacent arcuate grooves, and the arcuate grooves corresponding to the cams one-to-one;

[0009] The shift drive mechanism includes a plurality of shift claws, each of which is hingedly mounted in the corresponding arc-shaped groove, one end of the shift claw is a limiting portion, the inner side of the limiting portion is a supporting end adapted to the cam, and the outer side of the limiting portion is a gear clutch end, and a reset element is provided between each shift claw and the shaft sleeve.

[0010] As a preferred technical solution, the shift drive mechanism also includes a plurality of shift gears sleeved on the shaft sleeve, the shift gears corresponding one-to-one to the arc-shaped grooves, and a plurality of key slots for engaging with or separating from the gear clutch end are provided on the inner circumference of the shift gear. When one of the gear clutch ends is engaged with the key slot corresponding to the shift gear, the remaining gear clutch ends are separated from the key slots corresponding to the shift gear.

[0011] As a preferred technical solution, the shift drive mechanism also includes a plurality of balls, each of the arc-shaped grooves is provided with a through hole in the radial direction, each of the balls is installed in the corresponding through hole, and each of the balls is adapted to the corresponding cam and the corresponding supporting end.

[0012] As a preferred technical solution, the cams are all groove cams, and the groove cams are all lower than the outer peripheral surface of the camshaft.

[0013] As a preferred technical solution, the shift claw is installed in the corresponding arc-shaped groove through an articulated shaft, the other end of the shift claw is a reset end, the reset end and the limit part are respectively arranged on both sides of the articulated shaft, the reset element is arranged between the reset end and the arc-shaped groove, and each of the articulated shafts is arranged parallel to the camshaft.

[0014] As a preferred technical solution, a ball limiting groove is provided at the top end of each cam.

[0015] The second technical solution of the present invention is achieved as follows:

[0016] The kite wheel comprises the cam type speed changing device.

[0017] The third technical solution of the present invention is achieved in this way:

[0018] A fishing reel comprises the cam type speed changing device.

[0019] By adopting the above technical solution, the beneficial effects of the utility model are:

[0020] Since the cam-type speed change device includes a camshaft, a shaft sleeve and a shift drive mechanism, when using this device, by rotating the camshaft, the limiting portions of different shift claws are pushed out from the corresponding arc-shaped grooves under the pressure of the corresponding cam, thereby realizing gear shifting. The utility model realizes the extension of the upper limiting portions of different shift claws through the pressure of the cam. Compared with the existing speed change device that uses a spring to push out the brake pad, the cam ejection method is more reliable and stable, and reduces the occurrence of speed change failure caused by failure of the compression spring.

[0021] Since the gear shift drive mechanism also includes a plurality of shift gears, by rotating the camshaft, shift gears of different specifications are selected to engage with the gear clutch end of the corresponding shift claw, thereby realizing speed change. The speed regulating shaft in the existing device can only rotate in one direction and cannot reverse the gear position. In the new type of device, the camshaft is not blocked by the shift claw and can rotate in both directions, so that the speed change device can reverse the gear position, making the speed gear position adjustment faster.

[0022] In the present invention, the arrangement of the ball can make point contact between the cam, the ball and the shift claw, so that wear is small, lubrication is easy, shifting is smooth, and the reliability and durability of the speed change device are improved.

[0023] In the present invention, the provision of the ball limiting groove can limit the ball located at the top end of the cam, so that the combination of the shift claw and the corresponding shift gear is more stable, thereby improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 It is a structural diagram of the utility model;

[0026] Figure 2 A reference diagram of a state where one of the shift dogs is engaged with the corresponding shift gear;

[0027] Figure 3 A reference diagram of the state when another shift dog is separated from the corresponding shift gear;

[0028] Figure 4 Schematic diagram of the camshaft structure.

[0029] Figure 5 Schematic diagram of the structure of the shaft sleeve;

[0030] Figure 6 Schematic diagram of the structure of one of the shift claws.

[0031] Among them: 1. camshaft; 2. cam; 3. bushing; 4. arc-shaped groove; 5. shift claw; 6. limit part; 7. support end; 8. gear clutch end; 9. compression spring; 10. shift gear; 11. keyway; 12. ball; 13. through hole; 14. hinge shaft; 15. reset end; 16. ball limit groove; 17. radial symmetry axis of cam; 18. radial symmetry axis of arc-shaped groove. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Example 1:

[0034] like Figures 1-6 The cam type speed change device comprises:

[0035] The camshaft 1 has a plurality of cams 2 evenly distributed along the axial direction on its circumference, and the angles between the radially symmetrical axes of all the cams 2 are zero.

[0036] The sleeve 3 is sleeved on the camshaft 1 , and a plurality of arcuate grooves 4 are evenly distributed along the axial direction on the circumference of the sleeve 3 , and an angle is set between the radial symmetry axes of two adjacent arcuate grooves 4 , and the arcuate grooves 4 correspond to the cams 2 one by one.

[0037] like Figure 2 and Figure 3 As shown together, the shift drive mechanism includes a plurality of shift claws 5, each of which is hingedly mounted in a corresponding arc-shaped groove 4, one end of the shift claw 5 is a limiting portion 6, the inner side of the limiting portion 6 is a supporting end 7 adapted to the cam 2, and the outer side of the limiting portion 6 is a gear clutch end 8, and a reset element is provided between each shift claw 5 and the sleeve 3.

[0038] The shift drive mechanism also includes a plurality of shift gears 10 sleeved on the shaft sleeve 3. The shift gears 10 correspond one-to-one to the arc-shaped grooves 4. The inner circumference of the shift gear 10 is provided with a plurality of key slots 11 for engaging with or separating from the gear clutch end 8. When a gear clutch end 8 is engaged with the key slot 11 of the corresponding shift gear 10, the remaining gear clutch ends 8 are separated from the key slots 11 of the corresponding shift gear 10.

[0039] The shift drive mechanism further includes a plurality of balls 12 . A through hole 13 is radially provided in each arcuate groove 4 . Each ball 12 is installed in a corresponding through hole 13 . Each ball 12 is matched with a corresponding cam 2 and a corresponding supporting end 7 .

[0040] like Figure 4 As shown, the cams 2 are all groove cams, and the groove cams are all lower than the outer peripheral surface of the camshaft 1.

[0041] The shift claw 5 is installed in the corresponding arc-shaped groove 4 through an articulated shaft 14. The other end of the shift claw 5 is a reset end 15. The reset end 15 and the limit portion 6 are respectively arranged on both sides of the articulated shaft 14. The reset element is arranged between the reset end 15 and the arc-shaped groove 4. Each articulated shaft 14 is arranged parallel to the camshaft 1. In the utility model, the reset element includes a compression spring 9.

[0042] A ball limiting groove 16 is provided at the top end of each cam 2 .

[0043] The diameters of the shifting gears 10 vary.

[0044] A sleeve is sleeved on the shaft sleeve 3 for axially positioning the two shift gears 10 , and the sleeve is not marked in the figure.

[0045] Example 2:

[0046] The kite wheel includes the cam type speed change device in the first embodiment.

[0047] Example 3:

[0048] A fishing reel includes the cam-type speed change device in the first embodiment.

[0049] In summary, the present invention rotates the camshaft to cause the cam to push out the corresponding shift claw to shift gears. Compared with the existing speed change device, the cam pushing out method is more reliable and stable, the shifting is faster and smoother, and the occurrence of shifting jams is reduced.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Cam type speed change device, characterized in that: include: A camshaft, wherein a plurality of cams are evenly distributed along the axial direction on the circumference of the camshaft, and the angle between the radially symmetrical axes of all the cams is zero; A shaft sleeve, the shaft sleeve being sleeved on the camshaft, the circumference of the shaft sleeve being uniformly provided with a plurality of arcuate grooves along the axial direction, an angle being provided between the radial symmetry axes of two adjacent arcuate grooves, and the arcuate grooves corresponding to the cams one-to-one; The shift drive mechanism includes a plurality of shift claws, each of which is hingedly mounted in the corresponding arc-shaped groove, one end of the shift claw is a limiting portion, the inner side of the limiting portion is a supporting end adapted to the cam, and the outer side of the limiting portion is a gear clutch end, and a reset element is provided between each shift claw and the shaft sleeve.

2. The cam type speed change device according to claim 1, characterized in that: The shift drive mechanism also includes a plurality of shift gears sleeved on the shaft sleeve, the shift gears corresponding to the arc-shaped grooves one by one, and a plurality of key slots for engaging with or separating from the gear clutch end are provided on the inner circumference of the shift gear. When one of the gear clutch ends is engaged with the key slot corresponding to the shift gear, the remaining gear clutch ends are separated from the key slots corresponding to the shift gear.

3. The cam type speed change device according to claim 1, wherein: The shift drive mechanism further includes a plurality of balls. A through hole is radially provided in each of the arc-shaped grooves. Each of the balls is installed in the corresponding through hole. Each of the balls is adapted to the corresponding cam and the corresponding supporting end.

4. The cam type speed change device according to claim 1, wherein: The cams are all groove cams, and the groove cams are all lower than the outer peripheral surface of the camshaft.

5. The cam type speed change device according to claim 1, wherein: The shift claw is installed in the corresponding arc-shaped groove through an articulated shaft. The other end of the shift claw is a reset end. The reset end and the limit part are respectively arranged on both sides of the articulated shaft. The reset element is arranged between the reset end and the arc-shaped groove. Each articulated shaft is arranged parallel to the camshaft.

6. The cam type speed change device according to claim 1, wherein: The top end of each cam is provided with a ball limiting groove.

7. Kite wheel, characterized in that, It comprises a cam type speed change device as described in any one of claims 1-6.

8. A fishing reel, characterized in that: It comprises a cam type speed change device as described in any one of claims 1-6.

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