US20240124113A1

US20240124113A1 - Detachable paddle

Info

Publication number: US20240124113A1
Application number: US18/394,341
Authority: US
Inventors: Peng Liu
Original assignee: Weihai Winner Innovation Ocean Technology Co Ltd
Current assignee: Weihai Winner Innovation Ocean Technology Co Ltd
Priority date: 2021-06-25
Filing date: 2023-12-22
Publication date: 2024-04-18
Also published as: WO2022267166A1; DE112021007888T5; CA3224142A1; CN215884036U

Abstract

Disclosed is a detachable paddle comprising a main paddle rod, a first detachable paddle rod, a second detachable paddle rod, a paddle blade part and a paddle handle part, wherein the main paddle rod is connected to the first detachable paddle rod through a first connecting part, and the main paddle rod is connected to the second detachable paddle rod through a second connecting part. The main paddle rod is a hollow rod with a water drop-shaped cross section and a certain wall thickness, and the first and second detachable paddle rods are hollow rods with the same cross section shape as the main paddle rod and a certain wall thickness; and the first connecting part comprises a closed lantern ring for connecting the main paddle rod, a fastening device for fastening the first detachable paddle rod, and a limiting device for limiting the first detachable paddle rod.

Description

CROSS REFERENCE TO RELATED APPLICATION

The present disclosure is a continuation application of PCT Application Serial No. PCT/CN2021/108710, filed on Jul. 27, 2021, which claims the priority to a Chinese Application No. 202121427713.8, filed on Jun. 25, 2021, the contents of all of which are incorporated herein by reference in their entirety.

TECHNICAL FIELD

The present invention relates to the technical field of paddles, and in particular, to a detachable paddle.

BACKGROUND

A paddle is an important tool for driving a variety of small surface boats. In order to facilitate carrying of a paddle, various detachable paddles have been designed. However, the various existing detachable paddles have the following problems: the detachable paddle rods have a circular cross section, and elastic bumps and limiting holes are used for limiting, such that relative rotation, shaking and other phenomena often occur between the paddle rods; some other detachable paddles adopt a closed end design at a fixed end to realize fastening, which increases the difficulty in manufacturing; the paddle blade and the paddle rod are fixedly connected, and cannot be replaced individually after being damaged; and the paddle rod with a circular cross section has the tendency to slide when being held.

SUMMARY

The present utility model aims to provide a detachable paddle that can realize a good anti-rotation, fastening and limiting effect, has a good holding feel and anti-skid effect, and can be changed from a single-blade paddle into a double-blade paddle.
Embodiments of the present utility model can be implemented by the following technical solutions.
A detachable paddle includes a main paddle rod, a first detachable paddle rod, a second detachable paddle rod, a paddle blade part and a paddle handle part, where the main paddle rod is connected to the first detachable paddle rod through a first connecting part, and the main paddle rod is connected to the second detachable paddle rod through a second connecting part; the main paddle rod is a hollow rod with a water drop-shaped cross section and a certain wall thickness, and the first detachable paddle rod and the second detachable paddle rod are hollow rods with the same cross section as the main paddle rod and a certain wall thickness; radial circumferences of outer walls of the first detachable paddle rod and the second detachable paddle rod are slightly smaller than that of an inner wall of the main paddle rod, and the first detachable paddle rod and the second detachable paddle rod are able to enter the main paddle rod and fit the inner wall of the main paddle rod to move axially along the main paddle rod; the first connecting part includes a closed lantern ring for connecting the main paddle rod, a fastening device for fastening the first detachable paddle rod, and a limiting device for limiting the first detachable paddle rod; and the closed lantern ring is fixedly connected to an outer edge of one end that is of the main paddle rod and that faces the first detachable paddle rod.
Further, the fastening device includes a non-closed lantern ring, and at least a part of the non-closed lantern ring is connected to the closed lantern ring into a whole.
Further, the fastening device includes a first protruding part and a second protruding part that are positioned at two sides of a slit of the non-closed lantern ring, and the first protruding part and the second protruding part are provided with a screw hole for a screw rod to pass through.
Further, the first connecting part includes a fastening and limiting piece; and

- the fastening device further includes a first cam-shaped bulge and a second cam-shaped bulge that are provided on one end of the fastening and limiting piece at an interval, the interval between the first cam-shaped bulge and the second cam-shaped bulge is configured to accommodate a screw head of a fastening screw, and the first cam-shaped bulge, the second cam-shaped bulge, and the screw head of the fastening screw are all provided with a rotating shaft hole for a rotating shaft to pass through.

Preferably, a groove (634) is provided at an edge of one end that is of the fastening and limiting piece (63) and that is far away from the first cam-shaped bulge (631) and the second cam-shaped bulge (632).
Further, the limiting device includes a first limiting block positioned on the end that is of the fastening and limiting piece and that is far away from the first cam-shaped bulge and the second cam-shaped bulge.
Further, the limiting device further includes a first limiting hole that is positioned on one end that is of the first detachable paddle rod and that faces the main paddle rod, and a second limiting hole that is positioned on the non-closed lantern ring; and

- the first limiting hole and the second limiting hole have the same opening shapes, and the first limiting block is configured to match the opening shapes of the first limiting hole and the second limiting hole so as to enter and be firmly clamped into the first limiting hole and the second limiting hole.

Further, third limiting holes are provided on one end that is of the first detachable paddle rod and that faces the paddle blade part, one end that is of the paddle blade part and that faces the first detachable paddle rod has the same cross section shape as that of the first detachable paddle rod, a radial circumference of an outer wall of the end is slightly smaller than that of an inner wall of the first detachable paddle rod, first elastic limiting pieces matched with the third limiting holes in shape are provided on the end that is of the paddle blade part (40) and that faces the first detachable paddle rod, and the first elastic limiting pieces are able to be elastically pressed into the paddle blade part; and

- fourth limiting holes are provided on one end that is of the second detachable paddle rod and that faces the paddle handle part, one end that is of the paddle handle part and that faces the second detachable paddle rod has the same cross section shape as that of the second detachable paddle rod, a radial circumference of an outer wall of the end is slightly smaller than that of an inner wall of the second detachable paddle rod, second elastic limiting pieces matched with the fourth limiting holes in shape are provided on the end that is of the paddle handle part and that faces the second detachable paddle rod, and the second elastic limiting pieces are able to be elastically pressed into the paddle handle part.

Preferably, the third limiting holes are symmetrically provided on two sides of the first detachable paddle rod with the smallest radial curvature, and have the same opening shapes, and the first elastic limiting pieces are symmetrically provided on two sides of the paddle blade part with the smallest radial curvature; and
The fourth limiting holes are symmetrically provided on two sides of the second detachable paddle rod with the smallest radial curvature, and have the same opening shapes, and the second elastic limiting pieces are symmetrically provided on two sides of the paddle handle part with the smallest radial curvature.
Preferably, the inner walls of the first detachable paddle rod and the second detachable paddle rod have the same radial circumferences, and the third limiting holes (22) and the fourth limiting holes (32) have the same opening shapes.
The detachable paddle provided by embodiments of the present utility model at least has the following beneficial effects.
The main paddle rod and the first detachable paddle rod are configured to have a water drop-shaped cross section, such that the first detachable paddle rod cannot be rotated after entering the main paddle rod, and therefore a good anti-rotation effect is realized; the first detachable paddle rod 20 is pre-fastened through the cooperation of the first protruding part, the second protruding part, the fastening screw and the nut in the fastening device, the first protruding part 621 is further pressed downwards by the first cam-shaped bulge 631 and the second cam-shaped bulge 632 by rotating the fastening and limiting piece 63, and the fastening screw 64 and the nut 65 are driven by the rotating shaft, and therefore the second protruding part 622 is lifted, such that the slit of the non-closed lantern ring 62 is further tightened, and finally the first detachable paddle rod 20 is well fastened; and the first limiting block 633 enters and is clamped into the second limiting hole 623 and the first limiting hole 21, such that the first detachable paddle rod 20 is well limited. Compared with a connecting device of a detachable paddle in the prior art, the first connecting part 60 can realize a good fastening and limiting effect on the basis that the first detachable paddle rod 20 and the main paddle rod 10 are prevented from rotating relatively; and meanwhile, the paddle rod is more suitable for being held by a hand because of the water drop-shaped cross section shape of the paddle, such that a good anti-skid effect can be realized; the paddle blade part 40 and the first detachable paddle rod 20 as well as the paddle handle part 50 and the second detachable paddle rod 30 are detachably connected, such that a single-blade paddle can be changed into a double-blade paddle.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view of an overall structure according to Embodiment 1 of the present utility model;

FIG. 2 is a cross-sectional view of a cross section of a main paddle rod according to the present utility model;

FIG. 3 is a perspective view of a closed lantern ring and a non-closed lantern ring according to the present utility model;

FIG. 4 is a perspective view of a fastening and limiting piece according to the present utility model;

FIG. 5 is a perspective view of a fastening screw and a nut according to the present utility model;

FIG. 6 is an assembly view of a first connecting part fastening and limiting a first detachable paddle rod according to the present utility model;

FIG. 7 is a perspective view of a second connecting part connecting a main paddle rod to a second detachable paddle rod according to the present utility model;

FIG. 8 is an assembly view of a first detachable paddle rod connecting to a paddle blade part according to the present utility model;

FIG. 9 is an assembly view of a second detachable paddle rod connecting to a paddle handle part according to the present utility model; and

FIG. 10 is a perspective view of an overall structure according to Embodiment 2 of the present utility model.

REFERENCE NUMERALS IN THE FIGURES

- 10: main paddle rod; 20: first detachable paddle rod; 21: first limiting hole; 22: third limiting hole; 30: second detachable paddle rod; 32: fourth limiting hole; 40: paddle blade part; 42: first elastic limiting piece; 50: paddle handle part; 52: second elastic limiting piece; 60: first connecting part; 61: closed lantern ring; 62: non-closed lantern ring; 621: first protruding part; 622: second protruding part; 623: second limiting hole; 63: fastening and limiting piece; 631: first cam-shaped bulge; 632: second cam-shaped bulge; 633: first limiting block; 634: groove; 64: fastening screw; 65: nut; 66: rotating shaft; and 70: second connecting part.

DETAILED DESCRIPTION OF EMBODIMENTS

The present utility model is further described below based on the preferred embodiments and with reference to the accompanying drawings.
Moreover, various members in the drawings are enlarged (thickened) or reduced (thinned) for convenience of understanding, but this is not intended to limit the protection scope of the present utility model.
Singular references also include plural references and vice versa.
In the description of embodiments of the present utility model, it should be noted that an orientation or position relationship indicated by terms “upper”, “lower”, “inner”, “outer”, or the like is an orientation or position relationship based on the accompanying drawings, or an orientation or position relationship that the product of the present utility model is usually placed when in use. These terms are merely used to facilitate and simplify description of the present utility model, instead of indicating or implying that a mentioned apparatus or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore the terms cannot be construed as a limitation on the present utility model. Moreover, in the description of the present utility model, terms “first”, “second”, or the like are used in the specification to distinguish between different units, but these terms are not to be limited by the order of manufacturing, and are not to be construed as an indication or implication of relative importance, and the names of these terms may differ from those in the detailed description and the claims.
The terms in the specification are used for purpose of describing embodiments of the present utility model, and are not intended to limit the present utility model. It should be further noted that, unless otherwise expressly specified and limited, terms “provide”, “interconnect”, and “connect” when present should be understood in a broad sense. For example, such terms may indicate a fixed connection, a detachable connection, or an integral connection; may indicate a mechanical connection; and may indicate a direct interconnection, an indirect connection through an intermediate medium, or an internal communication between two elements. Those skilled in the art may understand specific meanings of the foregoing terms in the present utility model according to specific cases.
As shown in FIG. 1 , a detachable paddle is provided in Embodiment 1 of the present utility model. FIG. 1 is a perspective view of an overall structure according to Embodiment 1. The detachable paddle includes a main paddle rod 10, a first detachable paddle rod 20, a second detachable paddle rod 30, a paddle blade part 40 and a paddle handle part 50, where the main paddle rod 10 is connected to the first detachable paddle rod 20 through a first connecting part 60, and the main paddle rod 10 is connected to the second detachable paddle rod 30 through a second connecting part 70.

Embodiment 1

Referring to FIGS. 1 and 2 , the main paddle rod 10 is a hollow rod with a water drop-shaped cross section and a certain wall thickness, and the first detachable paddle rod 20 and the second detachable paddle rod 30 are hollow rods with the same cross section as the main paddle rod 10 and a certain wall thickness; radial circumferences of outer walls of the first detachable paddle rod 20 and the second detachable paddle rod 30 are slightly smaller than that of an inner wall of the main paddle rod 10, and the first detachable paddle rod 20 and the second detachable paddle rod 30 are able to enter the main paddle rod 10 and fit the inner wall of the main paddle rod 10 to move axially along the main paddle rod 10. The cross section shape of the main paddle rod 10 is shown in FIG. 2 .
Referring to FIGS. 1, 3 to 6 , the first connecting part 60 includes a closed lantern ring 61 for connecting the main paddle rod 10, a fastening device for fastening the first detachable paddle rod 20, and a limiting device for limiting the first detachable paddle rod 20.
Specifically, the closed lantern ring 61 is fixedly connected to an outer edge of one end that is of the main paddle rod 10 and that faces the first detachable paddle rod 20.
Specifically, the fastening device includes a non-closed lantern ring 62, and at least a part of the non-closed lantern ring 62 is connected to the closed lantern ring 61 into a whole.
Specifically, the fastening device includes a first protruding part 621 and a second protruding part 622 that are positioned at two sides of a slit of the non-closed lantern ring 62, and the first protruding part 621 and the second protruding part 622 are provided with a screw hole for a screw rod to pass through.
Specifically, the first connecting part 60 includes a fastening and limiting piece 63.
Specifically, the fastening device further includes a first cam-shaped bulge 631 and a second cam-shaped bulge 632 that are provided on one end of the fastening and limiting piece 63 at an interval, the interval between the first cam-shaped bulge 631 and the second cam-shaped bulge 632 is configured to accommodate a screw head of a fastening screw 64, and the first cam-shaped bulge 631, the second cam-shaped bulge 632, and the screw head of the fastening screw 64 are all provided with a rotating shaft hole for a rotating shaft 66 to pass through.
Preferably, a groove 634 is provided at an edge of one end that is of the fastening and limiting piece 63 and that is far away from the first cam-shaped bulge 631 and the second cam-shaped bulge 632.
Specifically, the limiting device includes a first limiting block 633 positioned on the end that is of the fastening and limiting piece 63 and that is far away from the first cam-shaped bulge 631 and the second cam-shaped bulge 632.
Specifically, the limiting device further includes a first limiting hole 21 that is positioned on one end that is of the first detachable paddle rod 20 and that faces the main paddle rod 10, and a second limiting hole 623 that is positioned on the non-closed lantern ring 62.
Specifically, the first limiting hole 21 and the second limiting hole 623 have the same opening shapes, and the first limiting block 633 is configured to match the opening shapes of the first limiting hole 21 and the second limiting hole 623 so as to enter and be firmly clamped into the first limiting hole 21 and the second limiting hole 623.
FIGS. 3 to 5 show the detailed structures of the closed lantern ring 61, the non-closed lantern ring 62, the fastening and limiting piece 63, the fastening screw 64, the nut 65 and the rotating shaft 66, respectively.
The process of the first connecting part 60 fastening and limiting the first detachable paddle rod 20 is described in detail below with reference to FIG. 6 : the closed lantern ring 61 is fixedly connected to the outer edge of the end that is of the main paddle rod 10 and that faces the first detachable paddle rod 20 by gluing or the like, such that the non-closed lantern ring 62 is at a position protruding out of the outer edge of the main paddle rod 10; the first detachable paddle rod 20 enters the non-closed lantern ring 62 and further enters the main paddle rod 10, and the entering length of the first detachable paddle rod 20 into the main paddle rod 10 is properly adjusted, such that the first limiting hole 21 is aligned with the second limiting hole 623; the rotating shaft 66 sequentially passes through the rotating shaft holes on the first cam-shaped bulge 631, the screw head of the fastening screw 64, and the second cam-shaped projection 632, such that the fastening and limiting piece 63 can be rotated around the rotating shaft 66 relative to the fastening screw 64; the screw rod of the fastening screw 64 sequentially passes through the screw holes on the first protruding part 621 and the second protruding part 622 and is sleeved with the nut 65, and the nut 65 is screwed to enable the slit of the non-closed lantern ring 62 to be gradually tightened, such that the first detachable paddle rod 20 is pre-fastened; and at this point, one end that is of the fastening and limiting piece 63 and that is provided with the first limiting block 633 is rotated towards the second limiting hole 623, the first protruding part 621 is pressed downwards by the first cam-shaped bulge 631 and the second cam-shaped bulge 632 along with the rotation, and meanwhile, since the first cam-shaped bulge 631, the fastening screw 64 and the second cam-shaped bulge 632 are connected by the rotating shaft 66, the fastening screw 64 drives the nut 65 and therefore drives the second protruding part 622 to be lifted, such that the first detachable paddle rod 20 is further fastened; as the fastening and limiting piece 63 is rotated, the first limiting block 633 sequentially enters and is clamped into the second limiting hole 623 and the first limiting hole 21, such that the first detachable paddle rod 20 is limited.
The main paddle rod 10 and the first detachable paddle rod 20 are configured to have a water drop-shaped cross section, such that the first detachable paddle rod 20 cannot be rotated after entering the main paddle rod 10, and therefore a good anti-rotation effect is realized; the first detachable paddle rod 20 is pre-fastened through the cooperation of the first protruding part 621, the second protruding part 622, the fastening screw 64 and the nut 65 in the fastening device, the first protruding part 621 is further pressed downwards by the first cam-shaped bulge 631 and the second cam-shaped bulge 632 by rotating the fastening and limiting piece 63, and the screw 64 and the nut 65 are driven by the rotating shaft 66, and therefore the second protruding part 622 is lifted, such that the slit of the non-closed lantern ring 62 is further tightened, and therefore the first detachable paddle rod 20 is well fastened; and the first limiting block 633 enters and is clamped into the second limiting hole 623 and the first limiting hole 21, such that the first detachable paddle rod 20 is well limited. Compared with a connecting device of a detachable paddle in the prior art, the first connecting part 60 can realize a good fastening and limiting effect on the basis that the first detachable paddle rod 20 and the main paddle rod 10 are prevented from rotating relatively; and meanwhile, the paddle rod is more suitable for being held by a hand because of the water drop-shaped cross section shape of the paddle, such that a good anti-skid effect can be realized. The groove 634 is configured to facilitate a finger to extend into the fastening and limiting piece 63 when an operation of releasing the fastening and limiting of the first connecting part 60 on the first detachable paddle rod 20 is performed.
Specifically, as shown in FIG. 7 , the second detachable paddle rod 30 can enter the main paddle rod 10 and the entering length can be adjusted, one end of the second connecting part 70 is fixedly connected to an outer edge of one end that is of the main paddle rod 10 and that faces the second detachable paddle rod 30, and the other end fastens the second detachable paddle rod 30, such that effects of adjusting the overall length of the paddle rod, preventing the second detachable paddle rod 30 from being rotated, and fastening the second detachable paddle rod are realized.
Specifically, as shown in FIG. 8 , the first detachable paddle rod 20 is detachably connected to the paddle blade part 40, third limiting holes 22 are provided on one end that is of the first detachable paddle rod 20 and that faces the paddle blade part 40, one end that is of the paddle blade part 40 and that faces the first detachable paddle rod 20 has the same cross section shape as that of the first detachable paddle rod 20, a radial circumference of an outer wall of the end is slightly smaller than that of an inner wall of the first detachable paddle rod 20, first elastic limiting pieces 42 matched with the third limiting holes 22 in shape are provided on the end that is of the paddle blade part 40 and that faces the first detachable paddle rod 20. By pressing the elastic limiting pieces downwards to enable them to enter the first detachable paddle rod 20 and bounce up at the positions of the limiting holes, the paddle blade part 40 is therefore limited; and by pressing the first elastic limiting pieces 42 downwards again to enable them to be separated from the third limiting holes 22, the paddle blade part 40 can be pulled out.
As shown in FIG. 9 , the second detachable paddle rod 30 is detachably connected to the paddle handle part 50, fourth limiting holes 32 are provided on one end that is of the second detachable paddle rod 30 and that faces the paddle handle part 50, one end that is of the paddle handle part 50 and that faces the second detachable paddle rod 30 has the same cross section shape as that of the second detachable paddle rod 30, a radial circumference of an outer wall of the end is slightly smaller than that of an inner wall of the second detachable paddle rod 30, second elastic limiting pieces 52 matched with the fourth limiting holes 32 in shape are provided on the end that is of the paddle handle part 50 and that faces the second detachable paddle rod 30. By pressing the second elastic limiting pieces 52 downwards to enable them to enter the second detachable paddle rod 30 and bounce up at the positions of the fourth limiting holes 32, the paddle handle part 50 is therefore limited; and by pressing the second elastic limiting pieces 52 downwards again to enable them to be separated from the fourth limiting holes 32, the paddle handle part 50 can be pulled out.
Preferably, the third limiting holes 22 are symmetrically provided on two sides of the first detachable paddle rod 20 with the smallest radial curvature, and have the same opening shapes, and the first elastic limiting pieces 42 are symmetrically provided on two sides of the paddle blade part 40 with the smallest radial curvature.
Preferably, the fourth limiting holes 32 are symmetrically provided on two sides of the second detachable paddle rod 30 with the smallest radial curvature, and have the same opening shapes, and the second elastic limiting pieces 52 are symmetrically provided on two sides of the paddle handle part 50 with the smallest radial curvature.

Embodiment 2

FIG. 10 presents a perspective view of an overall structure according to Embodiment 2 of the present utility model.
Preferably, the inner walls of the first detachable paddle rod 20 and the second detachable paddle rod 30 have the same radial circumferences, and the third limiting holes 22 and the fourth limiting holes (32) have the same opening shapes, such that in this embodiment, the paddle handle part (50) can be replaced with the paddle blade part (40), and the detachable paddle of this embodiment is enabled to be changed into a double-paddle form.
The specific embodiments of the present utility model are described above in detail, and for those skilled in the art, several improvements and modifications can also be made to the present utility model without departing from the principle of the present utility model, and such improvements and modifications shall also fall within the protection scope of the claims of the present utility model.

Claims

1. A detachable paddle, comprising a main paddle rod (10), a first detachable paddle rod (20), a second detachable paddle rod (30), a paddle blade part (40) and a paddle handle part (50), wherein the main paddle rod (10) is connected to the first detachable paddle rod (20) through a first connecting part (60), and the main paddle rod (10) is connected to the second detachable paddle rod (30) through a second connecting part (70), wherein:

the main paddle rod (10) is a hollow rod with a water drop-shaped cross section and a certain wall thickness, and the first detachable paddle rod (20) and the second detachable paddle rod (30) are hollow rods with the same cross section as the main paddle rod (10) and a certain wall thickness; radial circumferences of outer walls of the first detachable paddle rod (20) and the second detachable paddle rod (30) are slightly smaller than that of an inner wall of the main paddle rod (10), and the first detachable paddle rod (20) and the second detachable paddle rod (30) are able to enter the main paddle rod (10) and fit the inner wall of the main paddle rod (10) to move axially along the main paddle rod (10);

the first connecting part (60) comprises a closed lantern ring (61) for connecting the main paddle rod (10), a fastening device for fastening the first detachable paddle rod (20), and a limiting device for limiting the first detachable paddle rod (20); and

the closed lantern ring (61) is fixedly connected to an outer edge of one end that is of the main paddle rod (10) and that faces the first detachable paddle rod (20).

2. The detachable paddle according to claim 1, wherein:

the fastening device comprises a non-closed lantern ring (62), and at least a part of the non-closed lantern ring (62) is connected to the closed lantern ring (61) into a whole.

3. The detachable paddle according to claim 2, wherein:

the fastening device comprises a first protruding part (621) and a second protruding part (622) that are positioned at two sides of a slit of the non-closed lantern ring (62), and the first protruding part (621) and the second protruding part (622) are provided with a screw hole for a screw rod to pass through.

4. The detachable paddle according to claim 3, wherein:

the first connecting part (60) comprises a fastening and limiting piece (63); and

the fastening device further comprises a first cam-shaped bulge (631) and a second cam-shaped bulge (632) that are provided on one end of the fastening and limiting piece (63) at an interval, the interval between the first cam-shaped bulge (631) and the second cam-shaped bulge (632) is configured to accommodate a screw head of a fastening screw (64), and the first cam-shaped bulge (631), the second cam-shaped bulge (632), and the screw head of the fastening screw (64) are all provided with a rotating shaft hole for a rotating shaft to pass through.

5. The detachable paddle according to claim 4, wherein:

a groove (634) is provided at an edge of one end that is of the fastening and limiting piece (63) and that is far away from the first cam-shaped bulge (631) and the second cam-shaped bulge (632).

6. The detachable paddle according to claim 1, wherein:

the first connecting part (60) comprises the fastening and limiting piece (63), and the fastening and limiting piece (63) comprises the first cam-shaped bulge (631) and the second cam-shaped bulge (632); and

the limiting device comprises a first limiting block (633) positioned on the end that is of the fastening and limiting piece (63) and that is far away from the first cam-shaped bulge (631) and the second cam-shaped bulge (632).

7. The detachable paddle according to claim 6, wherein:

the limiting device further comprises a first limiting hole (21) that is positioned on one end that is of the first detachable paddle rod (20) and that faces the main paddle rod (10), and a second limiting hole (623) that is positioned on the non-closed lantern ring (62); and

the first limiting hole (21) and the second limiting hole (623) have the same opening shapes, and the first limiting block (633) is configured to match the opening shapes of the first limiting hole (21) and the second limiting hole (623) so as to enter and be firmly clamped into the first limiting hole (21) and the second limiting hole (623).

8. The detachable paddle according to any one of claims 1 to 7, wherein:

third limiting holes (22) are provided on one end that is of the first detachable paddle rod (20) and that faces the paddle blade part (40), one end that is of the paddle blade part (40) and that faces the first detachable paddle rod (20) has the same cross section shape as that of the first detachable paddle rod (20), a radial circumference of an outer wall of the end is slightly smaller than that of an inner wall of the first detachable paddle rod (20), first elastic limiting pieces (42) matched with the third limiting holes (22) in shape are provided on the end that is of the paddle blade part (40) and that faces the first detachable paddle rod (20), and the first elastic limiting pieces (42) are able to be elastically pressed into the paddle blade part (40); and

fourth limiting holes (32) are provided on one end that is of the second detachable paddle rod (30) and that faces the paddle handle part (50), one end that is of the paddle handle part (50) and that faces the second detachable paddle rod (30) has the same cross section shape as that of the second detachable paddle rod (30), a radial circumference of an outer wall of the end is slightly smaller than that of an inner wall of the second detachable paddle rod (30), second elastic limiting pieces (52) matched with the fourth limiting holes (32) in shape are provided on the end that is of the paddle handle part (50) and that faces the second detachable paddle rod (30), and the second elastic limiting pieces (52) are able to be elastically pressed into the paddle handle part (50).

9. The detachable paddle according to claim 8, wherein:

the third limiting holes (22) are symmetrically provided on two sides of the first detachable paddle rod (20) with the smallest radial curvature, and have the same opening shapes, and the first elastic limiting pieces (42) are symmetrically provided on two sides of the paddle blade part (40) with the smallest radial curvature; and

the fourth limiting holes (32) are symmetrically provided on two sides of the second detachable paddle rod (30) with the smallest radial curvature, and have the same opening shapes, and the second elastic limiting pieces (52) are symmetrically provided on two sides of the paddle handle part (50) with the smallest radial curvature.

10. The detachable paddle according to claim 9, wherein:

the inner walls of the first detachable paddle rod (20) and the second detachable paddle rod (30) have the same radial circumferences, and the third limiting holes (22) and the fourth limiting holes (32) have the same opening shapes.