CN219035489U - Bidirectional transmission module and skipping rope - Google Patents

Abstract

The utility model relates to a bidirectional transmission module and a skipping rope, wherein the bidirectional transmission module comprises a front end cover, a rear end cover, a front gear, a rear gear, a transmission piece and a reversing gear, wherein the front end cover and the rear end cover can be in front-back butt joint; the front gear and the rear gear are respectively positioned at the front side and the rear side of the transmission piece and are in unidirectional transmission connection with the transmission piece, and the transmission direction of the transmission piece to the front gear is opposite to the transmission direction of the transmission piece to the rear gear; the reversing gear is meshed with the front gear and the rear gear; the front side of the transmission piece is provided with an input rotating shaft which can pass through the front gear and the front end cover to be in transmission connection with the outside; the rear side of the rear gear is provided with an output transmission block, the rear end cover is provided with a avoidance hole, and the output transmission block can pass through the avoidance hole to be in external transmission connection. The bidirectional transmission module does not contain a ratchet wheel, can be installed in the handle of the jump rope in a modularized manner, is matched with the counter to realize bidirectional counting, and is not easily influenced by manufacturing tolerance or assembly tolerance of the handle.

Description

Bidirectional transmission module and skipping rope

Technical Field

The utility model relates to the technical field of rope skipping, in particular to a bidirectional transmission module and a rope skipping.

Background

In the prior art, most of mechanical bidirectional counting skipping ropes adopt a transmission mode of matching bevel gears and ratchet wheels, the ratchet wheels have large resistance in transmission, noise can be generated in the working process, the transmission is unstable in high-speed operation, and the number is easy to be recorded. And the handle of mechanical bidirectional counting rope skipping is troublesome in assembly, if manufacturing tolerance or assembly tolerance of the handle is too big, then easily produce bad operating condition such as gear jump or card die in bevel gear and ratchet assembly to the handle, influence normal transmission and count, user experience is poor.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a bidirectional transmission module which does not contain a ratchet wheel, can realize the bidirectional transmission function, can be modularly arranged in a handle of a skipping rope, and can realize bidirectional counting by matching with a counter, so that the assembly of the handle is more convenient, and the transmission effect is not easily influenced by the manufacturing tolerance or the assembly tolerance of the handle.

The technical scheme of the utility model is that the bidirectional transmission module comprises a front end cover, a rear end cover, a front gear, a rear gear, a transmission piece and a reversing gear, wherein the front end cover and the rear end cover can be in front-back butt joint; the front gear and the rear gear are respectively positioned at the front side and the rear side of the transmission piece and are in unidirectional transmission connection with the transmission piece, and the transmission direction of the transmission piece to the front gear is opposite to the transmission direction of the transmission piece to the rear gear; the reversing gear is meshed with the front gear and the rear gear; the front side of the transmission piece is provided with an input rotating shaft which can pass through the front gear and the front end cover to be in transmission connection with the outside; the rear side of the rear gear is provided with an output transmission block, the rear end cover is provided with a avoidance hole, and the output transmission block can pass through the avoidance hole to be in external transmission connection; the reversing gear is rotatably connected to the front end cover and the rear end cover.

Compared with the prior art, the bidirectional transmission module has the following advantages: when the transmission piece is driven to rotate reversely, the transmission piece drives the front gear to rotate reversely, and the front gear drives the rear gear to rotate positively through the transmission of the reversing gear; when the transmission piece is driven to rotate forward, the transmission piece drives the rear gear to rotate forward, and the rear gear drives the front gear to rotate reversely through the transmission of the reversing gear; therefore, no matter the transmission piece is driven to rotate forward or reversely, the rear gear can be driven to rotate forward, and the bidirectional transmission function is realized; the bidirectional transmission module does not contain a ratchet wheel, all transmission components are packaged in the front end cover and the rear end cover, can be installed in the handle of the jump rope in a modularized manner, and can realize bidirectional counting by matching with the counter, so that the handle is more convenient to assemble, and the transmission effect is not easily influenced by the manufacturing tolerance or the assembly tolerance of the handle.

Preferably, the front inner transmission teeth are arranged on the end face of the front gear, which is opposite to the transmission piece, and the front transmission block is arranged on the front side face of the transmission piece; when the transmission piece rotates reversely, the front transmission block is in transmission connection with the front inner transmission teeth; when the transmission piece rotates forward, the front transmission block keeps away the front inner transmission teeth. By adopting the structure, the unidirectional transmission connection of the transmission piece to the front gear is realized, the structure is simple, when the transmission piece is driven to rotate reversely, the transmission piece drives the front gear to rotate reversely, and the front gear drives the rear gear to rotate positively through the transmission of the reversing gear; when the transmission piece is driven to rotate forward, the transmission piece does not directly transmit the front gear, and interference between the front gear and the rear gear is avoided.

Preferably, the end face of the rear gear, which is opposite to the transmission piece, is provided with rear inner transmission teeth, and the rear side face of the transmission piece is provided with a rear transmission block; when the transmission piece rotates positively, the rear transmission block is in transmission connection with the rear inner transmission teeth; when the transmission piece rotates reversely, the rear transmission block keeps away the rear inner transmission gear. By adopting the structure, the one-way transmission connection of the transmission piece to the rear gear is realized, the structure is simple, and when the transmission piece is driven to rotate forward, the transmission piece drives the rear gear to rotate forward; when the transmission piece is driven to reversely rotate, the transmission piece does not directly transmit the rear gear, and interference between the front gear and the rear gear is avoided.

Preferably, a gear limiting piece is further arranged between the front end cover and the rear end cover, the front end cover and the rear end cover are matched to limit the gear limiting piece, and the reversing gear is inserted into the gear limiting piece and can rotate on the gear limiting piece. By adopting the structure, the structure is simple, the assembly is easy, the structure of the front end cover and the rear end cover is simplified, and the assembly precision of the front end cover and/or the rear end cover and the reversing gear is reduced.

Preferably, the side wall of the front end cover is provided with a front limiting table, the side wall of the rear end cover is provided with a rear limiting table, and the front limiting table and the rear limiting table are matched to limit the gear limiting piece. By adopting the structure, the assembly of the gear limiting piece is convenient.

Preferably, the front end cover and the rear end cover can be in front-back buckling butt joint or in front-back threaded butt joint. By adopting the structure, the front end cover and the rear end cover are convenient to butt joint or detach.

The utility model also provides a skipping rope, which has the technical scheme that the skipping rope comprises a handle shell, wherein the front end of the handle shell is provided with a rotatable rope connecting rotating shaft, the front end of the rope connecting rotating shaft is provided with a rope threading hole for connecting a rope, the rear end of the rope connecting rotating shaft stretches into the handle shell and is axially limited by the handle shell, and the rear end of the rope connecting rotating shaft is provided with a connecting hole; the front part of the handle shell is provided with the bidirectional transmission module, and the input rotating shaft is connected with the connection Kong Chuandong; the handle shell is also internally provided with a counter, and the output transmission block is used for being in transmission connection with the counter; the handle shell limits the circumference of the bidirectional transmission module.

Compared with the prior art, the skipping rope has the following advantages: the skipping rope adopts the bidirectional transmission module to transmit the counter, so that the bidirectional counting function can be realized; the bidirectional transmission module can be installed in the handle of the skipping rope in a modularized manner, and the handle shell is only assembled with the front end cover and the rear end cover, so that the assembly of the handle is more convenient, and the transmission effect of the bidirectional transmission module is not easily influenced by the manufacturing tolerance or the assembly tolerance of the handle shell.

Preferably, the inner side of the handle shell is provided with a limit groove; the side wall of the front end cover is provided with a front limit lug, and the handle shell is matched with the front limit lug through a limit groove to limit the bidirectional transmission module in the circumferential direction; or the side wall of the rear end cover is provided with a rear limit lug, and the handle shell is matched with the rear limit lug through a limit groove to limit the bidirectional transmission module in the circumferential direction. By adopting the structure, the structure is simple, and the circumferential limit of the handle shell on the bidirectional transmission module is realized.

Preferably, the bidirectional transmission module is a bidirectional transmission module as described above; the inner side of the handle shell is provided with a limiting ring, and the front limiting table and the rear limiting table are both limited in the limiting ring. By adopting the structure, the structure is simple, the circumferential limit of the handle shell on the bidirectional transmission module is realized, and the assembly structure of the reversing gear is stable.

Drawings

Fig. 1 is a schematic structural diagram of a bidirectional transmission module according to the present utility model.

Fig. 2 is a schematic diagram of the explosive structure of fig. 1.

Fig. 3 is a schematic view of another explosive structure of fig. 1.

Fig. 4 is a schematic structural view of a rear end face of a transmission member in the bidirectional transmission module of the present utility model.

Fig. 5 is a schematic structural view of the rear side of the rear gear in the bidirectional transmission module of the present utility model.

Fig. 6 is a schematic structural view of the jump rope of the present utility model.

Fig. 7 is a schematic view showing an internal structure of a handle housing of the jump rope of the present utility model.

Fig. 8 is a schematic view of a sectional structure in A-A direction of fig. 5.

Fig. 9 is a schematic view of a cross-sectional structure in the B-B direction of fig. 5.

Fig. 10 is a schematic structural view of a rope connecting rotary shaft of the rope skipping of the present utility model.

As shown in the figure: 1. the handle comprises a handle shell, 1-1 parts, a rope connecting rotating shaft hole, 1-2 parts, a transmission module mounting position, 1-3 parts, a limiting ring, 1-4 parts, a limiting groove, 1-5 parts, a reset button, 1-6 parts, a vision window, 1-7 parts, a counter mounting position, 2 parts, a rope connecting rotating shaft, 2-1 parts, a rope threading hole, 2-2 parts, limiting sheets, 2-3 parts, a connecting hole, 2-4 parts, a linear limiting groove, 3 parts, a bidirectional transmission module, 3-1 parts, a front end cover, 3-11 parts, a front limiting table, 3-12 parts, a front limiting lug, 3-2 parts, a rear end cover, 3-21 parts, a rear limiting table, 3-22 parts, a rear limiting lug, 3-3 parts, a front gear, 3-31 parts, a front inner transmission tooth, 3-4 parts, a rear gear, 3-41 parts, a rear inner transmission tooth, 3-42 parts, an output transmission block, 3-5 parts, 3-51 parts, an input rotating shaft, 3-52 parts, a front transmission block, 3-53 parts, a rear transmission block, 3-6 parts, a reversing gear and 3-7 parts.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed description are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness, size and shape of the object have been slightly exaggerated for convenience of explanation. The figures are merely examples and are not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including" and/or "having," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Furthermore, when an expression such as "… at least one" occurs after a list of features listed, the entire listed feature is modified rather than modifying a separate element in the list.

Example 1:

as shown in fig. 1 to 3, the bidirectional transmission module 3 of the present utility model includes front and rear end caps 3-1 and 3-2 that can be butted back and forth, a front gear 3-3, a rear gear 3-4, a transmission 3-5, a reversing gear 3-6, and a gear limit plate 3-7 disposed between the front and rear end caps 3-1 and 3-2. The peripheral walls of the front end cover 3-1 and the rear end cover 3-2 are respectively provided with a buckle connection structure which can be matched and butted mutually, namely, the front end cover 3-1 and the rear end cover 3-2 can be buckled and butted back and forth. The side wall of the front end cover 3-1 is provided with a front limiting table 3-11, the side wall of the rear end cover 3-2 is provided with a rear limiting table 3-21, after the front end cover 3-1 and the rear end cover 3-2 are matched and butted, the front limiting table 3-11 and the rear limiting table 3-21 are also matched and butted, and the gear limiting sheet 3-7 is embedded into a limiting structure formed by the front limiting table 3-11 and the rear limiting table 3-21 together. Through holes are arranged on the end faces of the front end cover 3-1 and the rear end cover 3-2.

The front gear 3-3, the rear gear 3-4 and the reversing gear 3-6 are all gears with transmission teeth on the peripheral surface, and the reversing gear 3-6 is meshed with the front gear 3-3 and the rear gear 3-4. The reversing gear 3-6 is inserted into the gear limiting piece 3-7 and can rotate in the gear limiting piece 3-7, so that the front end cover 3-1 and the rear end cover 3-2 radially limit the front gear 3-3, the rear gear 3-4 and the reversing gear 3-6 assembled in the reversing gear.

The front gear 3-3 and the rear gear 3-4 are respectively positioned at the front side and the rear side of the transmission piece 3-5 and are in unidirectional transmission connection with the transmission piece 3-5, and the transmission direction of the transmission piece 3-5 to the front gear 3-3 is opposite to the transmission direction of the transmission piece 3-5 to the rear gear 3-4.

A circle of front inner transmission teeth 3-31 are arranged on the end surface of the front gear 3-3 opposite to the transmission part 3-5, and the front inner transmission teeth 3-31 are provided with two surfaces which are respectively used as a transmission surface and a avoidance surface; the front side surface of the transmission piece 3-5 is provided with two front transmission blocks 3-52, and each front transmission block 3-52 is also provided with two surfaces which are respectively used as a transmission end surface and a avoidance side surface. When the transmission piece 3-5 rotates reversely, the transmission end of the front transmission block 3-52 is in contact with the transmission surface of the front inner transmission tooth 3-31 to drive the front gear 3-3 to rotate reversely synchronously, and the front gear 3-3 drives the rear gear 3-4 to rotate forwardly through the transmission of the reversing gear 3-6. However, when the transmission member 3-5 rotates forward, the avoidance side of the front transmission block 3-52 is avoidance to the avoidance surface of the front inner transmission gear 3-31, and the front gear 3-3 cannot be directly transmitted.

Likewise, a circle of rear inner transmission teeth 3-41 are arranged on the end face of the rear gear 3-4 opposite to the transmission piece 3-5, and the rear inner transmission teeth 3-41 are also provided with two faces which are respectively used as a transmission face and a avoidance face; two rear driving blocks 3-53 are provided on the rear side of the driving member 3-5, and as shown in fig. 4, two faces are also provided on each front driving block 3-52 as a driving end face and a clearance side face, respectively. When the transmission piece 3-5 rotates forward, the transmission end of the rear transmission block 3-53 is in contact with the transmission surface of the rear inner transmission tooth 3-41 to drive the rear gear 3-4 to rotate synchronously forward, and the rear gear 3-4 drives the front gear 3-3 to rotate reversely through the transmission of the reversing gear 3-6. When the transmission member 3-5 rotates reversely, the avoidance side of the rear transmission block 3-53 is avoided against the avoidance surface of the rear inner transmission tooth 3-41, and the rear gear 3-4 can not be directly transmitted.

The front side of the transmission part 3-5 is provided with an input rotating shaft 3-51, and the input rotating shaft 3-51 passes through holes on the front gear 3-3 and the end face of the front end cover 3-1; the rear side of the rear gear 3-4 is provided with an output transmission block 3-42, as shown in fig. 5, a through hole on the end face of the rear end cover 3-2 is provided with a avoidance hole, and the output transmission block 3-42 passes through the avoidance hole; in this way, the front end cover 3-1 and the rear end cover 3-2 limit the front gear 3-3, the rear gear 3-4, the transmission member 3-5 and the reversing gear 3-6 in the axial direction.

In other embodiments, the front end cover 3-1 and the rear end cover 3-2 may also be connected back and forth in a threaded manner.

Example 2:

as shown in fig. 6 to 9, the jump rope of the present utility model includes a handle housing 1, a rope-connecting rotary shaft 2, a bidirectional transmission module 3 as described in embodiment 1, and a counter and a rope (neither counter nor rope are shown). The front end of the handle shell 1 is provided with a rope connecting rotating shaft hole 1-1 for installing a rope connecting rotating shaft 2; a transmission module mounting position 1-2 is arranged in the handle shell 1, and the transmission module mounting position 1-2 is adjacent to the rope connecting rotating shaft hole 1-1 and is used for mounting a bidirectional transmission module 3; the rear side of the transmission module installation position 1-2 is provided with a counter installation position 1-7 for installing a counter, and the handle shell 1 corresponding to the counter installation position 1-7 is also provided with a vision window 1-6 and a reset button 1-5, so that the counter can be conveniently read and cleared.

The front end of the rope connecting rotating shaft 2 is provided with a rope threading hole 2-1 for connecting a rope, the rear end of the rope connecting rotating shaft 2 is provided with a connecting hole 2-3, a linear limiting groove 2-4 is arranged in the connecting hole 2-3, as shown in fig. 10, the outer side of the hole wall of the connecting hole 2-3 is provided with a limiting piece 2-2, the rear end of the rope connecting rotating shaft 2 extends into the handle shell 1 through the rope connecting rotating shaft hole 1-1, the limiting piece 2-2 is limited in the handle shell 1, and the rope connecting rotating shaft 2 can rotate in the rope connecting rotating shaft hole 1-1 but is limited by the handle shell 1 in the axial direction.

The transmission module mounting position 1-2 is provided with a limiting ring 1-3, and a front limiting table 3-11 and a rear limiting table 3-21 on the bidirectional transmission module 3 are both limited in the limiting ring 1-3 to axially limit the bidirectional transmission module 3. The transmission module mounting position 1-2 is also provided with a limit groove 1-4, the side wall of the front end cover 3-1 is provided with a front limit bump 3-12, the side wall of the rear end cover 3-2 is provided with a rear limit bump 3-22, and the front limit bump 3-12 and the rear limit bump 3-22 are inserted into the limit groove 1-4 to limit the bidirectional transmission module 3 in the circumferential direction.

Because the bidirectional transmission module 3 is installed in the handle of the jump rope in a modularized manner, the handle shell 1 is only assembled with the front end cover 3-1 and the rear end cover 3-2, so that the assembly of the handle is more convenient, and the transmission effect of the bidirectional transmission module 3 is not easily influenced by the manufacturing tolerance or the assembly tolerance of the handle shell 1.

The input rotating shaft 3-51 of the transmission part 3-5 is inserted into the linear limiting groove 2-4 in the connecting hole 2-3 so as to be in transmission connection with the connecting rope rotating shaft 2, and is driven by the connecting rope rotating shaft 2 to rotate forward or reversely. The counter can adopt mature products in the prior art, for example, the counter with a transmission rotary disc arranged at one end, and the output transmission block 3-42 of the rear gear 3-4 is in transmission connection with the rotary disc of the counter, so that the counter can realize bidirectional counting.

The foregoing is merely exemplary of the present utility model and is not intended to limit the scope of the present utility model; modifications and equivalent substitutions are intended to be included in the scope of the claims without departing from the spirit and scope of the present utility model.

Claims (9)

1. The bidirectional transmission module is characterized by comprising a front end cover (3-1) and a rear end cover (3-2) which can be in front-back butt joint, and a front gear (3-3), a rear gear (3-4), a transmission piece (3-5) and a reversing gear (3-6) which are arranged between the front end cover (3-1) and the rear end cover (3-2); the front gear (3-3) and the rear gear (3-4) are respectively positioned at the front side and the rear side of the transmission piece (3-5) and are in unidirectional transmission connection with the transmission piece (3-5), and the transmission direction of the transmission piece (3-5) to the front gear (3-3) is opposite to the transmission direction of the transmission piece (3-5) to the rear gear (3-4); the reversing gear (3-6) is meshed with the front gear (3-3) and the rear gear (3-4); an input rotating shaft (3-51) is arranged at the front side of the transmission part (3-5), and the input rotating shaft (3-51) can pass through the front gear (3-3) and the front end cover (3-1) to be in external transmission connection; the rear side of the rear gear (3-4) is provided with an output transmission block (3-42), the rear end cover (3-2) is provided with a avoidance hole, and the output transmission block (3-42) can pass through the avoidance hole to be in external transmission connection; the reversing gear (3-6) is rotatably connected to the front end cover (3-1) and the rear end cover (3-2).

2. The bidirectional transmission module according to claim 1, characterized in that a front inner transmission tooth (3-31) is arranged on the end surface of the front gear (3-3) opposite to the transmission piece (3-5), and a front transmission block (3-52) is arranged on the front side surface of the transmission piece (3-5); when the transmission piece (3-5) rotates reversely, the front transmission block (3-52) is in transmission connection with the front inner transmission teeth (3-31); when the transmission part (3-5) rotates forward, the front transmission block (3-52) keeps away the front inner transmission teeth (3-31).

3. The bidirectional transmission module according to claim 1 or 2, characterized in that the end face of the rear gear wheel (3-4) opposite to the transmission member (3-5) is provided with rear inner transmission teeth (3-41), and the rear side face of the transmission member (3-5) is provided with rear transmission blocks (3-53); when the transmission piece (3-5) rotates forwards, the rear transmission block (3-53) is in transmission connection with the rear inner transmission teeth (3-41); when the transmission part (3-5) rotates reversely, the rear transmission block (3-53) keeps away the rear inner transmission teeth (3-41).

4. The bidirectional transmission module according to claim 1, wherein a gear limiting piece (3-7) is further arranged between the front end cover (3-1) and the rear end cover (3-2), the front end cover (3-1) and the rear end cover (3-2) are matched to limit the gear limiting piece (3-7), and the reversing gear (3-6) is inserted into the gear limiting piece (3-7) and can rotate on the gear limiting piece (3-7).

5. The bidirectional transmission module according to claim 4, wherein a front limiting table (3-11) is arranged on the side wall of the front end cover (3-1), a rear limiting table (3-21) is arranged on the side wall of the rear end cover (3-2), and the front limiting table (3-11) and the rear limiting table (3-21) cooperate to limit the gear limiting plate (3-7).

6. The bidirectional transmission module as recited in claim 1, wherein the front end cover (3-1) and the rear end cover (3-2) are snap-engageable back and forth or screw-engageable back and forth.

7. The skipping rope comprises a handle shell (1), wherein a rotatable rope connecting rotating shaft (2) is arranged at the front end of the handle shell (1), a rope threading hole (2-1) for connecting a rope is formed in the front end of the rope connecting rotating shaft (2), the rear end of the rope connecting rotating shaft (2) stretches into the handle shell (1) and is limited by the handle shell (1) in the axial direction, and a connecting hole (2-3) is formed in the rear end of the rope connecting rotating shaft (2); characterized in that the front part of the handle housing (1) is provided with a bidirectional transmission module as claimed in any one of claims 1 to 6, the input shaft (3-51) being in transmission connection with the connection hole (2-3); a counter is also arranged in the handle shell (1), and an output transmission block (3-42) is used for being in transmission connection with the counter; the handle shell (1) limits the circumference of the bidirectional transmission module.

8. The skipping rope according to claim 7, characterized in that the inner side of the handle housing (1) is provided with a limit groove (1-4); a front limit bump (3-12) is arranged on the side wall of the front end cover (3-1), and the handle shell (1) is matched with the front limit bump (3-12) through a limit groove (1-4) to limit the circumference of the bidirectional transmission module; or the side wall of the rear end cover (3-2) is provided with a rear limit lug (3-22), and the handle shell (1) is matched with the rear limit lug (3-22) through a limit groove (1-4) to limit the circumference of the bidirectional transmission module.

9. A jump rope according to claim 7 or 8, characterized in that said bidirectional transmission module is a bidirectional transmission module according to claim 5; the inner side of the handle shell (1) is provided with a limiting ring (1-3), and both the front limiting table (3-11) and the rear limiting table (3-21) are limited in the limiting ring (1-3).

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