CN213159294U

CN213159294U - Tennis training device

Info

Publication number: CN213159294U
Application number: CN202022247141.7U
Authority: CN
Inventors: 赵丽千
Original assignee: Yunnan Normal University
Current assignee: Yunnan Normal University
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-05-11
Anticipated expiration: 2030-10-10

Abstract

The utility model discloses a tennis training ware, including the installation shell, the inside of installation shell is rotated and is connected with the axis of rotation, fixed mounting has the wiring roller in the axis of rotation, the wiring has the stretch cord on the wiring roller, fixed mounting has the worm in the axis of rotation, the inside of installation shell is rotated and is connected the worm wheel, the worm wheel is connected with the worm meshing, one side fixed mounting of worm wheel has the cam disc, fixed mounting has the mount pad on the inner wall of installation shell one side, it is connected with the connecting rod to rotate on the mount pad, one side fixed mounting that the connecting rod is close to the cam disc has lug and extension spring, one side that the connecting rod was kept away from to the lug offsets with the outer wall of cam disc, extension spring keeps away from the one end of connecting rod and the inner wall. The utility model relates to a sports apparatus technical field, simple structure can avoid the in-process stretch cord of rolling the condition of beating the festival appears, is favorable to user's use.

Description

Tennis training device

Technical Field

The utility model relates to a sports apparatus technical field especially relates to a tennis training ware.

Background

The tennis trainer occupies small space, can be used indoors and outdoors, and is convenient to carry. Can practice the forward and backward and various batting techniques, has the effect of improving the batting level and can standardize various basic actions.

In the process of rolling up the elastic rope, the elastic rope is easy to tie, the use is very inconvenient, time is needed for arranging, the time of a user is wasted, the length of the elastic rope is inconvenient to adjust, and the tennis trainer is inconvenient to use by the user.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art and providing a tennis training device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a tennis trainer comprises an installation shell, wherein a rotating shaft is rotatably connected inside the installation shell, a rope winding roller is fixedly installed on the rotating shaft, an elastic rope is wound on the rope winding roller, a worm is fixedly installed on the rotating shaft, a worm wheel is rotatably connected inside the installation shell, the worm wheel is meshed with the worm and is connected with the worm, a cam disc is fixedly installed on one side of the worm wheel, an installation seat is fixedly installed on the inner wall of one side of the installation shell, a connecting rod is rotatably connected on the installation seat, a convex block and an extension spring are fixedly installed on one side, close to the cam disc, of the connecting rod, one side, far away from the connecting rod, of the convex block abuts against the outer wall of the cam disc, one end, far away from the connecting rod, of the extension spring is fixedly connected with the inner wall of the installation shell, an opening for the elastic rope to pass through is formed in one, the tennis ball fixing device is characterized in that one end, penetrating through the opening and the through hole, of the elastic rope extends to a position right below the mounting shell, a tennis ball is fixedly mounted on the elastic rope, a gear is fixedly mounted on the rotating shaft, a threaded through hole is formed in one side of the mounting shell, a threaded rod is connected to the inner thread of the threaded through hole in a threaded mode, one end, extending to the inside of the mounting shell, of the threaded rod is rotatably connected with a rack, and the rack is connected with the gear.

Preferably, the both sides of installation shell are equal fixed mounting has the installation ear, the installation ear is stainless steel.

Preferably, one end of the rotating shaft extending to the outside of the mounting shell is fixedly connected with a rotating hand wheel, and the rotating hand wheel is located at the top of the mounting shell.

Preferably, a handle is arranged on the rotating hand wheel, and an anti-skid leather sleeve is sleeved on the handle.

Preferably, a limiting block is fixedly mounted on the rack, and a sliding opening for sliding the limiting block is formed in the inner top wall of the mounting shell.

Preferably, one end of the threaded rod extending to the outside of the mounting shell is fixedly connected with a rotating block, and the rotating block is positioned on one side of the mounting shell.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the rotation hand wheel is rotated through rotation to enable the rotation shaft to rotate, the rope winding roller is driven to rotate through rotation of the rotation shaft, the elastic rope is lengthened through rotation of the rope winding roller, the length of the elastic rope is convenient to control, rotation of the rotation shaft can be locked through structural cooperation among the gear, the rack, the threaded rod and the limiting block, the adjusted elastic rope is fixed, and use of a user is facilitated.

2. The rotating hand wheel is rotated to rotate the rotating shaft, the rope winding roller is rotated through rotation of the rotating shaft, the elastic rope is wound, the worm is rotated through rotation of the rotating shaft, the worm wheel can be rotated through meshing of the worm and the worm wheel, the cam disc is rotated through rotation of the worm wheel, the connecting rod can be pulled through elasticity of the extension spring to enable the lug and the outer wall of the cam disc to be in a close-fitting state, reciprocating movement of the connecting rod is achieved through matching of the cam disc and the lug, the elastic rope can be uniformly wound on the rope winding roller through reciprocating movement of the connecting rod, and the problems that the elastic rope is easy to tie up knots, inconvenient to use, time-consuming and time-wasting of users are solved.

Drawings

Fig. 1 is a schematic view of a main structure of a tennis training device according to the present invention;

fig. 2 is a schematic sectional view of a tennis training device according to the present invention;

fig. 3 is an enlarged view of a structure at a in fig. 2.

In the figure: 1. mounting a shell; 2. mounting lugs; 3. a rotating shaft; 4. a rope winding roller; 5. an elastic cord; 6. a worm; 7. a worm gear; 8. rotating a hand wheel; 9. a cam plate; 10. a mounting seat; 11. a connecting rod; 12. a bump; 13. an extension spring; 14. tennis balls; 15. a gear; 16. a rack; 17. a threaded rod; 18. and a limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a tennis training device comprises a mounting shell 1, a rotating shaft 3 is rotatably connected inside the mounting shell 1, a rope winding roller 4 is fixedly installed on the rotating shaft 3, an elastic rope 5 is wound on the rope winding roller 4, a worm 6 is fixedly installed on the rotating shaft 3, a worm wheel 7 is rotatably connected inside the mounting shell 1, the worm wheel 7 is meshed with the worm 6, a cam disc 9 is fixedly installed on one side of the worm wheel 7, a mounting seat 10 is fixedly installed on the inner wall of one side of the mounting shell 1, a connecting rod 11 is rotatably connected on the mounting seat 10, a convex block 12 and an extension spring 13 are fixedly installed on one side of the connecting rod 11 close to the cam disc 9, one side of the convex block 12 far away from the connecting rod 11 is abutted against the outer wall of the cam disc 9, one end of the extension spring 13 far away from the connecting rod 11 is fixedly connected with the inner wall of the mounting shell 1, the bottom of installation shell 1 is seted up the through-hole that supplies stretch cord 5 to pass, and stretch cord 5 passes the opening and the one end of through-hole extends to under the installation shell 1 to fixed mounting has tennis 14, and fixed mounting has gear 15 on the axis of rotation 3, the screw thread through-hole that one side of installation shell 1 was seted up, and the internal thread of screw thread through-hole is connected with threaded rod 17, and threaded rod 17 extends to the inside one end rotation of installation shell 1 and is connected with rack 16, and rack 16 is connected with the gear 15 meshing.

Wherein, the equal fixed mounting in both sides of installation shell 1 has installation ear 2, and installation ear 2 is stainless steel, has made things convenient for the installation and the dismantlement of installation shell 1 through installation ear 2, is convenient for install the use of shell 1.

Wherein, the axis of rotation 3 extends to the outside one end fixedly connected with of installation shell 1 and rotates hand wheel 8, rotates the top that hand wheel 8 is located installation shell 1, has increased the stress point of axis of rotation 3 through rotating hand wheel 8, makes things convenient for the rotation of axis of rotation 3.

Wherein, be provided with the handle on the rotation hand wheel 8, the cover is equipped with anti-skidding leather sheath on the handle, through the convenient rotation of rotating hand wheel 8 of handle, has improved the frictional force between palm and the handle through anti-skidding leather sheath, avoids the handle too smooth and cause the insecure of taking, influences the problem of use.

Wherein, fixed mounting has stopper 18 on the rack 16, offers on the interior roof of installation shell 1 and supplies the gliding slippery felly of stopper 18, uses through the sliding fit of stopper 18 and slippery felly, carries on spacingly and the direction to the removal of rack 16, avoids rack 16 to take place the skew at the in-process position that removes, has improved the stability that rack 16 removed.

Wherein, threaded rod 17 extends to the outside one end fixedly connected with turning block of installation shell 1, and the turning block is located one side of installation shell 1, has increased threaded rod 17's stress point through the turning block, makes things convenient for threaded rod 17's rotation.

The working principle is as follows: in the utility model, when in use, the installation shell 1 is firstly installed, after the installation is completed, the rotating block is rotated to rotate the threaded rod 17, the threaded rod 17 is in threaded connection with the installation shell 1, so that the threaded rod 17 moves to the outside of the installation shell 1, the threaded rod 17 pulls the rack 16 to slide, the meshing of the rack 16 and the gear 15 is in a separation state, the rotating shaft 3 is in a rotatable state at the moment, the rotating hand wheel 8 is rotated to rotate the rotating shaft 3, the rope winding roller 4 is driven to rotate by the rotation of the rotating shaft 3, the elastic rope 5 is lengthened by the rotation of the rope winding roller 4, so that the length of the elastic rope 5 is conveniently controlled, the threaded rod 17 is moved to the inside of the installation shell 1 by rotating the threaded rod 17, the rack 16 is pushed to be meshed with the gear 15 again, the rotation of the gear 15 is fixed by the meshing of the rack 16 and the gear 15, the rotation of the gear 15 is fixed to realize, when the elastic rope 5 is wound, the rotating hand wheel 8 is rotated to rotate the rotating shaft 3, the rope winding roller 4 is rotated through the rotation of the rotating shaft 3 to wind the elastic rope 5, the worm 6 is rotated due to the rotation of the rotating shaft 3, the worm wheel 7 can be rotated through the meshing of the worm 6 and the worm wheel 7, the cam disc 9 is rotated through the rotation of the worm wheel 7, the connecting rod 11 can be pulled through the elastic force of the extension spring 13 to enable the lug 12 and the outer wall of the cam disc 9 to be in a close state, the reciprocating movement of the connecting rod 11 is realized through the matching of the cam disc 9 and the lug 12, the elastic rope 5 can be uniformly wound on the rope winding roller 4 through the reciprocating movement of the connecting rod 11, and the easy knotting of the elastic rope 5 is avoided, the use is very inconvenient, the time is needed for management, and the time of a user is wasted.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The tennis trainer comprises an installation shell (1) and is characterized in that a rotating shaft (3) is connected to the inner portion of the installation shell (1) in a rotating mode, a rope winding roller (4) is fixedly installed on the rotating shaft (3), an elastic rope (5) is wound on the rope winding roller (4), a worm (6) is fixedly installed on the rotating shaft (3), a worm wheel (7) is connected to the inner portion of the installation shell (1) in a rotating mode, the worm wheel (7) is connected with the worm (6) in a meshed mode, a cam disc (9) is fixedly installed on one side of the worm wheel (7), an installation seat (10) is fixedly installed on the inner wall of one side of the installation shell (1), a connecting rod (11) is connected to the installation seat (10) in a rotating mode, a convex block (12) and a tension spring (13) are fixedly installed on one side, close to the cam disc (9), of the convex block (12) far away from the connecting rod (11) and abutted to, one end of the extension spring (13) far away from the connecting rod (11) is fixedly connected with the inner wall of the installation shell (1), one end of the connecting rod (11) far away from the installation seat (10) is provided with an opening for the elastic rope (5) to pass through, the bottom of the installation shell (1) is provided with a through hole for the elastic rope (5) to pass through, one end of the elastic rope (5) passing through the opening and the through hole extends to the position under the installation shell (1), a tennis ball (14) is fixedly installed, a gear (15) is fixedly installed on the rotating shaft (3), a threaded through hole is formed in one side of the installation shell (1), a threaded rod (17) is connected to the internal thread of the threaded through hole, one end of the threaded rod (17) extending to the inside of the installation shell (1) is rotatably connected with a rack (16), and the rack (16) is meshed with the gear (.

2. The tennis training aid of claim 1, wherein the mounting ears (2) are fixedly mounted on both sides of the mounting shell (1), and the mounting ears (2) are made of stainless steel.

3. Tennis training aid according to claim 1, characterized in that a rotating handwheel (8) is fixedly connected to the end of the rotating shaft (3) extending to the outside of the mounting housing (1), said rotating handwheel (8) being located at the top of the mounting housing (1).

4. A tennis training aid as claimed in claim 3, wherein the hand wheel (8) is provided with a handle, and the handle is covered with an anti-slip leather sheath.

5. The tennis training aid as claimed in claim 1, wherein a stopper (18) is fixedly mounted on the rack (16), and a sliding opening for sliding the stopper (18) is formed on an inner top wall of the mounting shell (1).

6. A tennis training aid according to claim 1, wherein a turning block is fixedly connected to the end of the threaded rod (17) extending outside the mounting housing (1), said turning block being located on one side of the mounting housing (1).