CN220588889U - Wind resistance adjusting structure of wind resistance swimming device - Google Patents

Abstract

The utility model relates to the technical field of windage swimmers and discloses a windage swimmer windage adjusting structure which comprises a support frame, wherein a guy cable is wound at the outer end of a wire roller, extends outwards from the outer end of the wire roller, passes through a first guide wheel and surrounds a half circle and then extends downwards, then passes through a second guide wheel and surrounds a half circle, the guy cable is wound between the first guide wheel and the second guide wheel for a plurality of times, and the outer end of a wind cover is connected with a windage adjusting structure for adjusting windage. This windage swimming ware windage regulation structure is prone on the cushion top through the user to adjust the cushion to suitable position after, place the handle top surface with the hand, and stretch into spacing card with wrist part in, afterwards adjust air regulation mechanism, adjust the windage, and then realize many resistances and temper, later with breaststroke swimming appearance swing arm, can drive the handle at the in-process of swing arm and take place to slide, the slide bar can take place to rotate simultaneously, and then the winding cable of pulling line roller outer end, and then drive the wind wheel and rotate, thereby temper.

Description

Wind resistance adjusting structure of wind resistance swimming device

Technical Field

The utility model relates to the technical field of windage swimming devices, in particular to a windage swimming device windage adjusting structure.

Background

With the increase of the material level, people pay more attention to the physical health and the beauty of the body. Swimming is an effective systemic body-building mode, in particular to breaststroke which has good effects on developing muscle groups of human bodies, strengthening bodies and shaping bodies, can help people to correct certain abnormal body shapes, and can lead organisms and muscles of all parts of the bodies to be evenly and comprehensively developed. However, swimming has high requirements on environments such as temperature, places and the like, the fixed cost of sports is high, and swimming is a sport with high technical requirements, and particularly, a person who does not know the swimming technology can hardly complete the sport.

For professional swimming athletes, the muscles of the swimming athletes, including upper body muscle groups such as back muscles, deltoid muscles, biceps brachii, pectoral muscles and the like, are firstly required to be exercised, and when the swimming athletes exercise in a swimming pool anytime and anywhere, a lot of inconvenience is brought to the swimming athletes, the dependence on the swimming pool is higher, the resistance of the pool water in the swimming pool is generally not changed, and the requirements of the athletes on different resistance training cannot be met.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a wind resistance adjusting structure of a wind resistance swimming device, which has the advantages of meeting the training of athletes on different resistances and the like, and solves the technical problems.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a windage swimming device windage regulation structure, includes the support frame, support frame top surface middle-end is connected with adjustable cushion, support frame end fixedly connected with carriage, carriage is connected with a plurality of slide bars towards support frame one side terminal surface, the slide bar outer end is connected with the handle, handle is connected with the cable towards carriage one side middle-end, and the cable link up the carriage, the carriage top surface is connected with the leading wheel that leads to the cable, carriage inner wall bottom surface middle-end is connected with the fan housing, the fan housing both sides link up the round hole, and fan housing terminal opening part is connected with the air-out net, carriage inner wall side connection dwang, the dwang outer end is connected with the wire roller that carries out the rolling to the cable, the cable twines in the wire roller outer end, outwards extends from the wire roller outer end to pass the first guide pulley upper surface that installs in carriage inner wall top and encircle half circle back down extension, later pass the second guide pulley lower surface that installs in carriage inner wall bottom and encircle half circle back, the cable twines between first guide pulley and second guide pulley and guarantee to pull the fan housing, can drive the fan housing and carry out the wind turbine in the fan housing when the inner wall side is connected with the fan housing, the fan housing inner wall end is connected with the baffle outside the baffle when the fan housing is connected with the fan housing, the fan housing outside both sides is connected with the baffle.

As the preferable technical scheme of the utility model, the number of the sliding rods is two, the outer end surfaces of the sliding rods are smooth, the supporting frame is provided with a bulge corresponding to the sliding rods, the sliding rods are rotationally connected with the bulge, and the handle is slidably connected with the outer ends of the sliding rods.

As the preferable technical scheme of the utility model, the top end of the grip is provided with a concave limiting clamp for limiting the wrist of a user, and the limiting clamp is made of elastic materials.

As the preferable technical scheme of the utility model, the tail end of the guy cable is fixedly arranged on the end face of the handle, which faces one side of the supporting frame, the guy cable is made of a material with high rigidity strength, the guide wheel is rotationally connected to the top of the supporting frame and limits the guy cable, the guy cable is attached to the surface of the guide wheel, the guy cable is in rolling connection with the first guide wheel and the second guide wheel, and the first guide wheel and the second guide wheel are both in rotary connection with the supporting frame.

As a preferable technical scheme of the utility model, the rotating rod is rotatably connected to the inner wall of the supporting frame, a scroll spring is stretched at the rotating shaft of the rotating rod and used for resetting the rotation of the rotating rod, and a wire roller is fixedly arranged at the outer end of the rotating rod.

As the preferable technical scheme of the utility model, the fan housing is fixedly arranged at the middle end of the top surface of the inner wall of the supporting frame, an air outlet net is detachably connected at the outlet of the fan housing towards one side of the supporting frame, a baffle is rotatably connected at the middle end of the inner wall of the fan housing, and the baffle is fixedly connected with the rotating rod.

As the preferable technical scheme of the utility model, wind wheels are fixedly connected to two sides of the partition plate, and each wind wheel consists of a plurality of inclined wind blades.

As the preferable technical scheme of the utility model, the wind power adjusting structure comprises an air inlet net, blocking sheets, an adjusting ring and a limiting ring, wherein the air inlet net is detachably connected to round holes on two sides of the air cover, a plurality of groups of openings are formed in the circumferential array on the surface of the air inlet net, the limiting ring is fixedly arranged at the outer end of the air cover, a circular chute is formed in the outward end face of the limiting ring, the adjusting ring is connected in the chute in a sliding manner, an annular damping ring is arranged in the circular chute of the limiting ring, the inner end face of the adjusting ring is connected with the blocking sheets, the blocking sheets are attached to the air inlet net and slide relatively with the air inlet net, the number of the blocking sheets corresponds to the number of groups of through holes on the surface of the air inlet net, and the blocking sheets and the rotating rod do not generate power transmission.

As a preferable technical scheme of the utility model, the rotating angle of the blocking piece and a plurality of groups of openings at the outer end of the air inlet net are matched with each other, so that the resistance level can be adjusted.

As the preferable technical scheme of the utility model, the wind power adjusting structure comprises a wind blocking cover, an adjusting handle and an adjusting clamp, wherein the wind blocking cover is rotatably connected to the tail end air outlet of the wind cover and covers the air outlet of the wind cover, the adjusting handle is fixedly arranged at the positions of the wind blocking cover and the axis of a wind cover rotating shaft, the adjusting clamp made of a plurality of elastic materials is arranged at the outer end of the wind cover corresponding to the wind blocking cover rotating shaft, a wavy through groove is formed at the outer end of the wind blocking cover corresponding to the adjusting clamp, the diameter of the wavy groove is the same as the diameter of the adjusting clamp at the maximum, and the opening and closing angle of the wind blocking cover can be adjusted when the wind blocking cover is rotated.

Compared with the prior art, the utility model provides a wind resistance adjusting structure of a wind resistance swimming device, which has the following beneficial effects:

1. according to the utility model, a user lies prone on the top end of the cushion, after the cushion is adjusted to a proper position, the hand is placed on the top surface of the grip, the wrist part extends into the limiting clamp, then the air quantity adjusting mechanism is adjusted to adjust wind resistance, so that multi-resistance exercise is realized, the arm is swung by breaststroke stroke gesture, the grip is driven to slide in the swing arm process, meanwhile, the sliding rod rotates to fit with a standard stroke gesture, and then the inhaul cable wound at the outer end of the wire roller is pulled, so that the wind wheel is driven to rotate, wind resistance is generated, and thus exercise is performed.

Drawings

FIG. 1 is a schematic perspective view of the structure of the present utility model;

FIG. 2 is a perspective view of a wind resistance adjusting structure according to an embodiment of the present utility model;

FIG. 3 is a schematic top view of the structure of the present utility model after the grip is installed;

FIG. 4 is a schematic perspective view of a second wind resistance adjusting mechanism according to an embodiment of the present utility model;

fig. 5 is an enlarged partial schematic view of the structure of the present utility model at a in fig. 4.

Wherein: 1. a support frame; 2. a support frame; 3. a cushion; 4. a fan housing; 5. an air outlet net; 6. a slide bar; 7. a grip; 8. a guy cable; 9. a guide wheel; 10. a partition plate; 11. a rotating lever; 12. a wire roller; 13. a wind wheel; 14. an air inlet net; 15. a barrier sheet; 16. an adjusting ring; 17. a limiting ring; 18. the first guide wheel; 19. the second guide wheel; 20. a wind blocking cover; 21. adjusting the grip; 22. and (5) adjusting the card.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-5, a wind resistance adjusting structure of a wind resistance swimming device comprises a supporting frame 1, an adjustable cushion 3 is connected with the middle end of the top surface of the supporting frame 1, the tail end of the supporting frame 1 is fixedly connected with a supporting frame 2, one side end face of the supporting frame 2 facing the supporting frame 1 is connected with a plurality of sliding rods 6, the outer ends of the sliding rods 6 are connected with handles 7, the middle end of one face of each handle 7 facing the supporting frame 2 is connected with a guy rope 8, the guy rope 8 penetrates through the supporting frame 2, the top surface of the supporting frame 2 is connected with a guide wheel 9 for guiding the guy rope 8, the middle end of the bottom surface of the inner wall of the supporting frame 2 is connected with a fan housing 4, two sides of the fan housing 4 penetrate through round holes, an air outlet net 5 is connected with the tail end opening of the fan housing 4, the side surface of the inner wall of the supporting frame 2 is connected with a rotating rod 11, the outer end of the rotating rod 11 is connected with a wire roller 12 for winding the inhaul cable 8, the inhaul cable 8 is wound at the outer end of the wire roller 12, extends outwards from the outer end of the wire roller 12, penetrates through the upper surface of a first guide wheel 18 arranged at the top end of the inner wall of the supporting frame 2 and extends downwards after encircling a half circle, penetrates through the lower surface of a second guide wheel 19 arranged at the bottom end of the inner wall of the supporting frame 2 and encircles a half circle, the inhaul cable 8 is wound between the first guide wheel 18 and the second guide wheel 19 for a plurality of times, the wire roller 12 can be driven to rotate when the inhaul cable 8 is pulled, the middle end of the inner wall of the fan housing 4 is connected with a partition board 10, the outer ends of two sides of the partition board 10 are connected with wind wheels 13, and the outer end of the fan housing 4 is connected with a wind power adjusting structure for adjusting wind resistance.

Further, the number of the sliding rods 6 is two, the outer end faces of the sliding rods 6 are smooth, protrusions exist at positions, corresponding to the sliding rods 6, of the supporting frame 2, the sliding rods 6 are in rotary connection with the protrusions, the handles 7 are slidably connected to the outer ends of the sliding rods 6, when the user exercises, the user sits or lies prone on the top of the seat cushion 3, after the seat cushion 3 is adjusted to a proper position, the hands are placed on the top face of the handles 7, the top of the handles 7 are provided with a concave limiting clamp, wrist parts extend into the limiting clamp, the user is limited by the limiting clamp, the limiting clamp is made of an elastic material, falling off can not occur when the user exercises, after the user lies prone, the user swings the user back to the arms through breaststroke gestures, the user can guarantee full extension of the user arms due to the rotation of the sliding rods 6, and meanwhile, the user can control multiple angles in the swing arm.

Further, can drive handle 7 at the in-process of swing arm and take place to slide, and then pulling cable 8, the terminal fixed mounting of cable 8 is in handle 7 orientation braced frame 2 one side terminal surface, cable 8 other end winding rolling and line roller 12 outer end, cable 8 is the high material of rigidity intensity, leading wheel 9 rotates and connects in braced frame 2 top, and spacing to cable 8, cable 8 and leading wheel 9 surface laminating, because during the swing arm, can change the atress angle to cable 8, so be provided with leading wheel 9 for adjust the atress direction of cable 8 when the swing arm, guaranteed simultaneously that the atress direction of cable 8 changes.

Further, the spiral spring stretches at the rotating shaft of the rotating rod 11, the rotating rod 11 can be guaranteed to be recycled when the rotating rod rotates, so that tightening of the inhaul cable 8 is guaranteed, after the inhaul cable 8 is stretched, the wire roller 12 at the outer end of the rotating rod 11 can be stretched, the wire roller 12 and the rotating rod 11 are driven to rotate, the wind wheel 13 is driven to rotate, wind resistance is further generated, the purpose of resisting exercise is achieved, the wind resistance can be adjusted according to rotation of the wind force adjusting structure, and therefore the effect of exercising with different resistances is achieved.

Embodiment one:

as shown in fig. 2 and 3, the wind power regulation structure includes air inlet net 14, stop piece 15, regulation circle 16 and spacing ring 17, fan housing 4 fixed mounting is in the inner wall top surface middle-end of braced frame 2, fan housing 4 is to support frame 1 one side exit detachable be connected with air-out net 5, fan housing 4 both sides round hole department can dismantle be connected with air inlet net 14, fan housing 4 can follow the entering of air inlet net 14 department of fan housing 4 both sides through the rotation of wind wheel 13, it discharges the air current from air-out net 5 department, air inlet net 14 has the multiunit opening, there is a plurality of and each group opening part contained angle the same in the opening of air inlet net 14 surface, fan housing 4 inner wall middle-end rotates and is connected with baffle 10, be fixed connection between baffle 10 and the dwang 11, when dwang 11 rotates, thereby the rotation that can drive baffle 10 drives wind wheel 13, baffle 10 both sides fixedly connected with wind wheel 13, wind wheel 13 comprises a plurality of slope wind pieces, wind piece can contact with air in the process that wind wheel 13 rotates, and take the air to air net 5 departments, simultaneously inside produces the rotation speed, inside because of the inside produces the air current, the inside reduces the inside, and the inside air current resistance is reduced, and the inside wind resistance 15 is rotated, and then the inside is adjusted, and the air current resistance is perpendicular to the inside is guaranteed, and is realized, and the inside wind resistance is adjusted, and is rotated, and is inside, and is 13.

Further, the limiting ring 17 is located at the outer end of the fan housing 4 and corresponds to the outer end of the air inlet net 14, meanwhile, the outer end face of the limiting ring 17 is close to the outer end face of the air inlet net 14, a circular chute is formed in the outer end face of the limiting ring 17, an adjusting ring 16 is connected in the chute in a sliding mode, the adjusting ring 16 can rotate at any angle in the chute of the limiting ring 17, meanwhile, an annular damping ring is arranged in the circular chute of the limiting ring 17, the adjusting ring 16 can be stopped at any time in the rotating process of the adjusting ring 16, the adjusting ring 16 is connected with the blocking pieces 15, the blocking pieces 15 are attached to the air inlet net 14 and can slide relatively with the air inlet net 14, the number of the blocking pieces 15 corresponds to the number of groups of through holes on the surface of the air inlet net 14, each blocking piece 15 can be guaranteed to pass through correspondingly one group, accordingly, the blocking pieces 15 do not rotate along with the rotation of the rotating rod 11, the blocking pieces 15 are enabled to correspond to each group of through holes of the air inlet net 14, the cross section of the air inlet net 14 is changed, under the condition that the air is discharged by the wind wheel 13, the condition that the air quantity is not changed, the air quantity of the air inlet net 14 is simultaneously is enabled to be changed, and the wind capacity is required to be adjusted, and the wind capacity is further, the wind capacity is 8 is required to be adjusted.

Further, when the blocking sheet 15 is rotated, the opening part of the air inlet net 14 is gradually blocked by the blocking sheet 15 along with the rotation, so that the section of the air inlet is reduced, the resistance is increased, the number of the openings is increased due to the reverse rotation, the increase of the section of the air inlet is ensured, and the resistance is reduced.

Embodiment two:

as shown in fig. 1, fig. 4 and fig. 5, the wind power adjusting structure comprises a wind blocking cover 20, an adjusting handle 21 and an adjusting clamp 22, wherein the wind blocking cover 20 is rotationally connected to the air outlet at the tail end of the wind cover 4 and covers the air outlet of the wind cover 4, the adjusting handle 21 is fixedly installed at the positions of the wind blocking cover 20 and the axis of the rotating shaft of the wind cover 4, the adjusting clamp 22 made of a plurality of elastic materials is arranged at the positions of the outer end of the wind cover 4 corresponding to the rotating shaft of the wind blocking cover 20, wavy through grooves are formed at the positions of the outer end of the wind blocking cover 20 corresponding to the adjusting clamp 22, the diameter of each wavy through groove is the same as the diameter of the corresponding adjusting clamp 22, when wind power is adjusted, the wind blocking cover 20 can rotate through rotating the adjusting handle 21, so that the wavy through grooves formed at the outer end of the wind blocking cover 20 rotate coaxially, the adjusting clamp 22 is extruded by the narrow parts of the wavy grooves and enters into the inner parts of different groove walls, so that the opening and closing angles of the wind blocking cover 20 are adjusted, when the included angles of the wind blocking cover 20 and the wind outlet are smaller, wavy through grooves are formed in the corresponding to the positions, the corresponding to the adjusting clamp 22, the wavy through grooves are formed by the adjusting grooves, and the diameter of the wavy through grooves are formed by the adjusting grooves, and the maximum pulling force is required to be provided, when the pulling force of the wind blocking cover 20 and the wind blocking cover is larger.

When the multifunctional ice cream is used, the user lies prone on the top end of the cushion 3, after the cushion 3 is adjusted to a proper position, the user places hands on the top surface of the grip 7, stretches the wrist part into the limiting clamp, then adjusts the air quantity adjusting mechanism to adjust wind resistance, further achieves multi-resistance exercise, swings the arm in a breaststroke stroke gesture, can drive the grip 7 to slide in the swing arm process, simultaneously rotates the sliding rod 6 to fit a standard stroke gesture, further pulls the inhaul cable 8 wound on the outer end of the thread roller 12, further drives the wind wheel 13 to rotate, and generates wind resistance, so that exercise is performed.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a windage swimming device windage regulation structure, includes support frame (1), support frame (1) top surface middle-end is connected with adjustable cushion (3), support frame (1) end fixedly connected with braced frame (2), its characterized in that: the supporting frame (2) is connected with a plurality of sliding rods (6) towards one side end face of the supporting frame (1), the outer ends of the sliding rods (6) are connected with handles (7), the middle ends of the faces of the handles (7) towards the supporting frame (2) are connected with inhaul cables (8), the inhaul cables (8) penetrate through the supporting frame (2), the top face of the supporting frame (2) is connected with a guide wheel (9) for guiding the inhaul cables (8), the middle ends of the bottom face of the inner wall of the supporting frame (2) are connected with a fan housing (4), two sides of the fan housing (4) penetrate through round holes, an air outlet net (5) is connected at the tail end opening of the fan housing (4), the side faces of the inner wall of the supporting frame (2) are connected with rotating rods (11), the outer ends of the rotating rods (11) are connected with wire rollers (12) for winding the inhaul cables (8), the inhaul cables (8) are wound on the outer ends of the wire rollers (12), extend outwards from the outer ends of the wire rollers (12) and penetrate through the upper surfaces of first guide wheels (18) mounted on the inner wall tops of the supporting frame (2) and encircle the half rings, then extend downwards and penetrate through the second guide wheels (19) and encircle the second guide wheels (19) and are mounted on the lower surfaces of the second guide wheels (18), can guarantee to drive wire roller (12) and rotate when pulling cable (8), fan housing (4) inner wall middle-end is connected with baffle (10), baffle (10) both sides outer end all is connected with wind wheel (13), fan housing (4) outer end is connected with the wind-force regulation structure that is used for adjusting the windage.

2. A windage swimmer windage adjustment structure in accordance with claim 1, characterized in that: the number of the sliding rods (6) is two, the outer end faces of the sliding rods (6) are smooth, protrusions are arranged at the positions, corresponding to the sliding rods (6), of the supporting frame (2), the sliding rods (6) are in rotary connection with the protrusions, and the handles (7) are in sliding connection with the outer ends of the sliding rods (6).

3. A windage swimmer windage adjustment structure in accordance with claim 2, characterized in that: the top end of the handle (7) is provided with a concave limiting clamp used for limiting the wrist of a user, and the limiting clamp is made of elastic materials.

4. A windage swimmer windage adjustment structure according to claim 3, characterized in that: the end of the guy cable (8) is fixedly arranged on one side end face of the handle (7) towards the supporting frame (2), the guy cable (8) is made of materials with high rigidity intensity, the guide wheel (9) is rotationally connected to the top of the supporting frame (2), the guy cable (8) is limited, the guy cable (8) is attached to the surface of the guide wheel (9), the guy cable (8) is in rolling connection with the first guide wheel (18) and the second guide wheel (19), and the first guide wheel (18) and the second guide wheel (19) are both rotationally connected with the supporting frame (2).

5. A windage swimmer windage adjustment structure in accordance with claim 1, characterized in that: the rotary rod (11) is rotationally connected to the inner wall of the supporting frame (2), a spiral spring is stretched at the rotary shaft of the rotary rod (11) and used for resetting the rotation of the rotary rod (11), and a wire roller (12) is fixedly arranged at the outer end of the rotary rod (11).

6. A windage swimmer windage adjustment structure in accordance with claim 1, characterized in that: the fan housing (4) fixed mounting is in the middle-end of carriage (2) inner wall top surface, fan housing (4) are connected with air-out net (5) towards support frame (1) one side exit detachably, the rotation of fan housing (4) inner wall middle-end is connected with baffle (10), be fixed connection between baffle (10) and dwang (11).

7. A windage swimmer windage adjustment structure in accordance with claim 6, wherein: wind wheels (13) are fixedly connected to two sides of the partition plate (10), and each wind wheel (13) consists of a plurality of inclined wind blades.

8. A windage swimmer windage adjustment structure in accordance with claim 1, characterized in that: the wind power adjusting structure comprises an air inlet net (14), a blocking piece (15), an adjusting ring (16) and a limiting ring (17), wherein the air inlet net (14) is detachably connected to round holes on two sides of the air cover (4), a plurality of groups of openings are formed in the circumferential array on the surface of the air inlet net (14), the limiting ring (17) is fixedly arranged at the outer end of the air cover (4), a circular sliding groove is formed in the outer end face of the limiting ring (17), the adjusting ring (16) is connected in the sliding groove in a sliding manner, an annular damping ring is arranged in the circular sliding groove of the limiting ring (17), the blocking piece (15) is attached to the air inlet net (14) and slides relatively with the air inlet net (14), the blocking piece (15) corresponds to the number of groups of through holes on the surface of the air inlet net (14), and the blocking piece (15) does not generate power transmission with the rotating rod (11).

9. A windage swimmer windage adjustment structure in accordance with claim 8, wherein: the rotating angle of the blocking piece (15) and a plurality of groups of openings at the outer end of the air inlet net (14) are matched with each other, so that the resistance level can be adjusted.

10. A windage swimmer windage adjustment structure in accordance with claim 1, characterized in that: the wind power adjusting structure comprises a wind blocking cover (20), an adjusting handle (21) and an adjusting clamp (22), wherein the wind blocking cover (20) is rotationally connected to the tail end air outlet of the wind cover (4) and covers the air outlet of the wind cover (4), the adjusting handle (21) is fixedly arranged at the axial center of a rotating shaft of the wind blocking cover (20) and the wind cover (4), a plurality of adjusting clamps (22) made of elastic materials are arranged at the outer end of the wind cover (4) corresponding to the rotating shaft of the wind blocking cover (20), wavy through grooves are formed at the outer end of the wind blocking cover (20) corresponding to the adjusting clamps (22), the diameters of the wavy grooves are the same as each other at the maximum, and the opening and closing angles of the wind blocking cover (20) can be adjusted when the wind blocking cover (20) is rotated.