TWI747203B - Fan wheel structure of exercise bicycle - Google Patents

Abstract

A fan wheel structure of exercise bicycle, which includes a fan wheel and a plurality of fan blades, the fan wheel is equidistantly defined with locking notches concave from the circumferential surface thereof and a plurality of fixing holes surrounding the fan wheel and adjacent the locking notches, each locking notch and the corresponding fixing hole are arranged along the radial direction of the fan wheel, each fan blade has an interface and a fixing convex in the interface, each fan blades is fixed in the locking notch through the interface, and the fixing convex can be locked in the fixing hole, so that the fan blades are more firmly fixed on the fan wheel.

Description

Fan wheel group structure of exercise bike and manufacturing method of fan wheel group

The present invention relates to the technical field of fitness equipment, in particular to a fan wheel structure of an exercise bike.

The present invention also relates to the manufacturing method of the aforementioned fan wheel set.

Modern society pays more and more attention to the maintenance of physical appearance. Therefore, many people will go to the gym for aerobic exercise or heavy training during leisure time such as after get off work, after class, and holidays. There are many different types of fitness equipment in the gym. Fitness equipment usually uses pulleys, rods, rockers... and other components to form various types of fitness equipment, so that users can choose the right one for the muscle group they want to train. Fitness Equipment.

Taking exercise bikes as an example, in order to allow users to simulate the resistance experienced by riding a bicycle outdoors, a resistance system is usually added to the exercise bike. The wind resistance system is the most common one, such as the exercise bike disclosed in the Chinese Patent Authorization Announcement No. CN2428163Y The resistance wheel, when the pedaling exercise bike drives the resistance wheel to rotate, the fan blades on the resistance wheel will generate wind resistance, thereby providing resistance when the user is stepping on it.

Generally, the resistance wheel of a wind resistance exercise bike is equipped with multiple fan blades. The fan blades are usually fixed to the resistance wheel by welding. However, the edges of the fan blades are only fixed to the resistance by welding. The edges of the wheels are not stable. In view of this, it is indeed necessary to provide a technical means to solve the problem that the fan blades of the resistance wheels of exercise bikes are relatively unstable by welding.

The purpose of the present invention is to solve the problem that the fan blades of the resistance wheel are relatively unstable by welding.

In order to achieve the foregoing objective, the present invention is a fan wheel structure for an exercise bike, comprising: a fan wheel having an annular peripheral surface, a plurality of clamping notches recessed at equal intervals from the peripheral surface, and corresponding cards A plurality of fixing holes with a notch, each of the clamping notch and the corresponding fixing hole are arranged along the radial direction of the fan wheel; and a plurality of fan blades, each of the fan blades has an interface, and each interface connects the fan The blades are divided into an upper part and a lower part. The lower part has an inner surface facing the interface. The inner surface of each fan blade is protruded with a fixing protrusion, and the interface of each fan blade is clamped to one of the clamping systems. Notches, and the fixing protrusions are respectively clamped to the corresponding fixing holes.

In a preferred embodiment, each of the locking notches and each of the fixing holes are radially arranged on the fan wheel.

In a preferred embodiment, the interface is recessed from one edge of the fan blade.

In a preferred embodiment, the circumferential surface of the fan wheel is recessed with a plurality of gaps at equal intervals.

In a preferred embodiment, there is a gap between every two of the locking notches, and each of the locking notches is staggered with each of the gaps and arranged around the fan wheel.

In a preferred embodiment, the opening width of each interface tapers from the edge toward the fixing protrusion.

In order to achieve the foregoing objective, the present invention has another method for manufacturing a fan wheel structure of an exercise bike, which includes: an opening step of providing a base plate, and the plurality of clamping notches are recessed at equal intervals from the annular peripheral surface of the base plate, and Surround the base plate and open the plurality of fixing holes at positions corresponding to each of the clamping notches to form the fan wheel; a combination step is to provide the plurality of fan blades, and each interface of the fan blade is connected to one of the cards. The notch combination is made, and the fixing protrusions of the fan blades correspond to the fixing holes respectively; a punching step is to punch the lower part of the fan blade so that the fixing protrusions of the fan blades are clamped in the corresponding fixing holes.

Each fan blade is fixed on the clamping notch of the fan wheel in a clamping manner by the interface, and fixed in the fixing hole by the fixing protrusion, so as to solve the problem of the instability of the fan blade being fixed on the fan wheel by welding. .

What’s better is that by opening a plurality of expansion gaps on the fan wheel, the fan wheel and fan blades can be prevented from being deformed during the machining process during the forming process of the fan wheel and fan blades, thereby maintaining the smooth surface of the fan wheel. Make sure it is stable and does not shake during rotation.

10: Fan wheel

11: Surrounding

12: Card system gap

13: Fixing hole

14: gap

15: base plate

20: Fan blades

21: Interface

22: upper part

23: lower part

231: Inside

24: fixed convex

30: Opening step

50: Combination steps

60: Stamping step

Figure 1 is a perspective view of the present invention in a preferred embodiment; Figure 2 is an exploded view of the present invention in a preferred embodiment; Figure 3 is a side view of the fan blade in a preferred embodiment of the present invention; Figure 4 is a cross-sectional view of the fan blades assembled on the fan wheel in a preferred embodiment of the present invention; Figure 5 is a punching of the lower part of the fan blades in a preferred embodiment of the present invention, so that the fixing protrusions are clamped in the fixing holes A cross-sectional view inside; FIG. 6 is a flowchart of a method for manufacturing a fan wheel structure of an exercise bike in a preferred embodiment of the present invention.

1 to 5, the present invention is a fan wheel structure of an exercise bike, which is mainly composed of a fan wheel 10 and a plurality of fan blades 20, wherein: the fan wheel 10 is generally in the shape of a pie and has a ring shape A peripheral surface 11, the fan wheel 10 is recessed with a plurality of clamping notches 12 at equal intervals from the peripheral surface 11, and the fan wheel 10 is further provided with a plurality of fixing holes 13, each of the fixing holes 13 corresponds to one of the The locking notches 12, each of the locking notches 12 and the corresponding fixing holes 13 are arranged along the radial direction of the fan wheel 10, so that the locking notches 12 and the fixing holes 13 are arranged radially in the The fan wheel 10 is on.

Each fan blade 20 has an interface 21. The interface 21 is recessed from one of the edges of the fan blade 20. The fan blade 20 is divided into an upper part 22 and a lower part 23 by the interface 21. The lower part 23 has an orientation An inner surface 231 of the interface 21, an inner surface 231 of each fan blade is respectively provided with a fixing protrusion 24, the interface 21 of each fan blade 20 is respectively clamped in one of the clamping notches 12, and each of the fixing The protrusions 24 are respectively clamped in the corresponding fixing holes 13.

In this embodiment, the fan wheel 10 is recessed with a plurality of gaps 14 at equal intervals from the peripheral surface 11, and there is a gap 14 between every two of the clamping notches 12, so that each of the clamping notches 12 and each of the The gaps 14 are staggered and arranged around the fan wheel 10; when the fan blades 20 are assembled to the fan wheel 10, if the fan wheel 10 expands, it will expand and deform first from the gaps 14, thereby preventing the fan The circumferential surface 11 of the wheel 10 is deformed, thereby maintaining the circumferential surface 11 of the fan wheel 10 smooth.

In particular, the opening width of each interface 21 is tapered inward, so that the interface 21 is generally tapered when viewed from the side of the fan blade 20. In this way, when the end of the interface 21 of the fan blade 20 is attached to the fan wheel 10, its tapered shape enables the fan blade 20 to be more tightly clamped on the fan wheel 10.

The above is the structure configuration and connection relationship of the present invention, and the forming method of the present invention is as follows: Please refer to FIG. 50 and a stamping step 60, wherein: in the opening step 30, a base 15 is provided, and the plurality of clamping notches 12 are recessed at equal intervals from the peripheral surface 11 surrounding the base 15 to surround the base 15 and correspond to The position of each clamping notch 12 is provided with the plurality of fixing holes 13, each of the clamping notches 12 and the corresponding fixing hole 13 are arranged along the radial direction of the base plate 15 to form the fan wheel 10; the base plate 15 The plurality of gaps 14 are recessed at equal intervals around the peripheral surface 11. The material deformation caused by the combination step 50 and the stamping step 60 will be deformed first from the position of each gap 14, thereby preventing the fan wheel The edge of the fan 10 is deformed to maintain the smoothness of the peripheral surface 11 of the fan wheel 10.

In the combination step 50, the plurality of fan blades 20 are provided, and the interface 21 of each fan blade 20 is combined with one of the clamping notches 12 respectively. The method of combination is to connect the interface 21 to the clamping notch 12. The fixing protrusions 24 of each fan blade 20 correspond to each of the fixing holes 13; in the punching step 60, the lower part 23 of the fan blade 20 is punched by a punching machine so that the lower part 23 faces the fan wheel 10 deforms, and the fixing protrusion 24 is clamped in the corresponding fixing hole 13.

Fan wheel 10 Circumference 11 Card system gap 12 Fixing hole 13 Gap 14 Fan blade 20

Claims (7)

A fan wheel structure of an exercise bike includes: a fan wheel with an annular peripheral surface, a plurality of locking notches recessed at equal intervals from the peripheral surface, and a plurality of fixing holes corresponding to each of the locking notches, Each of the clamping notches and the corresponding fixing holes are arranged along the radial direction of the fan wheel; and a plurality of fan blades, each of the fan blades has an interface, and each interface divides the fan blade into an upper part and a lower part , The lower part has an inner surface facing the interface, the inner surface of each fan blade is respectively provided with a fixing protrusion, the interface of each fan blade is respectively clamped in one of the clamping notches, and each of the fixing protrusions is respectively It is clamped to the corresponding fixing hole. According to claim 1, the fan wheel structure of an exercise bike, wherein each of the clamping notches and each of the fixing holes are radially arranged on the fan wheel. The fan wheel structure of an exercise bike according to claim 1, wherein the interface is recessed from one edge of the fan blade. The fan wheel structure of an exercise bike according to claim 1, wherein the circumferential surface of the fan wheel is recessed with a plurality of gaps at equal intervals. The fan wheel structure of an exercise bike according to claim 4, wherein there is a gap between every two of the locking notches, and each of the locking notches is staggered with each of the gaps and arranged around the fan wheel. According to claim 1, the fan wheel structure of an exercise bike, wherein the opening width of each interface tapers from the edge toward the fixed protrusion. A method for manufacturing a fan wheel structure of an exercise bike according to claim 1, comprising: An opening step is to provide a base plate. The plurality of clamping notches are recessed at equal intervals from the annular peripheral surface of the base plate, and a plurality of gaps are recessed at equal intervals around the peripheral surface of the base plate. The position of the clamping notch is provided with the plurality of fixing holes to form the fan wheel; a combination step is to provide the plurality of fan blades, and the interface of each fan blade is combined with one of the clamping notches, and each fan The fixing protrusions of the blades respectively correspond to the fixing holes; in a punching step, the lower part of the fan blade is punched so that the fixing protrusions of the fan blades are clamped in the corresponding fixing holes.

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