Pedal for bicycle

Abstract

The pedal for a bicycle according to the present invention can accurately measure the amount of exercise of a bicycle rider, and includes: a housing that can rotate based on a main shaft; a top plate that is connected to the housing through a pivot and can rotate based on the pivot; a displacement generating assembly that is disposed inside the housing and generates displacement according to the rotation of the top plate by being connected to the housing and the top plate; and a sensor unit that detects the displacement by being connected to the displacement generating assembly.

Description

Technical Field

[0001] The present invention relates to a pedal for a bicycle, and more particularly to a pedal for a bicycle capable of accurately measuring the amount of exercise of a cyclist. Background Art

[0002] Cycling is an aerobic exercise that enhances cardiopulmonary function, like other aerobic exercises such as walking and running. Since cycling is more interesting than other exercises, it is a very beneficial exercise that can improve mood while engaging in physical activity for health. In particular, cycling can be performed not only outdoors but also indoors. Cycling helps improve the physical strength of people with weak lower limb muscles, those with poor joints or lumbar regions, and osteoporosis patients.

[0003] In indoor cycling, the amount of exercise of the cyclist can be adjusted by adjusting the load. For example, if the load is increased, the cyclist needs to pedal the bicycle pedal with greater force. That is, a greater pressure will be applied to the bicycle pedal. In the prior art, the amount of exercise of the cyclist is calculated by the rotational speed (RPM, Revolutions Per Minute) of the bicycle pedal. However, the force with which the cyclist pedals the bicycle pedal can vary depending on the load of the bicycle. Depending on the force with which the cyclist pedals the pedal, the amount of exercise of the cyclist further increases. Therefore, in the prior art, there is a problem that the amount of exercise of the cyclist cannot be accurately calculated.

[0004] Even when cycling outdoors, the amount of exercise of the cyclist will be different when cycling uphill and on flat ground. Assuming that the bicycle pedal rotates at the same rotational speed (RPM), the cyclist needs to pedal the bicycle pedal with greater force when going uphill. Therefore, even for a bicycle traveling outdoors, there is a problem that an accurate amount of exercise cannot be calculated when measuring the amount of exercise only by the rotational speed (RPM) of the bicycle pedal. Summary of the Invention

[0005] An object of an embodiment of the present invention is to provide a pedal for a bicycle capable of accurately calculating the amount of exercise of a cyclist.

[0006] To achieve the above object, a pedal for a bicycle according to an embodiment of the present invention is characterized in that it includes: a housing that can rotate based on a main shaft; a top plate that is connected to the housing through a pivot and can rotate based on the pivot; a displacement generating assembly disposed inside the housing and connected to the housing and the top plate to generate displacement according to the rotation of the top plate; and a sensor unit that detects the displacement by being connected to the displacement generating assembly.

[0007] Moreover, the present invention is characterized in that the sensor unit moves along a specified trajectory between the housing and the top plate by means of a displacement generating assembly.

[0008] Moreover, the present invention is characterized in that the trajectory of the sensor unit is parallel to the pivot axis.

[0009] Moreover, the present invention is characterized in that the pivot axis is parallel to the main axis.

[0010] Moreover, the present invention is characterized in that the displacement generating assembly includes: a driving part connected to the top plate; and a driven part connected to the housing, and the sensor unit moves along a specified trajectory by the displacement of the driving part.

[0011] Moreover, the present invention is characterized in that one of the driving part and the driven part includes a roller, and the other of the driving part and the driven part includes at least one of an inclined surface and a curved surface.

[0012] Moreover, the present invention is characterized in that the driven part rotates with respect to the displacement axis by means of the driving part.

[0013] Moreover, the present invention is characterized in that the displacement axis is perpendicular to a plane through which the specified trajectory of the sensor unit passes.

[0014] Moreover, the present invention is characterized in that the sensor unit is disposed at a distance from the displacement axis toward the pivot axis.

[0015] Moreover, the present invention is characterized in that the sensor unit is configured to detect at least one of a rotation angle and a linear displacement amount with respect to an axis.

[0016] According to the present invention, the amount of exercise of a bicycle rider can be accurately measured.

[0017] Moreover, the amount of exercise of a bicycle rider can be precisely calculated.

[0018] Moreover, although the displacement generating assembly is subject to spatial constraints, the amount of rotation (displacement amount) of the top plate can be accurately and precisely measured by a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of a bicycle pedal according to an embodiment of the present invention is shown for simplicity.

[0020] Figure 2 To show Figure 1 A view of the interior of the bicycle pedal shown is provided.

[0021] Figure 3 For Figure 1 A side view of the bicycle pedal shown is provided.

[0022] Figure 4 To show Figure 1 A top view of the interior of the bicycle pedal shown

[0023] Figure 5 To briefly show Figure 2 A perspective view of the displacement generating assembly shown

[0024] Figure 6 To be Figure 5 A side view of the displacement generating assembly shown

[0025] Figure 7 For explaining Figure 6 The operation of the driving part and the driven part shown Detailed implementation mode

[0026] Hereinafter, a bicycle pedal 1 according to a preferred embodiment of the present invention will be described in detail

[0027] Figure 1 A perspective view briefly showing the bicycle pedal 1 according to an embodiment of the present invention Figure 2 To show Figure 1 A view of the interior of the bicycle pedal 1 shown Figure 3 To be Figure 1 A side view of the bicycle pedal 1 shown Figure 4 To show Figure 1 A top view of the interior of the bicycle pedal 1 shown

[0028] Referring to Figures 1 to 4 , the bicycle pedal 1 according to an embodiment of the present invention includes: a housing 10, a top plate 20, a displacement generating assembly 30 and a sensor unit 40 to accurately and precisely calculate the exercise amount of a bicycle rider

[0029] The housing 10 can rotate based on the main shaft 11. The main shaft 11 can be connected to a drive arm of a bicycle (not shown). The drive arm is connected to a drive shaft (not shown) that rotates the wheels through a chain or the like (not shown). Therefore, the bicycle pedal 1 can rotate the wheels (not shown) through the drive arm

[0030] The top plate 20 is connected to the housing 10 through a pivot 21. Therefore, the top plate 20 can rotate based on the pivot 21. The displacement generating assembly 30 is disposed inside the housing 10. The displacement generating assembly 30 generates displacement according to the rotation of the top plate 20 by being connected to the housing 10 and the top plate 20. The sensor unit 40 detects the displacement by being connected to the displacement generating assembly 30

[0031] A cyclist can exercise by pedaling the pedal 1. In this case, the amount of exercise can vary according to the pressure applied by the cyclist to the pedal 1. In particular, an indoor exercise bike can apply (apply) a load to the rotation of the wheel according to the exercise stage. Among them, even if the rotational speed (rpm) of the wheel is the same, the pressure applied to the bicycle pedal 1 will increase when the load is large. Therefore, even if the rotational speed (rpm) of the wheel is the same, the amount of exercise will vary according to the pressure applied by the cyclist to the bicycle pedal 1. In the present invention, the change in the pressure applied by the cyclist to the bicycle pedal 1 can be measured to accurately calculate the amount of exercise.

[0032] The sensor unit 40 moves along a specified trajectory T between the housing 10 and the top plate 20 through the displacement generating assembly 30. Among them, the trajectory T of the sensor unit 40 is arranged on a plane P. A plane P is arranged between the top plate 20 and the housing 10. Specifically, a plane P is arranged parallel to the pivot 21 and the main shaft 11. That is, the trajectory T of the sensor unit 40 is parallel to the pivot 21 and the main shaft 11. Among them, the pivot 21 is parallel to the main shaft 11.

[0033] Figure 5 For a brief illustration Figure 2 The perspective view of the displacement generating assembly 30 shown, Figure 6 is Figure 5 The side view of the displacement generating assembly 30 shown, Figure 7 is a diagram for explaining Figure 6 The operations of the driving part 300 and the driven part 310 shown.

[0034] Referring to Figures 1 to 7 , the displacement generating assembly 30 includes a driving part 300 and a driven part 310. The driving part 300 is connected to the top plate 20. The driven part 310 is connected to the housing 10. The driven part 310 is displaced by the driving part 300 and moves the sensor unit 40 along a specified trajectory T.

[0035] As an embodiment, one of the driving part 300 and the driven part 310 includes a roller 301. The other of the driving part 300 and the driven part 310 includes a contact part 302. The contact part 302 has at least one of an inclined surface S and a curved surface facing the driving part 300. The contact part 302 can be inclined more downward toward the driving part 300 as it gets closer to the driving part 300. Thus, when the driving part 300 rotates downward with respect to the pivot 21 as a reference, the contact part 302 will be gradually pushed. In this case, the driven part 310 can rotate (rotate) with respect to the displacement axis X1 as a reference. Through the roller 301 and the contact part 302, the driven part 310 can smoothly change one movement direction of the driving part 300 to another movement direction.

[0036] The follower part 310 includes a follower body 311 and a printed circuit board 312 (PCB). The follower body 311 has a contact part 302 disposed on one side thereof. The follower body 311 can be rotated with respect to the displacement axis X1 by the driving part 300. The displacement axis X1 can be vertically disposed in a plane P through which a specified locus T of the sensor part 40 passes. Thus, the movement of the driving part 300 can be changed by the rotation of the follower part 310 with respect to the displacement axis X1. That is, even under the limitation of a narrow space, the rotation amount of the top plate 20 can be accurately detected.

[0037] The bicycle pedal 1 rotates with respect to the main shaft 11 and the above-described drive shaft (not shown). That is, the sensor part 40 should accurately measure the change in the pressure applied to the top plate 20, regardless of the rotation of the housing 10. The displacement generating assembly 30 of the present invention moves the sensor part 40 on a plane P disposed between the top plate 20 and the housing 10. Since the plane P itself rotates together with the housing 10, when the sensor part 40 moves on the plane P, the change in the pressure applied only to the top plate 20 can be accurately detected. That is, the sensor part 40 can accurately measure the change in the pressure generated according to the rotation of the top plate 20, regardless of the rotation with respect to the main shaft 11 or the above-described drive shaft (not shown).

[0038] On the other hand, the sensor part 40 is disposed at a distance from the displacement axis X1 toward the pivot 21. That is, the sensor part 40 is disposed between the displacement axis X1 and the pivot 21. Thus, the sensor part 40 can be disposed at a position far from the displacement axis X1. In this case, the sensor part 40 can have a large displacement with respect to the displacement axis X1. That is, even if the contact part 302 generates a relatively small displacement by the driving part 300, the sensor part 40 can generate a relatively large displacement. Therefore, a sufficient detection range of the sensor part 40 can be ensured.

[0039] The sensor part 40 can detect at least one of the rotation angle A and the linear displacement amount D. The rotation angle A is the rotation angle of the sensor part 40 with respect to the displacement axis X1. The linear displacement amount D refers to the moving distance in which a straight line X2 passing through the center of the sensor part 40 and perpendicular to the pivot 21 moves along the direction of the pivot 21. As an embodiment, the sensor part 40 can be at least one selected from an acceleration sensor, a gyro sensor, and a 6-axis sensor. Preferably, the sensor part 40 can be a 6-axis sensor. The sensor part 40 can be disposed on the printed circuit board 312 (PCB).

[0040] On the other hand, the first return spring 320 returns the driven part 310 displaced by the active part 300 to its original position. The first return spring 320 may be connected to the housing 10 and the driven part 310. Further, the second return spring 50 returns the top plate 20 rotated by the cyclist to its original position. A plurality of second return springs 50 may be provided. A part of the plurality of second return springs 50 may be arranged facing the remaining part of the plurality of second return springs 50 with the displacement generating assembly 30 therebetween.

[0041] As described above, although the invention achieved by the present inventor has been specifically described based on the above embodiments, the present invention is not limited to the above embodiments and various modifications can be made without departing from the gist thereof.

Claims

1. A pedal for a bicycle, characterized in that, Comprising: A housing that can rotate with respect to a main shaft; A top plate that is connected to the housing by a pivot and can rotate with respect to the pivot; A displacement generating assembly disposed inside the housing, which generates displacement according to the rotation of the top plate by being connected to the housing and the top plate; and A sensor unit that detects displacement by being connected to the displacement generating assembly, wherein the sensor unit moves along a specified trajectory between the housing and the top plate through the displacement generating assembly.

2. The pedal for a bicycle according to claim 1, characterized in that, The trajectory of the sensor unit is parallel to the pivot.

3. The pedal for a bicycle according to claim 1, characterized in that, The pivot is parallel to the main shaft.

4. The pedal for a bicycle according to claim 1, characterized in that, The displacement generating assembly includes: A driving part connected to the top plate; and A driven part connected to the housing, and the driven part is displaced by the driving part and causes the sensor unit to move along a specified trajectory.

5. The pedal for a bicycle according to claim 4, characterized in that, One of the driving part and the driven part includes a roller, and the other of the driving part and the driven part includes a contact part having at least one of an inclined surface and a curved surface.

6. The pedal for a bicycle according to claim 4, characterized in that, The driven part rotates with respect to a displacement axis through the driving part.

7. The pedal for a bicycle according to claim 6, characterized in that, The displacement axis is perpendicular to a plane through which the specified trajectory of the sensor unit passes.

8. The pedal for a bicycle according to claim 6, characterized in that, The sensor unit is spaced apart from the displacement axis toward the pivot.

9. The pedal for a bicycle according to claim 1, characterized in that, The sensor unit is configured to detect at least one of a rotation angle and a linear displacement amount with respect to an axis.

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