Exercise bicycle with bent crank

Abstract

The exercise bicycle at least comprises a base structure, a support structure, a load structure, a hand-cranking structure and a treading structure, the support structure is provided with a supporting frame arranged on the base structure, and the treading structure is provided with a crankshaft penetrating through and pivoted to the supporting frame. A left bent crank and a right bent crank which are coaxial and extend in different directions are respectively arranged at two ends of the crankshaft, the left bent crank and the right bent crank are respectively provided with a straight rod section connected with the crankshaft, the straight rod sections of the left bent crank and the right bent crank are respectively connected with bent rod sections which deflect towards the same side, and deflection included angles are formed between the straight rod sections and the bent rod sections. A left pedal plate and a right pedal plate are respectively pivoted at the end parts of the bent rod sections of the left bent crank and the right bent crank, so that the left bent crank and the right bent crank can generate a vertical component force and a horizontal component force along the inclined conduction force of the bent rod sections when the left bent crank and the right bent crank rotate at a vertical point or a horizontal point; therefore, the exercise bicycle with the bent crank, which is capable of avoiding motion dead angles, is formed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of fitness equipment technical field, specifically refers to a kind of fitness bicycle with curved crank, to avoid in the circumferential pedaling movement, because in the vertical position corner produces the feeling of frustration, or because in horizontal position no vertical component force and produces the feeling of sudden drop, can effectively improve the smoothness of pedaling action, so that the movement of fitness bicycle is more stable and safe. BACKGROUND

[0002] In recent years, people in busy life, almost cannot empty the time that can go to outdoor exercise, so most can only use trivial time to do some simple body stretching action, or do some indoor exercise to stretch muscle and bone under the assistance of relevant fitness equipment, such as elliptical track motion device, treadmill, fitness bicycle etc., each has different function and exercise effect, for example, as shown in Figure 1 、 Figure 2 , vehicle body is mainly provided with support frame (11) for bearing user on base (10), support frame (11) is provided with load structure (15), load structure (15) has crankshaft (16) laterally pivoted on support frame (11), and crankshaft (16) is respectively provided with crank (17) in different direction on two ends of two sides of support frame (11), and the end of two sides of crank (17) is respectively provided with foot pedal (18), for user to cross pedaling foot pedal (18) with two feet, to drive load wheel (19) by crankshaft (16), and achieve the purpose of providing exercise load, for the circumferential movement of foot of lower half body, especially mainly for training quadriceps, hamstrings and calf. Another part of fitness bicycle is further provided with handrail connecting rod (14) on the end of crank (17), for being connected with rocker handrail [not shown in the figure] provided at the front end of vehicle body, when user pedals, both hands hold rocker handrail and synchronous cross operation, can be used for strengthening the training of arm, shoulder, core and back, and become whole body exercise.

[0003] However, in existing fitness bicycle, crank (17) for driving is straight rod type structure, which has some problems in actual application: first, when crank (17) rotates to vertical position of vertical ground, crank (17) will produce a downward vertical component force P1, at this time, because there is no horizontal component force, a kind of "dead angle state" is formed, so the feeling of pedaling point is produced. Secondly, when crank (17) rotates to horizontal position of parallel ground, then crank (17) will produce a horizontal component force P2 of parallel ground, and because there is no vertical component force at this time, a kind of "sudden drop state" is formed, and the feeling of sudden drop of emptying is felt by user.

[0004] In other words, due to the existing exercise bike in motion, will be affected by the vertical force P1 of the crank (17) in the rotation of the vertical point and the horizontal force P2 of the horizontal point, causing the phenomenon of "dead angle state" or "sudden drop state" in the circular motion, and the movement is not smooth and unstable, so how to solve this problem is a very important issue in the industry.

[0005] Due to the above-mentioned shortcomings and needs, the applicant has researched the above-mentioned disadvantages and needs, and finally developed an exercise bike with a curved crank, so as to overcome the inconvenience and trouble caused by the straight rod crank of the existing exercise bike. Practical new type content

[0006] Therefore, the main purpose of the present application is to provide an exercise bike with a curved crank, so that it can have horizontal and vertical forces when doing circular motion at vertical or horizontal positions, which can effectively avoid the feeling of frustration at vertical position due to the lack of horizontal force, or the feeling of sudden drop at horizontal position due to the lack of vertical force.

[0007] Another main purpose of the present application is to provide an exercise bike with a curved crank, which can improve the smoothness of the circular pedaling action of the exercise bike, and make the movement more stable, thereby greatly improving the safety of the movement.

[0008] Therefore, the present application mainly realizes the above-mentioned purposes and effects through the following technical means, at least including a base structure, a support structure, a load structure, a hand crank structure and a pedaling structure, the support structure has a support frame arranged on the base structure, and the load structure is arranged on the support structure to connect the pedaling structure to provide movement load, wherein the pedaling structure is arranged between the two sides of the support structure, and the pedaling structure has a crankshaft pivoted in the support frame, which can drive the load structure to generate movement load when the crankshaft is operated;

[0009] The left and right curved cranks are arranged at the two ends of the crankshaft with the same axis and in different directions, and the left and right curved cranks have straight rod segments connected with the crankshaft, and the straight rod segments of the left and right curved cranks are connected with curved rod segments inclined to the same side, and the straight rod segments and the curved rod segments have an inclination angle, and the left and right curved cranks are locked at the two ends of the crankshaft with the end portions of the straight rod segments, and the left and right curved cranks are pivoted with the left and right foot pedals at the end portions of the curved rod segments;

[0010] This ensures that, during rotational motion, both the left-hand and right-hand cranks can transmit force along the oblique direction of the curved section to generate vertical and horizontal components, regardless of whether the point is vertical or horizontal. This results in a type of exercise bike with curved cranks that avoids dead angles in motion.

[0011] Through the specific implementation of the above-mentioned technical means, the exercise bike with curved cranks of this utility model utilizes the design of straight rod sections and opposing curved rod sections in the left and right curved cranks of the pedaling structure. This allows the left and right curved cranks to have an oblique angle, ensuring that during rotation, whether in a vertical or horizontal position, the left and right curved cranks can transmit force along the oblique direction of the curved rod sections to generate vertical and horizontal components of force. This avoids the jerking sensation caused by dead angles or the sudden drop caused by the lack of vertical force during exercise, further improving the smoothness of pedaling and making the exercise more stable, significantly improving the safety of exercise, and further increasing its added value and economic benefits.

[0012] This utility model further achieves the above-mentioned objectives and effects by utilizing the following technical means; it includes:

[0013] Preferably, the support frame of the bracket structure is provided with a hand crank structure on both sides. The hand crank structure has a left hand crank and a right hand crank pivotally mounted in the middle on both sides of the front end of the support frame. The bottom ends of the left hand crank and the right hand crank are pivotally connected to the ends of the curved sections of the left and right curved cranks opposite to the pedal structure by means of the left connecting rod and the right connecting rod, respectively.

[0014] Preferably, the base structure has a main frame and cross legs at both ends of the main frame for stable placement on the ground, while the support structure is mounted on the main frame.

[0015] Preferably, the support frame includes a vertical tube erected at the rear end of the main frame rod and two fork tubes erected on both sides of the front end of the main frame rod. The load structure mainly pivots the blade assembly between the fork tubes, and the blade assembly has a driven wheel on one side of the shaft. The crankshaft is provided with a corresponding drive wheel, so that the driven wheel and the drive wheel can be connected by a transmission component, so that the blade assembly can be driven to generate load synchronously when the crankshaft is operated.

[0016] Preferably, the support frame of the bracket structure has a seat tube for selective insertion of the seat cushion assembly.

[0017] Preferably, the support frame is equipped with an instrument group at the front end, allowing users to monitor relative motion data.

[0018] Preferably, the load structure has a damper on the support frame corresponding to the impeller assembly, which is used to change the motion effect by adjusting the load force of the impeller assembly.

[0019] Preferably, the hand crank structure has left and right pivot rods extending outwardly on both sides of the support frame, for the middle sections of the left and right handrails to be pivotally arranged.

[0020] Preferably, the pedal structure has a cover on both sides of the support frame, which can be closed relative to the transmission member and has a shell cover for the crankshaft to pass through, so as to achieve a protective effect.

[0021] Preferably, the deflection direction of the bent rod section of the left and right bent cranks relative to the straight rod section can be the same as the movement direction.

[0022] Preferably, the deflection direction of the bent rod section of the left and right bent cranks relative to the straight rod section can be opposite to the movement direction.

[0023] Preferably, the deflection angle is greater than 90 degrees and less than 180 degrees. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is an action schematic diagram of the crank of the commonly used exercise bicycle when the crank is in a vertical position.

[0025] Figure 2 It is an action schematic diagram of the crank of the commonly used exercise bicycle when the crank is in a horizontal position.

[0026] Figure 3 It is a three-dimensional appearance schematic diagram of the exercise bicycle of the utility model.

[0027] Figure 4 It is a three-dimensional exploded schematic diagram of the exercise bicycle of the utility model, which is used to illustrate the constituent elements and their relative relationship.

[0028] Figure 5 It is a pedal operation schematic diagram of the exercise bicycle of the utility model, which is used to illustrate the state of the movement track.

[0029] Figure 6 It is a movement state schematic diagram of the exercise bicycle of the utility model when it is in a vertical state.

[0030] Figure 7 It is a movement state schematic diagram of the exercise bicycle of the utility model when it is in a horizontal state.

[0031] REFERENCE NUMERALS:

[0032] 10: base

[0033] 11: support frame

[0034] 14: handrail connecting rod

[0035] 15: load structure

[0036] 16: crankshaft

[0037] 17: crank

[0038] 18: foot pedal

[0039] 19: load wheel

[0040] 20: base structure

[0041] 21: main frame bar

[0042] 22: cross foot bar

[0043] 30: bracket structure

[0044] 31: support bracket

[0045] 32: riser tube

[0046] 33: fork tube

[0047] 34: seat tube

[0048] 35: seat post assembly

[0049] 36: instrument cluster

[0050] 40: load structure

[0051] 41: vane assembly

[0052] 42: idler wheel

[0053] 45: damper

[0054] 50: hand crank structure

[0055] 51: left pivot bar

[0056] 52: right pivot bar

[0057] 56: left arm crank

[0058] 57: right arm crank

[0059] 58: left connecting rod

[0060] 59: right connecting rod

[0061] 60: treadle structure

[0062] 61: crank shaft

[0063] 62: drive wheel

[0064] 63: drive member

[0065] 64: housing cover

[0066] 66: left bent crank

[0067] 661: straight bar segment

[0068] 662: bent bar segment

[0069] 67: right crank

[0070] 671: straight rod segment

[0071] 672: bent rod segment

[0072] 68: left pedal

[0073] 69: right pedal DETAILED DESCRIPTION

[0074] In the specific embodiments of the utility model and its components shown in the accompanying drawings, all references to front and back, left and right, top and bottom, upper and lower, and horizontal and vertical are only for the convenience of description and are not intended to limit the utility model or its components to any position or spatial orientation. The dimensions specified in the drawings and the specification can be changed according to the design and requirements of the specific embodiments of the utility model without departing from the scope of the patent application, and therefore the patent application is not limited by such structures.

[0075] The utility model is a fitness bike, please refer to Figure 3 、 Figure 4 shown, mainly by base structure 20, support structure 30, load structure 40 and tread structure 60 is composed of;

[0076] Among them, the base structure 20 has a main frame rod 21 and a cross rod 22 arranged at both ends of the main frame rod 21, which is stably arranged on the ground, and the support structure 30 has a support frame 31, which includes a vertical pipe 32 vertically arranged at the rear end of the main frame rod 21 and two fork pipes 33 vertically arranged at both sides of the front end of the main frame rod 21, and the support structure 30 further has a seat pipe 34 arranged in front of the vertical pipe 32, in which a seat pad group 35 is selectively inserted, and the front end of the support frame 31 has an upwardly extending instrument group 36 for the user to monitor the relative motion data;

[0077] The load structure 40 is arranged on the support structure 30 to connect the tread structure 60 to provide exercise load, and the load structure 40 mainly has a vane group 41 pivotally arranged between the two fork pipes 33 at the front end of the support frame 31, and the vane group 41 has a passive wheel 42 with synchronous rotation on one side of the shaft, which drives the vane group 41 to rotate synchronously, and the load structure 40 has a damper 45 corresponding to the vane group 41 on the support frame 31, which adjusts the load of the vane group 41 through the damper 45 to adjust the exercise intensity of the fitness bike;

[0078] The tread structure 60 is arranged on the support structure 30, and has a crank shaft 61 pivoted on the support frame 31, and a transmission wheel 62 fixed on the crank shaft 61 corresponding to the driven wheel 42, so that the driven wheel 42 and the transmission wheel 62 are connected by a transmission member 63 (such as a chain), when the crank shaft 61 is operated, the impeller set 41 can be synchronously driven to generate load, and the tread structure 60 is provided with a cover 64 on both sides of the support frame 31, the cover 64 can cover the transmission member 63, and the both ends of the crank shaft 61 pass through the cover 64, so as to generate a protection effect, the both ends of the crank shaft 61 are respectively provided with a left bending crank 66 and a right bending crank 67 which are coaxial and extend in different directions, the left bending crank 66 and the right bending crank 67 are respectively provided with a straight rod segment 661, 671 connected with the crank shaft 61, the straight rod segment 661 of the left bending crank 66 and the straight rod segment 671 of the right bending crank 67 are respectively connected with a bent rod segment 662, 672 which is inclined to the same side, the inclination direction of the bent rod segment 662, 672 relative to the straight rod segment 661, 671 can be the same direction or the opposite direction of the movement direction of the left bending crank 66 and the right bending crank 67, so that the extension axis of the straight rod segment 661, 671 of the left bending crank 66 and the right bending crank 67 and the extension axis of the bent rod segment 662, 672 have an inclination angle, the inclination angle is greater than 90 degrees and less than 180 degrees, so as to ensure that the left bending crank 66 and the right bending crank 67 can generate vertical component force and horizontal component force when rotating at the vertical point or the horizontal point, and the left bending crank 66 and the right bending crank 67 are respectively locked at the both ends of the crank shaft 61 by the end of the straight rod segment 661, 671, and the left bending crank 66 and the right bending crank 67 are further respectively provided with a left pedal 68 and a right pedal 69 by the end of the bent rod segment 662, 672, so that the user can step on the left pedal 68 and the right pedal 69 by both feet, so that the left bending crank 66 and the right bending crank 67 generate circumferential rotation movement.

[0079] According to some embodiments, the utility model further has a hand shaking structure 50, the hand shaking structure 50 is respectively provided with a left pivot rod 51 and a right pivot rod 52 which extend outward and transversely on both sides of the front end of the support frame 31 of the support structure 30, and the hand shaking structure 50 is respectively provided with a left hand shaking rod 56 which is pivotally arranged on the left pivot rod 51 and a right hand shaking rod 57 which is pivotally arranged on the right pivot rod 52, the bottom end of the left hand shaking rod 56 and the right hand shaking rod 57 is respectively pivotally arranged with the end of a left connecting rod 58 and a right connecting rod 59, and the other end of the left connecting rod 58 and the right connecting rod 59 is respectively pivotally arranged on the end of the bent rod segment 662 of the left bending crank 66 and the bent rod segment 672 of the right bending crank 67, so that the user can generate whole body movement by alternately swinging the left hand shaking rod 56 and the right hand shaking rod 57 when stepping on the circumferential movement.

[0080] Therefore, the utility model can avoid the dead angle of movement and has the bending crank of the exercise bicycle.

[0081] The utility model discloses a body -building bicycle in actual use, like Figure 3 、 Figure 5 Indicated, operation, the user can sit on the seat pad group 35 of support structure 30, and below the left and right feet of the lower body respectively straddle on the left foot pedal 68, right foot pedal 69 of the left bending crank 66, right bending crank 67 of opposite pedaling structure 60, and simultaneously above the left and right hands of the upper body hold the upper section of left handrail rocker 56, right handrail rocker 57 of hand rocker structure 50 respectively, when the user operates left bending crank 66, right bending crank 67 through treading left foot pedal 68, right foot pedal 69, can drive the rotation of crankshaft 61, and rotation is generated movement load through transmission 63 and drives wheel blade group 41, for the user can reach knee rotation, to drive leg, hip curve mass movement, for the training of quadriceps femoris, hamstrings and calf, and the synchronous driving left handrail rocker 56, right handrail rocker 57 of left connecting rod 58, right connecting rod 59 is used to make the cross swing of both hands, to the feature of arc line reciprocating swing operation, can be used for strengthening the training of arm, shoulder, core and back, and then reach the efficacy of whole body movement;

[0082] As shown in Figure 6 、 Figure 7 Indicated, the top end of support frame 31 is pivotally provided with crankshaft 61, and the left bending crank 66, right bending crank 67 of reverse extension are respectively arranged on both sides of crankshaft 61, when the left bending crank 66, right bending crank 67 of reverse extension are respectively arranged on both sides of crankshaft 61, when the left bending crank 66, right bending crank 67 are driven by the left bending crank 66, right bending crank 67 through treading left foot pedal 68, right foot pedal 69, when left bending crank 66, right bending crank 67 rotate to the vertical position T perpendicular to the ground, a downward vertical component and a horizontal component are generated along the oblique conduction force of bent bar section 662, 672, and "dead angle state" is not caused, and then the feeling of treading point can be avoided (as shown in Figure 6 Indicated);In addition, when the left bending crank 66, right bending crank 67 rotate to the horizontal position S parallel to the ground, a horizontal horizontal component and a vertical component are generated along the oblique conduction force of bent bar section 662, 672, and "sudden drop state" is not caused, and then the feeling of sudden drop of treading empty can be avoided (as shown in Figure 7 Indicated)。

[0083] According to the above constitution and use instruction, the fitness bicycle has the design of the left bending crank 66 and the right bending crank 67 with the straight rod section 661, 671 and the opposite bending rod section 662, 672, so that the left bending crank 66 and the right bending crank 67 have the skewing included angle, and the vertical component force and the horizontal component force can be generated along the oblique conduction force of the bending rod section 662, 672 when the left bending crank 66 and the right bending crank 67 rotate in the vertical position T or the horizontal position S, so that the sudden feeling caused by the dead angle in the exercise can be avoided, or the sudden falling feeling caused by no vertical component force can be avoided, the smoothness of the pedaling action can be further improved, the exercise is more stable, and the safety of the exercise is greatly improved.

Claims

1. A fitness bike with curved cranks, comprising at least a base structure, a support structure, a load structure and a pedaling structure, the support structure having a support frame arranged on the base structure, the load structure arranged on the support structure to connect the pedaling structure to provide a load, the pedaling structure arranged between two sides of the support structure, the pedaling structure having a crankshaft pivoted on the support frame, to drive the load structure to generate a load when the crankshaft is operated, characterized in that, two ends of the crankshaft are respectively provided with left and right curved cranks extending in the same axis and in different directions, the left and right curved cranks respectively have a straight rod segment connected to the crankshaft, the straight rod segment of the left and right curved cranks is respectively connected to a curved rod segment inclined to the same side, the straight rod segment and the curved rod segment have an inclination angle, the left and right curved cranks are respectively locked at the two ends of the crankshaft by the end of the straight rod segment, and the left and right curved cranks are respectively provided with left and right foot pedals by the end of the curved rod segment. Thus, the left and right curved cranks can generate vertical and horizontal components by the oblique transmission force of the curved rod segment, regardless of the vertical point or the horizontal point in the rotation movement, to form a fitness bike with curved cranks that can avoid dead angle. The inclination direction of the curved rod segment of the left and right curved cranks is the same as the movement direction relative to the straight rod segment.

2. The exercise bicycle having a bent crank as set forth in claim 1, wherein The inclination direction of the curved rod segment of the left and right curved cranks is opposite to the movement direction relative to the straight rod segment.

3. The exercise bicycle having a bent crank as set forth in claim 1, wherein The inclination angle is greater than 90 degrees and less than 180 degrees.

4. The exercise bicycle having a bent crank as set forth in claim 1, wherein The base structure has a main frame rod and transverse foot rods arranged at both ends of the main frame rod, and the support frame of the support structure is arranged on the main frame rod.

5. The exercise bicycle having a bent crank as set forth in claim 1, wherein The support frame of the support structure has a seat tube for selectively inserting a seat cushion group.

6. The exercise bicycle having a bent crank as set forth in claim 1, wherein The support frame comprises a vertical tube vertically arranged at the rear end of the main frame rod and two fork tubes vertically arranged at both sides of the front end of the main frame rod, the load structure mainly has a vane group pivoted between the fork tubes, one side of the vane group has a driven wheel, the crankshaft is provided with a transmission wheel corresponding to the driven wheel, and a transmission member is used to connect the driven wheel and the transmission wheel, to drive the vane group to generate a load when the crankshaft is operated.

7. The exercise bicycle having a bent crank as set forth in claim 5, wherein The pedaling structure is provided with a shell cover on both sides of the support frame, which can cover the transmission member and allow the two ends of the crankshaft to pass through.

8. The exercise bicycle having a bent crank as set forth in claim 7, wherein The load structure is provided with a damper corresponding to the vane group on the support frame, to change the exercise effect by adjusting the load of the vane group.

9. The exercise bicycle having a bent crank as set forth in claim 7, wherein The support frame of the support structure is provided with a hand shaking structure on both sides, the hand shaking structure has left and right hand shaking rods pivoted at the middle segment on both sides of the front end of the support frame, the bottom end of the left and right hand shaking rods is respectively pivoted and connected to the end of the curved rod segment of the left and right curved cranks opposite to the pedaling structure by left and right connecting rods.

10. An exercise bicycle having a bent crank as claimed in any one of claims 1 to 9 wherein, ​

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