Bicycle frame with adjustable saddle position

Abstract

We provide bicycle frames with adjustable saddle positions. [Solution] The device consists of a top frame (10) having a fixed length; a seat frame (20) movable in the longitudinal direction of the top frame (10); a position adjustment unit (30) for adjusting the fixed position of the seat frame (20); a down frame (40) that is linked to the movement of the seat frame (20); a speed increasing device (50) that increases the rotation speed of the rear wheel when the pedals are rotated; and a fork frame (60) to which a steering handlebar (2) is connected at the top so as to be height adjustable, and to which a front wheel is provided at the bottom. The position adjustment unit (30) allows the seat frame (20) to move longitudinally along the top frame (10), so that the saddle (1) provided on the seat frame (20) moves back and forth on the top frame (10), making it possible to adjust the position of the saddle.

Description

Technical Field

[0001] The present invention relates to a bicycle frame capable of adjusting the position of a saddle, and more specifically, to a bicycle frame capable of adjusting the position of a saddle that allows the position of the saddle to be arbitrarily and automatically adjusted. The present invention also relates to a bicycle in which bicycle tires are coupled to a bicycle frame capable of adjusting the position of a saddle. Background Art

[0002] Generally, a bicycle frame is substantially diamond-shaped, and includes: a head tube to which a handlebar is coupled at an upper portion, and a fork fixing a front wheel is coupled at a lower portion; a seat tube to which a seat (saddle) is coupled at an upper portion, and a pedal crank shaft is coupled at a lower portion; a top tube connecting the head tube and the upper portion of the seat tube; a down tube connecting the head tube and the lower portion of the seat tube; a seat stay tube connecting the upper portion of the seat tube and a rear wheel shaft; and a chain stay tube connecting the pedal crank shaft and the rear wheel shaft.

[0003] However, in conventional bicycle frames, since each of these tube members is fixed to each other by welding, the connecting portion is easily damaged when welding is defective, and the durability is low, which poses a risk of safety accidents.

[0004] In addition, folding bicycles have been marketed in various forms to allow the length or volume of the frame to be reduced for convenience during storage and transportation of bicycles. However, there is no bicycle that allows adjusting the distance between the front wheel and the pedal crank shaft in consideration of the age, height, and other factors of the rider.

[0005] As a solution devised to improve such problems, the following Patent Document 1 discloses a bicycle frame structure, which is shown in FIG. 1 and FIG. 2. Prior Art Documents Patent Documents

[0006] [Patent Document 1] Korean Published Patent No. 10-2017-0035037

[0007] The bicycle frame structure comprises a top frame (30) having a certain length and having wave-shaped portions formed on the front and rear of its upper surface, a seat frame (20) positioned on top of the top frame (30) and slidable in the longitudinal direction of the top frame (30), a clamp device (10) connected to the seat frame (20) and having a safety lever (10-2) attached to the lower part of a cam lever (10-1) having a jaw (10-8) that can be fixed to the wave-shaped portion and move up and down reciprocally, and on both sides of the seat frame (20) The structure consists of a down frame (50) which is connected to the thrust movement of the seat frame (20), and a down frame (50) which is connected to the thrust movement of the seat frame (20), and a down frame (40) which is interposed between the down frame (1) and the down frame (2) and increases the rotation speed of the rear wheel when the pedal is rotated, and a fork frame (60) which is connected to the front of the top frame (30) without welding, to which a steering handlebar is connected at the top so as to be height adjustable, and to which a front wheel is attached at the bottom.

[0008] In the bicycle frame structure configured as described above, when the safety lever (10-2) and cam lever (10-1) are operated, the jaw (10-8) is fixed to the wave-shaped part when it moves downward, and when it moves upward, the seat frame (20) becomes slidable, allowing the down frame (50) to slide back and forth on the top frame (30) to extend and retract.

[0009] The above bicycle frame structure allows the down tube (down frame) to move and be fixed in any position on the top tube (top frame), eliminating the need for welding to fix each tube (frame). This improves durability and safety, and allows riders of all ages, genders, heights, and physical conditions to create an optimal bicycle frame that suits their body type, resulting in improved riding stability and minimizing fatigue while enjoying riding.

[0010] However, in the bicycle frame structure configured as described above, the operation of the safety lever (10-2) and cam lever (10-1) moves the jaw (10-8) upward, allowing the seat frame (20) to slide, so that the down frame (50) slides over the top frame (30) to extend or retract. In this state, the operation of the safety lever (10-2) and cam lever (10-1) moves the jaw (10-8) downward, fixing the seat frame (20) in place so that it is fixed to the wave-shaped part. However, the operation of the safety lever (10-2) and cam lever (10-1) to move the jaw (10-8) upward and downward must be operated manually, which presents a significant inconvenience problem.

[0011] Furthermore, there is a problem in that the operation of the safety lever (10-2) and cam lever (10-1) for moving the jaw (10-8) upward and downward must be performed with the bicycle stopped.

[0012] Furthermore, while riding a bicycle for extended periods necessitates changes in riding posture, adjusting the saddle position to create an optimal bicycle frame suited to one's body type requires doing so while the bicycle is stationary, which presents an inconvenient problem. [Overview of the project] [Problems that the invention aims to solve]

[0013] The present invention aims to solve the problems inherent in the conventional bicycle frames described above, and to provide a bicycle frame with an adjustable saddle that not only makes saddle position adjustment easier by automatically adjusting the saddle position, but also allows saddle position adjustment even while the bicycle is in operation. [Means for solving the problem]

[0014] To achieve the above objective, the present invention provides a bicycle frame with adjustable saddle position, comprising: a top frame (10) having a fixed length; a seat frame (20) coupled to the top frame (10) and movable in the longitudinal direction of the top frame (10); a position adjustment part (30) provided on the seat frame (20) that adjusts the fixed position of the seat frame (20) by making it movable in the longitudinal direction along the top frame (10); and one down frame (40-1) and the other down frame (40-2) extending downward from both sides of the seat frame (20), with a rear wheel and pedal axle provided on each side, respectively, and the seat frame The seat frame (20) is movable in conjunction with the movement of the seat frame (20); a speed increaser (50) is interposed between the one side down frame (40-1) and the other side down frame (40-2) to increase the rotation speed of the rear wheel when the pedals are rotated; and a fork frame (60) is welded to the front of the top frame (10), with a steering handlebar (2) attached to the upper part in a height-adjustable manner and a front wheel attached to the lower part. The seat frame (20) is movable longitudinally along the top frame (10) by the position adjustment part (30), so that the saddle (1) attached to the seat frame (20) moves back and forth on the top frame (10) to adjust the position of the saddle.

[0015] Furthermore, the top frame (10) is provided with a lead screw (11) that is formed to be long in the longitudinal direction, and the position adjustment part (30) has a lead screw coupling part (31) which is coupled to the lead screw (11) on its inner circumference and has a first helical gear (31a) formed on its outer circumference, and an external gear (32) which has a second helical gear (32a) that is externally tangent to the first helical gear (31a) of the lead screw coupling part (31), and fixed to the seat frame (20). Preferably, the system includes a rotary motor (33) which is set and coupled to the external gear (32), and rotates the external gear (32), thereby rotating the lead screw coupling portion (31), causing the lead screw coupling portion (31) to move along the longitudinal direction of the lead screw (11) of the top frame (10), and thus causing the seat frame (20) to move in the longitudinal direction of the top frame (10).

[0016] Furthermore, it is preferable that the steering handlebar (2) is further equipped with a control panel (70) for controlling the rotational operation of the rotary motor (33). [Effects of the Invention]

[0017] According to the present invention, regardless of age, gender, height, or physical condition, the saddle position can be automatically adjusted to suit one's body type, resulting in improved riding stability and minimizing fatigue while enjoying the ride.

[0018] Furthermore, the present invention has the advantage of being extremely convenient to use, as the saddle position can be changed with simple operation even while the bicycle is in motion. [Brief explanation of the drawing]

[0019] [Figure 1] This diagram shows a conventional bicycle frame. [Figure 2] This diagram shows a conventional bicycle frame. [Figure 3]It is an assembled perspective view of a bicycle frame with an adjustable saddle position according to the present invention. [Figure 4] It is a side view of a bicycle frame with an adjustable saddle position according to the present invention. [Figure 5] It is a diagram showing the internal structure of the saddle position adjustment part of the bicycle frame with an adjustable saddle position according to the present invention. [Figure 6] It is a perspective view showing the structure of the saddle position adjustment part of the bicycle frame with an adjustable saddle position according to the present invention. [Figure 7] It is a diagram showing the configuration of the server for the bicycle frame with an adjustable saddle position according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

[0020] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings showing preferred embodiments of the present invention, so as to demonstrate the novelty of the product and the inventive step of the technology. However, the accompanying embodiments are merely examples for facilitating understanding of the present invention, and are not intended to limit the present invention. Detailed descriptions will be omitted for technologies that are obvious to those skilled in the art or can be easily derived by persons having ordinary knowledge in the art.

[0021] Figure 3 is an assembled perspective view of a bicycle frame with an adjustable saddle position according to the present invention, Figure 4 is a side view of the bicycle frame with an adjustable saddle position according to the present invention, Figure 5 is a diagram showing the internal structure of the saddle position adjustment part of the bicycle frame with an adjustable saddle position according to the present invention, Figure 6 is a perspective view showing the structure of the saddle position adjustment part of the bicycle frame with an adjustable saddle position according to the present invention, and Figure 7 is a diagram showing the configuration of the server for the bicycle frame with an adjustable saddle position according to the present invention.

[0022] As shown in the figure, the bicycle frame with an adjustable saddle position according to the present invention is formed by combining a top frame (10), a seat frame (20), a position adjustment part (30), a down frame (40), a speed increasing device (50) and a fork frame (60).

[0023] The top frame (10) has a certain length and is usually provided horizontally in the longitudinal direction of the bicycle at the upper part.

[0024] The seat frame (20) is equipped with a saddle (1) at its top and is connected to the top frame (10), allowing it to move in the longitudinal direction of the top frame (10). The surface of the saddle (1) is equipped with heating elements to provide warmth in winter.

[0025] Typically, a seat frame is used to adjust the saddle height to the rider's body size by moving a circular post tube to which the bicycle saddle is attached back and forth, and it is usually secured with a quick-release clamp.

[0026] The position adjustment unit (30) is provided on the seat frame (20) and plays a role in adjusting the fixed position of the seat frame (20) by making the seat frame (20) movable in the longitudinal direction along the top frame (10).

[0027] The down frame (40) consists of one down frame (40-1) and the other down frame (40-2) that extend downward from both sides of the seat frame (20), with a rear wheel and pedal axle provided on each side, and moves in conjunction with the movement of the seat frame (20).

[0028] The speed-increasing device (50) is interposed between the down frame on one side (40-1) and the down frame on the other side (40-2) and plays a role in increasing the rotational speed of the rear wheel when the pedal is rotated. The configuration for increasing the rotational speed of the rear wheel when the pedal is rotated is the same as that disclosed in Korean Published Patent No. 10-2017-0035037, and a detailed explanation thereof is omitted.

[0029] The fork frame (60) is connected to the front of the top frame (10) without welding, and the steering handlebar (2) is connected to the upper part in a height-adjustable manner, with the front wheel mounted at the lower part. The fork frame (60) may be equipped with a tilting rotating part (61) in the middle of the fork frame (60) so that the steering handlebar (2) can move forward or backward. When riding the bicycle, the user can rotate the tilting rotating part (61) to point the steering handlebar (2) forward and ride with their waist bent, or the user can rotate the tilting rotating part (61) to point the steering handlebar (2) backward and ride with their waist straight. Furthermore, the fork frame (60) may be designed so that the thickness of the cylinder increases from the steering handlebar (2) downward, which has the advantage of increasing the weight of the lower part of the fork frame (60) compared to the upper part, thereby increasing the stability when riding the bicycle.

[0030] Since the seat frame (20), down frame (40), speed increaser (50), and fork frame (60) of the present invention described above are similar to or identical to those disclosed in Korean Published Patent No. 10-2017-0035037, a detailed explanation of their structure and operation will be omitted.

[0031] In the bicycle frame of the present invention, which has the above configuration and allows for saddle position adjustment, the position adjustment unit (30) allows the seat frame (20) to move longitudinally along the top frame (10), thereby allowing the saddle (1) provided on the seat frame (20) to move back and forth on the top frame (10) and adjust the position of the saddle.

[0032] The present invention, with the configuration described above, allows riders of all ages, genders, heights, and physical conditions to adjust the saddle position to suit their body type, enabling them to enjoy riding while minimizing fatigue and improving riding stability.

[0033] Conventionally, the saddle position was adjusted by manually operating a lever, but it is preferable that the position adjustment unit (30) of the present invention, which adjusts the saddle position, be able to do so automatically.

[0034] For this purpose, the top frame (10) is provided with a lead screw (11) that is formed to be long in the longitudinal direction, and the position adjustment section (30) is provided with a lead screw coupling section (31), an external gear (32), and a rotary motor (33), as shown in Figures 5 and 6.

[0035] The top frame (10) is provided with a lead screw (11) that is formed to be long in the longitudinal direction.

[0036] A lead screw coupling portion (31) is connected to the lead screw (11), and when the lead screw coupling portion (31) rotates, the lead screw coupling portion (31) moves back and forth along the longitudinal direction of the lead screw (11).

[0037] The lead screw coupling portion (31) is coupled to the lead screw (11) at its inner circumference, and a first helical gear (31a) is formed on its outer circumference.

[0038] The external gear (32) is externally attached to the first helical gear (31a) of the lead screw coupling portion (31), forming a second helical gear (32a) that meshes with the first helical gear (31a).

[0039] The rotary motor (33) is fixed to the seat frame (20) and moves back and forth in conjunction with the seat frame (20).

[0040] The rotary motor (33) is provided with a motor shaft (33a) coupled to the external gear (32). Preferably, the rotary motor is capable of forward and reverse rotation of the motor shaft (33a).

[0041] The rotary motor (33) rotates the external gear (32) to rotate the lead screw coupling portion (31), causing the lead screw coupling portion (31) to move along the longitudinal direction of the lead screw (11) of the top frame (10), thereby causing the seat frame (20) to move in the longitudinal direction of the top frame (10).

[0042] In other words, the rotary motor (33) is fixed to the seat frame (20), and when the motor shaft (33a) rotates due to the rotation of the rotary motor (33), the external gear (32) coupled to the motor shaft (33a) rotates, the lead screw coupling part (31) which meshes with the external gear (32) rotates, and the lead screw coupling part (31) moves back and forth along the lead screw (11). Here, the rotary motor (33), the motor shaft (33a), the external gear (32), and the lead screw coupling part (31) are fixed as a single unit, and when the lead screw coupling part (31) moves back and forth, the rotary motor (33) also moves back and forth. Therefore, since the rotary motor (33) is fixed to the seat frame (20) and the lead screw (11) is provided on the top frame (10), when the rotation of the rotary motor (33) causes the lead screw coupling portion (31) to move back and forth along the lead screw (11), the seat frame (20) moves back and forth along the top frame (10). Here, since the saddle (1) is fixed to the seat frame (20), ultimately, the rotation of the rotary motor (33) causes the seat frame (20) to which the saddle (1) is fixed to move back and forth along the top frame (10).

[0043] Furthermore, the bicycle frame, which allows for saddle position adjustment, includes a battery that is charged by the rotation of the bicycle tires when assembled into a bicycle, and the electricity stored in the battery drives the rotary motor (33).

[0044] Thus, the present invention has the effect of automatically changing the saddle position to the optimal position for one's body type, regardless of age, gender, height, or physical condition, allowing riders to enjoy riding while minimizing fatigue and improving riding stability.

[0045] Furthermore, it is preferable that the present invention further comprises a housing cover (35) that houses the lead screw (11), the lead screw coupling portion (31), and the external gear (32).

[0046] Preferably, the storage cover (35) is extendable and retractable to allow movement of the seat frame (20).

[0047] Furthermore, it is preferable that the steering handlebar (2) of the present invention is further equipped with a control panel (70) for controlling the rotational operation of the rotary motor (33).

[0048] As a result, the present invention allows the saddle position to be changed with simple operation of the control panel (70), and because the operation is very convenient and easy, it has the advantage of being operable while the bicycle is in motion without having to stop the bicycle.

[0049] The present invention preferably further includes a server (80) that, depending on the user's physical condition, sets the optimal saddle position and controls the rotation speed of the motor to move the seat frame (20) back and forth when the user's physical condition is input.

[0050] As shown in Figure 7, the server (80) is equipped with an input unit (81), a saddle position calculation unit (82), a motor rotation speed conversion unit (83), and a rotary motor operating unit (84).

[0051] The input unit (81) receives input for saddle position conditions according to the user's physical condition or user preference.

[0052] The saddle position calculation unit (82) calculates the saddle position according to the saddle position conditions input by the input unit (81).

[0053] The motor rotation speed conversion unit (83) converts the rotation speed of the rotary motor according to the position of the saddle calculated by the saddle position calculation unit (82).

[0054] The rotary motor operating unit (84) operates the rotary motor in accordance with the rotation speed of the rotary motor calculated by the motor rotation speed conversion unit (83).

[0055] Furthermore, it is preferable that the server (80) is further equipped with a similarity classification unit (85). The similarity classification unit (85) plays the role of classifying the saddle position conditions according to the user's physical conditions or user preferences, which are input by the input unit (81), into similarity types.

[0056] Furthermore, it is preferable that the server (80) is further provided with a data storage unit (86).

[0057] The data storage unit (86) is responsible for storing the data classified by the similarity classification unit (85).

[0058] The present invention, configured as described above, has the advantage of quickly moving the seat frame (20) forward and backward according to the same type by classifying and saving the saddle position conditions according to the input user's physical conditions or user preferences into similar types.

[0059] Furthermore, the present invention preferably includes a weight-sensing sensor in the saddle to sense the weight of the cyclist, and the seat frame (20) can be moved forward or backward in consideration of the physical conditions based on the weight sensed by the weight-sensing sensor. For example, if height and weight are input as the physical conditions of the user, if the user is heavier for the same height, the lead screw coupling portion (31) can be positioned to further increase the distance from the steering handlebar (2), thereby controlling the system to ensure that heavier users have more space than lighter users.

[0060] If the weight sensing sensor is provided, the saddle position calculation unit (82) of the server (80) calculates the position of the saddle according to the weight data sensed by the weight sensing sensor.

[0061] The present invention may include a saddle height linkage unit that moves the seat frame (20) forward and backward relative to the top frame (10) in inverse proportion to the saddle height data. For example, the saddle height linkage unit can be configured so that when the saddle height is increased, the seat frame (20) moves forward relative to the top frame (10), allowing the user to grip the steering handlebars (2) more closely, and when the saddle height is decreased, the seat frame (20) moves backward relative to the top frame (10), allowing the user to grip the steering handlebars (2) more closely.

[0062] If the saddle height interlocking unit is provided, the saddle position calculation unit (82) of the server (80) calculates the saddle position in accordance with the saddle height.

[0063] Furthermore, the server (80) can be installed on the bicycle or installed separately from the bicycle.

[0064] If the server (80) is provided separately from the bicycle, the saddle position conditions according to the user's physical condition or user preference can be input to the input unit (81) via communication, and the operation of the rotary motor (33) can be controlled by transmitting the operation signal from the rotary motor operating unit (84) via communication.

[0065] While the above description has been made in relation to the preferred embodiments described above, it will be readily apparent to those skilled in the art that various other modifications and variations are possible without departing from the spirit and scope of the present invention, and that all such changes and modifications fall within the scope of the appended claims. [Explanation of Symbols]

[0066] 10: Top frame 20: Seat frame 30:Position adjustment section 40: Down frame 50: Speed ​​increaser 60: Fork frame 70: Control Panel 80: Server

Claims

1. In a bicycle frame with an adjustable saddle position, A top frame (10) having a certain length; A sheet frame (20) coupled to the top frame (10) and movable in the longitudinal direction of the top frame (10); A position adjustment unit (30) provided on the seat frame (20) is provided to adjust the fixed position of the seat frame (20) by being movable in the longitudinal direction along the top frame (10); The down frame (40) consists of one down frame (40-1) and the other down frame (40-2) that extend downward from both sides of the seat frame (20), with a rear wheel and pedal axle provided on each side, and the down frame (40) moves in conjunction with the movement of the seat frame (20); A speed-increasing device (50) interposed between the down frame on one side (40-1) and the down frame on the other side (40-2) to increase the rotational speed of the rear wheel when the pedal is rotated; and The fork frame (60) is connected to the front of the top frame (10) without welding, and has a steering handlebar (2) attached to its upper part in a height-adjustable manner, and a front wheel attached to its lower part; The position adjustment unit (30) allows the seat frame (20) to move longitudinally along the top frame (10), thereby allowing the saddle (1) provided on the seat frame (20) to move back and forth on the top frame (10) to adjust the position of the saddle. The top frame (10) is provided with a lead screw (11) that is formed to be long in the longitudinal direction. The position adjustment unit (30) is A lead screw coupling portion (31) is coupled to the lead screw (11) at its inner circumference, and a first helical gear (31a) is formed on its outer circumference, An external gear (32) having a second helical gear (32a) formed on the first helical gear (31a) of the lead screw coupling portion (31), A bicycle frame with adjustable saddle position, comprising a rotary motor (33) fixed to the seat frame (20) and coupled to the external gear (32), wherein the rotary motor (33) rotates the external gear (32) to rotate the lead screw coupling portion (31), causing the lead screw coupling portion (31) to move along the longitudinal direction of the lead screw (11) of the top frame (10), thereby moving the seat frame (20) in the longitudinal direction of the top frame (10).

2. In claim 1, A bicycle frame with adjustable saddle position, characterized in that the steering handlebar (2) is further provided with a control panel (70) for controlling the rotational movement of the rotary motor (33).

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