KR20230133463A - Fitness bike, handle height adjustable device thereof and seat height adjustable device thereof - Google Patents

Abstract

The present invention discloses an exercise bike, a handle height adjustment device, and a seat height adjustment device. The exercise bike of the present invention includes a stem locking part that is inserted into the first locking part to fix the position of the stem and pressurizes the stem to press it to the spacer part. The exercise bike includes a post locking part that is inserted into the second locking part to fix the position of the seat post, and presses the seat post to press it to the seat housing part.

Description

Exercise bike, handle height adjuster and seat height adjuster {FITNESS BIKE, HANDLE HEIGHT ADJUSTABLE DEVICE THEREOF AND SEAT HEIGHT ADJUSTABLE DEVICE THEREOF}

The present invention relates to an exercise bike, a handle height adjustment device, and a seat height adjustment device that can adjust the handle height or seat height to suit the user's body type.

In general, exercise bikes are used as indoor exercise equipment to strengthen muscles. The exercise bike allows you to exercise by rotating the wheels by pedaling. These exercise bikes can be divided into spinning bikes that allow you to perform spinning exercises, and indoor bikes that rotate the wheels by rotating the pedals in the forward direction like a bicycle.

Spinning bikes use a non-freewheel structure due to the nature of exercising while pedaling, while indoor bicycles use a freewheel structure.

In the non-freewheel structure applied to spinning bicycles, power is transmitted to the wheels and the wheels rotate when the pedals are rotated in the forward and reverse directions.

Additionally, the freewheel structure applied to indoor bicycles transmits power to the wheels only when the pedals are rotated in the forward direction. However, when the pedal is stopped or rotated in the reverse direction, power is not transmitted to the wheels.

Additionally, Republic of Korea Patent Publication No. 2017-0111669 (published on October 12, 2017, title of invention: Pop-up Bicycle Handlebar) discloses a structure for adjusting the height of the handle by rotating a lever. The height of the handle of a pop-up bicycle can be adjusted by hydraulic drive when the driver operates the lever while riding. However, since this handle height adjustment device adds a separate hydraulic drive device, the weight of the pop-up bicycle may significantly increase and manufacturing costs may increase.

Republic of Korea Patent Publication No. 2019-0073955 (published on June 27, 2019, title of invention: bicycle frame) includes a device that adjusts the height of the saddle by installing a first clamp and a second clamp on the upper and lower sides of the seat post. It has been disclosed. After adjusting the height of the seat tube, bolts and nuts are fastened to the first and second clamps. As the bolts and nuts are tightened, they press the seat post against the seat tube, thereby locking the saddle height. However, since a separate tool must be used to fasten the bolt and nut, the height of the saddle cannot be adjusted without the tool. Additionally, when the first clamp or the second clamp is loosely tightened with bolts and nuts, the height of the seat tube and saddle may change.

The present invention was devised to solve the above-mentioned problems, and its purpose is to provide an exercise bike that can adjust the height of the seat and handle to suit the user's height.

The purpose of the present invention is to provide an exercise bicycle that can prevent the binding and pressing force of the stem locking portion from being released even when an external force or impact is applied to the stem.

The purpose of the present invention is to provide an exercise bicycle in which the height of the stem can not be changed as long as the stem locking unit applies either a binding force or a pressing force to the stem.

The purpose of the present invention is to provide an exercise bicycle that can prevent the binding and pressing force of the post locking portion from being released even when an external force or impact is applied to the seat post.

The purpose of the present invention is to provide an exercise bicycle in which the height of the seat post can not be changed as long as the post locking unit applies either a binding force or a pressing force to the seat post.

In order to solve the above-described problem, the exercise bicycle according to the present invention includes a stem locking part that is inserted into the first locking part to fix the position of the stem and pressurizes the stem to press it to the spacer part.

The exercise bike includes a post locking part that is inserted into the second locking part to fix the position of the seat post, and presses the seat post to press it to the seat housing part.

The stem locking unit includes a stem locking lever rotatably installed on the spacer unit; a stem pusher connected to the stem locking lever and moved to press the stem when the stem locking lever rotates; And a stem restraint part connected to the stem push part to move together with the stem push part, and inserted into the first locking part to fix the position of the stem.

The stem push portion and the stem restraint portion may be manufactured separately and connected to each other.

The stem push unit and the stem restraint unit may be formed as one piece.

The stem pusher and the stem restraint portion may move simultaneously when the stem locking lever rotates to press the stem and be inserted into the first locking portion.

When the stem locking lever rotates, the stem pusher and the stem restraint portion move at a predetermined time interval to press the stem and be inserted into the first locking portion.

A hinge coupling portion is formed on the stem locking lever, and a pressing cam portion may be formed to protrude from the hinge coupling portion to press and release the stem push portion when the stem locking lever rotates.

The stem locking unit includes a first link unit connected to the stem locking lever and the stem push unit; And it may further include a second link part connected to the stem push unit and the stem restraint unit so that the stem push unit and the stem restraint unit move together.

The first link unit may be arranged parallel to the moving direction of the stem push unit. The second link portion may be arranged parallel to the height adjustment direction of the stem.

A link elongated portion may be formed in the second link portion so that the first link portion is movably coupled.

The stem restraint part includes a restraint holder portion fixed to the spacer portion and having a restraint elongated hole formed therein; a stem fixing rod part that is movably installed inside the restraint holder part and is inserted into the first engaging part to fix the stem in position to the spacer part; and a stem elastic member installed on the constraint holder portion to elastically support the stem fixing rod portion.

The post locking unit includes a post locking lever rotatably installed on the frame unit; A wire portion connected to the post locking lever; a post restraint part connected to the wire part so as to be pulled by the wire part, and inserted into the second locking part to fix the position of the seat post; and a post push portion movably coupled to the seat housing portion and pressurized by the post locking lever to press the seat post to the seat housing portion.

The post restraint part and the post push part may move simultaneously when the post locking lever rotates to press the seat post and be inserted into the second locking part of the seat post.

The post restraint part and the post push part may move at a predetermined time difference when the post locking lever rotates, press the seat post, and be inserted into the second locking part of the seat post.

A pressing protrusion may be formed on the post locking lever to press the post push unit.

A pulley portion is installed on one side of the moving direction of the post restraint portion, and the wire portion may pass through the pulley portion and be connected to the post restraint portion.

The post restraint part includes a retainer part fixed to the seat housing part; a post fixing rod part movably installed inside the retainer part and inserted into the second locking part to fix the position of the seat post; and a post elastic member that applies elastic force to press the post fixing rod portion toward the second locking portion.

A stopper may be formed on an outer surface of the post fixing rod unit to limit the movement range of the post fixing rod unit.

The post push unit includes a pressurized portion pressed by the post locking lever; and a pressing portion that extends obliquely from the pressed portion and is in surface contact with the seat post.

According to the present invention, the stem locking portion is inserted into the first locking portion of the stem to restrain the stem and compresses the stem to the spacer portion, so even if an external force or impact is applied to the stem, the binding and pressing force of the stem locking portion can be prevented from being released. . Accordingly, it is possible to prevent the adjusted height of the stem from changing.

According to the present invention, since the stem locking unit is installed to simultaneously apply binding force and pressing force to the stem, the height of the stem may not change as long as the stem locking unit applies either binding force or pressing force to the stem.

According to the present invention, as the stem locking lever is rotated, the stem restraint portion and the stem push portion are moved, so the stem restraint portion is inserted into the first locking portion to prevent a change in the position of the stem, and the stem push portion presses the stem against the spacer portion to push the stem. prevent clearance.

According to the present invention, the post locking part is inserted into the second locking part of the seat post to restrain the seat post and pressurizes the seat post to press it to the seat post, so even if an external force or impact is applied to the seat post, the binding and pressing force of the post locking part is released. You can prevent it from happening. Accordingly, it is possible to prevent the adjusted height of the seat post from changing.

According to the present invention, since the post locking unit is installed to simultaneously apply binding force and pressing force to the seat post, the height of the seat post may not change as long as the post locking unit applies either binding force or pressing force to the seat post.

According to the present invention, since the post locking part is installed to press the seat post to the seat housing part, it is possible to prevent the seat post from being spaced from the seat housing part when the exercise bike is operated.

In addition to the above-described effects, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

1 is a perspective view schematically showing an exercise bike according to the present invention.
FIG. 2 is a side view schematically showing the internal structure of the exercise bike of FIG. 1.
FIG. 3 is a cross-sectional view schematically showing the stem locking portion of the exercise bike of FIG. 1.
Figure 4 is an exploded perspective view schematically showing the stem locking part of the exercise bike of Figure 3.
Figure 5 is a cross-sectional view schematically showing a state in which the stem locking part of Figure 3 adjusts the height of the stem post.
Figure 6 is a cross-sectional view schematically showing a state in which the stem locking part of Figure 3 fixes the position of the stem post.
FIG. 7 is an exploded perspective view schematically showing the seat post and the post locking portion of the exercise bike of FIG. 1.
Figure 8 is a cross-sectional view schematically showing a state of adjusting the height of the seat post in the exercise bike of Figure 7.
Figure 9 is a cross-sectional view schematically showing a state in which the post locking part of Figure 7 fixes the position of the seat post.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is not limited to the embodiments disclosed below, but may be subject to various changes and may be implemented in various different forms. This example is provided solely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. Therefore, the present invention is not limited to the embodiments disclosed below, but substitutes or adds to the configuration of one embodiment and the configuration of another embodiment, as well as all changes and equivalents included in the technical spirit and scope of the present invention. It should be understood to include substitutes.

The attached drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the attached drawings, and all changes and equivalents included in the spirit and technical scope of the present invention are not limited to the attached drawings. It should be understood to include water or substitutes. In the drawings, components may be expressed exaggeratedly large or small in size or thickness for convenience of understanding, etc., but the scope of protection of the present invention should not be construed as limited due to this.

The terms used in this specification are only used to describe specific implementations or examples, and are not intended to limit the invention. And singular expressions include plural expressions, unless the context clearly dictates otherwise. In the specification, terms such as ~include, ~consist of, etc. are intended to indicate the existence of features, numbers, steps, operations, components, parts, or a combination thereof described in the specification. In other words, terms such as ~include, ~consist, etc. in the specification. It should be understood that this does not exclude in advance the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

When a component is referred to as being "on top" or "below" another component, it should be understood that not only is it placed directly on top of the other component, but there may also be other components in between. .

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, an exercise bike according to an embodiment of the present invention will be described.

Figure 1 is a perspective view schematically showing an exercise bike according to the present invention, and Figure 2 is a side view schematically showing the internal structure of the exercise bike of Figure 1.

Referring to Figures 1 and 2, the exercise bike 1 according to an embodiment of the present invention can adjust the height of the handle 143 or the height of the seat 153 to suit the user's body type. The exercise bike 1 includes a frame portion 120, a spacer portion 125, a stem 140, a seat housing portion 126, a seat post 150, a stem locking portion 200, and a post locking portion 300. Includes.

A base portion 113 is installed on the lower side of the frame portion 120 to support the frame portion 120. The base portion 113 may be formed in the form of a rectangular plate connected to the lower side of the frame portion 120. This base portion 113 may be formed in various shapes.

The frame portion 120 supports the drive shaft portion 133 and the rotation shaft portion 160. This frame portion 120 may be formed in various structures depending on the load distribution and structure of the exercise bike 1.

A casing 110 is installed to cover the outside of the frame portion 120. Inside the casing 110, a frame unit 120, a flywheel 170, a brake device 135 (not shown), etc. are installed. The casing 110 may have rounded front and rear sides and a flat plate shape on both sides in the left and right directions. Circular disk holes 111 are formed on both left and right sides of the casing 110.

A rotating disk 131 is installed in the disk hole portion 111. The rotating disk 131 is formed in the shape of a circular panel. The casing 110 and the rotating disk 131 shield the frame unit 120, the flywheel 170, and the brake device 135 from the outside. Accordingly, the possibility of injury can be eliminated by blocking access to users, infants, and pets. Additionally, it is possible to prevent external foreign substances from attaching to components such as the frame unit 120, flywheel 170, and brake device 135. This casing 110 forms the exterior of the exercise bike 1.

The center of the rotating disk 131 is connected to both sides of the drive shaft portion 133. A pedal 130 is connected to the circumference of each rotating disk 131. The pedal 130 of one rotary disk 131 and the pedal 130 of the other rotary disk 131 are disposed on both radial sides (an angle of 180°) of the drive shaft portion 133. When the user steps on the pedal 130, the rotary disk 131 rotates around the drive shaft 133.

The drive shaft portion 133 is installed to penetrate the center of the drive wheel (not shown). The drive wheel 135 and the rotating shaft unit 160 are connected by a power transmission unit (not shown) such as a belt or chain. When the user steps on the pedal 130, the rotary disk 131 rotates. As the rotary disk 131 rotates, the drive shaft portion 133 and the rotary shaft portion 160 rotate. Since the rotating disk 131 shields the disk hole portion 111, even if the rotating disk 131 is rotated by stepping on the pedal 130, injury to the user or infant can be prevented. Additionally, the rotating disk 131 can shield the drive shaft portion 133 and the drive wheel 135 so that the internal parts of the exercise bike 1 are not visible from the outside. Accordingly, it is possible to prevent infants, pets, or body parts from entering the inside of the casing 110.

A spacer portion 125 extends upward on the front side of the casing 110. The spacer portion 125 is supported by the frame portion 120. The spacer portion 125 is formed to be hollow inside so that the stem 140 (stem) can be coupled thereto. The stem 140 includes a stem post 141 coupled to the spacer portion 125 to enable height adjustment. A display unit 144 may be disposed on the upper side of the stem 140. The display unit 144 may output exercise information such as the speed of the exercise bike 1, rotational load, etc. The stem 140 may be coupled to the spacer portion 125 in a height-adjustable manner. A handle 143 is connected to the upper side of the stem 123.

The upper side of the spacer portion 125 is disposed forward than the lower side so that the spacer portion 125 is inclined in the vertical direction. Therefore, as the height of the stem 140 is adjusted higher, the handle 143 moves farther forward. Accordingly, by adjusting the height of the handle 143 as the user's height increases, the height and front-to-back distance of the handle 143 can be appropriately adjusted to suit the user's height.

A sheet housing portion 126 is installed inside the casing 110. The sheet housing portion 126 may be installed to penetrate the interior of the casing 110. The sheet housing portion 126 may be disposed to be inclined in the vertical direction of the casing 110. The seat housing portion 126 is disposed between the drive shaft portion 133 and the rotation shaft portion 160. This sheet housing portion 126 may be formed in various shapes, such as a polygonal pipe or a circular pipe.

A seat post 150 is coupled to the inside of the seat housing portion 126 to enable height adjustment. The upper end of the seat post 150 is disposed rearward than the lower end and is inclined in the vertical direction. A seat 153 is installed on the upper side of the seat post 150. The seat post 150 may be installed inside the seat housing portion 126 to have an adjustable height. The cross section of the seat post 150 may be formed in various ways depending on the shape of the seat housing portion 126.

Since the seat post 150 and the seat housing portion 126 are arranged to be inclined in the vertical direction, as the height of the seat post 150 increases, the seat 153 moves away from the handle 143. Accordingly, by increasing the height of the seat post 150 as the user's height increases, the height and front-to-back distance of the seat 153 and the handle 143 can be appropriately adjusted to suit the user's height.

The flywheel 170 is shaft-coupled to the rotating shaft portion 160. The rotation shaft portion 160 is coupled to the rotation center of the flywheel 170, and the rotation shaft portion 160 and the flywheel 170 are connected via a one-way bearing (not shown). The one-way bearing is arranged to be concentric with the rotating shaft portion 160 and the flywheel 170. Additionally, the rotating shaft unit 160 and the flywheel 170 may be restrained or released by a clutch gear module (not shown). The clutch gear module may also be arranged to be concentric with the rotation shaft portion 160 and the flywheel 170. The flywheel 170 rotates in freewheel mode and non-freewheel mode.

In the freewheel mode, when the rotating shaft portion 160 rotates in the forward direction, the flywheel 170 rotates by the restraining force of the one-way bearing, and when the rotating shaft portion 160 rotates in the reverse direction, the flywheel 170 does not rotate. Indicates driving mode. In the freewheel mode, when the rotation shaft unit 160 rotates in the reverse direction, the rotation shaft unit 160 idles on the flywheel 170.

The non-freewheel mode refers to an operation mode in which the flywheel 170 rotates in all cases where the rotation shaft portion 160 rotates in the forward or reverse direction. In the non-freewheel mode, the rotating shaft portion 160 and the flywheel 170 are locked to each other by the clutch gear module and rotate together.

The stator 180 is installed on the frame unit 120 to adjust the rotational load of the flywheel 170 by applying magnetic force to the flywheel 170. The stator 180 is an electromagnet with a coil 182 wound around an iron core 181. As power is applied to the coil 182, magnetic force is generated in the stator 180. The magnetic force strength of the stator 180 can be adjusted by adjusting the current applied to the coil 182 of the stator 180.

As the rotational load (magnetic force strength of the stator 180) of the flywheel 170 increases, the pedaling force for stepping on the pedal 130 increases, and as the rotational load (magnetic force strength of the stator 180) of the flywheel 170 decreases, the pedal 130 increases. The pressing force of the pedal 130 is reduced. Accordingly, the rotational load of the flywheel 170 can be adjusted by adjusting the magnetic force strength of the stator 180, thereby controlling the user's walking force.

Meanwhile, in the exercise bike 1 according to the present invention, the flywheel 170 may be arranged on the rear side or on the front side with respect to the drive shaft portion 133. The shapes of the frame portion 120 and the casing 110 change depending on the installation location of the flywheel 170. Additionally, the positions of the drive shaft portion 133 and the rotation shaft portion 160 are also changed.

Figure 3 is a cross-sectional view schematically showing the stem locking part of the exercise bike of Figure 1, Figure 4 is an exploded perspective view schematically showing the stem locking part of the exercise bike of Figure 3, and Figure 5 is a stem locking part of Figure 3 showing the stem post. It is a cross-sectional view schematically showing a state in which the height is adjusted, and FIG. 6 is a cross-sectional view schematically showing a state in which the stem locking part of FIG. 3 fixes the position of the stem post.

3 to 6, the exercise bike 1 according to the present invention includes a saddle height adjustment device. The handle height adjustment device includes a spacer portion 125, a stem 140, and a stem locking portion 200.

The stem 140 is coupled to the spacer portion 125 in a height-adjustable manner. A stem post 141 is connected to the lower side of the stem 140. A first locking portion 142 is formed on the stem post 141. The first locking portion 142 may be a plurality of first locking holes arranged along the longitudinal direction of the stem post 141. Additionally, the first locking portion 142 may be a plurality of first locking grooves or first locking protrusions arranged along the longitudinal direction of the stem post 141. This first locking part 142 can be of various forms as long as it is restrained and positioned by the stem locking part 200.

A stem post cover 145 is coupled to the inside of the spacer portion 125. The stem post cover 145 is arranged parallel to the longitudinal direction of the spacer portion 125. The stem post cover 145 may be formed in a rectangular panel shape to cover the rear side of the spacer portion 125. A first through-hole portion 146 and a second through-hole portion 147 may be formed in the stem post cover 145.

The stem locking part 200 is inserted into the first locking part 142 to fix the position of the stem 140 and pressurizes the stem 140 to the spacer part 125. Since the stem locking part 200 is inserted into the first locking part 142 of the stem 140 and pressurizes it while restraining the stem 140, even if an external force or impact is applied to the stem 140, the binding force of the stem locking part 200 It is possible to prevent excessive pressure from being released. Accordingly, it is possible to prevent the adjusted height of the stem 140 from changing.

In addition, even if the insertion constraint of the stem locking part 200 is released, if the stem locking part 200 is pressing the stem 140, the stem can maintain its height-adjusted state. Even if the pressing force of the stem locking unit 200 is released, if the stem locking unit 200 maintains the restraining force for insertion of the stem 140, the stem 140 can maintain its height-adjusted state. In this way, as long as the stem locking unit 200 applies either a binding force or a pressing force to the stem 140, the height of the stem 140 may not change.

The configuration in which the above-described stem locking unit 200 simultaneously applies a binding force and a pressing force to the stem 140 may take various forms. Below, an example of the stem locking unit 200 will be described.

The stem locking unit 200 includes a stem locking lever 210, a stem push unit 220, and a stem restraint unit 230.

The stem locking lever 210 is rotatably installed on the spacer portion 125. For example, the stem locking lever 210 may be hinged to both sides of the first through-hole portion 146 in the stem post cover 145. The stem locking lever 210 is exposed to the outside.

The stem push unit 220 is connected to the stem locking lever 210, and moves to press the stem 140 to the spacer unit 125 when the stem locking lever 210 rotates. The stem push portion 220 is movably inserted into the first through-hole portion 146 of the stem post cover 145. The stem push part 220 includes a push slider 221 inserted into the first through-hole part 146, and a push panel part 222 connected to the push slider 221 to press the stem post 141. The push slider 221 is pressed by the stem locking lever 210, and the push panel portion 222 presses the stem post 141. The push panel portion 222 may be formed in a flat shape to increase the compression area with the push post. The stem push unit 220 presses the stem 140 and presses the stem 140 to the spacer unit 125. Accordingly, it is possible to prevent the stem 140 from changing its position in the vertical direction. Additionally, the stem 140 is pressed against the spacer portion 125 to prevent the stem 140 from being separated from the spacer portion 125 when the exercise bike 1 is operated.

The stem restraint part 230 is connected to the stem push part 220 so as to move together with the stem push part 220, and is inserted into the first locking part 142 to fix the position of the stem 140. The stem restraint part 230 is installed in the second through-hole part 147 of the stem post cover 145. The stem restraint unit 230 may be disposed on the upper or lower side of the stem push unit 220. As the stem locking lever 210 rotates, the stem restraint portion 230 and the stem push portion 220 move together, so that the stem restraint portion 230 is inserted into the first locking portion 142 to position the stem 140. To prevent change, the stem pusher 220 presses the stem 140 against the spacer 125 to prevent clearance of the stem 140.

As described above, when the stem locking lever 210 is rotated, the stem pusher 220 and the stem restraint portion 230 double prevent the position of the stem 140 from changing, thereby maintaining the adjusted height of the handle 143. It can be kept constant. Accordingly, the user can exercise in a posture that suits his or her body type or preference.

A hinge coupling portion 211 is formed in the stem locking lever 210 to allow a stem hinge pin (not shown) to pass through. The hinge coupling portion 211 is disposed on one side of the stem locking lever 210 to correspond to the stem push portion 220.

A pressing cam portion 213 may be formed to protrude from the hinge coupling portion 211 to press and release the stem push portion 220 when the stem locking lever 210 rotates. The pressure cam portion 213 is formed to protrude from the end of the hinge coupling portion 211 toward the stem push portion 220. The rotation trajectory of the pressing cam portion 213 is disposed larger outside the rotation radius of the hinge coupling portion 211. Accordingly, when the stem locking lever 210 is closed downward, the pressure cam unit 213 presses the stem push unit 220 so that the stem push unit 220 presses the stem post 141 to the spacer unit 125. Compress. Additionally, when the stem locking lever 210 is opened upward, the pressure cam unit 213 is rotated to leave the stem push unit 220 and does not press the stem push unit 220.

The push locking unit may further include a first link unit 235 and a second link unit 236.

The first link unit 235 is connected to the stem locking lever 210 and the stem push unit 220. A pair of first link parts 235 are coupled side by side to both sides of the stem locking lever 210 and the stem push part 220. A pair of first link parts 235 are connected to both sides of the first fixed shaft part 233a. Accordingly, when the stem locking lever 210 is rotated, the first link portion 235 and the stem push portion 220 may be moved to press or release the stem post 141.

The second link unit 236 is connected to the stem push unit 220 and the stem restraint unit 230 so that the stem push unit 220 and the stem restraint unit 230 move together. A pair of second link parts 236 are coupled side by side to both sides of the stem push part 220 and the stem restraint part 230. A pair of second link parts 236 are connected to both sides of the second fixed shaft part 232. The second link portion 236 is fixed to both sides of the stem restraint portion 230 to move together with the stem restraint portion 230. Accordingly, the stem push unit 220 and the stem restraint unit 230 are moved together by the second link unit 236.

The first link unit 235 may be arranged parallel to the moving direction of the stem push unit 220 (direction perpendicular to the height adjustment direction of the stem 140). The second link portion 236 may be arranged parallel to the height adjustment direction of the stem 140. At this time, the first link unit 235 and the second link unit 236 may be arranged perpendicular to or close to perpendicular to each other.

As described above, since the first link portion 235 and the second link portion 236 connect the stem locking lever 210, the stem push portion 220, and the stem restraint portion 230, the stem locking lever 210 As is rotated, the stem push unit 220 and the stem restraint unit 230 are linked together.

A link elongated portion 236a is formed in the second link portion 236 so that the first link portion 235 can be coupled to allow clearance. The link elongated portion 236a is formed along the longitudinal direction of the second link portion 236. Since the first link portion 235 and the second link portion 236 are spaced along the link elongated portion 236a, twisting moment is prevented from being applied to the first link portion 235 and the second link portion 236. can do. Furthermore, it is possible to prevent the first link part 235 and the second link part 236 from being damaged.

The stem restraint portion 230 includes a restraint holder portion 231, a stem fixing rod portion 233, and a stem elastic member 234.

The restraint holder portion 231 is fixed to the spacer portion 125, and a restraint elongated hole 231a is formed. The restraint holder portion 231 may be coupled to the second through-hole portion 147 of the stem post cover 145. The restraint holder portion 231 may be formed in a cylindrical shape with the stem post 141 side open. A pair of constraint elongated holes 231a are formed on both sides of the constraint holder portion 231 along the longitudinal direction of the constraint holder portion 231.

The stem fixing rod part 233 is movably installed inside the restraint holder part 231 and is inserted into the first locking part 142 to position and fix the stem 140 to the spacer part 125. The stem fixing rod portion 233 is slidably coupled to the restraint holder portion 231. A step portion 233b may be formed on the outer surface of the stem fixing rod portion 233 to limit the insertion length into the first locking portion 142.

The stem elastic member 234 is installed on the restraint holder portion 231 to elastically support the stem fixing rod portion 233. The stem elastic member 234 applies elastic force to the stem fixing rod portion 233 to push the stem fixing rod portion 233 toward the stem post 141. A coil spring (182) is presented as the stem elastic member (234).

When the stem locking lever 210 is pulled and rotated, the stem push portion 220 and the stem restraint portion 230 move to the opposite side of the stem post 141, thereby contracting the stem elastic member 234. When the external force is released from the stem locking lever 210, the stem elastic member 234 pushes the stem restraint portion 230 toward the stem post 141. Accordingly, the stem push unit 220 and the stem restraint unit 230 are moved toward the stem post 141 by the elastic force of the stem elastic member 234.

Figure 7 is an exploded perspective view schematically showing the seat post and the post locking part in the exercise bike of Figure 1, Figure 8 is a cross-sectional view schematically showing the state of adjusting the height of the seat post in the exercise bike of Figure 7, and Figure 9 is a This is a cross-sectional view schematically showing the state in which the post locking part of FIG. 7 fixes the position of the seat post.

7 to 9, the exercise bike 1 according to the present invention includes a seat height adjustment device. The seat height adjustment device includes a seat housing portion 126, a seat post 150, and a post locking portion 300.

The seat post 150 is coupled to the seat housing portion 126 in a height-adjustable manner. A second locking portion 152 is formed on the seat post 150. The second locking portion 152 may be a plurality of second locking holes arranged along the longitudinal direction of the seat post 150. Additionally, the second locking portion 152 may be a plurality of second locking grooves or second locking protrusions arranged along the longitudinal direction of the seat post 150. This second locking part 152 can be of various forms as long as it is restrained and positioned by the post locking part 300.

A seat post cover 155 is installed on the upper side of the casing 110. The seat post cover 155 may form part of the casing 110. The seat post 150 is installed to penetrate the seat post cover 155. The seat post cover 155 may be formed in a rectangular plate shape to cover a portion of the upper side of the casing 110. A lever seating portion 156 may be formed on the seat post cover 155.

The post locking part 300 is inserted into the second locking part 152 to fix the position of the seat post 150 and pressurizes the seat post 150 to the seat housing part 126. Since the post locking part 300 is inserted into the second locking part 152 of the seat post 150 and pressurizes the seat post 150, even if an external force or impact is applied to the seat post 150, the post locking part 300 ) can prevent the binding and pressing force from being released. Accordingly, it is possible to prevent the adjusted height of the seat post 150 from changing.

In addition, even if the insertion constraint of the post locking unit 300 is released, if the post locking unit 300 is pressing the seat post 150, the seat post 150 can maintain its height-adjusted state. Even if the pressing force of the post locking unit 300 is released, if the post locking unit 300 maintains the restraining force for insertion of the seat post 150, the seat post 150 can maintain its height-adjusted state. In this way, as long as the post locking unit 300 applies either a binding force or a pressing force to the seat post 150, the height of the seat post 150 may not change.

The configuration in which the above-described post locking unit 300 simultaneously applies a binding force and a pressing force to the seat post 150 may take various forms. Below, an example of the post locking unit 300 will be described.

The post locking unit 300 includes a post locking lever 310, a wire unit 320, a post restraint unit 330, and a post push unit 337.

The post locking lever 310 is rotatably installed on the frame portion 120. The post locking lever 310 may be rotatably hinged to the lever seating portion 156. The post locking lever 310 is installed on the upper side of the casing 110 to be exposed to the outside.

The wire portion 320 is connected to the post locking lever 310. The wire portion 320 may be disposed below the post locking lever 310. The wire portion 320 does not expand or contract in the longitudinal direction and may be made of a material that can be gently bent in its shape.

The post restraint part 330 is connected to the wire part 320 so as to be pulled by the wire part 320, and is inserted into the second locking part 152 to fix the position of the seat post 150. The post restraint part 330 may be disposed below the post locking lever 310. Since the post locking part 330 moves as the post locking lever 310 rotates, the post locking part 330 is inserted into the second locking part 152 to prevent the seat post 150 from changing its position.

The post push unit 337 is movably coupled to the seat housing unit 126 and is pressed by the post locking lever 310 to press the seat post 150 to the seat housing unit 126. The post push unit 337 is movably installed on the seat post cover 155. Accordingly, it is possible to prevent the seat post 150 from changing its position in the vertical direction. In addition, the seat post 150 is pressed against the seat housing portion 126 to prevent the seat post 150 from being separated from the seat housing portion 126 when the exercise bike 1 is operated.

The post push part 337 may include a pressed part 337a and a pressed part 337b. The pressed portion 337a is pressed by the post locking lever 310. The pressing portion 337b extends obliquely from the pressed portion 337a and may be in surface contact with the seat post 150. The pressing portion 337b may be formed in a flat shape to increase the pressing area with the seat post 150. The pressing portion 337b is pressed against the seat post 150 to prevent the seat post 150 from being separated from the seat housing portion 126 when the exercise bike 1 is operated.

A pressing protrusion 311 may be formed on the post locking lever 310 to press the post push unit 337. The pressing protrusion 311 is formed to protrude from the post locking lever 310 toward the post push unit 337. Accordingly, when the post locking lever 310 is closed horizontally, the pressing protrusion 311 presses the post push part 337 so that the post push part 337 pushes the seat post 150 into the seat housing part 126. Pressed to. Additionally, when the post locking lever 310 is opened upward, the pressing protrusion 311 is rotated downward so as to escape the post push part 337 and does not press the post push part 337. This pressing protrusion 311 presses the post push unit 337 only when the seat 153 locking lever is closed to press the seat post 150 to the seat housing unit 126.

A pulley portion 338 is installed on one side of the moving direction of the post restraint portion 330, and the wire portion 320 passes through the pulley portion 338 and is connected to the post restraint portion 330. At this time, both sides of the pulley portion 338 are connected to the fixing bracket 322, and the fixing bracket 322 is fixed to the casing 110. The location and installation number of the pulley portion 338 may be changed depending on the positions of the post restraint portion 330 and the post locking lever 310 or surrounding structures.

The wire portion 320 connects the post locking lever 310 and the post restraint portion 330, and the pulley portion 338 supports the wire portion 320, so as the post locking lever 310 rotates, the post locking lever 310 is connected to the post locking lever 310. The restraining part 330 may be inserted into the second engaging part 152 or may be removed from the second engaging part 152.

The post restraint part 330 includes a retainer part 331, a fixed rod part, and a post elastic member 335.

The retainer portion 331 is fixed to the seat housing portion 126. The retainer portion 331 may be formed in the shape of a cylinder or polygonal cylinder with the seat post 150 side open. The retainer portion 331 is fastened to the seat housing portion 126. The retainer portion 331 is disposed to face the second locking portion 152 of the seat post 150.

The post fixing rod part 332 is movably installed inside the retainer part 331 and is inserted into the second locking part 152 to fix the position of the seat post 150. The post fixing rod portion 332 is inserted into the catching hole portion 126a formed in the seat housing portion 126. The post fixing rod portion 332 may be moved in a direction perpendicular to the height adjustment direction of the seat post 150.

The post elastic member 335 applies elastic force to press the post fixing rod portion 332 toward the second locking portion 152. The post elastic member 335 applies elastic force to the post fixing rod portion 332 in the direction in which the post fixing rod portion 332 is inserted into the second locking portion 152. A coil spring (182) is presented as the post elastic member (335). Accordingly, if no external force is applied to the post locking lever 310, the post elastic member 335 applies elastic force to the post fixing rod portion 332 to prevent it from falling out of the second locking portion 152.

A stopper 333 may be formed on the outer surface of the post fixing rod part 332 to limit the movement range of the post fixing rod part 332. The stopper 333 may slideably contact the inner surface of the retainer portion 331. When the post fixing rod portion 332 is inserted into the second locking portion 152, the stopper 333 contacts the outer surface of the locking hole portion 126a. Accordingly, the depth at which the post fixing rod part 332 is inserted into the second locking part 152 can be limited.

As described above, the present invention has been described with reference to the illustrative drawings, but the present invention is not limited to the embodiments and drawings disclosed herein, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that transformation can occur. In addition, although the operational effects according to the configuration of the present invention were not explicitly described and explained while explaining the embodiments of the present invention above, it is natural that the predictable effects due to the configuration should also be recognized.

1: exercise bike 110: casing
111: Disk hole part 113: Base part
120: frame part 125: spacer part
126: Seat housing portion 126a: Locking groove portion
130: Pedal 131: Rotating disk
133: Drive shaft part 135: Brake device
140: stem 141: stem post
142: first engaging portion 143: handle
144: Display unit 145: Stem post cover
146: First through hole part 147: Second through hole part
150: Seat post 152: Second locking portion
153: Seat 155: Seat post cover
156: Lever seating portion 160: Rotating shaft portion
170: flywheel 180: stator
181: iron core 182: coil
200: Stem locking unit 210: Stem locking lever
211: Hinge coupling part 213: Pressure cam part
220: Stem push unit 221: Push slider
222: Push plate part 230: Stem restraint part
231: Restraint holder part 231a: Restraint long hole part
232: First fixed shaft part 233: Stem fixed rod part
233a: Second fixed shaft portion 233b: Step portion
234: stem elastic member 235: first link portion
236: Second link unit 236a: Link long study unit
300: Post locking unit 310: Post locking lever
311: compression protrusion 320: wire portion
322: fixing bracket 330: post restraint part
331: retainer part 332: post fixed rod part
333: Stopper 335: Post elastic member
337: post push portion 337a: pressurized portion
337b: pressurizing part 338: pulley part

Claims (20)

A spacer portion extending upward from the frame portion;
A stem coupled to the spacer portion to enable height adjustment and forming a first locking portion;
A seat housing portion installed on the frame portion;
a seat post that is coupled to the seat housing portion in a height-adjustable manner and has a second locking portion;
a stem locking part that is inserted into the first locking part to fix the position of the stem and pressurizes the stem to press it against the spacer part; and
An exercise bike comprising: a post locking part that is inserted into the second locking part to fix the position of the seat post and pressurizes the seat post to press it to the seat housing part. According to paragraph 1,
The stem locking part,
a stem locking lever rotatably installed on the spacer portion;
a stem pusher connected to the stem locking lever and moved to press the stem when the stem locking lever rotates; and
An exercise bike comprising; a stem restraint part connected to the stem push part to move together with the stem push part, and inserted into the first locking part to fix the position of the stem. According to paragraph 2,
A hinge coupling portion is formed on the stem locking lever,
An exercise bike in which a pressing cam portion is formed to protrude from the hinge coupling portion to press and release the stem push portion when the stem locking lever rotates. According to paragraph 3,
The stem locking part,
A first link unit connected to the stem locking lever and the stem push unit; and
An exercise bike further comprising a second link unit connected to the stem push unit and the stem restraint unit so that the stem push unit and the stem restraint unit move together. According to paragraph 4,
The first link portion is arranged parallel to the moving direction of the stem push portion,
The second link portion is disposed parallel to the height adjustment direction of the stem. According to paragraph 4,
An exercise bike wherein a link elongated portion is formed in the second link portion so that the first link portion is movably coupled. According to paragraph 2,
The stem restraint part,
a restraint holder portion fixed to the spacer portion and forming a restraint elongated hole;
a stem fixing rod part that is movably installed inside the restraint holder part and is inserted into the first engaging part to fix the stem in position to the spacer part; and
An exercise bike comprising; a stem elastic member installed on the constraint holder portion to elastically support the stem fixing rod portion. According to paragraph 1,
The post locking unit,
A post locking lever rotatably installed on the frame unit;
A wire portion connected to the post locking lever;
a post restraint part connected to the wire part so as to be pulled by the wire part, and inserted into the second locking part to fix the position of the seat post; and
An exercise bike comprising; a post push portion movably coupled to the seat housing portion and pressed by the post locking lever to press the seat post to the seat housing portion. According to clause 8,
An exercise bike wherein a pressing protrusion is formed on the post locking lever to press the post push unit. According to clause 8,
A pulley portion is installed on one side of the moving direction of the post restraint portion,
An exercise bike wherein the wire portion passes through the pulley portion and is connected to the post restraint portion. According to clause 8,
The post restraint part,
a retainer portion fixed to the seat housing portion;
A post fixing rod part movably installed inside the retainer part and inserted into the second locking part to fix the seat post in position; and
An exercise bike comprising; a post elastic member that applies an elastic force to press the post fixing rod portion toward the second locking portion. According to clause 11,
An exercise bike wherein a stopper is formed on an outer surface of the post fixing rod portion to limit the movement range of the post fixing rod portion. According to clause 8,
The post push unit,
A pressurized portion pressed by the post locking lever; and
An exercise bike comprising: a pressurized portion that extends obliquely from the pressurized portion and is in surface contact with the seat post. A spacer portion extending upward from the frame portion;
A stem coupled to the spacer portion to enable height adjustment and forming a first locking portion; and
A stem locking part that is coupled to the first locking part to fix the position of the stem and pressurizes the stem to press it to the spacer part. According to clause 14,
The stem locking part,
a stem locking lever rotatably installed on the spacer portion;
a stem pusher connected to the stem locking lever and moved toward the stem to press the stem when the stem locking lever rotates; and
A stem restraint part connected to the stem push part to move together with the stem push part, and inserted into the first locking part to fix the position of the stem. According to clause 15,
The stem locking part,
A first link unit connected to the stem locking lever and the stem push unit; and
A handle height adjustment device for an exercise bike, further comprising a second link part connected to the stem push unit and the stem restraint unit so that the stem push unit and the stem restraint unit move together. According to clause 15,
The stem restraint part,
a restraint holder portion fixed to the spacer portion and forming a restraint elongated hole;
a stem fixing rod part movably installed inside the restraint holder part and inserted into the first engaging part to fix the position of the stem post; and
A stem elastic member installed on the restraint holder portion to elastically support the stem fixing rod portion. A seat housing portion installed on the frame portion;
a seat post that is coupled to the seat housing portion in a height-adjustable manner and has a second locking portion; and
A post locking part that is coupled to the second locking part to fix the position of the seat post and pressurizes the seat post to press it to the seat housing part. According to clause 18,
The post locking unit,
A post locking lever rotatably installed on the frame unit;
A wire portion connected to the post locking lever;
a post restraint part connected to the wire part so as to be pulled by the wire part, and inserted into the second locking part to fix the position of the seat post; and
A post push unit movably coupled to the seat housing unit and pressed by the post locking lever to press the seat post to the seat housing unit. According to clause 18,
The post restraint part,
a retainer portion fixed to the seat housing portion;
a post fixing rod part movably installed inside the retainer part and inserted into the second locking part to fix the position of the seat post; and
A post elastic member that applies an elastic force to press the post fixing rod portion toward the second locking portion.