CN212282694U - Exercise bicycle convenient to maintain and comfortable to ride - Google Patents
Exercise bicycle convenient to maintain and comfortable to ride Download PDFInfo
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- CN212282694U CN212282694U CN202020595756.6U CN202020595756U CN212282694U CN 212282694 U CN212282694 U CN 212282694U CN 202020595756 U CN202020595756 U CN 202020595756U CN 212282694 U CN212282694 U CN 212282694U
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Abstract
The utility model relates to an exercise bicycle field specifically relates to a be convenient for maintain and ride comfortable exercise bicycle, which comprises a vehicle rack, pedal mechanism, belt drive mechanism, the flywheel, resistance mechanism, pedal mechanism runs through the frame and is connected with the rotation of frame, the flywheel is installed in the frame inside and is connected with the rotation of frame, belt drive mechanism installs in outside one side of frame, pedal mechanism passes through belt drive mechanism and is connected with the flywheel transmission, resistance mechanism installs inside the frame, resistance mechanism is used for applying the resistance for the rotary motion of flywheel, this exercise bicycle's belt drive mechanism can maintain or change easily, need not to dismantle the flywheel.
Description
Technical Field
The utility model relates to an exercise bicycle field specifically is to relate to a be convenient for maintain and ride comfortable exercise bicycle.
Background
The exercise bicycle is called a power bicycle in the field of sports science, and is divided into two types, namely a vertical type exercise bicycle and a back-to-back type exercise bicycle (also called a horizontal type exercise bicycle), and the strength (power) of the exercise bicycle can be adjusted to achieve the effect of exercise, so that the exercise bicycle is called as an exercise bicycle.
In the existing exercise bicycle, the small belt pulleys are all located on the inner side of the frame, for example, the contents disclosed in chinese patent CN206350897U and chinese patent CN205988522U, and observing the connection relationship of the belt transmission mechanisms, it can be found that the belts are all located between the supporting plates.
However, after the belt is used for a long time, the belt is inevitably loosened, the tension force of the belt is greatly changed after the belt is loosened, the power transmission effect is affected, after-sales personnel need to maintain regularly, the service life of the belt is usually within two years, after-sales personnel also need to replace the belt regularly, and when the belt is replaced, the whole flywheel needs to be detached, which is quite troublesome.
Therefore, there is a need for an exercise bicycle having a belt drive mechanism that is easy to maintain and disassemble.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a body-building vehicle is provided, the belt transmission mechanism of the body-building vehicle can be easily maintained or replaced, and the flywheel does not need to be disassembled.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model provides an exercise bicycle convenient to maintain and comfortable rides, including the frame, pedal mechanism, belt drive mechanism, the flywheel, resistance mechanism, pedal mechanism runs through the frame and is connected with the frame rotation, the flywheel is installed inside the frame and is connected with the frame rotation, belt drive mechanism installs in the outside one side of frame, pedal mechanism passes through belt drive mechanism and is connected with the flywheel transmission, resistance mechanism installs inside the frame, resistance mechanism is used for applying the resistance for the rotary motion of flywheel.
Preferably, the belt transmission mechanism comprises a large belt pulley, a small belt pulley, a belt and a tensioning mechanism, the large belt pulley is in transmission connection with the small belt pulley through the belt, the tensioning mechanism is used for tensioning the belt, the large belt pulley is coaxial and fixedly connected with the pedal mechanism, and the small belt pulley is coaxial and fixedly connected with the flywheel.
Preferably, the tensioning mechanism comprises a force arm and a tensioning wheel, the force arm is mounted on the frame, the tensioning wheel is rotatably mounted at one end, close to the belt, of the force arm, the tensioning wheel abuts against the outer peripheral surface of the belt, and internal stress exists between the tensioning wheel and the belt.
Preferably, the tensioning mechanism further comprises an elastic part and a support, the support is fixedly connected with the frame, the middle end of the force arm is rotatably connected with the frame, the other end of the force arm is elastically connected with the support through the elastic part, and the elastic part is used for driving the force arm and the support to be close to each other.
Preferably, the resilient member is a tension gas spring.
Preferably, the tensioning mechanism further comprises an external thread column and an internal thread sleeve, the external thread column is in threaded connection with the internal thread sleeve, the external thread column and the internal thread sleeve are combined to form a first rotating shaft fixedly mounted on the frame, and the middle end of the force arm is rotatably connected with the frame through the first rotating shaft.
Preferably, the flywheel includes flywheel, second pivot, bearing frame, and flywheel and the coaxial and fixed connection of second pivot, bearing frame and frame fixed connection, second pivot level set up and rotate with the frame through the bearing frame and be connected, and the bearing frame sets up in the both ends of second pivot, and the one end of second pivot is provided with the connecting portion that the axial extends outwards, and connecting portion extend to the outside of frame, belt lace wheel and connecting portion fixed connection.
Preferably, the outer circumferential surface of the connecting part is provided with threads, the inner circumferential surface of the small belt pulley is provided with threads, the connecting part is in threaded connection with the small belt pulley, and the outer circumferential surface of the small belt pulley is provided with a plurality of flat grooves which are symmetrical around the axis of the small belt pulley; the terminal surface of connecting portion is provided with the axial inwards sunken screw hole, and self-locking bolt is installed to screw hole internal thread, and self-locking bolt's the portion that emits supports and leans on the terminal surface at the belt lace wheel, and the screw thread of connecting portion is opposite with the screw thread direction of screw hole.
Preferably, the bearing block comprises a bearing frame, an end cover and a bearing, the bearing frame is fixedly connected with the frame, the end cover is fixedly connected with the bearing frame, the bearing frame is provided with a concave part for the bearing to be embedded into, the bearing frame is abutted against the outer circumferential surface of the bearing outer ring and one side of the outer circumferential surface of the bearing outer ring, the end cover is abutted against the other side of the bearing outer ring, and the second rotating shaft is fixedly connected with the inner ring of the bearing.
Preferably, the contact surface of the bearing frame and the end cover is triangular, and a through hole is formed in each corner of the contact part of the bearing frame and the end cover.
Compared with the prior art, the utility model beneficial effect who has is:
the user treads the pedal mechanism, the pedal mechanism drives the flywheel to rotate through the belt transmission mechanism, the flywheel is applied with resistance by the resistance mechanism when rotating, the resistance acts on the body of the user in the opposite direction, thus playing a body-building effect; during maintenance, after-sales personnel can maintain or change belt drive mechanism easily, need not to dismantle pedal mechanism or flywheel, and simultaneously, because whole belt drive mechanism all installs in the side of frame, so the inside space that need not to design and be used for installing belt drive mechanism of frame, make the holistic width of frame can reduce, the frame width reduces and just means that the interval between two pedal ends of pedal mechanism can design littleer, less pedal end interval accords with ergonomic more, it is more comfortable to ride, user's both legs fork is too big when avoiding riding, lead to user's sacrum to receive the damage, the frame also can be made frivolous more, thereby reduction in production cost.
Drawings
Fig. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of the present invention with a portion of the housing removed;
FIG. 3 is a perspective view of the internal structure of the present invention;
FIG. 4 is a schematic perspective view of the disassembled belt transmission mechanism of the present invention;
fig. 5 is a front view of the internal structure of the present invention;
FIG. 6 is a cross-sectional view at section A-A of FIG. 5;
FIG. 7 is a perspective view of FIG. 6;
FIG. 8 is an enlarged view of a portion of FIG. 7 at C;
FIG. 9 is a cross-sectional view at section B-B of FIG. 5;
FIG. 10 is an enlarged view of a portion of FIG. 9 at D;
fig. 11 is an exploded axial view of the flywheel and its rotating shaft of the present invention;
FIG. 12 is a cross-sectional view at section E-E of FIG. 11;
FIG. 13 is a perspective view of FIG. 11;
the reference numbers in the figures are:
1-a vehicle frame; 1 a-a body; 1 b-a handrail; 1 c-cushion; 1 d-a housing;
2-a pedal mechanism;
3-a belt transmission mechanism; 3 a-big belt pulley; 3 b-a small belt pulley; 3b 1-flat slot; 3 c-a belt; 3 d-a tensioning mechanism; 3d 1-moment arm; 3d 2-tension wheel; 3d 3-elastic member; 3d 4-seat; 3d 5-externally threaded post; 3d6 — internal threaded sleeve;
4-a flywheel; 4 a-a flywheel; 4 b-a second shaft; 4b 1-connection; 4b 2-threaded hole; 4b 3-self-locking bolt; 4 c-bearing seat; 4c 1-bearing bracket; 4c2 — end caps; 4c 3-bearing;
5-a resistance mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The utility model provides an exercise bicycle convenient to maintain and comfortable ride, as shown in fig. 2, including frame 1, pedal mechanism 2, belt drive mechanism 3, flywheel 4, resistance mechanism 5, pedal mechanism 2 runs through frame 1 and is connected with frame 1 rotation, flywheel 4 is installed inside frame 1 and is connected with frame 1 rotation, belt drive mechanism 3 is installed in outside one side of frame 1, pedal mechanism 2 is connected with flywheel 4 transmission through belt drive mechanism 3, resistance mechanism 5 is installed inside frame 1, resistance mechanism 5 is used for applying the resistance for the rotary motion of flywheel 4.
As shown in fig. 1, the frame 1 includes a body 1a, a handrail 1b, a cushion 1c, and a cover 1d, the handrail 1b is used for being held by both hands of a user, the cushion 1c is used for being seated by the user, and the cover 1d is used for covering a belt transmission mechanism 3, a flywheel 4, and a resistance mechanism 5; when the device is used, a user sits on the seat cushion 1c, holds the handrails 1b with both hands and then treads the pedal mechanism 2, the pedal mechanism 2 drives the flywheel 4 to rotate through the belt transmission mechanism 3, resistance is applied to the flywheel 4 by the resistance mechanism 5 when the flywheel 4 rotates, and the resistance reversely acts on the body of the user, so that the body-building effect is achieved; in maintenance, after-sales personnel detach the housing 1d to expose all the belt transmission mechanisms 3, so that the belt transmission mechanisms 3 can be easily repaired or replaced without detaching the pedal mechanisms 2 or the flywheel 4.
Simultaneously, because whole belt drive mechanism 3 all installs in the side of frame 1, so frame 1 is inside need not to design the space that is used for installing belt drive mechanism 3, make the holistic width of frame 1 reduce, frame 1 width reduces and just means that the interval between two pedal ends of pedal mechanism 2 can design littleer, less pedal end interval accords with ergonomic more, user's both legs when avoiding riding fork too big, lead to user's sacrum to receive the damage, housing 1d also can be made frivolous, thereby reduce manufacturing cost.
The resistance mechanism 5 mainly has two forms, one form is an internal magnetic control type or an external magnetic control type, the internal magnetic control type is provided with a magnet inside the flywheel 4, the external magnetic control type is provided with a magnet outside the flywheel 4 and provides resistance to the flywheel 4 through magnetic force, the other form is a friction control type, the friction control type provides resistance through mutual friction between the flywheel 4 and a friction plate, the external magnetic control type is selected, and the specific structure and the working principle of the external magnetic control type are mature in the related field of the exercise bicycle, and the description is omitted herein.
As shown in fig. 3 and 4, the belt transmission mechanism 3 includes a large belt pulley 3a, a small belt pulley 3b, a belt 3c, and a tensioning mechanism 3d, the large belt pulley 3a is in transmission connection with the small belt pulley 3b through the belt 3c, the tensioning mechanism 3d is used for tensioning the belt 3c, the large belt pulley 3a is coaxial and fixedly connected with the pedal mechanism 2, and the small belt pulley 3b is coaxial and fixedly connected with the flywheel 4.
When a user tramples the pedal mechanism 2 to enable the pedal mechanism to rotate on the frame 1, the pedal mechanism 2 drives the large belt pulley 3a to rotate, the large belt pulley 3a drives the small belt pulley 3b to rotate through the belt 3c, the small belt pulley 3b drives the flywheel 4 to rotate, and the tensioning mechanism 3d tensions the belt 3c all the time, so that the belt 3c has good friction force and can transmit torque completely.
As shown in fig. 3, the tensioning mechanism 3d includes a force arm 3d1 and a tensioning pulley 3d2, the force arm 3d1 is mounted on the frame 1, the tensioning pulley 3d2 is rotatably mounted at one end of the force arm 3d1 close to the belt 3c, the tensioning pulley 3d2 abuts against the outer peripheral surface of the belt 3c, and internal stress exists between the tensioning pulley 3d2 and the belt 3 c.
The arm 3d1 is used to mount the tension pulley 3d2, and the tension pulley 3d2 is used to abut against and press the outer peripheral surface of the belt 3c inward, so that the belt 3c is tensioned over the large pulley 3a and the small pulley 3 b.
As shown in fig. 6 and 7, the tensioning mechanism 3d further includes an elastic member 3d3 and a support 3d4, the support 3d4 is fixedly connected to the frame 1, the middle end of the force arm 3d1 is rotatably connected to the frame 1, the other end of the force arm 3d1 is elastically connected to the support 3d4 through an elastic member 3d3, and the elastic member 3d3 is used for driving the force arm 3d1 and the support 3d4 to approach each other.
The elastic member 3d3 is used to drive one end of the power arm 3d1 to approach the holder 3d4, so that the other end of the force arm 3d1 drives the tension pulley 3d2 to press the outer circumferential surface of the belt 3c to tension the belt inwards, after a period of use, after the belt 3c is loosened, the elastic member 3d3 contracts naturally, the force arm 3d1 rotates to drive the tension pulley 3d2 to further press the belt 3c, so that the belt 3c is tensioned again.
The elastic member 3d3 is a tension spring.
The tension of the tension spring is changed rapidly along with the change of the shape of the tension spring, the tension force arm 3d1 is pulled by the tension spring, so that the pressure change of the tension wheel 3d2 on the belt 3c is large, however, the tension of the tension spring is constant all the time, the pressure applied to the belt 3c by the tension wheel 3d2 is constant all the time, manual adjustment is not needed, the situation that the belt 3c is loosened due to too small tension force cannot occur, and the situation that the service life of the belt 3c is reduced due to too large tension force cannot occur.
As shown in fig. 8, the tensioning mechanism 3d further includes an external threaded post 3d5 and an internal threaded sleeve 3d6, the external threaded post 3d5 is in threaded connection with the internal threaded sleeve 3d6, the external threaded post 3d5 and the internal threaded sleeve 3d6 are combined to form a first rotating shaft fixedly mounted on the frame 1, and the middle end of the force arm 3d1 is rotatably connected with the frame 1 through the first rotating shaft.
A first through hole which is in clearance fit with the outer circumferential surface of the internal thread sleeve 3d6 is formed in the frame 1, and the first rotating shaft is installed on the frame 1 through the first through hole; the force arm 3d1 is provided with a second through hole in clearance fit with the outer circumferential surface of the internal thread sleeve 3d6, and the force arm 3d1 is arranged on the first rotating shaft through the second through hole; one end of the externally threaded column 3d5, which is far away from the internally threaded sleeve 3d6, is provided with a first annular flange which extends radially outwards and is abutted against the side face of the frame 1; one end of the internal threaded sleeve 3d6, which is far away from the external threaded column 3d5, is provided with a second annular flange extending radially outwards, and the second annular flange abuts against the side face of the force arm 3d 1.
As shown in fig. 9, the flywheel 4 includes an inertia wheel 4a, a second rotating shaft 4b, and a bearing seat 4c, the inertia wheel 4a and the second rotating shaft 4b are coaxial and fixedly connected, the bearing seat 4c is fixedly connected with the frame 1, the second rotating shaft 4b is horizontally disposed and rotatably connected with the frame 1 through the bearing seat 4c, the bearing seats 4c are disposed at two ends of the second rotating shaft 4b, one end of the second rotating shaft 4b is provided with a connecting portion 4b1 extending axially outwards, the connecting portion 4b1 extends to the outside of the frame 1, and the belt pulley 3b is fixedly connected with the connecting portion 4b 1.
The second rotating shaft 4b is rotatably mounted on the frame 1 through a pair of bearing seats 4c fixedly connected with the frame 1, the small belt pulley 3b rotates to drive the connecting part 4b1 to rotate, the connecting part 4b1 transmits torque to the inertia wheel 4a through the second rotating shaft 4b, and the small belt pulley 3b is located on the outer side of the frame 1 and detachably connected with the connecting part 4b1, so that the small belt pulley 3b is convenient to detach, maintain or replace.
As shown in fig. 10 and 13, the outer circumferential surface of the connecting portion 4b1 is provided with threads, the inner circumferential surface of the small belt pulley 3b is provided with threads, the connecting portion 4b1 is in threaded connection with the small belt pulley 3b, and the outer circumferential surface of the small belt pulley 3b is provided with a plurality of flat grooves 3b1 which are symmetrical around the axis of the small belt pulley 3 b; the end face of the connecting part 4b1 is provided with a threaded hole 4b2 which is axially and inwards recessed, a self-locking bolt 4b3 is installed in the threaded hole 4b2 in a threaded mode, the cap part of the self-locking bolt 4b3 abuts against the end face of the small belt pulley 3b, and the thread direction of the connecting part 4b1 is opposite to that of the threaded hole 4b 2.
The installer rotates the flat notch 3b1 by a wrench, so that the small pulley 3b is threadedly mounted on the coupling portion 4b1, the installer then rotates self-locking bolt 4b3 with the screwdriver, causing self-locking bolt 4b3 to thread into threaded hole 4b2, meanwhile, the cap part of the self-locking bolt 4b3 is abutted against the end face of the small belt pulley 3b, and because the thread directions of the connecting part 4b1 and the threaded hole 4b2 are opposite, therefore, when the self-locking bolt 4b3 and the small belt pulley 3b are disassembled, the self-locking bolt and the small belt pulley need to be rotated towards different directions respectively to be disassembled, meanwhile, as the cap part of the self-locking bolt 4b3 and the end surface of the small belt pulley 3b have larger friction force, therefore, the self-locking bolt 4b3 and the small belt pulley 3b do not rotate relatively during normal use, so that the connection between the small belt pulley 3b and the connecting part 4b1 is stable and firm.
The bearing seat 4c comprises a bearing frame 4c1, an end cover 4c2 and a bearing 4c3, the bearing frame 4c1 is fixedly connected with the frame 1, the end cover 4c2 is fixedly connected with the bearing frame 4c1, the bearing frame 4c1 is provided with a concave part for the bearing 4c3 to be embedded in, the bearing frame 4c1 abuts against the outer circumferential surface and one side of the outer ring of the bearing 4c3, the end cover 4c2 abuts against the other side of the outer ring of the bearing 4c3, and the second rotating shaft 4b is fixedly connected with the inner ring of the bearing 4c 3.
The bearing frame 4c1 and the end cap 4c2 are combined into a fixer fixedly connected with the frame 1 and clamping the outer ring of the bearing 4c3, thereby limiting the radial and axial movement of the bearing 4c3, and the second rotating shaft 4b is rotatably mounted on the frame 1 through the fixed bearing 4c 3.
As shown in fig. 12, the contact surface of the bearing holder 4c1 and the end cap 4c2 is triangular, and a through hole is provided at each corner of the contact portion between the bearing holder 4c1 and the end cap 4c 2.
The bearing frame 4c1 and the end cover 4c2 are fixedly connected with the frame 1 through bolts penetrating through each through hole, the triangular structure is stable, and materials are saved.
The utility model discloses a theory of operation:
when the device is used, a user sits on the seat cushion 1c, holds the handrails 1b with both hands and then treads the pedal mechanism 2, the pedal mechanism 2 drives the flywheel 4 to rotate through the belt transmission mechanism 3, resistance is applied to the flywheel 4 by the resistance mechanism 5 when the flywheel 4 rotates, and the resistance reversely acts on the body of the user, so that the body-building effect is achieved; during maintenance, after-sales personnel detach the housing 1d to expose all the belt transmission mechanisms 3, so that the belt transmission mechanisms 3 can be easily maintained or replaced without detaching the pedal mechanisms 2 or the flywheel 4; simultaneously, because whole belt drive mechanism 3 all installs in the side of frame 1, so frame 1 is inside need not to design the space that is used for installing belt drive mechanism 3, make the holistic width of frame 1 reduce, frame 1 width reduces and just means that the interval between two pedal ends of pedal mechanism 2 can design littleer, less pedal end interval accords with ergonomic more, it is more comfortable to ride, user's both legs fork is too big when avoiding riding, lead to user's sacrum to receive the damage, housing 1d also can be made frivolous, thereby reduce manufacturing cost.
Claims (10)
1. The utility model provides an exercise bicycle convenient to maintain and ride comfortablely, a serial communication port, including frame (1), pedal mechanism (2), belt drive mechanism (3), flywheel (4), resistance mechanism (5), pedal mechanism (2) run through frame (1) and rotate with frame (1) and be connected, flywheel (4) are installed in frame (1) inside and rotate with frame (1) and be connected, belt drive mechanism (3) are installed in outside one side of frame (1), pedal mechanism (2) are connected with flywheel (4) transmission through belt drive mechanism (3), resistance mechanism (5) are installed in frame (1) inside, resistance mechanism (5) are used for applying the resistance for the rotary motion of flywheel (4).
2. An exercise bicycle convenient for maintenance and comfortable for riding according to claim 1, characterized in that the belt transmission mechanism (3) comprises a large belt pulley (3a), a small belt pulley (3b), a belt (3c) and a tensioning mechanism (3d), the large belt pulley (3a) is in transmission connection with the small belt pulley (3b) through the belt (3c), the tensioning mechanism (3d) is used for tensioning the belt (3c), the large belt pulley (3a) is coaxial and fixedly connected with the pedal mechanism (2), and the small belt pulley (3b) is coaxial and fixedly connected with the flywheel (4).
3. An exercise bicycle convenient for maintenance and comfortable for riding according to claim 2, characterized in that the tensioning mechanism (3d) comprises a force arm (3d1) and a tensioning wheel (3d2), the force arm (3d1) is mounted on the frame (1), the tensioning wheel (3d2) is rotatably mounted at one end of the force arm (3d1) close to the belt (3c), the tensioning wheel (3d2) abuts against the outer circumferential surface of the belt (3c), and internal stress is provided between the tensioning wheel (3d2) and the belt (3 c).
4. An exercise bicycle convenient for maintenance and comfortable for riding as claimed in claim 3, wherein the tensioning mechanism (3d) further comprises an elastic member (3d3) and a support (3d4), the support (3d4) is fixedly connected with the frame (1), the middle end of the force arm (3d1) is rotatably connected with the frame (1), the other end of the force arm (3d1) is elastically connected with the support (3d4) through an elastic member (3d3), and the elastic member (3d3) is used for driving the force arm (3d1) and the support (3d4) to approach each other.
5. An exercise bike easy to maintain and comfortable to ride according to claim 4, characterized in that the elastic element (3d3) is a tension spring.
6. An exercise bicycle convenient for maintenance and comfortable for riding as claimed in claim 4, wherein the tensioning mechanism (3d) further comprises an externally threaded column (3d5) and an internally threaded sleeve (3d6), the externally threaded column (3d5) and the internally threaded sleeve (3d6) are in threaded connection, the externally threaded column (3d5) and the internally threaded sleeve (3d6) are combined to form a first rotating shaft fixedly mounted on the frame (1), and the middle end of the force arm (3d1) is rotatably connected with the frame (1) through the first rotating shaft.
7. An exercise bicycle convenient to maintain and comfortable to ride according to claim 2, wherein the flywheel (4) comprises an inertia wheel (4a), a second rotating shaft (4b) and a bearing seat (4c), the inertia wheel (4a) and the second rotating shaft (4b) are coaxial and fixedly connected, the bearing seat (4c) is fixedly connected with the frame (1), the second rotating shaft (4b) is horizontally arranged and rotatably connected with the frame (1) through the bearing seat (4c), the bearing seat (4c) is arranged at two ends of the second rotating shaft (4b), one end of the second rotating shaft (4b) is provided with a connecting part (4b1) extending axially outwards, the connecting part (4b1) extends to the outer side of the frame (1), and the belt pulley (3b) is fixedly connected with the connecting part (4b 1).
8. An exercise bike convenient for maintenance and comfortable for riding as claimed in claim 7, wherein the outer circumference of the connecting part (4b1) is provided with screw threads, the inner circumference of the small belt pulley (3b) is provided with screw threads, the connecting part (4b1) is in screw thread connection with the small belt pulley (3b), the outer circumference of the small belt pulley (3b) is provided with a plurality of flat slots (3b1) which are symmetrical around the axis of the small belt pulley (3 b); the end face of the connecting portion (4b1) is provided with a threaded hole (4b2) which is axially and inwards recessed, a self-locking bolt (4b3) is installed in the threaded hole (4b2) through internal threads, the cap portion of the self-locking bolt (4b3) abuts against the end face of the small belt pulley (3b), and the thread direction of the connecting portion (4b1) is opposite to that of the threaded hole (4b 2).
9. An exercise bicycle convenient for maintenance and comfortable for riding as claimed in claim 7, wherein the bearing seat (4c) comprises a bearing frame (4c1), an end cap (4c2) and a bearing (4c3), the bearing frame (4c1) is fixedly connected with the frame (1), the end cap (4c2) is fixedly connected with the bearing frame (4c1), the bearing frame (4c1) has a recess for the bearing (4c3) to be inserted into, the bearing frame (4c1) abuts against the outer circumference of the outer ring of the bearing (4c3) and one side thereof, the end cap (4c2) abuts against the other side of the outer ring of the bearing (4c3), and the second rotating shaft (4b) is fixedly connected with the inner ring of the bearing (4c 3).
10. An exercise bike easy to maintain and comfortable to ride according to claim 9, characterized in that the contact surface of the bearing frame (4c1) and the end cap (4c2) is triangular, and a through hole is provided at each corner of the contact part of the bearing frame (4c1) and the end cap (4c 2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020595756.6U CN212282694U (en) | 2020-04-20 | 2020-04-20 | Exercise bicycle convenient to maintain and comfortable to ride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020595756.6U CN212282694U (en) | 2020-04-20 | 2020-04-20 | Exercise bicycle convenient to maintain and comfortable to ride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212282694U true CN212282694U (en) | 2021-01-05 |
Family
ID=73973846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020595756.6U Active CN212282694U (en) | 2020-04-20 | 2020-04-20 | Exercise bicycle convenient to maintain and comfortable to ride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212282694U (en) |
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2020
- 2020-04-20 CN CN202020595756.6U patent/CN212282694U/en active Active
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