CN102755724B - Auxiliary frame structure capable of converting bicycles into fitness equipment - Google Patents

Auxiliary frame structure capable of converting bicycles into fitness equipment Download PDF

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Publication number
CN102755724B
CN102755724B CN201110219535.4A CN201110219535A CN102755724B CN 102755724 B CN102755724 B CN 102755724B CN 201110219535 A CN201110219535 A CN 201110219535A CN 102755724 B CN102755724 B CN 102755724B
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China
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group
auxiliary frame
roller
health
base
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Expired - Fee Related
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CN201110219535.4A
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Chinese (zh)
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CN102755724A (en
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万国辉
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Individual
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Individual
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Priority claimed from US13/095,929 external-priority patent/US8430797B2/en
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Publication of CN102755724A publication Critical patent/CN102755724A/en
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Publication of CN102755724B publication Critical patent/CN102755724B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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  • Handcart (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

Provided is an auxiliary frame structure capable of helping convert bicycles into a piece of fitness equipment, mainly comprising a front fixing structure, a rear adjusting set, a front roller set, a rear roller set, and a connecting set. With this auxiliary frame structure, the bicycles of various sizes and models can be converted into a piece of fitness equipment. Further more, the rear adjusting set, the front roller set, and the rear roller set can be used for changing and adjusting the body-building effect, thereby realizing multiple body-building effects. In addition, with the arrangement of a sensing system and the combination with the computer software and hardware system, the auxiliary frame structure can be equipped with the functions corresponding to the virtual games.

Description

Health-care bicycle auxiliary frame group structure
Technical field
The present invention relates to a kind of health-care bicycle auxiliary frame group structure, particularly a kind of auxiliary frame group that multiple fitness training is provided and has virtual game usefulness concurrently.
Background technology
Existing health-care bicycle auxiliary frame set constructor, as shown in Figure 1, mainly comprise side arm group 1 and after-frame group 2, top is respectively equipped with rocking carrier 3 and fixed mount 4, this fixed mount 4 is the wheel shafts that are used for fixing bicycle 5, in this side arm group 1 and after-frame group 2, be equipped with roller 6, and utilize a connected device 7 that the roller 6 of side arm group 1 and after-frame group 2 is linked, in the time stepping on bicycle 5 and make its trailing wheel rotate and drive the roller 6 of after-frame group 2 simultaneously, the roller 6 of the related drive side arm group 1 of this connected device 7 meeting rotates and the front-wheel of bicycle 5 is also rotated thereupon, rotate and reach the object of moving,
But, the roller 6 of this existing structure is to be fixedly arranged in side arm group 1 and after-frame group 2, for sporter be only all simulation to the impression of flat road surface, and cannot simulate rough road impression, and if to experience different conditions, the roller 6 of support body is replaced in the dismounting of must will requiring great effort, suitable inconvenience, moreover, the auxiliary frame group of this existing structure height that cannot adjustment rack body, also cannot make sporter have the impression of climb and fall road conditions, board design generally speaking imperfection;
Prior art
Side arm group 1 after-frame group 2
Rocking carrier 3 fixed mounts 4
Bicycle 5 rollers 6
Connected device 7
The present invention
Front fixed mount group 11 end bolster 111
Collateral branch's frame 112 tops 1121
Put the front adjusting lever 1131 of body 113
Perforated holes 1132 rear roller groups 14
Rear adjusting lever 1411 gim pegs 16
12 front vertical portions 121 are organized in rear adjustment
Rear vertical rod 122 first bracing frames 1211
Adjustment part 1,212 second bracing frames 1221
Adjusting lever 1222 cross bars 123
Bogie side frame 148 front wheel groups 13
Base 131,141 Mobile bases 132,142
Roller set 133,143 rocking carriers 134,144
Fixed mount 135,145 sliding components 1311
Fixing slotted eye 1312 holders 1313
Adjustment block 137,147 runs through portion 1321
The body of rod 136,146 is connected piece 1322
Pole 1371,1471 rollers 1331,1431
Upper shield 1332 bolts 1333
Extension rod 1314 holes 1315
Bearing member 1316 vertically runs through groove 1341
Profile groove 135 elastic parts 1352,1452
Profile groove 1351,1451 perforated holes 1412
Bicycle 16 connection groups 15
Outer tube 151 inner tubes 152
Pivot connector 153 axle center 1334,1434
Front-wheel 161 trailing wheels 162
Snib 1353,1453 emitters 17
Receiving system 18 is separated read apparatus 19
Summary of the invention
Object of the present invention is mainly to provide a kind of health-care bicycle auxiliary frame group structure, by this rear adjustment group, makes this auxiliary frame group reach the usefulness of height adjustment and makes bicycle can reach the body-building effect of fixed point simulation climb and fall motion.
To achieve these goals, the invention provides a kind of health-care bicycle auxiliary frame group structure, comprising:
One front fixed mount group, comprises end bolster and collateral branch's frame, and top is provided with storing body, and one end extension of this storing body is provided with front adjusting lever, runs through the perforated holes that is provided with side by side fixed range on front adjusting lever;
One rear adjustment group, comprises front vertical portion and rear vertical rod, extends and is provided with the first bracing frame, adjustment part, the second bracing frame and adjusting lever respectively, and be solid-located by the bogie side frame of cross bar and rear roller group bottom;
One front wheel group and a rear roller group, include a base, a Mobile base, a roller set, a rocking carrier and a fixed mount;
The top extension of base is provided with holder, and can set firmly thereon for adjustment block, and front end is extended with an extension rod, and the appropriate position of extension rod is provided with a hole;
Mobile base appropriate position is provided with the portion of running through, and by the body of rod, Mobile base is fixedly arranged on base, and the appropriate position of Mobile base convexes with a linking piece, and this linking piece laterally rank is provided with a pole;
Roller set comprises roller, upper shield and bolt;
Rocking carrier is connected with extension rod, and upper end is provided with vertically runs through groove;
Fixed mount one end is provided with profile groove, is provided with elastic parts in it, utilizes together with snib is hubbed on the front-wheel axle center of bicycle;
One connection group, comprises an outer tube, an inner tube and pivot connector, and this pivot connector is pivoted mutually with the axle center of roller.
Above-mentioned health-care bicycle auxiliary frame group structure, wherein, the base bottom of this front wheel group is pivoted with multiple sliding components, wherein, bulk or tablet that this sliding component forms for pulley or by the material of plastics, acrylic.
Above-mentioned health-care bicycle auxiliary frame group structure, wherein, the member kenel of this adjustment part and adjustment block is oil hydraulic cylinder, nut.
Above-mentioned health-care bicycle auxiliary frame group structure, wherein, the position that this rocking carrier one end and extension rod are articulated is also provided with Bearing member.
To achieve these goals, the present invention also provides a kind of health-care bicycle auxiliary frame group structure, comprising:
One front fixed mount group, comprises end bolster and collateral branch's frame, and top is provided with storing body, and one end extension of this storing body is provided with front adjusting lever, runs through the perforated holes that is provided with side by side fixed range on front adjusting lever;
One rear adjustment group, comprises front vertical portion and rear vertical rod, extends and is provided with the first bracing frame, adjustment part, the second bracing frame and adjusting lever respectively, and be solid-located by the bogie side frame of cross bar and rear roller group bottom;
One front wheel group and a rear roller group, include a base, a Mobile base, a roller set, a rocking carrier and a fixed mount;
The top extension of base is provided with holder, and can set firmly thereon for adjustment block, and front end is extended with an extension rod, and the appropriate position of extension rod is provided with a hole;
Mobile base appropriate position is provided with the portion of running through, and by the body of rod, Mobile base is fixedly arranged on base, and the appropriate position of Mobile base convexes with a linking piece, and this linking piece laterally rank is provided with a pole;
Roller set comprises roller, upper shield and bolt;
Rocking carrier is connected with extension rod, and upper end is provided with vertically runs through groove;
Fixed mount one end is provided with profile groove, is provided with elastic parts in it, utilizes together with snib is hubbed on the front-wheel axle center of bicycle;
One connection group, comprises an outer tube, an inner tube and pivot connector, and this pivot connector is pivoted mutually with the axle center of roller;
One emitter, has electric connection with each induction system of auxiliary frame group;
One receiving system, receives the signal being sent by emitter.
One separates read apparatus, converts image to and present after the signal that deciphering receiving system is accepted.
Above-mentioned health-care bicycle auxiliary frame group structure, wherein, the base bottom of this front wheel group is pivoted with multiple sliding components, wherein, bulk or tablet that this sliding component forms for pulley or by the material of plastics, acrylic.
Above-mentioned health-care bicycle auxiliary frame group structure, wherein, the member kenel of this adjustment part and adjustment block is oil hydraulic cylinder, nut.
Above-mentioned health-care bicycle auxiliary frame group structure, wherein, the position that this rocking carrier one end and extension rod are articulated is also provided with Bearing member.
Above-mentioned health-care bicycle auxiliary frame group structure, wherein, this receiving system is located in same computer hardware with separating read apparatus, or is two computer hardwares separately.
Health-care bicycle auxiliary frame group structure of the present invention, by the removable frame of front wheel group and rear roller group, makes this auxiliary frame group make bicycle have the body-building effect of the different road conditions of simulation because can arbitrarily converting roller surface sample state.
Health-care bicycle auxiliary frame group structure of the present invention, by setting up of induction system, makes this auxiliary frame group have the function that virtual game is corresponding.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Brief description of the drawings
Fig. 1 is the solid combination schematic diagram of existing spinning equipment;
Fig. 2 is perspective exploded view of the present invention;
Fig. 3 is three-dimensional combination schematic diagram of the present invention;
Fig. 4 is the solid combination schematic diagram that the present invention uses state;
Fig. 5 is that the present invention uses the side-looking of state to make cardon;
Fig. 6 is the three-dimensional combination of another preferred embodiment of the present invention schematic diagram.
Wherein, Reference numeral
Detailed description of the invention
Below in conjunction with accompanying drawing, structural principle of the present invention and operation principle are described in detail:
The present invention is about a kind of health-care bicycle auxiliary frame group structure, refer to Fig. 2, shown in Fig. 3 and Fig. 4, mainly include a front fixed mount group 11, this front fixed mount group has an end bolster 111, both sides are extended and are provided with collateral branch's frame 112, form by this stereoscopic frame type, 1121, the top in collateral branch's frame 112 of both sides is pivoted with a storing body 113, this storing body 113 is for being groove shape, and one end is extended with front adjusting lever 1131, on this front adjusting lever 1131, the perforated holes 1132 that is provided with side by side fixed range is run through in appropriate location, this front adjusting lever 1131 is can mutually overlap merga pass gim peg 16 with the rear adjusting lever of rear roller group 14 1411 to adjust fixing function,
One rear adjustment group 12, there is respectively front vertical portion 121, rear vertical rod 122, 121 extensions of front vertical portion are respectively equipped with the first bracing frame 1211 and adjustment part 1212, rear vertical rod 122 both sides extend in parallel and are provided with the second bracing frame 1221 and adjusting lever 1222, the top of the top of two second bracing frames 1221 and the first bracing frame 1211 is to be solid-located by a cross bar 123 and with the bogie side frame 148 of rear roller group 14 bottoms, and this adjustment part 1212 and adjusting lever 1222 are to be mutually linked in together, make accordingly this rear adjustment group 12 present the three-dimensional taper of a triangle, and utilize this adjusting lever 1222 in this adjustment part 1212, to stretch and adjust the feature of usefulness, relatedly carry out the angle adjustment between the first bracing frame 1211 and the second bracing frame 1221 and make rear roller group 14 there is the usefulness of height adjustment, and the member kenel of this adjustment part 1212 can be oil hydraulic cylinder, nut etc., also can be oil pressure with respect to adjustment part 1212 and the adjustment form of adjusting lever 1222 stretches or screws togather flexible,
One front wheel group 13, there is a base 131, a Mobile base 132, a roller set 133, a rocking carrier 134 and a fixed mount 135, the bottom of this base 131 is pivoted with multiple sliding components 1311, front and back end, top is provided with two groups of fixing slotted eyes 1312 relatively, appropriate position extension is provided with holder 1313, can set firmly thereon for adjustment block 137, wherein, bulk or tablet that this sliding component 1311 can be pulley or is made up of plastics, acrylic or the low material of other coefficient of friction;
Mobile base 132 is to be located at 1312 of the fixing slotted eyes in two groups, base 131 top, these Mobile base 132 rear and front ends are respectively equipped with the portion of running through 1321, sequentially run through holddown groove 1312 and run through after portion 1321 by the body of rod 136, this Mobile base 132 can be fixedly arranged on base 131, and can make this Mobile base 132 move left and right on this base 131;
Mobile base 132 appropriate positions, top longitudinally convex with a linking piece 1322, this linking piece 1322 is that laterally rank is provided with a pole 1371, this pole 1371 is to merge the adjustment of can stretching according to this with one end cover of adjustment block 137, the rank mode of closing with being connected piece 1322 of this pole 1371 can be activity, also can be and set firmly, and the member kenel of this adjustment block 137 can be oil hydraulic cylinder, also can be nut, also can be oil pressure with respect to adjustment block 137 and the adjustment form of pole 1371 and stretch or screw togather flexible;
Roller set 133 comprises roller 1331, ㄇ jacket lid 1332 and bolt 1333, roller 1331 both sides of this roller set 133 are to be equipped in ㄇ jacket lid 1332, and utilize bolt 1333 to screw togather ㄇ jacket lid 1332 and Mobile base 132, and roller 1331 is fixedly arranged on Mobile base 132 and can be rotated according to this, and generally point to have multiple sections, every section be the lines that is different thicknesses degree on the surface of this roller 1331;
The front end extension of base 131 is provided with a L-type extension rod 1314, and the appropriate position of extension rod 1314 is provided with a hole 1315, is provided with Bearing member 1316 and can places and set firmly for one end of rocking carrier 134 in it;
Rocking carrier 134 is to be Y word shape, and bottom utilizes Bearing member 1316 be placed through in the hole 1315 of extension rod 1314 and rotated, and its upper end is provided with vertically runs through groove 1341, and fixed mount 135 can be run through be arranged at this vertically to run through in groove 1341;
This fixed mount 135 is to be two shapes of falling L, and one end is provided with profile groove 1351, and this profile groove 1351 is interior and be provided with elastic parts 1352;
One rear roller group 14, the structure of this rear roller group 14 is identical with front wheel group 13, there is equally a base 141, one Mobile base 142, one roller set 143, one rocking carrier 144 and a fixed mount 145, utilize equally the setting of the body of rod 146 that Mobile base 142 can be moved left and right on base 141, utilize equally adjustment block 147 and the combination of pole 1471 to handle according to this movement of Mobile base 142, right and front wheel group 13 differences are to be, what the bottom of this front wheel group 13 was pivoted is is sliding component 1311, then the both sides, bottom of roller set 14 are to be provided with bogie side frame 148, rear adjustment group 12 and the bogie side frame 148 of rear roller group 14 can be solid-located by cross bar 123,
One end extension of this rear roller group 14 is provided with rear adjusting lever 1411, this rear adjusting lever 1411 is to be hollow form, can be nested with for the front adjusting lever 1131 of putting body 113, and on this rear adjusting lever 1411, the perforated holes 1412 that is provided with side by side fixed range is also run through in appropriate location, utilize the characteristic of the scalable adjustment of front adjusting lever 1131 and rear adjusting lever 1411, and penetrate the perforated holes 1132 of the front adjusting lever of blocking 1131 and rear adjusting lever 1411 by gim peg 16 simultaneously, 1412, can reach the front fixed mount group 11 of adjustment organizes the usefulness of 12 spacings with rear adjustment and can make the bicycle 16 of different size size be suitable for,
One connection group 15, to wear an inner tube 152 and be provided with pivot connector 153 in two ends in it by an outer tube 151 to be formed, this inner tube 152 is connected with the axle center 1334,1434 of the roller 1331,1431 of rear roller group 14 with front wheel group 13 respectively by pivot connector 153, in the time that the roller 1431 of rear roller group 14 rotates, rotate in the lump by the band in axle center 1434 group 15 the inner tube 152 that is dynamically connected;
When sporter wants indoor while utilizing bicycle 16 reach motion object or want self training bicycle simulated, only need general bicycle 16 to be positioned in the auxiliary frame group combining, then adjust front adjusting lever 1131 and rear adjusting lever 1411 and reach suitable distance, and utilize gim peg 16 to penetrate the perforated holes 1132 of the front adjusting lever 1131 of blocking and rear adjusting lever 1411 simultaneously, 1412 reach after fixing usefulness, make again the front-wheel 161 of bicycle 16 be put rocking carrier 134 respectively with trailing wheel 162, 144 and fixed mount 135, 145 inside, and utilize snib 1353, 1453 through fixed mount 135, 145 profile groove 1351, after the 1451 and front-wheel 161 of bicycle 16 and the axle center 1611 of trailing wheel 162, 1621 are fixed, and by elastic parts 1352, 1452 are equipped in snib 1353, 1453 below, with the front-wheel 161 and the roller 1331 of trailing wheel 162 with front wheel group 13 and rear roller group 14 of seasonal bicycle 16, 1431 contacts,
In the time that user will carry out operation that treadled cycle motion swings even, only need step on bicycle 16 and driving trailing wheel 162 while rotating, this trailing wheel 162 just can drive the roller 1431 in rear roller group 14 and then to rotate, the roller 1431 of this rear roller group 14 also moving inner tube 152 of being with the group 15 that is dynamically connected and then rotates, the related roller 1331 that makes front wheel group 13 also and then rotates and impels the front-wheel 161 of bicycle 16 also to rotate thereupon, due to rocking carrier 134, 144 have the function that can swing, and what the base 131 of front wheel group 13 was pivoted is is sliding component 1311, in trampling driving, also can make bicycle 16 there is the Random effects of left-right rotation and swing,
In the actual state that drives bicycle, always run into different road conditions, the present invention is because roller 1331,1431 surfaces of front wheel group 13 and rear roller group 14 have the lines of different thicknesses, and those roller set 133,143 all can move left and right by Mobile base 132,142 on base 131,141, therefore can replace very simply different rollers 1331,1431, to reach the simulation usefulness of different road conditions;
In addition, in the actual state that drives bicycle, always run into the road conditions of upward slope and descending, the present invention can utilize the rear adjustment group 12 can be by the flexible function that makes to have between the first bracing frame 1211 and the second bracing frame 1221 angle adjustment that reaches of adjusting lever 1222, and make rearmounted roller driving group 14 thereon can present the usefulness that height is adjusted up and down, and then reach the situation that analog bicycle 16 climb and falls move, as shown in Fig. 5.
Shown in Fig. 6, for another preferred embodiment of the present invention represents, mainly that framework is on original structure of the present invention, but putting body 113, roller 1331, 1431, the appropriate position of rear adjustment group 12 and rocking carrier 134 is respectively arranged with induction system (not indicating in figure), use the direction of responding to respectively bicycle, the speed of a motor vehicle and climb and fall message, and make the message connection of those induction systems converge whole to an emitter 17, by this emitter 17, message can be received by a receiving system 18, and make this receiving system 18 those messages can be connected to solution read apparatus 19, utilize the software of separating in read apparatus, just can convert those messages to image represents, so just can reach the usefulness of entity and virtual interactive model, wherein, this deciphering main frame 19 can be the single body with screen, also can be multiple machines that one has screen.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.

Claims (11)

1. a health-care bicycle auxiliary frame group structure, is characterized in that, comprising:
One front fixed mount group, comprises end bolster and collateral branch's frame, and top is provided with storing body, and one end extension of this storing body is provided with front adjusting lever, runs through the perforated holes that is provided with side by side fixed range on front adjusting lever;
One rear adjustment group, comprises front vertical portion and rear vertical rod, and this front vertical portion extends and is provided with the first bracing frame, adjustment part, and this rear vertical rod is extended and is provided with the second bracing frame and adjusting lever, and front vertical portion and rear vertical rod are solid-located by the bogie side frame of cross bar and rear roller group bottom;
One front wheel group and a rear roller group, include a base, a Mobile base, a roller set, a rocking carrier and a fixed mount;
The top extension of base is provided with holder, and can set firmly thereon for adjustment block, and front end is extended with an extension rod, and the appropriate position of extension rod is provided with a hole;
Mobile base appropriate position is provided with the portion of running through, and by the body of rod, Mobile base is fixedly arranged on base, and the appropriate position of Mobile base convexes with a linking piece, and this linking piece laterally rank is provided with a pole;
Roller set comprises roller, upper shield and bolt;
Rocking carrier is connected with extension rod, and upper end is provided with vertically runs through groove;
Fixed mount one end is provided with profile groove, is provided with elastic parts in it, utilizes together with snib is hubbed on the front-wheel axle center of bicycle;
One connection group, comprises an outer tube, an inner tube and pivot connector, and this pivot connector is pivoted mutually with the axle center of roller.
2. health-care bicycle auxiliary frame group structure according to claim 1, is characterized in that, the base bottom of this front wheel group is pivoted with multiple sliding components, wherein, and the bulk that this sliding component forms for pulley or by plastic material or tablet.
3. health-care bicycle auxiliary frame group structure according to claim 2, is characterized in that, this plastic material is acrylic.
4. health-care bicycle auxiliary frame group structure according to claim 1, is characterized in that, the member kenel of this adjustment part and adjustment block is oil hydraulic cylinder, nut.
5. health-care bicycle auxiliary frame group structure according to claim 1, is characterized in that, the position that this rocking carrier one end and extension rod are articulated is also provided with Bearing member.
6. a health-care bicycle auxiliary frame group structure, is characterized in that, comprising:
One front fixed mount group, comprises end bolster and collateral branch's frame, and top is provided with storing body, and one end extension of this storing body is provided with front adjusting lever, runs through the perforated holes that is provided with side by side fixed range on front adjusting lever;
One rear adjustment group, comprises front vertical portion and rear vertical rod, and this front vertical portion extends and is provided with the first bracing frame, adjustment part, this rear vertical rod the second bracing frame and adjusting lever, and front vertical portion and rear vertical rod are solid-located by the bogie side frame of cross bar and rear roller group bottom;
One front wheel group and a rear roller group, include a base, a Mobile base, a roller set, a rocking carrier and a fixed mount;
The top extension of base is provided with holder, and can set firmly thereon for adjustment block, and front end is extended with an extension rod, and the appropriate position of extension rod is provided with a hole;
Mobile base appropriate position is provided with the portion of running through, and by the body of rod, Mobile base is fixedly arranged on base, and the appropriate position of Mobile base convexes with a linking piece, and this linking piece laterally rank is provided with a pole;
Roller set comprises roller, upper shield and bolt;
Rocking carrier is connected with extension rod, and upper end is provided with vertically runs through groove;
Fixed mount one end is provided with profile groove, is provided with elastic parts in it, utilizes together with snib is hubbed on the front-wheel axle center of bicycle;
One connection group, comprises an outer tube, an inner tube and pivot connector, and this pivot connector is pivoted mutually with the axle center of roller;
One emitter, has electric connection with each induction system of auxiliary frame group;
One receiving system, receives the signal being sent by emitter;
One separates read apparatus, converts image to and present after the signal that deciphering receiving system is accepted.
7. health-care bicycle auxiliary frame group structure according to claim 6, is characterized in that, the base bottom of this front wheel group is pivoted with multiple sliding components, wherein, and the bulk that this sliding component forms for pulley or by plastic material or tablet.
8. health-care bicycle auxiliary frame group structure according to claim 7, is characterized in that, this plastic material is acrylic.
9. health-care bicycle auxiliary frame group structure according to claim 6, is characterized in that, the member kenel of this adjustment part and adjustment block is oil hydraulic cylinder, nut.
10. health-care bicycle auxiliary frame group structure according to claim 6, is characterized in that, the position that this rocking carrier one end and extension rod are articulated is also provided with Bearing member.
11. health-care bicycle auxiliary frame group structures according to claim 6, is characterized in that, this receiving system is located in same hardware device with separating read apparatus, or are two hardware devices separately.
CN201110219535.4A 2011-04-28 2011-07-28 Auxiliary frame structure capable of converting bicycles into fitness equipment Expired - Fee Related CN102755724B (en)

Applications Claiming Priority (2)

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US13/095,929 US8430797B2 (en) 2010-05-24 2011-04-28 Support for supporting a bicycle used as an exerciser
US13/095,929 2011-04-28

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CN102755724B true CN102755724B (en) 2014-10-15

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CN105727506A (en) * 2016-04-29 2016-07-06 徐峰 Gear hobbing type bicycle-riding intelligent simulation system suitable for children
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