CN200998555Y - Adjustable crank - Google Patents
Adjustable crank Download PDFInfo
- Publication number
- CN200998555Y CN200998555Y CNU2007200667082U CN200720066708U CN200998555Y CN 200998555 Y CN200998555 Y CN 200998555Y CN U2007200667082 U CNU2007200667082 U CN U2007200667082U CN 200720066708 U CN200720066708 U CN 200720066708U CN 200998555 Y CN200998555 Y CN 200998555Y
- Authority
- CN
- China
- Prior art keywords
- crank
- core
- adjustable
- limited post
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an adjustable crank, which comprises a crank core which is connected with a main shaft of a running machine through a top hole arranged at the head part and on which a limit post which can be extended into the crank core is penetrated through a spring, a crank sleeve ensuring that the crank core is sleeved in the crank sleeve and on which a crank pin hole and more limit column holes are arranged, and a crank pin penetrated into the crank pin hole to be connected with the crank sleeve and the rocking arm of the running machine. The exercise intensity on the running machine can be adjusted through regulating the radius of the crank.
Description
Technical field
The utility model relates to the device on a kind of body-building apparatus, particularly a kind of adjustable crank.
Background technology
The crank 1 of existing oval treadmill as shown in Figure 1 is unadjustable, can only move on fixing movement locus, also just can not regulate exercise intensity.
Summary of the invention
The purpose of this utility model provides a kind of adjustable crank that can regulate the exercise intensity of its place treadmill by the length of regulating throw of crankshaft.
The purpose of this utility model is achieved through the following technical solutions:
A kind of adjustable crank, it comprises:
One crank core, it is connected with the main shaft of treadmill by the hole that head is provided with, and penetrates the limited post that is provided with by this crank core of the scalable discrepancy of spring on it;
The one crank cover that this crank core retainer plate is located therein, it is provided with a crank pin hole and more than one limited post hole;
One is arranged in this crank pin hole the crank-pin with the swing arm that connects this crank cover and treadmill.
Wherein, the sidewall of this crank core is provided with a slide rail, puts at this crank and correspondingly be provided with a fixture block that can slide in this slide rail.
Wherein, the outside in this limited post hole is respectively arranged with a film key.
Wherein, the bottom of this crank cover is provided with a crank end cap.
Wherein, the sidewall of this crank core is provided with one or more rubber blanket.
Positive progressive effect of the present utility model is:
It can regulate the exercise intensity of its place treadmill by the length of regulating throw of crankshaft.
Description of drawings
Fig. 1 is the structural representation of existing oval treadmill.
Fig. 2 is the schematic diagram of the utility model preferred embodiment under user mode.
Fig. 3 is the decomposition texture schematic diagram of the utility model preferred embodiment.
Fig. 4 is the structural representation of the utility model preferred embodiment.
The specific embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.
Wherein the major part of this crank core 21 is arranged in this crank cover 22, and its head is provided with a square hole 216, and it is connected with the main shaft 3 of oval treadmill.Be sheathed on the inner sidewall of this crank cover at this crank core 21, also penetrate and be provided with a limited post 212, it is fixed on this crank core 21 by a pad 214, and between this limited post 212 and this pad 214, also be provided with a spring 213, make this limited post 212 can when receiving pressure, be contracted to the inside of this crank core 21.Also be provided with several rubber blankets 215 on the sidewall of this crank core 21,, make that crank cover 22 and 21 in crank core are very close to each other by means of the elastic reaction of rubber blanket 215.With the perpendicular ratio of the above-mentioned sidewall of this crank core 21 on also be provided with a slide rail 211.
The lower end of this crank cover 22 is provided with a crank pin hole 222 and inserts for this crank-pin 23, and this crank-pin 23 is connected with the swing arm of elliptical exercise machine.The bottom of this crank cover 22 also is provided with crank end cap 24.This crank cover 22 is provided with three limited post holes 223 with the corresponding sidewall of this spacing hole place sidewall, corresponding with this limited post 212 of its shape and size, but ammunition feed spring 213 therefrom passes when nature, and this crank core 21 is fastened in the crank cover 22, thereby change the length of this crank 2.The outside in this limited post hole 223 also is coated with a film key 221 respectively.Be provided with a fixture block 224 with the sidewall of the corresponding crank cover 22 of slide rail 211 place sidewalls, its shape is corresponding with slide rail 221.
Can make limited post 212 compress springs 213 during use to exerting pressure on this film case 221, thereby in withdrawal crank core 22 covers, crank core 21 can overlap in 22 at crank by relatively moving of slide rail 211 and fixture block 224 and slide, and then make limited post 212 can be fastened in the different limited post holes 223, thereby change the length of crank 2, change the intensity of motion.
Claims (5)
1, a kind of adjustable crank is characterized by, and it comprises:
One crank core, it is connected with the main shaft of treadmill by the hole that its head is provided with, and penetrates the limited post that is provided with by this crank core of the scalable discrepancy of spring on it;
The one crank cover that this crank core retainer plate is located therein, it is provided with a crank pin hole and more than one limited post hole;
One is arranged in this crank pin hole the crank-pin with the swing arm that connects this crank cover and treadmill.
2, adjustable crank according to claim 2 is characterized by, and the sidewall of this crank core is provided with a slide rail, puts at this crank and correspondingly be provided with a fixture block that can slide in this slide rail.
3, adjustable crank according to claim 1 and 2 is characterized by, and the outside in this limited post hole is respectively arranged with a film key.
4, adjustable crank according to claim 1 and 2 is characterized by, and the bottom of this crank cover is provided with a crank end cap.
5, adjustable crank according to claim 1 and 2 is characterized by, and the sidewall of this crank core is provided with one or more rubber blanket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200667082U CN200998555Y (en) | 2007-01-26 | 2007-01-26 | Adjustable crank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200667082U CN200998555Y (en) | 2007-01-26 | 2007-01-26 | Adjustable crank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200998555Y true CN200998555Y (en) | 2008-01-02 |
Family
ID=39012962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200667082U Expired - Fee Related CN200998555Y (en) | 2007-01-26 | 2007-01-26 | Adjustable crank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200998555Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113318408A (en) * | 2021-05-08 | 2021-08-31 | 武汉城市职业学院 | Dash swing arm trainer |
-
2007
- 2007-01-26 CN CNU2007200667082U patent/CN200998555Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113318408A (en) * | 2021-05-08 | 2021-08-31 | 武汉城市职业学院 | Dash swing arm trainer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080102 Termination date: 20130126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |