CN101507871A - Constant-force chest developer - Google Patents
Constant-force chest developer Download PDFInfo
- Publication number
- CN101507871A CN101507871A CNA2009100612789A CN200910061278A CN101507871A CN 101507871 A CN101507871 A CN 101507871A CN A2009100612789 A CNA2009100612789 A CN A2009100612789A CN 200910061278 A CN200910061278 A CN 200910061278A CN 101507871 A CN101507871 A CN 101507871A
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- spring
- screw
- constant
- twisted rope
- rope
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Abstract
The invention provides a constant force spring exerciser. The constant force spring exerciser has the advantages of no counterweight, simple structure and light weight, and can provide constant pulling force, and the magnitude of the pulling force can be adjusted. The constant force spring exerciser mainly comprises a machine frame, a spring, a twisted rope mechanism and an adjustment mechanism, wherein two end shaft supporting positions of a rope winding shaft of the twisted rope mechanism are arranged in bearing arrangement holes on a left supporting plate and a right supporting plate of the machine frame; a connecting rope of the twisted rope mechanism is fixed on a connecting hook at the upper end of the spring, while the lower end of the spring is inserted and fixed in a positioning hole of a lower connecting plate of the frame; a supporting block of the adjustment mechanism is screwed in the spring, a screw rod of the adjustment mechanism is screwed in a screw hole of the lower connecting plate of the frame, and the adjustment mechanism moves up and down by rotating the screw rod; the upper part of the screw rod is fixedly arranged in a middle hole of the supporting block; the twisted rope mechanism comprises a tower-shaped twisted rope disc, a pulling force rope, the connecting rope and a rope winding shaft; and the adjustment mechanism comprises the supporting block, the screw rod and a hand wheel.
Description
Technical field
The present invention relates to the body building field chest expander and be used for dynamic balance etc. the power puller system, especially relate to a kind of constant-force chest developer.
Background technology
In daily life and work, often needing to provide the equipment of constant pulling force, as be used for the relative constant force of pulling force needs of balance lifting object weight, and the chest expander that is used for body-building is if constant force, then more can make people produce the interest of using chest expander, reach the purpose of better motion exercise.
The patent No. is that the household multifunction body-building device of CN 95222875.0 includes: frame part, seat part, pulley and on formations such as rope part, weight device part, be characterized on the main body frame of forming by cross tube, sheer pole, support bar, being equipped with a high-order chest expander, low level chest expander, chest expanding arm assembly, horizontal sliding arm movement device, leg extensions arm movement device etc., be provided with a guiding mechanism that can carry out lifting on the seat.The advantage of this utility model is: reasonable in design, novelty, and simple to operate, function of use is complete, and volume is little, and is safe and reliable, but the height of regulated at will seat, short, resistance large and small.
The patent No. is the improvement that 03130614.4 Spring balancer can be realized guaranteeing of working space etc. and operating environment, is applicable to have air tool the hanging that the torque measuring ability is installed.Have: the hose member that constitutes by first flexible pipe and second flexible pipe; The rotating drum of this hose member is used to reel; By the bolster that has first air flue and second air flue in inside with can be rotated to support on this bolster and supporting member that constitute with the rotary connector cylindraceous that this rotating drum is rotated; The torque of above-mentioned hose member of will being used to reel gives the torque of above-mentioned commentaries on classics reel and gives member, above-mentioned rotary connector has peristome (tube connector), this peristome can connect above-mentioned first flexible pipe and above-mentioned first air flue and, can connect above-mentioned second flexible pipe and above-mentioned second air flue.
The patent No. is the inversely winding type constant-force spring mechanism of 200720070497.X, comprises follower, furls wheel and output wheel, and constant force spring one end volume is enclosed within follower, and the constant force spring other end is fixed and warp is furling on the wheel; Output wheel with furl wheel and fixedly connected, and be coaxial.Constant force spring back-roll is being furled on the wheel, making the rectilinear motion of constant force spring, becoming and rotatablely move.Constant force spring is rewound relatively large furling on the wheel of diameter, when impulse stroke was longer, it is constant that moment of torsion that constant force spring produces in rotary course keeps, and then the moment of torsion that constant force spring is produced, change into pulling force, such pulling force that produces also keeps constant.
The patent No. is that the pulling force of the household multifunction body-building device of CN95222875.0 is regulated and need be finished by adding or reduce balancing weight, and weight of equipment is big, and uses inconvenient.
The patent No. can provide constant pulling force to hang as air tool for the Spring balancer of CN03130614.4, but needs source of the gas in the course of work.
The patent No. can provide constant pulling force for the inversely winding type constant-force spring mechanism of CN200720070497.X, but its pulling force is big or small unadjustable.
Summary of the invention
The purpose of this invention is to provide a kind of no counterweight, simple in structure, lightweight constant-force chest developer, this constant-force chest developer can provide constant pulling force, and the adjustable size of pulling force joint.
In order to achieve the above object, constant-force chest developer of the present invention is characterized in that: comprise frame, spring, twisted rope mechanism and governor motion;
The wiring axle bearings at both ends support level of twisted rope mechanism is installed in the left gripper shoe and the bearing mounting hole on the right gripper shoe of frame by bearing, the connection cord of twisted rope mechanism is fixed on the binding hook of spring upper end, fixing in the locating hole of the lower end insertion frame lower connecting plate of spring, the tray of governor motion screws in the spring, move up and down by rotary screw in the screw of the screw mandrel screw-in frame lower connecting plate of governor motion, screw mandrel top is fixedly mounted in the tray interstitial hole.
Described twisted rope mechanism is characterized in that: comprise tower shape twisted rope dish, pulling force rope, connection cord and wiring axle; Wiring axle two ends are the bearings position, tower shape twisted rope dish is the screw that an end is big, an end is little, footpath, the end size of tower shape twisted rope valve snail line is directly proportional with its corner, pulling force rope is in tower shape twisted rope valve snail line, tower shape twisted rope dish is fixedly mounted on the wiring axle, and connection cord one end is fixed on the wiring axle and on the wiring axle.
Described governor motion is characterized in that: comprise tray, screw mandrel and handwheel; Tray is the external spiral trapezoidal thread, middle porose, the pitch of external spiral trapezoidal thread equates with pitch under the spring free state, the footpath is less than the internal diameter of spring at the bottom of the trapezoidal thread, the trapezoidal thread external diameter is greater than mean diameter of coil, and the thickness of trapezoidal thread bossing is less than the distance between two adjacent steel wires under the spring free state, and the pitch of screw mandrel equates with pitch under the spring free state, screw mandrel top is fixedly mounted in the tray interstitial hole, and the screw mandrel bottom is equipped with handwheel.
Described spring is an elastic spring, and the one end has the binding hook, and the other end is converted into spring steel wire vertical with axle of spring, leaves enough big gap between its spring two adjacent steel wires, in order to tray to be installed.
Described frame mainly is made up of upper junction plate, lower connecting plate, left gripper shoe and right gripper shoe; On left side gripper shoe and the right gripper shoe bearing mounting hole is arranged, have the cooperation screw and the location hole of the spring that pass through hole, screw mandrel of pulling force rope on the lower connecting plate, the pitch of the cooperation screw of screw mandrel equates that with pitch under the spring free state upper junction plate, lower connecting plate, left gripper shoe and right gripper shoe are screwed into rectangle integral body.
Because the pitch of tray and screw mandrel equates that with the pitch under the spring free state so under the spring free state, rotate handwheel and just can drive the screw mandrel rotation, the screw mandrel rotation drives the tray rotation, the tray rotation will make its be in spring shaft to diverse location.
Tray spring shaft to the position difference, just make the active spring coils difference, so just changed the stiffness factor of spring, promptly tray spring shaft to the position difference obtain the different stiffness factors of spring.
If the stiffness factor of spring is K
1, during work, the deflection of spring is y, the wiring axle diameter of axle that turns around the connection cord place is d, then the pulling force f=K of spring
1Y, the angle that the wiring axle turned over when the deflection of spring was y is a=y/d/2, because the core diameter of thread D of tower shape twisted rope dish size is directly proportional with its corner, establishing its proportionality coefficient is K
2, D=K is promptly arranged
2A=K
2Y/d/2, the pulling force of establishing pulling force rope is F, then has according to equilibrium of forces: K
1Yd/2=FK
2Y/d/2/2 promptly obtains F=2K
1d
2/ k
2
From relational expression F=2K
1d
2/ k
2Draw: the pulling force of pulling force rope is that F the stiffness factor with spring is K
1, turn around the wiring axle diameter of axle d and the proportionality coefficient K at connection cord place
2Relevant, and after equipment making is finished, the diameter of axle d of wiring axle and proportionality coefficient K
2Be changeless, the position one of tray in the spring regularly stiffness factor of spring is K
1Also be constant, so in the strain process of spring, the tensile force f of pulling force rope is invariable.
From relational expression F=2K
1d
2/ k
2In as can be seen, expect the constant force that numerical value is different, can by adjusting handle make tray spring shaft to the position difference, obtain the different stiffness factor K of spring
1Thereby, obtain the constant force of different numerical value.Tray when the upper end of spring, the stiffness factor K of spring
1Can obtain big constant force greatly; Tray when the lower end of spring, the stiffness factor K of spring
1Little, can obtain little constant force.
Constant-force chest developer of the present invention can provide constant pulling force, and pulling force is adjustable, no counterweight, and in light weight, simple in structure, production and processing is easy, and is with low cost.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention
Fig. 2 is the sectional structure schematic diagram of tray 4.1 off working state when moving to spring 3 lower ends
Fig. 3 is tray 4.1 structural representation under the duty when moving to spring 3 lower ends
Fig. 4 is tray 4.1 structural representation under the duty when moving in the middle of the spring 3
Fig. 5 is the structural representation of tray 4.1
Fig. 1 description of symbols: frame 1, twisted rope mechanism 2, spring 3, governor motion 4.
Fig. 2 description of symbols: left gripper shoe 1.1, right gripper shoe 1.2, upper junction plate 1.3, lower connecting plate 1.4, screw 1.5, tower shape twisted rope dish 2.1, pulling force rope 2.2, wiring axle 2.3, connection cord 2.4, tray 4.1, screw mandrel 4.2, handwheel 4.3, bearing 5.
The specific embodiment
Referring to Fig. 1, constant-force chest developer of the present invention mainly comprises frame 1, spring 3, twisted rope mechanism 2 and governor motion 4.
Referring to Fig. 2, the wiring axle 2.3 bearings at both ends support levels of twisted rope mechanism 2 are installed in the left gripper shoe 1.1 and the bearing mounting hole on the right gripper shoe 1.2 of frame 1 by bearing 5, the connection cord 2.4 of twisted rope mechanism 2 is fixed on the binding hook of spring 3 upper ends, fixing in the locating hole of lower end insertion frame 1 lower connecting plate 1.4 of spring 3, the tray 4.1 of governor motion 4 screws in the spring 3, move up and down by rotary screw in the screw of screw mandrel 4.2 screw-in frames 1 lower connecting plate 1.4 of governor motion 4, screw mandrel 4.2 tops are fixedly mounted in tray 4.1 interstitial holes.
Because the pitch of tray 4.1 and screw mandrel 4.2 equates with the pitch under spring 3 free states, so under spring 3 free states, rotate handwheel 4.3 and just can drive screw mandrel 4.2 rotations, screw mandrel 4.2 rotations drive trays 4.1 and rotate, and tray 4.1 rotates and will make it be in the axial diverse location of spring 3.
Tray 4.1 just makes spring 3 number of effective coils differences in the axial position difference of spring 3, has so just changed the stiffness factor of spring 3, and promptly tray 4.1 obtains the different stiffness factors of spring 3 in spring 3 axial position differences.
If the stiffness factor of spring 3 is K
1, during work, the deflection of spring 3 is y, wiring axle 2.3 diameters of axle that turn around connection cord 2.4 places are d, then the pulling force f=K of spring 3
1Y, the angle that wiring axle 2.3 turned over when the deflection of spring 3 was y is a=y/d/2, because the core diameter of thread D of tower shape twisted rope dish 2.1 size is directly proportional with its corner, establishing its proportionality coefficient is K
2, D=K is promptly arranged
2A=K
2Y/d/2, the pulling force of establishing pulling force rope 2.2 is F, then has according to equilibrium of forces: K
1Yd/2=FK
2Y/d/2/2 promptly obtains F=2K
1d
2/ k
2
From relational expression F=2K
1d
2/ k
2Draw: the tensile force f of pulling force rope 2.2 is K with the stiffness factor of spring 3 only
1, turn around wiring axle 2.3 diameter of axle d and the proportionality coefficient K at connection cord 2.4 places
2Relevant, and after equipment making is finished, the diameter of axle d of wiring axle 2.3 and proportionality coefficient K
2Be changeless, the position one of tray 4.1 in the spring 3 regularly stiffness factor of spring 3 is K
1Also be constant, so in the strain process of spring 3, the tensile force f of pulling force rope 2.2 is invariable.
From relational expression F=2K
1d
2/ k
2In as can be seen, expect the constant force that numerical value is different, can make tray 4.1 in the axial position difference of spring 3 by adjusting handle 4.3, obtain the different stiffness factor K of spring 3
1Thereby, obtain the constant force of different numerical value.As shown in Figure 4, tray 4.1 when the upper end of spring 3, the stiffness factor K of spring 3
1Can obtain big constant force greatly; As shown in Figure 3, tray 4.1 when the lower end of spring 3, the stiffness factor K of spring 3
1Little, can obtain little constant force.
Constant-force chest developer of the present invention can provide constant pulling force, and pulling force is adjustable, no counterweight, and in light weight, simple in structure, production and processing is easy, and is with low cost, and pulling force easy to adjust can be used as the balancing device of constant force chest expander, lifting object or instrument etc.
Claims (5)
1, constant-force chest developer is characterized in that: comprise frame (1), spring (3), twisted rope mechanism (2) and governor motion (4); Wiring axle (2.3) the bearings at both ends support level of twisted rope mechanism (2) is installed in the left gripper shoe (1.1) and the bearing mounting hole on the right gripper shoe (1.2) of frame (1) by bearing (5), the connection cord (2.4) of twisted rope mechanism (2) is fixed on the binding hook of spring (3) upper end, fixing in the locating hole of lower end insertion frame (1) lower connecting plate (1.4) of spring (3), the tray (4.1) of governor motion (4) screws in the spring (3), move up and down by rotary screw in the screw of screw mandrel (4.2) screw-in frame (1) lower connecting plate (1.4) of governor motion (4), screw mandrel (4.2) top is fixedly mounted in tray (4.1) interstitial hole.
2, constant-force chest developer according to claim 1 is characterized in that: described twisted rope mechanism (2) comprises tower shape twisted rope dish (2.1), pulling force rope (2.2), connection cord (2.4) and wiring axle (2.3); Described wiring axle two ends are the bearings position, tower shape twisted rope dish is the screw that an end is big, an end is little, footpath, the end size of tower shape twisted rope valve snail line is directly proportional with its corner, pulling force rope (2.2) is in tower shape twisted rope dish (2.1) screw thread, tower shape twisted rope dish (2.1) is fixedly mounted on the wiring axle (2.3), and connection cord (2.4) one ends are fixed on the wiring axle and on wiring axle (2.3).
3, constant-force chest developer according to claim 1 is characterized in that: described governor motion (4) comprises tray (4.1), screw mandrel (4.2) and handwheel (4.3); Described tray (4.1) is the external spiral trapezoidal thread, middle porose, the pitch of external spiral trapezoidal thread equates with pitch under spring (3) free state, the footpath is less than the internal diameter of spring (3) at the bottom of the trapezoidal thread, the trapezoidal thread external diameter is greater than footpath in the spring (3), the thickness of trapezoidal thread bossing is less than the distance between two adjacent steel wires under spring (3) free state, the pitch of screw mandrel (4.2) equates with pitch under spring (3) free state, screw mandrel (4.2) top is fixedly mounted in tray (4.1) interstitial hole, and screw mandrel (4.2) bottom is equipped with handwheel (4.3).
4, constant-force chest developer according to claim 1, it is characterized in that: described spring (3) is an elastic spring, and the one end has the binding hook, and it is vertical with axle of spring that other end spring steel wire is converted into, leave enough big gap between its spring (3) two adjacent steel wires, in order to tray (4.1) to be installed.
5, constant-force chest developer according to claim 1 is characterized in that: described frame (1) mainly is made up of upper junction plate (1.3), lower connecting plate (1.4), left gripper shoe (1.1) and right gripper shoe (1.2); On described left gripper shoe and the right gripper shoe bearing mounting hole is arranged, have the cooperation screw that passes through hole, screw mandrel (4.2) and spring (3) locating hole of pulling force rope (2.2) on the lower connecting plate, the pitch of the cooperation screw of described screw mandrel equates that with pitch under the spring free state described upper junction plate, lower connecting plate, left gripper shoe and right gripper shoe are fixed into rectangle integral body with screw (1.5).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2009100612789A CN101507871B (en) | 2009-03-27 | 2009-03-27 | Constant-force chest developer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009100612789A CN101507871B (en) | 2009-03-27 | 2009-03-27 | Constant-force chest developer |
Publications (2)
Publication Number | Publication Date |
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CN101507871A true CN101507871A (en) | 2009-08-19 |
CN101507871B CN101507871B (en) | 2010-06-09 |
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ID=41000505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2009100612789A Expired - Fee Related CN101507871B (en) | 2009-03-27 | 2009-03-27 | Constant-force chest developer |
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CN (1) | CN101507871B (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101927071A (en) * | 2010-07-20 | 2010-12-29 | 中国石油大学(北京) | Combined grip and pull fitness equipment with constant grip and pull |
CN103751954A (en) * | 2014-01-24 | 2014-04-30 | 陈佳嘉 | Fitness equipment spring counterweight balancer |
WO2015109926A1 (en) * | 2014-01-24 | 2015-07-30 | 陈佳嘉 | Spring weight balancer for exercise apparatus |
CN107228166A (en) * | 2016-03-25 | 2017-10-03 | 张仲甫 | The adaptive damping mechanism of body-building apparatus |
TWI606856B (en) * | 2016-03-25 | 2017-12-01 | Chung Fu Chang | Exercise machine having a changeable damping mechanism |
CN107477260A (en) * | 2017-09-21 | 2017-12-15 | 江苏大力城电气有限公司 | A kind of symmetrical expression spring constant force suspension and support |
CN109373125A (en) * | 2018-11-16 | 2019-02-22 | 潍坊歌尔电子有限公司 | The helmet system of helmet console and the application bracket |
CN112794226A (en) * | 2021-03-22 | 2021-05-14 | 常州市武进武南管道设备有限公司 | Large displacement pulley constant force hanger |
CN114307043A (en) * | 2022-01-14 | 2022-04-12 | 吉林体育学院 | Integrated training instrument for physical training and operation method |
CN115520742A (en) * | 2022-10-27 | 2022-12-27 | 中国城市建设研究院有限公司 | Constant force device, connecting equipment and building |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103723648B (en) * | 2014-01-15 | 2016-03-09 | 中国地质大学(武汉) | A kind of adjustable constant force output device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US132631A (en) * | 1872-10-29 | Improvement in sash-balances | ||
US5054162A (en) * | 1990-08-17 | 1991-10-08 | Schlegel Corporation | Constant force compensation for power spring weight balance |
US6958032B1 (en) * | 2002-09-26 | 2005-10-25 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Resistive exercise device |
CN1323811C (en) * | 2003-04-29 | 2007-07-04 | 远藤工业株式会社 | Spring balancer |
CN201031100Y (en) * | 2007-05-31 | 2008-03-05 | 上海协力卷簧制造有限公司 | Inverse coiling type constant-force spring mechanism |
-
2009
- 2009-03-27 CN CN2009100612789A patent/CN101507871B/en not_active Expired - Fee Related
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101927071A (en) * | 2010-07-20 | 2010-12-29 | 中国石油大学(北京) | Combined grip and pull fitness equipment with constant grip and pull |
CN101927071B (en) * | 2010-07-20 | 2011-11-23 | 中国石油大学(北京) | Combined grip and pull fitness equipment with constant grip and pull |
CN103751954A (en) * | 2014-01-24 | 2014-04-30 | 陈佳嘉 | Fitness equipment spring counterweight balancer |
WO2015109926A1 (en) * | 2014-01-24 | 2015-07-30 | 陈佳嘉 | Spring weight balancer for exercise apparatus |
CN103751954B (en) * | 2014-01-24 | 2015-10-28 | 陈佳嘉 | Health and fitness facilities spring balance balancer |
US9561394B2 (en) | 2014-01-24 | 2017-02-07 | Jiajia Chen | Fitness equipment spring counterweights balancer |
CN107228166A (en) * | 2016-03-25 | 2017-10-03 | 张仲甫 | The adaptive damping mechanism of body-building apparatus |
TWI606856B (en) * | 2016-03-25 | 2017-12-01 | Chung Fu Chang | Exercise machine having a changeable damping mechanism |
CN107477260A (en) * | 2017-09-21 | 2017-12-15 | 江苏大力城电气有限公司 | A kind of symmetrical expression spring constant force suspension and support |
CN109373125A (en) * | 2018-11-16 | 2019-02-22 | 潍坊歌尔电子有限公司 | The helmet system of helmet console and the application bracket |
CN112794226A (en) * | 2021-03-22 | 2021-05-14 | 常州市武进武南管道设备有限公司 | Large displacement pulley constant force hanger |
CN114307043A (en) * | 2022-01-14 | 2022-04-12 | 吉林体育学院 | Integrated training instrument for physical training and operation method |
CN115520742A (en) * | 2022-10-27 | 2022-12-27 | 中国城市建设研究院有限公司 | Constant force device, connecting equipment and building |
CN115520742B (en) * | 2022-10-27 | 2023-08-18 | 中国城市建设研究院有限公司 | Building |
Also Published As
Publication number | Publication date |
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CN101507871B (en) | 2010-06-09 |
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Granted publication date: 20100609 Termination date: 20130327 |