CN202219068U - Damping limiting device and arm extension apparatus using the device - Google Patents
Damping limiting device and arm extension apparatus using the device Download PDFInfo
- Publication number
- CN202219068U CN202219068U CN2011202935674U CN201120293567U CN202219068U CN 202219068 U CN202219068 U CN 202219068U CN 2011202935674 U CN2011202935674 U CN 2011202935674U CN 201120293567 U CN201120293567 U CN 201120293567U CN 202219068 U CN202219068 U CN 202219068U
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- installation shaft
- sleeve
- damping
- torsion spring
- friction plate
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Abstract
The utility model relates to a damping limiting device, which comprises an installing shaft and a sleeve. Two torsion springs are equipped inside the sleeve. When the sleeve swings forwards beyond a certain angle, a block located inside the sleeve then starts to bump into the second free end of one torsion spring. The torsion spring is then made to tighten the installing shaft. The sleeve is then unable to swing forwards continuously. When the sleeve swings backwards beyond a certain angle, another block located inside the sleeve starts to bump into the second free end of the other torsion spring. The torsion spring is then made to tighten the installing shaft. The sleeve is then unable to swing backwards continuously. Thus the sleeve is only allowed to swing within a certain angle range. The rotation angle is then limited. Furthermore, by fixing static friction sheets with the installing shaft, fixing dynamic friction sheets with the damping sleeve, and making the dynamic friction sheets and the static friction sheets mutually compressed through springs, the damping limiting device in the utility model is then enabled to achieve damping effects on the rotation of the sleeve.
Description
Technical field
The utility model belongs to rotary oscillation class body-building apparatus technical field, relates in particular to a kind of arm extension apparatus that is used for the damping stopping means of body-building apparatus and has this device.
Background technology
People more and more is paid attention to body-building and exercise, all supporting some the public body-building apparatus that are provided with in a lot of sub-districts, and utilization rate at ordinary times is also very high.In the various body-building apparatus, wherein rotary oscillation class body-building apparatus has more kind, rubs thruster etc. like great wheel, arm extension apparatus, crura-healing equipment, Tai Ji.
Arm extension apparatus is to use the highest modal body-building apparatus of frequency, and it is by column, support; Form with some swing arms and stay cord, swing arm rotates, and stay cord is realized up-down alternative motion; Thereby user's upper limbs obtains taking exercise with the shoulder back; Artificial damage or method for using are incorrect, and spoilage is higher, so a GB regulation rotation type equipment should have stopping means; The common way that overcomes artificial damage is to change stay cord into steel wire rope with shearing-proof by the rope made of hemp or nylon rope; And steel wire rope and directed stop collar (converting a limit element that moves up and down by rotation to) friction and damage steel wire rope and stop collar (nylon or copper material) repair rate higher, so arm extension apparatus space that is significantly improved, but some technical barrier is still unresolved
For reaching body-building effect preferably, prevent simultaneously to rotate that too fast a national regulation rotation type equipment will have damping function to strengthen security, GB has stopping means when requiring swinging up and down of oscillation type movement apparatus, to guarantee user's safety.
Yet the existing disclosed various arm extension apparatus of patent all do not have the damping stopping means, therefore on safety in utilization, are short of to some extent.Like a patent No. is the Chinese utility model patent " arm extension apparatus " of ZL201020213716.7 (notification number is CN201744129U); Reaching a patent No. is the Chinese utility model patent " a kind of arm extension apparatus " of ZL201020583229.X (notification number is CN201906410U), and they have all disclosed a kind of arm extension apparatus of conventional structure.
Existing for this reason rotary oscillation class body-building apparatus presses for installs a kind of damping and corner stopping means.
Summary of the invention
The utility model technical problem to be solved is to above-mentioned prior art present situation a kind of damping due to rotation structure that is used for body-building apparatus that has to be provided, and this damping structure has changes advantage convenient, damping adjustable size joint.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of damping stopping means, include installation shaft and sleeve pipe, and casing pipe sleeve is located on the installation shaft and installation shaft rotation relatively; It is characterized in that: also be arranged with two torsion springs on the said installation shaft; First free end in said two torsion springs is all fixed with installation shaft; Second free end in two torsion springs exposes outside installation shaft, also is fixed with two collision blocks in the said sleeve, each collision block respectively with each torsion spring on second free end corresponding; Under sleeve overturns above the certain angle state forward; Wherein second free end collision of collision block and a torsion spring wherein and make this torsion spring banding installation shaft, under sleeve was turned over above the certain angle state, another piece collision block made this torsion spring banding installation shaft with second free end collision of another root torsion spring wherein; The front end of said sleeve pipe is fixed with the damping cover, and said installation shaft front end inserts in the damping cover, and the front end sleeve of installation shaft is provided with static friction sheet and movable friction plate; Wherein, Said static friction sheet circumferentially constrains on the installation shaft and can move axially along installation shaft, and said movable friction plate is set on the installation shaft can overlap axial slippage and the rotation of relative installation shaft along damping, and movable friction plate and static friction sheet are in contact with one another; Simultaneously; The perimeter constraint of movable friction plate on the inwall of damping cover and can be with the rotation of damping cover, also sheathed spring on the installation shaft, this spring makes through the locking nut that is threaded in the installation shaft top is spacing that maintenance compresses trend between static friction sheet and the movable friction plate.
Have the draw-in groove that is provided with vertically on the above-mentioned installation shaft, first free end of said each torsion spring all is fastened in the said draw-in groove.This structure is convenient to install torsion spring and first free end and the installation shaft of torsion spring is located, and during installation each torsion spring set is located on the installation shaft, and the free end with each torsion spring snaps in i.e. completion in the draw-in groove again.
Have two installing holes on the above-mentioned sleeve, said each collision block is plugged in respectively in the corresponding mounting hole, and the inner of each collision block is stretched in the sleeve and can be cooperated with second free end of said torsion spring.This structure is convenient to install each collision block, and the end with the collision block plane during installation clashes into accurately with assurance with the sleeve axis parallel from outside the insertion in the installing hole of sleeve, and promptly accomplish and install, be close-fitting between each collision block and the installing hole, or seam outside sleeve.
Rotate more flexible for making the relative installation shaft of sleeve; Be provided with the bearing that two intervals are provided with between above-mentioned sleeve lining and the installation shaft side face; Said two torsion springs are between two bearings; The omoplate of baffle ring and the sleeve outer end of the said bearing that is positioned at the installation shaft outer end through being fixed on sleeve constrains in the outer end of installation shaft, is positioned at the inner bearing of installation shaft and then constrains in the inner of installation shaft with the omoplate of back-up ring and sleeve the inner through being buckled in the inner hole of installation shaft.This structure is convenient to bearing is installed also spacing on installation shaft, and also is convenient to change like damage of bearings.
For strengthening the damping of rotating disk; Above-mentioned static friction sheet and movable friction plate respectively have two; Static friction sheet and movable friction plate are intervally installed; The damping cover has diapire, and the upper and lower end face of the movable friction plate between two static friction sheets contacts with the end face of adjacent static friction sheet respectively, and the lower surface that is positioned at movable friction plate bottom contacts with the diapire of damping cover.
Be fixed with two flat keys on the above-mentioned installation shaft, have two breach that match with the flat key profile on the inner hole wall of said static friction sheet, the said flat key that exposes outside the installation shaft side face is positioned at said breach.It is a kind of concrete mounting structure of static friction sheet, and this structure has simple in structure and convenient installation, through cooperating of flat key and breach, guarantee the static friction sheet relatively the installation shaft rotation time assurance static friction sheet steadily move axially along installation shaft.
Be fixed with two straight pins on the internal perisporium of above-mentioned damping cover, have two grooves that match with the straight pin profile on the side face of said movable friction plate, said straight pin is positioned at said groove.It is a kind of concrete mounting structure of movable friction plate, and this structure has simple in structure and convenient installation, through cooperating of straight pin and groove, guarantees that movable friction plate can rotate with sleeve pipe, simultaneously sleeve pipe axial slip relatively.
Also be arranged with packing ring on the above-mentioned installation shaft, this packing ring is between locking nut and spring.Contact area between packing ring ability support locking nut and the spring is set, makes spring stress even.
For preventing that impurity from getting in the sleeve pipe, and influence damping structure, the front opening place of above-mentioned damper tube is provided with end cap seal.
A kind of arm extension apparatus with aforementioned damping stopping means; Comprise support, swing arm and two stay cords; Said installation shaft is positioned at the top of support; Said sleeve pipe is fixed on the middle part of swing arm, and the upper end of said two stay cords is rotatably connected on the two ends of fork respectively through joint, and the lower end of each stay cord is provided with handle.It is the concrete application of aforementioned damping stopping means on arm extension apparatus, also can be used for other similar health and fitness facilities certainly.
Compared with prior art, the advantage of the utility model is: this device has the spacing and two kinds of functions of rotary damping of rotational angle, and it is provided with two torsion springs in sleeve; When sleeve is swung forward above certain angle; One of them collision block that is positioned at sleeve begins and wherein second free end collision of a torsion spring, makes torsion spring banding installation shaft, and sleeve can not continue to swing forward; When sleeve is swung above certain angle backward; Wherein another collision block that is positioned at sleeve begins and wherein second free end collision of another root torsion spring, makes torsion spring banding installation shaft, and sleeve can not continue to swing backward; Therefore sleeve can only be swung in the certain angle scope, realizes that rotational angle is spacing; Through static friction sheet and installation shaft relative fixed, relative fixed is overlapped in movable friction plate and damping in addition, and with spring movable friction plate and static friction sheet is compressed each other, realizes the damping action that sleeve pipe is rotated.
Description of drawings
Fig. 1 is the structure cutaway view of damping stopping means embodiment;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
Fig. 3 is the stereochemical structure exploded view of damping stopping means embodiment;
Fig. 4 is for being equipped with the sketch map of the sleeve behind the collision block among the damping stopping means embodiment;
Fig. 5 is the perspective view of static friction sheet among the damping stopping means embodiment;
Fig. 6 is the perspective view of movable friction plate among the damping stopping means embodiment;
Fig. 7 is the perspective view with arm extension apparatus of this damping stopping means.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Shown in Fig. 1～6, be a preferred embodiment of the utility model.
A kind of damping stopping means includes installation shaft 1 and sleeve pipe 2, and sleeve pipe 2 is fixed on the rotary part of body-building apparatus, and sleeve pipe 2 is set on the installation shaft 1 and installation shaft 1 rotation relatively.
Be provided with the bearing 9 that two intervals are provided with between sleeve 2 inwalls and installation shaft 1 side face; The omoplate 22 of baffle ring 10 and sleeve 2 outer ends of the bearing 9 that is positioned at installation shaft 1 outer end through being fixed on sleeve constrains in the outer end of installation shaft 1, is positioned at 9 on the inner bearing of installation shaft 1 and constrains in the inners of installation shaft 1 with back-up ring 12 and the omoplates 23 of sleeve 2 the inners through being buckled in installation shaft 1 inner hole.
The structure of rotational angle stop portion is following:
Also be arranged with two torsion springs 3 on the installation shaft 1; Two torsion springs 3 are between two bearings 9; First free end 31 in two torsion springs 3 is all fixing with installation shaft 1; Promptly on installation shaft 1, have vertically the draw-in groove 11 that is provided with, first free end 31 of each torsion spring 3 all is fastened in the draw-in groove 11, and second free end 32 in two torsion springs 3 exposes outside installation shaft 1.
Also be fixed with two collision blocks 4 in the sleeve 2; Angle between two collision blocks 4 is roughly 80 °; Collision block 4 adopts following structure to be fixed in the sleeve 2; On sleeve 2, have two installing holes 21, each collision block 4 is plugged in respectively in the corresponding mounting hole 21, and the inner of each collision block 4 is stretched in the sleeve 2 and can be cooperated with second free end 32 of torsion spring 3.Each collision block 4 respectively with each torsion spring 3 on second free end 32 corresponding; Overturn forward above under the certain angle state at sleeve 2; Wherein collision block 4 makes this torsion spring 3 banding installation shaft 1 with second free end, 32 collisions of a torsion spring 3 wherein; Under sleeve 2 was turned over above the certain angle state, another piece collision block 4 made this torsion spring 3 banding installation shaft 1 with second free end, 32 collisions of another root torsion spring 3 wherein.
When sleeve 2 is swung forward above certain angle (roughly 45 degree); Be positioned at one of them collision block 4 beginnings of sleeve 2 and wherein second free end, 32 collisions of a torsion spring 3, during 10 °～20 ° of torsion spring 3 stressed rotations, make torsion spring 3 banding installation shaft 2; Promptly complete " locking " is on installation shaft 1; Sleeve 2 can not continue to swing forward, and the energy that sleeve 2 rotates is absorbed at 45 degree～55 degree angles by torsion spring 3, and torsion spring 3 plays cushioning effect; When sleeve 2 is swung above certain angle (roughly 45 degree) backward; Be positioned at wherein another collision block 4 beginnings of sleeve 2 and wherein second free end, 32 collisions of another root torsion spring 3; Make torsion spring 3 banding installation shaft 1, sleeve 2 can not continue to swing backward, so sleeve 2 can only be swung in the certain angle scope; Avoid the rigidity bump, effectively protected user's safety.
The damping due to rotation structure is specific as follows:
The front end of sleeve pipe 2 is welded with damping cover 5, and damping cover 5 has diapire, and the front opening place of damping cover 5 is provided with end cap 52 sealings.
Installation shaft 1 front end inserts in the damping cover 5, and the front end sleeve of installation shaft 1 is provided with static friction sheet 6 and movable friction plate 7, and static friction sheet 6 respectively has two with movable friction plate 7, and static friction sheet 6 is intervally installed with movable friction plate 7, and movable friction plate 7 is the sinusoidal waveform sheet.The sinusoidal waveform sheet is that the end face profile of movable friction plate is waveform along the circumferential direction, can increase the contact area with the static friction sheet when end face of this movable friction plate is squeezed, thereby increases frictional force between the two, further strengthens the damping of rotating disk.
Wherein, Static friction sheet 6 circumferentially constrains on the installation shaft 1 and can move axially along installation shaft 1; Static friction sheet 6 adopts following structure to be installed on the installation shaft 1; Be fixed with two flat keys 13 on the installation shaft 1, have two breach 61 that match with the flat key profile on the inner hole wall of static friction sheet 6, the flat key 13 that exposes outside installation shaft 1 side face is positioned at breach 61.
The upper and lower end face of the movable friction plate 7 between two static friction sheets 6 contacts with the end face of adjacent static friction sheet 6 respectively, and the lower surface that is positioned at movable friction plate 7 bottom contacts with the diapire of damping cover 5.Also sheathed spring 8 on the installation shaft 1, this spring 8 keeps compressing trend through locking nut 19 spacing the making that are threaded in installation shaft 1 top between static friction sheet 6 and the movable friction plate 7.On the installation shaft 1 between locking nut 9 and the spring 8, also be arranged with packing ring 14, this packing ring 14 is between locking nut 9 and spring 8.
This damping due to rotation structure is through static friction sheet 6 and installation shaft 1 relative fixed; Movable friction plate 7 overlaps 5 relative fixed with damping; And with spring 8 movable friction plate 7 and static friction sheet 6 are compressed each other, realize damping action that damping cover 5 is rotated, and damping cover 5 is fixing with sleeve pipe 2; 2 of sleeve pipes are fixed on the rotary part of body-building apparatus; So the final damping action that realizes rotary part comes the pressure of regulating spring 5 to come the final adjusting that realizes damping force through turn locking nut 19 in addition, movable friction plate 4 is changed also very convenient with static friction sheet 3 wearing and tearing backs.
As shown in Figure 7; A kind of arm extension apparatus with aforementioned damping stopping means; Comprise support 15, swing arm 16 and two stay cords 17, installation shaft 1 is positioned at the top of support 15, and sleeve pipe 2 is fixed on the middle part of swing arm 16; The upper end of two stay cords 17 is rotatably connected on the two ends of fork 16 respectively through joint 18, the lower end of each stay cord 17 is provided with handle 19.
Claims (10)
1. a damping stopping means includes installation shaft (1) and sleeve pipe (2), and sleeve pipe (2) is set in installation shaft (1) and goes up also installation shaft (1) rotation relatively; It is characterized in that:
Also be arranged with two torsion springs (3) on the said installation shaft (1); First free end (31) in said two torsion springs (3) is all fixing with installation shaft (1); Second free end (32) in two torsion springs (3) exposes outside installation shaft (1); Also be fixed with two collision blocks (4) in the said sleeve (2); Each collision block (4) respectively with each torsion spring (3) on second free end (32) corresponding, overturning forward at sleeve (2) surpasses under the certain angle state, wherein a collision block (4) makes this torsion spring (3) banding installation shaft (1) with second free end (32) collision of a torsion spring (3) wherein; Under sleeve (2) was turned over above the certain angle state, another piece collision block (4) made this torsion spring (3) banding installation shaft (1) with second free end (32) collision of another root torsion spring (3) wherein;
The front end of said sleeve pipe (2) is fixed with damping cover (5); Said installation shaft (1) front end inserts in the damping cover (5); The front end sleeve of installation shaft (1) is provided with static friction sheet (6) and movable friction plate (7), and wherein, said static friction sheet (6) circumferentially constrains in installation shaft (1) and goes up and can move axially along installation shaft (1); Said movable friction plate (7) is set in can be along damping cover (2) axial slip and relative installation shaft (1) rotation on the installation shaft (1); Movable friction plate (7) and static friction sheet (6) are in contact with one another, and simultaneously, the perimeter constraint of movable friction plate (7) is on the inwall of damping cover (5) and can rotate with damping cover (5); Said installation shaft (1) goes up also sheathed spring (8), and this spring (8) keeps compressing trend through spacing the making of the locking nut (19) that is threaded in installation shaft (1) top between static friction sheet (6) and the movable friction plate (7).
2. damping stopping means according to claim 1 is characterized in that: have the draw-in groove (11) that is provided with vertically on the said installation shaft (1), first free end (31) of said each torsion spring (3) all is fastened in the said draw-in groove (11).
3. damping stopping means according to claim 1; It is characterized in that: have two installing holes (21) on the said sleeve (2); Said each collision block (4) is plugged in respectively in the corresponding mounting hole (21), and the inner of each collision block (4) is stretched in the sleeve (2) and can be cooperated with second free end (32) of said torsion spring (3).
4. damping stopping means according to claim 1; It is characterized in that: be provided with the bearing (9) that two intervals are provided with between said sleeve (2) inwall and installation shaft (1) side face; Said two torsion springs (3) are positioned between the two bearings (9); The omoplate (22) of baffle ring (10) and sleeve (2) outer end of the said bearing (9) that is positioned at installation shaft (1) outer end through being fixed on sleeve constrains in the outer end of installation shaft (1), is positioned at the inner bearing (9) of installation shaft (1) and then constrains in the inner of installation shaft (1) with the omoplate (23) of back-up ring (12) and sleeve (2) the inner through being buckled in the inner hole of installation shaft (1).
5. damping stopping means according to claim 1; It is characterized in that: said static friction sheet (6) and movable friction plate (7) respectively have two; Static friction sheet (6) and movable friction plate (7) are intervally installed; Damping cover (5) has diapire, and the upper and lower end face that is positioned at the movable friction plate (7) between the two static friction sheets (6) contacts with the end face of adjacent static friction sheet (6) respectively, and the lower surface that is positioned at movable friction plate (7) bottom contacts with the diapire of damping cover (5).
6. damping stopping means according to claim 1; It is characterized in that: be fixed with two flat keys (13) on the said installation shaft (1); Have two breach (61) that match with the flat key profile on the inner hole wall of said static friction sheet (6), the said flat key (13) that exposes outside installation shaft (1) side face is positioned at said breach (61).
7. damping stopping means according to claim 1; It is characterized in that: be fixed with two straight pins (51) on the internal perisporium of said damping cover (5); Have two grooves (71) that match with straight pin (51) profile on the side face of said movable friction plate (7), said straight pin (51) is positioned at said groove (71).
8. the damping due to rotation structure that is used for body-building apparatus according to claim 1 is characterized in that: also be arranged with packing ring (14) on the said installation shaft (1), this packing ring (14) is positioned between locking nut (19) and the spring (8).
9. the damping due to rotation structure that is used for body-building apparatus according to claim 1 is characterized in that: the front opening place of said damping cover (5) is provided with end cap (52) sealing.
10. arm extension apparatus that has like the damping stopping means of arbitrary claim in the claim 1～9; Comprise support (15), swing arm (16) and two stay cords (17); Said installation shaft (1) is positioned at the top of support (15); Said sleeve pipe (2) is fixed on the middle part of swing arm (16), and the upper end of said two stay cords (17) is rotatably connected on the two ends of fork (16) respectively through joint (18), and the lower end of each stay cord (17) is provided with handle (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202935674U CN202219068U (en) | 2011-08-11 | 2011-08-11 | Damping limiting device and arm extension apparatus using the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202935674U CN202219068U (en) | 2011-08-11 | 2011-08-11 | Damping limiting device and arm extension apparatus using the device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202219068U true CN202219068U (en) | 2012-05-16 |
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ID=46041107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202935674U Withdrawn - After Issue CN202219068U (en) | 2011-08-11 | 2011-08-11 | Damping limiting device and arm extension apparatus using the device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202219068U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302837A (en) * | 2011-08-11 | 2012-01-04 | 宁波奇胜运动器材有限公司 | Damping limit device and upper limb tractor having same |
| CN106586868A (en) * | 2016-12-30 | 2017-04-26 | 上海致远绿色能源股份有限公司 | Compact-type damping buffer device, working method and application thereof |
| CN107648799A (en) * | 2016-07-25 | 2018-02-02 | 张仲甫 | The damping mechanism of body-building apparatus |
| CN111529183A (en) * | 2020-05-27 | 2020-08-14 | 王立华 | Nursing is with painful device of alleviating of rheumatism immunity |
-
2011
- 2011-08-11 CN CN2011202935674U patent/CN202219068U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302837A (en) * | 2011-08-11 | 2012-01-04 | 宁波奇胜运动器材有限公司 | Damping limit device and upper limb tractor having same |
| CN102302837B (en) * | 2011-08-11 | 2013-08-21 | 宁波奇胜运动器材有限公司 | Damping limit device and upper limb tractor having same |
| CN107648799A (en) * | 2016-07-25 | 2018-02-02 | 张仲甫 | The damping mechanism of body-building apparatus |
| CN106586868A (en) * | 2016-12-30 | 2017-04-26 | 上海致远绿色能源股份有限公司 | Compact-type damping buffer device, working method and application thereof |
| CN111529183A (en) * | 2020-05-27 | 2020-08-14 | 王立华 | Nursing is with painful device of alleviating of rheumatism immunity |
| CN111529183B (en) * | 2020-05-27 | 2022-03-25 | 王立华 | Nursing is with painful device of alleviating of rheumatism immunity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120516 Effective date of abandoning: 20130821 |
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| RGAV | Abandon patent right to avoid regrant |