CN2564147Y - Spacing protecting mechanism for rocker of recovery bed - Google Patents
Spacing protecting mechanism for rocker of recovery bed Download PDFInfo
- Publication number
- CN2564147Y CN2564147Y CN 02263696 CN02263696U CN2564147Y CN 2564147 Y CN2564147 Y CN 2564147Y CN 02263696 CN02263696 CN 02263696 CN 02263696 U CN02263696 U CN 02263696U CN 2564147 Y CN2564147 Y CN 2564147Y
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- CN
- China
- Prior art keywords
- steel bushing
- trocar sheath
- screw
- screw rod
- rocking bar
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- 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
Disclosed is a rocker positioning protecting mechanism for a rehabilitation bed, which comprises a screw rod, a screw rod nut and an external bushing. The screw rod nut is connected fixedly with the external bushing. The utility model is characterized in also comprising a horn sleeve and a transmission tube. The horn sleeve is sleeved on the external bushing; a rotating connecting structure with a tube shaft as a rotating shaft is formed through a connecting device between the transmission tube and the external bushing; the two ends of the screw rod are provided with positioning mechanisms. When a rocker moves to a limit position, the external bushing can slip and idle following the screw rod nut timely in the horn sleeve and dose not move forward and backward, so that the screw rod and the screw rod nut are not damaged and the service life is prolonged.
Description
Technical field
This utility model relates to a kind of rocking bar position limitation protection mechanism, is mainly used in the rocker lifter mechanism of recovery bed (pretend illness again bed, nursing bed), when extreme position screw rod and nut is played a protective role.
Background technology
For satisfying patient's different demands, the recovery bed lowering or hoisting gear that is equipped with that in hospital, uses, at present, most of recovery bed be that manual type is recovery bed, the employing screw drive mechanism makes bed board generation lifting and inclination by shaking handle.Screw drive mechanism generally includes screw rod; bolt and nut and trocar sheath; bolt and nut is fixed in the trocar sheath; trocar sheath is fixed on the body; one end of screw rod is connected with elevating mechanism; when turning handle; screw rod rotates relative to bolt and nut; because bolt and nut is fixed; axial moving takes place in screw rod; thereby drive elevating mechanism, old-fashioned screw drive mechanism do not have the protection of consideration to bolt and nut, during use; after rocking bar is shaken extreme position, can cause rocking bar to be twisted off owing to overexert to continue to shake; the bed body is pushed up distortion; thread is killed and problem such as can not be replied.
To this; medical equipment circle has been done all unremitting efforts; the protection structure of two kinds of endplay devices is disclosed respectively as Chinese utility model patent CN2320236Y and CN2441469Y; its common ground is; make bolt and nut with respect to the trocar sheath axial location; and can be moving in the trocar sheath transfer; and bolt and nut and trocar sheath are fixed by elastic mechanism (as jump ring etc.); like this, when normal the use, bolt and nut is motionless; and screw rod its motion relatively; the action of promotion elevating mechanism, and behind the position that reaches capacity, the stressed disengaging of elastic mechanism; bolt and nut changes in trocar sheath hollow; the parts of avoiding the further axially-movable of screw rod to cause damage, the elastic mechanism difference of above-mentioned two patents, but action principle is consistent with basic structure.This class formation has solved the spacing problem of screw rod to a certain extent, but, owing to be connected for elastic mechanism between bolt and nut and trocar sheath, in use for some time, the stressed variation of elastic mechanism can cause in normal travel bolt and nut to be driven by screw rod and dally, and needs often be adjusted it, maintenance is trouble, even influence is used.
Summary of the invention
This utility model purpose provides a kind of rocking bar position limitation protection mechanism, can provide effective protection to screw rod and bolt and nut, to increase the service life when reaching the limit of the position.
For achieving the above object; the technical solution adopted in the utility model is: a kind of recovery bed rocking bar position limitation protection mechanism; comprise screw rod, bolt and nut and trocar sheath; bolt and nut is fixedlyed connected with trocar sheath; also include loudspeaker cover and transmission tube; described loudspeaker condom is on trocar sheath, and constituting with the tubular axis by connecting device between described transmission tube and trocar sheath is the rotation connection structure of turning cylinder, and described screw rod two ends are provided with position limiting structure.
In the technique scheme; during use; screw rod and loudspeaker cover are fixed by screw bolt seat and bed body, and an end of transmission tube is connected with the elevating mechanism of bed body, during by the rocking bar rotating screw bolt; the back, shank, lathe bed of bed can lifting; when shaking extreme position, because the effect of position limiting structure, screw rod will drive bolt and nut, trocar sheath skid in the loudspeaker cover together; can not be subjected to axial impulsive force, screw rod and bolt and nut are protected.
In the technique scheme, described connecting device is, a telescopic outside end is provided with the screw steel bushing, is provided with the location steel bushing at an end of transmission tube, and the protuberance of T type connecting rod is fastened on the inboard of screw steel bushing, and its other end is fixedlyed connected with location steel bushing and transmission tube.Wherein, described screw steel bushing is connected with the trocar sheath end convolution, and the inwall of T type connecting rod and screw steel bushing is fitted and is rotationally connected; T type connecting rod is fixedlyed connected by screw with location steel bushing and transmission tube.
In the said structure, during installation, only need T type connecting rod is inserted in the screw steel bushing, the screw steel bushing is screwed in the screw thread of trocar sheath end, the location steel bushing is put into transmission tube one end, and insert in the steel bushing of location the end of T type connecting rod, with screw transmission tube, location steel bushing is fixedlyed connected with T type connecting rod.Here, T type connecting rod plays a supportive role to trocar sheath and transmission tube simultaneously, it is axially consistent to guarantee both, when screw rod rotates, trocar sheath will promote that transmission tube travels forward or move backward by T type connecting rod pulling transmission tube, to drive the elevating mechanism action, when extreme position, the screw steel bushing will only skid with the location steel bushing relative to T type connecting rod and rotate, and no longer axially-movable take place.
For guaranteeing enough support forces and frictional force, the length of described screw steel bushing is at least 25 millimeters.Simultaneously, consider from the break-in driving angle, during installation, the screw steel bushing with respect to T type connecting rod in the gap that 1 millimeter axially should be arranged.
In the technique scheme, described position limiting structure makes screw rod be stuck when moving to extreme position, and can't continue to do axially-movable with respect to bolt and nut, and this position limiting structure can be, respectively be provided with a spacer pin at the two ends of screw rod, respectively be provided with an alignment pin at the bolt and nut two ends; Also can be, respectively be provided with a spacer pin at the two ends of screw rod, the both sides of bolt and nut respectively be provided with spacing preiection on trocar sheath; Perhaps adopt spacing disk to replace spacer pin.
In the technique scheme, for guaranteeing in loudspeaker cover and the trocar sheath certain frictional resistance is arranged, prevent from course of normal operation, to skid, can have groove in described loudspeaker cover end, loudspeaker overlap an end and are with the gum elastic cover, and the gum elastic cover is with fastening loudspeaker cover, make between itself and trocar sheath enough frictional force is arranged, and when reaching the limit of the position, its elasticity can make loudspeaker covers suitably loosen again, trocar sheath can be in plastics loudspeaker cover skid.
In the technique scheme, described connecting device also can be a bearing jointing structure.
Because the technique scheme utilization, this utility model compared with prior art has following advantage:
1. because this utility model is provided with transmission tube and loudspeaker cover, when extreme position, trocar sheath has played the protective effect to screw rod and bolt and nut with the bolt and nut rotation of skidding;
2. in the proper motion process, trocar sheath is subjected to the frictional resistance of loudspeaker cover and T type connecting rod simultaneously, because the contact area of loudspeaker cover and T type connecting rod and trocar sheath is bigger, thereby be difficult for skidding, contact spacing comparing with the small size by jump ring between bolt and nut in the prior art and trocar sheath, long service life, and needn't adjust in the use, easy to use.
Description of drawings
Accompanying drawing 1 is the structural representation of this utility model embodiment one;
Accompanying drawing 2 is the sketch map of loudspeaker cover part among Fig. 1;
Accompanying drawing 3 is the structural representation of advanced state among this utility model embodiment two;
Accompanying drawing 4 is the structural representation of the state of pulling back among the embodiment two.
Wherein: [1], screw steel bushing; [2], location steel bushing; [3], screw; [4], T type connecting rod; [5], spacer pin; [6], alignment pin; [7], screw rod; [8], bolt and nut; [9], transmission tube; [10], trocar sheath; [11], gum elastic cover; [12], loudspeaker cover; [13], protuberance; [14], spacing preiection; [15], groove.
The specific embodiment
Below in conjunction with drawings and Examples this utility model is further described:
Embodiment one: shown in accompanying drawing 1 and accompanying drawing 2; a kind of recovery bed rocking bar position limitation protection mechanism; comprise screw rod 7; bolt and nut 8 and trocar sheath 10; bolt and nut 8 is fixedlyed connected with trocar sheath 10; also include loudspeaker cover 12 and transmission tube 9; described loudspeaker cover 12 is a working of plastics; its end has groove 15; tightly be enclosed within on the trocar sheath 10 by 11 compressings of gum elastic cover; the screw steel bushing 1 that is connected with 25 millimeters long in an end and the trocar sheath end convolution of trocar sheath 10; end at transmission tube 9 is provided with location steel bushing 2; the protuberance 13 of T type connecting rod 4 is fastened on the inboard of screw steel bushing 1; fit and be rotationally connected with the inwall of screw steel bushing 1; its other end is fixedlyed connected by screw 3 with location steel bushing 2 and transmission tube 9; formation is the rotation connection structure of turning cylinder with the tubular axis, and described screw rod 7 two ends respectively are provided with a spacer pin 5, respectively are provided with an alignment pin 6 at bolt and nut 8 two ends.
Embodiment two: shown in accompanying drawing 3 and accompanying drawing 4; a kind of recovery bed rocking bar position limitation protection mechanism; comprise screw rod 7; bolt and nut 8 and trocar sheath 10; bolt and nut 8 is fixedlyed connected with trocar sheath 10; also include loudspeaker cover 12 and transmission tube 9; described loudspeaker cover 12 is a working of plastics; its end has groove 15; tightly be enclosed within on the trocar sheath 10 by 11 compressings of gum elastic cover; the screw steel bushing 1 that is connected with 30 millimeters long in an end and the trocar sheath end convolution of trocar sheath 10; end at transmission tube 9 is provided with location steel bushing 2; the protuberance 13 of T type connecting rod 4 is fastened on the inboard of screw steel bushing 1; fit and be rotationally connected with the inwall of screw steel bushing 1; its other end is fixedlyed connected by screw 3 with location steel bushing 2 and transmission tube 9; formation is the rotation connection structure of turning cylinder with the tubular axis, respectively is provided with a spacer pin 5 at the two ends of screw rod 7, and the both sides of bolt and nut 8 respectively are provided with spacing preiection 14 on trocar sheath 10.
Between screw steel bushing and T type connecting rod, have the gap of 1 millimeter.Situation when promoting drive link for rotating screw bolt as shown in Figure 3, trocar sheath 10 compresses with transmission tube 9, and T type connecting rod 4 draws back the gap with screw steel bushing 1, and during to extreme position, screw steel bushing 1 is with respect to T type connecting rod 4 and location steel bushing 2 skids; The situation that accompanying drawing 4 is depicted as rotating screw bolt when pulling back drive link, trocar sheath 10 draws back gap 1 millimeter with transmission tube 9, during to extreme position, screw steel bushing 1 and T type connecting rod 4 skids.
Claims (9)
1. recovery bed rocking bar position limitation protection mechanism; comprise screw rod [7], bolt and nut [8] and trocar sheath [10]; bolt and nut [8] is fixedlyed connected with trocar sheath [10]; it is characterized in that: also include loudspeaker cover [12] and transmission tube [9]; described loudspeaker cover [12] is enclosed within on the trocar sheath [10]; constituting with the tubular axis by connecting device between described transmission tube [9] and trocar sheath [10] is the rotation connection structure of turning cylinder, and described screw rod [7] two ends are provided with position limiting structure.
2. recovery bed rocking bar position limitation protection as claimed in claim 1 mechanism; it is characterized in that: described connecting device is; end at trocar sheath [10] is provided with screw steel bushing [1]; end at transmission tube [9] is provided with location steel bushing [2]; the protuberance [13] of T type connecting rod [4] is fastened on the inboard of screw steel bushing [1], and its other end is fixedlyed connected with location steel bushing [2] and transmission tube [9].
3. recovery bed rocking bar position limitation protection as claimed in claim 2 mechanism, it is characterized in that: described screw steel bushing [1] is connected with trocar sheath [10] end convolution, and T type connecting rod [4] is fitted with the inwall of screw steel bushing [1] and also is rotationally connected.
4. recovery bed rocking bar position limitation protection as claimed in claim 3 mechanism, it is characterized in that: T type connecting rod [4] is fixedlyed connected by screw [3] with location steel bushing [2] and transmission tube [9].
5. recovery bed rocking bar position limitation protection as claimed in claim 3 mechanism, it is characterized in that: the length of described screw steel bushing [1] is at least 25 millimeters.
6. recovery bed rocking bar position limitation protection as claimed in claim 1 or 2 mechanism is characterized in that: described position limiting structure is, respectively is provided with a spacer pin [5] at the two ends of screw rod [7], respectively is provided with an alignment pin [6] at bolt and nut [8] two ends.
7. recovery bed rocking bar position limitation protection as claimed in claim 1 or 2 mechanism; it is characterized in that: described position limiting structure is; respectively be provided with a spacer pin [5] at the two ends of screw rod [7], the both sides of going up bolt and nut [8] at trocar sheath [10] respectively are provided with spacing preiection [14].
8. recovery bed rocking bar position limitation protection as claimed in claim 1 mechanism, it is characterized in that: described loudspeaker cover [12] end has groove [15], and loudspeaker cover [12] one ends are with gum elastic cover [11].
9. recovery bed rocking bar position limitation protection as claimed in claim 1 mechanism, it is characterized in that: described connecting device is a bearing jointing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02263696 CN2564147Y (en) | 2002-08-09 | 2002-08-09 | Spacing protecting mechanism for rocker of recovery bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02263696 CN2564147Y (en) | 2002-08-09 | 2002-08-09 | Spacing protecting mechanism for rocker of recovery bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2564147Y true CN2564147Y (en) | 2003-08-06 |
Family
ID=33730030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02263696 Expired - Fee Related CN2564147Y (en) | 2002-08-09 | 2002-08-09 | Spacing protecting mechanism for rocker of recovery bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2564147Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105222B (en) * | 2007-08-22 | 2010-05-19 | 上海久能机电制造有限公司 | Electric screw overtravel automatic safe protective device |
| CN103622785A (en) * | 2013-11-25 | 2014-03-12 | 宿州市江海医疗器械有限公司 | Rocking bar device for preventing sickbed lifting lead screw from being twisted off |
| CN109140030A (en) * | 2018-10-12 | 2019-01-04 | 中船澄西船舶修造有限公司 | A kind of distal end transmission device of Outside screw stem rising through handwheel type gate valve |
| CN109277809A (en) * | 2018-11-27 | 2019-01-29 | 途客电力科技（天津）有限公司 | Dock With Precision Position component, Dock With Precision Position device and interconnection method |
-
2002
- 2002-08-09 CN CN 02263696 patent/CN2564147Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105222B (en) * | 2007-08-22 | 2010-05-19 | 上海久能机电制造有限公司 | Electric screw overtravel automatic safe protective device |
| CN103622785A (en) * | 2013-11-25 | 2014-03-12 | 宿州市江海医疗器械有限公司 | Rocking bar device for preventing sickbed lifting lead screw from being twisted off |
| CN109140030A (en) * | 2018-10-12 | 2019-01-04 | 中船澄西船舶修造有限公司 | A kind of distal end transmission device of Outside screw stem rising through handwheel type gate valve |
| CN109140030B (en) * | 2018-10-12 | 2020-09-18 | 中船澄西船舶修造有限公司 | Remote end transmission device of rising stem gate valve |
| CN109277809A (en) * | 2018-11-27 | 2019-01-29 | 途客电力科技（天津）有限公司 | Dock With Precision Position component, Dock With Precision Position device and interconnection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |