CN104606011B - Limiting mechanism - Google Patents
Limiting mechanism Download PDFInfo
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- CN104606011B CN104606011B CN201510040733.2A CN201510040733A CN104606011B CN 104606011 B CN104606011 B CN 104606011B CN 201510040733 A CN201510040733 A CN 201510040733A CN 104606011 B CN104606011 B CN 104606011B
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- bearing pin
- swivel
- pin
- hinge axis
- limit mechanism
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Abstract
The invention relates to the field of medical instruments, and provides a limiting mechanism used for limiting a first rotating body and a second rotating body which are rotationally connected. The limiting mechanism comprises elastic positioning pins, a limiting plate, a hinge shaft and ropes. Each elastic positioning pin comprises a shaft sleeve, a pin shaft and an elastic piece, wherein one end of the pin shaft penetrates through the shaft sleeve in a telescopic mode, the elastic piece is elastically connected between the pin shaft and the shaft sleeve, and the pin shaft is installed on the first rotating body through the shaft sleeve. The limiting plate is installed on the second rotating body, limiting holes are formed in the limiting plate, and the limiting holes are formed below one rotating position of the elastic positioning pins so that the pin shafts can be connected with the limiting holes in an inserted and pulled mode. The hinge shaft is installed on the first rotating body, one ends of the ropes are hinged to the hinge shaft in a surrounding mode, the other ends of the ropes are connected with the other ends of the pin shafts, the ends, connected with the hinge shaft, of the ropes are higher than the ends, connected with the pin shafts, of the ropes, and the pin shafts are automatically inserted in the limiting holes through the elastic pieces. The limiting mechanism is convenient to operate, accurate in positioning, good in stability, simple in structure and convenient to use and popularize.
Description
Technical field
The present invention relates to medical instruments field, especially provides a kind of position-limit mechanism, being more specifically related to one kind is used for
The position-limit mechanism of seat or bed body.
Background technology
China human mortality is numerous, accounts for 1/5th of total world population or so, and Medical Device Market has a high potential, economic development
Accelerate to drive demand for medical service upgrading, rapid economic development to make the overall increase of health service need.Medical services market
Open gradually, the speed for making domestic and international capital investment Chinese medical service industry is accelerated, so that the demand of medicine equipment continues
Increase., used as a part more important in medical instruments field, its market prospects is also for medical seat or medical bed
It is wide, the fixation of medical seat or medical bed body, adjustment and it is spacing be required for being completed using stopping means, whether position adjustment
Accurately, it is convenient to directly influence the height of the quality and diagnosis and treatment efficiency of effects of clinic diagnosis.
Or existing position-limit mechanism single function, reliability and stability are poor, or complex structure, maintenance difficulty is big,
It is with high costs.Existing position-limit mechanism generally adopts a position-limitting pin, and on a certain restraining position limiting plate one is only provided with
Pin hole, its shortcoming is exactly that reliability and stability are poor, and it is unsatisfactory to be equipped in a certain limit effect, that is, exist rock or
Position-limitting pin can not accurately into the situation of spacing hole, operation inconvenience.
The content of the invention
(1) technical problem to be solved
It is an object of the invention to provide a kind of accurate positioning, good stability, easy to operate position-limit mechanism.
(2) technical scheme
For achieving the above object, the invention provides a kind of position-limit mechanism, turns and second for rotating connect first
It is spacing between swivel, including elastic positioning pin, limiting plate, hinge axis and rope；
The elastic positioning pin includes axle sleeve, bearing pin and elastic component, and one end of the bearing pin is telescopically arranged in described
Axle sleeve, between the bearing pin and axle sleeve, the bearing pin is arranged on described the to the elastic component elastic connection by the axle sleeve
On one swivel；
The limiting plate is arranged on the described second swivel, and spacing hole, the spacing hole position are offered on the limiting plate
In the lower section of the rotational orientation of the bearing pin, for making the bearing pin form pluggable connection with the spacing hole；
The hinge axis is arranged on the described first swivel；
One end of the rope is wire-wrapped in the hinge axis, and the other end is connected with the other end of the bearing pin, the rope
The one end being connected with the hinge axis is higher than the one end being connected with the bearing pin.
Preferably, the elastic positioning pin, rope and spacing hole correspond to be set to it is multiple.
Preferably, each described elastic positioning pin has the different size of radius of gyration relative to the described second swivel.
Preferably, the quantity of the spacing hole is multiple, and multiple spacing holes are respectively positioned at the elastic positioning pin
The lower section of different rotational orientations.
Preferably, the limiting plate is provided with bearing, and first swivel is rotationally connected with described the by the bearing
Two swivels.
Preferably, there is gap between the bearing pin and the axle sleeve；The elastic component is spring, and the spring housing is located at
In the bearing pin, and the gap between the bearing pin and axle sleeve；One end of the spring is connected with the bearing pin, the other end
It is connected with the axle sleeve.
Preferably, the hinge axis is arranged on the described first swivel by fixed plate, the hinge axis and the fixation
Board shaft holds connection.
Preferably, the hinge axis is provided with handle.
Preferably, the hinge axis is rotated by motor.
Preferably, the spacing hole is elongated hole.
(3) beneficial effect
The invention provides a kind of position-limit mechanism, spacing between the first swivel of connection and the second swivel for rotating,
Including elastic positioning pin, limiting plate, hinge axis and rope；Elastic positioning pin include axle sleeve, bearing pin and elastic component, the one of bearing pin
End is telescopically arranged in axle sleeve, and between bearing pin and axle sleeve, bearing pin is arranged on first turn to elastic component elastic connection by axle sleeve
On body；Limiting plate is arranged on the second swivel, and spacing hole is offered on limiting plate, and spacing hole is located at a certain turn of elastic positioning pin
The lower section in dynamic orientation, for making bearing pin form pluggable connection with spacing hole under the rotational orientation, is achieved in the first swivel
It is spacing between the second swivel；Hinge axis is arranged on the first swivel；One end of rope is wire-wrapped in hinge axis, the other end and pin
The other end connection of axle, higher than the one end being connected with bearing pin, bearing pin can be in the work of elastic component for one end that rope is connected with hinge axis
It is automatically inserted into under in spacing hole, easy to operate, accurate positioning, good stability, and mechanism simple structure, it is cheap,
It is easy to promote the use of.
Description of the drawings
Fig. 1 is a kind of schematic diagram of position-limit mechanism of the embodiment of the present invention；
Fig. 2 is the schematic diagram of the elastic positioning pin of the embodiment of the present invention.
Reference：
1st, elastic positioning pin；11st, axle sleeve；12nd, bearing pin；13rd, top cap；14th, elastic component；15th, nut is installed；2nd, limiting plate；
21st, spacing hole；3rd, hinge axis；4th, handle；5th, fixed plate；6th, bearing；7th, rope.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Hereinafter implement
Example is not limited to the scope of the present invention for illustrating the present invention.
In describing the invention, unless otherwise stated, term " on ", D score, " top ", " bottom ", " longitudinal direction " etc. refer to
The orientation or state relation for showing is, based on orientation shown in the drawings or state relation, to be for only for ease of the description present invention and simplify
Description, rather than indicate or imply that the device or element of indication must be with specific orientation, with specific azimuth configuration and behaviour
Make, therefore be not considered as limiting the invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " connection " should do
Broadly understood, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can be joined directly together,
Can also be indirectly connected to by intermediary.For the ordinary skill in the art, can understand above-mentioned with concrete condition
Term concrete meaning in the present invention.
Embodiment one
As shown in figure 1, the embodiment of the present invention one provides a kind of position-limit mechanism, for rotating first swivel and the of connection
Spacing between two swivels, the first swivel and the second swivel can be two pieces of split type bed boards for rotating connection of medical bed, this
Position-limit mechanism is arranged on the steelframe of two pieces of bed board sides, and this position-limit mechanism includes elastic positioning pin 1, limiting plate 2, hinge axis 3
And rope 7.
In conjunction with shown in Fig. 2, elastic positioning pin 1 includes axle sleeve 11, bearing pin 12 and spring；The bottom of bearing pin 12 is compared with middle part
Slightly, the bottom of bearing pin 12 is suitable with the internal diameter of axle sleeve 11, and the bottom of bearing pin 12 can make the bottom of bearing pin 12 in the interior slip of axle sleeve 11
End is telescopically arranged in axle sleeve 11, the i.e. bottom of bearing pin 12 can be flexible relative to the bottom of axle sleeve 11, or the length stretched out can
Adjust；There is gap, spring is set in the middle part of bearing pin 12 between the middle part of bearing pin 12 and axle sleeve 11, and positioned at bearing pin 12 and axle sleeve
In gap between 11；One end of spring is against the bottom of bearing pin 12, and the other end is against in the top inner wall of axle sleeve 11, makes spring bullet
Property is connected between bearing pin 12 and axle sleeve 11；The top of bearing pin 12 wears out the top of axle sleeve 11, and the top of bearing pin 12 is provided with top
Cap 13, top cap 13 can prevent the top of bearing pin 12 to be retracted in axle sleeve 11, may be simultaneously used for fastening splicing rope.Outside axle sleeve 11
There is screw thread on wall, nut 15 is installed for spinning, nut 15 will be installed during installation and be connected on the first swivel, so as to pass through
Axle sleeve 11 makes elastic positioning pin 1 be connected with the first swivel with the cooperation for installing nut 15, and bearing pin 12 passes through axle sleeve 11 installed in the
On one swivel, bearing pin 12 together can be rotated relative to the second swivel with the first swivel.It should be noted that the elasticity of this programme is determined
Position pin 1 is simultaneously limited in by spring and forms elastic connection between bearing pin 12 and axle sleeve 11 incessantly, for this programme, may be used also
Being other resilient elastic components 14 of tool.
Limiting plate 2 is arranged on the second swivel, and spacing hole 21 is offered on limiting plate 2, and spacing hole 21 is located at flexibly positioned
The lower section of a certain rotational orientation of pin 1, i.e., when elastic positioning pin 1 is rotated with the first swivel, can be in a certain position of rotary motion trace
Put relative with spacing hole 21；The aperture of spacing hole 21 is adapted with the external diameter of bearing pin 12, for making bearing pin 12 in the rotational orientation
Lower and spacing hole 21 forms pluggable connection, when bearing pin 12 is inserted in spacing hole 21, i.e., in the first swivel and the second swivel
Between form spacing.Because the stopping means of the present embodiment is used for medical bed, so the quantity of the spacing hole 21 on limiting plate 2 can
Being one：When two pieces of bed boards are relative is expanded to 180 °, bed board can only pass through bedstead horizontal support, when one of bed board phase
When certain angle is turned up for another piece of bed board, then limited with the cooperation of spacing hole 21 by the alignment pin of this position-limit mechanism
Position.
The quantity of spacing hole 21 can also be multiple, and multiple spacing holes 21 are respectively positioned at the different rotations of elastic positioning pin 1
The lower section in orientation, i.e., multiple spacing holes 21 the rotary motion trace of elastic positioning pin 1 routed underneath, the quantity and phase of spacing hole 21
Spacing between adjacent two spacing holes 21 can be decided according to the actual requirements, for example, can be that two spacing at two shown in Fig. 1
Corresponding angle of circumference turns to another spacing hole 21 for 90 degree, i.e. elastic positioning pin 1 from a spacing hole 21 between hole 21
When, bed board rotates accordingly 90 degree.
Because elastic positioning pin 1 and limiting plate 2 are separately mounted on two pieces of bed boards, in actual use, bed body is because being subject to
Pressure produces unavoidably elastic deformation, and this is easy for making the bearing pin 12 of elastic positioning pin 1 that relative dislocation occur with spacing hole 21, causes
During bearing pin 12 is inserted less than spacing hole 21, in this regard, the spacing hole 21 of the present embodiment is preferably elongated hole, even if so elastic positioning pin
There is certain changing of the relative positions in 1 bearing pin 12, still can drop in spacing hole 21 relative to spacing hole 21；It is more highly preferred to, it is long
The length direction in hole is preferably set to, the width of spacing hole 21 and the external diameter of bearing pin 12 vertical with the rotation direction of elastic positioning pin 1
It is adapted, had so both can guarantee that bearing pin 12 was inserted in spacing hole 21, bearing pin 12 is prevented from again and is sent out in spacing hole 21
Life is rocked, and which thereby enhances the stability of this position-limit mechanism.
Hinge axis 3 by fixed plate 5 be arranged on first swivel on, hinge axis 3 is connected with the bearing of fixed plate 5, hinge axis 3 with
First swivel is together rotated；Rope 7 is preferably steel wire rope, and one end of rope 7 is around the top for being connected on hinge axis 3, one end of rope 7
Frictional force that can be produced after solderless wrapped connection is fixed, and also directly can be fixed with hinge axis 3；The other end of rope 7 in a ring, can cover
The top of bearing pin 12 is connected on, the lower section of the top cap 13 at the top of bearing pin 12 is fastened on, one end that rope 7 is connected with hinge axis 3 is higher than
The one end being connected with bearing pin 12, can also arrange handle 4 on hinge axis 3, by the rotating hinge chain rivet 3 of handle 4；Certainly can also arrange
Motor is connected with hinge axis 3, then is equipped with corresponding control circuit, drives hinge axis 3 to rotate by remote-control motor, facilitates row
Move patient's operation of inconvenience.
The bearing pin 12 of elastic positioning pin to be made 1 is deviate from from spacing hole 21, and controllable hinge axis 3 is rotated in one direction,
The higher one end of rope 7 is wound up on hinge axis 3, while the relatively low one end of rope 7 pulls up bearing pin 12, makes bearing pin 12 from limit
Deviate from hole 21 position；When bearing pin 12 is deviate from from some position spacing hole 21 shifts to the spacing hole 21 of the next position, can pine
The lockup state of handle 4 on expense axle 12 or contact motor, the top of bearing pin 12 due to losing the pulling force effect of rope 7,
Extend downwardly from the presence of the elastic force of elastic component 14 and be against on limiting plate 2, subsequently on limiting plate 2 slide, bearing pin 12 with limit
Relative pressure is kept between the plate 2 of position, until running into the next spacing hole 21 in rotation direction, bearing pin 12 is further in elastic force
Stretch out under effect, it is spacing convenient to operation in being inserted into spacing hole 21.
Hinge axis 3 is preferably perpendicular to limiting plate 2 and arranges, and one end of hinge axis 3 is higher than limiting plate 2, and the other end is near spacing
The horizontal level of plate 2, the side edge of the ejection bed body that such handle 4 will not be excessive, and the plane of motion of handle 4 and first swivel
Plane of motion is coplanar or parallel, thus can avoid, because touching and caused handle 4 is rotated by mistake, increased the safety of this position-limit mechanism
Property.
Embodiment two
A kind of position-limit mechanism that the present embodiment two is provided, essentially identical with the structure of embodiment one, something in common is no longer gone to live in the household of one's in-laws on getting married
State, difference is：
Bearing 6 is provided with limiting plate 2, the first swivel is connected with the bearing 6, and the first swivel is rotated by the bearing 6 and connected
Limiting plate 2 is connected to, makes the first swivel indirectly be rotationally connected with the second swivel, so can farthest shorten elastic positioning pin
1 with the first swivel and the distance between the transit point of the second swivel, that is, shorten the radius that elastic positioning pin 1 is rotated.Due to
The radius of gyration of elastic positioning pin 1 shortens, and thus the spacing hole 21 when elastic positioning pin 1 by corresponding to a rotational orientation is rotated
During to spacing hole 21 corresponding to another rotational orientation, bigger rotational angle is obtained in that, for the entirety of position-limit mechanism
For, in the limited scope of limiting plate 2, can make the first swivel that the spacing position of greater angle difference is obtained relative to the second swivel
Put.
Embodiment three
A kind of position-limit mechanism that the present embodiment two is provided, essentially identical with the structure of embodiment two, something in common is no longer gone to live in the household of one's in-laws on getting married
State, difference is：
Elastic positioning pin 1, rope 7 and spacing hole 21 be correspondence be set to it is multiple, i.e., first swivel on install multiple
Elastic positioning pin 1, corresponding, the position on the limiting plate 2 corresponding to a certain rotational orientation of multiple elastic positioning pins 1 opens up many
Individual spacing hole 21, connects multiple ropes 7 between the bearing pin 12 and hinge axis 3 of multiple elastic positioning pins 1, and the one of multiple ropes 7
End is connected respectively with the bearing pin 12 of multiple elastic positioning pins 1, and the other end is around the top for being connected on hinge axis 3.When multiple elasticity are determined
When the bearing pin 12 of position pin 1 is inserted respectively in multiple spacing holes 21, the multiple spot limit between the first swivel and the second swivel can be realized
Position connection, it is spacing with single spacing hole 21 compared to by the bearing pin 12 of single alignment pin, it is prevented from using multiple spot is spacing
There is relative torsion between first swivel and the second swivel, increased the stability of this position-limit mechanism；In addition, multiple bearing pins 12
Using shear-stable ability is also enhanced on the whole, the reliability of this position-limit mechanism is improve.
Preferably, multiple elastic positioning pins 1 have the different size of radius of gyration relative to the described second swivel, i.e.,
Multiple elastic positioning pins 1 are different from the distance between the axis of rotation of the first swivel and the second swivel, corresponding multiple spacing holes
21 is also different from the distance between the axis of rotation of the first swivel and the second swivel.So each elastic positioning pin 1 is with first
When swivel is rotated, other spacing holes 21 in addition to the spacing hole 21 below own rotation orientation can be avoided such that it is able to realize
Make the bearing pin 12 of multiple elastic positioning pins 1 can be automatically inserted in the spacing hole 21 of next rotational orientation when rotating, and make machine
The operation of structure was both reliable, again convenient, and this position-limit mechanism simple structure, cheap, was easy to promote the use of.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of without departing from the technology of the present invention principle, some improvement and replacement can also be made, these improve and replace
Also should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of position-limit mechanism, spacing between the first swivel of connection and the second swivel for rotating, it is characterised in that to include
Elastic positioning pin (1), limiting plate (2), hinge axis (3) and rope (7)；
The elastic positioning pin (1) includes axle sleeve (11), bearing pin (12) and elastic component (14), and one end of the bearing pin (12) can stretch
Contracting be arranged in the axle sleeve (11), elastic component (14) elastic connection between the bearing pin (12) and axle sleeve (11), institute
State bearing pin (12) to turn installed in described first by the axle sleeve (11)；
The limiting plate (2) offers spacing hole (21), the limit on the described second swivel on the limiting plate (2)
Position hole (21) positioned at the lower section of the rotational orientation of the bearing pin (12), for making the bearing pin (12) with the spacing hole (21) shape
Into pluggable connection；
The hinge axis (3) is on the described first swivel；
One end of the rope (7) is wire-wrapped in the hinge axis (3), and the other end is connected with the other end of the bearing pin (12), institute
One end that rope (7) is connected with the hinge axis (3) is stated higher than the one end being connected with the bearing pin (12)；
The elastic positioning pin (1), rope (7) and spacing hole (21) correspond to be set to it is multiple；
The quantity of the spacing hole (21) is multiple, and multiple spacing holes (21) are respectively positioned at the elastic positioning pin (1)
The lower section of different rotational orientations.
2. position-limit mechanism according to claim 1, it is characterised in that each described elastic positioning pin (1) is relative to described
Second swivel has the different size of radius of gyration.
3. position-limit mechanism according to claim 1, it is characterised in that the limiting plate (2) is provided with bearing, described first
Swivel is rotationally connected with second swivel by the bearing.
4. position-limit mechanism according to claim 1, it is characterised in that have between the bearing pin (12) and the axle sleeve (11)
There is gap；The elastic component (14) is spring, and the spring housing is located at the bearing pin (12), and positioned at the bearing pin (12) and axle
In gap between set (11)；One end of the spring is connected with the bearing pin (12), and the other end is connected with the axle sleeve (11).
5. position-limit mechanism according to claim 1, it is characterised in that the hinge axis (3) is arranged on by fixed plate (5)
On first swivel, the hinge axis (3) is connected with the fixed plate (5) bearing.
6. position-limit mechanism according to claim 1, it is characterised in that the hinge axis (3) is provided with handle (4).
7. position-limit mechanism according to claim 1, it is characterised in that the hinge axis (3) is rotated by motor.
8. the position-limit mechanism according to any one of claim 1-7, it is characterised in that the spacing hole (21) is elongated hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510040733.2A CN104606011B (en) | 2015-01-27 | 2015-01-27 | Limiting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510040733.2A CN104606011B (en) | 2015-01-27 | 2015-01-27 | Limiting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104606011A CN104606011A (en) | 2015-05-13 |
| CN104606011B true CN104606011B (en) | 2017-05-03 |
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ID=53140845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510040733.2A Active CN104606011B (en) | 2015-01-27 | 2015-01-27 | Limiting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104606011B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105877233B (en) * | 2016-05-30 | 2018-12-07 | 杭州富阳锦丰纸业有限公司 | A kind of mounting structure of drawer Fast Installation ball guide |
| CN107888144A (en) * | 2017-12-15 | 2018-04-06 | 无锡优耐特能源科技有限公司 | A kind of small outdoor header box |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6216293B1 (en) * | 1999-04-20 | 2001-04-17 | Hill-Rom, Inc. | Fracture frame mounting apparatus |
| CN101481971B (en) * | 2008-01-07 | 2012-05-23 | 海尔集团公司 | Lower hinge of multi-side locating refrigerator door |
| US9173796B2 (en) * | 2013-02-05 | 2015-11-03 | Hill-Rom Services, Inc. | Bed with a powered width expansion wing with manual release |
| CN203423950U (en) * | 2013-07-05 | 2014-02-12 | 重庆博沃发动机配件制造有限公司 | Pull rod assembly of small rice transplanter |
| CN204484562U (en) * | 2015-01-27 | 2015-07-22 | 中国科学院苏州生物医学工程技术研究所 | Position-limit mechanism |
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| CN104606011A (en) | 2015-05-13 |
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