CN104523384B - The buckle structure of combined stretcher - Google Patents
The buckle structure of combined stretcher Download PDFInfo
- Publication number
- CN104523384B CN104523384B CN201410659574.XA CN201410659574A CN104523384B CN 104523384 B CN104523384 B CN 104523384B CN 201410659574 A CN201410659574 A CN 201410659574A CN 104523384 B CN104523384 B CN 104523384B
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- CN
- China
- Prior art keywords
- stretcher
- fixed via
- buckle structure
- bushing
- support member
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- 229920001971 elastomer Polymers 0.000 claims abstract description 34
- 239000000806 elastomer Substances 0.000 claims abstract description 34
- 238000009434 installation Methods 0.000 claims abstract description 16
- 230000001154 acute effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 206010058109 Hangnail Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Invalid Beds And Related Equipment (AREA)
Abstract
The buckle structure of combined stretcher, including stretcher rod and support member, the support member to be respectively arranged at two ends with structure identical and can include two elastomers being each extended over out from support member end both sides with the fixed via latch part that be connected of lock opened up on stretcher rod, wherein latch part.Bushing is provided with the fixed via, the bush inside is formed with and is available for latch part to insert the installation cavity installed;The end of two described elastomers is respectively equipped with the lock oblique angle extended to side, and described lock oblique angle matches corresponding fixation with the stress skewed slot opened up on the side wall of both sides stretcher rod at the top of fixed via respectively.The present invention provides a kind of simple structure, latches the buckle structure of combined stretcher that is firm, being easily assembled to.
Description
Technical field
The present invention relates to medical equipment field, particularly a kind of buckle structure of combined stretcher.
Background technology
At present, when bed sheet replacing is carried out to patient with severe symptoms and Related Nursing works, Combined stretcher is can be used to substitute many
Name nurse moves carrying to patient, so that the tenderness sense brought to patient when reducing carrying is while avoid conditions of patients from adding
Weight.And combined stretcher is easily portable storage and is applicable to narrow space place and uses.But, existing Combined stretcher
Connecting portion connection between two stretcher rods, the assembled belt to Combined stretcher carrys out certain difficulty, reduces making for Combined stretcher
Use efficiency.And the attachment structure of connecting portion and stretcher rod is complicated, be used for multiple times or heavier loads in the case of, the company of reducing
The stability of binding structure is so as to bring potential safety hazard.
The content of the invention
Defect it is an object of the invention to overcome prior art, there is provided a kind of simple structure, lock firmly, be easily assembled to
Combined stretcher buckle structure.
To achieve the above object, the utility model employs following technical scheme:
A kind of buckle structure of combined stretcher, including stretcher rod 1 and 1 ' and support member 2, the two ends point of the support member 2
It is not provided with that structure is identical and the fixed via 101 and 101 ' that can above be opened up with stretcher rod 1 and 1 ' latches the latch part 201 being connected
With 202, wherein latch part 201 includes two elastomers 21 and 22 each extended over out from the end both sides of support member 2.The fixation
Bushing 3 is provided with through hole 101, the bushing 3 is internally formed and is available for latch part 201 to insert the installation cavity 34 installed.It is described
Two elastomers 21 and 22 end be respectively equipped with to side extend lock oblique angle 211 and 221, described lock oblique angle
211 and 221 match with the stress skewed slot 11 and 12 that opens up on the side wall of the top both sides stretcher rod 1 of fixed via 101 respectively it is right
Should fix.
Further, the inwall of the bushing 3 is inclined-plane, and the section of bushing 3 height and the depth of section of fixed via 101
Match.
Further, the guiding rib 33 for separating installation cavity 34, described two are provided with the middle of described installation cavity 34
Elastomer 21 and 22 is separately mounted to the both sides of guiding rib 33.
Further, the extended line of the bottom surface 211a and 221a at described lock oblique angle 211 and 221 is formed with vertical direction
Lock angle beta and stress skewed slot 11 and 12 skewed slot surface 11a and 12a the stress angle α that is formed of extended line and vertical direction
It is acute angle.
Further, described lock angle beta is less than or equal to stress angle α.
Further, being respectively provided on two sides with for the bottom of the bushing 3 can be with the spacing fixation in edge of the bottom of fixed via 101
Limit buckle 31 and 32.
Further, the top stage of the bushing 3 is mounted with the step at the top of fixed via 101.
Further, the end of described two elastomers 21 and 22 be respectively equipped with to top extend for by support member 2 with
The dropout raised 212 and 222 that the dropout of stretcher rod 1 is separate.
In the elastomer and stretcher rod that the buckle structure of combined stretcher of the invention passes through support member two ends latch part
Bushing, realizes being connected by the easy stably combination of support member between stretcher rod, makes stretcher rod simple with support member attachment structure
And be easily assembled to, improve the service efficiency of Combined stretcher.Additionally, the lock oblique angle and stress skewed slot that pass through elastomer side
Coordinate and fix, improve the security that the stability and Combined stretcher of lock connection are used.
Brief description of the drawings
Fig. 1 is the profile of the buckle structure of combined stretcher of the invention;
Fig. 2 is the structural representation of support member of the present invention;
Fig. 3 is the structural representation of latch part of the present invention;
Fig. 4 is fixed via of the present invention and latch part disassembled form schematic diagram;
Fig. 5 is the profile of fixed via structure of the present invention;
Fig. 6 is the profile of bush structure of the present invention;
Fig. 7 is the specific embodiment structural perspective of stretcher rod of the present invention;
Fig. 8 is the structural representation of concrete application embodiment of the present invention.
Specific embodiment
Embodiments of the invention are given below in conjunction with accompanying drawing 1 to 8, the lock of combined stretcher of the invention is further illustrated
Structure specific embodiment.The buckle structure of combined stretcher of the invention is not limited to the following description.
The buckle structure of combined stretcher of the invention, including two stretcher rods 1 and 1 ' and at least two be arrangeding in parallel
The individual support member 2 for being arranged between two stretcher rods 1 and 1 ' and being fixedly connected with two stretcher rods 1 and 1 ' respectively, described branch
Support member 2 to be respectively arranged at two ends with structure identical and can be right with the fixed via 101 and 101 ' that opens up respectively on stretcher rod 1 and 1 '
The latch part 201 and 202 of connection should be latched.And bushing 3 is provided with fixed via 101, the bushing 3 has been internally formed and has been available for
The installation cavity 34 that the insertion of latch part 201 is installed.Mutually correspondence is locked respectively for fixed via 101 and 101 ' and latch part 201 and 202
Button is connected and forms the buckle structure of combined stretcher.
As shown in figure 1, by taking the connection buckle structure of one of stretcher rod 1 and support member 2 as an example, described support member 2
Latch part 201 include each extend over out two elastomers from the end both sides of support member 2, two described elastomers are specifically included
Left elastomer 21 and right elastomer 22, being offered on the stretcher rod 1 can install the fixed via 101 of bushing 3, the bushing 3
The installation cavity 34 of top and bottom opening and all round closure is formed in fixed via 101, is provided with fixed via
Bushing is not only easy to the installation and dismounting of support member, while played during the use of Combined stretcher delaying to buckle structure
Punching, reduces the degree of wear of buckle structure.Especially, the end of the left elastomer 21 is provided with the left lock for extending to the left
Oblique angle 211, the end of the right elastomer 22 is provided with the right lock oblique angle 221 for extending to the right, and described left lock is oblique
Angle 211 and right lock oblique angle 221 respectively with the left stress skewed slot that opens up on the side wall of the top both sides stretcher rod 1 of fixed via 101
11 and right stress skewed slot 12 match correspondence fixation.The support member for being provided with latch part by two ends between stretcher rod is fixedly connected,
Make attachment structure simple, while latch part is provided with two elastomers being easily installed when connection is latched, improve Combined stretcher
Service efficiency.Additionally, elastomer side is provided with the lock oblique angle for being matched with the stress skewed slot of fixed via and being set, lock is improve
The security that the stability and Combined stretcher of connection are used.
The structural representation of support member of the present invention 2 as shown in Figure 2, the lock that two ends of the support member 2 are respectively equipped with
The identical completely identical in structure fixed via 101 that can be above opened up with stretcher rod 1 and 1 ' respectively of the structure of buckle 201 and 202
With 101 ' mutually lock connections so as to form Combined stretcher bar connection buckle structure.Especially, the center section of support member 2 is wider than
The material that two ends and support member 2 are used can be for sufficiently resilient and intensity plastic material, the shape and structure of support member be carried
The weight capacity of support member high, and strengthen support member pliability using elastomeric material to be not only convenient for support member and stretcher rod
Assembling simultaneously improve patient using Combined stretcher when comfortableness.
Specifically as shown in figure 3, by taking the latch part 201 of support member 2 as an example, the He of left elastomer 21 of the latch part 201
Right elastomer 22 is symmetrically extended to diagonally forward respectively relative to the center line A of latch part 201, and left elastomer 21 and right elastomer
Elastic cavity 230 is formed between 22, described elastic cavity is used for two elastomers and is connected with fixed via formation lock
When give two enough elastic spaces of elastomer, be easy to latch part and fixed via lock to be connected.Especially, left elastomer 21
Left lock oblique angle 211 and right lock oblique angle 221, and the left lock are extended with the end of right elastomer 22 to side respectively
Two extended lines and Vertical Square of lower-left bottom surface 211a and bottom right bottom surface 221a corresponding to oblique angle 211 and right lock oblique angle 221
To two equal lock angle betas are formed respectively, the lock angle beta is acute angle.Lock angle beta is easy to latch oblique angle and stress for acute angle
Skewed slot lock connection, while making lock connect the stability that more fastening improves connection buckle structure.Additionally, left elastomer 21
And the end of right elastomer 22 is respectively equipped with that to extend the left dropout for for support member 2 and stretcher rod 1 to be threaded off separate to top convex
212 and right dropout raised 222 are played, and the left dropout raised 212 and right projection 222 of threading off are oblique with the left lock being correspondingly arranged
Left dropout cambered surface 212a and right dropout cambered surface 222a is respectively equipped between angle 211 and right lock oblique angle 221.Thread off raised and de-
Button cambered surface increased the active area that buckle structure applies active force when threading off, and make to apply active force to two elastomers manually
It is more light easy.
Fixed via of the present invention 101 as shown in Figure 4 and the disassembled form schematic diagram of latch part 201, described left stress skewed slot
11 and right stress skewed slot 12 be opened in being respectively symmetrically on the side wall of the stretcher rod 1 of the open top both sides of fixed via 101, a left side is received
Left skewed slot surface 11a and right skewed slot surface 12a corresponding to power skewed slot 11 and right stress skewed slot 12 can respectively with lower-left bottom surface
211a and bottom right bottom surface 221a cooperatively form lock and fix.And two extended lines of left inclined trough surface 11a and right inclined trough surface 12a with
Vertical direction forms two equal stress angle α respectively.Especially, described lock angle beta and stress angle α is acute angle and lock
Angle beta is less than or equal to stress angle α, and lock angle and stress angle are acute angle design makes stretcher rod with support member when latching fixed,
Lock angle and stress angle form hangnail buckle structure, prevent support member from being come off from the fixed via of stretcher rod in stress cunning
Go out, improve the security that the stability and Combined stretcher of buckle structure are used, while latching angle and stress angle angular dimension
Proper Match, it is ensured that stretcher rod and support member are bearing in the case that active force gradually increases, to make lock angle mutual with stress angle
Angle degree of blocking strengthens.The weight capacity of Combined stretcher is not only increased, while improve stretcher stability.Additionally, described solid
The inwall of bushing 3 for determining to be provided with through hole 101 is inclined-plane, and the section of bushing 3 height and the depth of section phase of fixed via 101
Matching.So that the bottom opening of fixed via 101 is more than open top, and the inclined design of the bushing inwall of fixed via 101 makes
The latch part of support member is easier to complete to install with fixed via, improves the service efficiency of Combined stretcher.
The specific embodiment of fixed via of the present invention 101 as shown in Figure 5 and Figure 6.It is provided with described fixed via 101
The bushing 3 matched with fixed via 101, the bushing 3 in fixed via 101 has been internally formed and has been available for latch part 201
Insert the installation cavity 34 installed.The bushing being provided with fixed via is not only easy to the installation and dismounting of support member, while in group
The buffering to buckle structure is played during the use for closing stretcher, the degree of wear of buckle structure is reduced, it is contemplated that
In order that two elastomers of support member 2 can pass through bushing 3 after inwardly extruding, the thickness of the support member 2 should be less than lining
The width and bushing 3 for covering 3 installation cavities 34 can be made by with elastically-deformable plastic material.Additionally, the inwall of bushing 3
Cross sectional shape be isosceles trapezoid, the isosceles trapezoid that is shaped as of bushing makes buckle structure more stable, in the use of Combined stretcher
During be not susceptible to rock.
Especially, the guiding rib 33 for separating installation cavity 34, described two are provided with the middle of described installation cavity 34
Elastomer is separately mounted to the both sides of guiding rib 33, the appropriate cooperation between guiding rib and two elastomers of support member at opening
It is more smooth when being conducive to support member and stretcher rod to separate, improve the dismounting speed of buckle structure.Meanwhile, the bottom of the bushing 3
Being respectively provided on two sides with for portion can be pushed up with the limit buckle 31 and 32 of the spacing fixation in edge of the bottom of fixed via 101, and bushing 3
Portion's step can be mounted with the step at the top of fixed via 101.The limit buckle and limited step at sleeve and top with it is solid
The edge step for determining via bottoms and top coordinates the stabilization installation for being easy to bushing and fixed via, improves packaging efficiency.This
Invention bushing 3 is not limited only to described in above example with the mounting means of fixed via 101, and when the selection of stretcher rod 1 is plastics
The limit buckle 31 and 32 in bushing 3 can be cancelled during class material, combined fixed with welding procedure or directly cancelled bushing 3, will
The interior wall construction of bushing 3 is directly designed into stretcher rod 1 and forms a structure for entirety.
The embodiment of concrete application of the present invention as shown in Figure 8, the buckle structure of combined stretcher of the invention can be with mattress 4
Use cooperatively, the stretcher rod 1 and 1 ' is symmetrically distributed in the both sides of mattress 4 for being in inflated condition, and support member 2 passes through mattress
In the gap between mutual air bag in 4, the stability that multiple support members improve Combined stretcher is provided between stretcher rod, formd
The special stretcher of patient can be steadily lifted without sheet, mattress.Additionally, stretcher hole is correspondingly arranged with connecting latch mechanism, improve
The joint efficiency of Combined stretcher latching device.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert
Specific implementation of the invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should be all considered as belonging to of the invention
Protection domain.
Claims (8)
1. a kind of buckle structure of combined stretcher, including stretcher rod (1,1 ') and support member (2), it is characterised in that:The branch
Support member (2) to be respectively arranged at two ends with structure identical and can be locked with the fixed via (101,101 ') that opens up on stretcher rod (1,1 ')
Detain connection latch part (201,202), wherein latch part (201) including each extended over out from support member (2) end both sides two
Individual elastomer (21,22);
Bushing (3) is provided with the fixed via (101), the bushing (3) has been internally formed and has been available for latch part (201) to insert peace
The installation cavity (34) of dress, the end of described two elastomers (21,22) is respectively equipped with the lock oblique angle extended to side
(211,221), described lock oblique angle (211,221) respectively with the side wall of fixed via (101) top both sides stretcher rod (1) on
The stress skewed slot (11,12) for opening up matches and corresponds to fixation.
2. the buckle structure of combined stretcher according to claim 1, it is characterised in that:The inwall of the bushing (3) is
Inclined-plane, and the height in bushing (3) section matches with fixed via (101) depth of section.
3. the buckle structure of combined stretcher according to claim 1, it is characterised in that:In described installation cavity (34)
Between be provided with the guiding rib (33) for separating installation cavity (34), described two elastomers (21,22) are separately mounted to guiding rib
(33) both sides.
4. the buckle structure of combined stretcher according to claim 1, it is characterised in that:Described lock oblique angle (211,
221) lock angle beta that the extended line and vertical direction of bottom surface (211a, 221a) are formed and stress skewed slot (11,12) it is oblique
The stress angle α that the extended line and vertical direction of rooved face (11a, 12a) are formed is acute angle.
5. the buckle structure of combined stretcher according to claim 4, it is characterised in that:Described lock angle beta be less than or
Equal to stress angle α.
6. the buckle structure of combined stretcher according to claim 1, it is characterised in that:The two of bushing (3) bottom
Side is respectively equipped with can be with the limit buckle (31,32) of the spacing fixation in edge of fixed via (101) bottom.
7. the buckle structure of combined stretcher according to claim 6, it is characterised in that:Bushing (3) top stage
It is mounted with the step at the top of fixed via (101).
8. the buckle structure of combined stretcher according to claim 1, it is characterised in that:Described two elastomers (21,
22) end be respectively equipped with extend to top for support member (2) and stretcher rod (1) to be threaded off separate dropout projection (212,
222)。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201410659574.XA CN104523384B (en) | 2014-11-18 | 2014-11-18 | The buckle structure of combined stretcher |
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CN201410659574.XA CN104523384B (en) | 2014-11-18 | 2014-11-18 | The buckle structure of combined stretcher |
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CN104523384A CN104523384A (en) | 2015-04-22 |
CN104523384B true CN104523384B (en) | 2017-06-13 |
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CN201410659574.XA Active CN104523384B (en) | 2014-11-18 | 2014-11-18 | The buckle structure of combined stretcher |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105030428B (en) * | 2015-07-09 | 2017-12-12 | 广州铁路职业技术学院 | Stretcher |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB163603A (en) * | 1920-06-14 | 1921-05-26 | Allen Herbert | A collapsible ambulance stretcher |
GB568943A (en) * | 1943-07-21 | 1945-04-26 | William Leonard Pollock | Improvements in stretchers |
CN201888883U (en) * | 2010-11-19 | 2011-07-06 | 刘友红 | Combined stretcher for patient transportation |
CN103800152A (en) * | 2014-02-27 | 2014-05-21 | 林黎明 | Multifunctional mattress |
CN204319088U (en) * | 2014-11-18 | 2015-05-13 | 林恒 | The buckle structure of combined stretcher |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19546328B4 (en) * | 1995-12-12 | 2007-12-13 | Robert Bosch Gmbh | Hand tool machine with a rotatable handle |
CN2435600Y (en) * | 2000-06-23 | 2001-06-20 | 路达(厦门)工业有限公司 | Fixing means for handle of water tap |
CN202515916U (en) * | 2012-03-26 | 2012-11-07 | 南昌市青云医疗器械厂 | Breathable porous lining jacket for bed surface of medical bed |
CN202563815U (en) * | 2012-05-10 | 2012-11-28 | 浙江顺舟电力高技术有限公司 | Novel electric energy meter seal |
CN203131217U (en) * | 2012-12-24 | 2013-08-14 | 宁波远景汽车零部件有限公司 | Guide tube clamp |
CN103807165B (en) * | 2014-02-21 | 2016-02-10 | 大庆东达节能技术开发服务有限公司 | Safety type screw pump side clamp guard shield |
-
2014
- 2014-11-18 CN CN201410659574.XA patent/CN104523384B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB163603A (en) * | 1920-06-14 | 1921-05-26 | Allen Herbert | A collapsible ambulance stretcher |
GB568943A (en) * | 1943-07-21 | 1945-04-26 | William Leonard Pollock | Improvements in stretchers |
CN201888883U (en) * | 2010-11-19 | 2011-07-06 | 刘友红 | Combined stretcher for patient transportation |
CN103800152A (en) * | 2014-02-27 | 2014-05-21 | 林黎明 | Multifunctional mattress |
CN204319088U (en) * | 2014-11-18 | 2015-05-13 | 林恒 | The buckle structure of combined stretcher |
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CN104523384A (en) | 2015-04-22 |
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Effective date of registration: 20200519 Address after: 201611 Room 201, 2 / F, building 7, building 7, building 8-9, No. 505, Shuhai Road, Songjiang District, Shanghai Patentee after: SHANGHAI GOOD FAITH ICEST Co.,Ltd. Address before: 201611 No. 505 Book Road, Shanghai, Songjiang District Patentee before: Lin Heng |