CN205434259U - Backrest angle is adjustable and antiwear for medical treatment chair - Google Patents
Backrest angle is adjustable and antiwear for medical treatment chair Download PDFInfo
- Publication number
- CN205434259U CN205434259U CN201521092159.7U CN201521092159U CN205434259U CN 205434259 U CN205434259 U CN 205434259U CN 201521092159 U CN201521092159 U CN 201521092159U CN 205434259 U CN205434259 U CN 205434259U
- Authority
- CN
- China
- Prior art keywords
- backrest
- gear
- slide
- guide rod
- power
- Prior art date
- 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
Links
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model provides a backrest angle is adjustable and antiwear for medical treatment chair, includes backrest components (3) and base subassembly (4), backrest components (3) including backrest bottom board (31) and through back spring (43) with back panel (421) that backrest bottom board (31) are connected, rotationally support on fixed axle (41) on base support (40) through floor driving gear (311) and panel driving gear (42) respectively backrest bottom board (31) and back panel (421), floor driving gear (311) are by dynamic adjustment gear (37) with worm wheel (371) coaxial coupling meshing and power drive, worm wheel (371) are by worm (372) meshing and power drive with the motor dynamic hookup.
Description
Technical field
This utility model relates to medical machinery field, and especially a kind of backrest angle is adjustable and antiwear medical chair.
Background technology
In the medical field, it is often necessary to use the operation chair of some treatment chairs, such as some dentistry or ophthalmology etc..The backrest angle of these medical chairs generally requires the most adjustable, adjusts needs with the angles and positions being adapted in therapeutic process.
In some current medical chairs, the adjustment of backrest angle is often through power drive, and such as motor drives, and realizes.But, during using, generally require and the therapentic part of patient slowly adjusted with manually adjusting, to meet doctor's operation technique over the course for the treatment of or to observe needs.This needs to be provided with while power adjusts to manually adjust function.Therefore, power the dynamical system compatibility adjusting and manually adjusting and arranging of being independent of each other, arrange and bring difficulty often to the structure of whole medical chair and transmission.And multiple autonomous system is the most intricately set and easily increases manufacturing cost, and increase the difficulty of follow-up maintenance.
Utility model content
The purpose of this utility model is to provide a kind of backrest angle adjustable and antiwear medical chair, and it can overcome defect of the prior art.
Adjustable and the antiwear medical chair according to a kind of backrest angle of the present utility model, including backrest module and base assembly, described backrest module includes backrest base plate and the back panel being connected by backrest spring with described backrest base plate, on the fixing axle that described backrest base plate and back panel are rotatably supported on base support by backplane drive gear and panel driving gear respectively, described backplane drive gear is adjusted gear by the power coaxially connected with worm gear and engages and power drive, and described worm gear is by the worm engaging coupled with motor power power drive；nullDescribed panel driving gear is engaged by the tooth-strip part on the upper side of inner thread sleeve and drives，Described inner thread sleeve has the screw flight manually adjusting wheel to coordinate with being connected and is driven by it and can move left and right in the chute on movable slide，Described screw rod is rotatably mounted on described movable slide by the bearing assembly of described movable slide end，Described movable slide can slide up and down in the slip cavity of described base support bottom and and described base support between be provided with top pressure base spring，It is provided integrally with vertical drive division at the other end of described movable slide，The upper end of described vertical drive division is provided with through hole and is driven up and down by described rack slide to be slidably matched with the driving cross bar on the rack slide that can be engaged by described power adjustment gear and drive thus slide up and down on vertical guide rod，So that described movable slide slides to make described tooth-strip part engage with described panel driving Gear Contact or be disengaged from respectively in described slip cavity up or down，Wherein，The lower end of described vertical guide rod can horizontally slip in the guide rod chute on described base support and be provided with the protuberance stretched out towards described vertical drive division，The lower end of described vertical guide rod is pressed so that described protuberance top is pressed on the side of described vertical drive division by the guide rod top pressure spring top being pressed on described base support in the side relative with described protuberance，Inclined plane groove it is additionally provided with in order to be moved down into so that when described tooth-strip part is disengaged from described panel driving gear, wedge-shaped part with described protuberance end engages at described movable slide on the described side of described vertical drive division，And make described vertical guide rod drive described rack slide to move so that the tooth bar of described rack slide adjusts gear with described power and is disengaged from towards described vertical drive division upon engagement，The wedge-shaped part surface of described protuberance end is provided with anti-abrasion pad，Described anti-abrasion pad is elastomeric material to be made to coordinate inaccurate in order to producing abrasion with described inclined plane groove after preventing the wedge-shaped part of described protuberance end from coordinating for a long time，Cause described vertical guide rod can not accurately be held in place.
Pass through such scheme, owing to being provided with the screw drive assembly utilizing hand wheel to drive, it enables to rack member and moves left and right, thus drives the change in angular position of the panel backrest of backrest, it is possible to utilize angle position and the pace of change manually and accurately controlling backrest.And, utilize and drive the rack sleeve parts that can engage with little gear and can depart from, it can make the inner thread sleeve of described manual actuation band tooth bar move downward in the starting stage that power adjustment drives and depart from engaging of the driving gear with back panel, adjusts the resting state of handwheel so that do not affect when power drive adjusts backrest angle or is not interfered by this adjustment handwheel；And after the tooth bar associated by handwheel and respective gears disengage, power drive wheel and rack slide block is disengaged from, so that rack slide does not affect the operation of described power driven gear by the recess that arranges on vertical portion.
Owing to the power source (motor) controlling to be adjusted by power backrest angle of the engagement/disengagement of the rack and pinion of manual association drives in the lump, thus reduce equipment cost and be easy to plant maintenance.Whole medical chair stable easy and simple to handle reliably.
Accompanying drawing explanation
Fig. 1 is that a kind of backrest angle of the present utility model is adjustable and the overall structure schematic diagram of antiwear medical chair.
Detailed description of the invention
Below in conjunction with Fig. 1, this utility model is described in detail.
Backrest angle according to embodiment is adjustable and antiwear medical chair, including backrest module 3 and base assembly 4, described backrest module 3 includes backrest base plate 31 and the back panel 421 being connected by backrest spring 43 with described backrest base plate 31, described backrest base plate 31 and back panel 421 are rotatably supported on the fixing axle 41 on base support 40 by backplane drive gear 311 and panel driving gear 42 respectively, described backplane drive gear 311 is adjusted gear 37 by the power coaxially connected with worm gear 371 and engages and power drive, described worm gear 371 is engaged and power drive by the worm screw 372 coupled with motor power；nullDescribed panel driving gear 42 is engaged by the tooth-strip part on the upper side of inner thread sleeve 38 and drives，Described inner thread sleeve 38 manually adjusts screw rod 45 threaded engagement of wheel 451 with being connected to have and is driven by it and can move left and right in the chute on movable slide 39，Described screw rod 45 is rotatably mounted on described movable slide 39 by the bearing assembly 450 of described movable slide 39 end，Described movable slide 39 can slide up and down in the slip cavity 400 of described base support 40 bottom and and described base support 40 between be provided with top pressure base spring 30，Vertical drive division 34 it is provided integrally with at the other end of described movable slide 39，The upper end of described vertical drive division 34 is provided with through hole and is driven by described rack slide about 33 to be slidably matched with the driving cross bar 331 on the rack slide 33 that can be engaged by described power adjustment gear 37 and drive thus slide up and down on vertical guide rod 35，So that described movable slide 39 slides to make described tooth-strip part contact engagement with described panel driving gear 42 or be disengaged from respectively in described slip cavity 400 up or down，Wherein，The lower end of described vertical guide rod 35 can horizontally slip in the guide rod chute 350 on described base support 40 and be provided with the protuberance 351 stretched out towards described vertical drive division 34，The lower end of described vertical guide rod 35 is pushed up pressure in the side relative with described protuberance 351 by the guide rod top pressure spring 36 being pressed on described base support 40 so that described protuberance 351 top is pressed on the side of described vertical drive division 34，Inclined plane groove 341 it is additionally provided with in order to be moved down into so that when described tooth-strip part is disengaged from described panel driving gear 42, wedge-shaped part with described protuberance 351 end engages at described movable slide 39 on the described side of described vertical drive division 34，And make described vertical guide rod 35 drive described rack slide 33 to move so that the tooth bar of described rack slide 33 adjusts gear 37 with described power and is disengaged from towards described vertical drive division 34 upon engagement，The wedge-shaped part surface of described protuberance 351 end is provided with anti-abrasion pad 3510，Described anti-abrasion pad 3510 makes to coordinate inaccurate for elastomeric material in order to produce abrasion after preventing the wedge-shaped part of described protuberance 351 end from coordinating for a long time with described inclined plane groove 341，Cause described vertical guide rod 35 can not accurately be held in place.
Valuably, wherein, described backrest base plate 31 is for using when coarse adjustment backrest angle, and described back panel 421 is for using when accurate adjustment backrest angle.
Valuably, wherein, described in manually adjust wheel 451 upwards pull so that described tooth-strip part again engage with described backplane drive gear 311 time, electricity under described motor, and the tooth bar of described rack slide 33 and described power adjustment gear 37 engages again.
Owing to being provided with the screw drive assembly utilizing hand wheel to drive, it enables to rack member and moves left and right, thus drives the change in angular position of the panel backrest of backrest, it is possible to utilize angle position and the pace of change manually and accurately controlling backrest.And, utilize and drive the rack sleeve parts that can engage with little gear and can depart from, it can make the inner thread sleeve of described manual actuation band tooth bar move downward in the starting stage that power adjustment drives and depart from engaging of the driving gear with back panel, adjusts the resting state of handwheel so that do not affect when power drive adjusts backrest angle or is not interfered by this adjustment handwheel；And after the tooth bar associated by handwheel and respective gears disengage, power drive wheel and rack slide block is disengaged from, so that rack slide does not affect the operation of described power driven gear by the recess that arranges on vertical portion.
By with upper type, those skilled in the art can make various change according to mode of operation in the range of this utility model.
Claims (3)
1. a backrest angle is adjustable and antiwear medical chair, including backrest module (3) and base assembly (4), described backrest module (3) includes backrest base plate (31) and the back panel (421) being connected by backrest spring (43) with described backrest base plate (31), described backrest base plate (31) and back panel (421) are rotatably supported on the fixing axle (41) on base support (40) by backplane drive gear (311) and panel driving gear (42) respectively, described backplane drive gear (311) is adjusted gear (37) by the power coaxially connected with worm gear (371) and engages and power drive, described worm gear (371) is engaged and power drive by the worm screw (372) coupled with motor power；nullDescribed panel driving gear (42) is engaged by the tooth-strip part on the upper side of inner thread sleeve (38) and drives，Described inner thread sleeve (38) manually adjusts screw rod (45) threaded engagement of wheel (451) with being connected to have and is driven by it and can move left and right in the chute on movable slide (39)，Described screw rod (45) is rotatably mounted on described movable slide (39) by the bearing assembly (450) of described movable slide (39) end，Described movable slide (39) can slide up and down in the slip cavity (400) of described base support (40) bottom and and described base support (40) between be provided with top pressure base spring (30)，It is provided integrally with vertical drive division (34) at the other end of described movable slide (39)，The upper end of described vertical drive division (34) is provided with through hole and is driven up and down by described rack slide (33) to be slidably matched with the driving cross bar (331) on the rack slide (33) that can be engaged by described power adjustment gear (37) and drive thus slide up and down on vertical guide rod (35)，So that described movable slide (39) is slided to make described tooth-strip part contact engagement with described panel driving gear (42) or be disengaged from respectively in described slip cavity (400) up or down，Wherein，The lower end of described vertical guide rod (35) can horizontally slip in the guide rod chute (350) on described base support (40) and be provided with the protuberance (351) stretched out towards described vertical drive division (34)，The lower end of described vertical guide rod (35) is pressed so that described protuberance (351) top is pressed on the side of described vertical drive division (34) by guide rod top pressure spring (36) top being pressed on described base support (40) in the side relative with described protuberance (351)，Inclined plane groove (341) it is additionally provided with in order to be moved down into so that when described tooth-strip part is disengaged from described panel driving gear (42), wedge-shaped part with described protuberance (351) end engages described movable slide (39) on the described side of described vertical drive division (34)，And make described vertical guide rod (35) drive described rack slide (33) to move so that the tooth bar of described rack slide (33) adjusts gear (37) with described power and is disengaged from towards described vertical drive division (34) upon engagement，The wedge-shaped part surface of described protuberance (351) end is provided with anti-abrasion pad (3510)，Described anti-abrasion pad (3510) is elastomeric material to be made to coordinate inaccurate in order to producing abrasion with described inclined plane groove (341) after preventing the wedge-shaped part of described protuberance (351) end from coordinating for a long time，Cause described vertical guide rod (35) can not accurately be held in place.
2. backrest angle as claimed in claim 1 is adjustable and antiwear medical chair, and wherein, described backrest base plate (31) is for using when coarse adjustment backrest angle, and described back panel (421) is for using when accurate adjustment backrest angle.
3. backrest angle as claimed in claim 1 or 2 is adjustable and antiwear medical chair, wherein, described manually adjust wheel (451) upwards pull so that described tooth-strip part again engage with described backplane drive gear (311) time, electricity under described motor, and the tooth bar of described rack slide (33) and described power adjustment gear (37) engages again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521092159.7U CN205434259U (en) | 2015-12-25 | 2015-12-25 | Backrest angle is adjustable and antiwear for medical treatment chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521092159.7U CN205434259U (en) | 2015-12-25 | 2015-12-25 | Backrest angle is adjustable and antiwear for medical treatment chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205434259U true CN205434259U (en) | 2016-08-10 |
Family
ID=56586209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521092159.7U Expired - Fee Related CN205434259U (en) | 2015-12-25 | 2015-12-25 | Backrest angle is adjustable and antiwear for medical treatment chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205434259U (en) |
-
2015
- 2015-12-25 CN CN201521092159.7U patent/CN205434259U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205548920U (en) | Backrest angle is adjustable and take chair for medical treatment of gyro wheel | |
| US10660808B2 (en) | Nursing bed | |
| CN205459634U (en) | Backrest angle adjustable chair for medical treatment | |
| CN205459664U (en) | Backrest angle is adjustable and easy slip and wear resistant for medical treatment chair | |
| CN205459665U (en) | Backrest angle is adjustable and move stable chair for medical treatment | |
| CN205434260U (en) | Backrest angle is adjustable and take chair for medical treatment of slide rail | |
| CN205515422U (en) | Backrest angle is adjustable and easy gliding for medical treatment chair | |
| CN205515423U (en) | Backrest angle is adjustable and convenient chair for medical treatment that removes | |
| CN205434257U (en) | Backrest angle is adjustable and chair for medical treatment of tape light | |
| CN205459663U (en) | Backrest angle adjustable improved generation chair for medical treatment | |
| CN105411804A (en) | Variable-speed medical chair with angle-adjustable backrest | |
| CN205434259U (en) | Backrest angle is adjustable and antiwear for medical treatment chair | |
| CN205434258U (en) | Adjustable and convenient chair for medical treatment of backrest angle | |
| CN205515424U (en) | Backrest angle is adjustable and easy operation's chair for medical treatment | |
| CN105534675A (en) | Medical chair adjustable in backrest angle and stable in operation | |
| CN105434139A (en) | Medical chair with adjustable angle of backrest | |
| CN105380769A (en) | Backrest-angle-adjustable medical chair controlled by sensor | |
| CN105411801A (en) | Backrest-angle-adjustable medical chair with sliding rails | |
| CN105411800A (en) | Backrest-angle-adjustable medical chair convenient to use | |
| CN205494300U (en) | Backrest angle is adjustable and take chair for medical treatment of spacing warning light | |
| CN105395337A (en) | Novel medical-treatment chair with backrest angle adjustable | |
| CN105362029A (en) | Medical chair provided with indication lamp and anti-slip castors and allowing angle of backrest to be adjusted | |
| CN105560007A (en) | Improved medical treatment chair with adjustable backrest angle | |
| CN105616098A (en) | Medical chair allowing angle of backrest to be adjusted and preventing abrasion | |
| CN105616099A (en) | Intelligent medical chair allowing angle of backrest to be adjusted |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20161225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |