CN114028149A - Electric chair rotary positioning device - Google Patents
Electric chair rotary positioning device Download PDFInfo
- Publication number
- CN114028149A CN114028149A CN202111320736.3A CN202111320736A CN114028149A CN 114028149 A CN114028149 A CN 114028149A CN 202111320736 A CN202111320736 A CN 202111320736A CN 114028149 A CN114028149 A CN 114028149A
- Authority
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- China
- Prior art keywords
- mounting plate
- mounting panel
- hand brake
- bearing
- positioning
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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.)
- Pending
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- 125000006850 spacer group Chemical group 0.000 claims description 6
- 238000004804 winding Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 7
- 239000011324 bead Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000968 medical method and process Methods 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
- A61G15/02—Chairs with means to adjust position of patient; Controls therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
- A61G15/10—Parts, details or accessories
Abstract
The invention discloses a rotary positioning device of an electric chair, which comprises a rotary component and a hand brake component, wherein the rotary component comprises a first mounting plate, a second mounting plate and a slewing bearing, the slewing bearing is positioned between the first mounting plate and the second mounting plate and is respectively connected with the first mounting plate and the second mounting plate, the first mounting plate is rotatably connected on the second mounting plate through the slewing bearing, a positioning block is arranged on the first mounting plate, a positioning hole is arranged on the slewing bearing, the positioning block is arranged opposite to the positioning hole, a limiting pin is arranged on the second mounting plate, a bayonet lock is arranged on the first mounting plate, the limiting pin is arranged opposite to the bayonet lock, and the hand brake component is arranged opposite to the slewing bearing. The invention has compact structure and high bearing performance, can realize the positioning of specific angle and any angle, simultaneously limits the stroke of the rotation angle and reduces the winding of electric wires.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a rotary positioning device of an electric chair.
Background
An electric medical chair is a medical instrument which is commonly used in pathological examination or operation. The electric medical chair generally has a swivel function and is realized by providing a swivel structure between a chair base and a chair body. The existing electric medical chair mainly has two schemes, one scheme is realized by adopting a ball turntable, and the structure of the electric medical chair is similar to that of a glass turntable of a dining table; and the other is to adopt a sleeve to realize rotation, and utilize additional devices on the inner sleeve wall and the outer sleeve wall to realize brake positioning.
The existing electric medical chair has the following technical defects that 1, the ball turntable is formed by punching a thin steel plate, the bearing capacity is generally not more than 100kg, and the ball turntable fails after the patient is in a large size or is used for a long time, so that the electric medical chair cannot be normally used; 2. the structure of the sleeve is overstaffed, so that the whole space from the chair surface to the base is often occupied, and the integration of the electric medical chair is not facilitated; 3. the chair body and the chair base are not positioned at an angle and cannot be accurately positioned to an initial position or a designated position; 4. the rotation angle of the chair body has no stroke limitation, and the chair body is easy to be wound with wires of other medical instruments in the process of examination or operation, so that the normal medical process is influenced.
Disclosure of Invention
In order to solve the problems, the technical scheme provided by the invention is as follows:
the utility model provides an electric chair rotational positioning device, includes rotating assembly and manual brake subassembly, rotating assembly includes first mounting panel, second mounting panel and slewing bearing, slewing bearing is located first mounting panel with between the second mounting panel and respectively with first mounting panel with the second mounting panel is connected, first mounting panel passes through slewing bearing swivelling joint and is in on the second mounting panel, be provided with the locating piece on the first mounting panel, the last locating hole that is provided with of slewing bearing, the locating piece with the locating hole sets up relatively, be provided with the spacer pin on the second mounting panel, be provided with the bayonet lock on the first mounting panel, the spacer pin with the bayonet lock sets up relatively, the manual brake subassembly with the slewing bearing sets up relatively.
The invention is further provided with an installation cavity on the first installation plate, fixed blocks are arranged at two ends in the installation cavity, the bayonet lock is positioned between the two fixed blocks, connecting columns are arranged on the side surfaces of the bayonet lock close to the fixed blocks, and limiting springs are arranged between the connecting columns and the fixed blocks. The fixed block is used for avoiding bayonet lock and spacing spring to lose the cooperation to spacing spring's location, makes the bayonet lock can connect on first mounting panel steadily.
The invention is further provided that the side surface of the bayonet close to the slewing bearing is provided with a pin column, and the limiting pin is positioned on a path of the pin column rotating along with the first mounting plate. The rotation angle between the first mounting panel and the second mounting panel is restricted to the round pin post, avoids unrestricted rotation between first mounting panel and the second mounting panel.
The invention is further arranged such that the inner bearing of the slewing bearing is fixed to the first mounting plate and the outer bearing of the slewing bearing is fixed to the second mounting plate.
The invention is further provided with a top bead arranged on the positioning block, the positioning hole is positioned on the outer side wall of the outer bearing, and the top bead is arranged opposite to the positioning hole.
The positioning device is further provided with three positioning blocks, the adjacent positioning blocks are arranged at intervals of 90 degrees, the number of the positioning holes is four, and the adjacent positioning holes are arranged at intervals of 90 degrees. And the arrangement of one less positioning block is to reserve an installation space for the hand brake component.
The hand brake assembly further comprises a hand brake support, an eccentric wheel, a handle, an eccentric wheel rotating shaft and a sliding frame, wherein the eccentric wheel rotating shaft is connected to the hand brake support, the eccentric wheel is connected to the eccentric wheel rotating shaft, the handle is connected with the eccentric wheel, the sliding frame is movably connected to the hand brake support, a brake shoe is arranged on one side, close to the slewing bearing, of the sliding frame, a bearing surface is arranged on the other side of the sliding frame, and the bearing surface is arranged opposite to the eccentric wheel. The brake shoe is tightly attached to or far away from the slewing bearing by the action of the eccentric wheel on the sliding frame.
The invention is further provided that the sliding frame is provided with a guide post, the guide post is provided with a hand brake return spring, the hand brake support is provided with a box type sliding block, the guide post is connected with the box type sliding block, and the hand brake return spring is positioned between the box type sliding block and the bearing surface.
The invention is further configured such that the eccentric comprises a short axial surface and a long axial surface, the short axial surface and the long axial surface being disposed opposite to the bearing surface, respectively.
The hand brake bracket is further arranged to be fixed on one side of the first mounting plate, and the hand brake bracket and the positioning block are arranged at an interval of 90 degrees.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
1. compared with the prior art, the rotary positioning device has the advantages that the structure is compact, the rotary support is used, the bearing performance is higher, the installation of the base and the chair seat is convenient, the structure is compact, the bearing performance is high, the whole thickness is small, and the structure is incomparable with the structure of a ball turntable and a sleeve in the prior art.
2. The positioning of the rotary positioning device to specific angles including +90 degrees, -90 degrees, +180 degrees and-180 degrees is realized through the matching of the ejector balls on the positioning blocks and the positioning holes on the slewing bearing, the use requirements of the medical electric chair are met, and the patient can be observed by a doctor conveniently from the side face.
3. Realize first mounting panel spacing for the rotation angle of second mounting panel through setting up spacer pin and bayonet lock, when taking place 180 degrees clockwise and anticlockwise rotatory, the spacer pin is touch to the round pin post, makes the seat unable continuation rotatory, plays the effect of restriction rotatory stroke, and utilizes spacing spring to cushion, avoids the rigidity striking, and the chair rotation can slowly be stopped, gives the better experience of disease, can not take place the winding problem of electric wire moreover.
4. The hand brake assembly is arranged to be positioned at any angle, the long shaft of the eccentric wheel acts on the bearing surface through the operating handle, the sliding frame moves towards the slewing bearing, and the brake shoe is tightly attached to the outer bearing of the slewing bearing, so that the chair seat can be fixed at any angle.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention.
FIG. 2 is a perspective view of a rotating assembly according to an embodiment of the present invention.
Fig. 3 is a bottom view of a rotating assembly according to an embodiment of the present invention.
FIG. 4 is a side view of a rotating assembly according to an embodiment of the present invention.
FIG. 5 is a rear view of a rotating assembly according to an embodiment of the present invention.
FIG. 6 is a perspective view of a handbrake assembly in accordance with an embodiment of the present invention.
Fig. 7 is a schematic view of the hand brake assembly according to the embodiment of the invention when the hand brake assembly is tightened.
FIG. 8 is a schematic view of the handbrake assembly when released in accordance with an embodiment of the present invention.
Detailed Description
For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, integrally connected, or detachably connected; either mechanically or electrically, or internally communicating two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art will understand the specific meanings of the above terms according to specific situations.
With reference to fig. 1-8, the technical solution of the present invention is an electric chair rotation positioning device, including a rotation assembly a and a hand brake assembly B, where the rotation assembly a includes a first mounting plate a1, a second mounting plate a2 and a slewing bearing A3, the slewing bearing A3 is located between the first mounting plate a1 and the second mounting plate a2, an inner bearing a32 of the slewing bearing A3 is fixed on the first mounting plate a1, an outer bearing a31 of the slewing bearing A3 is fixed on the second mounting plate a2, the first mounting plate a1 is rotatably connected to the second mounting plate a2 through a slewing bearing A3, a positioning block a4 is disposed on the first mounting plate a1, a top ball a41 is disposed on the positioning block a4, a positioning hole a311 is disposed on an outer side wall of an outer bearing a31 of the slewing bearing A3, the top ball a41 is disposed opposite to the positioning hole a311 A5, and a spacing pin 2 is disposed on the second mounting plate a2, be equipped with installation cavity A11 on first mounting panel A1, both ends in the installation cavity A11 are provided with fixed block A7, two be provided with bayonet lock A6 between the fixed block A7, bayonet lock A6 is close to fixed block A7's side all is equipped with spliced pole A61, spliced pole A61 with all be equipped with spacing spring A8 between the fixed block A7, bayonet lock A6 is close to slewing bearing A3's side is equipped with round pin post A62, spacing pin A5 is located round pin post A62 is along with on the rotatory route of first mounting panel A1, manual brake subassembly B with slewing bearing A3 sets up relatively.
The number of the positioning blocks A4 is three, the positioning blocks A4 are arranged at intervals of 90 degrees, the number of the positioning holes A311 is four, and the positioning holes A311 are arranged at intervals of 90 degrees.
The top ball A41 may be a ball spring or a ball screw.
The hand brake assembly B comprises a hand brake bracket B1, an eccentric wheel B2, a handle B3, an eccentric wheel rotating shaft B4 and a sliding frame B5, the eccentric wheel rotating shaft B4 is connected on the handbrake bracket B1, the eccentric wheel B2 is connected on the eccentric wheel rotating shaft B4, the handle B3 is connected with the eccentric wheel B2, the sliding frame B5 is movably connected on the handbrake bracket B1, one side of the sliding frame B5 close to the pivoting support A3 is provided with a brake shoe B51, the other side of the sliding frame B5 is provided with a bearing surface B52, the bearing surface B52 is arranged opposite to the eccentric wheel B2, a guide post B53 is arranged on the sliding frame B5, a hand brake return spring B6 is arranged on the guide post B53, a box-type sliding block B7 is arranged on the hand brake bracket B1, the guide post B53 is connected to the box-type sliding block B7, and the handbrake return spring B6 is positioned between the box-type sliding block B7 and the bearing surface B52.
The eccentric wheel comprises a short shaft surface B21 and a long shaft surface B22, the short shaft surface B21 and the long shaft surface B22 are arranged opposite to the bearing surface B52 respectively, and the short shaft surface B21 and the long shaft surface B22 are transited by an arc-shaped surface, so that the action process of the hand brake is smooth and smooth. As shown in fig. 7, a long axial surface B21 of the eccentric wheel B2 acts on a bearing surface B52 to drive the sliding frame B5 to act and enable the brake shoe B51 to act on the pivoting support A3, so that the braking and holding action is realized; as shown in fig. 8, a short axial surface B22 of the eccentric wheel B2 acts on the bearing surface B52, and under the action of the hand brake return spring B6, the brake shoe B51 is far away from the slewing bearing A3, so that the loosening action is realized.
The handbrake support B1 is fixed on one side of the first mounting plate A1, and the handbrake support B1 and the adjacent positioning block A4 are arranged at an interval of 90 degrees.
When the technical scheme is used, the first mounting plate and the hand brake assembly are mounted on the seat, and the second mounting plate is mounted on the base. When the electric chair is positioned at +90 degrees, -90 degrees and +180 degrees, the chair surface is rotated by a corresponding angle, the top balls of the three positioning blocks on the first mounting plate are respectively matched with the positioning holes on the slewing bearing to realize the positioning at a specific angle, and then certain force is applied to continuously adjust the angle of the chair surface; when the electric chair is positioned at any angle, the chair surface is only required to be rotated to a user-defined angle, the hand brake assembly is operated, the brake lining is tightly attached to the outer bearing of the slewing bearing, the hand brake assembly is operated again, and the brake lining is separated from the outer bearing of the slewing bearing and can rotate again; no matter a specific angle or a user-defined angle is rotated, the base and the chair seat are limited in rotation by the limiting pin and the bayonet lock, and due to the arrangement of the limiting spring, buffering is provided when the limiting pin is contacted with the bayonet lock, so that the rotation stroke is slightly larger than +/-180 degrees.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (10)
1. The utility model provides an electric chair rotational positioning device, a serial communication port, including rotating assembly and manual brake subassembly, rotating assembly includes first mounting panel, second mounting panel and slewing bearing, slewing bearing is located first mounting panel with between the second mounting panel and respectively with first mounting panel with the second mounting panel is connected, first mounting panel passes through slewing bearing swivelling joint and is in on the second mounting panel, be provided with the locating piece on the first mounting panel, be provided with the locating hole on the slewing bearing, the locating piece with the locating hole sets up relatively, be provided with the spacer pin on the second mounting panel, be provided with the bayonet lock on the first mounting panel, the spacer pin with the bayonet lock sets up relatively, the manual brake subassembly with the slewing bearing sets up relatively.
2. The rotary positioning device for the electric chair as claimed in claim 1, wherein the first mounting plate is provided with a mounting cavity, two ends of the mounting cavity are provided with fixing blocks, the bayonet is located between the two fixing blocks, the side surfaces of the bayonet close to the fixing blocks are provided with connecting columns, and limiting springs are arranged between the connecting columns and the fixing blocks.
3. The device of claim 2, wherein the latch is provided with a pin near the side of the pivoting support, and the limit pin is located on the path of the pin rotating with the first mounting plate.
4. The device of claim 1 wherein the inner bearing of the swivel support is fixed to the first mounting plate and the outer bearing of the swivel support is fixed to the second mounting plate.
5. The device as claimed in claim 4, wherein the positioning block has a top ball, the positioning hole is located on an outer sidewall of the outer bearing, and the top ball is opposite to the positioning hole.
6. The device as claimed in claim 4, wherein there are three positioning blocks, and the positioning holes are 90 ° apart, four positioning holes are provided, and the positioning holes are 90 ° apart.
7. The device as claimed in any one of claims 1 to 6, wherein the hand brake assembly comprises a hand brake bracket, an eccentric wheel, a handle, an eccentric wheel rotating shaft and a sliding frame, the eccentric wheel rotating shaft is connected to the hand brake bracket, the eccentric wheel is connected to the eccentric wheel rotating shaft, the handle is connected to the eccentric wheel, the sliding frame is movably connected to the hand brake bracket, one side of the sliding frame close to the slewing bearing is provided with a brake shoe, the other side of the sliding frame is provided with a bearing surface, and the bearing surface is opposite to the eccentric wheel.
8. The device as claimed in claim 7, wherein the carriage is provided with a guide post, the guide post is provided with a hand brake return spring, the hand brake bracket is provided with a box-type slider, the guide post is connected to the box-type slider, and the hand brake return spring is located between the box-type slider and the carrying surface.
9. The device of claim 7, wherein the eccentric comprises a short axial surface and a long axial surface, and the short axial surface and the long axial surface are respectively disposed opposite to the bearing surface.
10. The device as claimed in claim 7, wherein the hand brake bracket is fixed to one side of the first mounting plate, and the hand brake bracket and the positioning block are spaced by 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111320736.3A CN114028149A (en) | 2021-11-09 | 2021-11-09 | Electric chair rotary positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111320736.3A CN114028149A (en) | 2021-11-09 | 2021-11-09 | Electric chair rotary positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114028149A true CN114028149A (en) | 2022-02-11 |
Family
ID=80136863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111320736.3A Pending CN114028149A (en) | 2021-11-09 | 2021-11-09 | Electric chair rotary positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114028149A (en) |
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| CN2369064Y (en) * | 1999-04-08 | 2000-03-15 | 上海旭卡机械电器有限公司 | Rotary rolling servo-operating chair |
| JP2001018694A (en) * | 1985-03-29 | 2001-01-23 | Suzuki Motor Corp | Lock structure for rotating seat in electric vehicle |
| JP2004098904A (en) * | 2002-09-10 | 2004-04-02 | Wako Kogyo Kk | Vehicular seat turning device |
| TWM250603U (en) * | 2004-02-11 | 2004-11-21 | Ching-Yao Liang | Turning disc |
| CN201630708U (en) * | 2010-01-12 | 2010-11-17 | 富翔股份有限公司 | Office chair armrest backward turning device |
| CN102159490A (en) * | 2008-09-22 | 2011-08-17 | 克朗设备公司 | Swivel seat with adjustable swivel resistance |
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| CN108968465A (en) * | 2018-07-27 | 2018-12-11 | 延锋安道拓座椅有限公司 | A kind of seat rotary locking mechanism |
| CN208339266U (en) * | 2017-08-07 | 2019-01-08 | 厦门市鑫雄伟工贸有限公司 | A kind of swivel chair rotary components and a kind of swivel chair |
| CN209203926U (en) * | 2018-08-21 | 2019-08-06 | 佛山市思福特医疗设备有限公司 | A kind of dental comprehensive therapeutic chair of brake rotation instrument arm |
| CN209219605U (en) * | 2018-08-28 | 2019-08-09 | 珠海西格医疗设备有限公司 | Seat rotational locking device |
| CN213344962U (en) * | 2018-04-12 | 2021-06-04 | 常州匠心独具智能家居股份有限公司 | Rotating base assembly for electric chair |
| CN213948225U (en) * | 2020-11-27 | 2021-08-13 | 芜湖汽车前瞻技术研究院有限公司 | Seat armrest rotational positioning structure |
| US11110023B1 (en) * | 2019-04-02 | 2021-09-07 | Boyd Industries, Inc. | Chair with swivel and brake system |
| CN113558922A (en) * | 2021-07-27 | 2021-10-29 | 广州市天河区唇没网络科技有限公司 | Good dental chair of stability |
-
2021
- 2021-11-09 CN CN202111320736.3A patent/CN114028149A/en active Pending
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| US3834660A (en) * | 1973-05-17 | 1974-09-10 | Pelton & Crane Co | Pedestal for a treatment chair |
| JP2001018694A (en) * | 1985-03-29 | 2001-01-23 | Suzuki Motor Corp | Lock structure for rotating seat in electric vehicle |
| CN2369064Y (en) * | 1999-04-08 | 2000-03-15 | 上海旭卡机械电器有限公司 | Rotary rolling servo-operating chair |
| JP2004098904A (en) * | 2002-09-10 | 2004-04-02 | Wako Kogyo Kk | Vehicular seat turning device |
| TWM250603U (en) * | 2004-02-11 | 2004-11-21 | Ching-Yao Liang | Turning disc |
| CN102159490A (en) * | 2008-09-22 | 2011-08-17 | 克朗设备公司 | Swivel seat with adjustable swivel resistance |
| CN201630708U (en) * | 2010-01-12 | 2010-11-17 | 富翔股份有限公司 | Office chair armrest backward turning device |
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| CN206277977U (en) * | 2016-12-28 | 2017-06-27 | 上海坦达轨道车辆座椅系统（长春）有限公司 | A kind of rotary positioning structure for bus seat |
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| CN107913154A (en) * | 2017-10-09 | 2018-04-17 | 孙婷婷 | One kind can remote control adjusting inspection chair |
| CN213344962U (en) * | 2018-04-12 | 2021-06-04 | 常州匠心独具智能家居股份有限公司 | Rotating base assembly for electric chair |
| CN108968465A (en) * | 2018-07-27 | 2018-12-11 | 延锋安道拓座椅有限公司 | A kind of seat rotary locking mechanism |
| CN209203926U (en) * | 2018-08-21 | 2019-08-06 | 佛山市思福特医疗设备有限公司 | A kind of dental comprehensive therapeutic chair of brake rotation instrument arm |
| CN209219605U (en) * | 2018-08-28 | 2019-08-09 | 珠海西格医疗设备有限公司 | Seat rotational locking device |
| US11110023B1 (en) * | 2019-04-02 | 2021-09-07 | Boyd Industries, Inc. | Chair with swivel and brake system |
| CN213948225U (en) * | 2020-11-27 | 2021-08-13 | 芜湖汽车前瞻技术研究院有限公司 | Seat armrest rotational positioning structure |
| CN113558922A (en) * | 2021-07-27 | 2021-10-29 | 广州市天河区唇没网络科技有限公司 | Good dental chair of stability |
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