CN215740213U - Parallel linkage operating chair - Google Patents
Parallel linkage operating chair Download PDFInfo
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- CN215740213U CN215740213U CN202121064904.2U CN202121064904U CN215740213U CN 215740213 U CN215740213 U CN 215740213U CN 202121064904 U CN202121064904 U CN 202121064904U CN 215740213 U CN215740213 U CN 215740213U
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- backrest
- arm
- chair
- shaft
- seat cushion
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Abstract
The utility model discloses a parallel linkage operating chair which comprises a backrest, a chair seat and a seat cushion, wherein the backrest is arranged on the chair seat, the angle between the chair seat and the seat cushion can be adjusted; the fixed arm is arranged below the rear part of the seat cushion, and the hinged arm is connected between the rotating arm and the fixed arm; the bent arm is fixedly arranged at the lower part of the backrest, and the other end of the bent arm connected with the backrest is movably connected with the motor. The utility model provides a parallel linkage surgical chair, wherein the angle of an armrest changes along with the change of the angle between a backrest and a chair seat, when the vertical distance between the chair cushion and the armrest changes, the included angle of the armrest and the chair seat changes in a small range, and when the included angle between the backrest and the chair seat is larger, the vertical distance between the armrest and the chair seat is smaller.
Description
Technical Field
The utility model relates to a dental operation chair in the technical field of medical instruments, in particular to a linkage adjusting technology for an armrest of an operation chair.
Background
The prior operating chair armrests are mostly of independent adjusting structures, and the angle adjustment of the armrests and the backrest is generally needed during the operation to adapt to the requirements of the operation, but the prior operating chair armrests are undoubtedly not beneficial to the operation; it is necessary to make the surgical chair more suitable for the needs of the doctor.
In view of this, it is desirable to provide a parallel linkage surgical chair that facilitates surgery.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical defects of the existing surgical chair, the utility model provides the parallel linkage surgical chair which is convenient for doctors to use, reduces unnecessary contact when the adjusting armrests are in contact with the surgery, improves the safety of the surgery, simplifies unnecessary operation contents in the surgery process, and is convenient for patients to hold and use.
The utility model aims to provide a parallel linkage operating chair, which comprises a backrest, a chair seat and a seat cushion, wherein the seat cushion is arranged on the chair seat, the angle between the backrest and the seat cushion can be adjusted,
the backrest is also provided with a handrail, an angle adjusting mechanism for keeping the angle between the handrail and the seat cushion to change in a small range is arranged between the backrest and the seat cushion,
the angle adjusting mechanism comprises a connecting shaft, a fixed arm, an articulated arm, a bent arm and a motor,
wherein, the middle part of the connecting shaft is provided with a rotating arm; the fixed arm is arranged below the rear part of the seat cushion, and the hinged arm is connected between the rotating arm and the fixed arm; the bent arm is fixedly arranged at the lower part of the backrest, and the other end of the bent arm connected with the backrest is connected with the power mechanism.
The articulated arm includes regulation end, fastening screw and regulation post, adjust end and regulation post threaded connection, fastening screw cover locate on the regulation double-screw bolt with regulation end zonulae occludens.
Adjusting columns are arranged at two ends of the hinged arm.
The backrest is provided with a force column and a protective column, one end of the connecting shaft is connected with the protective column, the other end of the connecting shaft is connected with the force column, and the rotating arm is arranged between the force column and the protective column and connected with the adjusting column;
the force column is provided with a shaft through hole, the shaft through hole comprises a first end part and a second end part, the first end part is provided with a first shaft sleeve, the second end part is provided with a second shaft sleeve, the middle part of the connecting shaft is provided with a boss, and one end of the connecting shaft sequentially penetrates through the first shaft sleeve, the first end part, the shaft through hole, the second end part and the second shaft sleeve and is fixed through a nut;
the boss is in press connection with the end face of the first shaft sleeve; the rotating arm is arranged between the force column and the protective column.
The handrail comprises a handrail support and a support shaft which is perpendicular to the handrail support, and a limit pin is arranged on the support shaft; the handrail installation device is characterized in that a containing part used for installing handrails is arranged corresponding to the support shaft, a switch channel is arranged on the side wall of the containing part along the radial direction, an accommodating channel is arranged along the axial direction, the switch channel is communicated with the accommodating channel, and the limiting pin can enter the accommodating channel through the switch channel and is placed in the accommodating channel.
And a plane bearing is arranged between the first shaft sleeve and the nut.
The guard post is provided with a concave part for receiving a receiving part, the receiving part is connected with the surface of the concave part, and the receiving part comprises a first position and a second position; when the depressed part is located at the first position, the switch channel is located outside the depressed part, and the switch channel is opened; when the recess is located at the second position, the accommodating channel is located in the recess, and the switch channel is closed.
A central control universal pulley is arranged below the chair seat.
The utility model provides a parallel linkage operating chair, which comprises an angle adjusting mechanism, wherein the angle adjusting mechanism comprises a motor for providing power and a bent arm fixedly connected with the lower part of a backrest, the motor provides power to drive the bent arm to rotate the backrest so as to adjust the included angle between the backrest and a seat cushion, when the angle between the backrest and the seat cushion is adjusted, a fixed arm, a hinged arm and a connecting shaft which are hinged together jointly act on a handrail, so that the angle between the handrail and the seat cushion is kept unchanged, when the backrest is adjusted, the handrail is lifted along with the bent arm, the larger the angle between the backrest and the seat cushion is, the closer the distance between the handrail and the seat cushion is, and finally the horizontal plane is close to be kept flat, through the structure, the utility model is more convenient for doctors to use, reduces unnecessary contact during the operation of adjusting the handrail contact, improves the safety of the operation and simplifies unnecessary operation contents in the operation process, and is convenient for patients to hold and use, and has important significance.
Drawings
Fig. 1 is a schematic structural view of a parallel linkage surgical chair provided by the utility model.
Fig. 2 is a structural diagram of the second state of fig. 1.
Fig. 3 is a partially enlarged schematic view of fig. 2.
Fig. 4 is a schematic diagram of the first state of fig. 3.
Fig. 5 is a schematic diagram of the second state of fig. 3.
Fig. 6 is a schematic view of the upright configuration of the chair back.
Fig. 7 is a partially enlarged schematic view of fig. 6.
Fig. 8 is a schematic view of a chair back tilt configuration.
Fig. 9 is a partially enlarged schematic view of fig. 8.
Fig. 10 is an exploded view of the back rest and armrest.
Fig. 11 is an enlarged schematic view of a portion a of fig. 10.
Fig. 12 is an enlarged schematic view of a portion B of fig. 10.
Fig. 13 is an enlarged schematic view of the portion C of fig. 10.
Fig. 14 is an enlarged view of the portion D of fig. 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the parallel linkage operating chair at least comprises a backrest 2, a chair seat 1 and a seat cushion 3, wherein the seat cushion 3 is arranged above the chair seat 1, and the angle between the chair seat 1 and the seat cushion 3 can be adjusted. As a foreseeable technical solution, the backrest 2 can be connected with the seat cushion 3, and the backrest 2 can also be connected with the seat 1 and realize angle adjustment. An angle adjusting mechanism for keeping the fixed angle or the close angle between the handrail 4 and the seat cushion 3 is arranged between the backrest 2 and the seat cushion 3; it should be noted that the angle adjusting mechanism keeps the included angle of the angle between the armrest 4 and the seat cushion 3 relatively unchanged or changes within a small angle range, and when the angle between the backrest 2 and the seat cushion 3, i.e. the angle between the backrest 2 and the seat cushion 3, is adjusted to be any angle between approximately 90 degrees and approximately 180 degrees, the distance between the armrest 4 and the seat cushion 3 is mainly changed, and the change of the included angle between the armrest 4 and the seat cushion 3 is very small.
The angle of the armrest 4 changes correspondingly with the change of the angle between the backrest 2 and the seat 1, and when the vertical distance between the seat cushion 3 and the armrest 4 changes, the included angle between the two is kept in a small range or is nearly unchanged; the larger the angle between the backrest 2 and the seat 1, the smaller the vertical distance between the armrest 4 and the seat 1.
The difference from the previous embodiment is that the armrest 4 is kept parallel to the seat cushion 3 when the angle between the backrest 2 and the seat cushion 3 is adjusted.
Preferably, the angle adjusting mechanism comprises a connecting shaft 6, a fixed arm 8, a hinged arm 9, a bent arm 8 and a power supply mechanism, wherein a rotating arm 67 is arranged in the middle of the connecting shaft 6; the fixed arm 8 is arranged below the rear part of the seat cushion 3, and the articulated arm 9 is connected between the rotating arm 67 and the fixed arm 8; the bent arm 8 is fixedly arranged at the lower part of the backrest 2, and the other end of the bent arm connected with the backrest 2 is movably connected with the power mechanism.
The working principle of the utility model is as follows: by applying the instability of the parallelogram and the principle that the opposite sides are always parallel, the principle that the seat cushion 3 remains parallel or nearly parallel to the armrest 4 angle is achieved. As shown in the figure, the four rows of edges are respectively the rotating arm 67, the hinge shaft, the connection point between the hinge shaft and the fixed seat to the backrest 2 and the seat cushion 3, and the corresponding part of the backrest 2.
The difference from the previous embodiment is that the fixing seat is disposed on the seat 1.
The angle adjusting mechanism comprises a motor for providing power and a bent arm 8 fixedly connected with the lower part of the backrest 2, and the motor provides power to drive the bent arm 8 to enable the backrest 2 to rotate so as to adjust an included angle between the backrest 2 and the seat cushion 3. The angle between the backrest 2 and the seat cushion 3 is adjusted by electrically driving the bent arm 8, so that the included angle between the backrest 2 and the seat cushion 1 is adjusted, and when the included angle between the backrest 2 and the seat cushion 1 is adjusted, the included angle between the armrest 4 and the seat cushion 3 is synchronously changed.
The fixed arm 8, the articulated arm 9 and the connecting shaft 6, which are articulated together, act together on the armrest 4, so that the angle between the armrest 4 and the seat cushion 3 remains constant, and when the backrest 2 is adjusted, the armrest 4 is lifted therewith, wherein a spacing distance is provided between the backrest 2 and the articulated shaft. The larger the included angle between the backrest 2 and the chair cushion is, the closer the distance between the handrail 4 and the seat cushion 3 is, and finally the horizontal plane is close to be kept flat.
As shown in the figure, the hinge arm 9 includes an adjusting end 93, a fastening screw 92 and an adjusting post 91, the adjusting end 93 is in threaded connection with the adjusting post 91, and the fastening screw 92 is sleeved on the adjusting post 91 and is tightly connected with the adjusting end 93. Adjust the end 93 and adjust the post 91 accessible rotation in order to realize articulated arm 9 length adjustment, when adjusting the completion back, fastening screw 92 supports tightly with adjusting the end 93, avoids the improper size of articulated arm 9 to adjust.
Further, the articulated arm 9 is provided with adjusting posts 91 at both ends.
The backrest 2 is provided with a force column 27 and a protective column 28, one rotatable end of the connecting shaft 6 is connected with the protective column 28, and the other end of the connecting shaft is connected with the force column 27; the rotating arm 67 is arranged between the force column 27 and the guard column 28, and the rotating arm 67 is fixedly connected with the adjusting column 91 or is integrated with the adjusting column; the force column 27 is provided with a shaft through hole 21, the shaft through hole 21 comprises a first end part and a second end part, the first end part is provided with a first shaft sleeve 23, the second end part is provided with a second shaft sleeve 24, the middle part of the connecting shaft 6 is provided with a boss 63 for tightly abutting against the first shaft sleeve 23, and one end of the connecting shaft 6 sequentially penetrates through the first shaft sleeve 23, the first end part, the shaft through hole 21, the second end part and the second shaft sleeve 24 and is fixed through nuts; the boss 63 is in compression joint with the end face of the first shaft sleeve 23; the swivel arm 67 is provided between the force post 27 and the bollard 28. The rotating arm 67 is erected from the backrest 2 to the rear part of the backrest 2, so that the adjusting mechanism main body is positioned at the back of the operating chair, and the operating chair is more practical and attractive. The rotation of the rotating arm 67 drives the rotating arm 67 to rotate, and the angle synchronization adjustment of the handrail 4 is realized.
As a preferable scheme, the handrail 4 comprises a handrail support 41 and a support shaft 42 which is perpendicular to the handrail support 41, and a limit pin 43 is arranged on the support shaft 42; the accommodating part for installing the handrail 4 is arranged corresponding to the supporting shaft 42, the side wall of the accommodating part is radially provided with a switch channel 65, the accommodating channel is axially arranged, the switch channel 65 is communicated with the accommodating channel, the limiting pin 43 can enter and be placed in the accommodating channel through the switch channel 65, and the handrail 4 is convenient to take down and install on the operating chair. It should be noted that the inventive trunnion extends along the axis of the connecting arm to achieve synchronous axial extension and synchronous angular rotation.
A plane bearing 25 is arranged between the first shaft sleeve 23 and the nut, so that the nut can be prevented from loosening.
The guard post 28 is provided with a concave part 22 for receiving a receiving part, the receiving part is connected with the surface of the concave part 22, and the receiving part comprises a first position and a second position; when the recess 22 is located at the first position, the switch channel 65 is located outside the recess 22, and the switch channel 65 is opened; when the recess 22 is in the second position, the receiving channel is located in the recess 22, the switch channel 65 is closed, and the armrest 4 can be selectively removed. The switch channel 65 includes a laterally disposed access opening 651 and a longitudinally disposed hold-down opening 652.
A central control universal pulley 5 is arranged below the chair seat 1. By opening one universal pulley, the other pulley is synchronously opened, and is synchronously locked.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A parallel linkage operating chair comprises a backrest, a chair seat and a seat cushion, wherein the seat cushion is arranged on the chair seat, the angle between the backrest and the seat cushion can be adjusted,
the backrest is also provided with a handrail, an angle adjusting mechanism for keeping the angle between the handrail and the seat cushion to change in a small range is arranged between the backrest and the seat cushion,
the angle adjusting mechanism comprises a connecting shaft, a fixed arm, an articulated arm and a bent arm,
wherein, the middle part of the connecting shaft is provided with a rotating arm; the fixed arm is arranged below the rear part of the seat cushion, and the hinged arm is connected between the rotating arm and the fixed arm; the bent arm is fixedly arranged at the lower part of the backrest, and the other end of the bent arm connected with the backrest is connected with the power mechanism.
2. The parallel linkage surgical chair of claim 1,
the articulated arm includes regulation end, fastening screw and regulation post, adjust end and regulation post threaded connection, fastening screw cover locate on the regulation double-screw bolt with regulation end zonulae occludens.
3. The parallel linkage surgical chair of claim 2,
adjusting columns are arranged at two ends of the hinged arm.
4. The parallel linkage surgical chair of claim 3,
the backrest is provided with a force column and a protective column, one end of the connecting shaft is connected with the protective column, the other end of the connecting shaft is connected with the force column, and the rotating arm is arranged between the force column and the protective column and connected with the adjusting column;
the force column is provided with a shaft through hole, the shaft through hole comprises a first end part and a second end part, the first end part is provided with a first shaft sleeve, the second end part is provided with a second shaft sleeve, the middle part of the connecting shaft is provided with a boss, and one end of the connecting shaft sequentially penetrates through the first shaft sleeve, the first end part, the shaft through hole, the second end part and the second shaft sleeve and is fixed through a nut;
the boss is in press connection with the end face of the first shaft sleeve; the rotating arm is arranged between the force column and the protective column.
5. The parallel linkage surgical chair of claim 4,
the handrail comprises a handrail support and a support shaft which is perpendicular to the handrail support, and a limit pin is arranged on the support shaft; the handrail installation device is characterized in that a containing part used for installing handrails is arranged corresponding to the support shaft, a switch channel is arranged on the side wall of the containing part along the radial direction, an accommodating channel is arranged along the axial direction, the switch channel is communicated with the accommodating channel, and the limiting pin can enter the accommodating channel through the switch channel and is placed in the accommodating channel.
6. The parallel linkage surgical chair of claim 5,
and a plane bearing is arranged between the first shaft sleeve and the nut.
7. The parallel linkage surgical chair of claim 6,
the guard post is provided with a concave part for receiving a receiving part, the receiving part is connected with the surface of the concave part, and the receiving part comprises a first position and a second position; when the depressed part is located at the first position, the switch channel is located outside the depressed part, and the switch channel is opened; when the recess is located at the second position, the accommodating channel is located in the recess, and the switch channel is closed.
8. The parallel linkage surgical chair of claim 1,
a central control universal pulley is arranged below the chair seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121064904.2U CN215740213U (en) | 2021-05-18 | 2021-05-18 | Parallel linkage operating chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121064904.2U CN215740213U (en) | 2021-05-18 | 2021-05-18 | Parallel linkage operating chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215740213U true CN215740213U (en) | 2022-02-08 |
Family
ID=80097392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121064904.2U Active CN215740213U (en) | 2021-05-18 | 2021-05-18 | Parallel linkage operating chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215740213U (en) |
-
2021
- 2021-05-18 CN CN202121064904.2U patent/CN215740213U/en active Active
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| GR01 | Patent grant |