CN221770701U - Diagnosis and treatment chair with balance armrests - Google Patents
Diagnosis and treatment chair with balance armrests Download PDFInfo
- Publication number
- CN221770701U CN221770701U CN202323524603.5U CN202323524603U CN221770701U CN 221770701 U CN221770701 U CN 221770701U CN 202323524603 U CN202323524603 U CN 202323524603U CN 221770701 U CN221770701 U CN 221770701U
- Authority
- CN
- China
- Prior art keywords
- unit
- shaft
- armrest
- chair
- backrest
- 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.)
- Active
Links
- 238000003745 diagnosis Methods 0.000 title claims abstract description 8
- 230000002457 bidirectional effect Effects 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000011796 hollow space material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000005288 electromagnetic effect Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Landscapes
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
The utility model provides a diagnosis and treatment chair with balance armrests, which comprises a chair body and a balance armrests device arranged on the chair body. The chair body comprises a base and a seat arranged on the base, and the seat comprises a cushion unit and a backrest unit. The backrest unit is matched with a pivoting device and is turned over relative to the cushion unit by taking a rotating shaft of the pivoting device as an axle center. The balance armrest device is arranged on the backrest unit, and when the backrest unit turns over relative to the cushion, the balance armrest device comprises a mechanical means or a motor means for maintaining the armrest unit in a horizontal state. According to the balance armrest design provided by the utility model, in the structure that the armrest unit is connected to the backrest unit, the angle of the armrest unit can be changed along with the overturning of the backrest, and the problem that the armrest unit interferes with doctor operation or causes inconvenient use of patients during overturning is avoided.
Description
Technical Field
The present utility model relates to a chair, and more particularly to a chair with balanced armrests.
Background
The dental diagnosis and treatment chair is a special chair for patients to sit or lie when a dentist diagnoses. In general, a dental chair is designed to be comfortable and convenient for surgical comfort, so that an operator can maintain a fixed posture during surgery, and a dentist is given enough space and view to make a diagnosis. Many other tools and devices are available on the market, such as lights, water absorbers, water nozzles, etc., which are convenient for doctors to perform treatment.
Most dental chairs are adjustable in height and angle of inclination, allowing a doctor to perform surgery or treatment from the optimal angle and height, and to ensure that the patient remains comfortable during the treatment, these chairs are often provided with cushions and good support to avoid the patient sitting discomfort during surgery. In summary, a dental chair is an indispensable device in a dental clinic, has multiple functions at the same time, and requires a certain degree of expertise to know how to adjust the chair.
Disclosure of utility model
The utility model provides a diagnosis and treatment chair with balance armrests, which comprises a chair body and the balance armrests arranged on the chair body. The chair body comprises a base and a seat arranged on the base, and the seat comprises a cushion unit and a backrest unit. The backrest unit is matched with a pivoting device and is turned over relative to the cushion unit by taking a rotating shaft of the pivoting device as an axle center. The balance armrest device is arranged on the backrest unit, and when the backrest unit turns over relative to the cushion unit, the balance armrest device comprises a mechanical means or a motor means for maintaining the armrest unit in a horizontal state.
Further, the mechanical means of the balance armrest device comprises a seat body pivoted on the backrest unit, the armrest unit arranged on the seat body, and a connecting rod with two ends pivoted on the seat body and the base respectively, wherein the axle center of the pivoting device is parallel to a first connecting line between the axle centers of the backrest unit and the seat body, and the second connecting line is equal to a second connecting line between the axle centers of the two ends of the connecting rod, so as to form a parallelogram.
Further, the armrest unit comprises a horizontal rotating seat arranged on the seat body and an armrest rod arranged on the horizontal rotating seat to rotate in the horizontal direction through the horizontal rotating seat.
Further, the horizontal rotating seat comprises a shaft sleeve fixed on the seat body and a rotating shaft pivoted on the shaft sleeve.
Further, a positioning hole is formed in the rotating shaft, and the handrail is locked on the positioning hole through the positioning hole and a lateral locking unit.
Further, a limit cross rod is arranged at the lower side of the rotating shaft and horizontally arranged on the shaft lever of the rotating shaft, so that the limit cross rod transversely protrudes out of the shaft lever and is used for being clamped in a bidirectional groove on the upper surface of the shaft sleeve, and the bidirectional groove corresponds to and coincides with the shaft lever on the rotating shaft at a first angle position and a second angle position respectively, so that the shaft lever is embedded in the bidirectional groove when pivoted to a corresponding angle.
Further, the limiting cross rod protrudes out of two sides of the shaft rod, a limiting block is arranged on the peripheral wall surface of one side of the shaft sleeve, which faces towards the rotating shaft in the axial direction, when the supporting rod is lifted, the limiting cross rod is separated from the bidirectional groove, and two protruding sides of the limiting cross rod interfere with the limiting block to limit the pivoting stroke of the rotating shaft.
Further, a yielding groove is arranged on the rotating shaft and comprises a first limiting wall arranged at a first angle position, a second limiting wall arranged at a second angle position and a limiting rail arranged between the first limiting wall and the second limiting wall, a limiting block is arranged on the shaft sleeve and embedded into the limiting rail, and the limiting block is limited to rotate between the first angle position and the second angle position so as to limit the horizontal rotating stroke of the handrail.
Further, the motor means of the balancing armrest device comprises another pivoting device arranged on the backrest unit, a seat body arranged on the other pivoting device and the armrest unit arranged on the seat body, and the other pivoting device receives a control instruction when the pivoting device rotates, and rotates relative to the pivoting device to keep the armrest unit horizontal.
Further, the base comprises a base, a lifting unit arranged on the base and a bracket arranged on the lifting unit, wherein the bracket is used for arranging the cushion unit and the backrest unit.
Further, the lifting unit lifts or lowers the bracket according to the control instruction.
Further, the support is provided with bearing units at two sides of the backrest unit respectively, and the pivoting device comprises a motor, wherein a shaft lever of the motor passes through the two bearing units to provide support and is combined with the backrest unit.
Therefore, in the structure that the armrest unit is connected to the backrest unit, the balance armrest design provided by the utility model can avoid the problem that the angle of the armrest unit is changed along with the overturning of the backrest, and the armrest unit interferes with the doctor operation during overturning or causes inconvenient use of patients.
Drawings
Fig. 1 is a schematic view of the chair according to the present utility model.
Fig. 2 is a schematic side view of the chair according to the present utility model in a first state.
Fig. 3 is a schematic side view of the chair according to the present utility model in a second state.
Fig. 4 is an exploded view of a part of the chair according to the present utility model.
Fig. 5 is an enlarged partial schematic view of a side of the balanced handrail assembly of the present utility model.
Fig. 6 is a partially transparent schematic illustration of an isometric view of a balanced handrail assembly of the present utility model.
Fig. 7 is a partially transparent schematic illustration of a balanced handrail assembly of the present utility model in a top view.
Fig. 8A is a schematic diagram (a) illustrating the operation of the balance arm device according to the present utility model.
Fig. 8B is a schematic diagram of the operation of the balance arm device according to the present utility model (ii).
Fig. 9 is an enlarged partial schematic view of a side of another embodiment of the balanced handrail assembly of the present utility model.
The figures are marked as follows:
100. diagnosis and treatment chair
10. Chair body
11. Base seat
111. Base seat
112. Lifting unit
113. Support frame
1131. Bearing unit
1132. Bearing unit
12. Chair seat
121. Cushion unit
122. Foot rest unit
123. Backrest unit
124. Headrest unit
13. Pivoting device
131. Rotating shaft
20. Balanced handrail device
21. Seat body
22. Armrest unit
221. Horizontal rotary seat
S2 limiting block
221A shaft sleeve
2211A bidirectional groove
2212A sleeve
2213A hollow space
2214A return spring
2215A compression rod
2216A limiting piece
2217A wall surface
221B rotating shaft
2211B positioning hole
2212B shaft lever
S1 limiting cross bar
First projection of WA1
WA2 second projection
S3 abdication groove
P1 first angular position
P2 second angular position
222. Arm rest
23. Connecting rod
30. Control device
A1 Axle center
A2 Axle center
L1 connecting line
A3 Axle center
A4 Axle center
L2 connecting line
D1 Lateral locking unit
20A balance handrail device
123A backrest unit
21A pivoting device
22A seat body
23A armrest unit
B1 Arrows
B2 Arrows
Detailed Description
The detailed description and technical content of the present utility model will now be described with reference to the accompanying drawings. For convenience of description and for understanding of the technical content of the present utility model, some of the content is not necessarily drawn according to actual scale, and the scale and shape are not intended to limit the scope of the present utility model, which is described in advance herein.
The "side" in the present utility model may be, for example, but not limited to, the "left side", "right side", "front side", "rear side", "upper side" or "lower side" of the target object or any other position near the target object, as described herein.
Referring to fig. 1, an external view of a chair according to the present utility model is shown in the following, in which: the chair 100 of the present embodiment mainly includes a chair body 10, a balance arm device 20 disposed on the chair body 10, and a control device 30 for generating control commands to control the operation modes of the devices of the chair body 10. The "chair" according to the present utility model is described by way of example only, and is not limited to a dental chair, and the chair may be, for example, but not limited to, an ophthalmic chair, an otorhinolaryngological chair, an orthopedic chair, an obstetrical/gynecological chair, a urological chair, a rehabilitation chair, a general chair, or other similar chairs, or surgical chairs, and is not limited in the present utility model.
Regarding the detailed structure of the chair according to the present utility model, please refer to fig. 2 and 3 together, which are a schematic side view of the first state and a schematic side view of the second state of the chair according to the present utility model, as shown in the following: in this embodiment, the seat body 10 mainly includes a base 11 and a seat 12 disposed on the base 11. In one embodiment, the seat 12 may be divided into four main parts, namely a cushion unit 121, a footrest unit 122, a backrest unit 123, and a headrest unit 124.
In one embodiment, to adjust the height of the seat 12, the base 11 mainly includes a base 111, a lifting unit 112 disposed on the base 111, and a bracket 113 disposed on the lifting unit 112. The lifting unit 112 is connected to the control device 30, and lifts or lowers the support 113 according to a control command received by the control device 30, thereby adjusting the height of the seat 12. The support 113 is provided for the cushion unit 121 and the backrest unit 123, so as to provide support for the cushion unit 121 and the backrest unit 123 through the support 113. The headrest unit 124 is disposed on the backrest unit 123 such that the headrest position of the headrest unit 124 is located on the upper side of the backrest unit 123. The reclining unit 122 is connected to the cushion unit 121, and the reclining unit 122 is supported by the cushion unit 121. In other embodiments, the headrest unit 124 and the cushion unit 121 may be directly connected to the support 113, and the support 113 is used as a backbone of the whole chair, which is not limited in the present utility model.
In order to adjust the angle of the backrest unit 123, the backrest unit 123 is disposed in cooperation with the pivot device 13, and is turned over relative to the cushion unit 121 about the rotation axis 131 of the pivot device 13. The balance arm rest device 20 is disposed on the backrest unit 123, and when the backrest unit 123 is turned over relative to the cushion unit 121, the balance arm rest device 20 maintains the arm rest unit 22 in a horizontal state by mechanical means or motor means regardless of the angle to which the backrest unit 123 is turned over. The term "mechanical means" as used herein refers to a means that maintains the armrest unit 22 in a balanced state under various operating conditions by purely mechanical action without directly passing through a motor; by "electromechanical means" is meant that involves the use of electrical or electromagnetic effects to perform an operation or function, such as an electric motor. It should be noted that the "maintained in a horizontal state" is not necessarily a completely horizontal state, and the armrest unit 22 may be modified to be substantially horizontal for ergonomic or comfort considerations, and such modifications are included in the scope of the present utility model and are described herein.
Referring to fig. 4 and 5, a partially exploded view of the chair according to the present utility model and a partially enlarged view of the side of the balance arm device according to the present utility model are shown, wherein: in one embodiment, the mechanical means of the balance arm device 20 includes a base 21 pivoted on the backrest unit 123, an arm unit 22 disposed on the base 21, and a connecting rod 23 with two ends respectively pivoted to the base 21 and the base 11. In one embodiment, the bracket 113 is provided with bearing units 1131 and 1132 on two sides of the backrest unit 123, and the pivoting device 13 includes a motor, and a shaft of the motor passes through the two bearing units 1131 and 1132 to provide support and is combined with the backrest unit 123. In one embodiment, the motor may be, for example, a DC motor, an AC motor, a stepper motor, a servo motor, an electromagnetic motor, or other such devices.
In order to maintain the balance of the armrest unit 22 at various angles, in the side view (as seen in fig. 5), a line L1 connecting the axis A1 of the pivot device 13 and the axis A2 of the backrest unit 123 to which the seat 21 is pivotally connected, and a line L2 connecting the axis A3 of the seat 21 to which the link 23 is pivotally connected and the axis A4 of the base 11 to which the link 23 is pivotally connected are parallel and equal in length to each other to form a parallelogram. By the parallelogram arrangement, the armrest unit 22 on the seat body 21 can be maintained in a substantially horizontal state regardless of the adjustment of the backrest unit 123 to an arbitrary angle. In one embodiment, the shaft A4 of the link 23 pivoted to the base 11 is disposed at one side of the bearing units 1131 and 1132, and this part is required to be fixed relative to the shaft A1 of the pivot device 13 only by determining the arrangement requirement of the mechanism, and is not limited to be disposed on a specific device or mechanism.
Referring to fig. 6 and 7, a partially transparent schematic diagram of a side view and a partially transparent schematic diagram of a top view of the balance handrail device according to the present utility model are shown in the following: in one embodiment, to facilitate the patient to get up and get out from the side when getting out of the seat, the armrest unit 22 includes a horizontal rotating seat 221 disposed on the seat body 21 and a lever 222, and the lever 222 is disposed on the horizontal rotating seat 221 to rotate from the horizontal direction through the horizontal rotating seat 221. Specifically, the horizontal rotation base 221 mainly includes a shaft housing 221A fixed to the base 21 and a rotation shaft 221B pivotally provided to the shaft housing 221A. In order to fix the armrest 222 to the horizontal rotation seat 221, a positioning hole 2211B is provided on the rotation shaft 221B, and the armrest 222 is locked to the positioning hole 2211B through the positioning hole 2211B and through the lateral locking unit D1. In one embodiment, the lateral locking unit D1 may be, for example, but not limited to, a screw and bolt, a screw rod, a positioning pin, a rivet, or other such mechanism, which is not limited in the present utility model.
In an embodiment, a limit cross rod S1 is disposed at the lower side of the rotating shaft 221B, and the limit cross rod S1 is horizontally disposed on the shaft 2212B of the rotating shaft 221B, so that a bidirectional groove 2211A for being clamped on the upper surface of the shaft sleeve 221A protrudes laterally from the shaft 2212B. The two-way slot 2211A corresponds to and coincides with the limit cross bar S1 on the rotating shaft 221B at the first angle position P1 and the second angle position P2, so that the limit cross bar S1 is embedded in the two-way slot 2211A when the shaft lever 2212B is pivoted to a corresponding angle, and the limit cross bar S1 interferes with the walls around the two-way slot 2211A at other relative pivoting angles, thereby fixing the rotating shaft 221B at the corresponding two pivoting angles. The pivot angle is the pivot axis 221B relative to the boss 221A, and is described in the present utility model. In this embodiment, the bidirectional groove 2211A is in a cross shape, the limiting cross bar S1 protrudes from two sides of the shaft 2212B, and the rotation angle of the handrail 222 is fixed in the range of 0-90 degrees by this configuration; in other embodiments, the angle between the two slots of the bidirectional slot 2211A is not limited to 90 degrees, and the angle between the two slots can be adjusted according to the requirement, thereby changing the resting angle of the handrail 222. In other embodiments, the spacing beam S1 may protrude from a single side of the shaft 2212B, and the bidirectional slot 2211A may be cross-shaped or L-shaped, which is not limited in the present utility model.
In order to limit the rotation angle of the support rod 222, in the embodiment of the utility model, the limiting cross rod S1 protrudes from two sides of the shaft 2212B, the shaft sleeve 221A is provided with a limiting block S2 on a peripheral wall surface facing one side of the rotating shaft 221B in the axial direction, when the support rod 222 is lifted, the limiting cross rod S1 is separated from the bidirectional groove 2211A, and two protruding sides of the limiting cross rod S1 interfere with the limiting block S2 to limit the pivoting travel of the rotating shaft 221B and further limit the rotation angle of the support rod 222. The rotation angle of the armrest 222 depends on the angle between the first protruding portion WA1 (at the first angular position P1) protruding from the first side of the limit rail S1 on the shaft 2212B and the second protruding portion WA2 (at the second angular position P2) protruding from the second side of the shaft 2212B, so that the horizontal rotary base 221 can only move within the range defined by the first angular position P1 and the second angular position P2 by the interference between the limit rail S1 and the fixed-position limit block S2. In addition, the position of the rotation shaft 221B corresponding to the position of the stop block S2 is provided with a relief groove S3, so that the stop block S2 can be accommodated in the relief groove S3 when the stop block S1 is embedded into the bidirectional groove 2211A, and interference between the stop block S2 and the rotation shaft 221B is avoided.
The "first angular position" and "second angular position" described herein specifically refer to positions defined according to radial angles (or polar angles), and also refer to a position passing through by radial extension at a first radial angle as a first angular position P1 and a position passing through by radial extension at a second radial angle as a second angular position P2, centered on the axial center of the rotation shaft 221B.
In an embodiment, the included angle A1 defined between the first angular position P1 and the second angular position P2 (i.e. between the first protruding portion WA1 and the second protruding portion WA 2) is between 90 degrees and 120 degrees, which is not limited in the present utility model.
Referring to fig. 8A and 8B, an operation schematic diagram (a) and an operation schematic diagram (B) of the balance arm device according to the present utility model are shown in the following: in an embodiment, in order to provide proper elasticity when the armrest 222 is lifted, the armrest 222 is automatically reset (embedded in the bidirectional slot 2211A) when rotated to the overlapping position of the limit cross bar S1 and the bidirectional slot 2211A, the bottom side of the sleeve 221A has a sleeve 2212A, a hollow space 2213A is provided inside the sleeve 2212A for the bottom of the shaft 2212B to pass through, a compression rod 2215A is provided on the bottom of the shaft 2212B, a limit plate 2216A is provided at one end of the compression rod 2215A, a reset spring 2214A is sleeved outside the sleeve 2212A and is configured between a wall surface on the bottom side of the sleeve 221A and the limit plate 2216A, and one end of the reset spring 2214A is fixed on the limit plate 2216A, when the armrest 222 is lifted, as shown in fig. 8A, the rotation shaft 221B is relatively far away from the sleeve 221A, and the compression rod 2215A moves upward to compress the reset spring 2214A therebetween, so that the reset spring 2214A is compressed. When the stop crossbar S1 moves to the position of coincidence with the bidirectional groove 2211A, as shown in fig. 8B, the return spring 2214A is released, and the stop crossbar S1 is returned to the inside of the bidirectional groove 2211A by the urging force of the return spring 2214A.
Referring to fig. 9, a schematic diagram showing a side view of another embodiment of the balance handrail device according to the present utility model is shown in a partially enlarged view, wherein the schematic diagram is shown in the following: in another embodiment, the motor means for balancing the armrest apparatus 20A includes a pivot apparatus 21A disposed on the backrest unit 123A, a base 22A disposed on the pivot apparatus 21A, and an armrest unit 23A disposed on the base 22A. Specifically, the pivoting device 21A is configured to receive a control instruction of the control device 30 when the pivoting device 13 rotates, and the pivoting device 21A is triggered to rotate relative to the pivoting device 13 by the control instruction to keep the armrest unit 23A horizontal; more specifically, the control device 30 synchronizes the pivoting device 13 and the pivoting device 21A by transmitting corresponding control instructions to the pivoting device 13 and the pivoting device 21A, respectively, so that the armrest unit 23A is kept balanced. The term "synchronization" as used herein does not mean that the strokes of the pivoting means 13 and the pivoting means 21A are identical, but means that the stroke of the pivoting means 21A corresponds to the stroke of the pivoting means 13, and that the armrest unit 23A is balanced by finding the stroke by which the pivoting means 21A should rotate through the rotational stroke of the pivoting means 13. In one embodiment, the control device 30 may calculate the stroke of the pivoting device 21A by calculation; in another embodiment, the control device 30 can map the rotation stroke of the pivot device 13 directly to the rotation stroke of the pivot device 21A (e.g. look-up table) by mapping, and the variation of the embodiment is not limited in the present utility model.
As shown in fig. 9, in order to maintain the balance of the armrest unit 23A at various angles, when the control device 30 outputs a control command to tilt the backrest unit 123A backward, the pivot device 21A drives the rotation shaft to rotate in the reverse clock direction (as indicated by arrow B1) when receiving the first control command of the control device 30, and the control device 30 simultaneously transmits a second control command to operate the pivot device 13 to rotate in the clockwise direction (as indicated by arrow B2) so as to control the armrest unit 23A to maintain the balance. In one embodiment, the Control device 30 may, for example, include but not limited to, PID Control (Proportional-Integral-DERIVATIVE CONTROL), master-Slave Control (Master-Slave Control), model predictive Control (Model Predictive Control, MPC), adaptive Control (Adaptive Control), synchronization Control (Synchronous Control), or the like, to Control the synchronization relationship between the pivoting device 21A and the pivoting device 13.
In summary, in the structure of the armrest unit connected to the backrest unit, the design of the balance armrest provided by the utility model can avoid the problem that the angle of the armrest unit is changed along with the overturning of the backrest, and the armrest unit interferes with the doctor operation or causes inconvenient use of patients during the overturning.
The present utility model has been described in detail in the foregoing description, but is to be considered as an exemplification of one preferred embodiment of the utility model, and is not intended to limit the scope of the utility model in any manner, namely equivalent variations and modifications as contemplated by the appended claims are intended to be covered by the present utility model.
Claims (8)
1. A chair for diagnosis and treatment having a balanced armrest, comprising:
The seat comprises a cushion unit and a backrest unit, wherein the backrest unit is matched with a pivoting device and overturns relative to the cushion unit by taking a rotating shaft of the pivoting device as an axis; and
The balance armrest device is arranged on the backrest unit, and when the backrest unit turns over relative to the cushion unit, the balance armrest device comprises a mechanical means or a motor means for maintaining the armrest unit in a horizontal state;
The mechanical means of the balance armrest device comprises a seat body pivoted on the backrest unit, the armrest unit arranged on the seat body and a connecting rod with two ends pivoted on the seat body and the base respectively, wherein the axle center of the pivoting device is parallel to a first connecting line pivoted between the axle centers of the backrest unit and is equal to a second connecting line between the axle centers of the two ends of the connecting rod so as to form a parallelogram, and the armrest unit comprises a horizontal rotating seat arranged on the seat body and an armrest rod which is arranged on the horizontal rotating seat so as to rotate in the horizontal direction through the horizontal rotating seat.
2. The chair of claim 1, wherein the horizontal swivel base comprises a sleeve fixed to the base and a shaft pivotally mounted to the sleeve.
3. The chair of claim 2, wherein the shaft is provided with a positioning hole, and the arm is locked to the positioning hole by a lateral locking unit through the positioning hole.
4. The chair of claim 2, wherein a limit cross bar is disposed on the lower side of the shaft, and the limit cross bar is horizontally disposed on the shaft rod of the shaft, so that the shaft rod protrudes transversely and is used for being clamped in a bidirectional groove on the upper surface of the shaft sleeve, and the bidirectional groove corresponds to and coincides with the shaft rod on the shaft rod at a first angle position and a second angle position respectively, so that the shaft rod is embedded in the bidirectional groove when pivoted to a corresponding angle.
5. The chair according to claim 4, wherein the limit rail protrudes from both sides of the shaft, a limit block is disposed on a peripheral wall surface of the shaft housing facing one side of the shaft in an axial direction, the limit rail is separated from the bi-directional groove when the arm is lifted, and both protruding sides of the limit rail interfere with the limit block to limit a pivoting stroke of the shaft.
6. The chair of claim 1, wherein the motor means of the balance arm comprises another pivot device disposed on the backrest unit, a seat disposed on the other pivot device, and the arm unit disposed on the seat, the other pivot device receiving a control command when the pivot device rotates, and rotating relative to the pivot device to keep the arm unit horizontal.
7. The chair of claim 1, wherein the base comprises a base, a lifting unit disposed on the base, and a support disposed on the lifting unit, wherein the support is configured to be disposed on the cushion unit and the backrest unit.
8. The chair of claim 7, wherein the support is provided with bearing units on both sides of the backrest unit, and the pivoting means comprises a motor, and a shaft of the motor passes through the two bearing units to provide support and is coupled to the backrest unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202323524603.5U CN221770701U (en) | 2023-12-21 | 2023-12-21 | Diagnosis and treatment chair with balance armrests |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202323524603.5U CN221770701U (en) | 2023-12-21 | 2023-12-21 | Diagnosis and treatment chair with balance armrests |
Publications (1)
Publication Number | Publication Date |
---|---|
CN221770701U true CN221770701U (en) | 2024-09-27 |
Family
ID=92825454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202323524603.5U Active CN221770701U (en) | 2023-12-21 | 2023-12-21 | Diagnosis and treatment chair with balance armrests |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN221770701U (en) |
-
2023
- 2023-12-21 CN CN202323524603.5U patent/CN221770701U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3596982A (en) | Patient{3 s chair | |
US5490716A (en) | Surgeon's chair | |
CA2743455C (en) | Pivotable seat | |
WO2001052701A1 (en) | Computer work station | |
US5108148A (en) | Reclining chair mechanism having sole support pivot | |
JP2002537882A (en) | Mechanisms for beds and other reclining furniture | |
CN221770701U (en) | Diagnosis and treatment chair with balance armrests | |
US3142509A (en) | Adjustable chair | |
CN111214340A (en) | Seat cushion with head and neck fixing device | |
US3948559A (en) | Adjustable chair | |
JPH0249656A (en) | Medical chair | |
RU2409341C2 (en) | Table for diagnostics | |
TWM659084U (en) | Treatment chair with balanced armrests | |
CN115151167B (en) | Chair | |
KR101539018B1 (en) | A multi-functional wheelchair and the comprising method thereof | |
JP5578457B1 (en) | Reclining seat | |
KR200301444Y1 (en) | Easy chair | |
CN108464669B (en) | Chair with display device and advertisement display method | |
CN219396727U (en) | Three-motor nail-beautifying massage bed chair | |
CN213250887U (en) | Electronic blood sampling chair with function of releiving | |
KR200180804Y1 (en) | Standing typed chair | |
CN220193380U (en) | Peritoneal dialysis tube changing chair | |
CN214762057U (en) | Otolaryngology branch of academic or vocational study is with seeing and examining chair that has structure of lying down of back | |
US7381214B1 (en) | Control system for lift assembly associated with chiropractic drop mechanism | |
CN211985976U (en) | Wheelchair with adjustable armrests |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |