CN215079869U - Take elevating system's chin strap - Google Patents
Take elevating system's chin strap Download PDFInfo
- Publication number
- CN215079869U CN215079869U CN202023325488.5U CN202023325488U CN215079869U CN 215079869 U CN215079869 U CN 215079869U CN 202023325488 U CN202023325488 U CN 202023325488U CN 215079869 U CN215079869 U CN 215079869U
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- Prior art keywords
- chin
- fixed
- screw rod
- chin rest
- motor
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Abstract
The utility model discloses a chin bar with a lifting mechanism, which comprises a chin bar base and a lifting mechanism arranged in the chin bar base; an installation plate is fixed on the inner side wall of the cavity of the chin rest base, and a vertical sliding groove structure is arranged on the installation plate; the lifting mechanism comprises a motor, a screw rod fixedly connected with a rotating shaft of the motor and a screw rod nut sleeved outside the screw rod; the jaw support structure is characterized by also comprising a jaw support supporting rod which is sleeved outside the screw rod nut and fixedly connected with the screw rod nut, wherein a pin is arranged on the side wall of the jaw support supporting rod, and is embedded into a groove of the chute structure and is in sliding connection with the chute wall; the upper end of the chin support rod is fixed with a chin support bracket. The utility model discloses take elevating system in chin rest, elevating system simple structure drives chin rest bracket along vertical reciprocating motion through the positive reverse motion of motor to guarantee reciprocating of patient's head in the certain limit, perhaps be applicable to different patients' detection.
Description
Technical Field
The utility model relates to a take elevating system's chin strap.
Background
Chin rest is the indispensable structure of ophthalmic devices, when examining some patients, in order to fix head and eye, the chin rest that needs the disease is on chin rest bracket, to the difference of patient's head height, need adjust the detection with the different head height patients of adaptation to the height of chin rest bracket, or when same patient need upwards or move down in certain extent head, the altitude mixture control of current ophthalmic devices with chin rest bracket is manual regulation, need the doctor to operate during the use, inefficiency.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model provides a take elevating system's chin strap to the altitude mixture control of ophthalmic devices for the manual regulation of prior art chin strap bracket has the problem of inefficiency.
The technical scheme is as follows: the utility model discloses a chin bar with a lifting mechanism, which comprises a chin bar base and a lifting mechanism arranged in the chin bar base; an installation plate is fixed on the inner side wall of the cavity of the chin rest base, and a sliding groove structure is arranged on the installation plate; the lifting mechanism comprises a motor, a screw rod fixedly connected with a rotating shaft of the motor and a screw rod nut sleeved outside the screw rod; the jaw support structure is characterized by also comprising a jaw support supporting rod which is sleeved outside the screw rod nut and fixedly connected with the screw rod nut, wherein a pin is arranged on the side wall of the jaw support supporting rod, and is embedded into a groove of the chute structure and is in sliding connection with the chute wall; the upper end of the chin support rod is fixed with a chin support bracket.
The chin rest support rod is of a hollow structure, and the screw rod extends into the hollow structure of the chin rest support rod and moves upwards or downwards in the hollow structure.
The fixed end of the motor is fixed on the mounting plate through the mounting seat, and the rotating end of the motor is in transmission connection with the lead screw through the coupler.
The lead screw is fixed on the mounting plate through a fixing frame, the fixing frame is sleeved outside the lead screw, a bearing is arranged between the lead screw and the fixing frame, and the lead screw is rotatably connected with the fixing frame through the bearing.
The upper travel switch and the lower travel switch are fixed on the mounting plate through the mounting frame and are mounted on the side edge of the chin rest support rod; the lower edge of the chin rest support rod is provided with a travel switch blocking piece used for touching a travel switch.
The jaw support device comprises a jaw support supporting rod and a linear bearing, wherein the jaw support supporting rod further comprises the linear bearing sleeved outside the upper end portion of the jaw support supporting rod, the linear bearing is fixed in a linear bearing fixing seat, and the linear bearing fixing seat is fixed on a mounting plate.
Has the advantages that: the utility model discloses take elevating system in chin rest, elevating system simple structure drives chin rest bracket along vertical reciprocating motion through the positive reverse motion of motor to guarantee reciprocating of patient's head in the certain limit, perhaps be applicable to different patients' detection.
Drawings
FIG. 1 is a schematic view of the chin bar being secured to the equipment housing;
FIG. 2 is a schematic view of a chin rest configuration;
FIG. 3 is an exploded view of the lift mechanism;
FIG. 4 is a schematic structural view of the lifting mechanism;
FIG. 5 is a cross-sectional view of the lift mechanism;
fig. 6 is a connection relationship diagram of the lead screw, the lead screw nut, and the chin bar support.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings and the specific embodiments.
As shown in fig. 1 to 6, the utility model discloses chin rest 2 that can rise and fall automatically, chin rest 2 is fixed on ophthalmic apparatus casing 1; the chin rest 2 comprises a chin rest base 5 and a front shell 4 covering the front side of the chin rest base 5 (a bulge at one end of the front shell 4 is embedded into a clamping groove corresponding to the chin rest base 5, then the bottom of the front shell 4 is rotationally aligned relative to the chin rest base 5, the other end of the front shell 4 is covered on the chin rest base 5, and the bottom of the front shell 4 is fixed with the chin rest base 5 through a screw 3); the chin rest base 5 comprises a cavity 15 with an opening at the front side; the chin rest 2 also comprises a lifting mechanism fixed in the cavity 15; the mounting plate 25 is fixed on the inner side wall of the cavity 15 of the chin rest base 5, and the mounting plate 25 is provided with a chute structure 46; the lifting mechanism comprises a motor 26, a screw rod 27 fixedly connected with a rotating shaft 38 of the motor 26 and a screw rod nut 41 sleeved outside the screw rod 27; the lifting mechanism further comprises a chin rest support rod 28 which is sleeved outside the screw rod nut 41 and is fixedly connected with the screw rod nut 41, the chin rest support rod 28 is of a hollow structure, and the screw rod 27 moves up and down relative to the chin rest support rod 28 in a cavity 49 of the chin rest support rod 28; a pin 47 is arranged on the side wall of the chin rest support bar 28, the pin 47 is embedded into a groove 48 of the chute structure 46, and the pin 47 is connected with the inner side wall of the groove 48 in a sliding manner (the groove 48 is arranged along the vertical direction), namely, one end of the pin 47 is fixed on the side wall of the chin rest support bar 28, and the other end of the pin 47 is embedded into the groove 48 of the chute structure 46 and slides relative to the groove 48; a chin rest bracket 16 is fixed to the upper end of the chin rest support bar 28.
The fixed end of the motor 26 is fixed on the mounting plate 25 through a mounting seat 37, and a rotating end rotating shaft 38 of the motor 26 is in transmission connection with the screw rod 27 through a coupler 31; the screw 27 is fixed on the mounting plate 25 through a fixing frame 32, the fixing frame 32 is sleeved outside the screw 27, a bearing is arranged between the screw 27 and the fixing frame 32, and the screw 27 and the fixing frame 32 are rotatably connected through the bearing.
The lifting mechanism further comprises a lower mounting frame 34, an upper mounting frame 44, and a lower travel switch 33 and an upper travel switch 35 which are respectively fixed on the lower mounting frame 34 and the upper mounting frame 44, the lower mounting frame 34 and the upper mounting frame 44 are fixed on the mounting plate 25, and the upper travel switch 35 and the lower travel switch 33 are mounted on the side edge of the chin bar support bar 28 through the mounting frames.
The lifting mechanism further comprises a linear bearing 39 (the linear bearing 39 plays a guiding role in the vertical movement process of the chin rest support rod 28) sleeved outside the upper end portion of the chin rest support rod 28, the linear bearing 39 is fixed in a linear bearing fixing seat 36, a fixing plate 42 is fixed to the top of the linear bearing fixing seat 36, the linear bearing fixing seat 36 is sealed through the fixing plate 42, and the linear bearing fixing seat 36 is fixed on the mounting plate 25.
When the motor 26 rotates (forward rotation or reverse rotation), the rotating shaft 38 drives the screw rod 27 to rotate through the coupling 31, so that the screw rod nut 41 which is connected with the screw rod 27 through the matching of the internal thread and the external thread moves along the longitudinal direction, and further the chin rest support bar 28 which is fixedly connected with the screw rod nut 41 moves up and down along the groove 48 through the pin 47.
The travel switch blocking piece 43 is fixed at the joint of the chin support rod 28 and the lead screw nut 41 (namely the lower edge of the cylindrical chin support rod 28), the chin support rod 28 touches the upper travel switch 35 and the lower travel switch 33 through the travel switch blocking piece 43 in the longitudinal movement process, the chin support rod 28 is made to reciprocate between the upper travel switch and the lower travel switch through an MCU in the ophthalmological equipment (the motor 26, the upper travel switch 35 and the lower travel switch 33 are respectively connected with the MCU in the ophthalmological equipment through signal lines), and thus the chin support bracket 16 is driven to reciprocate along the longitudinal direction, so that the head of a patient can move up and down in a certain range.
Claims (6)
1. The utility model provides a take elevating system's chin bar which characterized in that: the chin rest comprises a chin rest base and a lifting mechanism arranged in the chin rest base; an installation plate is fixed on the inner side wall of the cavity of the chin rest base, and a vertical sliding groove structure is arranged on the installation plate; the lifting mechanism comprises a motor, a screw rod fixedly connected with a rotating shaft of the motor and a screw rod nut sleeved outside the screw rod; the jaw support structure is characterized by also comprising a jaw support supporting rod which is sleeved outside the screw rod nut and fixedly connected with the screw rod nut, wherein a pin is arranged on the side wall of the jaw support supporting rod, and is embedded into a groove of the chute structure and is in sliding connection with the chute wall; the upper end of the chin support rod is fixed with a chin support bracket.
2. The auto-liftable chin bar of claim 1, wherein: the chin rest support rod is of a hollow structure, and the screw rod extends into the hollow structure of the chin rest support rod and moves upwards or downwards in the hollow structure.
3. The auto-liftable chin bar of claim 1, wherein: the fixed end of the motor is fixed on the mounting plate through the mounting seat, and the rotating end of the motor is in transmission connection with the lead screw through the coupler.
4. The auto-liftable chin bar of claim 1, wherein: the lead screw is fixed on the mounting plate through a fixing frame, the fixing frame is sleeved outside the lead screw, a bearing is arranged between the lead screw and the fixing frame, and the lead screw is rotatably connected with the fixing frame through the bearing.
5. The auto-liftable chin bar of claim 1, wherein: the upper travel switch and the lower travel switch are fixed on the mounting plate through the mounting frame and are mounted on the side edge of the chin rest support rod; the lower edge of the chin rest support rod is provided with a travel switch blocking piece used for touching a travel switch.
6. The auto-liftable chin bar of claim 1, wherein: the jaw support device is characterized by further comprising a linear bearing sleeved outside the upper end portion of the jaw support supporting rod, the linear bearing is fixed in a linear bearing fixing seat, and the linear bearing fixing seat is fixed on the mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023325488.5U CN215079869U (en) | 2020-12-31 | 2020-12-31 | Take elevating system's chin strap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023325488.5U CN215079869U (en) | 2020-12-31 | 2020-12-31 | Take elevating system's chin strap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215079869U true CN215079869U (en) | 2021-12-10 |
Family
ID=79322814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023325488.5U Active CN215079869U (en) | 2020-12-31 | 2020-12-31 | Take elevating system's chin strap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215079869U (en) |
-
2020
- 2020-12-31 CN CN202023325488.5U patent/CN215079869U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |