CN202131057U - Lifting mechanism for optometry instrument - Google Patents
Lifting mechanism for optometry instrument Download PDFInfo
- Publication number
- CN202131057U CN202131057U CN201120203914U CN201120203914U CN202131057U CN 202131057 U CN202131057 U CN 202131057U CN 201120203914 U CN201120203914 U CN 201120203914U CN 201120203914 U CN201120203914 U CN 201120203914U CN 202131057 U CN202131057 U CN 202131057U
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- China
- Prior art keywords
- lifting
- lifting mechanism
- guide plate
- bearing
- plate
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- Expired - Lifetime
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Abstract
Provided is a lifting mechanism for an optometry instrument. An existing lifting mechanism for the optometry instrument merely adopts a sliding rail to control lifting and descending, and accordingly stability in transportation cannot be guaranteed due to a fact that the existing lifting mechanism is not strong in load bearing performance. Furthermore, users need to spend large force in controlling lifting and descending, and the existing lifting mechanism is poor in operational feel. The lifting mechanism for the optometry instrument is provided to overcome defects in the prior art and is reasonable in structure, convenient to regulate and stable in lifting and descending processes. The lifting mechanism for the optometry instrument is characterized by comprising an upper fixing plate and a lower fixing plate. A guide plate is horizontally positioned between the upper fixing plate and the lower fixing plate, a through hole is arranged on the guide plate, and a lifting column penetrates through the through hole to be connected with the upper fixing plate. A linear bearing is sleeved on the lifting column, the upper end of the linear bearing abuts against the bottom of the guide plate, and the lower end of the lifting column is connected with an elastic reset assembly fixedly connected onto the lower fixing plate. The lifting mechanism for the optometry instrument can save labor and avoid abrasion to parts caused by lifting and descending processes when in use. A guide assembly formed by guide bars and the like is arranged on the lateral side of the lifting column, thereby further guaranteeing stability of lifting and descending processes.
Description
Technical field
The utility model belongs to improved optometry unit parts, especially a kind of lifting mechanism of optometry unit.
Background technology
The lifting mechanism of existing optometry unit is as shown in Figure 1; Comprise underframe 4 ' and tressel 1 '; The both sides of tressel 1 ' have slide rail 2 ', and join through angle bar 10 ' and underframe 4 ', and the rear portion of underframe 4 ' connects a vertical screw mandrel 7 ' that is provided with through bearing seat 5 '; Be nested with a square nut 6 ' on the screw mandrel 7 ', and join with tressel 1 ' through centering post 11 '.The front portion of underframe 4 ' is provided with the positioning seat 12 ' of a placement spring 3 ', and spring 3 ' is placed between the catch positioning seat 12 ' of tressel 1 ' top formation.This lifting mechanism mainly is the up-down of controlling tressel through slide rail, screw mandrel and belt wheel, and spring is used for the up-down power that balancing activity frame top object produces.This mechanism mainly relies on slide rail control to move up and down, and long-time use causes the slide rail abrasion deformation easily, the possibility that entire mechanism is had lean forward; And adopt slide rail control to go up and down merely, because its bearing is not strong, the stability in can not effectively guaranteeing to transport.And in lifting process, the user need spend bigger power control and go up and down, and operating handle is relatively poor.
The utility model content
The utility model provides a kind of lifting mechanism of optometry unit to the defective that prior art exists, and is rational in infrastructure, easy to adjust and go up and down steadily.
For this reason; The utility model is taked following technical scheme: a kind of lifting mechanism of optometry unit; It is characterized in that comprising upper mounted plate and bottom plate; Be horizontally disposed with a guide plate between described upper mounted plate and the bottom plate, have through hole on the guide plate, a lifting column passes through hole and upper mounted plate joins; Be nested with a linear axis on the described lifting column and hold, the upper end of said linear bearing and guide plate bottom offset, and the elastic reset assembly that the lower end of said lifting column and is fixed on the bottom plate joins.
Described elastic reset assembly comprises spring compressor, retracing spring, bearing locating piece, screw rod, bearing and back-up ring; Described screw rod passes bottom plate and a up-down belt wheel joins; Described bearing locating piece is connected with column and is installed on the bottom plate; Bearing and back-up ring are installed in the bearing locating piece; Bearing and screw rod join, and described spring compressor is connected with lifting column and is installed in screw rod top and offsets with the nut that is located in the lifting column, and described retracing spring is located between spring compressor and the bearing locating piece.
The sidepiece that is positioned at lifting column on the said guide plate be provided with one pass guide plate and with upper mounted plate bonded assembly pilot bar, the said pilot bar that is positioned at the guide plate bottom is nested with connection bearing and orienting sleeve outward respectively, orienting sleeve is connected with guide plate
Being provided with one between described bottom plate and the guide plate is nested with at linear bearing and the exterior column of elastic reset assembly.
The connecting portion of described lifting column and upper mounted plate is provided with seal ring.
The outer setting belt wheel back-up ring of said up-down belt wheel.
The periphery of said spring compressor has interior flanging.
The utility model passes through the reasonable combination of lifting column, elastic reset assembly and up-down belt wheel to accomplish the up-down of mechanism, compares and utilizes slide rail to go up and down, and this mechanism is more laborsaving, and can not produce the wearing and tearing to parts because of up-down; Sidepiece at lifting column is provided with the guidance set of being made up of pilot bar etc., guarantees that further lifting process is steady.
Description of drawings
Fig. 1 is the structural representation of existing lifting mechanism;
Fig. 2 is the utility model structural representation;
Among the figure: 1 '. tressel; 2 '. slide rail; 3 '. spring; 4 '. underframe; 5 '. bearing seat; 6 '. square nut; 7 '. screw mandrel; 8 '. the belt wheel back-up ring; 9 '. the up-down belt wheel; 10 '. angle bar; 11 '. the centering post; 12 '. positioning seat; 1. upper mounted plate; 2. seal ring; 3. guide plate; 4. pilot bar; 5. connection bearing; 6. orienting sleeve; 7. linear bearing; 8. column; 9. lifting column; 10. nut; 11. spring compressor; 12. retracing spring; 13. bearing locating piece; 14. screw rod; 15. bearing; 16. back-up ring; 17. bottom plate; 18. belt wheel back-up ring; 19. up-down belt wheel; 20. elastic reset assembly.
The specific embodiment
The lifting mechanism of optometry unit as shown in Figure 2 comprises upper mounted plate 1 and bottom plate 17, is horizontally disposed with a guide plate 3 between upper mounted plate 1 and the bottom plate 17, has through hole on the guide plate 3, and a lifting column 9 passes through hole and upper mounted plate 1 joins.Be nested with a linear axis on the lifting column 9 and hold 7, the upper end of linear bearing 7 and guide plate 3 bottoms offset, and the elastic reset assembly 20 that the lower end of lifting column 9 and is fixed on the bottom plate 17 joins.Elastic reset assembly 20 comprises spring compressor 11, retracing spring 12, bearing locating piece 13, screw rod 14, bearing 15 and back-up ring 16, and screw rod 14 passes bottom plate 17 and a up-down belt wheel 19 joins, the outer setting belt wheel back-up ring 18 of up-down belt wheel 19.Bearing locating piece 13 is mounted on bottom plate 17 upper ends with column 8; Bearing 15 and back-up ring 16 are installed in the bearing locating piece 13; Bearing 15 joins with screw rod 14; Spring compressor 11 is mounted on screw rod 14 tops with lifting column 9 and offsets with the nut 10 that is located in the lifting column 9, and the periphery of spring compressor 11 has interior flanging, and retracing spring 12 is located between spring compressor 11 and the bearing locating piece 13.The sidepiece that is positioned at lifting column 9 on the guide plate 3 be provided with one pass guide plate 3 and with upper mounted plate 1 bonded assembly pilot bar 4, be positioned at the pilot bar 4 outer connection bearing 5 and the orienting sleeves 6 of being nested with respectively of guide plate 3 bottoms, orienting sleeve (6) is connected with guide plate (3).Being provided with one between bottom plate 17 and the guide plate 3 is nested with at linear bearing 7 and elastic reset assembly 20 exterior columns 8.Lifting column 9 is provided with seal ring 2 with the connecting portion of upper mounted plate 1.
What need particularly point out is; The mode of the foregoing description only limits to describe embodiment; But the utility model is confined to aforesaid way incessantly; And those skilled in the art can modify in the scope that does not break away from the utility model in view of the above easily, so the scope of the utility model should comprise the principle that the utility model discloses and the maximum range of new feature.
Claims (7)
1. the lifting mechanism of an optometry unit; It is characterized in that comprising upper mounted plate (1) and bottom plate (17); Be horizontally disposed with a guide plate (3) between described upper mounted plate (1) and the bottom plate (17), guide plate has through hole on (3), and a lifting column (9) passes through hole and upper mounted plate (1) joins; Be nested with a linear axis on the described lifting column (9) and hold (7), the upper end of said linear bearing (7) and guide plate (3) bottom offset, and the elastic reset assembly (20) that the lower end and of said lifting column (9) is fixed on the bottom plate (17) joins.
2. the lifting mechanism of a kind of optometry unit according to claim 1; It is characterized in that described elastic reset assembly (20) comprises spring compressor (11), retracing spring (12), bearing locating piece (13), screw rod (14), bearing (15) and back-up ring (16); Described screw rod (14) passes bottom plate (17) and joins with a up-down belt wheel (19); Described bearing locating piece (13) is connected with column (8) and is installed on the bottom plate (17); Bearing (15) and back-up ring (16) are installed in the bearing locating piece (13); Bearing (15) joins with screw rod (14), and described spring compressor (11) is mounted on screw rod (14) top with lifting column (9) and offsets with the nut (10) that is located in the lifting column (9), and described retracing spring (12) is located between spring compressor (11) and the bearing locating piece (13).
3. the lifting mechanism of a kind of optometry unit according to claim 1 and 2; The sidepiece that it is characterized in that being positioned on the said guide plate (3) lifting column (9) be provided with one pass guide plate (3) and with upper mounted plate (1) bonded assembly pilot bar (4); The said pilot bar (4) that is positioned at guide plate (3) bottom is nested with connection bearing (5) and orienting sleeve (6) respectively outward, and orienting sleeve (6) is connected with guide plate (3).
4. the lifting mechanism of a kind of optometry unit according to claim 3 is characterized in that being provided with between described bottom plate (17) and the guide plate (3) one and is nested with at linear bearing (7) and the exterior column of elastic reset assembly (20) (8).
5. the lifting mechanism of a kind of optometry unit according to claim 1 is characterized in that the described lifting column (9) and the connecting portion of upper mounted plate (1) are provided with seal ring (2).
6. the lifting mechanism of a kind of optometry unit according to claim 2 is characterized in that the outer setting belt wheel back-up ring (18) of said up-down belt wheel (19).
7. the lifting mechanism of a kind of optometry unit according to claim 2 is characterized in that the periphery of said spring compressor (11) has interior flanging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120203914U CN202131057U (en) | 2011-06-16 | 2011-06-16 | Lifting mechanism for optometry instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120203914U CN202131057U (en) | 2011-06-16 | 2011-06-16 | Lifting mechanism for optometry instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202131057U true CN202131057U (en) | 2012-02-01 |
Family
ID=45519834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120203914U Expired - Lifetime CN202131057U (en) | 2011-06-16 | 2011-06-16 | Lifting mechanism for optometry instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202131057U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944327A (en) * | 2015-06-18 | 2015-09-30 | 安庆联泰电子科技有限公司 | Spiral elevating type liquid crystal screen elevator |
-
2011
- 2011-06-16 CN CN201120203914U patent/CN202131057U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944327A (en) * | 2015-06-18 | 2015-09-30 | 安庆联泰电子科技有限公司 | Spiral elevating type liquid crystal screen elevator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120201 |
|
| CX01 | Expiry of patent term |