CN2486985Y - Positioner for telescopic regualtion tube - Google Patents
Positioner for telescopic regualtion tube Download PDFInfo
- Publication number
- CN2486985Y CN2486985Y CN 01246619 CN01246619U CN2486985Y CN 2486985 Y CN2486985 Y CN 2486985Y CN 01246619 CN01246619 CN 01246619 CN 01246619 U CN01246619 U CN 01246619U CN 2486985 Y CN2486985 Y CN 2486985Y
- Authority
- CN
- China
- Prior art keywords
- tube
- locating device
- centring ring
- lens barrel
- cylindrical shell
- 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.)
- Expired - Fee Related
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- Telescopes (AREA)
Abstract
A locating device of telescope adjusting tubes provided by the utility model belongs to the field of telescope, solves the fitting problem between a telescope lens tube and an adjusting tube, and provides a simple-structured and effective locating device. The locating device of telescope adjusting tubes is positioned between the adjusting tube and the lens tube, the adjusting tube consists of an objective lens seat and a tube body that are fixedly connected, the locating device comprises a positioning ring between the tube body and the lens tube, and the locating ring dowel joints the tube body. The end of the tube body is provided with stairs, where the external diameter is decreased, and the locating ring dowel joints the stairs. The locating ring is made of plastics, on which externally convex bars and internally convex bars are arranged alternatively in order that the lens tube and the adjusting tube are in the state of tight fit, which can not only ensure that the forward and backward movements of the adjusting tube relatively save labor, but that the art is simplified and the processing cost of the product is reduced. The product has a simple and reasonable structure, can enhance telescope quality, and has relatively high practical value.
Description
Technical field
The utility model belongs to the locating device of regulating tube in the telescope field, particularly telescope.
Background technology
In telescope, regulate tube and be positioned at telescopical lens barrel.In the telescope use, telescopical focusing is to realize by regulating tube moving forward and backward in lens barrel.Therefore, when telescopical manufacturing, lens barrel with regulate between the tube cooperate can not tension, need leave certain clearance.But in the telescope use, this gap is easy to influence the quality problems of product again.When particularly reusing after telescope is placed a period of time, displacement easily between lens barrel and the adjusting tube influences telescopical normal use.
Summary of the invention
The purpose of this utility model is at the telescope lens barrel and regulates existing matching problem between the tube, the locating device of the effective telescope adjustment tube of a kind of structure tube list is provided.
The locating device of this telescope adjustment tube is arranged between telescopical adjusting tube and the lens barrel, regulates tube and is made up of objective holder that is connected mutually and cylindrical shell, and this locating device comprises the centring ring between cylindrical shell and the lens barrel, and centring ring is socketed in the cylindrical shell outside.
The end of cylindrical shell is provided with step, and the external diameter at step place diminishes, and centring ring is socketed on the step.The outside portion of centring ring also is provided with back-up ring, and back-up ring also is fixed in the step place of cylindrical shell.In this device, back-up ring plays barrier effect, makes the stationkeeping of centring ring, can not break away from cylindrical shell.
Above-mentioned centring ring adopts plastics to make, and its outside is provided with three equally distributed outer convex ribs, and its inboard is provided with three equally distributed inner convex ribs, the alternate setting of outer convex rib and inner convex rib.Side contacts in outer convex rib and the lens barrel, the outer side contacts of inner convex rib and cylindrical shell.Three outer convex ribs and three inner convex ribs are set, help the location.That is to say that even the shape in lens barrel inboard or the cylindrical shell outside or size deviation to some extent, after the compensation by centring ring, lens barrel and cylindrical shell are in relatively-stationary position all the time.
Generally, the centring ring external diameter is less than the internal diameter of lens barrel, and the internal diameter of centring ring is greater than the external diameter at cylindrical shell step place; Simultaneously, the distance at the outside of outer convex rib to centring ring center is greater than the inside radius of lens barrel, and the distance at the inboard of inner convex rib to centring ring center is less than the external radius at cylindrical shell step place.Obviously, make if centring ring is a rigid material, then centring ring can not be placed in lens barrel and regulate between the tube.But, because centring ring adopts plastics to make in the utility model, have certain elasticity, thus not only can realize above-mentioned cooperation, and can make and be in friction tight state between cylindrical shell and the lens barrel.Simultaneously, this state remains constant in the telescope use.
In addition, the outside of objective holder is along being circumferentially with a rib, and the lens barrel inboard is provided with equally distributed tibet cinnamon bark bar vertically corresponding to the position of objective holder.Between the rib in the objective holder outside and the rib of lens barrel inboard is interference fit, can make the position of objective holder also obtain the location like this.
In the utility model, be provided with centring ring between the cylindrical shell of adjusting tube and the lens barrel, utilize outer convex rib and inner convex rib on the centring ring to make the friction tight state that is in all the time between the two, so not only can make moving forward and backward of adjusting tube more laborsaving, and to lens barrel and the dimension precision requirement reduction of regulating tube, work simplification has reduced the processing cost of product.Adopt the rib that cooperatively interacts between the objective holder of adjusting tube and the lens barrel, also have same effect.This product structure advantages of simple can improve telescopical quality, has higher utility.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a profile synoptic diagram of regulating tube in the utility model.
Fig. 3 is the side view of centring ring in the utility model.
Fig. 4 is the side view of lens barrel in the utility model.
Embodiment
As shown in Figure 1, the utility model comprises lens barrel 1, regulates tube 2, centring ring 3 and back-up ring 4.Regulate tube 2 and be positioned at lens barrel 1, telescopical focusing is to be undertaken by regulating tube 2 moving forward and backward in lens barrel 1.As shown in Figure 2, regulating tube 2 is made up of cylindrical shell 20 and objective holder 21.In the present embodiment, cylindrical shell 20 is connected as a single entity with objective holder 21.Regulating tube cylindrical shell 20 realized with cooperating by centring ring 3 of lens barrel 1.Centring ring 3 adopts plastics to make.There is step 20a the outer end of cylindrical shell 20.The external diameter of step 20a diminishes, and centring ring 3 is socketed in step 20a place.The outside surface of centring ring 3 and inside surface are respectively equipped with the outer convex rib 30 and the inner convex rib 31 of three even distributions and alternate setting, see shown in Figure 3.Because the internal diameter of centring ring 3 is greater than the external diameter at cylindrical shell step 20a place, and the distance at the inboard of inner convex rib 31 to centring ring 3 centers is less than the external radius at cylindrical shell step 20a place, therefore can utilize the elasticity of plastics to make centring ring 3 be inserted in step 20a place, and be interference fit.In the present embodiment, the back-up ring 4 in centring ring 3 outsides connects with the step 20a place of cylindrical shell 20 by screw thread.Back-up ring 4 works to stop centring ring 3, prevents that centring ring 3 breaks away from.On the other hand, because centring ring 3 external diameters are less than the internal diameter of lens barrel 1, and the distance at the outside of outer convex rib 30 to centring ring 3 centers is greater than the inside radius of lens barrel 1, therefore utilize the elasticity of plastics and the design feature of position between two inner convex ribs 31 that outer convex rib 30 is provided with, the adjusting tube 2 that has centring ring 3 also can be placed in the lens barrel 1, and and lens barrel 1 between be interference fit.Obviously, even lens barrel 1 has certain error with the size of regulating tube 2 in process of producing product, this locating device also can be adjusted automatically, makes adjusting tube 2 be in a stable position all the time.
As shown in Figure 1 and Figure 4, the location of regulating objective holder 21 places of tube 2 in the utility model tibet cinnamon bark bar 10 that to be rib 21a by objective holder 21 external circumferential settings and lens barrel 1 inboard be provided with vertically corresponding to the position of objective holder 21 is realized.This tibet cinnamon bark bar 10 in the lens barrel 1 also is equally distributed.Because between the rib 10 of the rib 21a in objective holder 21 outsides and lens barrel 1 inboard be interference fit, the external diameter of certain objective holder 21 is less than the internal diameter of lens barrel 1, so objective holder 21 can not only obtain locating in lens barrel 1, and also has only less resistance when mobile.In addition, the location of objective holder 21 also can reach in opposite mode, promptly in objective holder 21 outsides three equally distributed ribs is set vertically, and a rib is circumferentially established in the edge, position in lens barrel 1 inboard corresponding to objective holder 21, and its principle is just the same.
Claims (7)
1, a kind of locating device of telescope adjustment tube, be arranged between telescopical adjusting tube (2) and the lens barrel (1), regulating tube (2) is made up of objective holder that is connected mutually (21) and cylindrical shell (20), it is characterized in that this locating device comprises the centring ring (3) between cylindrical shell (20) and the lens barrel (1), centring ring (3) is socketed in cylindrical shell (20) outside.
2, the locating device of telescope adjustment tube according to claim 1 is characterized in that the end of described cylindrical shell (20) is provided with step (20a), and the external diameter that step (20a) is located diminishes, and centring ring (3) is socketed on the step (20a).
3, the locating device of telescope adjustment tube according to claim 2 is characterized in that the outside portion of described centring ring (3) is provided with back-up ring (4), and the step (20a) that back-up ring (4) is fixed in cylindrical shell (20) is located.
4, according to the locating device of claim 1,2 or 3 described telescope adjustment tubes, it is characterized in that described centring ring (3) adopts plastics to make, its outside is provided with three equally distributed outer convex ribs (30), its inboard is provided with three equally distributed inner convex ribs (31), outer convex rib (30) and the alternate setting of inner convex rib (31).
5, the locating device of telescope adjustment tube according to claim 4 is characterized in that the internal diameter of described centring ring (3) external diameter less than lens barrel (1), and the external diameter that the internal diameter of centring ring (3) is located greater than cylindrical shell step (20a); Simultaneously, the distance at the outside of outer convex rib (30) to centring ring (3) center is greater than the inside radius of lens barrel (1), and the external radius that the inboard of inner convex rib (31) is located less than cylindrical shell step (20a) to the distance at centring ring (3) center.
6, according to the locating device of claim 1,2 or 3 described telescope adjustment tubes, the outside that it is characterized in that described objective holder (21) is along being circumferentially with a rib (21a), and the inboard position corresponding to objective holder (21) of lens barrel (1) is provided with equally distributed tibet cinnamon bark bar (10) vertically.
7, according to the locating device of claim 1,2 or 3 described telescope adjustment tubes, it is characterized in that described three the equally distributed ribs that outside objective holder (21), are provided with vertically, circumferentially establish a rib on the inboard edge, position of lens barrel (1) corresponding to objective holder (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01246619 CN2486985Y (en) | 2001-07-17 | 2001-07-17 | Positioner for telescopic regualtion tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01246619 CN2486985Y (en) | 2001-07-17 | 2001-07-17 | Positioner for telescopic regualtion tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2486985Y true CN2486985Y (en) | 2002-04-17 |
Family
ID=33657603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01246619 Expired - Fee Related CN2486985Y (en) | 2001-07-17 | 2001-07-17 | Positioner for telescopic regualtion tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2486985Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890064A (en) * | 2012-10-15 | 2013-01-23 | 上海宝英光电科技有限公司 | Emitting and receiving telescope structure of automatic monitoring system of environment air quality |
| CN109595984A (en) * | 2018-12-27 | 2019-04-09 | 中国人民解放军陆军工程大学 | Sighting device |
-
2001
- 2001-07-17 CN CN 01246619 patent/CN2486985Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890064A (en) * | 2012-10-15 | 2013-01-23 | 上海宝英光电科技有限公司 | Emitting and receiving telescope structure of automatic monitoring system of environment air quality |
| CN109595984A (en) * | 2018-12-27 | 2019-04-09 | 中国人民解放军陆军工程大学 | Sighting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |