Double-speed focusing mount for astronomical telescope

Abstract

The application relates to a double-speed focusing seat for an astronomical telescope, belonging to the technical field of astronomical telescope accessories, which comprises a focusing base, a coarse adjustment hand wheel and a fine adjustment hand wheel rotatably installed on the focusing base, the focusing base is used for being installed on a telescope barrel, a recess is arranged on the focusing base, and a protrusion on the outer wall of the telescope barrel is inserted into the recess. The application can enable an individual model astronomical telescope with a single-speed focusing seat to be installed with a double-speed focusing seat, so that the focusing is more rapid and accurate; the distance between the focusing base and the telescope barrel can be adjusted by a top screw, the cooperation between a transmission gear and an eyepiece can be adjusted, and the adaptability of the double-speed focusing seat after installation is improved.

Description

Technical Field

[0001] This application relates to the field of astronomical telescope accessories technology, and in particular to a dual-speed focusing mount for astronomical telescopes. Background Technology

[0002] Dual-speed focusing mounts are installed on the telescope tube for focusing, making observations clearer and more stable. Some telescope models have a single-speed focusing mount connected to the tube. This mount has a protrusion with an internal directional groove that communicates with the inside of the telescope tube. The rack on the eyepiece is located within this groove, allowing the eyepiece to be moved and focused when the single-speed focusing mount is adjusted.

[0003] Because the dual-speed focusing mount has a relatively large internal structure, it is quite wide. However, due to the presence of protrusions, this model of telescope is not compatible with conventional dual-speed focusing mounts. The protrusions interfere with conventional dual-speed focusing mounts, causing some models of astronomical telescopes to only be able to use single-speed focusing mounts, which in turn affects the focusing accuracy and speed. Utility Model Content

[0004] To address at least one of the aforementioned problems, this application provides a dual-speed focusing mount for astronomical telescopes.

[0005] This application provides a dual-speed focusing mount for an astronomical telescope, which adopts the following technical solution:

[0006] A dual-speed focusing mount for an astronomical telescope includes a focusing base, a coarse adjustment handwheel and a fine adjustment handwheel rotatably mounted on the focusing base. The focusing base is used to mount on the telescope tube. A clearance groove is provided on the focusing base, and a protrusion on the outer wall of the telescope tube is inserted into the clearance groove.

[0007] Optionally, the focusing base is provided with a transmission gear that drives the eyepiece to move, and the coarse adjustment handwheel or the fine adjustment handwheel can drive the transmission gear to rotate after rotation.

[0008] Optionally, the focusing base is provided with a notch or groove that exposes the transmission gear to the outside, and the clearance groove is in communication with the notch or groove.

[0009] Optionally, the bottom of the notch is threaded with a set screw for adjusting the gap between the focusing base and the lens barrel, and the end of the set screw abuts against the lens barrel.

[0010] Optionally, the edge of the notch is provided with a conforming curved surface that conforms to the lens barrel.

[0011] Optionally, the focusing base is provided with bolt holes, and a connecting bolt for mounting the focusing base to the lens barrel is inserted into the bolt holes.

[0012] Optionally, there are two coarse adjustment handwheels, which are symmetrically connected to both ends of the focusing base.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] When installing a dual-speed focusing mount on a telescope with a protrusion on the outer wall of the telescope tube and a single-speed focusing mount, the protrusion can be inserted into the clearance groove so that the protrusion does not interfere with the focusing base. This allows the dual-speed focusing mount to be installed on the telescope with the above structure, making the focusing of the above telescope more convenient, faster and more accurate.

[0015] The notch and slot design allows the transmission gear to be exposed to the outside for better engagement with the eyepiece;

[0016] The conforming curved surface allows the focusing base to fit better with the lens barrel after installation, increasing the contact area between the focusing base and the lens barrel, thereby improving the stability of the focusing base after installation.

[0017] After the set screw is adjusted to the desired length, it can abut against the lens barrel, allowing the distance between the adjustment base and the lens barrel to be adjusted, and the engagement between the transmission gear and the eyepiece to be adjusted, thereby improving the adaptability of the dual-speed focusing mount after installation. Attached Figure Description

[0018] Figure 1 This is a diagram showing the assembly structure of the single-speed focusing mount and the lens barrel.

[0019] Figure 2 This is a structural diagram of the cooperation between the dual-speed focusing mount and the lens barrel in an embodiment of this application.

[0020] Figure 3 This is a structural diagram of the dual-speed focusing mount in the embodiments of this application.

[0021] Figure 4 This is an exploded view of the dual-speed focusing mount and set screw in the embodiment of this application.

[0022] Explanation of reference numerals in the attached drawings: 1. Focusing base; 11. Relief groove; 12. Drive shaft; 13. Drive gear; 14. Notch groove; 15. Fitting curved surface; 16. Threaded hole; 17. Set screw; 18. Bolt hole; 2. Coarse adjustment handwheel; 3. Fine adjustment handwheel. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0024] Reference Figure 1The lens barrel is equipped with a single-speed focusing mount, which has a protrusion on the side of the lens barrel with a smaller diameter. The protrusion is integrally formed with the lens barrel. The single-speed focusing mount does not contact the protrusion and is fixed to the lens barrel by bolts.

[0025] This application discloses a dual-speed focusing mount for an astronomical telescope. (Refer to...) Figure 2 and Figure 3 The dual-speed focusing mount for astronomical telescopes includes a focusing base 1, a coarse adjustment handwheel 2, and a fine adjustment handwheel 3. The focusing base 1 is mounted on the telescope tube. Both the coarse adjustment handwheel 2 and the fine adjustment handwheel 3 are rotatably mounted on the focusing base 1 to drive the eyepiece movement for focusing. The focusing base 1 has a clearance groove 11, into which a protrusion on the outer wall of the telescope tube is inserted. The protrusion does not interfere with the focusing base 1, thus allowing the dual-speed focusing mount to be mounted on the aforementioned astronomical telescope.

[0026] Reference Figure 3 A drive shaft 12 is inserted into the adjusting base and is rotatably mounted on the adjusting base. Two coarse adjustment handwheels 2 are provided, symmetrically connected to both ends of the focusing base 1, and located at opposite ends of the drive shaft 12. Both coarse adjustment handwheels 2 are connected to the drive shaft 12; rotating either handwheel will drive the drive shaft 12 to rotate. A drive gear 13 is sleeved and fixedly mounted at the middle of the drive shaft 12; rotating the drive shaft 12 will drive the drive gear 13 to rotate. The eyepiece has a rack that meshes with the drive gear 13, so rotating the drive gear 13 will drive the eyepiece to move. When the coarse adjustment handwheel 2 is rotated, the drive gear 13 rotates at a relatively fast speed, thus achieving coarse adjustment.

[0027] Reference Figure 3 and Figure 4 Two coarse adjustment handwheels 2 are symmetrically arranged, so that either the left or right hand can turn the corresponding coarse adjustment handwheel 2 on the side closest to it, thereby improving the convenience of adjustment.

[0028] Reference Figure 3 The fine adjustment handwheel 3 is located on the side of one of the coarse adjustment handwheels 2 away from the focusing base 1. The fine adjustment handwheel 3 is connected to the drive shaft 12. The focusing base 1 is equipped with a speed reduction device connected to the fine adjustment handwheel 3. After the fine adjustment handwheel 3 rotates, it will drive the drive gear 13 to rotate more slowly, thereby achieving fine adjustment.

[0029] Reference Figure 3 and Figure 4The focusing base has a notch 14 on the side near the lens barrel, and the transmission gear 13 is exposed within the notch 14, allowing the transmission rack to be inserted into the lens barrel and engage with the eyepiece after the focusing base is installed. Furthermore, the notch 14 ensures a closer fit between the focusing base 1 and the outer wall of the lens barrel, thus improving the stability of the focusing base after installation. A clearance groove 11 is located on one side of the notch 14 and communicates with it.

[0030] Reference Figure 3 The notch 14 is designed with a conforming curved surface 15 near the inner edge of the two coarse adjustment handwheels 2, which further makes the adjustment base fit the lens barrel better after installation.

[0031] Reference Figure 3 and Figure 4 The focusing base has multiple threaded holes 16 on the side opposite to the lens barrel. These threaded holes 16 are interconnected with notched grooves 14 and are arranged in a rectangular, spaced pattern. Each threaded hole 16 has a set screw 17 threaded into it. The end of the set screw 17 near the lens barrel passes through the threaded hole 16 and extends into the notched groove 14, while the end of the set screw 17 abuts against the outer wall of the lens barrel. This allows for adjustment of the gap between the focusing base 1 and the lens barrel. Furthermore, this makes the transmission gear 13 more compatible with the eyepiece, improving the compatibility of the dual-speed focusing base after installation.

[0032] Reference Figure 3 and Figure 4 The adjusting base is provided with multiple bolt holes 18 spaced apart on the side away from the lens barrel. Each bolt hole 18 is filled with a connecting bolt, which is threaded onto the lens barrel, thereby allowing the focusing base 1 to be installed on the lens barrel.

[0033] The implementation principle of a dual-speed focusing mount for an astronomical telescope according to an embodiment of this application is as follows: when the dual-speed focusing mount is installed on a telescope tube with a protrusion, the protrusion can be inserted into the clearance groove 11 so that the protrusion does not interfere with the focusing base 1. Then, the length of the extension of the set screw 17 is adjusted to adjust the fit between the transmission gear 13 and the eyepiece. Finally, the focusing base 1 is fixedly installed on the telescope tube using connecting bolts.

[0034] The notch 14 allows the transmission gear 13 to be exposed to the outside for better engagement with the eyepiece, and the fitted curved surface 15 allows the focusing base 1 to fit better with the lens barrel after installation, increasing the contact area after the adjustment base and the lens barrel are connected, thereby improving the stability of the focusing base 1 after installation.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dual-speed focusing mount for an astronomical telescope, characterized in that: It includes a focusing base (1), a coarse adjustment handwheel (2) rotatably mounted on the focusing base (1), and a fine adjustment handwheel (3). The focusing base (1) is used to be mounted on the telescope tube. A clearance groove (11) is provided on the focusing base (1), and a protrusion on the outer wall of the telescope tube is inserted into the clearance groove (11).

2. The dual-speed focusing mount for an astronomical telescope according to claim 1, characterized in that: The focusing base (1) is provided with a transmission gear (13) that drives the eyepiece to move. The coarse adjustment handwheel (2) or the fine adjustment handwheel (3) can drive the transmission gear (13) to rotate after rotation.

3. The dual-speed focusing mount for an astronomical telescope according to claim 2, characterized in that: The focusing base (1) is provided with a notch (14) that exposes the transmission gear (13) to the outside, and the clearance groove (11) is in communication with the notch (14).

4. A dual-speed focusing mount for an astronomical telescope according to claim 3, characterized in that: The bottom of the notch (14) is threaded with a set screw (17) for adjusting the gap between the focusing base (1) and the lens barrel, and the end of the set screw (17) abuts against the lens barrel.

5. A dual-speed focusing mount for an astronomical telescope according to claim 3, characterized in that: The edge of the notch (14) is provided with a fitting curved surface (15) that fits the lens barrel.

6. A dual-speed focusing mount for an astronomical telescope according to claim 1, characterized in that: The focusing base (1) has a bolt hole (18) and a connecting bolt for mounting the focusing base (1) onto the lens barrel is inserted into the bolt hole (18).

7. A dual-speed focusing mount for an astronomical telescope according to claim 1, characterized in that: There are two coarse adjustment handwheels (2), which are symmetrically connected to the two ends of the focusing base (1).

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