CN210955740U

CN210955740U - Optical lens assembly convenient for adjusting distance

Info

Publication number: CN210955740U
Application number: CN201822253292.6U
Authority: CN
Inventors: 贾平平
Original assignee: Shenzhen Unicomp Technology Co ltd
Current assignee: Shenzhen Unicomp Technology Co ltd; Weinan Normal University
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-07-07
Anticipated expiration: 2028-12-29

Abstract

The utility model discloses an optics lens subassembly convenient to spacing adjusts, be provided with drive mechanism between guide block and the transfer line, and be provided with the elastic extrusion part between guide block and the guide rail. The light source projects on the projection screen through the middle convex lens, when needing to change the focal length, the large distance moves, directly lift the convex lens, the convex lens drives the bracing piece, thereby drive the guide block to shift up, overcome the elasticity of spring, thereby make the ejector pad roll-off push away the groove, so alright remove with controlling, carry out large distance regulation, quicker, after reaching the position, loosen, the lower extreme of ejector pad is arc, the transfer line between two adjacent circles of push away grooves also becomes arc, be convenient for the ejector pad roll-in draw-in groove, rotate the rotating part, it is rotatory to drive the transfer line and push away the groove, the guide rail restriction guide block back-and-forth movement, screw transmission is more steady slow, be convenient for observe the demonstration result, more clear, it is more convenient to rotate, just so can accomplish quick and steady both combine, the.

Description

Optical lens assembly convenient for adjusting distance

Technical Field

The utility model relates to an optics lens subassembly interval adjusts convenient field, specifically is an optics lens subassembly convenient to spacing.

Background

Optical lenses are known to be useful in many fields, such as telescopes, cameras, and convex lens imaging where we contact at school, for lenticular imaging, the problem of focal length is demonstrated by varying the distance, which sometimes requires large distance adjustments, such as doubling the distance, sometimes requiring fine adjustments, slowly changing the position, observing the projection changes, however, many convex lens demonstration devices on the market generally adopt a sliding groove to directly slide, which is relatively fast, such as a novel convex lens imaging demonstration device with the publication number of CN207833756U, however, when in slow demonstration, the hand is slowly pinched to slide, which is not easy, and the thread transmission changes the position of the convex lens, which is slow, and is convenient for observing the demonstration effect, however, in the case of fast movements, it is inconvenient, and for this reason, a convex lens which combines the advantages of both and is easy to adjust in use is required.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an optical lens subassembly convenient to spacing to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an optical lens assembly convenient for adjusting the spacing comprises a convex lens, wherein the convex lens is fixed on a guide rail at the lower side through a support rod at the lower end, and a lamp source and a projection screen which are matched with the convex lens for use are respectively arranged at the left side and the right side of the upper end of the guide rail;

the guide rail is inside hollow shell form, and rotates between the inner chamber left and right sides wall of guide rail and be connected with the transfer line, the one end of transfer line is passed the guide rail and is connected with the rotating part, the lower extreme of bracing piece is gone deep into and is connected with the guide block in the guide rail, and the upper end of guide rail set up with the bracing piece about the spout that sets up, be provided with drive mechanism between guide block and the transfer line, and be provided with the elastic extrusion part between guide block and the guide rail.

Preferably, the rotating member is in the shape of a pie.

Preferably, the transmission mechanism comprises a pushing groove which is formed in the circumferential direction of the transmission rod and is spirally arranged along the length direction, the lower end of the guide block is provided with a pushing block which is connected with the pushing groove in a clearance fit mode, and the pushing block is in an inclined shape matched with the pushing groove.

Preferably, the part of the transmission rod between two adjacent circles of pushing grooves is in the shape of a circular arc with concave left and right sides, and the lower end of the pushing block is in the shape of a circular arc with convex left and right ends and front and rear ends.

Preferably, the elastic extrusion part is a spring sleeved on the support rod, and the upper end and the lower end of the spring respectively abut against the top end of the inner cavity of the guide rail and the upper end of the guide block.

Compared with the prior art, the beneficial effects of the utility model are that: the light source projects on the projection screen through the middle convex lens, when needing to change the focal length, the large distance moves, directly lift the convex lens, the convex lens drives the bracing piece, thereby drive the guide block to shift up, overcome the elasticity of spring, thereby make the ejector pad roll-off push away the groove, so alright remove with controlling, carry out large distance regulation, quicker, after reaching the position, loosen, the lower extreme of ejector pad is arc, the transfer line between two adjacent circles of push away grooves also becomes arc, be convenient for the ejector pad roll-in draw-in groove, rotate the rotating part, it is rotatory to drive the transfer line and push away the groove, the guide rail restriction guide block back-and-forth movement, screw transmission is more steady slow, be convenient for observe the demonstration result, more clear, it is more convenient to rotate, just so can accomplish quick and steady both combine, the.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a top view of the present invention;

fig. 4 is a top view of the transmission rod of the present invention;

FIG. 5 is an enlarged view of the connection between the push block and the slide block of the present invention;

fig. 6 is a left enlarged view of the connection between the push block and the slide block of the present invention.

In the figure: 1 convex lens, 11 guide rails, 2 transmission rods, 21 rotating parts, 22 guide blocks, 23 push grooves, 24 push blocks and 25 springs.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a technical solution of an optical lens assembly for adjusting a distance conveniently: the utility model provides an optical lens subassembly convenient to spacing, includes convex lens 1, and convex lens 1 fixes on the guide rail 11 of downside through the bracing piece of lower extreme, and the upper end left and right sides of guide rail 11 is provided with respectively and cooperates lamp source and the projection screen of using with convex lens.

The guide rail 11 is in a hollow shell shape, a transmission rod 2 is rotatably connected between the left wall and the right wall of the inner cavity of the guide rail 11, one end of the transmission rod 2 penetrates through the guide rail 11 to be connected with a rotating part 21, the rotating part 21 is in a cake shape and is convenient to hold and rotate, the lower end of the support rod extends into the guide rail 11 to be connected with a guide block 22, the upper end of the guide rail 11 is provided with a sliding groove which is arranged on the left and the right corresponding to the support rod, a transmission mechanism is arranged between the guide block 22 and the transmission rod 2, the transmission mechanism comprises a pushing groove 23 which is arranged on the circumference of the transmission rod 2 and is spirally arranged along the length direction, and the lower end of the guide block 22 is provided with a push block 24 which is in clearance fit with the push groove 23, the clearance fit is convenient for the push block 24 to be put in, the spiral push groove 23 is prevented from clamping the push block 24, the connection of the push groove 23 to the transmission rod 2 is here similar to a threaded spindle, and the push block 24 is inclined in accordance with the push groove 23.

The position of the transmission rod 2 between two adjacent circles of pushing grooves 23 is in the shape of a circular arc with concave left and right sides, so that the pushing block 24 can slide in conveniently, the lower end of the pushing block 24 is in the shape of a circular arc with convex left and right ends and convex front and back ends, the concave left and right ends are in the shape of a sliding pushing groove 23 conveniently, the concave front and back ends prevent the pushing block 24 from being clamped by the front and back ends of the spiral pushing groove 23, so that the pushing block cannot be inserted into the pushing groove, an elastic extrusion part is arranged between the guide block 22 and the guide rail 11, the elastic extrusion part is a spring 25 sleeved on the support rod, the upper end and the lower end of the spring 25 respectively support the top end of the inner cavity of the guide rail 11 and the upper end of the guide block 22, and the guide.

The light source projects on the projection screen through the middle convex lens 1, when focal length needs to be changed, the large-distance movement is realized, the convex lens 1 is directly lifted, the convex lens 1 drives the supporting rod, the guide block 22 is driven to move upwards, the elasticity of the spring 25 is overcome, the push block 24 slides out of the push groove 23, the left and right movement can be realized, the large-distance adjustment is realized, the speed is higher, after the position is reached, the loosening is realized, the lower end of the push block 24 is in a circular arc shape, the transmission rod 2 between every two adjacent circles of push grooves 23 is also in a circular arc shape, the push block 24 is convenient to slide into the clamping groove 23, the rotating part 21 is rotated, the transmission rod 2 and the push groove 23 are driven to rotate, the guide rail 11 limits the guide block 22 to move back and forth, the thread transmission is more stable and slow, the demonstration result is convenient to observe.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An optical lens assembly convenient for adjusting the distance comprises a convex lens (1), wherein the convex lens (1) is fixed on a guide rail (11) at the lower side through a support rod at the lower end, and a light source and a projection screen which are matched with the convex lens for use are respectively arranged at the left side and the right side of the upper end of the guide rail (11);

the method is characterized in that: guide rail (11) are inside hollow shell form, and rotate between the inner chamber left and right sides wall of guide rail (11) and be connected with transfer line (2), the one end of transfer line (2) is passed guide rail (11) and is connected with rotating part (21), the lower extreme of bracing piece is deepened and is connected with guide block (22) in guide rail (11), and the upper end of guide rail (11) set up with the bracing piece correspond about the spout that sets up, be provided with drive mechanism between guide block (22) and transfer line (2), and be provided with the elastic extrusion part between guide block (22) and guide rail (11).

2. An optical lens assembly for facilitating pitch adjustment according to claim 1, wherein: the rotating part (21) is shaped like a cake.

3. An optical lens assembly for facilitating pitch adjustment according to claim 1, wherein: the transmission mechanism comprises a pushing groove (23) which is formed in the circumferential direction of the transmission rod (2) and is spirally arranged along the length direction, a pushing block (24) which is connected with the pushing groove (23) in a clearance fit mode is arranged at the lower end of the guide block (22), and the pushing block (24) is inclined and is matched with the pushing groove (23).

4. An optical lens assembly for facilitating pitch adjustment according to claim 3, wherein: the part of the transmission rod (2) between two adjacent circles of pushing grooves (23) is in the shape of a circular arc with concave left and right sides, and the lower end of the pushing block (24) is in the shape of a circular arc with convex left and right ends and front and back ends.

5. An optical lens assembly for facilitating pitch adjustment according to any of claims 1 to 4, wherein: the elastic extrusion component is a spring (25) sleeved on the supporting rod, and the upper end and the lower end of the spring (25) are respectively abutted against the top end of the inner cavity of the guide rail (11) and the upper end of the guide block (22).