CN219538263U - Diopter adjusting device of fundus camera - Google Patents

Abstract

The utility model provides a refraction adjusting device of a fundus camera, which comprises two mounting frames, wherein the tops of the two mounting frames are fixedly connected with connecting blocks, the inner sides of the mounting frames are fixedly connected with refraction adjusting mechanisms, and the tops of the mounting frames are provided with interval adjusting mechanisms; according to the utility model, the threaded rod is rotated under the action of meshing of the first bevel gear and the second bevel gear by rotating the adjusting knob at one end of the rotating rod, and the threaded connecting block is driven to move under the action of rotation of the threaded rod, so that the position of the lens frame fixedly connected with the top of the threaded connecting block and the lens in the lens barrel is adjusted, the diopter adjusting range of the fundus camera is enlarged by adjusting the position of the lens, and a worker can conveniently take clearer pictures.

Description

Diopter adjusting device of fundus camera

Technical Field

The utility model belongs to the field of fundus cameras, and particularly relates to a refraction adjusting device of a fundus camera.

Background

The fundus camera is mainly used for shooting retina images of human eyes so as to facilitate medical staff to check fundus diseases or assist the medical staff to judge the conditions of other organs. The blood vessel of the fundus is the only blood vessel directly observed through the body surface of a human body, and medical staff can check whether the optical nerve, retina, choroid and refractive medium of the fundus have lesions or not through a fundus camera.

In the using process of the existing fundus camera, the definition of the photographed picture possibly cannot reach the degree wanted by a user due to the small diopter adjusting range of the fundus camera, so that a worker is difficult to obtain wanted information from the picture, and the user needs to photograph again, which is quite inconvenient.

In summary, the present utility model provides a refractive adjustment device for a fundus camera to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a diopter adjusting device of a fundus camera, which aims to solve the problems that in the background art, the diopter adjusting range of the fundus camera is smaller in the using process of the prior fundus camera, so that the definition of a shot photo possibly cannot reach the degree wanted by a user, and therefore, a worker is difficult to obtain wanted information from the photo, and the shot information needs to be shot again, so that the problem is quite inconvenient;

in order to achieve the above purpose, the present utility model provides the following technical solutions: the refraction adjusting device of the fundus camera comprises two mounting frames, wherein the tops of the two mounting frames are fixedly connected with connecting blocks, the inner sides of the mounting frames are fixedly connected with refraction adjusting mechanisms, and the tops of the mounting frames are provided with interval adjusting mechanisms.

Preferably, the refraction adjustment mechanism comprises a lens cone, a lens frame, a lens, a first mounting groove, a threaded rod, a first bevel gear, a rotating rod, a second bevel gear, a second mounting groove, a connecting rod, a connecting sleeve and a threaded connecting block, wherein the lens cone is fixedly connected with the inner wall of the mounting frame.

Preferably, the lens frame is arranged on the inner side of the lens barrel, the lens is arranged on the inner side of the lens frame, the first mounting groove is formed in the lens barrel, the threaded rod is arranged in the first mounting groove, the first bevel gear is connected with one end of the threaded rod, and one end of the rotating rod penetrates through and is inserted into the lens barrel.

Preferably, the second bevel gear is connected with one end of the rotating rod, the second mounting groove is formed in the lens barrel, the connecting rod is arranged in the second mounting groove, the connecting sleeve is sleeved on the outer wall of the connecting rod, and the threaded connecting block is in threaded connection with the outer wall of the threaded rod.

Preferably, the first bevel gear meshes with the second bevel gear.

Preferably, the interval adjustment mechanism comprises a mounting seat, a bidirectional threaded rod and a moving block, wherein the mounting seat is arranged at the top of the two mounting frames, one end of the bidirectional threaded rod penetrates through the inside of the mounting seat, and the moving block is in threaded connection with the outer wall of the bidirectional threaded rod.

Preferably, one end of the bidirectional threaded rod forms a rotary connection structure with the mounting seat through a bearing.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the threaded rod is rotated under the action of meshing of the first bevel gear and the second bevel gear by rotating the adjusting knob at one end of the rotating rod, and the threaded connecting block is driven to move under the action of rotation of the threaded rod, so that the position of the lens frame fixedly connected with the top of the threaded connecting block and the lens in the lens barrel is adjusted, the diopter adjusting range of the fundus camera is enlarged by adjusting the position of the lens, and a worker can conveniently take clearer pictures.

2. According to the utility model, the adjusting knob at one end of the bidirectional threaded rod is rotated to drive the bidirectional threaded rod to rotate, so that the two moving blocks in threaded connection with the outer wall of the bidirectional threaded rod move oppositely or oppositely, and the distance between the two mounting frames at the bottom is adjusted, so that the diopter adjusting device can use fundus cameras with different sizes, and the practicability is improved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of a front cross-sectional structure of the present utility model;

FIG. 3 is a schematic side sectional view of the present utility model;

fig. 4 is an enlarged schematic view of the present utility model a.

In the figure:

1. a mounting frame; 2. a connecting block; 3. a refractive adjustment mechanism; 4. a spacing adjustment mechanism; 31. a lens barrel; 32. a frame; 33. a lens; 34. a first mounting groove; 35. a threaded rod; 36. a first bevel gear; 37. a rotating lever; 38. a second bevel gear; 39. a second mounting groove; 310. a connecting rod; 311. connecting sleeves; 312. a threaded connecting block; 41. a mounting base; 42. a two-way threaded rod; 43. and (5) moving the block.

Description of the embodiments

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1 to 4, the utility model provides a refraction adjusting device of a fundus camera, which comprises two mounting frames 1, wherein the tops of the two mounting frames 1 are fixedly connected with a connecting block 2, the inner side of the mounting frame 1 is fixedly connected with a refraction adjusting mechanism 3, and the tops of the mounting frames 1 are provided with a spacing adjusting mechanism 4.

Referring to fig. 1-4, the refraction adjusting mechanism 3 includes a lens barrel 31, a lens frame 32, a lens 33, a first mounting groove 34, a threaded rod 35, a first bevel 36, a rotating rod 37, a second bevel 38, a second mounting groove 39, a connecting rod 310, a connecting sleeve 311 and a threaded connecting block 312, the lens barrel 31 is fixedly connected with an inner wall of the mounting frame 1, a mounting block for mounting is fixedly connected with an outer wall of the lens barrel 31 and mounting holes are formed, and the lens barrel 31 is provided with two.

Referring to fig. 1-4, the lens frame 32 is disposed on the inner side of the lens barrel 31, the lens 33 is disposed on the inner side of the lens frame 32, the first mounting groove 34 is formed in the lens barrel 31, the threaded rod 35 is disposed in the first mounting groove 34, two ends of the threaded rod 35 form a rotation connection structure with the lens barrel 31 through bearings, the first bevel gear 36 is connected with one end of the threaded rod 35, one end of the rotation rod 37 is inserted into the lens barrel 31 in a penetrating manner, one end of the rotation rod 37 extends into the first mounting groove 34, and the other end of the rotation rod 37 is fixedly connected with an adjusting knob.

Referring to fig. 1-4, the second conical teeth 38 are connected to one end of the rotating rod 37, the second mounting groove 39 is formed in the lens barrel 31, the connecting rod 310 is disposed in the second mounting groove 39, the connecting sleeve 311 is sleeved on the outer wall of the connecting rod 310, one end of the connecting sleeve 311 is fixedly connected to the top of the lens frame 32, so that the stability of the lens frame 32 is improved by moving the connecting sleeve 311 through the top fixed connection along the connecting rod 310 when moving, the threaded connecting block 312 is in threaded connection with the outer wall of the threaded rod 35, one end of the threaded connecting block 312 is fixedly connected with the bottom of the lens frame 32, and the threaded connecting block 312 drives the lens frame 32 to move in the lens frame 32 when rotating the threaded rod 35, so as to adjust the refractive power.

Referring to fig. 1-4, the first bevel gear 36 is engaged with the second bevel gear 38, and the threaded rod 35 is rotated by the engagement of the first bevel gear 36 with the second bevel gear 38 by rotating the adjusting knob at one end of the rotating rod 37.

Referring to fig. 1-3, the spacing adjustment mechanism 4 includes a mounting seat 41, a bidirectional threaded rod 42 and two moving blocks 43, the mounting seat 41 is disposed at the top of the two mounting frames 1, one end of the bidirectional threaded rod 42 is inserted into the mounting seat 41 in a penetrating manner, the other end of the bidirectional threaded rod 42 is fixedly connected with an adjusting knob, the moving blocks 43 are in threaded connection with the outer wall of the bidirectional threaded rod 42, the moving blocks 43 are provided with two moving blocks, and the two moving blocks 43 are fixedly connected with the connecting blocks 2 at the tops of the two mounting frames 1.

Referring to fig. 1 to 3, one end of the bi-directional threaded rod 42 forms a rotation connection structure with the mounting seat 41 through a bearing, and the bi-directional threaded rod 42 is driven to rotate by rotating an adjusting knob at one end of the bi-directional threaded rod 42, so that two moving blocks 43 in threaded connection with the outer wall of the bi-directional threaded rod 42 move in opposite directions or in opposite directions, and the distance between the two mounting frames 1 at the bottom is adjusted, so that the diopter adjusting device can use fundus cameras with different sizes.

The specific working principle is as follows: as shown in fig. 1 to 4, when the refraction adjusting device for the fundus camera is used, firstly, the refraction adjusting device for the fundus camera is formed by the mounting frame 1, the connecting block 2, the refraction adjusting mechanism 3 and the interval adjusting mechanism 4, the refraction range of the fundus camera can be improved by the refraction adjusting device, the threaded rod 35 is rotated under the action of meshing of the first conical tooth 36 and the second conical tooth 38 by rotating the adjusting knob at one end of the rotating rod 37, the threaded connecting block 312 is driven to move under the action of rotating the threaded rod 35, the position of the lens frame 32 fixedly connected with the top of the threaded connecting block 312 and the lens 33 in the lens barrel 31 is adjusted, the refraction adjusting range of the fundus camera is enlarged by adjusting the position of the lens 33, then the two moving blocks 43 in threaded connection with the outer walls of the bidirectional threaded rod 42 are driven to rotate in opposite directions by rotating the adjusting knob at one end of the bidirectional threaded rod 42, and accordingly, the interval between the two mounting frames 1 at the bottom is adjusted, so that the refraction adjusting device can use fundus cameras with different sizes, and the refraction adjusting device is characterized by the refraction adjusting device.

The embodiments of the present utility model have been shown and described for the purpose of illustration and description, it being understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made therein by one of ordinary skill in the art without departing from the scope of the utility model.

Claims (7)

1. Refractive adjustment device of fundus camera, comprising two mounting frames (1), characterized in that: the two top fixedly connected with connecting block (2) of installing frame (1), the inboard fixedly connected with diopter adjustment mechanism (3) of installing frame (1), the top of installing frame (1) is provided with interval adjustment mechanism (4).

2. A refractive adjustment apparatus of a fundus camera according to claim 1, wherein: the refraction adjustment mechanism (3) comprises a lens cone (31), a lens frame (32), a lens (33), a first mounting groove (34), a threaded rod (35), first bevel teeth (36), a rotating rod (37), second bevel teeth (38), second mounting grooves (39), a connecting rod (310), a connecting sleeve (311) and a threaded connecting block (312), and the lens cone (31) is fixedly connected with the inner wall of the mounting frame (1).

3. A refractive adjustment apparatus of a fundus camera according to claim 2, wherein: the lens frame (32) is arranged on the inner side of the lens barrel (31), the lens (33) is arranged on the inner side of the lens frame (32), the first mounting groove (34) is formed in the lens barrel (31), the threaded rod (35) is arranged in the first mounting groove (34), the first bevel gear (36) is connected with one end of the threaded rod (35), and one end of the rotating rod (37) penetrates through the lens barrel (31).

4. A refractive adjustment apparatus of a fundus camera according to claim 2, wherein: the second bevel gear (38) is connected with one end of the rotating rod (37), the second mounting groove (39) is formed in the lens barrel (31), the connecting rod (310) is arranged in the second mounting groove (39), the connecting sleeve (311) is sleeved on the outer wall of the connecting rod (310), and the threaded connecting block (312) is in threaded connection with the outer wall of the threaded rod (35).

5. A refractive adjustment apparatus of a fundus camera according to claim 2, wherein: the first bevel gear (36) meshes with the second bevel gear (38).

6. A refractive adjustment apparatus of a fundus camera according to claim 1, wherein: the interval adjustment mechanism (4) comprises a mounting seat (41), a bidirectional threaded rod (42) and a moving block (43), wherein the mounting seat (41) is arranged at the top of two mounting frames (1), one end of the bidirectional threaded rod (42) penetrates through the inside of the mounting seat (41), and the moving block (43) is in threaded connection with the outer wall of the bidirectional threaded rod (42).

7. A refractive adjustment apparatus of a fundus camera according to claim 6, wherein: one end of the bidirectional threaded rod (42) and the mounting seat (41) form a rotary connection structure through a bearing.