CN210811618U - Shadowless lamp focusing handle - Google Patents

Abstract

A shadowless lamp focusing handle comprises a focusing part and an end cover, wherein the end cover is fixedly connected with a shadowless lamp shade, the focusing part is positioned at the lower part of the end cover, the focusing part comprises a lower shell and a rotating sleeve, the rotating sleeve is positioned at the upper part of the lower shell, a gear transmission mechanism and an inner support seat are arranged in the rotating sleeve, the gear transmission mechanism is assembled on the inner support seat, the inner support seat is fixedly connected with the lower shell, the gear transmission mechanism comprises an external meshing gear, a linkage gear and an action gear, the external meshing gear is connected with the rotating sleeve, the action gear is connected with a spiral column, and the spiral column is in threaded connection with the shadowless lamp connecting sleeve; the end cover is internally connected with a fixed seat which is sleeved on a spiral column, and the spiral column is arranged to rotate in the fixed seat under the rotation of the action gear. The utility model discloses shadowless lamp focusing handle realizes the camera focusing through rotating whole rotation cover, convenient operation, stable in structure.

Description

Shadowless lamp focusing handle

Technical Field

The utility model relates to a focal length adjustment technical field of shadowless lamp, concretely relates to shadowless lamp focusing handle.

Background

With the continuous development of medical industry, the operating shadowless lamp is more and more applied to various operating rooms and becomes a necessity of the operating rooms. The focus of the shadowless lamp is adjusted by adopting a focusing handle so as to achieve the best operation effect.

Most of the focusing handles used in the prior art comprise a focusing barrel and an end cover, the end cover is fixed on the shadowless lamp, the focusing barrel is arranged at the lower part of the end cover, a threaded rod and a connecting gear are arranged in the focusing barrel, the threaded rod is sleeved in the connecting gear, and the upper part of the threaded rod is in threaded connection with a connecting sleeve at the middle position of the shadowless lamp. The focusing section of thick bamboo outer wall is equipped with a gyro wheel, and the gyro wheel exposes a focusing section of thick bamboo subtotal, and the staff of being convenient for goes rotatoryly, and the gyro wheel is inside to be met through the connecting gear on gear and the threaded rod, through the structure of double gear, and when rotating the gyro wheel, the gyro wheel passes through the transmission of double gear, drives the threaded rod and rotates, and then realizes the change of shadowless lamp center focal distance. Because the hands need to roll the roller frequently, the roller is generally made of light materials, such as plastics, which do not hurt the hands. However, such materials generally have low strength, short service life and poor stability, and are easily damaged. Moreover, since only a small part of the roller is exposed out of the focusing barrel, when a user needs to focus, the user needs to firstly find the position of the roller, which wastes time and is troublesome.

SUMMERY OF THE UTILITY MODEL

Pass through the gyro wheel focusing for solving above-mentioned shadowless lamp focusing handle, troublesome poeration, unstable scheduling problem of structure, the utility model provides a novel shadowless lamp focusing handle realizes the focusing of shadowless lamp, convenient operation, stable in structure through rotating whole rotation cover.

The technical scheme of the utility model as follows:

a focusing handle of a shadowless lamp comprises a focusing portion and an end cover, wherein the focusing portion and the end cover are of an integrated structure or a split structure, the end cover is fixedly connected with a lampshade of the shadowless lamp, the focusing portion is located on the lower portion of the end cover, the focusing portion comprises a lower shell and a rotating sleeve, the rotating sleeve is located on the upper portion of the lower shell, a gear transmission mechanism and an inner support are arranged in the rotating sleeve, the gear transmission mechanism is assembled on the inner support, the inner support is fixedly connected with the lower shell, the gear transmission mechanism comprises an outer meshing gear, a linkage gear and an action gear, the outer meshing gear is connected with the rotating sleeve, the rotating sleeve is a moving part, and when the rotating sleeve rotates, the gear transmission mechanism can be driven to rotate on the inner support. The linkage gears comprise one or more than one and are respectively positioned between the external gear and the action gear, the action gear is connected with the focal length adjusting device, the focal length adjusting device is in threaded connection with the shadowless lamp connecting sleeve, preferably, the focal length adjusting device comprises a spiral column, the outer side of the upper end of the spiral column is provided with threads, and the lower end of the spiral column is provided with a polished rod. The end cover is internally connected with a fixed seat which is sleeved on a polished rod of the focal length adjusting device, and the focal length adjusting device is arranged to rotate in the fixed seat under the rotation of the action gear.

According to the shadowless lamp focusing handle, the external gear does not rotate relative to the rotating sleeve, and the action gear is located at the center of the external gear.

According to the shadowless lamp focusing handle, the middle boss is arranged on the inner side face of the rotating sleeve, the rotating sleeve is divided into an upper space and a lower space, the upper space is used for mounting the gear transmission mechanism, and the lower space is used for mounting the inner support.

Furthermore, the diameter of the lower shell is smaller than that of the rotating sleeve, one part of the inner support is connected with the rotating sleeve, the other part of the inner support is fixedly connected with the lower shell, and when the rotating sleeve rotates, each gear in the gear transmission mechanism on the upper layer can rotate relative to the inner support on the lower layer.

According to the shadowless lamp focusing handle, the inner support is provided with the first boss hole and the second boss hole, the linkage gear is assembled in the first boss hole through the connecting piece and can rotate around the axis of the first boss hole, and the action gear and the focus adjusting device are assembled in the second boss hole.

Preferably, at least one end of the linkage gear and/or the action gear is provided with a boss, so that the linkage gear and/or the action gear can be conveniently inserted into the corresponding boss hole.

According to the shadowless lamp focusing handle, the focal length adjusting device comprises the spiral column, the upper end of the spiral column is inserted into the fixed seat, and the lower end of the spiral column penetrates through the action gear to be connected with the inner support.

As above shadowless lamp focusing handle, the fixing base includes location platform and double-screw bolt mounting hole, the double-screw bolt mounting hole runs through the fixing base, and is preferred, the double-screw bolt mounting hole is the shoulder hole, and the aperture that is close to inboard one end is greater than the rear end aperture, and its size that is close to inboard one end is greater than focus adjusting device size, the focus adjusting device of being convenient for and the mount pad threaded connection of suspension type camera, be equipped with the locating hole on the location platform for the fixed connection of fixing base, end cover and inner support.

According to the shadowless lamp focusing handle, the gasket is arranged between the rotating sleeve and the end cover, and the gasket is sleeved on the focal length adjusting device, so that the bouncing of the action gear along the axial direction is reduced.

According to the shadowless lamp focusing handle, the lower portion of the lower shell is further movably connected with the camera barrel cover, and the rear portion of the camera barrel cover is provided with the camera.

The beneficial effects of the utility model reside in that:

1. the utility model discloses shadowless lamp focusing handle through the rotation that rotates the cover, drives the rotation of gear drive and spiral post, and then adjusts the position of shadowless lamp connecting sleeve on the spiral post, focuses, compares traditional roller type shadowless lamp focusing mode, need not to go specially to seek gyro wheel position, rotates the cover at will, all can realize the focusing function, and it is more convenient to operate.

2. The utility model discloses shadowless lamp focusing handle rotates the cover in through the tertiary gear drive of external gear, drive gear and action gear, will apply on rotating the rotation transmission to the spiral post on the cover, realizes the rotation of spiral post, stable in structure, and the transmission is steady, and life is longer.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.

In the drawings:

FIG. 1 is an isometric view of a focus adjustment handle for a shadowless lamp of embodiment 1;

FIG. 2 is a cross-sectional view of a focus adjustment handle of the shadowless lamp;

FIG. 3 is an isometric view of a rotating sleeve;

FIG. 4 is a cross-sectional view of FIG. 3;

FIG. 5 is a front view of the inner support;

FIG. 6 is an isometric view of the inner mount;

FIG. 7 is an isometric view of an external gear;

FIG. 8 is a schematic structural view of the gear transmission mechanism, wherein (a) is a plan view and (b) is a sectional view;

FIG. 9 is an isometric view of a first gear;

FIG. 10 is a front view of the second gear;

FIG. 11 is an isometric view of a second gear;

FIG. 12 is a cross-sectional view of the support sleeve;

FIG. 13 is an isometric view of a support sleeve;

FIG. 14 is a front view of a cylindrical table;

FIG. 15 is an isometric view of a cylindrical table;

the components represented by the reference numerals in the figures are:

1. the lower shell body comprises a lower shell body, 101, a first fixing hole, 102, a camera cylinder cover, 103, a camera, 2, a rotating sleeve, 201, a middle boss, 3, an end cover, 4, a cylindrical table, 401, a positioning table, 402, a positioning hole, 403, a stud mounting hole, 5, a spiral column, 6, a first gear, 601, a first boss, 7, a second gear, 701, a second boss, 8, an external gear, 9, an internal support, 901, a first boss hole, 902, a second boss hole, 903, a second fixing hole, 904, a third fixing hole, 905, a shaft shoulder, 906, a threading hole, 10, a supporting sleeve, 1001, a third boss, 11 and a gasket.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.

Example 1

Referring to fig. 1 and 2, fig. 1 and 2 are schematic structural diagrams of a focus adjustment handle of a shadowless lamp, which respectively include a cylindrical table 4, an end cover 3, a rotating sleeve 2 and a lower shell 1 from top to bottom, the end cover 3 is fixedly connected with a lampshade of the shadowless lamp, the cylindrical table 4 is located inside the end cover 3 and is fixedly connected with the lower shell 1, the rotating sleeve 2 is a focus adjustment device, a gear transmission mechanism and an inner support 9 are arranged inside the focusing adjustment handle, the gear transmission mechanism is assembled on the inner support 9, the inner support 9 is fixedly connected with the lower shell 1, the gear transmission mechanism includes one or more external meshing gears 8, a linkage gear and an action gear, the linkage gear includes one or more external meshing gears 8 and one or more action gears, the action gear is connected with a focus adjustment device, the external meshing gear 8 is connected with the rotating sleeve 2, the rotating sleeve 2 is a movable member, when the rotating sleeve 2 rotates, the gear transmission mechanism can be driven to rotate on the inner support 9.

Further, the structure of the rotating sleeve 2 is shown in fig. 3 and fig. 4, a circle of middle bosses 201 are arranged on the inner side surface of the rotating sleeve 2, the middle bosses 201 divide the rotating sleeve 2 into an upper space and a lower space, the upper space is used for installing a gear transmission mechanism, and the lower space is used for installing an inner support 9.

Further, the gear transmission mechanism comprises an external gear 8, a first gear 6 and a second gear 7, the specific connection diagram of which is shown in fig. 8, the external gear 8 is an internal gear, the structure of which is shown in fig. 7, and the outer side of which is partially connected with the upper part of the rotating sleeve 2, preferably, the external gear 8 and the rotating sleeve 2 are in transition fit, and the two gears do not rotate relatively. The first gear 6 is located at the center of the external gear 8 and is connected with the external gear 8 through the second gear 7, and when one of the external gear 8, the first gear 6 and the second gear 7 rotates, the other two gears can be linked. The first gear 6 and the second gear 7 are structured as shown in fig. 9 to 11.

Further, the structure of the inner support 9 placed at the lower part of the rotating sleeve 2 is shown in fig. 5 and fig. 6, a ring of shaft shoulder 905 is arranged at the side surface of the inner support 9, and the size of the shaft shoulder 905 is matched with the size of the lower space of the rotating sleeve 2. The shaft shoulder 905 divides the inner support 9 into an upper part and a lower part, wherein the upper part is clamped into the boss 201 in the rotating sleeve 2, so that the gear transmission mechanism is aligned with the upper plane of the inner support 9; the lower part is used for fixedly connecting with the lower shell 1. When the rotating sleeve 2 rotates, each gear in the gear transmission mechanism on the upper layer can rotate relative to the inner support seat 9 on the lower layer.

In this embodiment, the diameter of the lower housing 1 is smaller than that of the rotating sleeve 2, so that the rotating sleeve 2 is exposed to the outside and is convenient to rotate. The upper part of the lower shell 1 is connected with the lower part of the inner support 9, and preferably, the upper part of the lower shell 1 and the lower part of the inner support 9 are respectively provided with a first fixing hole 101 and a second fixing hole 903, which correspond to each other in position, and the lower shell 1 and the inner support 9 can be fixed together by screws.

In this embodiment, the upper plane of the inner support 9 is further provided with a first boss hole 901, a second boss hole 902, a third fixing hole 904 and a threading hole 906, wherein the first boss hole 901 is located in the middle of the inner support 9 and is used for connecting the first gear 6, preferably, the first boss hole 901 is a countersunk hole, see fig. 8, one end of the first gear 6 is provided with a first boss 601, see fig. 9, and the size of the first boss 601 is matched with the size of the countersunk head at the upper portion of the first boss hole 901.

Further, the size of the position of the second boss hole 902 corresponds to the size of the position of the second gear 7 in the gear transmission mechanism in fig. 8, and preferably, one end of the second gear 7 is also provided with a second boss 701, see fig. 10.

Further, a support sleeve 10 penetrates through the second boss hole 902, the support sleeve 10 is as shown in fig. 12 and 13, one end of the support sleeve 10 is provided with a third boss 1001, and the size of the third boss 1001 is larger than the outer size of the second boss 701 of the second gear 7, so as to prevent the second gear 7 from slipping out. The supporting sleeve 10 is inserted into the inner support 9, internal threads are arranged in the supporting sleeve, the supporting sleeve 10 can be fixed on the inner support 9 through screws, and meanwhile, the second gear 7 rotates around the supporting sleeve 10.

Further, the third fixing holes 904 are threaded holes, are scattered on the upper surface of the inner support 9, and are used for fixing with the end cover 3 and the cylindrical table 4 thereon, so as to connect the lower housing 1 and the shadowless lamp together.

In this embodiment, the spiral column 5 is sleeved in the middle of the first gear 6, and when the external gear 8 rotates, the first gear 6 drives the spiral column 5 to rotate through the linkage of the second gear 7.

Further, the structure of the spiral column 5 is shown in fig. 2, the outer side of the upper end of the spiral column is provided with a thread for connecting with a shadowless lamp connecting sleeve, and the lower end of the spiral column is a polished rod which penetrates through the first gear 6 and then is inserted into the inner support 9.

Further, the upper portion of the end cover 3 is provided with a cylindrical table 4, the cylindrical table 4 is structurally shown in fig. 14 and 15 and comprises a positioning table 401 and a stud mounting hole 403, the stud mounting hole 403 is a stepped hole and penetrates through the cylindrical table 4, the hole diameter of one end close to the inner side is larger than that of the rear end, the size of one end close to the inner side is larger than that of the upper portion of the spiral column 5, the spiral column 5 is conveniently in threaded connection with the shadowless lamp connecting sleeve, and preferably, a guide ring is arranged on the outer side of the polished rod portion of the spiral column 5, so that the spiral column 5 can rotate in the cylindrical table 4. The positioning table 401 is provided with a positioning hole 402, the position size of which corresponds to the position size of a third fixing hole 904 on the upper plane of the inner support 9, and the positioning hole is used for fixedly connecting the cylindrical table 4, the end cover 3 and the inner support 9.

Preferably, the end cover 3 and the cylindrical table 4 are located at the center of the shadowless lamp, so that the central focal distance of the shadowless lamp can be conveniently adjusted by the spiral column 5.

In this embodiment, a spacer 11 is disposed between the rotating sleeve 2 and the end cover, and the spacer 11 is sleeved on the spiral column 5 and located above the first gear 6 for reducing the runout of the first gear 6 in the axial direction.

In this embodiment, the lower portion of the lower housing 1 is further movably connected with a camera cylinder cover 102, the camera 103 is mounted at the rear portion of the camera cylinder cover 102, an electric wire of the camera 103 passes through the threading hole 906 on the inner support 9, then is connected to the circuit system of the shadowless lamp after passing through the lower housing 1, and the operation process can be conveniently recorded through the camera system.

Specifically, the upper end of the spiral column 5 is in threaded connection with the shadowless lamp connecting sleeve, the lower end of the spiral column is connected with the first gear 6, when the rotating sleeve 2 is rotated, the external gear 8 pushes the second gear 7 to rotate, the second gear 7 pushes the first gear 6 to rotate, the spiral column 5 in the middle of the first gear 6 rotates immediately, the upper threaded part of the spiral column is close to or far away from the shadowless lamp connecting sleeve, the distance between the camera and the camera 103 is changed, and focusing of the camera is completed.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A shadowless lamp focusing handle comprises a focusing part and an end cover (3), wherein the focusing part and the end cover (3) are of an integrated structure or a split type mechanism, the end cover (3) is fixedly connected with a shadowless lamp shade, the focusing part is positioned at the lower part of the end cover (3), the shadowless lamp focusing handle is characterized in that the focusing part comprises a lower shell (1) and a rotating sleeve (2), the rotating sleeve (2) is positioned at the upper part of the lower shell (1), a gear transmission mechanism and an inner support (9) are arranged in the rotating sleeve, the gear transmission mechanism is assembled on the inner support (9), the inner support (9) is fixedly connected with the lower shell (1), the gear transmission mechanism comprises an outer meshing gear (8), a linkage gear and an action gear, the outer meshing gear (8) is connected with the rotating sleeve (2), the linkage gear comprises one or more gears, and the one or more gears are respectively positioned between the outer meshing gear (8) and the action gear, the action gear is connected with a focal length adjusting device, and the focal length adjusting device is in threaded connection with a shadowless lamp connecting sleeve; the end cover (3) is internally connected with a fixed seat which is sleeved on a focal length adjusting device, and the focal length adjusting device is arranged to rotate in the fixed seat under the rotation of the action gear.

2. The shadowless lamp focusing handle of claim 1, wherein the external gear (8) is non-rotatable relative to the rotating sleeve (2), and the action gear is located in the center of the external gear (8).

3. The focus adjusting handle for the shadowless lamp as claimed in claim 1, wherein the inner support (9) is provided with a first boss hole (901) and a second boss hole (902), the linkage gear is assembled in the first boss hole (901) through a connecting piece, and the action gear and the focus adjusting device are assembled in the second boss hole (902).

4. The shadowless lamp focusing handle of claim 3 wherein at least one end of the interlocking gear and/or the action gear is provided with a boss.

5. The shadowless lamp focusing handle of claim 2 or 3, wherein the inner side surface of the rotating sleeve (2) is provided with a middle boss (201), the rotating sleeve (2) is divided into an upper space and a lower space, the upper space is used for installing a gear transmission mechanism, and the lower space is used for installing an inner support (9).

6. The shadowless lamp focusing handle of claim 5, wherein the diameter of the lower shell (1) is smaller than that of the rotating sleeve (2), and one part of the inner support (9) is connected with the rotating sleeve (2) and the other part is fixedly connected with the lower shell (1).

7. The shadowless lamp focusing handle of claim 1, wherein the focus adjusting device comprises a screw column (5), the upper end of the screw column (5) is inserted into the fixed seat, and the lower end of the screw column passes through the action gear and is connected with the inner support seat (9).

8. The shadowless lamp focusing handle of claim 1, wherein the fixed seat comprises a positioning table (401) and a stud mounting hole (403), the stud mounting hole (403) penetrates through the fixed seat, the size of one end of the stud mounting hole close to the inner side is larger than that of the focal length adjusting device, and a positioning hole (402) is formed in the positioning table (401).

9. The shadowless lamp focusing handle of claim 1, wherein a gasket (11) is arranged between the rotating sleeve (2) and the end cover (3), and the gasket (11) is sleeved on the focal length adjusting device.

10. The shadowless lamp focusing handle of claim 1, wherein a camera barrel cover (102) is movably connected to the lower part of the lower shell (1), and a camera (103) is arranged at the rear part of the camera barrel cover (102).

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