CN210568197U

CN210568197U - Stroke component for focusing of shadowless lamp

Info

Publication number: CN210568197U
Application number: CN201921869125.2U
Authority: CN
Inventors: 孔德辉; 魏长刚
Original assignee: Shandong Chenhong Medical Technology Co ltd
Current assignee: Shandong Chenhong Medical Technology Co ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-05-19
Anticipated expiration: 2029-11-01

Abstract

A stroke component for focusing a shadowless lamp comprises a support sleeve (1), a spiral column (2) and a stroke sleeve (3), wherein the stroke sleeve (3) is sleeved on the spiral column (2), the spiral column (2) and the stroke sleeve (3) are arranged in an inner cavity of the support sleeve (1), the side wall of the stroke sleeve (3) is provided with a stroke screw (32), the stroke screw (32) penetrates through the inner wall of the stroke sleeve (3), the outer diameter of the stroke screw (32) is smaller than or equal to the width of a thread gap of the spiral column (2) so that the tail part of the stroke screw (32) is always positioned in the thread gap, the side wall of the support sleeve (1) is provided with a stroke hole (11), the head of a stroke screw (32) is positioned in the stroke hole (11), the spiral column (2) is rotated to apply force to the stroke screw (32), and the stroke screw (32) drives the stroke sleeve (3) to reciprocate in the support sleeve (1). The utility model discloses shadowless lamp focusing stroke part is small, simple structure, stability are high to the installation is maintained conveniently.

Description

Stroke component for focusing of shadowless lamp

Technical Field

The utility model relates to a shadowless lamp focusing technical field, concretely relates to a stroke part for shadowless lamp focusing.

Background

The shadowless lamp focusing mechanism on the market at present, its principle is that the angle of illumination that changes shadowless lamp pearl through the stroke part, including the shadowless lighting fixture of disc, install focusing mechanism perpendicularly at the center of lighting fixture, erect a strip LED lamp stand on the lighting fixture, the shape is similar to the petal, focusing mechanism is located the center and protrudes, stroke part overlap joint a plurality of lamp stand on the focusing mechanism, articulate the other end of lamp stand with the outer fringe of lighting fixture again, along with the lift of stroke mechanism, the lamp stand is also following its angle of change, stroke mechanism mostly relates to a lead screw structure, the lead screw both ends are fixed, the centre is a double-screw bolt, set up a movable nut on the double-screw bolt, the one end of lamp stand is the overlap joint on this movable nut promptly, rotatory double-screw bolt will make this movable nut go up.

The focusing mechanism of the LED shadowless lamp mentioned in patent CN201310226701.2 also adopts the design, that is, the change of the focusing angle of the shadowless lamp is realized by the lifting of the movable nut in the screw structure, but the screw structure needs more space, especially it needs enough installation height, and cannot be installed on the smaller or thinner shadowless lamp, and the screw structure also needs auxiliary components such as springs, and the difficulty of installation and maintenance is greater, and the screw is vertically installed on the lamp bracket, and the overall stability is also reduced due to its too high gravity center.

An object of the utility model is to prior art's defect and not enough, provide a focusing stroke part of little, simple structure, high and the installation of stability and maintenance convenience's shadowless lamp.

SUMMERY OF THE UTILITY MODEL

For solving current shadowless lamp focusing stroke part occupation space big, the structure is complicated, the troublesome problem is maintained in poor stability and installation, the utility model provides a novel shadowless lamp focusing stroke part, carried out optimal design with the structure of stroke part, the structure is further simplified to support the cover, spiral post and stroke cover, on the basis of guaranteeing compact structure nature, when reducing occupation space, guaranteed its effective stroke distance, its size has rationally controlled, support the shirt rim structure at cover edge and also provide the guarantee for whole structure's firm, it only needs a stroke screw with the installation, it is very convenient.

The technical scheme of the utility model as follows:

a stroke part for focusing of a shadowless lamp comprises a support sleeve, a spiral column and a stroke sleeve, wherein the support sleeve is of a hollow cylinder structure, the support sleeve is installed at the center of a shadowless lamp holder, a stroke part main body is installed on the support sleeve, the stroke sleeve is sleeved on the spiral column, the spiral column and the stroke sleeve are integrally installed in an inner cavity of the support sleeve, when the spiral column is rotated, the spiral structure rotates to drive the stroke sleeve to axially reciprocate, a plurality of installation holes are formed in the side wall of the stroke sleeve, stroke screws are fixedly installed on the installation holes and screwed on the inner wall of the stroke sleeve, the outer diameter of each stroke screw is smaller than or equal to the width of a thread gap of the spiral column, so that the stroke screw can be inserted into the thread gap of the spiral column, the rotation of the threads generates pressure on the stroke screw, and the pressure can be decomposed into radial force and axial force, the axial force can push the stroke screw to move, and the side wall of the support sleeve is also provided with the stroke hole which limits the stroke screw to axially reciprocate only in the stroke hole and offsets the radial force borne by the stroke screw.

According to the stroke component for focusing the shadowless lamp, one end of the support sleeve is provided with the bottom surface, and the center of the bottom surface is provided with the rotating shaft through hole; the spiral column comprises a spiral section and a rotating shaft section, a travel sleeve is sleeved outside the spiral section, the inner diameter of the travel sleeve is slightly larger than the spiral section, and the rotating shaft section penetrates out of the supporting sleeve through a rotating shaft through hole.

According to the stroke component for focusing of the shadowless lamp, the outer diameter of the rotating shaft section is smaller than or equal to the inner diameter of the rotating shaft through hole, so that the rotating shaft section can smoothly penetrate through the rotating shaft through hole, and the rotating shaft section cannot rub with the rotating shaft through hole when rotating.

According to the stroke component for focusing of the shadowless lamp, the top end of the rotating shaft section is connected with the focusing handle, as a preferred embodiment, the focusing handle can be a gear transmission focusing handle, a gear is installed at the top end of the rotating shaft section, the rotation of the focusing handle drives the gear set to rotate, and the gear drives the rotating shaft section to rotate.

According to the stroke component for focusing of the shadowless lamp, the rotating shaft section is provided with the positioning bearing, and the inner ring of the positioning bearing is fixedly connected with the rotating shaft section.

According to the stroke component for focusing of the shadowless lamp, the bottom surface of the support sleeve is further provided with the positioning groove, the positioning groove is formed in the inner side of the rotating shaft through hole, and the positioning groove and the rotating shaft through hole have the same axis. The inner diameter of the positioning groove is matched with the diameter of the outer ring of the positioning bearing, the depth of the positioning groove is larger than or equal to 60% of the height of the positioning bearing, when the rotating shaft section penetrates through the rotating shaft through hole, the positioning bearing is just installed in the positioning groove, the positioning bearing and the positioning groove are tightly combined to ensure that the spiral column and the support sleeve have the same axis, and the spiral column cannot shake in the support sleeve.

The stroke component for focusing the shadowless lamp is characterized in that the stroke hole is long, the width of the stroke hole is 1-2 times of the diameter of the head of the stroke screw, and the direction of the stroke hole is arranged along the axial direction of the support sleeve.

Preferably, the width of the stroke hole is between 1.1 and 1.5 times of the diameter of the head of the stroke screw, so as to avoid radial movement of the stroke screw as much as possible.

The stroke part for focusing the shadowless lamp is characterized in that the supporting sleeve is provided with a fixed skirt edge, the fixed skirt edge is arranged at one end, without the bottom surface, of the supporting sleeve, a plurality of fixing holes are formed in the fixed skirt edge, the center of the shadowless lamp holder is provided with a hole, and the supporting sleeve is arranged at the center of the hole of the shadowless lamp holder through the fixed skirt edge.

The utility model discloses for prior art gained beneficial effect lie in:

the utility model provides a novel shadowless lamp focusing stroke part, the structure is further simplified to supporting cover, spiral post and stroke cover, has not only carried out the optimal design with the structure of stroke part, makes whole volume reduce many, also pays attention to the detailed design of component more:

in order to keep the three large parts of the support sleeve, the spiral column and the stroke sleeve on the same axis, a positioning groove and a positioning bearing structure are designed, so that the stability of the support sleeve, the spiral column and the stroke sleeve during working is greatly improved;

the support sleeve, the spiral column and the stroke sleeve are connected together by only one stroke screw, so that the operation is simple and convenient, and the installation and the disassembly are also very convenient;

the skirt structure designed at the edge of the support sleeve also provides guarantee for the stability of the whole structure, the stroke sleeve can be long or short, the stroke sleeves with different lengths can be replaced at will to meet the focusing requirement, and the device can adapt to different focusing distances;

on the basis of ensuring the structural compactness, the integral component reduces the occupied space, ensures the effective travel distance, reasonably controls the size and is very convenient to detach and install. The problems of large occupied space, complex structure, poor stability and troublesome installation and maintenance are perfectly solved.

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 overall external view of a stroke part for focusing a shadowless lamp according to the embodiment 1;

FIG. 2 is a schematic structural view of a support sleeve;

FIG. 3 is a side schematic view of a support sleeve;

FIG. 4 is a cross-sectional view of the support sleeve;

FIG. 5 is a bottom view of the support sleeve;

FIG. 6 is a schematic structural view of a travel sleeve;

FIG. 7 is a schematic structural view of a screw column;

FIG. 8 is an exploded view of the one-piece stroke member along the central axis.

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

1. support cover, 11, stroke hole, 12, pivot through-hole, 13, constant head tank, 14, fixed shirt rim, 141, fixed orifices, 2, spiral post, 21, spiral section, 22, pivot section, 23, location bearing, 3, stroke cover, 31, mounting hole, 32, stroke screw.

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, fig. 1 is an overall appearance diagram of a stroke component for focusing a shadowless lamp in this embodiment 1, a component located at the outermost side is a support sleeve 1, a spiral column 2 and a stroke sleeve 3 are located inside the support sleeve 1, the support sleeve 1 is a hollow cylinder structure, the stroke sleeve 3 is sleeved on the spiral column 2, the spiral column 2 and the stroke sleeve 3 are integrally installed in an inner cavity of the support sleeve 1, axes of the three are overlapped, and the spiral column 2, the stroke sleeve 3 and the support sleeve 1 are respectively arranged from inside to outside; gaps are reserved between the spiral column 2 and the stroke sleeve 3, and between the stroke sleeve 3 and the support sleeve 1, so that the resistance to the expansion and contraction of the stroke sleeve 3 is reduced; the supporting sleeve 1 is arranged at the center of the shadowless lamp holder to play a supporting role.

Referring to fig. 2, 3 and 4, a stroke hole 11 is formed in a side wall of the support sleeve 1, the stroke hole 11 is formed along an axial direction of the support sleeve 1 and penetrates through one side wall of the support sleeve 1, a head of a stroke screw 32 is located in the stroke hole 11, the stroke hole 11 can counteract a radial force applied to the stroke screw 32, and the stroke screw 32 is limited to move only in the stroke hole 11 along the axial direction of the support sleeve 1.

Referring to fig. 5, the bottom surface of the support sleeve 1 is provided with the fixed skirt 14, the fixed skirt 14 is provided with three fixed holes 141, the distances between the adjacent fixed holes 141 are the same, the support sleeve 1 is placed in the central hole of the shadowless lamp holder, the fixed skirt 14 is just close to the shadowless lamp holder, the support sleeve 1 is directly installed in the central hole of the shadowless lamp holder through screws, the support sleeve 1 is prevented from shaking, and the stability of the support sleeve 1 is improved.

Referring to fig. 6, the side wall of the stroke sleeve 3 is provided with a mounting hole 31, as a preferred embodiment, a plurality of mounting holes 31 may be arranged in parallel, and when the stroke sleeve 3 and the screw column 2 are not matched, if the required telescopic size is not achieved, fine adjustment may be performed by switching the mounting hole 31, so as to achieve an optimal focusing effect.

The stroke screw 32 is fixedly installed on the installation hole 31, the stroke screw 32 penetrates through the inner wall of the stroke sleeve 3, and the tail part of the stroke screw 32 is exposed out of the inner wall of the stroke sleeve 3, so that the tail part of the stroke screw 32 is inserted into a thread gap of the screw column 2, and the outer diameter of the selected stroke screw 32 is smaller than the width of the thread gap of the screw column 2, so that the stroke screw can be always positioned in the thread gap;

when the screw column 2 rotates, the outer thread surface of the screw column 2 generates pressure on the stroke screw 32, the thread of the screw column 2 is obliquely arranged, namely the contact surface between the stroke screw 32 and the screw column 2 is oblique, the pressure can be regarded as a resultant force of a radial force and an axial force after orthogonal decomposition, and the radial force is offset due to the existence of the stroke hole 11 shown in fig. 2, so that the stroke screw 32 can only reciprocate in the stroke hole 11, and the conversion from the rotation of the screw column 2 to the linear displacement of the stroke screw 32 is realized.

Next, referring to fig. 4 and 5, a bottom surface is disposed at one end of the support sleeve 1 without the fixed skirt 14, a rotating shaft through hole 12 and a positioning groove 13 are disposed at the center of the bottom surface, the positioning groove 13 is disposed at the inner side of the rotating shaft through hole 12, the positioning groove 13 and the rotating shaft through hole 12 have the same axis, and by adopting the structure, the spiral column 2 does not shake on the support sleeve 1, so that the axes of the two coincide all the time.

In order to make the embodiment appear more clearly, the structure of the spiral column 2 will be described first, and then the connection relationship between the spiral column 2 and the through hole 12 and the positioning slot 13 of the rotating shaft in the upper section will be described.

Referring to fig. 7, the screw column 2 comprises a screw section 21 and a shaft section 22, the screw section 21 has thicker threads, and the space between the threads can accommodate the tail of the lower stroke screw 32, and the shaft section 22 passes through the shaft through hole 12 and out of the support sleeve 1. The rotating shaft section 22 is provided with a positioning bearing 23, the positioning bearing 23 is a universal bearing in the market, and an inner ring of the positioning bearing 23 is fixedly connected with the rotating shaft section 22.

Referring to fig. 4 and 7, the inner diameter of the positioning groove 13 is matched with the diameter of the outer ring of the positioning bearing 23, the depth of the positioning groove 13 is greater than or equal to 60% of the height of the positioning bearing 23, when the rotating shaft section 22 passes through the rotating shaft through hole 12, the positioning bearing 23 is just installed in the positioning groove 13, the close combination of the positioning bearing 23 and the positioning groove 13 ensures that the spiral column 2 and the supporting sleeve 1 have the same axis, namely, the spiral column 2 is ensured not to shake in the supporting sleeve 1, the diameter of the rotating shaft through hole 12 is greater than the outer diameter of the rotating shaft section 22, so that friction is avoided, and focusing resistance is reduced.

As a preferred embodiment, the top end of the rotating shaft section 22 is connected with a focusing handle, the focusing handle is a gear-driven focusing handle, the rotation process is finer, a gear is mounted at the top end of the rotating shaft section 22, the rotation of the focusing handle drives a gear set to rotate, and then the gear drives the rotating shaft section 22 to rotate, the gear set transmission is widely applied, the prior art is mature, and therefore the specific expansion is not needed; of course, other simple drive handles such as crank handles and the like may be used herein.

Referring to fig. 8, the axes of the support sleeve 1, the spiral column 2 and the stroke sleeve 3 are coincident, the spiral column 2 is rotated, the thread transmits power to the stroke screw 32, and the stroke screw 32 is mounted on the stroke sleeve 3, that is, the power is transmitted to the stroke sleeve 3, so that the stroke sleeve 3 extends out of or retracts into the support sleeve 1. When in use, lubricating oil can be added at the thread of the spiral column 2, so that the whole rotation process is smoother.

Preferably, the stroke hole 11 is processed into a long strip shape, the profile of two long ends of the stroke hole 11 is semicircular and is shaped like a track, the stroke hole can be processed by using an electric drill, the width of the stroke hole 11 is 1.2 times of the diameter of the head of the stroke screw 32, the radial movement of the stroke screw 32 can be avoided, the friction between the stroke screw 32 and the stroke hole 11 is reduced, and the resistance during reciprocating motion is further reduced.

According to the scheme of this embodiment, the utility model provides a novel shadowless lamp focusing stroke part has carried out optimal design with the structure of stroke part, and the structure is further simplified to support cover, spiral post and stroke cover, has guaranteed the compactedness of structure, when reducing occupation space, has guaranteed its effective stroke distance, the rational control its size, and the shirt rim structure that supports the cover edge also provides the guarantee for whole structure's firm, dismantles and installs only a stroke screw, and is very convenient. And optimized design is carried out at multiple places, so that the stability of the device is further improved, and the adaptability to different travel requirements is further improved.

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

1. A stroke component for focusing of a shadowless lamp comprises a support sleeve (1), a spiral column (2) and a stroke sleeve (3), wherein the support sleeve (1) is of a hollow cylinder structure, the stroke component is installed at the center of a shadowless lamp holder through the support sleeve (1), the stroke sleeve (3) is sleeved on the spiral column (2), the spiral column (2) can rotate in the stroke sleeve (3), the spiral column (2) and the stroke sleeve (3) are installed in an inner cavity of the support sleeve (1), axial reciprocating motion of the stroke sleeve (3) can be realized by rotating the spiral column (2), the stroke component is characterized in that a plurality of installation holes (31) are formed in the side wall of the stroke sleeve (3), stroke screws (32) are fixedly installed on the installation holes (31), and the outer diameter of each stroke screw (32) is smaller than or equal to the width of a thread gap of the spiral column (2), the stroke screw (32) is screwed on the inner wall of the stroke sleeve (3), the tail of the stroke screw (32) is inserted into a thread gap of the spiral column (2), the spiral column (2) can be pushed to move by rotating, a stroke hole (11) is formed in the side wall of the support sleeve (1), the head of the stroke screw (32) is located in the stroke hole (11), and the stroke screw (32) can drive the stroke sleeve (3) to reciprocate in the support sleeve (1) along the direction of the stroke hole (11).

2. The stroke component for the focusing of the shadowless lamp as claimed in claim 1, wherein one end of the support sleeve (1) is provided with a bottom surface, and the center of the bottom surface is provided with a rotating shaft through hole (12).

3. The stroke component for the focusing of the shadowless lamp as claimed in claim 2, wherein the spiral column (2) comprises a spiral section (21) and a rotating shaft section (22), the spiral section (21) is sleeved with the stroke sleeve (3), and the rotating shaft section (22) penetrates out of the support sleeve (1) through the rotating shaft through hole (12).

4. A stroke member for focus adjustment of shadowless lamps as claimed in claim 3 wherein the outer diameter of the spindle section (22) is less than or equal to the inner diameter of the spindle through hole (12).

5. The stroke component for shadowless lamp focusing of claim 3 wherein a focusing handle is attached to the top end of the pivot section (22), the focusing handle comprising a geared focusing handle.

6. A stroke component for focusing of a shadowless lamp as claimed in claim 3, wherein a positioning groove (13) is further arranged on the bottom surface of the support sleeve (1), the positioning groove (13) is arranged inside the rotating shaft through hole (12), the positioning groove (13) and the rotating shaft through hole (12) have the same axis, the rotating shaft section (22) is provided with a positioning bearing (23), and the positioning bearing (23) is matched with the positioning groove (13) in size.

7. A stroke member for focus adjustment of shadowless lamps as claimed in claim 6 wherein the depth of the positioning slot (13) is greater than or equal to 60% of the height of the positioning bearing (23).

8. The stroke component for shadowless lamp focusing of claim 1, wherein the stroke hole (11) is long, the width of the stroke hole (11) is between 1 and 2 times of the diameter of the head of the stroke screw (32).

9. A stroke part for shadowless lamp focusing according to claim 8, characterized in that the direction of the stroke hole (11) is arranged along the axial direction of the support sleeve (1).

10. The stroke part for focusing of a shadowless lamp as claimed in claim 1, wherein the support sleeve (1) is provided with a fixing skirt (14), the fixing skirt (14) is arranged at one end of the support sleeve (1) without the bottom surface, and the fixing skirt (14) is provided with a plurality of fixing holes (141).