WO2016065685A1

WO2016065685A1 - Led lamp focusing device and focusing method

Info

Publication number: WO2016065685A1
Application number: PCT/CN2014/092108
Authority: WO
Inventors: 陈志曼
Original assignee: 广州市雅江光电设备有限公司
Priority date: 2014-10-27
Filing date: 2014-11-25
Publication date: 2016-05-06
Also published as: CN104296090A

Abstract

A lamp focusing device and focusing method, the device comprising: a step/stepless switching and rotation mechanism. The step/stepless switching and rotation mechanism comprises: a lead screw (11), a bearing (12), a dial (16) and an adjusting knob (13) fixed on the bearing (12). A part on one end of the lead screw (11) extending into the adjusting knob (13) is provided with a first recess (113) and a second recess (114), and a first screw hole (131) is provided on a side of the adjusting knob (13), and a first glass bead screw (14) is disposed inside the first screw hole (131). Several circumferentially and uniformly distributed gear sockets (161) are disposed on the dial (16), and a second screw hole (132) is provided at the corresponding gear socket on the adjusting knob (13), and a second glass bead screw (15) is disposed inside the second screw hole (132). When the first glass bead screw (14) mates with the first recess (113), the second glass bead screw (15) presses against the gear socket (161), realizing a step focusing; when the first glass bead screw (14) mates with the second recess (114), the second glass bead screw (15) disengages the gear socket (161), realizing a stepless focusing. Also provided is a focusing method.

Description

LED lamp focusing device and focusing method

Technical field

The invention relates to the field of LED illumination, in particular to a focusing device and a focusing method capable of achieving stepless focusing and stepless focusing switching.

Background technique

According to the realization needs to adjust the lighting requirements, the existing LED lamps generally have a focusing function, and the focusing of the LED lamps is changed by the focusing device to realize the distance between the lens and the light source. The existing LED lamp focusing device is generally an electric stepless focusing, such as a Chinese patent, publication number 203273716, an LED lamp focusing device, including a lens group, an LED light board, a bearing guide rod, a limit plate, Lifting plate, focusing bracket, motor, motor bushing, the upper end of the bearing guide rod is fixedly connected with the lens group, and then passes through the LED light board, the limiting plate and the lifting plate in sequence, and the lower end is connected with the focusing bracket, and the lower end is connected with the focusing bracket. The focusing bracket, the lifting plate and the limiting plate are provided with a circular through hole at a central position, the motor is installed under the focusing bracket, and the rotating shaft on the motor sequentially passes through the focusing bracket, the motor bushing, The circular through hole of the lifting plate and the limiting plate; the above-mentioned focusing device rotates the motor to realize linear motion of the motor sleeve, thereby driving the lifting plate and the lens group to linearly move, and completing the electric stepless focusing. Although the focusing device can realize the focusing function of the lamp, it can only perform stepless focusing and has a single function; in the actual application of the LED lamp, in some occasions, it is possible to require the lamp to perform level focusing, and such a type of The electric stepless focusing device cannot meet the requirements.

Summary of the invention

One of the technical problems to be solved by the present invention is to provide an LED lamp focusing device capable of switching between step-wise focusing and stepless focusing.

The second technical problem to be solved by the present invention is to provide a focusing method of a focusing device for an LED lamp, which can realize switching between step-wise focusing and stepless focusing.

In order to solve one of the above technical problems, the technical solution of the present invention is: an LED lamp focusing device, comprising a focusing link, a focusing plate and a stepped/stepless switching rotating mechanism, the focusing link end is a lens plate of the LED lamp is connected, and the other end is connected to the focusing plate, and the stepped/stepless switching rotating mechanism acts on the focusing plate; the stepped/stepless switching rotating mechanism comprises a screw rod, a nut engaged with the screw rod and fixed on the focusing plate, a bearing seat, a bearing disposed in the bearing housing, a dial fixed on the bearing housing and an adjusting knob, the screw rod has a threaded end at one end, and another One end is a polished rod segment, and the threaded portion of the screw rod is matched with a nut. The polished rod portion of the screw rod passes through the bearing housing and cooperates with the adjusting knob. The portion of the polished rod portion that extends into the adjusting knob is provided with a first concave point and a second concave point. a first screw hole is disposed at a side of the adjusting knob corresponding to the first concave point and the second concave point, and a first bead screw is disposed in the first screw hole, and a head of the first bead screw The portion can be embedded with the first pit and the second pit; the dial is provided with a plurality of Slots, the cogging circumferentially evenly distributed, corresponding to the adjustment knob is provided with a second screw hole at the gullet, the second screw holes are equipped with a second bead.

The working principle of the invention: the stepwise focusing and the stepless focusing of the lens disk are realized by the stepped/stepless switching rotating mechanism:

Stepless focusing: screwing the first bead screw into the first screw hole, and inserting the head of the first bead screw into the first concave point, and the screw rod is connected with the knob through the first bead screw. The head of the second bead screw abuts against the tooth groove, rotates the adjustment knob, and each time the adjustment knob is rotated, the second bead screw travels the stroke of one of the slots, and the adjustment knob drives the screw to rotate, because the screw and the nut cooperate, The rotary motion of the screw shaft is converted into a linear motion of the nut on the screw rod. Since the nut is connected with the focusing plate, the nut drives the focusing plate and the linear movement of the lens disk to achieve stepwise focusing;

Stepless focusing: screw the first bead screw into the first screw hole, and insert the head of the first bead screw into the second concave point, and the lead screw is connected with the knob through the first bead screw. The second bead screw head leaves the dial and rotates the adjustment knob. Since the second bead screw is unobstructed, the adjustment knob rotates smoothly, and the adjustment knob drives the screw to rotate. Since the screw and the nut cooperate, the screw rotates. The movement is transformed into a linear motion of the nut on the screw. Since the nut is connected to the focusing plate, the nut drives the focusing plate and the linear movement of the lens disk to achieve stepless focusing.

As an improvement, an oil seal is arranged in the bearing seat, and a sealing surface cover for pressing the oil seal is disposed on one side of the bearing seat, and the sealing surface cover is fixedly connected with the bearing seat; the polished rod section of the screw rod sequentially passes through the Bearings, oil seals, sealing covers.

As an improvement, the end section of the polished rod section is non-circular, and the adjusting knob is provided with a hole groove similar to the cross-sectional shape of the polished rod section.

As an improvement, the side of the adjustment knob is provided with anti-slip stripes.

As an improvement, a support plate is disposed between the lens disk and the focusing plate, and the support plate is respectively connected to the focusing link. The support plate is used to reinforce the supporting force of each focusing link.

As an improvement, the focus connecting rod jacket has a focusing sleeve, and the function of the focusing sleeve is to make the focusing link move more stably and reduce the jitter.

In order to solve the above technical problem, the technical solution of the present invention is: a focusing method of a focusing device of an LED lamp, and the stepwise focusing and stepless focusing of the lens disk are realized by a stepped/stepless switching rotating mechanism:

Stepless focusing: screwing the first bead screw into the first screw hole, and inserting the head of the first bead screw into the first concave point, and the screw rod is connected with the knob through the first bead screw. The head of the second bead screw abuts against the tooth groove, rotates the adjustment knob, and each time the adjustment knob is rotated, the second bead screw travels the stroke of one of the slots, and the adjustment knob drives the screw to rotate, because the screw and the nut cooperate, The rotary motion of the screw is converted into a straight line of the nut on the screw Movement, because the nut is connected with the focusing plate, the nut drives the focusing plate and the linear movement of the lens disk to achieve step-wise focusing;

As an improvement, a support plate is disposed between the lens disk and the focusing plate, and the support plate is respectively connected to the focusing link.

As an improvement, the focus link housing has a focus sleeve.

The beneficial effects of the present invention compared to the prior art are:

When the first bead screw is matched with the first concave point, the second bead screw is pressed against the tooth groove to realize stepwise focusing; when the first bead screw is matched with the second concave point, the second is made The bead screw leaves the gullet for stepless focusing.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention.

Figure 2 is an exploded view of the stepped/stepless switching rotary mechanism.

detailed description

The invention will now be further described with reference to the drawings of the specification.

As shown in FIG. 1 , an LED lamp focusing device comprises a focusing connecting rod 4 , a focusing plate and a stepped/stepless switching rotating mechanism 1 , and one end of the focusing connecting rod 4 and the lens plate 7 of the LED lamp The other end is connected to the focusing plate 3, and the focusing plate 3 is connected to the lens disk 7 through the focusing link 4 to be integrated. A support plate 5 is disposed between the lens plate 7 and the focusing plate 3, and the support plate 5 is respectively connected to the focusing link 4, and the supporting plate 5 is used for reinforcing the focusing link 4 to enable it to be more Reliable support for the lens disk 7. The focusing link 4 is jacketed with a focusing sleeve 6. The function of the focusing sleeve 6 is to make the focusing link 4 more stable and reduce jitter. The stepped/stepless switching rotary mechanism 1 acts on the focusing plate 3, and the stepwise or stepless adjustment of the lens is achieved by performing stepwise or stepless adjustment of the focusing plate 3.

As shown in FIG. 1 and 2, the stepped/stepless switching rotating mechanism 1 includes a screw rod 11, a nut 8 matched with the screw rod 11 and fixed on the focusing plate 3, a bearing housing 12, and a bearing. The bearing 19 in the seat 12, the oil seal 18 provided in the bearing housing 12, the sealing face cover 17 for sealing the oil seal 18, the dial 16 fixed to the bearing housing 12, and the adjustment knob 13. The bearing housing 12 is mounted on the fixed plate 2 as a support for the entire rotating mechanism. One end of the screw rod 11 is a threaded section 111, and the other end is a polished rod section 112. The threaded section 111 of the screw rod 11 cooperates with the nut 8 to be converted into a linear motion of the nut 8 by the rotation of the screw rod 11; The light rod segment 112 passes through the bearing 19, the oil seal 18, and the sealing surface cover 17 in turn, and cooperates with the adjusting knob 13 to rotate the screw rod 11 by rotating the adjusting knob 13; in order to prevent slippage between the screw rod 11 and the adjusting knob 13, The end portion of the polished rod segment 112 of the screw rod 11 is non-circular. In addition, the adjusting knob 13 is provided with a hole groove similar to the cross-sectional shape of the polished rod portion 112; the side of the adjusting knob 13 is provided with anti-slip stripes, which is convenient Turn the adjustment knob 13 manually. The portion of the polished rod section 112 that extends into the adjustment knob 13 is provided with a first concave point 113 and a second concave point 114, and the first concave point 113 is closer to the threaded section 111; the side of the adjustment knob 13 corresponds to the first concave surface Point 113 and second pit 114 are provided a first screw hole 131, a first bead screw 14 is disposed in the first screw hole 131, and a head of the first bead screw 14 can be embedded in the first concave point 113 and the second concave point 114. A bead screw 14 adjusts the distance between the adjustment knob 13 and the threaded section 111. When the first bead screw 14 is embedded in the first recess 113, the adjustment knob 13 approaches the threaded section 111 when the first bead screw 14 When the second recess 114 is embedded, the knob 13 is adjusted to the threaded section 111. The dial 16 is provided with a plurality of slots 161. The slots 161 are evenly distributed around the circumference. A second screw hole 132 is defined in the corresponding slot 161 on the end surface of the adjusting knob 13, and the second screw hole 132 is disposed. A second bead screw 15 is provided. In order to facilitate the adjustment of the bead screw, the end of the first bead screw 14 and the second bead screw 15 are provided with a hexagonal groove; the first bead screw 14 and the second bead screw 15 are both through holes. Adjust the depth of its entry into the through hole by rotating the bead screw.

The working principle of the invention: the stepwise focusing and the stepless focusing of the lens disc 7 are realized by the stepped/stepless switching rotating mechanism 1:

Staged focusing: screwing the first bead screw 14 into the first screw hole 131, and inserting the head of the first bead screw 14 into the first concave point 113, the screw 11 passing the first bead screw 14 and the knob Connected together, at this time, the head of the second bead screw 15 abuts against the tooth groove 161, rotates the adjustment knob 13, and each time the adjustment knob 13 is rotated, the second bead screw 15 travels the stroke of one of the slots 161, and the adjustment knob 13 drives the screw 11 to rotate. Since the screw rod 11 cooperates with the nut 8, the rotary motion of the screw rod 11 is converted into a linear motion of the nut 8 on the screw rod 11. Since the nut 8 is connected with the focusing plate 3, the nut 8 drives the focusing. The linear movement of the plate 3 and the lens disk 7 realizes stepwise focusing;

Stepless focusing: screwing the first bead screw 14 into the first screw hole 131, and inserting the head of the first bead screw 14 into the second concave point 114, the screw 11 passing the first bead screw 14 and the knob Connected together, at this time, the head of the second bead screw 15 leaves the dial 16, rotating Adjusting the knob 13, since the second bead screw 15 is unobstructed, the adjusting knob 13 rotates smoothly, and the adjusting knob 13 drives the screw 11 to rotate. Since the screw 11 and the nut 8 cooperate, the rotational motion of the screw 11 is converted into the nut 8 In the linear motion on the lead screw 11, since the nut 8 is connected to the focusing plate 3, the nut 8 drives the focusing plate 3 and the lens disk 7 to linearly move to achieve stepless focusing.

Claims

An LED lamp focusing device, comprising: a focusing connecting rod, a focusing plate and a stepped/stepless switching rotating mechanism, wherein one end of the focusing link is connected with the lens plate of the LED lamp, and the other end is a focusing plate connection, the stepped/stepless switching rotating mechanism acts on the focusing plate; the stepped/stepless switching rotating mechanism comprises a screw rod, cooperates with the screw rod and is fixed in focusing a nut on the plate, a bearing seat, a bearing disposed in the bearing housing, a dial fixed on the bearing housing and an adjustment knob, the screw rod has a threaded end at one end and a polished rod portion at the other end, and the threaded portion of the screw rod and The nut is matched, and the polished rod segment of the screw rod passes through the bearing housing and cooperates with the adjusting knob. The portion of the polished rod portion that extends into the adjusting knob is provided with a first concave point and a second concave point, and the adjusting knob side corresponds to the first portion a first screw hole is disposed at the concave point and the second concave point, and a first bead screw is disposed in the first screw hole, and a head of the first bead screw can be embedded in the first concave point and the second concave surface Point; the dial is provided with a plurality of slots, the slots are evenly distributed, Is provided at the second screw hole corresponding to the cogging knob section, the second screw holes are equipped with a second bead.
The LED lamp focusing device according to claim 1, wherein the bearing housing is provided with an oil seal, and one side of the bearing seat is provided with a sealing surface cover for pressing the oil seal, the sealing surface cover and the bearing The seat is fixedly connected; the polished rod section of the screw rod passes through the bearing, the oil seal and the sealing face cover in sequence.
The LED lamp focusing device of claim 1 is characterized in that the end section of the polished rod section is non-circular, and the adjusting knob is provided with a hole groove similar to the cross-sectional shape of the polished rod section.
The LED lamp focusing device according to claim 1, wherein the side surface of the adjusting knob is provided with anti-slip stripes.
The LED lamp focusing device according to claim 1, wherein a support plate is disposed between the lens plate and the focusing plate, and the supporting plate is respectively connected to the focusing link.
The LED lamp focusing device according to claim 1, wherein the focusing link casing has a focusing sleeve.
A focusing method for a focusing device of an LED lamp according to claim 1, characterized in that the stepwise focusing and the stepless focusing of the lens disk are realized by a stepless/stepless switching rotating mechanism:

Stepless focusing: screwing the first bead screw into the first screw hole, and inserting the head of the first bead screw into the first concave point, and the screw rod is connected with the knob through the first bead screw. The head of the second bead screw abuts against the tooth groove, rotates the adjustment knob, and each time the adjustment knob is rotated, the second bead screw travels the stroke of one of the slots, and the adjustment knob drives the screw to rotate, because the screw and the nut cooperate, The rotary motion of the screw shaft is converted into a linear motion of the nut on the screw rod. Since the nut is connected with the focusing plate, the nut drives the focusing plate and the linear movement of the lens disk to achieve stepwise focusing;

Stepless focusing: screw the first bead screw into the first screw hole, and insert the head of the first bead screw into the second concave point, and the lead screw is connected with the knob through the first bead screw. The second bead screw head leaves the dial and rotates the adjustment knob. Since the second bead screw is unobstructed, the adjustment knob rotates smoothly, and the adjustment knob drives the screw to rotate. Since the screw and the nut cooperate, the screw rotates. Movement into a straight nut on the screw The line movement, because the nut is connected with the focusing plate, the nut drives the focusing plate and the linear movement of the lens disk to achieve stepless focusing.
The focusing method of a focusing device for an LED lamp according to claim 1, wherein the bearing housing is provided with an oil seal, and one side of the bearing seat is provided with a sealing surface cover for pressing the oil seal, the sealing The cover is fixedly connected with the bearing seat; the polished rod section of the screw rod passes through the bearing, the oil seal and the sealing surface cover in sequence.
The focusing method of a focusing device for an LED lamp according to claim 1, wherein a support plate is disposed between the lens plate and the focusing plate, and the supporting plate and the focusing link are respectively connection.
The focusing method of a focusing device for an LED lamp according to claim 1, wherein the focusing link casing has a focusing sleeve.