WO2016061868A1

WO2016061868A1 - Stepped and stepless switching rotation mechanism

Info

Publication number: WO2016061868A1
Application number: PCT/CN2014/092177
Authority: WO
Inventors: 陈志曼
Original assignee: 广州市雅江光电设备有限公司
Priority date: 2014-10-21
Filing date: 2014-11-25
Publication date: 2016-04-28
Also published as: CN204164949U

Abstract

A stepped and stepless switching rotation mechanism (1), comprising a screw rod (11), a bearing base (12), and a dial (16) and an adjustment knob (13) fixed on the bearing base (12); 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 a nut (8); the polished rod section (112) of the screw rod (11) passes through the bearing base (12) to cooperate with the adjustment knob (13); a portion of the polished rod section (112) extending into the adjustment knob (13) is provided with a first recessed spot (113) and a second recessed spot (114); a side face of the adjustment knob (13) corresponding to the first recessed spot (113) and the second recessed spot (114) is provided with a first screw hole (131); a first bead bolt (14) is provided in the first screw hole (131); a head portion of the first bead bolt (14) can be embedded in the first recessed spot (113) and the second recessed spot (114); the dial (16) is provided with a plurality of cogs (161) thereon uniformly distributed at a periphery; a position of the adjustment knob (13) corresponding to the cogs (161) is provided with a second screw hole (132); the second screw hole (132) is provided with a second bead bolt (15) therein; when the first bead bolt (14) cooperates with the first recessed spot (113), the second bead bolt (15) tightly presses the cogs (161) to realize a stepped rotation, and when the first bead bolt (14) cooperates with the second recessed spot (114), the second bead bolt (15) leaves the cogs (161) to realize a stepless rotation.

Description

Stepped and stepless switching rotating mechanism

Technical field

The utility model relates to a rotating mechanism, in particular to an LED lamp, which realizes a rotating mechanism of a lamp with step 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

The technical problem to be solved by the utility model is to provide a stepped and stepless switching rotating mechanism, which can realize switching between stepped rotation and stepless rotation.

In order to solve one of the above technical problems, the technical solution of the present invention is: a class And a stepless switching rotating mechanism, comprising: a screw rod, a bearing seat, a bearing disposed in the bearing housing, a dial fixed on the bearing housing and an adjusting knob, wherein one end of the screw rod is a thread segment, and the other end For the polished rod segment, the threaded portion of the screw rod is matched with the nut, and the polished rod portion of the screw rod passes through the bearing seat and cooperates with the adjusting knob, and 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 on a side of the adjusting knob corresponding to the first recess and the second recess, and a first bead screw is disposed in the first screw hole, and a head of the first bead screw The first concave point and the second concave point can be embedded; the dial is provided with a plurality of tooth grooves, the tooth groove circumference is evenly distributed, and the adjusting screw has a second screw hole at the corresponding tooth groove, the first A second bead screw is arranged in the two screw holes.

Stepped rotation: 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 is connected to the knob through the first bead screw, at this time, The head of the second bead screw abuts against the tooth groove, rotates the adjustment knob, and each time the adjustment knob is turned, the second bead screw travels a tooth groove, and the adjustment knob drives the screw to rotate, because the screw and the nut cooperate, the wire The rotary motion of the rod is converted into a linear motion of the nut on the screw to achieve stepwise rotation; stepless rotation: screwing the first bead screw into the first screw hole and embedding the head of the first bead screw into the second The pit is connected to the screw by the first bead screw. At this time, the second bead screw head leaves the dial and rotates the adjustment knob. Since the second bead screw is not obstructed, the adjustment knob rotates smoothly. The adjusting knob drives the screw to rotate. Since the screw and the nut cooperate, the rotary motion of the screw is converted into a linear motion of the nut on the screw to realize stepless rotation.

As an improvement, the bearing seat 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, and the sealing surface cover is fixedly connected with the bearing seat; the polished rod section of the screw rod is Pass through the bearing, oil seal, and sealing face cover.

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.

The beneficial effects of the utility model compared with the prior art are:

When the first bead screw is engaged with the first concave point, the second bead screw is pressed against the tooth groove to realize stepwise rotation; when the first bead screw is engaged with the second concave point, the second bead screw is made Leaving the slot to achieve stepless rotation.

DRAWINGS

Figure 1 is a schematic view of the utility model applied to an LED lamp.

Figure 2 is an exploded view of the present invention.

detailed description

The present invention will be further described below in conjunction with the drawings.

As shown in FIG. 1 , an LED lamp focusing device comprises a focusing connecting rod 4 , a focusing plate and a stepped and 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 and stepless switching rotating mechanism 1 acts on the focusing plate 3, and the stepwise or stepless focusing 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 and 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 shaft. A bearing 19 in the socket 12, an oil seal 18 provided in the bearing housing 12, a sealing face cover 17 for sealing the oil seal 18, a dial 16 fixed to the bearing housing 12, and an 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 A first screw hole 131 is disposed at the point 113 and the second recess 114. The first screw hole 131 is provided with a first bead screw 14 , and the head of the first bead screw 14 can be embedded in the first concave Point 113 and second pit 114, the distance between the adjustment knob 13 and the thread segment 111 is adjusted by the first bead screw 14, and when the first bead screw 14 is embedded in the first pit 113, the adjustment knob 13 is threaded The segment 111 is close, and when the first bead screw 14 is inserted into the second pit 114, the knob 13 is adjusted to the thread segment 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 utility model: the stepwise focusing and the stepless focusing of the lens disk 7 are realized by the stepped and stepless switching rotating mechanism 1:

Staged focusing: screwing the first bead screw 14 into the first screw hole 131 and making the first bead screw The head of the 14 is embedded in the first recess 113, and the screw 11 is coupled to the knob by the first bead screw 14. At this time, the head of the second bead screw 15 abuts the slot 161, and the adjustment knob 13 is rotated. 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 11 and the nut 8 cooperate, the rotary motion of the screw 11 is converted into the nut 8 The linear motion on the screw rod 11, because the nut 8 is connected with the focusing plate 3, the nut 8 drives the focusing plate 3 and the lens plate 7 to linearly move to achieve 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, and the adjustment knob 13 is rotated. Since the second bead screw 15 is unobstructed, the adjustment knob 13 rotates smoothly, and the adjustment knob 13 drives the screw 11 Rotating, since the screw rod 11 is engaged 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 plate 3 and the lens plate. 7 linear motion for stepless focusing.

Claims

A stepped and stepless switching rotating mechanism, comprising: a screw rod, a bearing seat, a bearing disposed in the bearing housing, a dial fixed on the bearing housing and an adjusting knob, wherein one end of the screw is threaded The other end is a polished rod segment, the threaded portion of the screw rod is matched with the nut, and the polished rod portion of the screw rod passes through the bearing seat and cooperates with the adjusting knob, and the portion of the polished rod portion that extends into the adjusting knob is provided with a first concave point and a a second concave hole, a side of the adjusting knob corresponding to the first concave point and the second concave point is provided with a first screw hole, wherein the first screw hole is provided with a first bead screw, the first glass bead The head of the screw can be embedded in the first concave point and the second concave point; the dial is provided with a plurality of slots, the circumference of the tooth groove is evenly distributed, and the second screw hole is arranged on the corresponding tooth groove of the adjusting knob a second bead screw is disposed in the second screw hole.
The stepwise and stepless switching rotation mechanism 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 The cover is fixedly connected to 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 stepwise and stepless switching rotation mechanism according to claim 1, wherein the end section of the polished rod section is non-circular, and the adjusting knob is provided with a hole similar in cross-sectional shape to the polished rod section. groove.
A stepwise and stepless switching rotation mechanism according to claim 1, wherein the side surface of the adjustment knob is provided with anti-slip stripes.