CN112228846A - Lamp rotation mechanism and lamp - Google Patents

Abstract

The invention discloses a lamp rotating mechanism and a lamp, wherein the lamp rotating mechanism comprises a base module, a rotating arm module and a zero position detection module, the base module comprises a base and a rotating part arranged on the base, the rotating arm module comprises a rotating arm, a main shaft and a driving mechanism, one end of the main shaft is connected with the rotating arm, the other end of the main shaft is rotatably connected with the rotating part, the driving mechanism drives the rotating arm to rotate, the driving mechanism is connected with the base through a transmission structure, the zero position detection module comprises a first zero position detection mechanism and a second zero position detection mechanism, when the first zero position detection mechanism and the second zero position detection mechanism are both triggered, the lamp rotating mechanism is in a zero position point, and the first zero position detection mechanism and the second zero position detection mechanism are arranged to lock zero position detection.

Description

Lamp rotation mechanism and lamp

Technical Field

The invention relates to the technical field of lamps, in particular to a lamp rotating mechanism and a lamp.

Background

At present, the rotation of the X axis of a computer shaking head lamp belongs to a swing mechanism, and a preset zero position of the lamp, namely a defined starting position of the X axis rotation motion of the lamp, needs to be found every time the lamp is reset. Generally, when the motion mechanism determines the "zero" position, a group of sensors are arranged on a part which is kept relatively static in the motion mechanism, namely the part which is kept moving, and the "zero" position is determined through sensor signals caused by the change of the relative positions of the two parts.

The X-axis stroke of a general computer shaking head lamp is larger than 540 degrees but smaller than 630 degrees, and actually, the use requirement can be met when the general effective working stroke is 540 degrees. Taking a 540-degree stroke as an example, in the whole unidirectional movement of the X-axis of the lamp, the formation of more than 180-degree traces can be overlapped, if only one group of sensors is arranged, in the same unidirectional rotation period, the position of the group of sensors is overlapped for two times, namely, two times of signal changes with the same characteristics can occur, and thus, the zero position cannot be determined by one group of sensors alone.

The existing computer moving head lamp is generally arranged at a zero position, a group of sensors are arranged for detection, limit structures are designed at the zero position and a terminal position, when the computer moving head lamp is reset, an X shaft reversely rotates to the zero position, the X shaft cannot move forwards continuously due to the blocking of the limit structures, continuous mechanical impact is generated, a control system detects signals of the sensors at the position, a motor stalling signal is added to determine the zero point, the same sensor signal is also generated at a 360-degree stroke position, but the motor stalling signal is not blocked by the limit structures at the position, and the control system cannot judge the motor stalling point as the zero point.

Currently, the disadvantages of this solution are as follows: 1. each time the lamp is reset, a noise of colliding with the limiting column is emitted, and after the lamp is used for a long period of time, the limiting column at the starting point is damaged by collision or deformed by collision, so that zero displacement is caused; 2. if the slewing mechanism happens to generate locked rotor at the position of 360 degrees due to other reasons, the system can generate misjudgment; 3. in order to avoid the second low-probability event, some lamps are usually reset in the reverse direction, the zero position is preliminarily determined through a sensor and a motor stalling signal, then the motor is controlled to rotate forwards for more than 540 degrees, the motor touches a limiting mechanism at the end point to receive the stalling signal, the motor rotates backwards again to return to the zero position, the zero position is judged to be effective, and if the motor stroke does not reach 540 degrees during the forward rotation, the slewing mechanism is judged to be in fault. Such a one-time reset time is long.

Disclosure of Invention

The present invention is directed to at least one of the technical problems of the prior art, and provides a lamp rotation mechanism.

According to the embodiment of the first aspect of the invention, a lamp rotation mechanism is provided, which includes a base module, a rotating arm module and a zero position detection module, wherein the base module includes a base and a rotating member disposed on the base, the rotating arm module includes a rotating arm, a main shaft and a driving mechanism, one end of the main shaft is connected to the rotating arm, the other end of the main shaft is connected to the rotating member, the driving mechanism drives the rotating arm to rotate, the driving mechanism is connected to the base through a transmission structure, the zero position detection module includes a first zero position detection mechanism and a second zero position detection mechanism, and when both the first zero position detection mechanism and the second zero position detection mechanism are triggered, the lamp rotation mechanism is at a zero position point.

Has the advantages that: this lamps and lanterns rotation mechanism, including the base module, rocking arm module and zero-position detection module, the base module includes base and the rotation piece of setting on the base, the rocking arm module includes the rocking arm, main shaft and actuating mechanism, main shaft one end is connected with the rocking arm, the main shaft other end rotates with the rotation piece and is connected, actuating mechanism drive rocking arm rotates, and actuating mechanism passes through transmission structure with the base and is connected, zero-position detection module includes first zero-position detection mechanism and second zero-position detection mechanism, when first zero-position detection mechanism and second zero-position detection mechanism all triggered, lamps and lanterns rotation mechanism is in the zero point, set up first zero-position detection mechanism and second zero-position detection mechanism, with this zero-position detection of locking.

According to the lamp rotating mechanism in the embodiment of the first aspect of the present invention, the lamp rotating mechanism further includes a limiting module, the limiting module includes a positioning block, a first limiting column and a second limiting column, the first limiting column is disposed on the transmission structure, the second limiting column is disposed on the bottom surface of the rotating arm, the positioning block is sleeved on the main shaft, and the positioning block, the first limiting column and the second limiting column limit the starting point and the ending point of the rotating arm.

According to the lamp slewing mechanism provided by the embodiment of the first aspect of the invention, the positioning block comprises a positioning disc, a first limiting block and a second limiting block, the first limiting block is arranged on the outer ring side of the positioning disc, and the second limiting block is arranged on the outer ring side of the first limiting block.

According to the lamp slewing mechanism provided by the embodiment of the first aspect of the invention, the arc length of the first limiting block is greater than that of the second limiting block, inner limiting flanges are formed on two sides of the first limiting block, and outer limiting flanges are formed on two sides of the second limiting block.

According to the lamp slewing mechanism provided by the embodiment of the first aspect of the invention, the transmission structure is a synchronous pulley, the transmission structure comprises a driving wheel, a driven wheel and a synchronous belt connecting the driving wheel and the driven wheel, and the driven wheel is arranged on the base.

According to the lamp slewing mechanism provided by the embodiment of the first aspect of the present invention, the first zero position detection mechanism includes a first sensing member and a first sensor assembly, the first sensing member is disposed on the periphery of the base, the first sensor assembly includes a first mounting plate and a first sensor, the first sensor is fixed on the bottom surface of the rotating arm through the first mounting plate, and when the first sensing member interferes with the first sensor, the first sensor triggers an on-signal state.

According to the lamp slewing mechanism in the embodiment of the first aspect of the present invention, the second zero position detection mechanism includes a second sensing element and a second sensor assembly, the second sensing element is disposed on the positioning block, the second sensor assembly includes a second mounting plate and a second sensor, the second sensor is fixed on the bottom surface of the rotating arm through the second mounting plate, and when the second sensing element interferes with the second sensor, the second sensor triggers an on-signal state.

According to the lamp revolving mechanism in the embodiment of the first aspect of the present invention, the first induction member and the second induction member are magnets.

According to the lamp slewing mechanism in the embodiment of the first aspect of the invention, the rotating member is a bearing.

According to a second aspect of the present invention, there is provided a luminaire comprising: the lamp rotating mechanism comprises a lamp arm and the lamp rotating mechanism in the embodiment of the first aspect, wherein the lamp arm is fixedly connected with the lamp rotating mechanism.

Drawings

The invention is further described below with reference to the accompanying drawings and examples;

FIG. 1 is a schematic view of a revolving mechanism of a lamp according to an embodiment of the present invention;

FIG. 2 is a schematic view of a base module according to an embodiment of the present invention;

FIG. 3 is a schematic view of a boom module according to an embodiment of the present invention;

FIG. 4 is a schematic view of a positioning block according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a position of a rotating mechanism of a lamp before resetting according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a zero position of the swing mechanism of the lamp according to the embodiment of the present invention after being reset;

FIG. 7 is a schematic view illustrating a rotation mechanism of a lamp rotating to 0 ° according to an embodiment of the present invention;

FIG. 8 is a schematic view illustrating a rotation mechanism of a lamp rotating to 319 degrees according to an embodiment of the present invention;

FIG. 9 is a schematic view illustrating the rotation mechanism of the lamp rotating to 358 ° according to the embodiment of the present invention;

FIG. 10 is a schematic view of the end point of the lamp rotating mechanism rotating to 540 degrees

Fig. 11 is a schematic view of a physical limit end point when the rotating mechanism of the lamp rotates to 542 degrees in the forward direction according to the embodiment of the invention;

FIG. 12 is a schematic view illustrating the rotation mechanism of the lamp rotating to rotate at 358 ° in accordance with the present invention;

FIG. 13 is a schematic view illustrating a rotation mechanism of a lamp rotating to 219 deg. in accordance with an embodiment of the present invention;

FIG. 14 is a schematic view illustrating the rotation mechanism of the lamp rotating back to 0 degree

FIG. 15 is a schematic diagram illustrating a free movement range of a positioning block when the lamp rotating mechanism is at the 358 ° position according to the embodiment of the present invention;

FIG. 16 is a schematic diagram of a starting point of a physical limit of a revolving mechanism of a lamp according to an embodiment of the present invention;

FIG. 17 is a schematic diagram of a terminal point of a physical limit of a revolving mechanism of a lamp according to an embodiment of the present invention;

FIG. 18 is a schematic view of a lamp according to an embodiment of the invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 4, a lamp rotation mechanism includes a base module 100, a rotating arm module 200 and a zero position detection module, wherein the base module 100 includes a base 110 and a rotating member 120 disposed on the base 110, the rotating member 120 is a bearing, and a main shaft 220 is inserted into the bearing and fixed at a lower end by a round nut. The rotating arm module 200 includes a rotating arm 210, a main shaft 220 and a driving mechanism 230, one end of the main shaft 220 is connected with the rotating arm 210, the other end of the main shaft 220 is rotatably connected with a bearing, the driving mechanism 230 drives the rotating arm 210 to rotate, the driving mechanism 230 is connected with the base 110 through a transmission structure, the transmission structure is a synchronous pulley, the transmission structure includes a driving wheel, a driven wheel 510 and a synchronous belt 520 connecting the driving wheel and the driven wheel 510, the driven wheel 510 is arranged on the base 110, and the driving mechanism 230 and the driven wheel 510 are connected by a transmission belt. In operation, the base module 100 is stationary, and when the driving mechanism 230 is controlled to rotate clockwise and counterclockwise, the rotating arm 210 is driven by the driving belt to rotate clockwise (counterclockwise) and counterclockwise (clockwise) around the base module 100. The zero position detection module comprises a first zero position detection mechanism and a second zero position detection mechanism, and when the first zero position detection mechanism and the second zero position detection mechanism are both triggered, the lamp rotation mechanism is located at a zero point, so that zero position detection is locked.

Referring to fig. 1 and 4, the lamp rotation mechanism further includes a limiting module, the limiting module includes a positioning block 410, a first limiting column 420 and a second limiting column 430, the first limiting column 420 is disposed on the transmission structure, the second limiting column 430 is disposed on the bottom surface of the rotating arm 210, the positioning block 410 is sleeved on the main shaft 220, and the positioning block 410, the first limiting column 420 and the second limiting column 430 limit the starting point and the ending point of the rotating arm 210. The positioning block 410 includes a positioning disc 411, a first limiting block 412 and a second limiting block 413, the first limiting block 412 is disposed on an outer ring side of the positioning disc 411, and the second limiting block 413 is disposed on an outer ring side of the first limiting block 412. The arc length of the first limiting block 412 is greater than the arc length of the second limiting block 413, inner limiting flanges are formed on two sides of the first limiting block 412, and outer limiting flanges are formed on two sides of the second limiting block 413. When the first stopper 420 pushes the outer stopper rib of the second stopper 413, the positioning block 410 rotates together with the rotating arm 210.

Referring to FIG. 1, the first zero detection mechanism includes a first sensing member 310 and a first sensor assembly 320. The first sensing member 310 is a magnet. The first sensing member 310 is disposed on the periphery of the base 110, and the first sensor assembly 320 includes a first mounting plate and a first sensor, the first sensor is fixed on the bottom surface of the rotating arm 210 via the first mounting plate, and the first sensor is a hall sensor. When the Hall sensor is close to the corresponding geomagnetic iron, the triggered signal of the Hall sensor is on, and the signal when the magnet is far away from the Hall sensor is off.

The second zero detection mechanism includes a second sensing member 330 and a second sensor assembly 340. The second sensing member 330 is a magnet. The second sensing member 330 is disposed on the positioning block 410, and the second sensor assembly 340 includes a second mounting plate and a second sensor, and the second sensor is fixed to the bottom surface of the rotating arm 210 through the second mounting plate. The second sensor is a hall sensor. When the second sensing member 330 interferes with the second sensor, the second sensor triggers an on signal state.

The lamp rotation mechanism is additionally provided with two zero position sensor detection points in a common lamp positioning structure, and optimizes sensor layout and detection logic so as to lock zero position detection. The limiting modules at the starting point and the ending point are changed into motion insurance structures from the function aspect.

The positioning detection is performed by the combination of the hall sensor and the magnet at the maximum rotation stroke 544 deg. Referring to fig. 5, when the system controls the driving mechanism 230 to rotate counterclockwise, the rotating arm 210 is driven to rotate reversely around the base module 100, the second positioning pin 430 contacts the first outer positioning stop on the positioning block 410, and pushes the positioning block 410 to rotate along with the rotating arm 210. At this time, the second sensor is close to the second sensing member 330 and kept in position, the second sensor is triggered to turn on and keeps this state, and when the inner limit rib second on the positioning block 410 touches the first limit post 420, the first sensor is also triggered to turn on as it enters the close-distance magnetic field of the first sensing member 310, as shown in fig. 6, at this time, the second sensor and the first sensor are both in the on state and are determined as the zero point by the system. At this time, the rotating arm 210 is also restricted by the physical structure formed by the positioning block 410, the first limit post 420 and the second limit post 430, and cannot rotate clockwise.

In order to ensure the consistency of the whole batch of products, the zero position is only the reset original point, and the actual working stroke generally intercepts one section of the zero position and the physical limit end point. In one embodiment, the maximum lamp travel is 544 °, the null is set to-2 °, and the physical endpoint is 542 °, so that even if the entire travel is 544 ° ± 2 ° due to error, the null of each lamp can be adjusted by the control system to ensure a known travel of 0 ° -540 °.

From the zero position, counterclockwise rotation (forward rotation), as shown in fig. 7, the system controls the driving mechanism 230 to rotate clockwise, so as to drive the rotating arm 210 to rotate forward around the base module 100, the second limiting column 430 will be separated from the positioning block 410, the first sensor and the second sensor are separated from the close-distance magnetic fields of the first sensing element 310 and the second sensing element 330, respectively, the signal states of the first sensor and the second sensor are all turned off, and the system reports the signal states to the system and keeps the off state.

As the rotating arm 210 rotates to 319 ° continuously, the second position-limiting pillar 430 will touch the second outer position-limiting rib on the positioning block 410, and push the positioning block 410 to rotate along with the rotating arm 210, as shown in fig. 8 and 9, until the rotating arm rotates to about 358 ° position, the first sensor enters the short-distance magnetic field of the first sensing member 310, the signal of the first sensor changes from off to on, and when the rotating arm continues to rotate forward, the signal of the first sensor keeps off because the first sensor is far away from the first sensing member 310.

As shown in fig. 10 and 11, as the rotating arm 210 continues to rotate to the 542 ° position, when the outer limit rib on the positioning block 410 contacts the first limit post 420 on the base module 100, the rotating arm 210 is also limited by the physical structure formed by the positioning block 410, the first limit post 420 and the second limit post 430, and cannot continue to rotate counterclockwise.

As in fig. 12, clockwise rotation (reversal) from the 542 ° position: the control system controls the driving mechanism 230 to rotate counterclockwise, drives the rotating arm 210 to rotate reversely around the base module 100, the second position-limiting post 430 will disengage from the positioning block 410 until the position is rotated to about 358 °, the first sensor enters the close-range magnetic field of the first sensing member 310, the signal thereof is changed from off to on, the reverse rotation is continued, the first sensor disengages from the first sensing member 310, and the signal thereof remains off again.

As the rotating arm 210 continues to rotate back to the 219 ° position, the second position-limiting pillar 430 hits the first outer position-limiting rib of the positioning block 410, and pushes the positioning block 410 to rotate along with the rotating arm 210, as shown in fig. 13. At this point, the second sensor enters the close proximity field of the second sensing member 330 to maintain this position, triggering an on signal and maintaining that state.

As shown in fig. 14, until the rotating arm 210 continues to rotate to the zero position, the first sensor enters the close magnetic field of the first sensing member 310, and is also triggered to turn on, and the rotating arm 210 is also restricted by physical structure and cannot keep rotating clockwise.

The positioning block 410 is freely sleeved on the main shaft 220, and during the above movement, when the second position-limiting column 430 is disengaged from the positioning block 410, the positioning block 410 may also rotate synchronously or rotate with the rotating arm 210 with a delay under the influence of friction force and the like. It can be seen from the above that except for the null position, the first sensor will re-enter the near magnetic field of the first inductive element 310 only at the 358 ° position, thereby turning to an on signal. Referring to fig. 15, in the 358 ° position, when the first sensor is in the on state, the second sensor does not enter the close-range magnetic field of the second sensing element 330 within the allowable movement range of the positioning block 410, i.e. the first sensor and the second sensor are not in the on state at the same time, which ensures the uniqueness of the zero position. If the rotation structure is only blocked in the whole stroke process, the system can sense the motor rotation blocking signal, so that the fault is directly reported, and zero position judgment is not influenced.

In fact, after the lamp is reset to enter the working state, the control system only controls the lamp to rotate forward and backward within the travel range of 0-540 degrees, and the limit structure of the starting point ensures that the rotating arm 210 rotates reversely and is bound to enter a zero position or is already in the zero position state when the lamp is reset. When a control system or a sensor fails, the rotating arm 210 can collide with the limiting structures of the starting point and the end point, and larger loss is avoided.

Fig. 16 is a schematic diagram of a starting point of the physical limiting of the lamp rotation mechanism, and fig. 17 is a schematic diagram of an ending point of the physical limiting of the lamp rotation mechanism.

In the present invention, the first and second sensing members 310 and 330 employ magnets. The first sensor and the second sensor both adopt Hall sensors. The zero position detection mechanism is formed by combining a magnet and a Hall sensor. Of course, it will be understood that the above sensing can be achieved by changing the type of sensor and the sensing member. For example, a reflective or correlation infrared photosensor, a U-shaped photosensor + sensing barrier, a laser sensing sensor group, a proximity switch, or a microswitch with wheels, which are all within the scope of the present invention, may be used as the collision sensor.

In some embodiments, the maximum stroke of the positioning block 410 can be increased to 636 ° by changing the shapes of the inner limit rib and the outer limit rib of the positioning block and adjusting the position of the second sensing member 330, and the maximum stroke can be reduced to 360 ° -540 °, and the present invention is suitable for a swing mechanism with a unidirectional maximum stroke within 360 ° -630 °.

Referring to fig. 18, a lamp includes a lamp arm 10 and the lamp revolving mechanism of the first aspect, and the lamp arm 10 and the lamp revolving mechanism are fixedly connected. The lamp is a highly integrated product, the structure is compact, and the central hole of the main shaft 220 is also internally provided with the communication and power supply wiring harness of the lamp. The lamp arm 10 is provided with a maintenance opening, the mounting and fixing structures of the first sensor assembly 320 and the second sensor assembly 340 are designed in the maintenance opening of the lamp arm 10, when the first sensor and the second sensor are broken down and need to be replaced, fasteners of the first sensor assembly 320 and the second sensor assembly 340 can be conveniently screwed in the maintenance opening, and rapid maintenance and replacement operations are achieved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A lamp rotating mechanism is characterized by comprising:

the base module comprises a base and a rotating part arranged on the base;

the rotating arm module comprises a rotating arm, a main shaft and a driving mechanism, one end of the main shaft is connected with the rotating arm, the other end of the main shaft is rotatably connected with the rotating part, the driving mechanism drives the rotating arm to rotate, and the driving mechanism is connected with the base through a transmission structure; and

the zero position detection module comprises a first zero position detection mechanism and a second zero position detection mechanism, and when the first zero position detection mechanism and the second zero position detection mechanism are both triggered, the lamp rotation mechanism is located at a zero point.

2. The lamp turning mechanism of claim 1, wherein: the lamp rotating mechanism further comprises a limiting module, the limiting module comprises a positioning block, a first limiting column and a second limiting column, the first limiting column is arranged on the transmission structure, the second limiting column is arranged on the bottom surface of the rotating arm, the positioning block is sleeved on the main shaft, and the positioning block, the first limiting column and the second limiting column limit the starting point and the end point of the rotating arm.

3. The lamp turning mechanism of claim 2, wherein: the locating piece includes positioning disk, first stopper and second stopper, first stopper sets up the outer lane side of positioning disk, the second stopper sets up the outer lane side of first stopper.

4. The lamp turning mechanism of claim 3, wherein: the arc length of first stopper is greater than the arc length of second stopper, the both sides of first stopper are formed with interior spacing flange, the both sides of second stopper are formed with outer spacing flange.

5. The lamp turning mechanism of claim 2, wherein: the transmission structure is synchronous pulley, the transmission structure includes the action wheel, follows the driving wheel and connects the action wheel and the hold-in range from the driving wheel, it is in to follow the driving wheel setting on the base.

6. The lamp turning mechanism of claim 2, wherein: first zero-bit detection mechanism includes first response piece and first sensor subassembly, first response piece sets up week side of base, first sensor subassembly includes first mounting panel and first sensor, first sensor passes through first mounting panel is fixed the rocking arm bottom surface, first response piece with during first sensor interferes, first sensor triggers the on-signal state.

7. The lamp turning mechanism as claimed in claim 6, wherein the second zero position detecting mechanism comprises a second sensing member and a second sensor assembly, the second sensing member is disposed on the positioning block, the second sensor assembly comprises a second mounting plate and a second sensor, the second sensor is fixed on the bottom surface of the rotating arm by the second mounting plate, and the second sensor triggers an on-signal state when the second sensing member interferes with the second sensor.

8. The luminaire swivel mechanism of claim 7, wherein: the first sensing piece and the second sensing piece are magnets.

9. The lamp rotating mechanism as claimed in any one of claims 1 to 8, wherein: the rotating member is a bearing.

10. A light fixture, comprising: a light arm and the light fixture swivel mechanism as claimed in any one of claims 1 to 9, the light arm and the light fixture swivel mechanism being fixedly connected.

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