CN217559637U - Projecting lamp and rotating mechanism thereof - Google Patents

Abstract

The utility model provides a rotating mechanism, it connects an installation department and a rotation portion, including an articulated elements, through articulated elements swing joint between rotation portion and the installation department, the articulated pivot setting of articulated elements is in rotation portion, the free end and the installation department of articulated elements are connected, make rotation portion can overturn along the relative installation department of articulated pivot, wherein, the terminal surface of the free end of articulated elements is provided with a locating part, locating part and installation department, it does not rotate for the rotation to divide equally between the articulated elements and is connected, the locating part makes between installation department and the locating part, homoenergetic relative rotation between locating part and the articulated elements, the locating part can be restricted for the installation department simultaneously, and the locating part is for the turned angle of articulated elements. The utility model provides an adopt above-mentioned slewing mechanism's profection lamp, through this slewing mechanism, can increase the rotation angle of profection lamp for the base, realize the swift adjustment to the illumination angle.

Description

Projecting lamp and rotating mechanism thereof

Technical Field

The utility model relates to a lamps and lanterns field especially relates to an easily rotate profection lamp and slewing mechanism thereof, can realize the no dead angle rotation of profection lamp.

Background

The projection lamp is widely applied, is often installed at the positions such as the periphery of a suspended ceiling, the upper part of furniture, in a wall and the like, is matched with a track or a rotating shaft to realize flexible adjustment of an irradiation angle and an irradiation range, achieves an attractive effect by projecting light rays on an exhibition object, and has the effects of energy conservation, electricity conservation, convenience in installation, attractive appearance and the like.

Most projection lamps in the market are single in irradiation direction, and people often adopt to set up slewing mechanism between projection lamp and base for the light projection of realizing the multi-angle. However, considering the damage to the wire harness caused by the rotation, a limit structure needs to be added in the rotating structure, which in turn causes the generation of the rotating dead angle. For example, the utility model patent with patent number CN201920625548.3 discloses a projection lamp with adjustable irradiation angle, it makes the lamp body can with rotatory support relative rotation 90 in the vertical direction through with lamp body and the articulated mode of connecting post, and rotatory support is equipped with axis of rotation and the pivot hole normal running fit on the base, makes the lamp body can adjust relative mounting base at the horizontal direction and rotates 355. Because the lamp cannot rotate by 360 degrees or more, in practical application, once the rotation angle cannot meet the requirement, the operation is inconvenient, and even the lamp needs to be adjusted again after being detached from the base.

Accordingly, those skilled in the art have endeavored to develop a projector that is easily rotated to increase the rotation angle of the projector relative to the base, thereby allowing for quick adjustment of the illumination angle.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects of the prior art, the present invention is to solve the technical problem of how to increase the rotation angle of the projection lamp relative to the base under the existing rotation limiting mechanism, so that the adjustment of the irradiation angle is more convenient.

In order to realize the above-mentioned purpose, the utility model provides a rotating mechanism, it connects an installation department and a rotation portion, including an articulated elements, through articulated elements swing joint between rotation portion and the installation department, the articulated pivot setting of articulated elements is in rotation portion, the free end and the installation department of articulated elements are connected, make rotation portion can overturn along the relative installation department of articulated pivot, wherein, the terminal surface of the free end of articulated elements is provided with a locating part, locating part and installation department, it does not rotate for rotating to equally divide between the articulated elements to divide, the locating part makes between installation department and the locating part, homoenergetic relative rotation between locating part and the articulated elements, the locating part can restrict the locating part simultaneously for the installation department, and the turned angle of locating part for the articulated elements.

Further, for the rotation of messenger's locating part can go on along vertical direction's fixed axle, the articulated elements is provided with the boss with the tip that the locating part corresponds, and the axle center of boss is coaxial with the axis of rotation of settlement, and the locating part cup joints with the boss for the locating part can rotate for the articulated elements.

Further, boss and articulated elements fixed connection, perhaps boss and articulated elements integrated into one piece form, just so can not make the boss produce relative motion for the articulated elements when the locating part rotates, if the boss is unstable, then can't control the rotation angle.

Furthermore, when the installation part rotates relative to the limiting part, the degree of freedom in the direction perpendicular to the rotation plane needs to be considered, in order to prevent the limiting part from vertically disengaging from the installation part, the installation part is provided with a clamping structure, the limiting part is at least partially (a local structure or a whole structure of the limiting part) embedded by the clamping structure, so as to prevent the limiting part from vertically disengaging from the installation part, and the implementation mode of the technical purpose can include that a clamping platform is arranged on the limiting part to be embedded with the installation part, and a mode that the whole limiting part is contained by the end face of the installation part can also be adopted, and under the arrangement, the movement of the limiting part in the vertical direction is limited, but the relative rotation can be carried out.

The utility model discloses an in the embodiment, the locating part sets up to the annular and includes a spacing collar, and the spacing collar inwards and outwards stands out and form interior stopper and outer stopper in its rotation plane, along with the rotation of locating part, makes the locating part rotate the limited by the interference of boss and installation department respectively to interior stopper and outer stopper on the rotation orbit. From the result of use, when the relative spacing collar of installation department rotated, can rotate and be close the round, because of the limited unable continuation rotation that can't of outer stopper, and the locating part can also further expand rotation range through interior stopper in the articulated elements.

As the utility model discloses an optional implementation scheme, at the terminal surface side of installation department, the spacing collar rotationally cup joints outside the installation department terminal surface or rotationally scarf joint inside the installation department, and the installation department is provided with outer dog at the rotation plane internal fixation of spacing collar, and outer dog is in on the rotation orbit of the outer stopper of spacing collar to the rotation of restriction spacing collar for the installation department.

Optionally, the boss is laterally provided with a limiting surface, and a moving space of the inner limiting block is formed between the limiting surface and the inner ring surface of the limiting ring. Generally, the rotation track formed by the inner limiting block rotating along with the limiting ring is a minor arc. Because of the spacing collar need rotate along the boss, the boss should be in the footpath and should touch the inner circle face that reaches the spacing collar, just so can not cause the swing because of the space when relative rotation, in view of the above, because of the interior stopper activity space that spacing face partition formed, the radian of its cambered surface just should be less than 180. The specific structure of the limiting surface is not limited, but in order to form a surrounding relationship with the inner annular surface of the limiting ring, the preferred surface direction of the limiting surface is a vertical direction or a direction close to the vertical direction, and a curved surface or a flat surface can be implemented.

The utility model discloses an in the preferred embodiment, the installation department has the inner chamber, and the spacing collar is rabbeted in the installation department inner chamber, and the periphery of inner chamber has the ring channel that provides outer stopper rotation space, is provided with a backstop muscle in the ring channel, makes the non-closed circular of rotation orbit of outer stopper. Through the inner chamber, on the one hand with the spacing collar scarf joint in inside, prevent breaking away from of spacing collar, on the other hand sets up the backstop muscle in the inner chamber, with outer stopper mutual interference, has prevented excessive rotation. For the lamps, the cables in the lamps are protected, and damage caused by twisting of the cables is prevented.

Preferably, a locking mechanism is embedded between the limiting member and the hinged member, so that the limiting member can lock the rotating angle after rotating relative to the hinged member, and the locking mechanism aims at increasing the resistance effect between the limiting member and the hinged member and stabilizing the relative position under the non-external force effect. One embodiment is a locking ring, which plays a damping role, and can be selected as an elastic ring such as a rubber ring, and the elastic ring is embedded between the limiting part and the hinge part.

Based on the application of the scheme, the utility model provides a projection lamp, the projection lamp includes the base, a lamp section of thick bamboo and light source subassembly and the lens subassembly that sets up in a lamp section of thick bamboo, the rotation part is a lamp section of thick bamboo, the installation department is the base, rotationally connect through above-mentioned slewing mechanism between a lamp section of thick bamboo and the base, the articulated pivot of articulated elements sets up on a lamp section of thick bamboo, the free end and the base of articulated elements are connected, the light source subassembly includes the light source, the light source passes through the lens subassembly and emits light, wherein, lamp section of thick bamboo inboard has first cavity and second cavity, the light source subassembly includes control module and light-emitting module, control module and light-emitting module electricity are connected, control module installs in first cavity and can control and adjust luminance, light-emitting module installs on the interface of first cavity and second cavity and can emit light to second cavity direction; the lens component is arranged in the second cavity adjacent to the light source component and comprises a lens and a light-transmitting sheet arranged in the light-emitting direction of the lens.

Furthermore, a telescopic cylinder is arranged in the second cavity, the lens assembly is installed in the telescopic cylinder, the outer wall of the telescopic cylinder is movably connected with the inner wall of the lamp cylinder, and therefore the position of the telescopic cylinder can be adjusted in the light emitting direction of the lens relative to the lamp cylinder. The telescopic cylinder and the lamp cylinder can be connected through a sliding groove and also can be connected through threads, when the sliding groove is used, the telescopic cylinder can stretch out and draw back through relative sliding, when threads are used, the inner wall of the lamp cylinder is provided with internal threads, the telescopic cylinder is provided with external threads, and the telescopic adjustment of the telescopic cylinder relative to the lamp cylinder is realized through a spiral mode.

The light-transmitting sheet can be a light-transmitting film layer or light-transmitting glass, and can also be a light filter, and is arranged in the light-emitting direction of the lens and mainly used for adjusting illumination parameters.

Optionally, the lamp barrel can be arranged in a split structure, specifically, an end cover is arranged at the end part of the lamp barrel, the end cover is connected with the lamp barrel through threads, and the telescopic barrel is internally connected with the end cover through threads, so that the end cover can be rapidly detached together with the telescopic barrel by unscrewing the end cover, and the lamp barrel is more convenient to install and use.

In order to protect the internal structure of the lamp tube to realize the isolation to the outside, the inner wall of the end cover is provided with a ring groove for installing a sealing ring, and the sealing ring is used for sealing the gap between the telescopic tube and the end cover.

The upper part of the inner side of the telescopic cylinder is used for mounting the lens component. In one alternative scheme, a step groove is formed along one circle of the inner wall, and a mounting space of the lens assembly is formed above the step groove and used for fixedly mounting the lens assembly. The lens and the light-transmitting sheet are sequentially arranged on the step groove from top to bottom.

Form the lamp plate between first cavity and the second cavity, light emitting module's light source is fixed to be set up on the lamp plate surface.

The utility model discloses an among the embodiment, the lamp plate downside is provided with the installation piece, is used for fixed light source on the installation piece, for example, sets up a profile groove at the installation piece, and the profile groove holds the light source, and through installing in the light source downside with lamp plate fixed connection, there is the light trap at the center of installation piece, and is corresponding with the light-emitting direction of light source. The light source can be formed for LED lamp pearl or COB encapsulation.

Preferably, a heat dissipation block is arranged on the other side of the lamp panel opposite to the light source for conducting heat of the light source. Because the light-emitting module can generate heat when working, the light source needs to be timely cooled to stabilize the working environment of the light source, and a plurality of cooling fins are distributed inside the first cavity for the inside of the lamp barrel.

More specifically, be provided with the upper cover plate in the first cavity, control module installs the space in upper cover plate below, and the upper cover plate still is equipped with the control key, is connected through the wire electricity between control key and the control module, can manually carry out the switching of lighting parameter through the control key during the use.

The technical effects are as follows:

the utility model discloses a slewing mechanism to be applied to the connection structure of profection lamp and base on, except the upset through articulated pivot, can also realize the rotation of profection lamp self, realized shining the diversified adjustable of angle. The utility model discloses further provide a supply the structure of the locating part of rotation, broken through existing rotation restriction, can realize the rotation at no dead angle, make the regulation of shining the angle more convenient.

The conception, the specific structure and the technical effects produced by the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

Fig. 1 is a longitudinal sectional view of the projector lamp of the present invention.

Fig. 2 is an exploded view of a rotating mechanism of the projector lamp of the present invention.

Fig. 3 is an exploded view of the inner parts of the lamp cartridge of the projector lamp according to the present invention.

Fig. 4 is a schematic structural diagram of 2 embodiments of the positioning member in the rotating mechanism of the projector lamp of the present invention.

Fig. 5 is a schematic structural diagram of a base and a limiting member according to an embodiment of the projection lamp of the present invention.

Fig. 6 is a sectional view of the position relationship of the stopper member in fig. 5 engaged with the base.

Fig. 7 is a schematic structural view of a base and a stopper according to another embodiment of the projection lamp of the present invention.

Fig. 8 is a schematic view of the operation states of the limiting member in the rotating mechanism, (a) the normal position, and (b) the limiting position.

Fig. 9 is a schematic view of a state of use of the projector lamp of the present invention.

Wherein:

100 mounting parts, 100a bases, 110 base inner cavities, 111 annular grooves, 112 stop ribs, 120 outer stops, 200 rotating parts, 200a lamp tubes, 201 first cavities, 202 second cavities, 203 lamp panels, 204 upper cover plates, 205 control keys, 206 leads, 207 mounting blocks, 208 heat dissipation blocks, 209 heat dissipation fins, 210 light source assemblies, 211 control modules, 212 light emitting modules, 213 light sources, 220 lens assemblies, 221 lenses, 222 light transmission sheets, 230 telescopic tubes, 231 stepped grooves, 232 spiral covers, 233 end covers, 234 grooves, 235 sealing rings, 300 rotating mechanisms, 310 hinge parts, 311 hinge shafts, 320 limiting parts, 321 limiting rings, 3211 inner limiting blocks, 3212 outer limiting blocks, 330 bosses, 331 limiting surfaces, 340 through holes, 350 fixing screws and 360 locking rings.

Detailed Description

The utility model provides a rotating mechanism 300, and the components of this rotating mechanism 300 and its parts are shown in fig. 1 to 9. The rotating mechanism connects a mounting portion 100 and a rotating portion 200, and includes a hinge 310, the rotating portion 200 is movably connected to the mounting portion 100 through the hinge 310, a hinge rotating shaft 311 of the hinge 310 is disposed on the rotating portion 200, and a free end of the hinge 310 is connected to the mounting portion 100, so that the rotating portion 200 can be turned over relative to the mounting portion 100 along the hinge rotating shaft 311. A limiting member 320 is disposed on an end surface of a free end of the hinge 310, the limiting member 320 is rotatably connected to the mounting portion 100 and the hinge 310, the mounting portion 100 and the limiting member 320, and the limiting member 320 and the hinge 310 can rotate relatively at the abutting surfaces, and the limiting member 320 can limit a rotation angle of the limiting member 320 relative to the mounting portion 100 and a rotation angle of the limiting member 320 relative to the hinge 310. The end of the hinge 310 corresponding to the position-limiting member 320 is provided with a boss 330, the position-limiting member 320 is sleeved with the boss 330, and the position-limiting member 320 can rotate relative to the hinge 310.

The limiting member 320 is annular and includes a limiting ring 321, the limiting ring 321 protrudes inward and outward in a rotation plane thereof to form an inner limiting member 3211 and an outer limiting member 3212, and along with the rotation of the limiting member 320, the boss 330 and the mounting portion 100 interfere with the inner limiting member 3211 and the outer limiting member 3212 on a rotation track, respectively, so that the rotation of the limiting member 320 is limited.

On the end face side of the mounting part 100, the limiting ring 321 is rotatably sleeved outside the end face of the mounting part 100 or rotatably embedded in the mounting part 100, a stop is fixedly arranged on the mounting part 100 in a rotating plane of the limiting ring 321, and the stop is positioned on a rotating track of the outer limiting block 3212 of the limiting ring 321, so that the rotation of the limiting ring 321 relative to the mounting part 100 is limited.

The boss 330 has a lateral limiting surface 331, a moving space of the inner limiting block 3211 is formed between the limiting surface 331 and the inner annular surface of the limiting ring 321, and a rotation track formed by the inner limiting block 3211 rotating along with the limiting ring 321 is a minor arc.

According to the above-mentioned embodiment of the rotating mechanism, the present invention provides a projection lamp, as shown in fig. 1 to 9. In the embodiment of the present invention, the mounting portion 100 is embodied as a base 100a, and the rotating portion 200 is embodied as a lamp cartridge 200a. Fig. 1 is a schematic cross-sectional view of the projector lamp, which mainly comprises a base 100a, a lamp barrel 200a, and a light source assembly 210 and a lens assembly 220 disposed in the lamp barrel 200a, wherein, in appearance, the lamp barrel 200a is connected to the base 100a through a hinge 310, a hinge rotating shaft 311 of the hinge 310 is disposed on the lamp barrel 200a, and a free end of the hinge 310 is connected to the base 100 a.

The light source assembly 210 includes a light source 213, the light source 213 emits light through a lens assembly 220, wherein the inside of the lamp barrel 200a has a first cavity 201 and a second cavity 202, the light source assembly 210 includes a control module 211 and a light emitting module 212, the control module 211 is electrically connected with the light emitting module 212, the control module 211 is installed in the first cavity 201 and can control dimming, the top end of the first cavity 201 is provided with an upper cover plate 204, the control module 211 is installed in a space below the upper cover plate 204, the upper cover plate 204 is further provided with a control key 205, the control key 205 is electrically connected with the control module 211 through a wire 206, and during use, the lighting parameters can be manually switched through the control key 205. The wire 206 penetrates through the base 100a and the hinge 310, penetrates into the lamp tube 200a, and is connected to the control module 211 for supplying power, and the control module 211 is connected to the light emitting module 212 for operating the same.

The light emitting module 212 is mounted on an interface between the first cavity 201 and the second cavity 202 and can emit light toward the second cavity 202; the lens assembly 220 is disposed in the second cavity 202 adjacent to the light source assembly 210, and includes a lens 221 and a light-transmissive sheet 222 disposed in a light-emitting direction of the lens 221. The transparent sheet 222 may be a transparent film or a transparent glass, or may be a filter, which is installed in the light-emitting direction of the lens and is mainly used for adjusting the illumination parameters.

A lamp panel 203 is formed between the first cavity 201 and the second cavity 202, and a light source 213 of the light emitting module 212 is fixedly arranged on the surface of the lamp panel 203. In the embodiment of the present invention as shown in fig. 1 and fig. 3, the lamp panel 203 is provided with a mounting block 207 on the lower side thereof, the mounting block 207 is used for fixing the light source 213, for example, the mounting block 207 is provided with a contour groove, the contour groove accommodates the light source 213, the mounting block 207 is fixedly connected with the lamp panel 203 by screws and is mounted on the lower side of the light source 213, and the center of the mounting block 207 has a light hole corresponding to the light emitting direction of the light source 213. Light source 213 may be formed by an LED bead or COB package.

Because the requirement in the aspect of heat dissipation needs to be considered, a heat dissipation block 208 is arranged on the other side of the lamp panel 203 opposite to the side where the light source 213 is installed, and is used for conducting heat of the light source 213; a plurality of heat dissipation fins 209 are disposed inside the first cavity 201 in the lamp barrel 200a, and the form of the heat dissipation fins 209 may be selected as heat dissipation fins.

As shown in fig. 1 and 2, a telescopic cylinder 230 is disposed in the second cavity 202, the lens assembly 220 is mounted in the telescopic cylinder 230, and an outer wall of the telescopic cylinder 230 is movably connected to an inner wall of the light tube 200a, so that the telescopic cylinder 230 can be adjusted in position relative to the light tube 200a in the light emitting direction of the lens 221. The telescopic cylinder 230 and the lamp cylinder 200a can be connected through a sliding groove and also can be connected through threads, when the sliding groove is used, the telescopic cylinder 230 can stretch out and draw back through relative sliding, when the threads are used, as shown in fig. 3, the inner wall of the lamp cylinder 200a is provided with internal threads, the telescopic cylinder 230 is provided with external threads, and the telescopic adjustment of the telescopic cylinder 230 relative to the lamp cylinder 200a is realized through a spiral mode.

Inside the telescopic tube 230, the upper part thereof is used for mounting the lens assembly 220. As shown in fig. 1 and 3, a step groove 231 is formed along the inner wall in a circle, and a mounting space of the lens assembly 220 is formed above the step groove 231 for fixedly mounting the lens assembly 220. The lens 221 and the light-transmitting sheet 222 are sequentially mounted on the stepped groove 231 up and down. After the lens 221 is installed, in order to prevent looseness, a screw cap 232 can be additionally installed above the lens 221, the screw cap 232 is of a topless annular wall structure, the inner wall of the telescopic cylinder 230 is connected through threads, and the lower end face of the outer wall of the screw cap 232 presses the lower side of the lens 221 downwards to fix the lens 221.

Alternatively, the lamp barrel 200a may be provided as a separate structure, and specifically, the end of the lamp barrel 200a is provided with the end cap 233, the end cap 233 is connected to the lamp barrel 200a by a screw, and the telescopic barrel 230 is connected to the end cap 233 by a screw, so that the end cap 233 can be quickly detached together with the telescopic barrel 230 by unscrewing the end cap 233, and the installation and use are more convenient. In order to protect the inner structure of the lamp barrel 200a from outside, the inner wall of the end cap 233 is provided with a ring groove 234 for installing a sealing ring 235, and the sealing ring 235 is used for sealing the gap between the telescopic barrel 230 and the end cap 233.

The utility model discloses connect slewing mechanism 300 between lamp section of thick bamboo 200a and base 100a and optimize, as shown in fig. 1 and fig. 2, the terminal surface at the free end of articulated elements 310 is provided with a locating part 320, equally divide between locating part 320 and base 100a, the articulated elements 310 and do not be for rotating the connection, locating part 320 makes between base 100a and the locating part 320, homoenergetic relative rotation between locating part 320 and the articulated elements 310, locating part 320 can restrict locating part 320 simultaneously for base 100a, and the turned angle of locating part 320 for the articulated elements 310.

In order to enable the rotation of the limiting member 320 to be performed along the fixed shaft in the vertical direction, a boss 330 is disposed at an end of the hinge 310 corresponding to the limiting member 320, an axis of the boss 330 is coaxial with the set rotation axis, and the limiting member 320 is sleeved with the boss 330, so that the limiting member 320 can rotate relative to the hinge 310.

As shown in fig. 2, the boss 330 is screwed into a mounting hole of the hinge 310 by a screw integrally formed with the boss 330, after mounting, a portion of the boss 330 exposed from the hinge 310 is used for mounting the position limiting member 320, and the through hole 340 in the middle of the boss 330 is used for the lead wire 206 to pass through to the inside of the lamp barrel 200a. To strengthen the connection of the boss 330, a fixing screw 350 is laterally penetrated through the boss 330 to directly act on the side of the boss 330, thereby preventing the boss 330 from moving relative to the hinge member 310.

In addition, a locking ring 360 is embedded between the position-limiting member 320 and the hinge 310, and the locking ring 360 plays a damping role, so that the position-limiting member 320 can lock the rotation angle after rotating relative to the hinge 310.

As shown in fig. 4, the limiting member 320 is configured to be annular and includes a limiting ring 321, the limiting ring 321 protrudes inward and outward in a rotation plane to form an inner limiting block 3211 and an outer limiting block 3212, and as the limiting member 320 rotates, the boss 330 and the base 100a respectively interfere with the inner limiting block 3211 and the outer limiting block 3212 on a rotation track, so that the limiting member 320 is limited to rotate. As shown in fig. 4 (a), the position-limiting element 320 may be only a position-limiting ring 321, which is embedded in the base 100a (as shown in fig. 5 and 6), or may be a collar structure including the position-limiting ring 321 as shown in fig. 4 (b), which is inserted between the base 100a and the hinge 310 as a transition element (as shown in fig. 7).

Fig. 5 and 6 show a preferred embodiment of the present invention, in which the base 100a has an annular inner cavity, the limiting ring 321 is embedded in the inner cavity 110 of the base, the outer periphery of the inner cavity has an annular groove 111 providing a rotation space of the outer limiting block 3212, and a stopping rib 112 (shown in fig. 5) is protrudingly disposed at a position in the annular groove 111, so that the rotation track of the outer limiting block 3212 is non-closed circular. Through the inner cavity, on one hand, the limiting ring 321 is embedded inside to prevent the limiting ring 321 from being separated, and on the other hand, the stopping rib 112 is arranged in the inner cavity to interfere with the outer limiting block 3212 to prevent excessive rotation. For the lamp, the cable in the lamp is protected, and damage caused by twisting of the cable is prevented. For ease of disassembly, the base 100a may be configured to include the stop collar 321 in a two-to-one assembly.

Fig. 7 shows another embodiment of the present invention, in which the stop collar 321 is a collar structure, the upper side of which is inserted by a shaft of the base 100a, and the lower side of which is sleeved on the outer edge of the boss 330 of the hinge 310. At this time, the end surface of the base 100a is adjacent to the end surface of the limiting ring 321, and in order to achieve the limiting by cooperating with the outer limiting block 3212 of the limiting ring 321, the outer stopper 120 is protruded from the end surface of the base 100a, and the outer stopper 120 is located on the rotation track of the outer limiting block 3212 of the limiting ring 321, so that the rotation of the limiting ring 321 relative to the base 100a can be limited externally.

According to the positional relationship of fig. 5 to 7, since the base 100a is provided with the outer stopper 120 or the inner stopper rib 112, when rotating relative to the stopper ring 321, the outer stopper 120 or the stopper rib 112 can rotate circumferentially around the stopper ring 321 from one side end of the outer stopper 3212 to the other side end of the outer stopper 3212 by interference on an inner or outer trajectory, in which case, the angle of rotation is less than 360 °.

Further, in a specific embodiment of the present invention, as shown in fig. 8 (a) and 8 (b), the boss 330 has a lateral limiting surface 331, the limiting surface 331 is vertical or close to vertical, an active space of the inner limiting block 3211 is formed between the limiting surface 331 and the inner ring surface of the limiting ring 321, when the rotation of the limiting member 320 relative to the base 100a is limited by the outer limiting block 3212, the inner limiting block 3211 can still continue to move from one end of the arc space to the other end in the active space of the boss 330, so that the upper limit of the rotation angle is increased by continuing to rotate along the boss 330.

Fig. 9 shows the working state of the projector lamp of the present invention, in use, the base 100a is a fixed end, and the lamp barrel 200a can firstly swing along the hinge axis perpendicular to the direction of the hinge axis through the hinge 310, and secondly can also rotate with the boss 330 on the hinge axis as the rotation center, so as to realize multi-angle irradiation; the telescopic cylinder 230 of the projector lamp can be telescopic through screw thread rotation, so as to achieve the function of focusing. Based on the structure, various illumination purposes can be achieved.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. A rotating mechanism, which connects an installation part (100) and a rotating part (200), comprises a hinge (310), the rotating part (200) is movably connected with the installation part (100) through the hinge (310), a hinge rotating shaft (311) of the hinge (310) is arranged on the rotating part (200), the free end of the hinge (310) is connected with the installation part (100) to ensure that the rotating part (200) can overturn relative to the installation part (100) along the hinge rotating shaft (311), and is characterized in that,

the end face of the free end of the hinge piece (310) is provided with a limiting piece (320), the limiting piece (320) is respectively in rotating connection with the mounting portion (100) and the hinge piece (310), the mounting portion (100) and the limiting piece (320) and the hinge piece (310) can rotate relatively at the joint face, and the limiting piece (320) can limit the rotating angle of the limiting piece (320) relative to the mounting portion (100) and the limiting piece (320) relative to the hinge piece (310).

2. The rotating mechanism according to claim 1, wherein a boss (330) is disposed at an end of the hinge member (310) corresponding to the stopper (320), the stopper (320) is sleeved with the boss (330), and the stopper (320) can rotate relative to the hinge member (310).

3. The rotating mechanism according to claim 2, wherein the boss (330) is fixedly connected to the hinge member (310), or the boss (330) is integrally formed with the hinge member (310).

4. The rotating mechanism according to claim 2, characterized in that the mounting portion (100) is provided with a snap-in structure, the retainer (320) being at least partially engaged by the snap-in structure to prevent vertical disengagement of the retainer (320) with respect to the mounting portion (100).

5. The rotating mechanism according to claim 2, wherein the limiting member (320) is configured as a ring and comprises a limiting ring (321), the limiting ring (321) protrudes inward and outward in its rotating plane to form an inner limiting member (3211) and an outer limiting member (3212), and as the limiting member (320) rotates, the boss (330) and the mounting portion (100) interfere with the inner limiting member (3211) and the outer limiting member (3212) on the rotating track respectively, so that the limiting member (320) is limited in rotation.

6. The rotating mechanism according to claim 5, characterized in that, at the end face side of the mounting part (100), the limiting ring (321) is rotatably sleeved outside the end face of the mounting part (100) or rotatably embedded inside the mounting part (100), the mounting part (100) is fixedly provided with a stop in the rotating plane of the limiting ring (321), and the stop is positioned on the rotating track of the outer limiting block (3212) of the limiting ring (321) so as to limit the rotation of the limiting ring (321) relative to the mounting part (100).

7. The rotating mechanism according to claim 6, wherein the boss (330) has a limiting surface (331) in a lateral direction, a moving space of the inner limiting block (3211) is formed between the limiting surface (331) and an inner ring surface of the limiting ring (321), and a rotating track formed by the inner limiting block (3211) rotating along with the limiting ring (321) is a minor arc.

8. The rotating mechanism according to claim 7, wherein the mounting portion (100) has an inner cavity, the stop collar (321) is embedded in the inner cavity of the mounting portion (100), the outer peripheral portion of the inner cavity has an annular groove (111) providing a rotating space for the outer stop block (3212), and a stop rib (112) is provided in the annular groove (111).

9. The rotating mechanism according to claim 2, wherein a locking mechanism is engaged between the limiting member (320) and the hinge member (310), and the locking mechanism enables the limiting member (320) to lock the rotating angle after rotating relative to the hinge member (310).

10. A projector comprising a rotating mechanism according to any one of claims 1 to 9, wherein the projector comprises a base (100 a) and a lamp cartridge (200 a), and the base (100 a) and the lamp cartridge (200 a) are rotatably connected by the rotating mechanism.

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