CN116265798A

CN116265798A - Ceiling mounting structure and projector adopting same

Info

Publication number: CN116265798A
Application number: CN202111544520.5A
Authority: CN
Inventors: 蒋峰
Original assignee: Chengdu Jimi Technology Co Ltd
Current assignee: Chengdu Jimi Technology Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2023-06-20
Also published as: WO2023109304A1

Abstract

The invention discloses a ceiling mounting structure, which comprises a hanging disc, a hook, an electric connection female end and an electric connection male end, wherein the electric connection female end is arranged on the hanging disc, the hook and the electric connection male end are connected to a fitting to be assembled, the electric connection female end and the electric connection male end are connected in a plug-in manner along a first direction, a clamping part matched with the hook is arranged on the hanging disc, the clamping part is provided with a movable area for the hook to move along a second direction so as to adjust the fitting to be assembled, the second direction is perpendicular to the first direction, and the electric connection female end and the electric connection male end are stably connected when the hook moves in the clamping part along the second direction. The invention can realize flexible adjustment, and the adjustment process keeps reliable assembly state and electric connection state, thereby ensuring mechanical connection assembly in place and stable power supply, and being convenient and quick to install and operate.

Description

Ceiling mounting structure and projector adopting same

Technical Field

The invention relates to the technical field of mounting and connecting structures, in particular to a ceiling mounting structure and a projector adopting the same.

Background

The ceiling mounting structure is a mounting structure close to a ceiling, occupies small space and has good overall aesthetic property, and the ceiling lamp and the ceiling projector are more commonly provided with the ceiling mounting structure at present. At present, a ceiling lamp and a ceiling mounting structure for a ceiling projector are usually not adjustable after being mounted in place, but only one ceiling mounting structure is completely mounted in place, and cannot be flexibly adjusted according to actual conditions, for example, a lens of the projector needs to be opposite to a projection wall surface, sound equipment needs to be adjusted in a sound emitting direction and the like, and the projection direction or the position of the projector needs to be adjusted due to mounting errors and the like, but the existing ceiling mounting structure cannot be adaptively adjusted, and once forced adjustment is carried out, a power supply assembly is not fully coupled to influence power supply stability, or the equipment is not assembled in place to loose or even fall-off conditions are caused.

Disclosure of Invention

The invention aims to solve the technical problems and the technical task of improving the prior art, provides a ceiling mounting structure, and solves the problems that the traditional ceiling mounting structure in the prior art is difficult to flexibly adjust according to the needs and ensures the mounting reliability.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the utility model provides a ceiling mounting structure, includes hanging dish, couple, electricity connect female end and electricity and connect the male end, the female end setting of electricity is connected on hanging dish, couple and electricity are connected the male end and are connected on waiting to adorn the accessory, the female end of electricity is connected the male end along first direction plug with the electricity and is connected, be provided with on the hanging dish with couple matched with joint portion, joint portion has the activity region that supplies the couple to follow the second direction activity in order to adjust waiting to adorn the accessory, is provided with spacing portion respectively at the both ends that the joint portion follows the second direction, second direction perpendicular to first direction, when the couple moves in joint portion the female end of electricity is connected with the electricity and is kept stable the connection.

The ceiling mounting structure can realize flexible adjustment, the stable assembly state and the electric connection state can be maintained in the adjustment process, the electric connection female end and the electric connection male end can be maintained in the stable electric connection state when the hooks move along the second direction in the clamping part, in other words, the hooks are fully inserted into the electric connection female end and the electric connection male end when the hooks are stably clamped in the clamping part, and no matter how the hooks move along the second direction in the clamping part, no matter how the hooks move along the first direction, namely no movement in the first direction is generated between the electric connection female end and the electric connection male end, the reliable electric connection state is maintained, the power supply stability is ensured, and finally, the stable and reliable work of the fitting to be assembled can be ensured when the fitting to be assembled is adjusted to the optimal position.

Further, the electric connection female end is movably connected to the hanging plate, and the moving direction is parallel to the second direction;

or the electric connection male end is movably connected to the fitting to be assembled, and the moving direction is parallel to the second direction;

or the electric connection female end and the electric connection male end can relatively move in the second direction and keep electric connection.

When the electric connection female end is movably connected to the hanging plate or the electric connection male end is movably connected to the fitting to be assembled, the fitting to be assembled moves along a second direction relative to the hanging plate, and the electric connection female end moves along the second direction relative to the hanging plate or the electric connection male end moves along the second direction relative to the fitting to be assembled, both the two modes can always ensure that the electric connection female end and the electric connection male end are stably connected and are not separated; the mode of relatively moving in the second direction and maintaining the electric connection between the electric connection female end and the electric connection male end is that the electric connection female end and the electric connection male end have the function of relatively moving in the second direction and maintain stable electric connection while relatively moving, and the electric connection female end or the electric connection male end is provided with a conductive part extending in the second direction, so that the electric connection can still be stably realized after the electric connection female end or the electric connection male end relatively move.

Further, the second direction is a circular ring direction, and at least one of the electric connection female end and the electric connection male end is provided with a circular ring-shaped conductive part concentric with the second direction. The circular conductive part enables the electric connection female end and the electric connection male end to rotate freely and relatively and simultaneously keep stable electric connection, the coupling of the electric connection female end and the electric connection male end is free of limitation in the second direction, the use flexibility is better, the electric connection reliability is high, the rotation of the to-be-assembled part to adjust the orientation angle of the to-be-assembled part can be achieved, compared with the mode that the electric connection female end is movably connected to the hanging disc and the electric connection male end is movably connected to the to-be-assembled part, the reliability is higher, the implementation is more convenient, the electric connection female end is fixedly connected to the hanging disc and the electric connection male end is fixedly connected to the to-be-assembled part, the cable connected to the electric connection female end and the electric connection male end can be prevented from being influenced by the movable connection, and the electric connection reliability is guaranteed.

Furthermore, the clamping part is an L-shaped flanging, the hook is L-shaped, the structure is simple, the occupied space is small, the fitting to be assembled is enabled to be closer to the ceiling, the aesthetic property is better, the implementation is convenient, and the cost is low.

Further, at least one of the limiting parts at two ends of the clamping part along the second direction is provided with an opening for the hook to enter and exit the clamping part, a distance along the first direction is reserved between the opening and the clamping part, the hook is convenient to enter and exit the clamping part, the hook needs to move a certain distance along the direction (the first direction) of further inserting and matching between the electric connection female end and the electric connection male end, and then the hook can reach the position of the opening, otherwise, the hook can be blocked by the limiting part and cannot exit the clamping part.

Further, a guiding part is arranged on the hanging plate, a matching part is arranged on the fitting to be assembled, and the guiding part and the matching part are matched along a first direction. The matching of the guide part and the matching part plays a role in positioning and guiding the butt joint of the electric connection female end and the electric connection male end, so that the electric connection female end and the electric connection male end are ensured to be aligned, and stable electric connection is realized by reliable plugging.

Further, the hanging disc is also connected with a wire harness cover, and the wire harness cover is used for covering an external cable connected to the electric connection female end, and effectively protecting the external cable when the fitting to be assembled is adjusted along the second direction relative to the hanging disc.

Further, the hanging plate is also connected with a positioning piece, and the positioning piece is matched with the peripheral edge of the fitting to be assembled to position. When the fitting is to be installed, the alignment piece is matched with the peripheral edge of the fitting to be installed, namely the alignment piece is in an exposed visual state, so that the fitting to be installed and the hanging plate can be conveniently and accurately aligned to each other, visual installation is performed, blind operation is avoided, the installation is more convenient, repeated adjustment attempts are effectively avoided, and the installation efficiency is improved.

Further, a second positioning part for positioning in a second direction is further arranged on the alignment member. The alignment part is mainly used for enabling the to-be-assembled part to be opposite to the hanging plate, enabling the electric connection female end to be opposite to the electric connection male end, enabling the electric connection female end to be reliably connected with the electric connection male end in an inserting mode, enabling the to-be-assembled part to be in deviation in a second direction, enabling the to-be-assembled part to be accurately positioned in the second direction by means of the second positioning part, and enabling the hook to conveniently enter the clamping part.

Further, the alignment member is provided with a first positioning part positioned at the outer side of the fitting to be assembled, and the peripheral edge of the fitting to be assembled is abutted against the first positioning part to be positioned. The positioning is more accurate and the operation is more convenient.

A projector comprises the ceiling mounting structure.

Compared with the prior art, the invention has the advantages that:

the ceiling mounting structure can realize flexible adjustment, and the adjustment process keeps a reliable assembly state and an electric connection state, so that the mechanical connection assembly is ensured to be in place, the loosening and even falling off conditions are avoided, the power supply is ensured to be stable, the stable and reliable work of the fitting to be mounted is ensured when the fitting to be mounted is adjusted to the optimal position, and the mounting operation is convenient and quick.

Drawings

FIG. 1 is an exploded view of a first embodiment of a roof mount structure;

FIG. 2 is a schematic view of the structure of the electrical connection female end connected to the hanging plate;

FIG. 3 is a schematic view of the structure of detail A in FIG. 2;

FIG. 4 is a schematic view of the construction of a fitting to be assembled by a ceiling mounting structure;

fig. 5 is a schematic view of a partial cross-sectional structure after assembly.

In the figure:

the wire harness connector comprises a hanging plate 1, a clamping part 11, a limiting part 12, an opening 13, a hook 2, an electric connection female end 3, an electric connection male end 4, a fitting 5 to be assembled, a guide part 61, a matching part 62, a wire harness cover 7, an alignment member 8, a first positioning part 81 and a second positioning part 82.

Detailed Description

The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The ceiling mounting structure disclosed by the embodiment of the invention can be flexibly adjusted according to the needs, and can ensure the connection reliability in any adjustment state, so that the mechanical connection is ensured to be assembled in place, the loosening and even falling-off conditions are avoided, the power supply connection reliability is ensured, and the poor contact condition is effectively avoided.

Example 1

As shown in fig. 1, a ceiling mounting structure mainly comprises a hanging plate 1, a hook 2, an electric connection female end 3 and an electric connection male end 4, wherein the electric connection female end 3 is fixedly connected to the hanging plate 1 and is used for being connected with an external power supply cable, the hook 2 and the electric connection male end 4 are fixedly connected to a fitting 5 to be assembled, the electric connection male end 4 is electrically connected with a device in the fitting 5 to be assembled, the electric connection female end 3 and the electric connection male end 4 are connected in a plug-in manner along a first direction, when the electric connection female end 3 and the electric connection male end 4 are plugged in together, the power supply of the fitting 5 to be assembled is realized, a clamping part 11 matched with the hook 2 is arranged on the hanging plate 1, the clamping part 11 is provided with a movable area for the hook 2 to move along a second direction so as to adjust the fitting 5 to be assembled, two ends of the clamping part 11 along the second direction are respectively provided with a limiting part 12, the limiting part 12 plays a limiting role on the hook 2, preventing the hook 2 from falling out of the clamping part 11, keeping the matched connection state of the hook 2 and the clamping part 11, namely always keeping the state that the hook 2 and the hanging plate 1 are assembled in place, wherein the second direction is perpendicular to the first direction, the electric connection female end 3 and the electric connection male end 4 can relatively move in the second direction and keep electric connection, because the hook 2 and the electric connection male end 4 are fixedly connected with the fitting 5, when the hook 2 moves along the second direction relative to the clamping part 11 on the hanging plate 1, the electric connection male end 4 also moves along the second direction relative to the electric connection female end 3, no matter how the hook 2 moves along the second direction in the clamping part 11, the movement amount in the first direction is not generated, and the electric connection female end and the electric connection male end keep a stable plugging state, the female end of electric connection and the male end of electric connection can not be further inserted or separated, so that a reliable electric connection state is maintained, and stable power supply is ensured.

In order to enable the relative movement between the electrical connection female end 3 and the electrical connection male end 4 in the second direction and to maintain the electrical connection when the hook 2 moves in the second direction with respect to the clamping portion 11, it is necessary that at least one of the electrical connection female end 3 and the electrical connection male end 4 has a conductive portion extending in the second direction. Assuming that the second direction is a straight line direction, the conductive part extending along the second direction is arranged on the electric connection female end 3, that is, the long conductive part extending along the second direction is arranged on the electric connection female end 3, the conductive elastic piece elastically abutting against the wall surface of the conductive part of the electric connection female end 3 is arranged on the electric connection male end 4, and when the electric connection male end 4 moves in the second direction relative to the electric connection female end 3, the conductive elastic piece of the electric connection male end 4 strokes along the wall surface of the conductive part of the electric connection female end 3, so that a stable electric connection state is always maintained, and the condition of power supply interruption cannot occur.

In this embodiment, the to-be-assembled component 5 may be electronic devices such as a projector and an audio device, where the electronic devices have certain requirements on an installation direction, and the projector is taken as an example, and the installation direction of the electronic devices needs to be adjusted by a projection orientation angle, in other words, the to-be-assembled component 5 needs to be rotated in a circumferential direction to adjust a lens orientation of the projector, so that the lens of the projector faces the projection curtain, thereby guaranteeing a projection effect, and the second direction is a circular direction, and the hook 2 moves along the second direction relative to the clamping part 11, that is, the to-be-assembled component 5 rotates relative to the hanging disc 1, thereby realizing a function of adjusting the orientation of the to-be-assembled component 5, specifically, the first direction is vertical, and the second direction is a circular direction along a horizontal plane; or, for some acoustic devices, the sound emitting direction needs to be adjusted when the acoustic device is installed, so that the acoustic device emits sound according to a certain designated direction, and a user obtains better hearing feeling. Then, the fitting 5 may be rotationally adjusted to adjust the sound emitting direction of the acoustic device in a similar manner to the projector as described above.

Because the second direction is the circular direction, the electric connection female end 3 and the electric connection male end 4 are of a matching structure capable of relatively rotating along the second direction, specifically, the electric connection male end 4 is provided with a circular conductive part concentric with the second direction, the electric connection female end 3 is provided with a conductive elastic sheet abutted with the wall surface of the circular conductive part, and when the electric connection male end 4 relatively rotates along the second direction, the conductive elastic sheet strokes along the wall surface of the circular conductive part, so that a stable electric connection state is always maintained, and the power supply is ensured to be stable; more specifically, set up annular slot on the female end 3 of electric connection in order to cooperate with the annular conductive part on the male end 4 of electric connection, set up the conductive shell fragment in annular slot, conductive shell fragment and the wall elasticity butt of annular conductive part are in order to ensure electric connection stability, the conductive shell fragment can only set up one in annular slot, also can set up a plurality of along circumference interval in annular slot, further improves electric connection stability. The utility model discloses a power connection male terminal 4, specifically including live wire conductive part and zero line conductive part, live wire conductive part and zero line conductive part set to concentric ring structure, also be provided with live wire slot and zero line slot on the female terminal 3 of electric connection correspondence, live wire slot and zero line slot constitute concentric ring groove structure, be provided with the electrically conductive shell fragment of live wire in the live wire slot, set up the electrically conductive shell fragment of zero line in the zero line slot, thereby realize simultaneously that live wire conductive part is connected with the electrically conductive shell fragment of live wire electricity and zero line conductive part is connected with the electrically conductive shell fragment of zero line electricity when the female terminal 3 of electric connection and the 4 butt joint of electric connection male terminal, and simple structure, compactness, occupation space is little, the wiring is convenient, swiftly, and can relative rotation between female terminal 3 of electric connection and the electrically connected male terminal 4, thereby can adjust the orientation of waiting to adorn accessory 5 and keep stable power supply.

In this embodiment, the hanging plate 1 and the hook 2 adopt sheet metal parts, the structure is simplified, the strength is high, the requirement of high bearing capacity can be met, the hanging plate 1 is in a disc-shaped structure, a mounting hole for connecting with a ceiling and an assembly hole for fixing an electric connection female end 3 are formed in the hanging plate 1, the peripheral edge of the hanging plate 1 is flanging processed to form the clamping part 11, specifically, the peripheral edge of the hanging plate 1 is flanging processed to the radial inner side, the clamping part 11 is L-shaped flanging, the structure is simple, the strength is high, the occupied space is small, three sections are specifically arranged at intervals in the circumferential direction of the clamping part 11, gaps without flanging structures are formed between adjacent clamping parts 11, so that the hook 2 passes through the gaps to enter and exit the clamping part 11, each clamping part 11 covers one section of arc section along the second direction, in this embodiment, the angle range of each clamping part 11 covers 50-60 ° of arc section, that is, the hook 2 can realize flexible rotation in the circumferential direction of 5-60 ° when moving along the second direction on the clamping part 11, and the requirement can be flexibly adjusted in each direction; the couple 2 is L shape, simple structure, intensity are high, and occupation space is little, couple 2 also is provided with three corresponding joint portion 11, and this three couple 2 is along second direction interval distribution to this three couple 2 are connected as an organic wholely and are formed through a sheet metal component processing, further improve structural strength, can improve bearing capacity, satisfy the demand of high load.

The limiting parts 12 at two ends of the clamping part 11 along the second direction are folded edges formed by sheet metal machining, the processing is convenient, the structural stability is good, an effective limiting effect is achieved on the hook 2, the hook 2 is prevented from falling out of the clamping part 11, the stable matching relationship between the hook 2 and the clamping part 11 is ensured, namely the stable connection between the hanging plate 1 and the hook 2 is ensured, and the dangerous condition that the to-be-assembled fitting 5 is loosened and falls is avoided. Further, at least one of the limiting portions 12 at two ends of the clamping portion 11 is provided with an opening 13 for the hook 2 to enter and exit the clamping portion 11, in other words, the position of the opening 13 is higher than that of the clamping portion 11, in other words, a space is reserved between the opening 13 and the clamping portion 11 along the first direction, so that if the hook 2 exits the clamping portion 11, the to-be-assembled part 5 needs to be lifted up integrally to enable the hook 2 to reach the position of the opening 13, then the hook 2 and the hanging plate 1 can be separated after rotation, in a natural state after assembly is completed, the hook 2 always abuts against the clamping portion 11 due to gravity, and then the hook 2 cannot exit the clamping portion 11 only when the to-be-assembled part 5 is rotated, the hook 2 can be limited effectively by the limiting portion 12, and therefore connection stability is guaranteed, and a dangerous condition that the to-be-assembled part 5 falls off can not occur;

the opening is not required to be arranged at the limiting part, for example, the hook is of an elastic structure (the hook has elasticity or is driven by an elastic piece), and is directly clamped on the limiting part through the elastic movement of the hook, so that the opening for the hook to enter and exit the clamping part is not required to be arranged; the hook 2 of this embodiment adopts a rigid structure, has good structural stability and strong bearing capacity, can bear heavier fittings to be assembled, and has higher use reliability and safety, so that the mode of arranging the opening 13 for the hook 2 to enter and exit the clamping part 11 is adopted.

The hanging plate 1 is provided with an indication arrow of the installation direction, when the hanging plate 1 is installed on a ceiling, the indication arrow faces the direction where the projection curtain is located, so that the condition that the lens of the projector is opposite to the projection curtain when the hook 2 moves along the second direction on the clamping part 11 is ensured, the adjustment range is limited, the projector cannot rotate at 360 degrees at will, and if the hanging plate 1 is not installed correctly, the condition that the lens of the projector is opposite to the projection curtain can occur when the adjustment is not carried out anyway.

In this embodiment, the hanging plate 1 is further provided with a guiding portion 61, the fitting 5 to be assembled is provided with a matching portion 62, the guiding portion 61 and the matching portion 62 are matched in a guiding manner along a first direction, the matching between the guiding portion 61 and the matching portion 62 enables the electric connection female end 3 and the electric connection male end 4 to be plugged more accurately and conveniently, the situation that the electric connection female end and the electric connection male end are difficult to align to affect the installation efficiency is avoided, in particular, the guiding portion 61 is of a protruding structure, the matching portion 62 is of a groove structure, the groove structure has an inclination angle, the wide bottom of the opening is narrow to play a guiding and positioning role, and since the fitting to be assembled has an adjusting degree of freedom in a second direction relative to the hanging plate, and the second direction is in a circular direction, the guiding portion 61 and the matching portion 62 need to rotate relatively along the second direction, the matching portion 62 has a circular groove, the guiding portion 61 is a cylindrical protrusion or a cylindrical protruding part, the guiding portion 61 and the matching portion 62 need to be relatively rotated to play a role of positioning and guiding, and the guiding portion 61 and the electric connection male end 4 need to be inserted into the electric connection female end 3 and the electric connection male end 4 when the fitting portion 62 is installed.

The hanging disc 1 is also connected with a wire harness cover 7, the wire harness cover 7 is used for covering an external cable connected to the electric connection female end 3, plays a role in protecting the external cable, ensures that the external cable cannot be scratched when the to-be-assembled part is rotated, and ensures the safety and reliability of power supply.

Further, the hanging plate 1 is further connected with an alignment member 8, the alignment member 8 cooperates with the peripheral edge of the fitting 5 to be assembled to perform positioning, so as to realize visual alignment installation, avoid repeated debugging due to blind operation, improve installation efficiency, the alignment member 8 mainly plays a role in aligning the electric connection female end 3 with the electric connection male end 4, when the peripheral edge of the fitting 5 to be assembled reaches a matched state with the alignment member 8, the electric connection female end 3 can be inserted with the electric connection male end 4 only by pushing the fitting 5 upwards, specifically, the alignment member 8 is provided with a first positioning part 81 positioned at the outer side of the fitting 5, the peripheral edge of the fitting 5 to be assembled is abutted against the first positioning part 81 to perform positioning, the projector is specifically a projector, the whole body is in a round cake shape, the peripheral edge of the projector is in an arc shape, and further the first positioning part 81 is in an arc shape, and the fact that the peripheral edge of the projector is abutted against the radial inner side of the first positioning part 81 represents that the electric connection female end 3 is aligned with the electric connection male end 4;

the alignment member 8 is further provided with a second positioning portion 82 for positioning in a second direction, after the electric connection female end 3 and the electric connection male end 4 are aligned, the position of the hook 2 relative to the hanging disc 1 still needs to be adjusted, otherwise, the hook 2 cannot enter the clamping portion 11, and the second positioning portion 82 is used for positioning the assembly member 5 in the circumferential direction, so that the hook 2 on the assembly member 5 is just positioned at a notch between adjacent clamping portions 11, and then the assembly member 5 is pushed upwards and then rotated, so that the hook 2 enters the clamping portion 11 to realize reliable connection. The second positioning portion 82 may be a structure such as a protrusion or a notch, or may be a mark or a scale.

The projector is formed by installing the ceiling mounting structure, is convenient to assemble and disassemble and efficient, is flexible to adjust, is good in power supply stability, and ensures stable projection work.

Example two

The difference from the first embodiment is that the electrical connection female end 3 is movably connected to the hanging plate 1, and the moving direction is parallel to the second direction; alternatively, the male electrical connection end 4 is movably connected to the fitting 5 to be assembled, and the moving direction is parallel to the second direction.

Specifically, the second direction may be a straight direction along the horizontal plane, and the electric connection female end 3 is in a straight sliding connection on the hanging plate 1, and a sliding rail or a sliding groove for the electric connection female end 3 to slide in a straight line is arranged on the hanging plate 1; or, the electric connection male end 4 is in linear sliding connection with the fitting 5 to be assembled, and a sliding rail or a sliding groove for the power supply connection male end 4 to slide linearly is arranged on the fitting 5 to be assembled;

the second direction can also be along the circular direction of the horizontal plane, then the female end 3 of electric connection is rotationally connected on the hanging plate 1 or the male end 4 of electric connection is rotationally connected on the fitting 5 to be assembled, specifically, the female end 3 of electric connection can be rotationally connected on the hanging plate 1 through a bearing, smooth rotation is ensured, a chute with a circular path can also be arranged on the hanging plate 1, the female end 3 of electric connection slides along the chute to rotate relative to the hanging plate 1, the direction of the fitting 5 to be assembled can be flexibly adjusted in the same way, and meanwhile, stable connection between the female end of electric connection and the male end of electric connection can be ensured all the time without separation.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that the above-mentioned preferred embodiment should not be construed as limiting the invention, and the scope of the invention should be defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.

Claims

1. The utility model provides a ceiling mounting structure, its characterized in that, including hanging dish (1), couple (2), electricity connect female end (3) and electricity and connect public end (4), electricity connects female end (3) and sets up on hanging dish (1), couple (2) and electricity are connected public end (4) and are being waited to adorn accessory (5), electricity is connected female end (3) and is connected public end (4) along first direction plug connection, be provided with on hanging dish (1) with couple (2) matched with joint portion (11), joint portion (11) have and supply couple (2) to follow the activity region of second direction activity in order to adjust wait to adorn accessory (5), be provided with spacing portion (12) respectively at the both ends of joint portion (11) along the second direction, second direction perpendicular to first direction, when couple (2) are along the activity in joint portion (11), electricity is connected female end (3) and electricity and is connected public end (4) and keeps stably to be connected.

2. A roof mounting structure according to claim 1, wherein the female end (3) of the electrical connection is movably connected to the hanging plate (1) and the moving direction is parallel to the second direction;

or the electric connection male end (4) is movably connected to the fitting (5) to be assembled, and the moving direction is parallel to the second direction;

or the electric connection female end (3) and the electric connection male end (4) can relatively move in the second direction and keep electric connection.

3. The ceiling mounting structure according to claim 1, wherein the second direction is a circular direction, and at least one of the electrical connection female end (3) and the electrical connection male end (4) is provided with a circular conductive portion concentric with the second direction.

4. A roof mounting structure according to claim 3, wherein the engaging portion (11) is an L-shaped flange, and the hanger (2) is L-shaped.

5. The ceiling mounting structure according to claim 1, wherein at least one of the limiting portions (12) at two ends of the clamping portion (11) along the second direction is provided with an opening (13) for the hook (2) to enter and exit the clamping portion (11), and a space along the first direction is provided between the opening (13) and the clamping portion (11).

6. The ceiling mounting structure according to any one of claims 1 to 5, wherein a guide portion (61) is provided on the hanging plate (1), a fitting portion (62) is provided on the fitting (5), and the guide portion (61) is fitted with the fitting portion (62) in a first direction.

7. A ceiling mounting structure according to any one of claims 1 to 5, wherein a harness cover (7) is further connected to the hanging plate (1), the harness cover (7) being adapted to cover an external cable connected to the female electrical connection end (3).

8. A roof mount according to any one of claims 1 to 5, wherein the hanging plate (1) is further connected with a positioning member (8), and the positioning member (8) cooperates with the peripheral edge of the fitting (5) to be mounted for positioning.

9. The ceiling mounting structure according to claim 8, wherein the alignment member (8) is further provided with a second positioning portion (82) for positioning in the second direction.

10. A roof mounting structure according to claim 8, wherein the alignment member (8) is provided with a first positioning portion (81) located outside the fitting (5), and the peripheral edge of the fitting (5) is abutted against the first positioning portion (81) for positioning.

11. A projector comprising the ceiling mounting structure of any one of claims 1 to 10.