Fixing device and ceiling-mounted apparatus

Abstract

A fixing device (1), comprising fasteners (20), each fastener (20) comprising a hanging lug (200) and a screw (210), the hanging lug (200) being provided with a first portion (201) and a second portion (202), the screw (210) being provided with a threaded part (211) and an unthreaded part (212), the threaded part (211) of the screw (210) being connected to the first portion (201) of the hanging lug (200), and the first portion (201) of the hanging lug (200) driving the second portion (202) to move in the axial direction of the screw (210), such that the second portion (202) abuts against a suspended ceiling; and through hole parts (120), the resistance encountered when the threaded parts (211) of the screws (210) pass through the through hole parts (120) being greater than the resistance encountered when the unthreaded parts (212) of the screws (210) pass through the through hole parts (120). A ceiling-mounted apparatus, comprising an apparatus to be mounted and the fixing device (1). By means of this arrangement, when the fixing device is mounted and dismounted, the screws will not separate from or fall off the hanging lugs, and parts in the fixing device will not be damaged.

Description

Fixtures and ceiling-mounted equipment

[0001] This application claims priority to Chinese Patent Application No. 202421396810.9, filed on June 18, 2024, entitled "Fixing Device and Ceiling Mounting Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of smart homes, and more specifically, to a fixing device and a ceiling-mounted device. Background Technology

[0003] With the development of smart home technology, more and more ceiling-mounted devices, such as smart lights, sensors, and speakers, are being widely installed on ceilings in homes and public spaces. Typically, these devices use a fixing mechanism consisting of mounting ears and screws. The mounting ears are evenly distributed around the device; turning the screws moves the mounting ears up and down, causing them to descend and clamp the device to the ceiling. However, this fixing mechanism is prone to problems during installation and removal. Blind disassembly can easily cause the screws to separate from the mounting ears, leading to the screws falling from a height in the ceiling. This results in low installation efficiency and poses safety risks such as damaging the floor and injuring people. Summary of the Invention

[0004] This application provides a fixing device and a ceiling-mounted device, wherein during the installation and disassembly of the fixing device, the screw will not separate from or fall off the hanging lug, nor will it cause damage to the components in the fixing device.

[0005] In a first aspect, a fixing device is provided for installing a ceiling-mounted device. The fixing device includes: a fastener, which includes a lug and a screw. The lug has a first part and a second part, and the screw has a threaded part and a smooth part. The threaded part of the screw is connected to the first part of the lug, and the first part of the lug drives the second part to move along the axial direction of the screw, so that the second part abuts against the ceiling. A through-hole is provided, wherein the resistance of the threaded part of the screw passing through the through-hole is greater than the resistance of the smooth part of the screw passing through the through-hole.

[0006] Based on the above technical solution, the screw will not fall out of the through hole during the tightening process of installation or the loosening process of disassembly, and the screw will not cause damage to the lug or other components in the fixing device when it is in the free-spinning state in the through hole.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, after the threaded portion of the screw disengages from the engaging portion of the first part of the lug, the threaded portion of the screw does not engage with the through hole portion.

[0008] In conjunction with the first aspect, in certain implementations of the first aspect, during a period of time when the threaded portion of the screw disengages from the engaging portion of the first part of the lug and moves towards the through-hole, the smooth portion of the screw does not enter the engaging portion of the through-hole. This period of time can refer to a continuous time after the threaded portion disengages from the engaging portion of the first part of the lug, after which the threaded portion of the screw can engage with the through-hole.

[0009] Based on the above technical solution, after the threaded part of the screw disengages from the first part of the lug, since neither the threaded part nor the smooth part will engage with the through hole, the screw will spin freely at this point and will not damage other components in the fixing device.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the diameter of the through hole is larger than the diameter of the smooth rod portion of the screw and smaller than the width of the widest part of the cross-section of the threaded portion of the screw.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the fixing device is further provided with a receiving groove in which the fastener is received.

[0012] Based on the above technical solution, the fasteners can be prevented from being bumped by external objects, thus improving the reliability of the fixing device. On the other hand, it makes the overall structure of the fixing device more aesthetically pleasing and less obtrusive.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, a fixing seat is further provided on the outer periphery of the fixing device near the ceiling, and the fixing seat cooperates with the second part of the hanging ear to clamp the ceiling.

[0014] Based on the above technical solution, the second part of the hanging ear cooperates with the fixing seat to clamp the ceiling in the middle. After the screw is tightened, the second part of the hanging ear and the fixing seat can fix the ceiling in the middle, improving the stability of the fixing device during installation.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the through hole portion is disposed on the fixed base.

[0016] In some possible implementations, the mounting base and the through hole are connected by welding, bonding or riveting.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, the fixing device is further provided with a top cover located on the side of the fixing device away from the ceiling.

[0018] In conjunction with the first aspect, in some implementations of the first aspect, when the second part of the hanging ear moves axially close to the top cover, the top cover abuts against the side of the second part away from the ceiling.

[0019] Based on the above technical solution, when the top cover and the second part of the hanging ear are in contact on the side away from the ceiling, and the screw is continued to be loosened, the top cover can restrict the axial movement direction of the hanging ear, so that the threaded part of the screw is disengaged from the engagement part of the first part of the hanging ear.

[0020] In conjunction with the first aspect, in some implementations of the first aspect, the receiving groove includes a first groove, a second groove, and a third groove, the first groove being used to receive a second portion of the hook, the first portion of the hook moving in the second groove, and the screw moving in the third groove.

[0021] Based on the above technical solution, when no fixing device is needed, the ear can be prevented from being bumped by external objects, thus improving the reliability of the fixing device. On the other hand, it makes the overall structure of the fixing device more aesthetically pleasing and less obtrusive.

[0022] In conjunction with the first aspect, in some implementations of the first aspect, the receiving groove is further provided with a first wall, which is disposed between the first groove and the third groove; when the lug moves along the axial direction of the screw past the first wall, it moves into the first groove.

[0023] Based on the above technical solution, when the fixing device is disassembled, the hanging ear can move along the first wall towards the top cover, and when the hanging ear moves past the first wall, it will rotate into the first groove as the screw is loosened, so as to achieve the storage effect of the hanging ear when the fixing device is not installed.

[0024] In conjunction with the first aspect, in some implementations of the first aspect, the receiving groove is further provided with a second wall, which is located on the side of the second groove and the third groove away from the first groove; the hanging ear moves axially along the second wall in the second groove or the third groove.

[0025] Based on the above technical solution, the second wall can limit the rotation angle of the second part of the hanging ear when it moves out of the first groove, so as to avoid the second part rotating out at too large an angle, which would lead to a poor fixing effect of the fixing device. On the other hand, the second wall can also restrict the hanging ear to move axially in the second and third grooves, so as to realize the disassembly and installation of the fixing device.

[0026] In conjunction with the first aspect, in some implementations of the first aspect, the second part of the hanging ear has an anti-slip portion on the surface facing the ceiling, the anti-slip portion including multiple grooves.

[0027] Based on the above technical solution, multiple grooves can increase the friction between the second part of the hanging ear and the ceiling surface, making the installation of the fixing device more stable.

[0028] In conjunction with the first aspect, in some implementations of the first aspect, the anti-slip part is further provided with cushioning material.

[0029] In some possible implementations, the cushioning material can be an elastic material such as foam, rubber, or soft rubber.

[0030] Based on the above technical solution, the cushioning material is not easy to slide on the surface of the ceiling, thus achieving an anti-slip effect. Furthermore, due to the elasticity of the cushioning material, when the second part of the hanging ear comes into contact with the ceiling, the second part is not likely to cause damage to the surface of the ceiling, thus playing a protective role for the ceiling.

[0031] In a second aspect, a ceiling-mounted device is provided, the ceiling-mounted device comprising a fixing device as described in the first aspect and any implementation thereof, and a device to be installed, the fixing device being used to install the device to be installed.

[0032] Thirdly, a ceiling-mounted device is provided, the ceiling-mounted device including a fixing device as described in the first aspect and any implementation thereof, the fixing device being used to mount the ceiling-mounted device. Attached Figure Description

[0033] Figure 1 is a structural diagram of a fixing device provided in an embodiment of this application.

[0034] Figure 2 is an exploded structural diagram of a fixing device provided in an embodiment of this application.

[0035] Figure 3 is a schematic diagram of the fixing device provided in the embodiments of this application in different states during installation or disassembly.

[0036] Figure 4 is a partial cross-sectional view of the fixing device provided in an embodiment of this application. Detailed Implementation

[0037] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0038] The embodiments of this application are described in detail below, and examples of these embodiments are illustrated in the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0039] In the description of this application, it should be understood that the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. In the description of this application, it should be understood that the terms “center,” “longitudinal,” “lateral,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] With the development of smart home technology, more and more ceiling-mounted devices, such as smart lights, sensors, and speakers, are being widely installed on ceilings in homes and public spaces. Typically, these devices use a fixing mechanism consisting of mounting ears and screws. The mounting ears are evenly distributed around the device; turning the screws moves the mounting ears up and down, causing them to descend and clamp the device to the ceiling. However, this fixing mechanism is prone to problems during installation and removal. Blind disassembly can easily cause the screws to separate from the mounting ears, leading to the screws falling from a height in the ceiling. This results in low installation efficiency and poses safety risks such as damaging the floor and injuring people.

[0043] To improve the installation efficiency and safety of mounting devices for ceiling-mounted appliances, existing technologies use methods such as adding a nut or snap ring to the top of the screw to limit axial movement and prevent the screw from separating from the mounting lug during assembly and disassembly. However, this method has disadvantages such as complex structure, poor reliability, easy damage to the nut or lug, and increased cost due to the space occupied by the ceiling. Therefore, a mounting device that is easy to install and disassemble is needed.

[0044] To address the aforementioned issues, this application provides a fixing device based on a non-detachable screw structure. This device can prevent the screw from falling off while simultaneously installing ceiling-mounted equipment at a low cost, protect the mounting ears, and improve installation efficiency and equipment reliability.

[0045] The principle of a non-detachable screw is mainly based on the interaction between its unique structure and the connected part to achieve the effect of preventing it from falling off. Typically, one part of the non-detachable screw has threads, and the other part is a smooth part without threads. The diameter of the smooth part is smaller than the diameter of the threaded part. The screw is hung on the connector, such as a ferrule or a snap ring, through the small-diameter smooth part. This prevents the screw from falling off the connector even when it is not tightened, thus achieving the function of preventing it from falling off.

[0046] Figure 1 is a structural diagram of a fixing device provided in an embodiment of this application.

[0047] Figure 2 is an exploded structural diagram of a fixing device provided in an embodiment of this application.

[0048] Referring to Figures 1 and 2, the fixing device 1 is used to install the ceiling-mounted device to the ceiling. The fixing device 1 includes: a fastener 20, which is accommodated in the receiving groove 11. The fastener 20 includes a lug 200 and a screw 210. The lug 200 is provided with a first part 201 and a second part 202. The screw 210 is provided with a threaded part 211 and a smooth part 212. The threaded part 211 of the screw 210 is connected to the first part 201 of the lug 200. The first part 201 of the lug 200 drives the second part 202 of the lug 200 to move along the axial direction of the screw 210, so that the second part 202 of the lug 200 abuts against the ceiling. A through hole 120, the resistance of the threaded part 211 of the screw 210 when passing through the through hole 120 is greater than the resistance of the smooth part 212 of the screw 210 when passing through the through hole 120.

[0049] It should be noted that the engaging part of the first part 201 of the hanging ear 200 refers to the part in the first part 201 that can engage with the threaded part 211 of the screw 210, and can be set on the side of the first part 201 away from the ceiling. The second part 202 of the hanging ear 200 can be called the pressing part.

[0050] In some possible implementations, the smooth rod portion 212 of the screw 210 can pass through the through hole portion 120 in a non-contact or frictionless manner. In this case, the smooth rod portion 212 can be regarded as passing through the through hole portion 120 without resistance.

[0051] In some possible implementations, the smooth portion 212 of the screw 210 may partially contact the through hole portion 120. There is a certain frictional resistance between the smooth portion 212 of the screw 210 and the through hole portion 120. However, this resistance can be overcome by the weight of the screw 210 itself, or only a slight external force needs to be applied to allow the smooth portion 212 of the screw 210 to pass through the through hole portion 120. When the threaded portion 211 of the screw 210 passes through the through hole portion 120, it needs to be tightened or loosened with the aid of a locking tool. Therefore, the resistance of the threaded portion 211 of the screw 210 when passing through the through hole portion 120 is greater than the resistance of the smooth portion 212 of the screw 210 when passing through the through hole portion 120.

[0052] In some possible implementations, the diameter of the smooth portion 212 of the screw 210 is smaller than the width of the widest part of the threaded portion 211 of the screw 210, and the diameter of the through hole 120 is larger than the diameter of the smooth portion 212 of the screw 210 and smaller than the width of the widest part of the threaded portion 211 of the screw 210. Therefore, the smooth portion 212 of the screw 210 can pass through the through hole 120 without resistance or with slight resistance when no external force is required, while the threaded portion 211 of the screw 210 requires external force to pass through the through hole 120. For example, when the screw 210 is tightened or loosened using a locking tool, the threaded portion 211 of the screw 210 can pass through the through hole 120. Without external force, the threaded portion 211 of the screw 210 cannot pass through the through hole 120.

[0053] Since the first part 201 of the lug 200 is connected to the second part 202, the first part 201 of the lug 200 can drive the second part 202 to move. The smooth part 212 of the screw 210 refers to the smooth part of the screw 210 that is not threaded.

[0054] In some possible implementations, the fixing device 1 may also include a housing 10, the interior of which can be used to place the equipment to be installed on the ceiling, thereby installing the equipment to be installed on the ceiling through the fixing device 1. The ceiling may also be a structure such as a ceiling, and the equipment to be installed may be a smart light fixture, various sensors or speakers, etc. The embodiments of this application do not limit the type of equipment to be installed.

[0055] In some possible implementations, the fixing device 1 may also be provided with a receiving groove 11, in which the fastener 20 is received. The receiving groove 11 may be a structure provided on the outer periphery of the housing 10, or it may be a structure provided separately on the fixing device 1 from the housing 10.

[0056] In some possible implementations, a fixing seat 12 is also provided on the outer periphery of the fixing device 1 near the ceiling. The fixing seat 12 may be a part extending along the outer periphery of the fixing device 1. The fixing seat 12 and the second part 202 of the hanging ear 200 can cooperate to clamp the ceiling. The through hole 120 may be provided on the fixing seat 12. The fixing seat 12 may be a flange.

[0057] In some possible implementations, the fixing seat 12 and the through hole portion 120 are integrally formed, or the fixing seat 12 can be connected to the through hole portion 120 by means of welding, bonding or riveting.

[0058] Understandably, the threaded portion 211 of the screw 210 can engage with the through hole portion 120. After the lug 200 is accommodated in the receiving groove 11, the screw 210 can be installed. Under the tightening action of the locking tool, the threaded portion 211 of the screw 210 enters the receiving groove 11 through the through hole portion 120 and moves towards the first part 201 of the lug 200. When the threaded portion 211 of the screw 210 just contacts the first part 201 of the lug 200, the threaded portion 211 of the screw 210 does not engage with the through hole portion 120. That is to say, at this time, the threaded portion 211 of the screw 210 will not engage with the through hole portion 120. Under the tightening action of the locking tool, the screw 210 is in a free-spinning state when it rotates at this time, and the screw 210 will not continue to move axially.

[0059] The engaging portion of the through hole portion 120 refers to the part of the through hole portion 120 that can engage with the threaded portion 211 of the screw 210, for example, it can be a through hole.

[0060] The receiving groove 11 can be used to receive or store the fastener 20, and can also serve as an axial limit when the fastener 20 moves.

[0061] When the screw 210 is tightened by the fastening tool, the first part 201 of the lug 200 engages with the threaded part 211 of the screw 210, and the smooth part 212 of the screw 210 does not enter the engaging part of the through hole 120. The smooth part 212 will not engage with the through hole 120, so the screw 210 will not fall out of the through hole 120 during the tightening process. This causes the first part 201 of the lug 200 to move closer to the ceiling along the axial direction of the screw 210. The second part 202 of the lug 200 moves together with the first part 201. When the second part 202 of the lug 200 moves to contact the ceiling, the screw 210 is tightened further, so that the second part 202 of the lug 200 presses the ceiling tightly, thereby realizing the installation of the fixing device 1.

[0062] When it is necessary to remove the fixing device 1 from the ceiling, the screw 210 can be loosened. At this time, the first part 201 of the lug 200 and the threaded part 211 of the screw 210 are in an engaged connection. When the screw 210 is loosened, the threaded part 211 of the screw 210 will disengage from the engaged part of the first part 201 of the lug 200. After the threaded part 211 of the screw 210 disengages from the first part 201 of the lug 200, the threaded part 211 of the screw 210 will not engage with the through hole 120. During the period when the threaded part 211 of the screw 210 disengages from the engaged part of the first part 201 of the lug 200 and moves towards the through hole 120, the threaded part 211 of the screw 210 does not engage with the through hole 120. This period of time can refer to a continuous period of time after the threaded portion 211 disengages from the engaging portion of the first part 201 of the lug 200. During this period, the screw 210 will remain in an idle state. After this continuous period of time, the threaded portion 211 of the screw 210 can engage with the through hole portion 120. The first part 201 of the lug 200 moves away from the ceiling along the axial direction of the screw 210. The second part 202 of the lug 200 moves together with the first part 201, thereby causing the second part 202 of the lug 200 to leave the ceiling. At this time, the fixing device 1 is no longer in contact with the ceiling, and the fixing device 1 can be removed from the ceiling.

[0063] Based on the above technical solution, the screw 210 will not fall out of the through hole 120 during the tightening process of installation or the loosening process of disassembly, and since the screw 210 is in an idle state, it will not damage the lug 200 or other components in the fixing device 1.

[0064] In some possible implementations, the length of the smooth portion 212 of the screw 210 is less than the length of the first portion 201 of the lug 200 in the axial direction.

[0065] When the lug 200 moves along the axial direction of the screw 210, the threaded portion 211 of the screw 210 needs to always engage with the meshing portion of the first part 201 of the lug 200 in order to drive the lug 200 to move axially upward or downward. When the lug 200 moves along the screw 210 towards the ceiling, the lug 200 gradually approaches the smooth portion 212 of the screw 210. If the smooth portion 212 is too long, then before the second part 202 of the lug 200 comes into contact with the ceiling, the first part 201 of the lug 200 has already disengaged from the threaded portion 211 and slid into the smooth portion 212 of the screw 210. The rod 212 will not engage with the first part 201 of the lug 200. Therefore, the lug 200 will slide along the smooth rod 212 to the bottom under the action of gravity, thus making it impossible to install the fixing device 1. Therefore, when the length of the smooth rod 212 of the screw 210 is less than the axial length of the first part 201 of the lug 200, it can be ensured that when the lug 200 moves up or down along the axial direction of the screw 210, a portion of the threaded part 211 of the screw 210 is always engaged with the first part 201 of the lug 200, so that the lug 200 will not fall off the screw 210.

[0066] In some possible implementations, the outer periphery of the fixing device 1 is also provided with an extended fixing seat 12, which cooperates with the second part 202 of the hanging ear 200 to clamp the ceiling.

[0067] Figure 3 shows a schematic diagram of the fixing device in different states during installation or disassembly.

[0068] As shown in Figure 3(c), when the second part 202 of the hanging ear 200 moves to contact the ceiling 4, and the screw 210 is tightened further, the fixing seat 12 will cooperate with the second part 202 of the hanging ear 200 to clamp the ceiling 4, thereby making the installation of the fixing device 1 on the ceiling 4 more stable.

[0069] In some possible implementations, the installation of the fixing device 1 can be completed after the second part 202 of the hanging ear 200 abuts against the ceiling 4, and the fixing seat 12 does not need to contact the ceiling 4.

[0070] In some possible implementations, the fixing device 1 is also provided with a top cover 30 located on the side of the fixing device 1 away from the ceiling 4.

[0071] Referring to Figures 1, 2, and 3, when the fixing device 1 is disassembled, the lug 200 will come into contact with the top cover 30 as it moves toward the top cover 30. The top cover 30 will act as an axial limit for the lug 200. Since the first part 201 of the lug 200 is engaged with the threaded part 211 of the screw 210, if the screw 210 is loosened further, it will retract under the axial limit of the top cover 30. After the threaded part 211 of the screw 210 disengages from the first part 201 of the lug 200, the threaded part 211 of the screw 210 will not engage with the through hole 120. During the period when the screw 210 retracts from the engaging part of the first part 201 of the lug 200 and moves toward the through hole 120, the threaded part 211 of the screw 210 will not engage with the through hole 120. Therefore, the screw 210 will spin freely at this time and will not fall out of the through hole 120.

[0072] In some possible implementations, the receiving groove 11 includes a first groove 110, a second groove 111, and a third groove 112. The first groove 110 is used to receive the second part 202 of the hook 200. The first part 201 of the hook 200 moves in the second groove 111 or the third groove 112. The screw 210 is received in the third groove 112.

[0073] Among them, the first groove 110 can also be called the storage groove, the second groove 111 can also be called the first sliding groove, and the third groove 112 can also be called the second sliding groove.

[0074] Referring to Figures 1 and 2, when not installed, the second part 202 of the lug 200 is accommodated in the first groove 110, the first part 201 is located in the second groove 111, and can move in the second groove 111 or the third groove 112 along the axial direction of the screw 210. The screw 210 is accommodated in the third groove 112 and can move in the axial direction in the third groove 112.

[0075] Understandably, the threaded portion 211 of the screw 210 can engage with the meshing portion of the through hole portion 120. After the lug 200 is accommodated in the receiving groove 11, the screw 210 can be installed. The threaded portion 211 of the screw 210 enters the third groove 112 through the through hole portion 120 and moves towards the first part 201 of the lug 200. When the threaded portion 211 of the screw 210 just contacts the meshing portion of the first part 201 of the lug 200, the smooth portion 212 of the screw 210 is not engaged with the through hole portion 120, and the screw 210 is in an idle state when it rotates at this time.

[0076] It is understandable that, as the threaded portion 211 of the screw 210 drives the first part 201 of the lug 200 to move axially, a part of the screw 210 may also enter the second groove 111 during the tightening or loosening of the screw 210; during the installation of the fixing device 1, the lug 200 will move from the second groove 111 to the third groove 112.

[0077] In some possible implementations, the receiving groove 11 is further provided with a first wall 113, which is disposed between the first groove 110 and the third groove 112; when the second part 202 of the lug 200 moves along the axial direction of the screw 210 past the first wall 113, it moves into the first groove 110.

[0078] Referring to Figures 1, 2, and 3, when the fixing device 1 is disassembled, the lug 200 will move from the third groove 112 to the second groove 111. When the lug 200 moves upward along the screw 210 axis and passes the first wall 113, since the threaded part 211 of the screw 210 and the meshing part of the first part 201 of the lug 200 are still in a meshing connection state, when the screw 210 is loosened further, the lug 200 will rotate and move into the first groove 110.

[0079] In some possible implementations, the receiving groove 11 is further provided with a second wall 114, which is located on the side of the second groove 111 and the third groove 112 away from the first groove 110; the second part 202 of the hanging ear 200 moves axially in the second groove 111 or the third groove 112 along the second wall 114.

[0080] It should be noted that the first wall 113 can also be called the first limiting wall, and the second wall 114 can also be called the second limiting wall.

[0081] Referring to Figures 1, 2, and 3, when installing the fixing device 1, when tightening the screw 210, the threaded portion 211 of the screw 210 engages with the meshing portion of the first part 201 of the lug 200, causing the second part 202 of the lug 200 to rotate out of the first groove 110. At this time, the second wall 114 can limit the second part 202 of the lug 200, preventing the second part 202 of the lug 200 from being rotated out at too large an angle. When the screw 210 is tightened further, the second part 202 of the lug 200 can move axially upward or downward along the second wall 114 in the second groove 111 or the third groove 112.

[0082] In some possible implementations, the second part 202 of the hanging ear 200 is provided with an anti-slip part 203 on the surface facing the ceiling 4.

[0083] As shown in Figure 2, the second part 202 of the hanging ear 200 is also provided with an anti-slip part 203 on the surface facing the ceiling. The anti-slip part 203 may include multiple grooves, which may be densely arranged. When the second part 202 of the hanging ear 200 moves axially to contact the ceiling surface, the multiple densely arranged grooves can increase the friction between the second part 202 and the ceiling, making the installation of the fixing device 1 more stable.

[0084] As shown in Figure 2, in some possible implementations, the anti-slip part 203 may include a cushioning material, which may be an elastic material such as foam, rubber, or soft rubber. When the second part 202 of the hanging ear 200 moves axially to contact the ceiling surface, the cushioning material is less likely to slide on the ceiling surface when the anti-slip part 203 contacts the ceiling surface, thus achieving an anti-slip effect. Furthermore, due to the elasticity of the cushioning material, when the second part 202 of the hanging ear 200 abuts against the ceiling, the second part 202 is less likely to damage the ceiling surface, thus providing protection for the ceiling.

[0085] The following describes a fixing device provided in an embodiment of this application with reference to Figures 1 and 2.

[0086] The fixing device 1 includes a housing 10, fasteners 20, and a top cover 30 located on the side of the fixing device 1 away from the ceiling. The housing 10 has a receiving groove 11 and a fixing seat 12. The fastener 20 is disposed in the receiving groove 11 of the housing 10. The fixing seat 12 is located on the outer periphery of the side of the housing 10 closest to the ceiling and has a through hole 120. The fastener 20 includes a lug 200 and a screw 210. The lug 200 has a first part 201 and a second part 202. The screw 210 has a threaded part 211 and a smooth part 210. 12. The screw 210 passes through the through hole 120. The threaded portion 211 of the screw 210 is connected to the engaging portion of the first part 201 of the lug 200. The smooth portion 212 of the screw 210 passes through the through hole 120. The first part 201 of the lug 200 drives the second part 202 to move along the axial direction of the screw 210. The top cover 30 abuts against the second part 202 of the lug 200. The resistance when the threaded portion 211 of the screw 210 passes through the through hole 120 is greater than the resistance when the smooth portion 212 of the screw 210 passes through the through hole 120.

[0087] Based on the above technical solution, when the screw 210 is loosened to disassemble the fixing device 1, after the threaded portion 211 of the screw 210 disengages from the first part 201 of the lug 200, the threaded portion 211 of the screw 210 will not engage with the through hole portion 120; for a period of time after the threaded portion 211 of the screw 210 disengages from the engaging portion of the first part 201 of the lug 200, the threaded portion 211 of the screw 210 does not engage with the through hole portion 120, and the screw 210 can only rotate freely at this time, and will not fall out of the through hole portion 120, and the screw 210 will not cause damage to the first part 201 of the lug 200.

[0088] Since the first part 201 of the lug 200 is connected to the second part 202, the first part 201 can drive the second part 202 to move. The smooth part 212 of the screw 210 refers to the smooth part of the screw 210 that is not threaded.

[0089] It is understandable that the length of the smooth part 212 of the screw 210 is less than the length of the first part 201 of the lug 200 in the axial direction.

[0090] When the lug 200 moves along the axial direction of the screw 210, the threaded portion 211 of the screw 210 needs to always engage with the meshing portion of the first part 201 of the lug 200 in order to drive the lug 200 to move axially upward or downward. When the lug 200 moves along the screw 210 towards the ceiling, the lug 200 gradually approaches the smooth portion 212 of the screw 210. If the smooth portion 212 is too long, then before the second part 202 of the lug 200 comes into contact with the ceiling, the first part 201 of the lug 200 has already disengaged from the threaded portion 211 and slid into the smooth portion 212 of the screw 210. The rod 212 will not engage with the first part 201 of the lug 200. Therefore, the lug 200 will slide along the smooth rod 212 to the bottom under the action of gravity, thus making it impossible to install the fixing device 1. Therefore, when the length of the smooth rod 212 of the screw 210 is less than the axial length of the first part 201 of the lug 200, it can be ensured that when the lug 200 moves up or down along the axial direction of the screw 210, a portion of the threaded part 211 of the screw 210 is always engaged with the first part 201 of the lug 200, so that the lug 200 will not fall off the screw 210.

[0091] As shown in Figures 1 and 2, the receiving groove 11 includes a first groove 110, a second groove 111, and a third groove 112. The first groove 110 is used to receive the second part 202 of the lug 200. The first part 201 of the lug 200 moves in the second groove 111 or the third groove 112. The screw 210 is received in the third groove 112 and can move in the axial direction in the third groove 112.

[0092] It is understandable that, as the threaded portion 211 of the screw 210 drives the first part 201 of the lug 200 to move axially, a part of the screw 210 may also enter the second groove 111 during the tightening or loosening of the screw 210; during the installation of the fixing device 1, the lug 200 will move from the second groove 111 to the third groove 112.

[0093] Understandably, the threaded portion 211 of the screw 210 can engage with the meshing portion of the through hole portion 120. After the lug 200 is accommodated in the receiving groove 11 of the housing 10, the screw 210 can be installed. The threaded portion 211 of the screw 210 enters the third groove 112 through the through hole portion 120 and moves towards the first part 201 of the lug 200. When the threaded portion 211 of the screw 210 just contacts the meshing portion of the first part 201 of the lug 200, the smooth portion 212 of the screw 210 will not engage with the through hole portion 120, and the screw 210 is in an idle state when it rotates at this point.

[0094] When the fixing device 1 has not been installed, the hanging ear 200 can be regarded as being in the initial storage state. The second part 202 of the hanging ear 200 is stored in the first slot 110, so that the fixing device 1 looks more integrated when it is not needed to be installed. It can also prevent the second part 202 of the hanging ear 200 from being bumped by external objects, making the overall structure of the fixing device 1 more beautiful and less obtrusive.

[0095] As shown in Figures 1 and 2, the receiving groove 11 is also provided with a first wall 113 and a second wall 114. The first wall 113 is located between the first groove 110 and the third groove 112, and the second wall 114 is located on the side of the third groove 112 away from the first groove 110.

[0096] When the second part 202 of the lug 200 moves along the axial direction of the screw 210 past the first wall 113, it moves into the first groove 110. The second wall 114 is used to limit the rotation angle of the lug 200 and make the lug 200 move axially. The second part 202 moves axially along the second wall 114 in the second groove 111 or the third groove 112.

[0097] As shown in Figure 2, the second part 202 of the hanging ear 200 is also provided with an anti-slip part 203 on the surface facing the ceiling. The anti-slip part 203 may include multiple grooves, which may be densely arranged. When the second part 202 of the hanging ear 200 moves axially to contact the ceiling surface, the multiple densely arranged grooves can increase the friction between the second part 202 and the ceiling, making the installation of the fixing device 1 more stable.

[0098] As shown in Figure 2, in some possible implementations, the anti-slip part 203 may include a cushioning material, which may be an elastic material such as foam, rubber, or soft rubber. When the second part 202 moves axially to contact the ceiling surface, the cushioning material is not easy to slide on the ceiling surface when the anti-slip part 203 contacts the ceiling surface, thus achieving an anti-slip effect. Furthermore, because the cushioning material is elastic, when the second part 202 abuts against the ceiling, the second part 202 is not easy to damage the ceiling surface, thus playing a protective role for the ceiling.

[0099] Figure 3 shows a schematic diagram of the fixing device in different states during installation or disassembly.

[0100] As shown in Figure 3(a), the fixing device 1 can be installed in the mounting hole 5 reserved in the ceiling 4.

[0101] Understandably, when the fixing device 1 has not yet been installed, the second part 202 of the hanging ear 200 is housed in the first slot 110.

[0102] When installing the fixing device 1 in the pre-drilled mounting holes 5 in the suspended ceiling 4, first place the fixing device 1 in the mounting holes 5, and simultaneously tighten the screw 210. As the screw 210 rotates, the second part 202 of the lug 200 unscrews from the first groove 110, as shown in Figure 3(b). After rotating until it contacts the second wall 114, stop rotating. At this time, continue rotating the screw 210. The threaded part 211 of the screw 210 engages with the meshing part of the first part 201 of the lug 200. Under the action of the second wall 114... The hanging ear 200 moves axially downward from the second groove 111 to the third groove 112 along the screw 210, and continues to move axially downward along the third groove 112. When the second part 202 of the hanging ear 200 moves axially downward to contact the ceiling 4, the ceiling 4 is clamped between the second part 202 of the hanging ear 200 and the fixing seat 12 of the fixing device 1, as shown in Figure 3(c). At this time, the screw 210 is tightened. After the screw 210 is tightened, the fixing device 1 can be installed in the ceiling 4.

[0103] As shown in Figure 3(d), when the fixing device 1 has been installed in the mounting hole 5 of the ceiling 4 and needs to be removed from the mounting hole 5 of the ceiling 4, the screw 210 can be loosened first. Under the action of the first wall 113, the hanging ear 200 moves upward axially along the third groove 112. At this time, the second part 202 of the hanging ear 200 and the fixing seat 12 of the fixing device 1 clamp the ceiling 4. As the hanging ear 200 moves upward axially, the second part 202 of the hanging ear 200 gradually moves away from the surface of the ceiling 4. Under the action of the first wall 113 and the second wall 114, the hanging ear 200 continues to move upward axially in the third groove 112. When the second part 202 of the hanging ear 200 is completely... When passing the first wall 113, the second part 202 will rotate into the first groove 110 as the screw 210 rotates. At this time, the lug 200 abuts against the top cover 30, and the top cover 30 plays an axial limiting role. When the screw 210 is loosened, the screw 210 retracts and moves axially downward in the third groove 112. When the threaded part 211 of the screw 210 disengages from the engaging part of the first part 201 of the lug 200 and moves towards the end of the through hole 120, the threaded part 211 of the screw 210 does not engage with the through hole 120. The screw 210 can only rotate freely at this time, so that the screw 210 will not fall out of the through hole 120 and will not damage the first part 201 of the lug 200.

[0104] Figure 4 is a partial cross-sectional view of the fixing device provided in an embodiment of this application.

[0105] The following, in conjunction with Figure 4, further explains the principle of screw anti-disengagement in the fixing device provided in this application embodiment. As shown in Figure 4, the fixing device 1 is in an uninstalled state. The uninstalled state can refer to the state where the second part 202 of the lug 200 is housed in the first groove 110 before the fixing device 1 is installed, or it can refer to the state where the second part 202 of the lug 200 just rotates into the first groove 110 as the screw 210 is loosened and rotated during the disassembly of the fixing device 1. When the threaded portion 211 of the screw 210 disengages from the first part 201 of the lug 200, the threaded portion 211 of the screw 210 will not engage with the through hole portion 120. During the period when the threaded portion 211 of the screw 210 disengages from the engaging portion of the first part 201 of the lug 200 and moves towards the through hole portion 120, the threaded portion 211 of the screw 210 does not engage with the through hole portion 120. The screw 210 will remain in an idle state at this time and will not fall off from the through hole 120.

[0106] In some possible implementations, d0 in Figure 4 represents the diameter of the through hole 120, d1 represents the diameter of the threaded portion 211 of the screw 210, and d2 represents the diameter of the smooth portion 212 of the screw 210, wherein d0 is less than d1 and greater than d2.

[0107] Under the action of the first wall 113 and the second wall 114, the hanging ear 200 moves axially upward along the screw 210 and in the second groove 111 and the third groove 112. When the hanging ear 200 passes the first wall 113, the second part 202 of the hanging ear 200 rotates into the first groove 110. At this time, the hanging ear 200 no longer interferes with the mounting hole 5, and the hanging ear 200 will not contact the ceiling 4. After the hanging ear 200 leaves the ceiling 4, the fixing device 1 can be removed from the ceiling 4.

[0108] It should be noted that when the lug 200 has returned to the first slot 110, if the screw 210 is further loosened, the top cover 30 will act as a limit in the axial direction, causing the screw 210 to retract and move downwards along the axial direction. The resistance of the threaded portion 211 of the screw 210 passing through the through hole 120 is greater than the resistance of the smooth portion 212 of the screw 210 passing through the through hole 120. After the threaded portion 211 of the screw 210 disengages from the first part 201 of the lug 200, it will not engage with the through hole 120. During the period when the threaded portion 211 of the screw 210 is withdrawn from the engaging portion of the first part 201 of the lug 200 and moves towards the through hole 120, it does not engage with the through hole 120. The screw 210 will only continue to rotate freely during this time, and therefore will not damage the first part 201 of the lug 200.

[0109] In some possible implementations, when the diameter of the through hole 120 of the fixing seat 12 is between the diameter of the smooth rod 212 and the diameter of the threaded part 211 of the screw 210, the lug 200 will not fall off even if the locking tool is removed.

[0110] Based on the above technical solution, by designing the diameter of the threaded portion 211, the diameter of the smooth portion 212, and the diameter of the through hole portion 120 of the screw 210, the screw 210 can be prevented from falling off during the installation or disassembly of the fixing device 1, and will not cause damage to the components of the fixing device 1.

[0111] This application also provides a ceiling-mounted device, which includes any of the fixing devices described in the above embodiments and a device to be installed. The fixing device is used to install the device to be installed onto the ceiling.

[0112] It is understood that the device to be installed can be a smart light fixture, a speaker, or a sensor, etc., and this application embodiment does not limit the type of device to be installed.

[0113] This application also provides a ceiling-mounted device, which includes any of the fixing devices described in the above embodiments. The fixing device is used to install the ceiling-mounted device onto the ceiling.

[0114] The ceiling-mounted device can be a smart light fixture, speaker, or sensor with a built-in fixing device. This application does not limit the type of ceiling-mounted device.

[0115] It is understood that in the fixing device provided in the embodiments of this application, the housing may include multiple fasteners and corresponding through holes.

[0116] In some possible implementations, the fixing device can be equipped with four sets of fasteners and through holes, thereby providing a more stable installation effect for the ceiling-mounted device.

[0117] A suspended ceiling can also refer to a structure such as a ceiling that allows for the installation or clamping of fixing devices.

[0118] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0119] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A fixing device (1), characterized in that, The fixing device (1) is used to install the ceiling-mounted device, and the fixing device (1) includes: Fastener (20), the fastener (20) includes a lug (200) and a screw (210), the lug (200) is provided with a first part (201) and a second part (202), the screw (210) is provided with a threaded part (211) and a smooth part (212); wherein, the threaded part (211) of the screw (210) is connected to the first part (201) of the lug (200), the first part (201) of the lug (200) drives the second part (202) to move along the axial direction of the screw (210), so that the second part (202) abuts against the ceiling; The resistance of the threaded portion (211) of the screw (210) when passing through the through hole (120) is greater than the resistance of the smooth portion (212) of the screw (210) when passing through the through hole (120).

2. The fixing device (1) according to claim 1, characterized in that, During a period of time when the threaded portion (211) of the screw (210) disengages from the engagement portion of the first part (201) of the lug and moves toward the through hole portion (120), the threaded portion (211) of the screw (210) does not engage with the through hole portion (120).

3. The fixing device (1) according to claim 1, characterized in that, The diameter of the through hole (120) is larger than the diameter of the smooth rod (212) of the screw (210) and smaller than the width of the widest part of the cross-section of the threaded part (211) of the screw (210).

4. The fixing device (1) according to claim 1, characterized in that, The fixing device (1) is also provided with a receiving groove (11), and the fastener (20) is received in the receiving groove (11).

5. The fixing device (1) according to claim 1, characterized in that, A fixing seat (12) is also provided on the outer periphery of the fixing device (1) near the ceiling. The fixing seat (12) cooperates with the second part (202) of the hanging ear (200) to clamp the ceiling.

6. The fixing device (1) according to claim 5, characterized in that, The through hole (120) is provided on the fixed base (12).

7. The fixing device (1) according to claim 1, characterized in that, The fixing device (1) is also provided with a top cover (30) located on the side of the fixing device (1) away from the ceiling.

8. The fixing device (1) according to claim 7, characterized in that, When the second part (202) of the hanging ear moves axially close to the top cover (30), the top cover (30) abuts against the side of the second part (202) away from the ceiling.

9. The fixing device (1) according to claim 4, characterized in that, The receiving groove (11) includes a first groove (110), a second groove (111) and a third groove (112). The first groove (110) is used to receive the second part (202) of the lug (200). The first part (201) of the lug (200) moves in the second groove (111), and the screw (210) moves in the third groove (112).

10. The fixing device (1) according to claim 9, characterized in that, The receiving groove (11) is also provided with a first wall (113), which is disposed between the first groove (110) and the third groove (112); When the lug (200) moves along the axial direction of the screw (210) past the first wall (113), it moves into the first groove (110).

11. The fixing device (1) according to claim 10, characterized in that, The receiving groove (11) is also provided with a second wall (114), which is located on the side of the second groove (111) and the third groove (112) away from the first groove (110); The lug (200) moves axially along the second wall (114) in the second groove (111) or the third groove (112).

12. The fixing device (1) according to claim 9, characterized in that, The second part (202) of the hanging ear (200) is provided with an anti-slip part (203) on the surface facing the ceiling, and the anti-slip part (203) includes a plurality of grooves.

13. The fixing device (1) according to claim 12, characterized in that, The anti-slip part (203) is also provided with cushioning material.

14. A ceiling-mounted device, characterized in that, The ceiling-mounted device includes a fixing device as described in any one of claims 1-13 and a device to be installed, wherein the fixing device is used to install the device to be installed.

15. A ceiling-mounted device, characterized in that, The ceiling-mounted device includes a fixing device as described in any one of claims 1-13, the fixing device being used to mount the ceiling-mounted device.

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