Fixing device and ceiling equipment

Abstract

The utility model provides a fixing device and ceiling equipment.The fixing device is used for installing the ceiling equipment.The fixing device comprises a fastener, the fastener comprises a hanging lug and a screw, the hanging lug is provided with a first part and a second part, and the screw is provided with a threaded part and a polished rod part; wherein the threaded part of the screw rod is connected with the first part of the hanging lug, and the first part of the hanging lug drives the second part to move in the axial direction of the screw rod, so that the second part abuts against a suspended ceiling; the resistance of the threaded part of the screw rod when passing through the through hole part is greater than the resistance of the polished rod part of the screw rod when passing through the through hole part. In the process of mounting and dismounting the fixing device provided by the embodiment of the invention, the screw cannot be separated from or fall off from the hanging lug, and parts in the fixing device cannot be damaged.

Description

Technical Field

[0001] The present application relates to the field of smart home, and more specifically, to a fixing device and a ceiling device. Background Art

[0002] With the development of the wave of smart home, more and more ceiling devices such as smart lamps, sensors, speakers, etc. are widely installed on the ceilings of homes and public spaces. Usually, ceiling devices use a fixing device including hanging ears and screws. The hanging ears are evenly distributed around the device. The hanging ears are moved up and down by twisting the screws, so that the hanging ears are lowered and the ceiling devices are clamped on the ceiling through the fixing device to achieve the ceiling installation of the ceiling device. However, in the process of disassembling and assembling the ceiling device, due to blind disassembly, the screws and hanging ears are easily separated, and the screws fall off from the high ceiling, resulting in low installation efficiency and the risk of damaging the floor and personnel safety. Utility Model Content

[0003] The present application provides a fixing device and a ceiling device. During the process of installing and removing the fixing device, the screw rod will not separate from or fall off the hanging ear, and will not cause damage to the components in the fixing device.

[0004] In a first aspect, a fixing device is provided, which is used to install a ceiling device, and the fixing device comprises: a fastener, the fastener comprises a hook and a screw, the hook is provided with a first part and a second part, and the screw is provided with a threaded portion and a bare rod portion; wherein the threaded portion of the screw is connected to the first part of the hook, and the first part of the hook 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 portion, wherein the resistance of the threaded portion of the screw when passing through the through hole portion is greater than the resistance of the bare rod portion of the screw when passing through the through hole portion.

[0005] Based on the above technical solution, the screw will not fall off from the through hole portion during the tightening process of installation or the loosening process of disassembly, and when the screw is in an idling state in the through hole portion, it will not cause damage to the hanging ear or other components in the fixing device.

[0006] In combination with the first aspect, in certain implementations of the first aspect, after the threaded portion of the screw is disengaged from the meshing portion of the first part of the hook, the threaded portion of the screw is not meshed with the through hole portion.

[0007] In combination with the first aspect, in certain implementations of the first aspect, during a period of time when the threaded portion of the screw is disengaged from the meshing portion of the first portion of the lug and moves toward the through hole portion, the bare rod portion of the screw does not enter the meshing portion of the through hole portion. The period of time may refer to a continuous period of time after the threaded portion is disengaged from the meshing portion of the first portion of the lug, and after the continuous period of time, the threaded portion of the screw may mesh with the through hole portion.

[0008] Based on the above technical solution, after the threaded portion of the screw is disengaged from the meshing portion of the first part of the hook, since neither the threaded portion nor the bare rod portion will mesh with the through hole portion, the screw will idle here and will not damage other components in the fixing device.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the aperture of the through hole portion 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.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the fixing device is further provided with a receiving groove, and the fastener is received in the receiving groove.

[0011] Based on the above technical solution, the fastener can be prevented from being knocked by external objects, thereby improving the reliability of the fixing device. On the other hand, the overall structure of the fixing device is made more beautiful and less obtrusive.

[0012] In combination with the first aspect, in certain implementations of the first aspect, a fixing seat is further provided on a side of the outer periphery of the fixing device close to the suspended ceiling, and the fixing seat cooperates with the second portion of the hanging ear to clamp the suspended ceiling.

[0013] Based on the above technical solution, the second part of the hanging ear cooperates with the fixing seat to clamp the suspended ceiling in the middle. After the screw is tightened, the second part of the hanging ear and the fixing seat can fasten the suspended ceiling in the middle, thereby improving the stability of the fixing device during installation.

[0014] In combination with the first aspect, in some implementations of the first aspect, the through hole portion is arranged on the fixing seat.

[0015] In some possible implementations, the fixing seat and the through hole portion are connected by welding, bonding, or riveting.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the fixing device is further provided with a top cover located on a side of the fixing device away from the suspended ceiling.

[0017] In combination with the first aspect, in certain implementations of the first aspect, when the second portion of the hanging ear moves axially toward the top cover, the top cover conflicts with a side of the second portion away from the suspended ceiling.

[0018] Based on the above technical solution, when the top cover collides with the side of the second part of the hanging ear away from the ceiling and continues to loosen the screw, the top cover can limit the axial movement direction of the hanging ear, so that the threaded part of the screw withdraws from the meshing part of the first part of the hanging ear.

[0019] In combination with the first aspect, in certain implementations of the first aspect, the accommodating groove includes a first groove, a second groove and a third groove, the first groove is used to accommodate the second part of the hanging ear, the first part of the hanging ear moves in the second groove, and the screw moves in the third groove.

[0020] Based on the above technical solution, when the fixing device does not need to be installed, the ear can be prevented from being knocked by external objects, thereby improving the reliability of the fixing device. On the other hand, the overall structure of the fixing device is made more beautiful and less obtrusive.

[0021] In combination with the first aspect, in certain implementations of the first aspect, the accommodating groove is further provided with a first wall, and the first wall is arranged between the first groove and the third groove; when the hanging ear moves along the axial direction of the screw and passes over the first wall, it moves into the first groove.

[0022] Based on the above technical solution, when the fixing device is disassembled, the hanging ear can move along the first wall toward the top cover, and when the hanging ear moves over 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.

[0023] In combination with the first aspect, in certain implementations of the first aspect, the accommodating groove is further provided with a second wall, and the second wall is arranged on the side of the second groove and the third groove away from the first groove; the hanging ear moves axially in the second groove or the third groove along the second wall.

[0024] Based on the above technical solution, the second wall can limit the rotation angle of the second part of the hook when it is moved out of the first groove, so as to prevent the second part from being rotated out at too large an angle, resulting in a worse fixing effect of the fixing device. On the other hand, the second wall can also limit the axial movement of the hook in the second groove and the third groove to realize the disassembly and installation of the fixing device.

[0025] In combination with the first aspect, in some implementations of the first aspect, an anti-slip portion is provided on a surface of the second portion of the hanging ear facing the ceiling, and the anti-slip portion includes a plurality of grooves.

[0026] Based on the above technical solution, the multiple grooves can increase the friction between the second part of the hanging ear and the surface of the ceiling, making the installation of the fixing device more stable.

[0027] In combination with the first aspect, in certain implementations of the first aspect, the anti-slip portion is further provided with a buffer material.

[0028] In some possible implementations, the buffer material may be an elastic material such as foam plastic, rubber material or soft glue.

[0029] Based on the above technical solution, the buffer material is not easy to slide on the surface of the ceiling, so it can play an anti-slip effect, and because the buffer material is elastic, when the second part of the hanging ear abuts against the ceiling, the second part is not easy to cause damage to the surface of the ceiling, thereby playing a protective role on the ceiling.

[0030] In a second aspect, a ceiling device is provided, the ceiling device comprising a fixing device and a device to be installed as described in the first aspect and any one of its implementations, the fixing device being used to install the device to be installed.

[0031] In a third aspect, a ceiling device is provided, the ceiling device comprising a fixing device as described in the first aspect and any one of its implementations, the fixing device being used to install the ceiling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of a fixing device provided in an embodiment of the present application.

[0033] Figure 2 It is an exploded structural diagram of a fixing device provided in an embodiment of the present application.

[0034] Figure 3 It is a schematic diagram of different states of the fixing device provided in the embodiment of the present application during the installation or disassembly process.

[0035] Figure 4 It is a partial cross-sectional view of the fixing device provided in the embodiment of the present application. DETAILED DESCRIPTION

[0036] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0037] Embodiments of the present application are described in detail below, and examples of the embodiments of the present application are shown in the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0038] 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 understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons having ordinary skills in the technical field to which this application belongs. In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0041] With the development of the wave of smart home, more and more ceiling devices such as smart lamps, sensors, speakers, etc. are widely installed on the ceilings of homes and public spaces. Usually, ceiling devices use a fixing device including hanging ears and screws. The hanging ears are evenly distributed around the device. The hanging ears are moved up and down by twisting the screws, so that the hanging ears are lowered and the ceiling devices are clamped on the ceiling through the fixing device to achieve the ceiling installation of the ceiling device. However, in the process of disassembling and assembling the ceiling device, due to blind disassembly, the screws and hanging ears are easily separated, and the screws fall off from the high ceiling, resulting in low installation efficiency and the risk of damaging the floor and personnel safety.

[0042] In order to improve the installation efficiency and safety risks of the fixture for installing ceiling equipment, in the prior art, a nut or a retaining ring is added to the top of the screw to limit the axial movement and prevent the screw from separating from the hanging ear during the disassembly process. However, the disadvantages are that the structure is complex, the reliability is poor, the nut or the hanging ear is easily damaged, and the space at the height of the ceiling is occupied, which increases the cost. A fixture that is easy to install and disassemble is needed.

[0043] Based on the above problems, an embodiment of the present application provides a fixing device based on a non-loose screw structure, which can prevent the screw from falling at a low cost while realizing the installation of the ceiling device, and can also protect the hanging ear, thereby improving the installation efficiency and equipment reliability.

[0044] The principle of a captive screw is mainly based on the interaction between its unique structure and the connected parts to achieve the anti-falling effect. Usually, a part of the captive screw has threads, and the other part is a smooth part without threads, and the diameter of the smooth part is smaller than the diameter of the threaded part. The screw is hung on the connecting part through the smooth part with a small diameter. The connecting part can be a ferrule or a retaining ring, etc., so that the screw will not fall off from the connecting part even if it is not tightened, thereby achieving the anti-falling function.

[0045] Figure 1 It is a structural diagram of a fixing device provided in an embodiment of the present application.

[0046] Figure 2 It is an exploded structural diagram of a fixing device provided in an embodiment of the present application.

[0047] Combination Figure 1 as well as Figure 2 The fixing device 1 is used to install the ceiling device to the suspended ceiling. The fixing device 1 includes: a fastener 20, which is accommodated in the accommodating groove 11, and the fastener 20 includes a hanging ear 200 and a screw rod 210. The hanging ear 200 is provided with a first part 201 and a second part 202, and the screw rod 210 is provided with a threaded portion 211 and a bare rod portion 212; wherein, the threaded portion 211 of the screw rod 210 is connected to the first part 201 of the hanging ear 200, and the first part 201 of the hanging ear 200 drives the second part 202 of the hanging ear 200 to move along the axial direction of the screw rod 210, so that the second part 202 of the hanging ear 200 abuts against the suspended ceiling; a through hole portion 120, and the resistance of the threaded portion 211 of the screw rod 210 when passing through the through hole portion 120 is greater than the resistance of the bare rod portion 212 of the screw rod 210 when passing through the through hole portion 120.

[0048] It should be noted that the meshing portion of the first part 201 of the hook 200 refers to the portion in the first part 201 that can be meshed and connected with the threaded portion 211 of the screw 210, and can be arranged on the side of the first part 201 away from the ceiling. The second part 202 of the hook 200 can be called a pressing portion.

[0049] In some possible implementations, the smooth rod portion 212 of the screw rod 210 may pass through the through hole portion 120 in a contactless or frictionless manner. In this case, the smooth rod portion 212 passing through the through hole portion 120 may be considered to pass without resistance.

[0050] In some possible implementations, the smooth rod portion 212 of the screw 210 may be in partial contact with the through hole portion 120, and there is a certain friction resistance between the smooth rod portion 212 of the screw 210 and the through hole portion 120, but this part of the resistance can be overcome by the deadweight of the screw 210, or only a slight external force needs to be applied to make the smooth rod portion 212 of the screw 210 pass through the through hole portion 120, and 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 help of a locking tool, so 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 rod portion 212 of the screw 210 when passing through the through hole portion 120.

[0051] In some possible implementations, the diameter of the smooth rod portion 212 of the screw 210 is smaller than the width of the widest cross-section of the threaded portion 211 of the screw 210, and the aperture of the through hole portion 120 is larger than the diameter of the smooth rod portion 212 of the screw 210 and smaller than the width of the widest cross-section of the threaded portion 211 of the screw 210. Therefore, the smooth rod portion 212 of the screw 210 can pass through the through hole portion 120 with no resistance or slight resistance without the need for external force, while the threaded portion 211 of the screw 210 needs external force to pass through the through hole portion 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 portion 120. Without the application of external force, the threaded portion 211 of the screw 210 cannot pass through the through hole portion 120.

[0052] Since the first part 201 of the hook 200 is connected to the second part 202 , the first part 201 of the hook 200 can drive the second part 202 to move. The smooth rod portion 212 of the screw 210 refers to a smooth portion of the screw 210 without threads.

[0053] In some possible implementations, the fixing device 1 may further include a box 10, the interior of the box 10 may be used to place the equipment to be installed on the suspended ceiling, so that the equipment to be installed can be installed on the suspended ceiling through the fixing device 1. The suspended ceiling may also be a structure such as a ceiling. The equipment to be installed may be smart lamps, various sensors or speakers and other equipment. The embodiments of the present application do not limit the types of equipment to be installed.

[0054] 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 arranged on the outer periphery of the box body 10, or the receiving groove 11 may be a structure separately arranged on the fixing device 1 independent of the box body 10.

[0055] In some possible implementations, a fixing seat 12 is further provided on the side of the outer periphery of the fixing device 1 close to the suspended ceiling. The fixing seat 12 may be a portion extending along the outer periphery of the fixing device 1. The fixing seat 12 and the second portion 202 of the hanging ear 200 may cooperate to clamp the suspended ceiling. The through hole portion 120 may be provided on the fixing seat 12, and the fixing seat 12 may be a flange.

[0056] In some possible implementations, the fixing seat 12 and the through hole portion 120 are integrally formed, or the fixing seat 12 may be connected to the through hole portion 120 by welding, bonding, or riveting.

[0057] It can be understood that the threaded portion 211 of the screw 210 can mesh with the through hole portion 120. When the ear 200 is accommodated in the accommodating groove 11, the screw 210 can be installed. The threaded portion 211 of the screw 210 enters the accommodating groove 11 through the through hole portion 120 under the action of the tightening of the locking tool, and moves toward the direction close to the first part 201 of the ear 200. When the threaded portion 211 of the screw 210 just contacts the first part 201 of the ear 200, the threaded portion 211 of the screw 210 does not mesh with the through hole portion 120, that is, at this time, the threaded portion 211 of the screw 210 will not mesh with the through hole portion 120. Under the tightening action of the locking tool, the screw 210 is in an idling state when rotating at this time, and the screw 210 will not continue to move axially.

[0058] The meshing portion of the through hole portion 120 refers to a portion of the through hole portion 120 that can be meshed and connected with the threaded portion 211 of the screw rod 210 , for example, can be a through hole.

[0059] The receiving groove 11 can be used to receive or accommodate the fastener 20 , and can also play an axial limiting role when the fastener 20 moves.

[0060] When the screw 210 is tightened by the locking tool, the first part 201 of the ear 200 meshes with the threaded portion 211 of the screw 210, and the smooth rod portion 212 of the screw 210 does not enter the meshing portion of the through hole portion 120, the smooth rod portion 212 will not mesh with the through hole portion 120, so the screw 210 will not fall off from the through hole portion 120 during the tightening process, so that the first part 201 of the ear 200 moves along the axial direction of the screw 210 close to the side of the ceiling, and the second part 202 of the ear 200 moves together with the first part 201. When the second part 202 of the ear 200 moves to contact the ceiling, the screw 210 is continuously tightened so that the second part 202 of the ear 200 presses the ceiling, thereby realizing the installation of the fixing device 1.

[0061] When the fixing device 1 needs to be removed from the ceiling, the screw 210 can be loosened. At this time, the first part 201 of the hanging ear 200 and the threaded portion 211 of the screw 210 are in a meshing connection state. When the screw 210 is loosened, the threaded portion 211 of the screw 210 will withdraw from the meshing portion of the first part 201 of the hanging ear 200. When the threaded portion 211 of the screw 210 is disengaged from the first part 201 of the hanging ear 200, the threaded portion 211 of the screw 210 will not be meshed with the through hole portion 120; during the period when the threaded portion 211 of the screw 210 is disengaged from the meshing portion of the first part 201 of the hanging ear 200 and moves toward the through hole portion 120, the threaded portion 211 of the screw 210 is not meshed with the through hole portion 120. The period of time may refer to a continuous period of time after the threaded portion 211 is separated from the meshing portion of the first portion 201 of the hanging ear 200, during which the screw rod 210 will remain in an idling state, and after the continuous period of time, the threaded portion 211 of the screw rod 210 may mesh with the through hole portion 120. The first portion 201 of the hanging ear 200 moves away from the ceiling along the axial direction of the screw rod 210, and the second portion 202 of the hanging ear 200 moves together with the first portion 201, so that the second portion 202 of the hanging ear 200 leaves the ceiling, and at this time, the fixing device 1 and the ceiling are no longer in contact with each other, and the fixing device 1 can be removed from the ceiling.

[0062] Based on the above technical solution, the screw 210 will not fall off from the through hole portion 120 during the tightening process of installation or the loosening process of disassembly, and since the screw 210 is in an idling state, it will not cause damage to the ear 200 or other components in the fixing device 1.

[0063] In some possible implementations, the length of the bare rod portion 212 of the screw rod 210 is smaller than the length of the first portion 201 of the hanging ear 200 in the axial direction.

[0064] When the hanging ear 200 moves along the axial direction of the axial screw rod 210, the threaded portion 211 of the screw rod 210 needs to always mesh with the meshing portion of the first portion 201 of the hanging ear 200 to drive the hanging ear 200 to move axially upward or downward. When the hanging ear 200 moves along the screw rod 210 toward the ceiling, the hanging ear 200 gradually approaches the smooth rod portion 212 of the screw rod 210. If the smooth rod portion 212 is too long, the first portion 201 of the hanging ear 200 will be detached from the threaded portion 211 and slide into the smooth rod portion 212 of the screw 210 before the second portion 202 of the hanging ear 200 abuts against the ceiling. The rod portion 212 will not mesh with the first portion 201 of the hook 200, so the hook 200 will slide to the lowermost end along the light rod portion 212 under the action of gravity, making it impossible to install the fixing device 1. Therefore, when the length of the light rod portion 212 of the screw 210 is less than the length of the first portion 201 of the hook 200 in the axial direction, it can be ensured that when the hook 200 moves upward or downward along the axial direction of the screw 210, a portion of the threaded portion 211 of the screw 210 is always in a meshing connection state with the first portion 201 of the hook 200, so that the hook 200 will not fall off the screw 210.

[0065] In some possible implementations, an extended fixing seat 12 is further provided on the periphery of the fixing device 1 , and the fixing seat 12 cooperates with the second portion 202 of the hanging ear 200 to clamp the ceiling.

[0066] Figure 3 Schematic diagrams showing the fixing device in different states during installation or removal.

[0067] like Figure 3 As shown in (c), when the second part 202 of the hanging ear 200 moves to contact the ceiling 4, as the screw 210 continues to be tightened, 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.

[0068] In some possible implementations, after the second portion 202 of the hanging ear 200 abuts against the suspended ceiling 4 , the installation of the fixing device 1 can be completed, and the fixing seat 12 does not need to be in contact with the suspended ceiling 4 .

[0069] In some possible implementations, the fixing device 1 is further provided with a top cover 30 located on a side of the fixing device 1 away from the suspended ceiling 4 .

[0070] Combination Figure 1 , Figure 2 as well as Figure 3When the fixing device 1 is disassembled, the hanging ear 200 will collide with the top cover 30 during the process of moving toward the top cover 30, and the top cover 30 will play an axial limiting role on the hanging ear 200. Since the first part 201 of the hanging ear 200 is meshed with the threaded part 211 of the screw 210, if the screw 210 is further loosened, the screw 210 will retreat under the axial limiting role of the top cover 30. When the threaded part 211 of the screw 210 is separated from the first part 201 of the hanging ear 200, the threaded part 211 of the screw 210 will not mesh with the through hole 120; when the screw 210 exits the meshing part of the first part 201 of the hanging ear 200 and moves toward the through hole 120 for a period of time, the threaded part 211 of the screw 210 will not mesh with the through hole 120. Therefore, the screw 210 will idle at this time, so it will not fall off from the through hole 120.

[0071] In some possible implementations, the accommodating groove 11 includes a first groove 110, a second groove 111, and a third groove 112. The first groove 110 is used to accommodate the second part 202 of the hanging ear 200. The first part 201 of the hanging ear 200 moves in the second groove 111 or the third groove 112, and the screw 210 is accommodated in the third groove 112.

[0072] The first slot 110 may also be referred to as a receiving slot, the second slot 111 may also be referred to as a first sliding slot, and the third slot 112 may also be referred to as a second sliding slot.

[0073] Combination Figure 1 as well as Figure 2 When not installed, the second part 202 of the ear 200 is accommodated in the first groove 110, and the first part 201 is 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 third groove 112 along the axial direction.

[0074] It can be understood that the threaded portion 211 of the screw 210 can mesh with the meshing portion of the through hole portion 120. When the ear 200 is accommodated in the accommodating 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 toward the first part 201 of the ear 200. When the threaded portion 211 of the screw 210 just contacts the meshing portion of the first part 201 of the ear 200, the bare rod portion 212 of the screw 210 is not meshed with the through hole portion 120, and the screw 210 is in an idling state when rotating at this time.

[0075] It can be understood that since the threaded portion 211 of the screw 210 drives the first portion 201 of the ear 200 to move axially, during the process of tightening or loosening the screw 210, a portion of the screw 210 may also enter the second groove 111; during the installation of the fixing device 1, the ear 200 will move from the second groove 111 to the third groove 112.

[0076] In some possible implementations, the accommodating groove 11 is also provided with a first wall 113, and the first wall 113 is arranged between the first groove 110 and the third groove 112; when the second part 202 of the ear 200 moves along the axial direction of the screw 210 and passes over the first wall 113, it moves into the first groove 110.

[0077] Combination Figure 1 , Figure 2 as well as Figure 3 When the fixing device 1 is disassembled, the ear 200 moves from the third groove 112 to the second groove 111. When the ear 200 moves axially upward along the screw rod 210 and passes over the first wall 113, the threaded portion 211 of the screw rod 210 and the meshing portion of the first portion 201 of the ear 200 are still in a meshing connection state. Therefore, when the screw rod 210 is further loosened, the ear 200 will rotate and move into the first groove 110.

[0078] In some possible implementations, the accommodating groove 11 is further provided with a second wall 114, and the second wall 114 is arranged 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.

[0079] It should be noted that the first wall 113 may also be referred to as a first limiting wall, and the second wall 114 may also be referred to as a second limiting wall.

[0080] Combination Figure 1 , Figure 2 as well as Figure 3 When installing the fixing device 1, when tightening the screw 210, the threaded portion 211 of the screw 210 meshes with the meshing portion of the first portion 201 of the hook 200, and the second portion 202 of the hook 200 will rotate out of the first groove 110. At this time, the second wall 114 can limit the second portion 202 of the hook 200 to prevent the second portion 202 of the hook 200 from being rotated out too large an angle; when the screw 210 continues to be tightened, the second portion 202 of the hook 200 can move axially upward or downward along the second wall 114 in the second groove 111 or the third groove 112.

[0081] In some possible implementations, an anti-slip portion 203 is provided on the surface of the second portion 202 of the hanging ear 200 facing the ceiling 4 .

[0082] like Figure 2 As shown, an anti-slip portion 203 is also provided on the surface of the second part 202 of the hanging ear 200 facing the ceiling. The anti-slip portion 203 may include a plurality of grooves, and the grooves may be densely arranged. When the second part 202 of the hanging ear 200 moves axially to contact the ceiling surface, the plurality of densely arranged grooves may increase the friction between the second part 202 and the ceiling, thereby making the installation of the fixing device 1 more stable.

[0083] Still Figure 2 As shown, in some possible implementations, the anti-slip portion 203 may include a buffer material, which may be an elastic material such as foam plastic, rubber material or soft glue. When the second portion 202 of the hook 200 moves axially to contact the surface of the ceiling, the anti-slip portion 203 contacts the surface of the ceiling, and the buffer material is not easy to slide on the surface of the ceiling, thereby achieving an anti-slip effect. Moreover, since the buffer material is elastic, when the second portion 202 of the hook 200 abuts against the ceiling, the second portion 202 is not easy to damage the surface of the ceiling, thereby achieving a protective effect on the ceiling.

[0084] The following combination Figure 1 , Figure 2 A fixing device provided in an embodiment of the present application is introduced.

[0085] The fixing device 1 comprises a box body 10, a fastener 20, and a top cover 30 located on a side of the fixing device 1 away from the ceiling, wherein the box body 10 is provided with a receiving groove 11 and a fixing seat 12, the fastener 20 is arranged in the receiving groove 11 of the box body 10, the fixing seat 12 is located on the outer periphery of a side of the box body 10 close to the ceiling, the fixing seat 12 is provided with a through hole portion 120, the fastener 20 comprises a hanging ear 200 and a screw rod 210, the hanging ear 200 is provided with a first part 201 and a second part 202, the screw rod 210 is provided with a threaded portion 211 and a bare rod portion 2 12. The screw 210 passes through the through-hole portion 120, the threaded portion 211 of the screw 210 is connected to the meshing portion of the first portion 201 of the hook 200, the bare rod portion 212 of the screw 210 passes through the through-hole portion 120, the first portion 201 of the hook 200 drives the second portion 202 to move along the axial direction of the screw 210, the top cover 30 conflicts with the second portion 202 of the hook 200, and 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 bare rod portion 212 of the screw 210 when passing through the through-hole portion 120.

[0086] 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 is disengaged from the first part 201 of the hook 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 is disengaged from the engaging portion of the first part 201 of the hook 200, the threaded portion 211 of the screw 210 is not engaged with the through hole portion 120, and the screw 210 can only idle at this time and will not fall off from the through hole portion 120, and the screw 210 will not cause any damage to the first part 201 of the hook 200.

[0087] Since the first part 201 of the hook 200 is connected to the second part 202 , the first part 201 can drive the second part 202 to move. The smooth rod portion 212 of the screw rod 210 refers to a smooth portion of the screw rod 210 that is not provided with threads.

[0088] It can be understood that the length of the bare rod portion 212 of the screw rod 210 is smaller than the length of the first portion 201 of the hanging ear 200 in the axial direction.

[0089] When the hanging ear 200 moves along the axial direction of the axial screw rod 210, the threaded portion 211 of the screw rod 210 needs to always mesh with the meshing portion of the first portion 201 of the hanging ear 200 to drive the hanging ear 200 to move axially upward or downward. When the hanging ear 200 moves along the screw rod 210 toward the ceiling, the hanging ear 200 gradually approaches the smooth rod portion 212 of the screw rod 210. If the smooth rod portion 212 is too long, the first portion 201 of the hanging ear 200 will be detached from the threaded portion 211 and slide into the smooth rod portion 212 of the screw 210 before the second portion 202 of the hanging ear 200 abuts against the ceiling. The rod portion 212 will not mesh with the first portion 201 of the hook 200, so the hook 200 will slide to the lowermost end along the light rod portion 212 under the action of gravity, making it impossible to install the fixing device 1. Therefore, when the length of the light rod portion 212 of the screw 210 is less than the length of the first portion 201 of the hook 200 in the axial direction, it can be ensured that when the hook 200 moves upward or downward along the axial direction of the screw 210, a portion of the threaded portion 211 of the screw 210 is always in a meshing connection state with the first portion 201 of the hook 200, so that the hook 200 will not fall off the screw 210.

[0090] Still Figure 1 as well as Figure 2As shown, the accommodating groove 11 includes a first groove 110, a second groove 111 and a third groove 112. The first groove 110 is used to accommodate the second part 202 of the hanging ear 200. The first part 201 of the hanging ear 200 moves in the second groove 111 or the third groove 112. The screw 210 is accommodated in the third groove 112 and can move in the axial direction in the third groove 112.

[0091] It can be understood that since the threaded portion 211 of the screw 210 drives the first portion 201 of the ear 200 to move axially, during the process of tightening or loosening the screw 210, a portion of the screw 210 may also enter the second groove 111; during the installation of the fixing device 1, the ear 200 will move from the second groove 111 to the third groove 112.

[0092] It can be understood that the threaded portion 211 of the screw 210 can mesh with the meshing portion of the through hole portion 120. When the ear 200 is accommodated in the accommodating groove 11 of the box body 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 toward the first part 201 of the ear 200. When the threaded portion 211 of the screw 210 just contacts the meshing portion of the first part 201 of the ear 200, the bare rod portion 212 of the screw 210 will not mesh with the through hole portion 120, and the screw 210 is in an idling state when rotating here.

[0093] When the fixing device 1 has not been installed, the hook 200 can be regarded as being in an initial storage state, and the second part 202 of the hook 200 is stored in the first groove 110, so that when it does not need to be installed, the fixing device 1 looks more integrated, and the second part 202 of the hook 200 can be prevented from being knocked by external objects, making the overall structure of the fixing device 1 more beautiful and less abrupt.

[0094] Still Figure 1 as well as Figure 2 As shown, the accommodating groove 11 is further provided with a first wall 113 and a second wall 114 , wherein the first wall 113 is provided between the first groove 110 and the third groove 112 , and the second wall 114 is provided on a side of the third groove 112 away from the first groove 110 .

[0095] When the second part 202 of the hook 200 moves along the axial direction of the screw 210 and passes over the first wall 113, it moves into the first groove 110. The second wall 114 is used to limit the rotation angle of the hook 200 and make the hook 200 move axially. The second part 202 moves axially in the second groove 111 or the third groove 112 along the second wall 114.

[0096] like Figure 2As shown, an anti-slip portion 203 is also provided on the surface of the second part 202 of the hanging ear 200 facing the ceiling. The anti-slip portion 203 may include a plurality of grooves, and the grooves may be densely arranged. When the second part 202 of the hanging ear 200 moves axially to contact the ceiling surface, the plurality of densely arranged grooves may increase the friction between the second part 202 and the ceiling, thereby making the installation of the fixing device 1 more stable.

[0097] Still Figure 2 As shown, in some possible implementations, the anti-slip portion 203 may include a buffer material, which may be an elastic material such as foam plastic, rubber material or soft glue. When the second portion 202 moves axially to contact the surface of the ceiling, the anti-slip portion 203 contacts the surface of the ceiling, and the buffer material is not easy to slide on the surface of the ceiling, thereby achieving an anti-slip effect. Moreover, since the buffer material is elastic, when the second portion 202 abuts against the ceiling, the second portion 202 is not easy to damage the surface of the ceiling, thereby achieving a protective effect on the ceiling.

[0098] Figure 3 Schematic diagrams showing the fixing device in different states during installation or removal.

[0099] like Figure 3 As shown in (a) , the fixing device 1 can be installed in the installation hole 5 reserved in the ceiling 4.

[0100] It is understandable that when the fixing device 1 has not been installed, the second portion 202 of the hanging ear 200 is received in the first groove 110 .

[0101] When installing the fixing device 1 in the installation hole 5 reserved in the ceiling 4, first place the fixing device 1 in the installation hole 5, and tighten the screw 210 at the same time. As the screw 210 rotates, the second part 202 of the hanging ear 200 is screwed out from the first groove 110. Figure 3 As shown in (b) of the figure, the rotation stops after the second wall 114 is contacted. At this time, the screw rod 210 continues to rotate, and the threaded portion 211 of the screw rod 210 is engaged with the meshing portion of the first portion 201 of the hanging ear 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 rod 210, and continues to move axially downward along the third groove 112. When the second portion 202 of the hanging ear 200 moves axially downward to contact the ceiling 4, the ceiling 4 is clamped between the second portion 202 of the hanging ear 200 and the fixing seat 12 of the fixing device 1, as shown in FIG. Figure 3 As shown in (c) in the figure, the screw rod 210 is further tightened. When the screw rod 210 is tightened, the fixing device 1 can be installed in the ceiling 4.

[0102] like Figure 3 As shown in (d), when the fixing device 1 has been installed in the installation hole 5 of the ceiling 4 and needs to be removed from the installation hole 5 of the ceiling 4, the screw 210 can be loosened first, and the ear 200 moves axially upward along the third groove 112 under the action of the first wall 113. At this time, the second part 202 of the ear 200 and the fixing seat 12 of the fixing device 1 originally clamp the ceiling 4. As the ear 200 moves axially upward, the second part 202 of the 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 ear 200 continues to move axially upward in the third groove 112. When the second part 202 of the ear 200 completely passes When the first wall 113 is engaged, the second part 202 will rotate into the first groove 110 as the screw 210 rotates. At this time, the ear 200 conflicts with the top cover 30, and the top cover 30 plays an axial limiting role. When the screw 210 continues to be loosened, the screw 210 retreats and moves axially downward in the third groove 112. When the threaded portion 211 of the screw 210 disengages from the meshing portion of the first part 201 of the ear 200 and moves toward the through hole portion 120, the threaded portion 211 of the screw 210 is not engaged with the through hole portion 120. The screw 210 can only idle at this time, so that the screw 210 will not fall off from the through hole portion 120, and will not cause damage to the first part 201 of the ear 200.

[0103] Figure 4 It is a partial cross-sectional view of the fixing device provided in the embodiment of the present application.

[0104] The following combination Figure 4 , further illustrating the principle of preventing the screw from falling off in the fixing device provided in the embodiment of the present application, such as Figure 4 As shown, the fixing device 1 is in an unmounted state at this time. The unmounted state may refer to a state in which the second portion 202 of the hanging ear 200 is received in the first groove 110 when the fixing device 1 has not been installed. The unmounted state may also refer to a state in which the second portion 202 of the hanging ear 200 has just rotated into the first groove 110 as the screw 210 is loosened and rotated when the fixing device 1 is disassembled. After the threaded portion 211 of the screw 210 is separated from the first portion 201 of the hanging ear 200, the threaded portion 211 of the screw 210 will not mesh with the through hole portion 120; when the threaded portion 211 of the screw 210 is separated from the meshing portion of the first portion 201 of the hanging ear 200 and moves toward the through hole portion 120 for a period of time, the threaded portion 211 of the screw 210 will not mesh with the through hole portion 120. The screw 210 will remain in an idle state at this time, and the screw 210 will not fall off from the through hole portion 120.

[0105] In some possible implementations, Figure 4In the figure, d0 represents the hole diameter of the through hole portion 120 , d1 represents the diameter of the threaded portion 211 of the screw 210 , and d2 represents the diameter of the smooth rod portion 212 of the screw 210 , wherein d0 is smaller than d1 and larger than d2.

[0106] 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 over 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 installation hole 5, and the hanging ear 200 will not contact the ceiling 4. When the hanging ear 200 leaves the ceiling 4, the fixing device 1 can be removed from the ceiling 4.

[0107] It should be noted that when the hanging ear 200 has returned to the first groove 110, if the screw 210 is further loosened, the top cover 30 will play a limiting role in the axial direction, and the screw 210 will retreat and move downward along the axial direction, and the resistance of the threaded portion 211 of the screw 210 passing through the through hole portion 120 is greater than the resistance of the bare rod portion 212 of the screw 210 passing through the through hole portion 120. After the threaded portion 211 of the screw 210 is separated from the first part 201 of the hanging ear 200, the threaded portion 211 of the screw 210 will not mesh with the through hole portion 120; during the period when the threaded portion 211 of the screw 210 exits the meshing portion of the first part 201 of the hanging ear 200 and moves toward the through hole portion 120, the threaded portion 211 of the screw 210 will not mesh with the through hole portion 120. The screw 210 will only continue to idle at this time, so it will not cause damage to the first part 201 of the hanging ear 200.

[0108] In some possible implementations, when the aperture of the through hole 120 of the fixing seat 12 is between the diameter of the smooth rod portion 212 and the diameter of the threaded portion 211 of the screw 210 , the hanging ear 200 will not fall off even if the locking tool is removed.

[0109] Based on the above technical solution, by designing the diameter of the threaded portion 211 of the screw 210, the diameter of the smooth rod portion 212 and the aperture of the through hole portion 120, the screw 210 will not fall off during the installation or disassembly of the fixing device 1, and will not cause damage to the components of the fixing device 1.

[0110] An embodiment of the present application further provides a ceiling-mounted device, which includes any one of the fixing devices in the above embodiments and a device to be installed, wherein the fixing device is used to install the device to be installed on the ceiling.

[0111] It is understandable that the device to be installed may be a smart lamp, a speaker, a sensor or other device, and the embodiment of the present application does not limit the type of the device to be installed.

[0112] An embodiment of the present application further provides a ceiling device, which includes any one of the fixing devices in the above embodiments, and the fixing device is used to install the ceiling device to the suspended ceiling.

[0113] The ceiling-mounted device may be a smart lamp, a speaker, a sensor or other device that is already equipped with a fixing device. The embodiments of the present application do not limit the type of the ceiling-mounted device.

[0114] It can be understood that, in the fixing device provided in the embodiment of the present application, the box body may include a plurality of fasteners and corresponding through-hole portions.

[0115] In some possible implementations, the fixing device may be provided with four sets of fasteners and through-hole portions, thereby achieving a more stable installation effect for the ceiling device.

[0116] A suspended ceiling may also refer to a structure such as a ceiling that enables a fixing device to be installed or clamped.

[0117] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0118] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A fixing device (1), characterized in that: The fixing device (1) is used for installing a ceiling device, and the fixing device (1) comprises: A fastener (20), the fastener (20) comprising a hanging ear (200) and a screw (210), the hanging ear (200) being provided with a first portion (201) and a second portion (202), the screw (210) being provided with a threaded portion (211) and a bare portion (212); wherein the threaded portion (211) of the screw (210) is connected to the first portion (201) of the hanging ear (200), and the first portion (201) of the hanging ear (200) drives the second portion (202) to move along the axial direction of the screw (210), so that the second portion (202) abuts against the ceiling; The through hole portion (120) is characterized in that the resistance of the threaded portion (211) of the screw rod (210) when passing through the through hole portion (120) is greater than the resistance of the smooth rod portion (212) of the screw rod (210) when passing through the through hole portion (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 rod (210) is disengaged from the meshing portion of the first portion (201) of the hook and moves toward the through hole portion (120), the threaded portion (211) of the screw rod (210) is not meshed with the through hole portion (120).

3. The fixing device (1) according to claim 1, characterized in that The hole diameter of the through hole portion (120) is larger than the diameter of the smooth rod portion (212) of the screw rod (210) and smaller than the width of the widest part of the cross section of the threaded portion (211) of the screw rod (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) on a side close to the suspended ceiling, and the fixing seat (12) cooperates with the second part (202) of the hanging ear (200) to clamp the suspended ceiling.

6. The fixing device (1) according to claim 5, characterized in that The through hole portion (120) is arranged on the fixing seat (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 a side of the fixing device (1) away from the suspended ceiling.

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

9. The fixing device (1) according to claim 4, characterized in that The accommodating groove (11) comprises a first groove (110), a second groove (111) and a third groove (112); the first groove (110) is used to accommodate the second part (202) of the hanging ear (200); the first part (201) of the hanging ear (200) moves in the second groove (111); and the screw rod (210) moves in the third groove (112).

10. The fixing device (1) according to claim 9, characterized in that The accommodating groove (11) is further provided with a first wall (113), and the first wall (113) is provided between the first groove (110) and the third groove (112); When the hanging ear (200) moves along the axial direction of the screw rod (210) and passes over the first wall (113), it moves into the first groove (110).

11. The fixing device (1) according to claim 10, characterized in that The accommodating groove (11) is further provided with a second wall (114), and the second wall (114) is provided on a side of the second groove (111) and the third groove (112) away from the first groove (110); The hanging ear (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 An anti-slip portion (203) is provided on the surface of the second portion (202) of the hanging ear (200) facing the suspended ceiling, and the anti-slip portion (203) includes a plurality of grooves.

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

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

15. A ceiling device, characterized in that: The ceiling device comprises a fixing device as described in any one of claims 1 to 13, and the fixing device is used for installing the ceiling device.

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