CN112344407A - Decoration cover mounting device and range hood applying same - Google Patents

Abstract

The invention discloses a decorative cover mounting device, which is characterized in that: the decorative cover comprises a shell, a driving layer and supporting arms, wherein the shell is used for being fixed with an external installation base, the driving layer is arranged in the shell, the supporting arms are provided with at least two supporting arms, so that the two opposite sides of the shell are provided with the supporting arms, one end of each supporting arm is connected into the shell, the other end of each supporting arm is used for supporting the decorative cover, and each supporting arm can be driven by the driving layer to rotate in the longitudinal direction and the transverse direction relative to one end. Also discloses a range hood applying the mounting device and a mounting method of the range hood. Compared with the prior art, the invention has the advantages that: through breaking away from the installation device that decorates the cover and set up alone, adopt can support and the lift decorate the installation that the cover accomplished the decoration cover at horizontal and vertical two orientation pivoted support arms, can adapt to the decoration cover of split type and integral type, can realize decorating cover automatic rising and regulating to can realize decorating cover and furred ceiling seamless connection.

Description

Decoration cover mounting device and range hood applying same

Technical Field

The invention relates to an oil fume purification device, in particular to a decoration cover installation device and a range hood applying the installation device.

Background

The decoration cover of range hood is used for sheltering from the air-out cover and the air-out pipe at range hood top, plays pleasing to the eye, decorative effect, and the decoration cover can be taken out from range hood's top usually, carries out height control according to the height in user's house. The decoration cover is generally divided into a lower decoration cover fixed to the case and an upper decoration cover capable of being drawn out and drawn up and down, and the upper decoration cover is generally disposed inside the lower decoration cover for aesthetic and safety reasons. The lower decorative cover is divided into two different forms: 1. the split type lower decorative cover can be fixed on the box body after the range hood is installed, usually, screws are exposed, and the range hood has the characteristics of poor attractiveness, integrity and installation firmness, but is simple and convenient to install; 2. the integrated lower decorative cover is integrally connected or formed with the range hood box body, not only has a decorative function, but also generally has a use function, for example, a switch or a lamp is arranged on the lower decorative cover; the integrated lower decorative cover is generally used for a high-end range hood and is characterized in that the lower decorative cover cannot be mounted later and is integrally connected with the whole range hood, so that the upper decorative cover can only be pulled from bottom to top.

The existing drawable decorative cover has the following problems: 1. the gap between the decorative cover and the suspended ceiling is too large, and the appearance is influenced. 2. Before the decorative cover is installed, the shell of the range hood needs to be dismantled firstly, and the installation is inconvenient. 3. The decoration cover is connected with the hook or the wall from the outer surface of the decoration cover in a screw driving mode, and the appearance of the whole machine is damaged. 4. When the smoke tube shielded by the decorative cover needs to be cleaned or the electric part shielded by the decorative cover needs to be repaired, the shell of the range hood needs to be detached, and the range hood is inconvenient to detach.

The applicant's chinese patent application No. 201610444600.6 discloses a mounting structure of a decorative cover of a range hood, and provides a mounting structure of a decorative cover of a range hood, which is convenient to mount and can realize seamless connection between the decorative cover and a ceiling. In the actual product application process, the mounting structure has the following problems: 1. the requirement on the installation precision of the hook is high: in vertical direction, the distance between couple and the furred ceiling needs to be measured and fix according to the designing requirement through installer, then decorates the unable installation of cover if the couple installation is on the high side, then decorates cover and furred ceiling and have the clearance if on the low side, influences beautifully. 2. Easy falling: because the structure is that the spring bolt is connected with the surface of the hook, if the hook is installed to the left or the right, the size of the contact surface between the spring bolt and the hook support is directly influenced. The motor of the range hood has self-excited vibration phenomenon in the high-speed operation process, and the impeller of the range hood has certain dynamic balance deviation under the influence of the manufacturing process and the use condition of a user, so that the range hood has small vibration in the use process. The long-term vibration accumulation causes the latch bolt and the hook to shift left or right or forward until the two are separated, resulting in the decorative cover falling off. 3. The front end of the lock tongue is exposed, which affects the beauty.

In order to realize seamless installation, chinese patent with application number 201610608530.3 discloses a range hood decorative cover lifting mechanism applied to the technical field of range hood parts, a fixing plate of the range hood decorative cover lifting mechanism is installed on a wall surface, a V-shaped left crank arm is installed on a left mounting plate, a V-shaped right crank arm is installed on a right mounting plate, one end of the left crank arm is connected with a left bracket of a decorative cover, one end of the right crank arm is connected with a right bracket of the decorative cover, a left crank arm tension spring is installed between the left crank arm and the left mounting plate, and a right crank arm tension spring is installed between the right crank arm and the right mounting plate.

As is known from the mounting process disclosed in the above patent document, the left/right support frame is mounted from front to back through the upper decorative cover, and the left/right crank arm head is rotated by pulling the left/right crank arm head, thereby mounting the decorative cover. That is, this mounting structure is applicable only to the above-described trim cover of the form 1, but is not applicable to the trim cover of the form 2; the decorative cover is only suitable for one size type of decorative cover, if the decorative cover is widened or narrowed, the decorative cover cannot be installed, and the decorative cover needs to be adjusted again according to the specific size of the decorative cover; although automatic installation can be realized through the extension spring in the installation, when decorating the cover and needing to dismantle, the extension spring has nevertheless become the resistance source of dismantling, leads to dismantling the difficulty.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide a decoration cover installation device aiming at the defects of the prior art, so that the installation universality is improved, the automatic lifting adjustment of the decoration cover can be realized, and the seamless connection between the decoration cover and a suspended ceiling is realized.

The second technical problem to be solved by the invention is to provide a range hood applying the mounting device;

the third technical problem to be solved by the invention is to provide an installation method of the range hood.

The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a decorate cover installation device which characterized in that: the decorative cover comprises a shell, a driving layer and supporting arms, wherein the shell is used for being fixed with an external installation base, the driving layer is arranged in the shell, the supporting arms are provided with at least two supporting arms, so that the two opposite sides of the shell are provided with the supporting arms, one end of each supporting arm is connected into the shell, the other end of each supporting arm is used for supporting the decorative cover, and each supporting arm can be driven by the driving layer to rotate in the longitudinal direction and the transverse direction relative to one end.

And each opposite side of the shell is provided with two supporting arms which rotate in opposite directions in the transverse direction.

The mounting device further comprises a rotating mechanism layer and a first clapboard which are arranged in the shell, wherein the rotating mechanism layer comprises a first central shaft which extends longitudinally and is driven by the driving layer to rotate around the axis of the rotating mechanism layer, a first transmission shaft and a second transmission shaft which are arranged in parallel with the first central shaft, the first transmission shaft and the second transmission shaft are supported on the first clapboard so as to rotate around the axis of the rotating mechanism layer in opposite directions, the first transmission shaft comprises two transmission shafts which are symmetrically arranged relative to the first central shaft, the second transmission shaft comprises two transmission shafts which are symmetrically arranged relative to the first central shaft, and the first transmission shaft and the second transmission shaft are arranged at intervals; the end of each support arm can be connected to a respective drive shaft, so that the support arm can be rotated in the transverse direction.

The mounting device is characterized by further comprising a lifting mechanism layer, a second partition plate and a connecting rod, wherein the lifting mechanism layer is arranged in the shell, the connecting rod corresponds to the supporting arm, the lifting mechanism layer comprises a second central shaft which extends longitudinally and can rotate around the axis of the second central shaft by being driven by a driving layer, the second partition plate is driven by the second central shaft to lift, one end of the connecting rod is used for being connected with the second partition plate in a rotating mode, and the other end of the connecting rod is connected with the corresponding supporting arm in a rotating mode, so that the supporting arm can rotate in the longitudinal.

Be provided with first connecting seat on first transmission shaft and the second transmission shaft respectively, seted up first connecting hole on every first connecting seat, first connecting hole extends on horizontal, and every first connecting hole rotates with corresponding support arm to be connected.

The second center pin periphery has the screw thread, the partial periphery cover that the second center pin has the screw thread is equipped with the nut, the nut is fixed with the second baffle, and the edge of second baffle is provided with the breach, be provided with on the inside wall of casing with breach complex arch to make the second baffle can only go up and down relative casing.

The rotary column is arranged on the second partition plate, a rotary column capable of rotating around the axis of the rotary column relative to the rotary sleeve is arranged in the rotary sleeve, the axis of the rotary column is parallel to the second central shaft, a second connecting seat is arranged on each rotary column, a second connecting hole is formed in each second connecting seat, the second connecting holes extend in the transverse direction, and each second connecting hole is rotatably connected with the corresponding connecting rod end.

The connecting rod is a telescopic rod.

The driving layer comprises a first motor, a second motor, a first transmission gear set for transmitting the output of the first motor to the rotating mechanism layer and a second transmission gear set for transmitting the output of the second motor to the lifting mechanism layer.

And a first pressure sensor and a second pressure sensor are arranged on each supporting arm, the first pressure sensor is arranged at the outer side of the end part of each supporting arm, and the second pressure sensor is arranged at the top surface of the end part of each supporting arm.

The mounting device further comprises a horizontal support platform arranged on the top of the shell so as to mount the shell to the mounting base, the horizontal support platform and the shell can slide in a transverse direction, and the horizontal support platform can adjust levelness.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the utility model provides an be applied to range hood as above installation device, is including decorating the cover, decorate the cover including the cover body, the cover body includes left side wall and right side wall, its characterized in that: the mounting devices are provided with two mounting devices corresponding to the inner part of the cover body, one mounting device is positioned on the inner side of the left side wall, the other mounting device is positioned on the inner side of the right side wall, the two opposite sides of the shell are the left side and the right side, the tops of the left side wall and the right side wall extend for a certain distance to the inner part of the cover body and then are bent downwards to form flanges, and the end parts of the supporting arms can be supported below the flanges.

The technical scheme adopted by the invention for solving the third technical problem is as follows: the range hood comprises a connecting rod, a first pressure sensor and a second pressure sensor, and each side opposite to the shell is provided with two supporting arms which rotate in opposite directions in the transverse direction, and the range hood is characterized in that: the method comprises the following steps:

1) firstly, the mounting device is centrally mounted on an external mounting base relative to the decorative cover;

2) then, lifting the decoration cover to enable the flanging of the decoration cover to be higher than the supporting arm; starting the installation device, and entering an automatic size adaptation program:

2.1) the included angle between two adjacent supporting arms is reduced, and the first pressure sensor on each supporting arm respectively obtains readings X1, X2, X3 and X4;

2.2) comparing the reading of each first pressure sensor with a preset first threshold value K, if X1 is more than or equal to K, X2, more than or equal to K, X3 and more than or equal to X4, stopping the transverse rotation of each supporting arm, entering the step 3), and starting a quality confirmation program; otherwise, returning to the step 2.1);

3) in the quality confirmation procedure of the decoration cover, the following steps are included:

3.1) starting;

3.2) the second pressure sensor on each support arm respectively obtains readings G1, G2, G3 and G4, and then enters step 4), and starts a seamless installation procedure;

4) in the seamless installation program, the following steps are included:

4.1) starting, so that one end of the supporting arm far away from the shell rotates upwards;

4.2) the second pressure sensor on each support arm obtains readings F1, F2, F3 and F4, respectively;

4.3) comparing the reading of each second pressure sensor with a preset second threshold value N, and if F1-G1-N, F2-G2-N, F3-G3-N or F4-G4-N is met, stopping the longitudinal rotation of the supporting arm, and entering the step 4.4); otherwise, returning to the step 4.1);

4.4) extending each link rod to enable one end of each support arm far away from the shell to continue rotating upwards, wherein each support arm is supported at the flanging position of the decoration cover, and the second pressure sensor on each support arm obtains refreshed readings F1, F2, F3 and F4 respectively;

4.5) if the condition that F1-G1 is larger than or equal to N is met, stopping the elongation of the corresponding connecting rod, finishing the installation procedure, and returning to the step 4.4) if the condition is not met; if F2-G2 is satisfied, the corresponding connecting rod stops extending, the installation procedure is finished, and if not, the step 4.4) is returned to; if F3-G3 is satisfied, the corresponding connecting rod stops extending, the installation procedure is finished, and if not, the step 4.4) is returned to; if F4-G4 ≧ N is satisfied, the corresponding link stops elongating, the installation procedure is ended, otherwise, go back to step 4.4).

Compared with the prior art, the invention has the advantages that: the mounting device is separated from the decorative cover and is independently arranged, the supporting arm which can rotate in the transverse direction and the longitudinal direction is adopted to support and lift the decorative cover to complete the mounting of the decorative cover, the mounting device can adapt to split type and integrated decorative covers, the universality is wider, the decorative cover can be conveniently and quickly dismounted and mounted, the mounting is simple and reliable, the automatic lifting adjustment of the decorative cover can be realized, and the seamless connection between the decorative cover and a suspended ceiling can be realized; in addition, the mounting device has no part exposed outside the range hood body or the decoration cover, so that the appearance of the whole range hood is attractive.

Drawings

FIG. 1 is a schematic view of a range hood according to an embodiment of the present invention in a pre-installation state;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of a trim cover mounting arrangement according to an embodiment of the present invention;

FIG. 4 is a schematic view of the engagement of the horizontal support platform and the upper cover of the trim cover mounting arrangement of the present invention;

FIG. 5 is a partial cross-sectional view of a trim cover mounting arrangement according to an embodiment of the present invention;

FIG. 6 is a schematic view of a concealed housing and upper cover of a trim cover mounting apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic view of a range hood according to an embodiment of the present invention in an installed state;

FIG. 8 is a top view of FIG. 7;

fig. 9 is a schematic view of an installation completion state of the extractor hood according to the embodiment of the present invention;

FIG. 10 is a flow chart of an installation method for automatic size adaptation of a range hood according to an embodiment of the present invention;

FIG. 11 is a flow chart of the quality confirmation of the range hood trim cover according to the embodiment of the present invention;

FIG. 12 is a flow chart of a seamless installation method of a range hood according to an embodiment of the present invention;

fig. 13 is a flow chart of the dismounting of the extractor hood according to the embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the invention, it is also to be noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, a range hood comprises a range hood body 1, a decorative cover 2 and a mounting device 3 for the decorative cover, wherein the decorative cover 2 is arranged on the upper portion of the range hood body 1 and can be longitudinally drawn relative to the range hood body 1. The trim cover 2 includes a cover body 21 whose rear side is open, and the cover body 21 includes a front side wall 211, a left side wall 212, and a right side wall 213, so that the cross section of the cover body 21 is substantially U-shaped. Flanges 22 are respectively provided on the top of the left and right side walls of the cover 21, and the flanges 22 are formed by extending a certain distance from the top of the left side wall 212 or the right side wall 213 of the cover 21 to the inside of the cover 21.

The mounting device 3 is used to mount the trim cover 2 to an external mounting base (wall surface), and enables seamless mounting with the ceiling 200 (see fig. 7).

Referring to fig. 2 to 6, each mounting device 3 includes a housing 31, an upper cover 32 provided on the top of the housing 31, a lower cover 33 provided on the bottom of the housing 31, a support arm 34, and a link 35.

The housing 31 is hollow, a first partition 361 and a second partition 362 are provided in the housing 31, and the first partition 361 is provided above the second partition 362 at an interval. A rotation mechanism layer is provided above the first partition 361, a drive layer is provided in a space between the first partition 361 and the second partition 362, and a lift mechanism layer is provided below the second partition 362. The driving layer includes a first motor 371, a second motor 372, a first transmission gear set 373, and a second transmission gear set 374 in the present embodiment. The first transmission gear set 373 may transmit the torque of the first motor 371 to the rotation mechanism layer, and the second transmission gear set 374 may transmit the torque of the second motor 372 to the lift mechanism layer. The output shaft of the first motor 371 extends upward, and the first motor 371 may be fixed within the housing 31 by a mounting plate 375. The first transmission gear set 373 has a first primary gear 3731 as an input and a first final gear 3732 as an output. The first primary gear 3731 of the first transmission gear set 373 is provided on the output shaft of the first electric motor 371. In the present embodiment, the first transmission gear set 373 has only two gears that mesh with each other, i.e., the first primary gear 3731 and the first final gear 3732 mesh directly. Alternatively, one or more intermeshing gears may be provided between the first primary gear 3731 and the first final gear 3732. An output shaft of the second motor 372 extends downward, and the second motor 372 may be fixed to the first partition 361. The second drive gear set 374 has a second primary gear 3741 as an input and a second final gear 3742 as an output. The second primary gear 3741 of the second drive gear set 374 is disposed on the output shaft of the second electric machine 372. In this embodiment, the second drive gear set 374 has only two intermeshing gears, a second primary gear 3741 and a second final gear 3742, which are in direct mesh. Alternatively, one or more intermeshing gears may be provided between the second primary gear 3741 and the second final gear 3742.

The rotation mechanism layer includes a longitudinally extending first central shaft 381, and a first partition 361 is fixedly disposed within the housing 31. The first central shaft 381 extends downward from above the first partition 361 to below the first partition 361 so as to pass through the center of the first final stage gear 3732 of the first transmission gear set 373 and rotate in synchronization with the first final stage gear 3732. The rotating mechanism layer further includes a first transmission shaft 382 and a second transmission shaft 383, which are disposed parallel to the first central shaft 381, wherein the first transmission shaft 382 is driven by the first central shaft 381 to rotate, and the second transmission shaft 383 is driven by the first transmission shaft 382 to rotate. The first transmission shaft 382 and the first central shaft 381, and the first transmission shaft 382 and the second transmission shaft 383 may be driven by gears engaged with each other, whereby the first transmission shaft 382 and the second transmission shaft 383 rotate in opposite directions. The first transmission shafts 382 are symmetrically disposed with respect to the first central axis 381, and the second transmission shafts 383 are symmetrically disposed with respect to the first central axis 381. Preferably, the first transmission shafts 382 and the second transmission shafts 383 are arranged on the same circle centering on the first central axis 381, and the arc length between each first transmission shaft 382 and the adjacent second transmission shaft 383 is equal. First connection seats 384 are respectively arranged on the first transmission shaft 382 and the second transmission shaft 383, for example, on the tops of the first transmission shaft 382 and the second transmission shaft 383, a first connection hole 3841 is opened on each first connection seat 384, and the first connection hole 3841 extends in the transverse direction. The support arm 34 has four, and each first connection hole 3841 is rotatably connected to the corresponding support arm 34 by a pin or the like. Therefore, when the first transmission shaft 382 and the second transmission shaft 383 rotate around their axes respectively, the supporting arm 34 can be driven to rotate around the first connecting seat 384 in the transverse direction. The included angle between two adjacent support arms 34 on the first transmission shaft 382 and the second transmission shaft 383 is beta.

A first pressure sensor 341 and a second pressure sensor 342 are provided on each support arm 34, wherein the first pressure sensor 341 is provided outside the end portion of the support arm 34 (the end portion outside means the side of the end portion away from the respective drive shaft in the lateral direction), and the second pressure sensor 342 is provided on the top face of the end portion of the support arm 34.

The lift mechanism layer includes a second center shaft 391 extending in a longitudinal direction, which is coaxial with the first center shaft 381, and the second center shaft 391 extends downward from below the second partition 362 to above the second partition 362, passes through the center of the second final stage gear 3742 of the second transmission gear set 374, and rotates in synchronization with the second final stage gear 3742. The second central shaft 391 is a screw rod structure, which is a smooth peripheral wall except for the connection with the second final stage gear 3742, and the other positions are screw rod structures with threads. The nut 392 is sleeved on the outer periphery of the portion of the second center shaft 391 with threads, and the nut 392 is fixed with the second partition 362, so that when the second center shaft 391 is driven by the second motor 372 to rotate around its axis, the second partition 362 can be driven to move up and down by the nut 392. The second partition 362 has a notch 3621 at its edge, so that it can be engaged with the inner sidewall of the housing 31 (e.g., a protrusion matching with the notch 3621) to prevent the second partition 362 from rotating in the lateral direction relative to the housing. The second partition 362 is provided with a rotating sleeve 393, a rotating column 394 is arranged in the rotating sleeve 393, the rotating column 394 can rotate around the axis of the rotating column 394 relative to the rotating sleeve 393, and the axis of the rotating column 394 is parallel to the second central shaft 391. The rotating column 394 has four, preferably symmetrically disposed about the second central axis 391. That is, each rotating column 394 corresponds to the first transmission shaft 382 or the second transmission shaft 383, and the rotation center of each rotating column 394 coincides with the rotation center of the corresponding first transmission shaft 382 or the second transmission shaft 383. Each rotating column 394, for example, the top of the rotating column 394 is provided with a second connecting seat 395, each second connecting seat 395 is provided with a second connecting hole 3951, and the second connecting hole 3951 extends in the transverse direction. The links 35 have four, each of the second connecting holes 3951 may be pivotally connected to one end of the corresponding link 35 by a pin or the like, and the other end of each link 35 is pivotally connected to the corresponding support arm 34, for example, pivotally connected to the middle of the support arm 34, and the rotational axes of the two ends of the link 35 are parallel. Thus, when the second partition 362 is lifted, the rotation column 394 is lifted, so that the link 35 rotates around the rotation column 394 in the longitudinal direction, and the support arm 34 rotates around the first connection seat 384 in the longitudinal direction. Meanwhile, the link 35 can be driven to rotate transversely due to the transverse rotation of the support arm 34. Preferably, the connecting rod 35 can be extended and contracted in the extending direction thereof to form an extension rod, thereby changing the overall length. The telescopic structure of the link 35 is telescopic using the prior art, and the telescopic parts can be positioned relative to each other. The telescopic mechanism can be electric telescopic mechanism or manual telescopic mechanism.

Each of the support arms 34 and the links 35 extends outside the housing 31.

The mounting device 3 further includes a horizontal support 40, the horizontal support 40 is disposed above the upper cover 32, and the horizontal support 40 and the upper cover 32 are slidably engaged with each other through the structure of the sliding groove and the sliding block, so that the upper cover 32 can slide in the lateral direction (slide in the left-right direction in the mounted state) with respect to the horizontal support 40, and the housing 31 is located at the middle position of the trim cover 2. The horizontal support 40 is provided with an adjustable stud 401 to facilitate adjustment of the levelness of the horizontal support 40 when mounted with the ceiling 200. The number of the adjustable studs 401 is four, the four positions of the horizontal support platform 40 are respectively arranged, and the four adjustable studs are symmetrical to each other in pairs.

The following describes an installation process of a trim cover according to an embodiment of the present invention, including the steps of:

1) before the trim cover 2 is installed, referring to fig. 7, the installation device 3 is first installed centrally with respect to the trim cover 2 on the suspended ceiling 200 (external installation base), and the horizontal support platform 40 can be secured in a horizontal position by means of the adjustable studs 401.

2) The trim cover 2 is then lifted so that its flange 22 is above the support arms 34. The mounting device 3 is turned on and the automatic size adaptation program is started, see fig. 7 and 10:

2.1) the first motor 371 rotates forward, the included angle β between two adjacent supporting arms 34 (the adjacent first transmission shaft 382 and the supporting arm 34 connected to the second transmission shaft 383 decreases, as shown by the arrow in fig. 8, the first pressure sensor 341 on each supporting arm 34 obtains readings X1, X2, X3 and X4;

2.2) comparing the reading of each first pressure sensor 341 with a preset first threshold value K, if X1 is more than or equal to K, X2, more than or equal to K, X3 and more than or equal to X4, stopping the first motor 371, and entering a quality confirmation program; otherwise, go back to step 2.1).

3) Referring to fig. 11, in the quality confirmation process of the trim cover 2, the following steps are included:

3.1) start, a buzzer can be set to wait for the user to confirm the start;

3.2) the second pressure sensor 342 on each support arm 34 takes readings G1, G2, G3, and G4, respectively, and then enters a seamless setup procedure.

4) Referring to fig. 12, in the seamless installation procedure, the following steps are included:

4.1) starting, the second motor 372 rotates in the positive direction to drive the second partition 362 to descend, so that the upper end of the connecting rod 35 rotates in the direction close to the shell 31, and the end, far away from the shell 31, of the supporting arm 34 rotates upwards;

4.2) the second pressure sensor 342 on each support arm 34 obtains readings F1, F2, F3, and F4, respectively;

4.3) comparing the reading of each second pressure sensor 342 with a preset second threshold value N, and if F1-G1-N, F2-G2-N, F3-G3-N or F4-G4-N is met, stopping the second motor 372, stopping the longitudinal rotation of the supporting arm 34, and entering the step 4.4); otherwise, returning to the step 4.1);

4.4) extending each link 35 to make the end of the supporting arm 34 far away from the shell 31 continue to rotate upwards, each supporting arm 34 is supported at the flange 22 of the decorative cover 2, and the second pressure sensor 342 on each supporting arm 34 obtains refreshed readings of F1, F2, F3 and F4 respectively;

4.5) if F1-G1 is satisfied, the corresponding connecting rod 35 stops extending, the installation procedure is finished, otherwise, the step 4.4) is returned; if F2-G2 is satisfied, the corresponding connecting rod 35 stops extending, the installation procedure is finished, otherwise, the step 4.4) is returned; if F3-G3 is satisfied, the corresponding connecting rod 35 stops extending, the installation procedure is finished, otherwise, the step 4.4) is returned; if F4-G4 is satisfied, the corresponding connecting rod 35 stops extending, the installation procedure is finished, otherwise, the step 4.4) is returned; see fig. 9.

Referring to fig. 13, when it is necessary to remove the trim cover 2, the following steps are included:

1) initially, the link 35 is reset to the initial length;

2) the second motor 372 rotates reversely and returns to the initial state;

3) the buzzer prompts and waits for the confirmation of the user;

4) after the user confirms the detachment (receives the confirmation signal), the first motor 371 is reversely rotated, returns to the initial state, and then ends.

The mounting device 3 can adapt to split type and integrated type decorative covers, and has wider universality. The decoration cover 2 is convenient and fast to assemble and disassemble, the installation is simple and reliable, exposed parts are avoided, automatic lifting adjustment of the decoration cover 2 can be achieved, and seamless connection between the decoration cover 2 and the suspended ceiling 200 can be achieved.

Claims (13)

1. The utility model provides a decorate cover installation device which characterized in that: the decorative cover comprises a shell (31) used for being fixed with an external installation base, a driving layer arranged in the shell (31) and supporting arms (34), wherein the supporting arms (34) are at least two, so that the two opposite sides of the shell (31) are respectively provided with the supporting arms (34), one end of each supporting arm (34) is connected into the shell (31), the other end of each supporting arm is used for supporting the decorative cover (2), and each supporting arm (34) can be driven by the driving layer to rotate in the longitudinal direction and the transverse direction relative to one end of the shell (31) wound in the shell (31).

2. A trim cover mounting arrangement according to claim 1, wherein: and each opposite side of the shell (31) is provided with two supporting arms (34) with opposite rotation directions in the transverse direction.

3. A trim cover mounting arrangement according to claim 2, wherein: the mounting device further comprises a rotating mechanism layer and a first clapboard (361) which are arranged in the shell (31), the rotating mechanism layer comprises a first central shaft (381) which extends longitudinally and is driven by the driving layer to rotate around the axis of the rotating mechanism layer, a first transmission shaft (382) and a second transmission shaft (383) which are arranged in parallel with the first central shaft (381), the first transmission shaft (382) and the second transmission shaft (383) are supported on the first clapboard (361) so as to rotate around the axis of the rotating mechanism layer in opposite directions, the first transmission shaft (382) comprises two transmission shafts and is arranged symmetrically relative to the first central shaft (381), the second transmission shaft (383) comprises two transmission shafts and is arranged symmetrically relative to the first central shaft (381), and the first transmission shaft (382) and the second transmission shaft (383) are arranged at intervals; the end of each support arm (34) can be connected to a respective drive shaft, so that the support arm (34) can be rotated in the transverse direction.

4. A trim cover mounting arrangement according to claim 3, wherein: the mounting device further comprises a lifting mechanism layer arranged in the shell (31), a second partition plate (362) and a connecting rod (35) corresponding to the supporting arm (34), wherein the lifting mechanism layer comprises a second central shaft (391) which extends longitudinally and is driven by the driving layer to rotate around the axis of the second partition plate, the second partition plate (362) is driven by the second central shaft (391) to lift, one end of the connecting rod (35) is used for being rotatably connected with the second partition plate (362), and the other end of the connecting rod is rotatably connected with the corresponding supporting arm (34), so that the supporting arm (34) can rotate longitudinally.

5. A trim cover mounting arrangement according to claim 4, wherein: the first transmission shaft (382) and the second transmission shaft (383) are respectively provided with a first connecting seat (384), each first connecting seat (384) is provided with a first connecting hole (3841), the first connecting holes (3841) extend in the transverse direction, and each first connecting hole (3841) is rotatably connected with the corresponding supporting arm (34).

6. A trim cover mounting arrangement according to claim 4, wherein: the periphery of the second central shaft (391) is provided with threads, a nut (392) is sleeved on the periphery of the part of the second central shaft (391) with the threads, the nut (392) is fixed with the second partition plate (362), a notch (3621) is arranged at the edge of the second partition plate (362), and a protrusion matched with the notch (3621) is arranged on the inner side wall of the shell (31), so that the second partition plate (362) can only lift relative to the shell (31).

7. A trim cover mounting arrangement according to claim 4, wherein: be provided with rotatory sleeve (393) on second baffle (362), be provided with rotatory post (394) that can rotate sleeve (393) around self axis rotation in rotatory sleeve (393), the axis and second center pin (391) of rotatory post (394) are parallel, are provided with second connecting seat (395) on every rotatory post (394), have seted up second connecting hole (3951) on every second connecting seat (395), second connecting hole (3951) extend on horizontal, and every second connecting hole (3951) is connected with corresponding connecting rod (35) tip rotation.

8. A trim cover mounting arrangement according to claim 4, wherein: the connecting rod (35) is a telescopic rod.

9. A trim cover mounting arrangement according to any of claims 3 to 8, wherein: the driving layer includes a first motor (371), a second motor (372), a first transmission gear set (373) transmitting an output of the first motor (371) to the rotation mechanism layer, and a second transmission gear set (374) transmitting an output of the second motor (372) to the lift mechanism layer.

10. A trim cover mounting arrangement according to any of claims 1 to 8, wherein: a first pressure sensor (341) and a second pressure sensor (342) are arranged on each supporting arm (34), the first pressure sensor (341) is arranged outside the end part of the supporting arm (34), and the second pressure sensor (342) is arranged on the top surface of the end part of the supporting arm (34).

11. A trim cover mounting arrangement according to any of claims 1 to 8, wherein: the mounting device further comprises a horizontal support table (40) arranged on the top of the shell (31) so as to mount the shell (31) to a mounting base, the horizontal support table (40) and the shell (31) can slide relative to each other in the transverse direction, and the horizontal support table (40) can adjust the levelness.

12. A range hood applying the mounting device according to any one of claims 1 to 10, comprising a decorative cover (2), the decorative cover (2) comprising a cover body (21), the cover body (21) comprising a left side wall (212) and a right side wall (213), characterized in that: the mounting devices are provided with two corresponding to the inner part of the cover body (21), one mounting device is positioned on the inner side of the left side wall (212), the other mounting device is positioned on the inner side of the right side wall (213), the two opposite sides of the shell (31) are the left side and the right side, the tops of the left side wall (212) and the right side wall (213) extend for a certain distance towards the inner part of the cover body (21) and then are bent downwards to form a flanging (22), and the end part of the supporting arm (34) can be supported below the flanging (22).

13. A method of mounting a range hood according to claim 12, said range hood comprising a link (35), a first pressure sensor (341) and a second pressure sensor (342), and two support arms (34) with opposite rotation directions in the transverse direction being provided on each of opposite sides of the housing (31), characterized in that: the method comprises the following steps:

1) firstly, the mounting device is mounted to the external mounting base centrally relative to the decorative cover (2);

2) then, lifting the decorative cover (2) to enable the flanging (22) of the decorative cover (2) to be higher than the supporting arms (34); starting the installation device, and entering an automatic size adaptation program:

2.1) the included angle between two adjacent supporting arms (34) is reduced, and the first pressure sensor (341) on each supporting arm (34) respectively obtains readings X1, X2, X3 and X4;

2.2) comparing the reading of each first pressure sensor (341) with a preset first threshold value K, if X1 is more than or equal to K, X2 is more than or equal to K, X3 and X4 is more than or equal to K, stopping the transverse rotation of each supporting arm (34), entering the step 3), and starting a quality confirmation program; otherwise, returning to the step 2.1);

3) the quality confirmation program of the decoration cover (2) comprises the following steps:

3.1) starting;

3.2) the second pressure sensor (342) on each support arm (34) obtains readings G1, G2, G3 and G4, respectively, and then enters step 4), and starts the seamless installation procedure;

4) in the seamless installation program, the following steps are included:

4.1) starting, rotating the end of the supporting arm (34) far away from the shell (31) upwards;

4.2) the second pressure sensor (342) on each support arm (34) obtains readings F1, F2, F3 and F4, respectively;

4.3) comparing the reading of each second pressure sensor (342) with a preset second threshold value N, and if the condition that F1-G1 is more than or equal to N, F2-G2 is more than or equal to N, F3-G3 or F4-G4 is more than or equal to N is met, stopping the longitudinal rotation of the supporting arm (34) and entering the step 4.4); otherwise, returning to the step 4.1);

4.4) extending each link (35) to enable one end of each support arm (34) far away from the shell (31) to continue rotating upwards, wherein each support arm (34) is supported at the flanging (22) of the decorative cover (2), and the second pressure sensor (342) on each support arm (34) obtains refreshed readings F1, F2, F3 and F4 respectively;

4.5) if F1-G1 is satisfied, the corresponding connecting rod (35) stops extending, the installation procedure is finished, otherwise, the step 4.4) is returned; if F2-G2 is satisfied, the corresponding connecting rod (35) stops extending, the installation procedure is finished, and if not, the step 4.4) is returned; if F3-G3 is satisfied, the corresponding connecting rod (35) stops extending, the installation procedure is finished, and if not, the step 4.4) is returned; if F4-G4 ≧ N is satisfied, the corresponding link (35) stops elongating, the installation procedure is ended, otherwise, go back to step 4.4).

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