CN111006267B

CN111006267B - Decoration cover mounting device and range hood applying same

Info

Publication number: CN111006267B
Application number: CN202010003781.5A
Authority: CN
Inventors: 徐烽; 袁柯铭
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2021-10-01
Anticipated expiration: 2040-01-03
Also published as: CN111006267A

Abstract

The invention discloses a decorative cover mounting device, which is characterized in that: including drive arrangement, transmission and connecting rod subassembly, transmission includes by drive arrangement drive pivoted bent axle, the connecting rod subassembly includes the connecting rod that is connected with the bent axle, is made elevating movement by the bent axle drive, the ascending both ends of connecting rod length direction are used for connecing with decorating the cover. A range hood applying the mounting device is also disclosed. 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 rotatable bent axle to support and lifting connecting rod, and then the lifting decorates the installation that the cover accomplished the decoration cover, can adapt to the decoration cover of split type and integral type, the commonality is wider, and the dismouting is decorated cover convenient and fast, and the installation is simple reliable, can realize decorating cover automatic rising and falling and adjust 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 firstly, and the disassembly is inconvenient.

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 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: including drive arrangement, transmission and connecting rod subassembly, transmission includes by drive arrangement drive pivoted bent axle, the connecting rod subassembly includes the connecting rod that is connected with the bent axle, is made elevating movement by the bent axle drive, the ascending both ends of connecting rod length direction are used for connecing with decorating the cover.

Preferably, for the convenience of the rotation of the crankshaft drives the connecting rod to ascend and descend, the connecting rod assembly further comprises a limiting slide block, a first sliding groove is formed in the connecting rod and extends along the length direction of the connecting rod, the limiting slide block partially penetrates through the first sliding groove and can be connected with the crankshaft in a rotating mode, and the limiting slide block is connected with the first sliding groove in a sliding mode.

According to one aspect of the invention, the transmission device further comprises a stepped shaft, the stepped shaft comprises a first connecting section and a flat second connecting section, the first connecting section is rotatably connected with the crankshaft and is arranged in the end portion, far away from the driving device, of the crankshaft and is arranged coaxially with the corresponding end portion, the limiting slide block comprises a limiting section and a flat third connecting section, the third connecting section penetrates through the first sliding groove and is fixedly connected with the second connecting section, the limiting sections of the crankshaft and the limiting slide block are respectively located on two sides of the first sliding groove, and the limiting section can be abutted to the position, located on the periphery of the first sliding groove, of the connecting rod.

According to another aspect of the invention, the limiting slide block comprises a cylindrical limiting section and a third connecting section, the third connecting section penetrates through the first sliding groove and is connected with the crankshaft in a rotating mode, the third connecting section is arranged in the end portion, far away from the driving device, of the crankshaft and is arranged coaxially with the corresponding end portion, and the limiting section can be abutted to the position, located on the periphery of the first sliding groove, of the connecting rod.

In order to facilitate adaptation to the decorative covers of different width dimensions, the connecting rod assembly further comprises an adjusting rod which is disposed at least one end portion in the length direction of the connecting rod and can slide relative to the connecting rod, so that the total length of the connecting rod and the adjusting rod can be adjusted.

According to another aspect of the invention, the connecting rod assembly further comprises a hook, one end of the hook is rotatably connected with the crankshaft, and the other end of the hook is movably connected with the connecting rod.

Preferably, the other end of the hook is rotatably connected with a first connecting seat, a second connecting seat is arranged on the connecting rod, and the first connecting seat and the second connecting seat are connected through a universal joint.

Preferably, the crankshaft is configured such that it comprises a first transverse shaft connected to the drive, a longitudinal shaft extending in the longitudinal direction from the end of the first transverse shaft remote from the drive, and a second transverse shaft extending in the transverse direction from the end of the longitudinal shaft remote from the first transverse shaft.

In order to adjust the rotating radius of the crankshaft and reduce the installation precision requirement of the installation device, the longitudinal shaft comprises a first telescopic shaft and a second telescopic shaft, and the second telescopic shaft is sleeved outside the first telescopic shaft to realize sliding connection.

The first technical solution adopted by the present invention to solve the second technical problem is: 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 connecting rod extends in the left-right direction, flanges are formed on the inner sides of the tops of the left side wall and the right side wall respectively, and the connecting rod or the adjusting rod is fixedly connected with the flanges.

The second technical solution adopted by the present invention to solve the second technical problem is: 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 connecting rod extends in the left-right direction, flanges are formed on the inner sides of the tops of the left side wall and the right side wall respectively, a second sliding groove extending forwards and backwards is formed in each flange, and the two ends of the connecting rod are connected through the second sliding grooves through screws respectively.

Compared with the prior art, the invention has the advantages that: the installation device is separated from the decoration cover and is independently arranged, the rotatable crankshaft is used for supporting and lifting the connecting rod so as to lift the decoration cover to complete the installation of the decoration cover, the decoration cover can adapt to split type and integrated decoration covers, the universality is wider, the decoration cover can be conveniently and quickly disassembled and assembled, the installation is simple and reliable, the automatic lifting adjustment of the decoration cover can be realized, and the seamless connection between the decoration cover and a suspended ceiling can be realized; the adjusting rod connected with the connecting rod is adopted, the total length of the adjusting rod and the connecting rod can be adjusted, and the decorative cover can be adapted to decorative covers with different width sizes, so that the application range is wide; the hook connected with the crankshaft is connected with the universal joint of the connecting rod, the end part of the connecting rod is connected with the flanging of the decorative cover in a sliding way, the decorative covers with different width sizes can be adapted through the rotation of the connecting rod, and the application range is wide; 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 first embodiment of a range hood according to the present invention before installation;

FIG. 2 is a sectional view of the base and the decorative cover before installation of the first embodiment of the range hood of the present invention;

fig. 3 is a schematic view of a decorative cover mounting device of a range hood according to a first embodiment of the present invention;

fig. 4 is a schematic partially exploded view of a mounting device for a decorative cover of a range hood according to a first embodiment of the present invention;

fig. 5 is a schematic view of a partially exploded structure of a mounting device for a decorative cover of a range hood according to a first embodiment of the present invention;

FIG. 6 is a schematic view of an initial state of the first embodiment of the range hood;

FIG. 7 is a sectional view of the first embodiment of the range hood according to the present invention showing the initial state of the decoration cover and the installation base (before the connection of the connection rod);

fig. 8 is a sectional view of the initial state of the installation of the decorative cover and the installation base of the range hood according to the first embodiment of the present invention (after the connection rod is connected);

fig. 9 is a schematic view of the state of the range hood in the installation of the decoration cover according to the first embodiment of the present invention;

FIG. 10 is a sectional view of the range hood according to the first embodiment of the present invention showing the state in which the decoration cover and the installation base are installed;

fig. 11 is a schematic view showing a state where the installation of the decorative cover of the range hood according to the first embodiment of the present invention is completed;

fig. 12 is a sectional view showing a state where the installation of the decoration cover and the installation base of the range hood according to the first embodiment of the present invention is completed;

FIG. 13 is a schematic view of a second embodiment of a range hood in accordance with the present invention before installation;

FIG. 14 is a sectional view of a second embodiment of the range hood of the present invention showing a decorative cover before installation and a base for installation;

fig. 15 is a schematic view of a decorative cover mounting device of a second embodiment of the range hood of the present invention;

fig. 16 is an exploded view of a decorative cover mounting device of a second embodiment of the range hood of the present invention;

FIG. 17 is a schematic view of an initial installation state of a decorative cover of a second embodiment of the range hood of the present invention;

fig. 18 is a front view of the second embodiment of the range hood of the present invention showing the initial state of the decorative cover and the mounting base (before the connecting rod rotates);

fig. 19 is a front view of the second embodiment of the range hood of the present invention showing the initial state of the decoration cover and the installation base (after the connection rod is rotated);

fig. 20 is a schematic view showing a state where the installation of the decorative cover of the range hood in the second embodiment of the present invention is completed;

FIG. 21 is a front view of a second embodiment of the range hood of the present invention showing the assembled state of the decorative cover and the mounting base;

fig. 22 is a schematic view showing a state of adjusting the position of a hook of the decorative cover mounting device of the range hood according to the second embodiment of the present invention;

fig. 23 is a schematic view showing a rotation state of a connecting rod of a decorative cover mounting device according to a second embodiment of the range hood of the present invention;

fig. 24 is a schematic view of a decorative cover mounting device of a range hood according to a third 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.

Example one

Referring to fig. 1, 2 and 7, a range hood includes a range hood body 1, a decoration cover 2 and a mounting device 3 for the decoration cover, wherein the decoration cover 2 is disposed on the upper portion of the range hood body 1 and can be longitudinally pulled relative to the range hood body 1. The decorative cover 2 includes a cover body 21 with an open rear side, 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, the tops of the left and right side walls of the cover body 21 are respectively provided with a flange 22, and the flange 22 is formed by extending a certain distance from the top of the left side wall 212 or the right side wall 213 of the cover body 21 to the inside of the cover body 21. The flange 22 may also be formed by extending the top of the left sidewall 212 or the right sidewall 213 of the cover 21 downward for a certain distance and then extending the top of the left sidewall or the right sidewall into the cover 21. At this time, the distance between the flange 22 and the top end of the cover 21 is S.

The mounting device 3 is used to mount the trim cover 2 to an external mounting base (wall surface 100) and enables seamless mounting with the ceiling 200.

Referring to fig. 3 to 5, the mounting device 3 includes a driving device 31, a transmission device 32, and a link rod assembly 33. The driving device 31 is preferably a motor in the present embodiment, and may be another driving device capable of outputting rotation. After the power is supplied to the driving device 31, the driving device can interact with the control device through wired/wireless transmission, and the control device issues a motor forward/reverse rotation command, so that the lifting of the decorative cover 2 is realized. The control device can be a controller of the range hood or an independent controller. The driving device 31 is provided with a mounting bracket 34 for mounting the driving device 31 to the wall surface 100. The output shaft of the drive device 31 extends forward.

The transmission device 32 comprises a crankshaft 321, a stepped shaft 322, a limit cover 323 and a pin 324, wherein the crankshaft 321 is connected with an output shaft of the driving device 31 through a coupling 325 so as to be rotated around the connection part under the driving of the driving device 31, so that the motion track of one end of the crankshaft 321 far away from the driving device 31 is circular. In the present embodiment, the crankshaft 321 includes a first transverse shaft 3211 connected to the driving device 31, a longitudinal shaft 3212 extending in the longitudinal direction from the end of the first transverse shaft 3211 remote from the driving device 31, and a second transverse shaft 3213 extending in the transverse direction from the end of the longitudinal shaft 3212 remote from the first transverse shaft 3211, wherein the first transverse shaft 3211 extends forward from the connection with the driving device 31, and the second transverse shaft 3213 extends forward from the end of the longitudinal shaft 3212. The first lateral axle 3211, the longitudinal axle 3212 and the second lateral axle 3213 may be integrally formed, and the joints thereof are smoothly transitioned.

The stepped shaft 322 includes a first connecting section 3221 disposed inside the second transverse shaft 3213 and a second connecting section 3222 extending outside the second transverse shaft 3213, wherein the first connecting section 3221 may be cylindrical, a connecting groove 3214 is disposed inside the second transverse shaft 3213, the connecting groove 3214 is formed by recessing an end surface of the second transverse shaft 3213 away from the longitudinal shaft 3212 in a direction toward the longitudinal shaft 3212, the connecting groove 3214 is also cylindrical, and the first connecting section 3221 and the second transverse shaft 3213 are coaxially disposed. The second connecting section 3222 may be flat (flat in the vertical direction), smaller than the first connecting section 3221, and has a first connecting hole 3223 formed therein. The limiting cover 323 is disposed at an end of the second transverse shaft 3213 away from the longitudinal shaft 3212 to prevent the stepped shaft 322 from disengaging from the crankshaft 321.

The connecting rod assembly 33 includes a connecting rod 331, an adjusting rod 332, and a limit slider 333. The connecting rod 331 extends in the left-right direction, the connecting rod 331 is provided with a first slide slot 3311, and the first slide slot 3311 extends in the left-right direction in the same manner as the length direction of the connecting rod 331. The limiting slide block 333 includes a limiting section 3331 and a third connecting section 3332, and the third connecting section 3332 is provided with a second connecting hole 3333. The height of the limiting section 3331 is greater than the first sliding groove 3311 of the connecting rod 331, and the limiting section can be abutted against the connecting rod 331 at the peripheral position of the first sliding groove 3311, so that the crankshaft 321 is prevented from being separated from the connecting rod 331 after being connected with the limiting slide block 333. The third connecting section 3332, which is also flat, is rearwardly disposed through the first slide slot 3311 to be located above and below the second connecting section 3222 of the stepped shaft 322, the first connecting hole 3223 of the stepped shaft 322 is aligned with the second connecting hole 3333 of the position restricting slider 333, and the stepped shaft 322 of the actuator 32 and the position restricting slider 333 of the link assembly 33 are connected by the pin 324 passing through the first connecting hole 32223 and the second connecting hole 3333. The third connecting section 3332 of the limit slider 333 serves as a slider that can slide along the first slide groove 3311 of the connecting rod 331. The stepped shaft 322 is located at the rear side of the connecting rod 331, and the limit slider 333 is connected to the stepped shaft 322 by passing through the connecting rod 331 from the front side to the rear side.

The stepped shaft 322 is inserted into the crankshaft 321 to be coaxially matched with the crankshaft 321, so that the stepped shaft 322 and the crankshaft 321 can rotate relatively. In the process that the decorative cover 2 rises, that is, in the process that the crankshaft 321 rotates, the crankshaft 321 can rotate relative to the stepped shaft 322, so that the stepped shaft 322 and the limiting slider 333 connected with the stepped shaft 322 always keep the position of the rotating direction unchanged, that is, the pin 324 is always in a certain specific direction (vertical direction in the embodiment), the pin 324 is convenient to disassemble and assemble and is not easy to loosen, and the limiting slider 333 can realize translation in the first chute 3311, so that the sliding effect is good.

The adjusting lever 332 and the connecting lever 331 extend in the same direction and can slide with respect to the connecting lever 331 to adjust the total length of the connecting lever 331 and the adjusting lever 332. In the present embodiment, the connecting rod 331 and the adjusting rod 332 are both U-shaped with an open front in longitudinal section. At least one end of the connecting rod 331 is provided with an adjusting rod 332, the end of the connecting rod 331, at which the adjusting rod 332 is provided, is provided with a third connecting hole 3312, the adjusting rod 332 is provided with a third sliding slot 3321, and the third sliding slot 3321 extends in the left-right direction, that is, the length direction of the connecting rod 331 and the adjusting rod 332 is consistent. In the present embodiment, the adjustment lever 332 is provided only at one end of the connection lever 331. Alternatively, the third sliding groove 3321 may be opened on the connecting rod 331.

The connecting rod assembly 33 further includes a screw 336, the screw 336 is disposed at an end of the connecting rod 331 (the end having no adjusting rod 332) or a portion of the adjusting rod 332 located outside the connecting rod 331, and the screw 336 partially penetrates the connecting rod 331 or the adjusting rod 332 from top to bottom so as to be engaged with the flange 22 of the trim cover 2. Each flange 22 of the decorative cover 2 is provided with a screw hole 221, and a screw 336 can pass through the screw hole 221 so as to connect the connecting rod assembly 33 with the decorative cover 2, so that the connecting rod assembly can be prevented from falling off in the installation process of the decorative cover 2 and the use process after the installation is finished.

The connecting rod assembly 33 further includes a bolt 334 and a nut 335, the adjusting rod 332 is pulled to a desired position in the longitudinal direction with respect to the connecting rod 331, two screws 336 can be coupled to the corresponding flanges 22 of the trim cover 2, and then the bolt 334 passes through the third sliding slot 3321 from the front side of the adjusting rod 332 and is tightened by the nut 335 to fix the adjusting rod 332 with respect to the connecting rod 331. The bolt 334 may be also screwed with the nut 335 through the third sliding slot 3321 from the rear side of the adjustment lever 332. Thereby, the mounting device 3 can be adapted to trim covers 2 of different width dimensions.

Referring again to fig. 1 and 2, before the trim cover 2 is installed, the installation device 3 is first fixed to the wall surface 100, so that the screws can be fixed to the wall surface 100 through the fixing brackets 34. At this time, a distance between the center of the coupling 325 and the bottom surface of the suspended ceiling 200 is h, a rotation radius of the crankshaft 321 (length of the longitudinal shaft 3212) is L, and h-S < L is satisfied.

Referring to fig. 6 to 8 again, the total length of the connecting rod 331 and the adjusting rod 332 is adjusted to fit the width of the currently required trim cover 2, and then the connecting rod assembly 33 and the trim cover 2 are fixed by the screw 336; then, the trim cover 2 is lifted up so that the first runner 3311 of the connecting bar 331 is slightly higher than the stepped shaft 322; the second connecting section 3332 of the position-limiting slider 333 is passed through the first sliding slot 3311 from front to rear, and the position thereof is adjusted until the second connecting hole 3333 thereof is aligned with the first connecting hole 3223 of the stepped shaft 322, and the pin 324 is passed through the two connecting holes from top to bottom to connect the position-limiting slider 333 and the stepped shaft 322, in which the longitudinal shaft 3212 of the crankshaft 321 is in a state of extending downward from the end of the first transverse shaft 3211, as shown in fig. 9 and 10.

Referring to fig. 11 and 12 again, the driving device 31 is started to drive the crankshaft 321 to rotate, and due to the fixed connection between the connecting rod 331 and the decoration cover 2, the crankshaft 321 is limited by the first sliding slot 3311, and drives the connecting rod 331 to translate upwards while sliding relative to the first sliding slot 3311, so that the decoration cover 2 translates upwards until making seamless contact with the ceiling 200, thereby realizing seamless installation of the decoration cover 2.

Example two

Referring to fig. 13 to 16, in the present embodiment, the difference from the first embodiment is that the connecting rod assembly 33 only includes a connecting rod 331 and a hook 337, the hook 337 connects the connecting rod 331 and the crankshaft 321 of the transmission device 32, one end of the hook 337 is sleeved on the second transverse shaft 3213 of the crankshaft 321, the crankshaft 321 is bent at the end of the second transverse shaft 3213 to prevent the hook 337 from sliding out of the crankshaft 321, and thus the hook 337 is rotatably connected with respect to the crankshaft 321. The other end of couple 337 rotates and is provided with first connection seat 338, is provided with spherical or spherical crown shape's joint spare 339 on the first connection seat 338, and connecting rod 331 relevant position is provided with second connecting seat 3313, is formed with joint groove 3314 on the second connecting seat 3313, and the shape, the size and the joint spare 339 adaptation of joint groove 3314 can realize in joint groove 3314 that the connection couple 337 and the connecting rod 331 of couple 337 and connecting rod 331 are connected similarly to the structure of universal joint with joint spare 339 card 339.

The hook 337 and the connecting rod 331 can be movably connected in other ways, as long as the hook 337 can rotate on a vertical plane relative to the first connecting seat 338 in the installed state, and the first connecting seat 338 can rotate on a horizontal plane relative to the connecting rod 331, that is, as long as the above two degrees of freedom between the hook 337 and the connecting rod 331 are provided. If the universal joint is replaced by a universal pin, the hook 337 and the connecting rod 331 are directly connected by the universal joint, if the first connecting seat 338 is not used.

In addition, the longitudinal shaft 3212 includes a first telescopic shaft 32121 and a second telescopic shaft 32122, the second telescopic shaft 32122 is sleeved outside the first telescopic shaft 32121, a locking hole 32123 is formed in the second telescopic shaft 32122, a locking chute 32124 is formed in the first telescopic shaft 32121, and after the first telescopic shaft 32121 and the second telescopic shaft 32122 are stretched to the right position, the locking nut 32125 can pass through the locking hole 32123 to abut against the locking chute 32124 to lock the first telescopic shaft 32121 and the second telescopic shaft 32122, see fig. 20 and 22, which is a change of the longitudinal shaft 3212 before and after stretching. Therefore, the length of the longitudinal shaft 3212 can be adjusted, the position of the hook 337 can be changed, the value range of the rotating radius L of the crankshaft 321 is wider, and the requirement on the installation precision of the installation device 3 is further reduced.

Referring to fig. 17 again, each of the flanges 22 is provided with a second sliding groove 221 extending forward and backward, two ends of the connecting rod 331 respectively penetrate through the second sliding grooves 221 to be connected through screws 336, and the two ends of the connecting rod 331 can rotate relative to the trim cover 2 by loosening the screws 336, so that the connecting rod 331 can be connected with the trim cover 2 through rotation of the connecting rod 331 when being installed, and can also be adapted to trim covers 2 of different width sizes, see fig. 23, and dotted lines show the connecting rod 331 after rotation.

Referring to fig. 13 and 14, before the trim cover 2 is installed, the installation device 3 is first fixed to the wall surface 100, so that the screws can be fixed to the wall surface 100 through the fixing brackets 34. At this time, the hook 337 vertically extends downward, a distance between the center of the coupling 325 and the bottom surface of the suspended ceiling 200 is h, a rotation radius of the crankshaft 321 (a length of the longitudinal shaft 3212) is L, and h-S < L is satisfied.

Referring again to fig. 18, the driving device 31 is started, and the crankshaft 321 is driven to rotate, so that the hook 337 extends vertically upward, and the trim cover 2 is lifted upward to a proper height.

Referring again to fig. 17 and 19, the connecting bar 331 is rotated such that both ends of the connecting bar 331 correspond to the second sliding grooves 221 of the flanges 22, and the connecting bar 331 and the trim cover 2 are coupled by the screws 336 through the connecting bar 331 and the second sliding grooves 221.

Referring to fig. 20 and 21 again, the crankshaft 321 continues to rotate, and due to the rotational connection between the first connecting seat 338 and the hook 337 and the fixed connection between the connecting rod 331 and the decorative cover 2, the rotation of the crankshaft 321 drives the connecting rod 331 to translate upwards, and further drives the decorative cover 2 to translate upwards until the connecting rod is in seamless contact with the ceiling 200, so that the seamless installation of the decorative cover 2 is realized.

EXAMPLE III

Referring to fig. 24, in the present embodiment, the difference from the first embodiment is that the stepped shaft 322 is omitted, so that the limit slider 333 is directly rotatably connected to the crankshaft 321, the limit section 3331 and the third connecting section 3332 of the limit slider 333 are cylindrical coaxially arranged, in which a smaller-sized portion is rotatably connected to the end of the second transverse shaft 3213 of the crankshaft 321 through the first chute 3311, and the third connecting section 3332 is coaxially disposed with the second transverse shaft 3213. A portion having a size larger than the first chute 3311 and the crankshaft 321 are respectively located at both sides of the first chute 3311, thereby achieving sliding of the crankshaft 321 with respect to the connecting rod 331.

The mounting device 3 can adapt to split type and integrated type decorative covers, and has wider universality. Cover 2 convenient and fast is decorated in the dismouting, and the installation is simple reliable, can realize decorating cover 2 automatic rising and falling and adjust to can realize decorating cover 2 and furred ceiling 200 seamless connection.

Claims

1. The utility model provides a mounting device of range hood decorative cover which characterized in that: including drive arrangement (31), transmission (32) and connecting rod subassembly (33), transmission (32) include by drive arrangement (31) drive pivoted bent axle (321), connecting rod subassembly (33) including be connected with bent axle (321), by bent axle (321) drive make elevating movement's connecting rod (331), connecting rod (331) length direction is ascending both ends be used for being connected with decorating cover (2).

2. The mounting device of the range hood trim according to claim 1, wherein: the connecting rod component (33) further comprises a limiting slide block (333), a first sliding groove (3311) is formed in the connecting rod (331), the first sliding groove (3311) extends along the length direction of the connecting rod (331), the limiting slide block (333) partially penetrates through the first sliding groove (3311) and can be rotatably connected with the crankshaft (321), and the limiting slide block (333) is in sliding connection with the first sliding groove (3311).

3. The mounting device of the range hood trim according to claim 2, wherein: the transmission device (32) further comprises a stepped shaft (322), the stepped shaft (322) comprises a first connecting section (3221) and a flat second connecting section (3222), the first connecting section (3221) is arranged in the end portion, far away from the driving device (31), of the crankshaft (321) and is coaxially arranged with the corresponding end portion, the limiting sliding block (333) comprises a limiting section (3331) and a flat third connecting section (3332), the third connecting section (3332) penetrates through the first sliding groove (3311) and is fixedly connected with the second connecting section (3222), the limiting sections (3331) of the crankshaft (321) and the limiting sliding block (333) are respectively located on two sides of the first sliding groove (3311), and the limiting section (3331) can abut against the connecting rod (331) at the position where the connecting rod (331) is located on the periphery of the first sliding groove (3311).

4. The mounting device of the range hood trim according to claim 2, wherein: spacing slider (333) are including being columniform spacing section (3331) and third linkage segment (3332) respectively, third linkage segment (3332) pass first spout (3311) and rotate with bent axle (321) and be connected, in bent axle (321) keep away from drive arrangement (31) tip was placed in to third linkage segment (3332) and with the coaxial setting of this corresponding tip, spacing section (3331) can be located the peripheral position butt of first spout (3311) with connecting rod (331).

5. The mounting device of the range hood trim cover according to any one of claims 1 to 4, wherein: the connecting rod assembly (33) further comprises an adjusting rod (332), wherein the adjusting rod (332) is arranged at least one end part of the connecting rod (331) in the length direction and can slide relative to the connecting rod (331), so that the total length of the connecting rod (331) and the adjusting rod (332) can be adjusted.

6. The mounting device of the range hood trim according to claim 1, wherein: the connecting rod assembly (33) further comprises a hook (337), one end of the hook (337) is rotatably connected with the crankshaft (321), and the other end of the hook (337) is movably connected with the connecting rod (331).

7. The mounting device of the range hood trim according to claim 6, wherein: the other end of couple (337) rotates and is connected with first connecting seat (338), be provided with second connecting seat (3313) on connecting rod (331), connect through the universal joint between first connecting seat (338) and second connecting seat (3313).

8. The mounting device of the range hood trim according to claim 1, wherein: the crankshaft (321) comprises a first transverse shaft (3211) connected to the drive (31), a longitudinal shaft (3212) extending in the longitudinal direction from the end of the first transverse shaft (3211) remote from the drive (31), and a second transverse shaft (3213) extending in the transverse direction from the end of the longitudinal shaft (3212) remote from the first transverse shaft (3211).

9. The mounting device of the range hood trim according to claim 8, wherein: the longitudinal shaft (3212) comprises a first telescopic shaft (32121) and a second telescopic shaft (32122), and the second telescopic shaft (32122) is sleeved outside the first telescopic shaft (32121) to realize sliding connection.

10. A range hood applying the mounting device of range hood trim cover according to any one of claims 1 to 5, 8 or 9, comprising a trim cover (2), the trim 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 connecting rod (331) extends in the left-right direction, flanges (22) are formed on the inner sides of the tops of the left side wall (212) and the right side wall (213) respectively, and the connecting rod (331) or the adjusting rod (332) is fixedly connected with the flanges (22).

11. A range hood applying the mounting device of range hood trim according to claim 6 or 7, comprising a trim cover (2), the trim 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 connecting rod (331) extends in the left-right direction, flanges (22) are formed on the inner sides of the tops of the left side wall (212) and the right side wall (213) respectively, a second sliding groove (221) extending forwards and backwards is formed in each flange (22), and two ends of the connecting rod (331) penetrate through the second sliding grooves (221) through screws (336) to be connected.