Range hood

Abstract

The present application relates to a kind of range hood, the bottom of the shell is equipped with first mounting seat and second mounting seat respectively in left and right sides, oil cup has rotating connection end and locking connection end, the rotating connection end of oil cup is rotatably connected on second mounting seat around vertical axis, and it has at least first state and second state with the change of its relative shell rotating position: in first state, locking connection end is connected with first mounting seat, rotating connection end is not detachable relative second mounting seat, and oil cup is integrated in the bottom of shell;In second state, locking connection end is separated from first mounting seat, and rotating connection end can be detachable relative second mounting seat, and oil cup is integrated from the bottom of shell to extend forward.Oil cup is rotated forward after rotating around rotating connection end, and oil cup is extended forward, and oil inside oil cup is convenient to see, and after oil cup is rotated to set angle, the rotating connection end of oil cup can be detached from second mounting seat, so that oil cup can be conveniently removed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, in particular to a range hood. BACKGROUND

[0002] A range hood is a common kitchen appliance. The range hood works by using the principle of fluid dynamics. It generates a negative pressure suction force through a centrifugal fan installed inside the range hood, which sucks the oil fume below the range hood into the centrifugal fan, accelerates it, and then guides it to be discharged outdoors, thereby purifying the kitchen environment. During the process of discharging the oil fume flow, most of the oil is separated out, so an oil collecting cup is usually installed at the bottom of the smoke collecting hood of the range hood to collect the separated oil.

[0003] Currently, there are several ways to check the oil amount in the oil cup of the range hood, but each has its own shortcomings: one is to directly disassemble the oil cup to check, which is very inconvenient. The second is to set a transparent plastic area in the middle of the oil cup for users to check, but the display effect is not obvious, and users need to tilt their heads and necks to check. In addition, the transparent plastic in the middle is in contact with oil stains for a long time, which can easily turn yellow and dark, affecting the user's judgment. The third is to add a sensor to the oil cup to detect whether the oil amount has reached the warning line, but the addition of the sensor increases the production cost. On the other hand, the sensor is contaminated by oil fume, which not only easily causes recognition errors, but also has the risk of damage over time. The oil cup structure and the range hood applying the same disclosed in application No. 202222494762.4 address this issue.

[0004] The installation and disassembly of the oil cup of the existing range hood are also relatively inconvenient. Users need to hold one end with both hands, align the respective grooves, and then install and disassemble. When one side is tilted, installation and disassembly become difficult, especially when disassembling an oil cup full of oil stains, which is very easy to tip and contaminate the oil stains, reducing the user's experience. When installing and disassembling the oil cup, the user needs to tilt his head and neck to see if the oil cup is inserted into the specified groove on both sides, which makes installation very inconvenient. When installing and disassembling the oil cup of some models (e.g. new European style, side suction type), the head is very easy to touch the range hood and contaminate the oil stains, which greatly affects the user's experience and mood.

[0005] Therefore, the existing range hood needs further improvement. SUMMARY

[0006] The first technical problem solved by the present application is to provide a range hood that allows users to clearly and intuitively view the oil amount in the oil cup, in view of the current status of the prior art.

[0007] The second technical problem to be solved by the present application is to provide a range hood with a convenient-to-disassemble oil cup in view of the prior art.

[0008] The present application solves any of the first technical problem and the second technical problem by employing the technical solution of a range hood comprising:

[0009] A casing;

[0010] An oil cup in the shape of a long strip is arranged at the bottom of the casing;

[0011] The bottom of the casing is provided with a first mounting seat and a second mounting seat on the left and right sides, respectively, and the length direction of the oil cup has two ends, which are a rotating connection end and a locking connection end, respectively.

[0012] In the first state, the locking connection end is connected to the first mounting seat, the rotating connection end cannot be detached from the second mounting seat, and the oil cup is entirely folded in the bottom of the casing;

[0013] In the second state, the locking connection end is disconnected from the first mounting seat, and the rotating connection end can be detached from the second mounting seat, and the oil cup extends forward from the bottom of the casing.

[0014] Since the rotating connection end of the oil cup is connected to the first mounting seat around a vertical axis, when the oil cup rotates forward around the rotating connection end, the oil cup extends forward, and the oil inside the oil cup is easily visible.

[0015] In order to simplify the processing of the oil cup and facilitate the rotation limiting and locking of the oil cup, the top of the locking connection end and the top of the rotating connection end of the oil cup are respectively provided with a first insert piece and a second insert piece extending forward and backward, a slot extending forward and backward is defined on the first mounting seat or between the first mounting seat and the casing, the second mounting seat is provided with a rotation limiting shaft extending vertically, the second insert piece is provided with a limiting hole with an open side, and the rotation limiting shaft can slide into the limiting hole through the open side and be rotationally limited in the limiting hole.

[0016] As an improvement, the circumferential wall of the rotation limiting shaft comprises two opposite limiting planes and two rotating arc surfaces respectively connected between the two limiting planes, and the side of the limiting hole is an opening with a width smaller than the diameter of the main body of the limiting hole;

[0017] In the first state, the first tab is inserted into the slot, and the limiting plane of the rotation limiting shaft is opposite to the opening of the limiting hole;

[0018] In the second state, the first tab is withdrawn from the slot, and the rotating arc surface of the rotation limiting shaft is opposite to the opening of the limiting hole.

[0019] The above structure design can only install and remove the oil cup at a specific position, and the oil cup cannot be installed and removed at any other position due to the size relationship between the opening and the rotation limiting shaft, thereby ensuring the firmness of the oil cup installation.

[0020] As an improvement, the second mounting seat is a U-shaped bracket with an opening facing forward, comprising a first plate body and a second plate body opposite to each other, and the rotation limiting shaft extends downward from the first plate body at the upper part of the U-shaped bracket. The second mounting seat adopts a U-shaped bracket structure design, which can effectively support the oil cup and avoid the risk of oil cup slipping.

[0021] In order to better position the oil cup in the U-shaped bracket and further ensure the stability of the rotation of the oil cup around the rotation limiting shaft, one of the top wall of the second plate body of the U-shaped bracket and the bottom wall of the oil cup is provided with a positioning protrusion, and the other is provided with a positioning recess, the positioning protrusion is rotatably arranged in the positioning recess, and the two are vertically opposite to the rotation limiting shaft.

[0022] In order to better meet the operation habit of the user and facilitate the user to install and disassemble the oil cup from the second mounting seat, the oil cup extends in the front-rear direction or the oil cup is inclined forward from the rotating connection end to the locking connection end when the oil cup is in the second state.

[0023] In order to further ensure the firmness of the oil cup after installation and facilitate the user to pick up the unlocked oil cup and rotate to disassemble, the first tab of the oil cup is movably arranged in the slot of the first mounting seat through a pressing type elastic self-locking mechanism, the pressing type elastic self-locking mechanism comprises a sliding member, the sliding member has a locking portion, and during the process of pressing the first tab into or out of the slot by external force, the sliding member can move between the locking position and the unlocking position at a certain distance in the front-rear direction relative to the first mounting seat;

[0024] In the locked position, the locking portion of the sliding member moves towards the locking position of the first insertion piece and forms a locking fit with the locking position to limit the first insertion piece from being pulled out of the insertion slot.

[0025] In the unlocked position, the locking portion of the sliding member moves away from the locking position of the first insertion piece to release the locking of the locking position and allow the first insertion piece to be pulled out of the insertion slot.

[0026] As an improvement, the first mounting base comprises a fixed base and an upper limiting plate detachably connected to the top of the fixed base, the fixed base and the bottom of the cabinet defining the insertion slot, and the upper limiting plate and the fixed base defining a limiting slide for accommodating the sliding member.

[0027] In order to ensure the flexibility and reliability of the locking and locking action between the sliding member and the first insertion piece during the forward and backward sliding of the sliding member, the first insertion piece has a clamping hole as the locking position, and the sliding member comprises a sliding block body and an elastic support arm connected to the sliding block body and capable of swinging to the side, the elastic support arm has a hook portion protruding to the side as the locking portion, and the fixed base is provided with a pressing inclined surface corresponding to the elastic support arm for sliding fit with the main body or the hook portion of the elastic support arm, in the unlocked position, the hook portion of the elastic support arm is separated from the clamping hole of the first insertion piece under the pressing of the pressing inclined surface, and in the locked position, the elastic support arm is reset to the initial position and the hook portion is clamped into the clamping hole of the first insertion piece.

[0028] As an improvement, the elastic support arm extends forward from the sliding block body, the hook portion of the elastic support arm protrudes upward, the main body or the hook portion of the elastic support arm has a protruding column extending to the left or right, and the pressing inclined surface on the fixed base gradually inclines downward from back to front, and the protruding column is slidingly fitted at the bottom of the pressing inclined surface. It is conceivable that the hook portion of the elastic support arm can also protrude downward, left or right, and the pressing inclined surface on the hanger is designed to be inclined accordingly.

[0029] In order to simplify the structure of the pressing type elastic self-locking mechanism, the pressing type elastic self-locking mechanism comprises a pull rod and an elastic member in addition to the sliding member, the sliding block body is provided with a track groove in the shape of a ring, the track groove has a stop portion, the first end of the pull rod is swingably connected to the fixed base, the second end of the pull rod has a limiting protruding portion, the limiting protruding portion is unidirectionally slidingly constrained in the track groove during the forward and backward movement of the sliding member relative to the fixed base, and the elastic member acts on the sliding member and makes the sliding member always have a tendency to move forward.

[0030] When the first insert is inserted into the slot, the second end of the pull rod abuts against the stop portion of the slide, thereby keeping the slide in the locked position;

[0031] When the first insert is withdrawn from the slot, the second end of the pull rod is disengaged from the stop portion of the slide, and the slide is moved to the unlocked position under the action of the elastic member.

[0032] In order to realize the one-way movement of the limiting protrusion of the pull rod along the track groove, the track groove comprises a first guide section, a second guide section, a third guide section and a fourth guide section connected in sequence, the first guide section extends from back to front, the fourth guide section extends from front to back, the first guide section and the fourth guide section have a first limiting step at the joint position for blocking the limiting protrusion of the pull rod from returning from the first guide section to the fourth guide section, the second guide section extends from front to back, the first guide section and the second guide section have a second limiting step at the joint position for blocking the limiting protrusion of the pull rod from returning from the second guide section to the first guide section, the third guide section extends from back to front, the joint position of the second guide section and the third guide section is arranged at an angle to define the stop portion, the second guide section and the third guide section have a third limiting step at the joint position for blocking the limiting protrusion of the pull rod from returning from the third guide section to the second guide section, and the joint position between the third guide section and the second guide section has a fourth limiting step for blocking the limiting protrusion of the pull rod from returning from the fourth guide section to the third guide section.

[0033] In order to avoid interference during the rotation of the first insert around the rotation connection end, the first mounting seat is provided with a clearance opening penetrating the slot on the side away from the second mounting seat; or the first mounting seat defines a clearance opening penetrating the slot between the side away from the second mounting seat and the bottom of the casing.

[0034] Compared with the prior art, the oil cup has the following advantages:

[0035] 1. The oil cup is provided with a press-type elastic self-locking mechanism and a rotating installation limiting structure, so that a user can conveniently and quickly check the oil amount in the oil cup and install and disassemble the oil cup without the need of disassembling any part through a tool, thereby solving the problems of difficulty in checking the oil amount, inconvenience in disassembling and installing the oil cup and possible contamination of oil during the two processes.

[0036] 2. When the oil cup is in the locked position, gently press the locking connection end of the oil cup to unlock it, allowing the oil cup to rotate freely forward. The oil level inside the oil cup is easily visible, and the user can then check the oil level or even disassemble the oil cup for cleaning. At the same time, when the oil cup is in the unlocked position, gently press the locking connection end of the oil cup to lock it, ensuring the secure installation of the oil cup.

[0037] 3. The rotating limit shaft has a special structural design on its peripheral wall (the cross-section is similar to a racetrack). The oil cup can only be removed when it is rotated forward to a specific angle (such as when it is perpendicular to the wall). It cannot be disassembled at any position other than a specific tilt angle to prevent the risk of accidental drop by the user.

[0038] 4. The oil cup can be installed and removed by rotating it forward at a specific angle, which ensures sufficient space for operation and avoids the risk of oil contamination. Attached Figure Description

[0039] Figure 1 This is a three-dimensional structural diagram of a range hood according to an embodiment of the present invention (the oil cup is in the first state);

[0040] Figure 2 This is a three-dimensional structural diagram of the left side portion of the range hood casing according to an embodiment of the present invention, omitting the left side wall;

[0041] Figure 3 This is a three-dimensional structural diagram of the left side of the range hood housing according to an embodiment of the present invention, omitting the left side wall (the locking connection end of the oil cup is in a state of being deflected forward at a certain angle).

[0042] Figure 4 This is a three-dimensional structural diagram of a range hood according to an embodiment of the present invention (the oil cup is in the second state);

[0043] Figure 5 This is a three-dimensional structural diagram of a range hood according to an embodiment of the present invention (the oil cup is in a detached state).

[0044] Figure 6 This is a three-dimensional structural diagram of the oil cup and the second mounting base in a separated state according to an embodiment of the present invention;

[0045] Figure 7 This is an exploded view of the push-type elastic self-locking mechanism of the range hood according to an embodiment of the present invention;

[0046] Figure 8 This is a three-dimensional structural diagram of the slider according to an embodiment of the present invention;

[0047] Figure 9 This is a three-dimensional structural diagram of the fixing base according to an embodiment of the present invention;

[0048] Figure 10 This is a three-dimensional structural diagram of the push-type elastic self-locking mechanism of the range hood according to an embodiment of the present invention (the sliding member is in the locked position). Detailed Implementation

[0049] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0050] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0051] Figures 1-10 A preferred embodiment of the range hood of the present invention is shown. The range hood includes a housing 10 and a centrifugal fan disposed within the housing 10. The housing 10 generally includes a fan frame 11 and a smoke collection hood 12 disposed at the bottom of the fan frame 11. The inner cavity of the fan frame 11 communicates with the inner cavity of the smoke collection hood 12. An air inlet is provided on the front side wall of the smoke collection hood 12, through which external smoke can enter the smoke collection hood 12. The centrifugal fan is disposed within the fan frame 11. When the centrifugal fan operates, it generates negative pressure, and external fumes can be drawn into the smoke collection hood 12 through the air inlet. An oil cup 30 is provided at the bottom of the smoke collection hood 12. The oil cup 30 is an elongated strip extending laterally, used to collect oil stains flowing down from the smoke collection hood 12. The front of the smoke hood 12 is also provided with a smoke baffle 13 that can deflect back and forth relative to the smoke hood 12. The smoke baffle 13 is connected to the main body of the smoke hood 12 via a hinge mechanism. Specifically, it can deflect forward to open the air inlet and deflect backward to block and close the air inlet. The hinge mechanism used to drive the deflection of the smoke baffle 13 can be a conventional hinge mechanism in the prior art, which will not be described in detail here.

[0052] The top of the oil cup 30 is open and it is detachably mounted on the bottom of the housing 10. The two ends of the oil cup 30 along its length are a locking connection end and a rotating connection end, respectively. A first mounting base 2 and a second mounting base 22 are respectively provided on the left and right sides of the bottom of the housing 10, as shown below. Figure 3 and Figure 5As shown, the first mounting seat 2 is located at the bottom left side of the casing 10, and the second mounting seat 22 is located at the bottom right side of the casing 10. The first mounting seat 2 and the bottom of the casing 10 define a slot 200 along the front-rear direction. The first mounting seat 2 and the bottom of the casing 10 further define a clearance opening 202 penetrating the slot 200 at the side away from the second mounting seat 22, i.e., the opening direction of the clearance opening 202 is leftward. Correspondingly, the left top edge of the oil cup 30 has a first tab 31 folded toward the middle position of the oil cup 30, which can be inserted into the slot 200 from front to back to realize the installation of the locking connection end of the oil cup 30, and can be pulled out of the slot 200 to realize the disassembly of the locking connection end of the oil cup 30. The right top edge of the oil cup 30 has a second tab 32 folded toward the middle position of the oil cup 30, and the second tab 32 has a limiting hole 320 with a side opening, and the side opening of the limiting hole 320 is a contraction opening 321 with a width smaller than the diameter of the main body of the limiting hole 320, specifically, the opening direction of the contraction opening 321 of the limiting hole 320 is rightward.

[0053] The rotating connection end of the oil cup 30 is rotatably connected to the second mounting seat 22 around a vertical axis (i.e., the axis of the rotation limiting shaft 23), specifically, the second mounting seat 22 is a U-shaped bracket with an opening facing forward, including a first plate body 221 and a second plate body 222 opposite to each other. The rotation limiting shaft 23 extends downward from the first plate body 221 at the upper portion of the U-shaped bracket by a distance. The peripheral wall of the rotation limiting shaft 23 includes two opposite limiting planes 231 and two rotating arc surfaces 232 connected between the two limiting planes 231, respectively, wherein the distance between the two limiting planes 231 is smaller than the distance between the two rotating arc surfaces 232, i.e., the cross section of the rotation limiting shaft 23 is similar to a racetrack shape. The distance between the two limiting planes 231 is adapted to the width dimension of the contraction opening 321 of the limiting hole 320, and the distance between the two rotating arc surfaces 232 is adapted to the diameter of the limiting hole 320. When installing, the rotating arc surface of the rotation limiting shaft 23 is opposite to the contraction opening 321 of the limiting hole 320, which can be slid into the limiting hole 320. The above structure design can make the oil cup 30 only be installed and removed at a specific position, and at any other position, the oil cup 30 cannot be installed and removed due to the size relationship between the contraction opening 321 and the rotation limiting shaft 23, which ensures the firmness of the installation of the oil cup 30.

[0054] The bottom wall of the oil cup 30 is provided with a downward protruding positioning protrusion 33, the outer wall surface of the positioning protrusion 33 is a smooth transition curved surface, the top wall of the second plate body 222 of the U-shaped support is provided with a downward recessed positioning recess 2220, the inner wall surface of the positioning recess is also a curved surface with a circular arc transition, and thus the positioning protrusion 33 is rotatably arranged in the positioning recess 2220. The positioning protrusion 33 and the positioning recess 2220 are opposite to the rotation limiting shaft 23 in the vertical direction. The positioning protrusion 33 and the positioning recess 2220 are arranged to better position the oil cup 30 in the U-shaped support and further ensure the stability of the rotation of the oil cup 30 around the rotation limiting shaft 23. The second mounting seat 22 adopts a U-shaped support structure design, which can effectively support the oil cup 30 and avoid the risk of the oil cup 30 slipping off.

[0055] During installation, the positioning protrusion 33 at the bottom of the oil cup 30 is correspondingly clamped into the positioning recess 2220 of the second mounting seat 22, and the rotation limiting shaft 23 can be slid into the side opening of the limiting hole 320 and rotationally limited in the limiting hole 320. After the rotation connecting end of the oil cup 30 is assembled in place on the second mounting seat 22, the oil cup 30 can rotate around the rotation limiting shaft 23, and the relative rotation position of the oil cup 30 relative to the case 10 has at least a first state and a second state: in the first state, the first insert piece 31 is inserted into the insertion slot 200 of the first mounting seat 2, the limiting plane 231 of the rotation limiting shaft 23 is opposite to the contraction opening 321 of the limiting hole 320, so that the rotation limiting shaft 23 cannot be pulled out of the contraction opening 321 of the limiting hole 320, the rotation connecting end cannot be detached from the second mounting seat 22, and the oil cup 30 is integrally folded at the bottom of the case 10; in the second state, the first insert piece 31 is pulled out of the insertion slot 200, the locking connecting end is separated from the first mounting seat 2, the locking connecting end of the oil cup 30 is deflected and moved forward until the oil cup 30 is integrally extended in the front-back direction, at this time, the contraction opening 321 of the limiting hole 320 of the oil cup 30 is opposite to the rotation arc surface 232 of the rotation limiting shaft 23, the oil cup 30 is moved forward, the rotation limiting shaft 23 is pulled out of the contraction opening 321 of the limiting hole 320, the rotation connecting end is detached from the second mounting seat 22, and the oil cup 30 is disassembled.

[0056] Since the rotation connecting end of the oil cup 30 is rotationally connected to the first mounting seat 2 around the vertically extending axis, after the oil cup 30 is rotated forward around the rotation connecting end, the oil cup 30 is integrally extended forward, the oil inside the oil cup 30 is easily visible, and after the oil cup 30 is rotated by a certain angle, that is, in the second state, the rotation connecting end of the oil cup 30 can be detached from the second mounting seat 22, so that the oil cup 30 is easily disassembled. The oil cup 30 is installed and disassembled after being rotated forward by a certain angle, which not only ensures enough space for operation, but also avoids the risk of contamination by oil.

[0057] The bottom wall of the slot 200 of the embodiment also has a limiting protrusion 201 protruding towards the inside of the slot 200, the limiting protrusion 201 extends along the left-right direction, and the cross section (vertical section cut along the front-rear direction) is an arc structure gradually protruding upwards from the front-rear sides to the middle part. After the first tab of the oil cup 30 is inserted into the slot 200, the limiting protrusion 201 abuts against the bottom wall of the first tab to ensure the stability of the insertion and installation of the first tab of the oil cup 30, and avoid the problem of shaking or easily falling out of the slot 200.

[0058] The first mounting seat 2 of the embodiment includes a fixed seat 21 and an upper limiting plate 215 located above the right side of the fixed seat 21, and the upper limiting plate 215 is connected to the fixed seat 21 by screws. The first tab of the oil cup 30 is movably arranged in the slot 200 of the first mounting seat 2 by a press-type elastic self-locking mechanism, that is, the user can lock the first tab by pressing the side of the oil cup 30, and can unlock the first tab and pop the oil cup 30 forward by pressing the side of the oil cup 30 again.

[0059] Referring to Figures 7-10 , the press-type elastic self-locking mechanism includes a sliding piece 40, a pull rod 43, and an elastic piece 44.

[0060] During the process of the first tab being pressed into or out of the slot 200 by external force, the sliding piece 40 can move between the upper locking position and the unlocking position which are spaced apart in the front-rear direction. The sliding piece 40 has a locking portion 421, and the first tab of the oil cup 30 has a locking position 310. When the sliding piece 40 moves to the upper locking position, the locking portion 421 of the sliding piece 40 moves towards the locking position 310 of the first tab and forms a locking cooperation with the locking position 310 to limit the first tab from falling out of the slot 200; when the sliding piece 40 moves to the unlocking position, the locking portion 421 of the sliding piece 40 moves away from the locking position 310 of the first tab to release the locking of the locking position 310 and allow the first tab to fall out of the slot 200.

[0061] The sliding piece 40 includes a sliding block body 41 and an elastic support arm 42 connected to the sliding block body 41 and capable of swinging to the side, and the elastic support arm 42 has a hook portion protruding to the side as the locking portion 421. The first tab has a bayonet as the locking position 310, which is a closed hole or a semi-closed opening.

[0062] The upper limiting plate 215 and the fixed seat 21 define a limiting slide channel 214 in which the sliding piece 40 is accommodated. The sliding piece 40 and one of the hangers are provided with a front-rear extending limiting rib 211, and the other is provided with a front-rear extending limiting groove 400. Specifically, refer to Figure 8 and Figure 9The fixed seat 21 has a limiting rib 211 protruding upward, and the bottom of the sliding block body 41 has a limiting groove 400 recessed upward, the limiting rib 211 is slidingly arranged in the limiting groove 400, thereby ensuring the stable sliding of the sliding member 40 relative to the hanger.

[0063] Continuing to refer to Figure 8 The upper portion of the sliding block body 41 is provided with a track groove 410 in the shape of a ring, the front portion of the track groove 410 has a portion recessed rearward from both sides to the middle as a stop portion 419. The first end of the pull rod 43 is swingably connected to the hanger, and the second end of the pull rod 43 has a limiting protrusion 431. Specifically, both ends of the pull rod 43 have downwardly bent hooks, the hook at the first end is rotationally arranged in the insertion hole 213 of the fixed seat 21, and the hook at the second end is constrained in the track groove 410, wherein the second end of the pull rod 43 can slide in one direction along the track groove 410 during the forward and backward movement of the sliding member 40 relative to the hanger. More specifically, the track groove 410 comprises a first guide segment 411, a second guide segment 412, a third guide segment 413 and a fourth guide segment 414 connected in sequence. The first guide segment 411 extends from rear to front, the fourth guide segment 414 extends from front to rear, and the first guide segment 411 and the fourth guide segment 414 have a first limiting step 415 at the joint position for blocking the limiting protrusion 431 of the pull rod from returning from the first guide segment 411 to the fourth guide segment 414. The second guide segment 412 extends from front to rear, and the first guide segment 411 and the second guide segment 412 have a second limiting step 416 at the joint position for blocking the limiting protrusion 431 of the pull rod from returning from the second guide segment 412 to the first guide segment 411. The third guide segment 413 extends from rear to front, and the joint position of the second guide segment 412 and the third guide segment 413 is arranged at an angle to define the stop portion 419, and the second guide segment 412 and the third guide segment 413 have a third limiting step 417 at the joint position for blocking the limiting protrusion 431 of the pull rod from returning from the third guide segment 413 to the second guide segment 412. The joint position between the third guide segment 413 and the second guide segment 412 has a fourth limiting step 418 for blocking the limiting protrusion 431 of the pull rod from returning from the fourth guide segment 414 to the third guide segment 413. The bottom surface of the first guide segment 411 of the track groove 410 gradually rises toward the second guide segment 412, the bottom surface of the second guide segment 412 of the track groove 410 gradually rises toward the third guide segment 413, the bottom surface of the third guide segment 413 of the track groove 410 gradually rises toward the fourth guide segment 414, and the bottom surface of the fourth guide segment 414 of the track groove 410 gradually rises toward the first guide segment 411.

[0064] The elastic member 44 is a tension spring, the first end of the tension spring is connected with the hanger, and the second end is connected with the sliding member 40. Specifically, the tension spring is located on the front side of the sliding block body 41, the front part of the sliding block body 41 is provided with a first connecting column 401 for hanging the first end of the tension spring, and the fixed seat 21 is provided with a second connecting column 212 for hanging the second end of the spring. Under the elastic force of the tension spring, the sliding member 40 always has a tendency to move forward.

[0065] The fixed seat 21 on the hanger is provided with a pressing inclined surface 210 corresponding to the elastic supporting arm 42, which can be slidably matched with the main body or hook part of the elastic supporting arm 42. Specifically, the elastic supporting arm 42 extends forward from the sliding block body 41, the hook part of the elastic supporting arm 42 protrudes upward, the main body or hook part of the elastic supporting arm 42 is provided with a protruding column 422 extending leftward or rightward, and the pressing inclined surface 210 on the hanger gradually inclines downward from back to front, and the protruding column 422 is slidably matched at the bottom of the pressing inclined surface 210.

[0066] During the process that the user presses the left side or the right side of the oil cup 30 and releases, the first tab of the oil cup 30 first drives the sliding member 40 to move backward, and then moves forward by a certain distance under the action of the elastic member 44, the second end of the pull rod 43 is correspondingly unidirectionally moved to the stop portion 419 along the first guide section 411 and the second guide section 412 of the track groove 410, at this time, the sliding member 40 is in the locked position state, and at the same time, the protruding column 422 of the elastic supporting arm 42 of the sliding member 40 also moves backward along the pressing inclined surface 210, wherein the elastic supporting arm 42 is upwardly reset to the initial position, the hook part of the elastic supporting arm 42 is clamped into the first tab, and the locking of the first tab of the oil cup 30 is realized. During the process that the user presses the left side or the right side of the oil cup 30 again and releases, the first tab of the oil cup 30 first drives the sliding member 40 to move backward, and then moves forward under the action of the elastic member 44, the second end of the pull rod 43 is out of the stop portion 419, and then is unidirectionally moved correspondingly along the third guide section 413 and the fourth guide section 414 of the track groove 410, when the sliding member 40 moves forward to the limit position, that is, in the unlocked position state, at the same time, during the process, the protruding column 422 of the elastic supporting arm 42 of the sliding member 40 also moves forward along the pressing inclined surface 210, the elastic supporting arm 42 swings downward against the elastic force of the elastic supporting arm 42 until the hook part of the elastic supporting arm 42 is out of the first tab, the locking of the first tab of the oil cup 30 by the hook part of the elastic supporting arm 42 is released, the tab of the oil cup 30 automatically pops out a distance forward, and the user can conveniently take the oil cup 30.

[0067] The disassembly process of the oil cup 30 of the embodiment is as follows:

[0068] The user holds the right side of the oil cup 30 towards and perpendicular to the range hood (wall), the bottom of the oil cup 30 is in contact with the U-shaped bracket, the rotation limiting shaft 23 gradually penetrates the contraction opening 321 of the second insertion piece 32 of the oil cup 30 and finally reaches the limiting hole 320, at this time the positioning protrusion 33 of the oil cup 30 is clamped into the positioning recess 2220 of the fixing seat of the second mounting seat 22 under the action of the self-weight of the oil cup 30 and can rotate in the positioning recess 2220, at this time the right side positioning and mounting of the oil cup 30 is completed. The user rotates the oil cup 30 so that the left end of the oil cup 30 gradually approaches the first mounting seat 2, when the first insertion piece 31 on the left side of the oil cup 30 is in contact with the sliding piece 40, the sliding piece 40 is pushed to move backward, at this time the tension spring is gradually elongated, the second end of the pull rod 43 moves along the upper locking path of the track groove 410 to reach the stop portion 419, the supporting arm 42 of the sliding piece 40 is reset upward to the initial position, the hook portion of the elastic supporting arm 42 is clamped into the insertion opening of the first insertion piece, the locking of the first insertion piece of the oil cup 30 is achieved, at this time the installation and fixation of the entire oil cup 30 are completed.

[0069] When the user wants to disassemble the oil cup 30, the user only needs to press the left side of the oil cup 30 slightly, the pull rod 43 moves away from the stop portion 419 along the unlocking path of the track groove 410, at this time the sliding piece 40 gradually moves forward under the restoring force of the tension spring, the elastic supporting arm 42 of the sliding piece 40 gradually descends along the abutting inclined surface 210, that is, swings downward until the hook portion of the elastic supporting arm 42 is separated from the insertion opening of the first insertion piece, the locking of the first insertion piece of the oil cup 30 by the hook portion of the elastic supporting arm 42 is released, the elastic piece of the oil cup 30 automatically pops out a distance forward, the user picks up the locking connection end of the oil cup 30, rotates the oil cup 30 in the direction away from the range hood (that is, deflects forward around the rotation limiting shaft 23 as the rotation axis), until the entire oil cup 30 is perpendicular to the range hood (wall), holds the oil cup 30 and pulls it outward, the rotation limiting shaft 23 is separated from the contraction opening 321 of the second insertion piece 32 of the oil cup 30, at this time the oil cup 30 is completely taken out.

Claims

1. A range hood, comprising: a casing (10); an oil cup (30) in the shape of a long strip, arranged on the bottom of the casing (10); characterized in that the bottom of the casing (10) is provided with a first mounting seat (2) and a second mounting seat (22) on the left and right sides respectively, the two ends of the oil cup (30) in the length direction are a rotating connection end and a locking connection end respectively, the rotating connection end of the oil cup (30) is rotatably connected to the second mounting seat (22) around a vertical axis, and has at least a first state and a second state with the change of the rotating position of the second mounting seat (22) relative to the casing (10): in the first state, the locking connection end is connected to the first mounting seat (2), the rotating connection end is not detachable relative to the second mounting seat (22), and the oil cup (30) is entirely folded on the bottom of the casing (10); in the second state, the locking connection end is disconnected from the first mounting seat (2), and the rotating connection end is detachable relative to the second mounting seat (22), and the oil cup (30) extends forward from the bottom of the casing (10) as a whole; the top of the locking connection end and the top of the rotating connection end of the oil cup (30) are respectively provided with a first insertion piece (31) and a second insertion piece (32) extending forward and backward, the first mounting seat (2) or between the first mounting seat (2) and the casing (10) is defined as an insertion slot (200) extending forward and backward, the second mounting seat (22) is provided with a vertical rotating limiting shaft (23), the second insertion piece (32) is provided with a limiting hole (320) with an open side, and the rotating limiting shaft (23) can slide into the limiting hole (320) through the open side of the limiting hole (320) and be rotationally limited in the limiting hole (320); the first insertion piece (31) of the oil cup (30) is movably arranged in the insertion slot (200) of the first mounting seat (2) through a press-type elastic self-locking mechanism, the press-type elastic self-locking mechanism comprises a sliding piece (40), the sliding piece (40) is provided with a locking portion (421), and during the process of the first insertion piece being pressed by external force to be arranged in or withdrawn from the insertion slot (200), the sliding piece (40) can move between a locking position and an unlocking position at a certain distance in the forward and backward direction relative to the first mounting seat (2); in the state that the sliding piece (40) moves to the locking position, the locking portion (421) of the sliding piece (40) moves towards the locking position (310) of the first insertion piece and forms a locking fit with the locking position (310) to limit the first insertion piece from being withdrawn from the insertion slot (200); in the state that the sliding piece (40) moves to the unlocking position, the locking portion (421) of the sliding piece (40) is away from the locking position (310) of the first insertion piece to release the locking of the locking position (310) to allow the first insertion piece to be withdrawn from the insertion slot (200).

2. The hood according to claim 1, characterized in that: The circumferential wall of the rotation limiting shaft (23) comprises two opposite limiting planes (231) and two rotating arc surfaces (232) respectively connected between the two limiting planes (231), and the side of the limiting hole (320) is a contraction opening (321) with a width less than the diameter of the main body of the limiting hole (320); In the first state, the first tab (31) is inserted into the slot (200), and the limiting plane (231) of the rotation limiting shaft (23) is opposite to the contraction opening (321) of the limiting hole (320); In the second state, the first tab (31) is separated from the slot (200), and the rotating arc surface (232) of the rotation limiting shaft (23) is opposite to the contraction opening (321) of the limiting hole (320).

3. The hood according to claim 2, characterized in that: The second mounting seat (22) is a U-shaped support with an opening facing forward, comprising a first plate body (221) and a second plate body (222) opposite to each other, and the rotation limiting shaft (23) extends downward from the first plate body (221) at the upper part of the U-shaped support.

4. The hood according to claim 3, characterized in that: The top wall of the second plate body (222) of the U-shaped support is provided with a positioning protrusion (33), and the other top wall is provided with a positioning recess (2220), the positioning protrusion (33) is rotatably arranged in the positioning recess (2220), and the two are opposite to the rotation limiting shaft (23) in the vertical direction.

5. The hood according to any one of claims 1-4, characterized in that: In the second state of the oil cup (30), the oil cup (30) extends in the front-rear direction or is inclined forward from the rotating connection end to the locking connection end.

6. The hood according to claim 1, characterized in that: The first mounting seat (2) comprises a fixed seat (21) and an upper limiting plate (215) detachably connected to the top of the fixed seat (21), the fixed seat (21) and the bottom of the shell (10) define the slot (200), and the upper limiting plate (215) and the fixed seat (21) define a limiting slide (214) for accommodating the sliding member (40).

7. The hood according to claim 6, characterized in that: The first tab has a bayonet as the locking position (310), the sliding member (40) comprises a sliding block body (41) and an elastic support arm (42) connected to the sliding block body (41) and capable of swinging to the side, the elastic support arm (42) has a hook portion protruding to the side as the locking portion (421), the fixed seat is provided with a pressing inclined surface (210) corresponding to the elastic support arm (42) at a position corresponding to the elastic support arm (42), in the unlocked position state of the sliding member (40), the hook portion of the elastic support arm (42) is separated from the bayonet of the first tab under the pressing of the pressing inclined surface (210), and in the locked position state of the sliding member (40), the elastic support arm (42) is reset to the initial position, and the hook portion is clamped into the bayonet of the first tab.

8. The hood according to claim 7, characterized in that: The elastic supporting arm (42) extends forward from the slider body (41), the hook portion of the elastic supporting arm (42) protrudes upward, the main body or the hook portion of the elastic supporting arm (42) is provided with a protruding column (422) extending leftward or rightward, the pressing inclined surface (210) on the fixed seat gradually inclines downward from back to front, and the protruding column (422) is slidingly fitted at the bottom of the pressing inclined surface (210).

9. The hood according to claim 7, characterized in that: The pressing type elastic self-locking mechanism further comprises a pull rod (43) and an elastic member (44) besides the slider (40), the slider body (41) is provided with a track groove (410) in the form of a ring, the track groove (410) is provided with a stop portion (419), the first end of the pull rod (43) is swingably connected to the fixed seat, the second end of the pull rod (43) is provided with a limiting protruding portion (431), during the forward and backward movement of the slider (40) relative to the fixed seat, the limiting protruding portion (431) is unidirectionally slidingly constrained in the track groove (410), and the elastic member (44) acts on the slider (40) and makes the slider (40) always have a tendency to move forward; When the first insertion sheet is inserted into the insertion slot (200), the second end of the pull rod (43) abuts against the stop portion (419) of the slider (40), so that the slider (40) is kept in the locked position state; When the first insertion sheet is withdrawn from the insertion slot (200), the second end of the pull rod (43) is separated from the stop portion (419) of the slider (40), and the slider (40) is moved to the unlocked position under the action of the elastic member (44).

10. The hood according to claim 9, characterized in that: The track groove (410) comprises a first guide section (411), a second guide section (412), a third guide section (413) and a fourth guide section (414) connected in sequence and circularly, the first guide section (411) extends from back to front, the fourth guide section (414) extends from front to back, the first guide section (411) and the fourth guide section (414) have a first limiting step (415) for blocking the limiting protrusion (431) of the pull rod from returning from the first guide section (411) to the fourth guide section (414) at the joint position, the second guide section (412) extends from front to back, the first guide section (411) and the second guide section (412) have a second limiting step (416) for blocking the limiting protrusion (431) of the pull rod from returning from the second guide section (412) to the first guide section (411) at the joint position, the third guide section (413) extends from back to front, the joint position of the second guide section (412) and the third guide section (413) is arranged at an angle to define the stop portion (419), the second guide section (412) and the third guide section (413) have a third limiting step (417) for blocking the limiting protrusion (431) of the pull rod from returning from the third guide section (413) to the second guide section (412) at the joint position, and the joint position between the third guide section (413) and the second guide section (412) has a fourth limiting step (418) for blocking the limiting protrusion (431) of the pull rod from returning from the fourth guide section (414) to the third guide section (413).

11. The hood according to any one of claims 6-10, characterized in that: The first mounting seat (2) is provided with a gap opening (202) penetrating the insertion slot (200) on the side away from the second mounting seat (22); or the first mounting seat (2) is provided with a gap opening (202) penetrating the insertion slot (200) between the side away from the second mounting seat (22) and the bottom of the shell (10).

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