Oil cup mounting structure of range hood and range hood

Abstract

The present invention discloses an oil cup mounting structure for a range hood and the range hood. The oil cup mounting structure for the range hood includes an oil cup and a mounting structure. The oil cup includes a cup body and a bent portion formed at an end of the cup body. The mounting structure includes an outer frame having a first side wall, the first side wall having a first opening for inserting the bent portion. A limit block and a rotating shaft. The limit block is rotatably disposed within the outer frame via the rotating shaft. The bent portion is formed with a positioning column that can engage with the limit block. The position where the limit block engages with the positioning column maintains a tendency to rotate toward the first side wall. The limit block also maintains a tendency to press against the bent portion along its own extension direction. Compared with the prior art, the present invention has the advantage that, by maintaining the above-mentioned tendency, the limit block can always push the oil cup outward when the oil cup is not installed, preventing it from being hooked in. After installation, the limit block forms a self-locking structure, preventing the oil cup from falling due to vibration or other reasons, and providing stable installation.

Description

Technical Field

[0001] The invention relates to a mechanical mounting structure, in particular to an oil cup mounting structure of a range hood and a range hood having the oil cup mounting structure. Background Art

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. They operate based on the principles of fluid dynamics, using a centrifugal fan installed inside the hood to draw in and exhaust cooking fumes, while a filter removes some grease particles. A centrifugal fan consists of a volute, an impeller mounted within the volute, and a motor that drives the impeller. As the impeller rotates, negative pressure is generated at the fan's center, drawing cooking fumes from beneath the hood into the fan. After being accelerated by the fan, the volute collects them and guides them out of the room.

[0003] To prevent oil from dripping onto the stove, an oil cup for collecting oil is usually provided at the bottom of the range hood. For example, the Chinese patent application number 202020760822.0 discloses an oil cup mounting structure, which includes an oil cup and an oil cup bracket. The oil cup bracket includes a splint, which is connected to a side plate, which is connected to a bottom plate, and a clamping groove is provided between the splint, the bottom plate and the side plate. An adsorption component is provided on the splint, so that the oil cup bracket is adsorbed on the body to be installed.

[0004] This existing oil cup is prone to improper installation by users when installing the oil cup. There is no obvious feedback when the installation is in place, making it impossible for users to clearly know whether the oil cup is installed in place. As a result, if the oil cup is not in place after installation, as the range hood vibrates and runs, even if a magnetic device is provided to prevent loosening, the oil cup may still fall due to vibration. For example, for a lift-type range hood, the oil cup used in this range hood can be raised and lowered and hidden inside. In this state, if the oil cup is not installed in place, it will interfere with the box during the oil cup lifting process, causing the oil cup to fall. In addition, for some large-volume oil cups, the oil cup is heavy when filled with oil, and the oil cup is easy to slip out if it is not installed in place. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide an oil cup mounting structure for a range hood in view of the above-mentioned deficiencies in the prior art, so as to ensure that the oil cup is properly installed.

[0006] The second technical problem to be solved by the present invention is to provide a range hood using the above-mentioned oil cup mounting structure.

[0007] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: an oil cup mounting structure for a range hood, comprising an oil cup and a mounting structure, wherein the oil cup comprises a cup body and a bent portion formed at the end of the cup body; the characteristics are:

[0008] The mounting structure includes:

[0009] An outer frame, the outer frame having a first side wall, the first side wall being provided with a first opening for inserting the bent portion;

[0010] A limit block and a rotating shaft, wherein the limit block is rotatably arranged in the outer frame via the rotating shaft, and a positioning column that can engage with the limit block is formed on the bending portion, and the position where the limit block is engaged with the positioning column maintains a tendency to rotate toward the direction of the first side wall, and the limit block also maintains a tendency to press toward the bending portion along its own extension direction.

[0011] By maintaining the above-mentioned trend, the limit block can always push the oil cup outward when the oil cup is not installed in place and cannot be hung in. After installation, it forms a self-locking function to prevent the oil cup from falling due to vibration and other reasons, and the installation is stable.

[0012] Preferably, the mounting structure further comprises a torsion spring, which is arranged on the rotating shaft. The torsion spring has two free ends and respectively abuts against the outer frame and the limit block, thereby making the limit block maintain a tendency to rotate toward the first side wall.

[0013] In order to maintain the rotation tendency of the limit block, one free end of the torsion spring abuts or is fixed to the top surface of the outer frame, and abuts or is fixed at a position away from the first side wall, and the other free end of the torsion spring abuts or is fixed to a side of the limit block away from the first side wall.

[0014] In order to ensure the cooperation between the limit block and the oil cup, a stop block is further provided in the outer frame. The stop block is located between the limit block and the first side wall and can resist the limit block before the oil cup is installed.

[0015] Preferably, the mounting structure further comprises a compression spring, which is arranged between the rotating shaft and the outer frame and away from the limiting block, thereby enabling the limiting block to maintain a tendency to press toward the bending portion along its own extension direction.

[0016] In order to prevent the rotation of the limit block from interfering with the rotating shaft and the outer frame, a first sliding groove is further formed in the outer frame, and the rotating shaft is slidably arranged in the first sliding groove.

[0017] Preferably, in order to enable the compression spring to stably apply pressure to the limit block, the first slide groove gradually extends from top to bottom in an inclined direction away from the first side wall, the compression spring is located in the first slide groove, and the compression spring also gradually extends from top to bottom in an inclined direction away from the first side wall.

[0018] Preferably, in order to facilitate the cooperation between the limit block and the bending part, the limit block has a first end and a second end relative to each other along its own extension direction, the rotating shaft is arranged at the first end of the limit block or at a position close to the first end, and the second end of the limit block is formed with a positioning groove recessed toward the first end, and the positioning column of the oil cup can be stuck in the positioning groove.

[0019] To facilitate the installation of the oil cup, the positioning column is conveniently inserted into the positioning groove. The upper surface of the positioning column is arc-shaped, and the shape and size of the positioning column match the positioning groove.

[0020] Furthermore, the bending portion is formed by bending the end of the cup body toward the middle direction of the cup body, and the outer frame has a second side wall adjacent to the first side wall. A second opening is provided on the second side wall, and the first opening and the second opening are connected to each other. Thus, the first opening, the second opening and the corresponding space in the outer frame constitute a second slide groove; the first opening corresponds to the bending portion of the oil cup, and the second opening corresponds to the transition portion between the bending portion of the oil cup and the cup body, so that the opening of the outer frame can be completely matched with the bending portion of the oil cup, thereby facilitating the insertion of the bending portion.

[0021] Furthermore, the cup body of the oil cup is in the shape of an elongated strip, and a bending portion is formed at both ends of the cup body in the length direction. The extension direction of the rotating shaft is consistent with the length direction of the cup body, thereby collecting more oil and dirt, and at the same time, both ends of the oil cup are stably installed.

[0022] The technical solution adopted by the present invention to solve the second technical problem is: a range hood, including a range hood main body, characterized in that: an installation opening for installing a mounting structure is opened at the bottom of the range hood main body.

[0023] Compared with the prior art, the advantage of the present invention is that by maintaining the above-mentioned trend, the limit block can always push the oil cup outward and cannot be hung in when the oil cup is not installed in place. After installation in place, it forms a self-locking function to prevent the oil cup from falling due to vibration and other reasons, and the installation is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of a range hood according to an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of the exploded structure of a range hood according to an embodiment of the present invention;

[0026] Figure 3 is a schematic diagram of an oil cup of a range hood according to an embodiment of the present invention;

[0027] Figure 4 for Figure 3 A schematic diagram of the partial I enlargement;

[0028] Figure 5 is a schematic diagram of the installation structure of a range hood according to an embodiment of the present invention;

[0029] Figure 6 is a cross-sectional view of the installation structure of a range hood according to an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of a range hood installation structure with a hidden outer frame according to an embodiment of the present invention;

[0031] Figure 8 2. It is a cross-sectional view of the oil cup mounting structure of the range hood according to an embodiment of the present invention (initial state);

[0032] Figure 9 This is a cross-sectional view of the oil cup mounting structure of the range hood according to an embodiment of the present invention (in the intermediate dead center state);

[0033] Figure 10 This is a cross-sectional view of the oil cup mounting structure of a range hood according to an embodiment of the present invention (installation completed state). DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0036] See also Figure 1 and Figure 2A range hood includes a main body 1 and an oil cup mounting structure 2. The oil cup mounting structure 2 is disposed at the bottom of the main body 1, such as the bottom of the air inlet of a low-draft range hood as shown in the figure, or in other types of range hoods, such as the rear bottom of the fume collection hood of a top-draft range hood. The oil cup mounting structure 2 can also be used in other existing range hoods, such as the lift-type range hood with a liftable air inlet as described in the background art.

[0037] The oil cup mounting structure 2 includes an oil cup 21 and a mounting structure 22 for mounting the oil cup 21 with the oil fume suction body 1. The bottom of the oil fume suction body 1 is provided with a mounting opening 11 for the mounting structure 22 to be installed. Figure 3 and Figure 4 The oil cup 21 includes a long cup body 211 and bent portions 212 formed at both ends of the cup body 211 in the longitudinal direction. The bent portions 212 are formed by bending the ends of the top of the cup body 211 toward each other (toward the middle of the cup body 211). The top surface of each bent portion 212 is formed with an upwardly protruding positioning column 213. The length direction of the positioning column 213 is consistent with the length direction of the cup body 211. Figure 3 The upper surface of the positioning post 213 is arc-shaped.

[0038] See also Figures 5 to 7The mounting structure 22 also has two corresponding bent portions 212. Each mounting structure 22 includes an outer frame 221, a stopper 222, a rotating shaft 223, a torsion spring 224, and a compression spring 225. The outer frame 221 is a hollow structure, formed with a first slide groove 2211 and a second slide groove 2212. The stopper 222 is mounted within the outer frame 221 via a rotating shaft 223, and the rotating shaft 223 does not rotate relative to the outer frame 221. The outer frame 221 has adjacent first and second side walls 2213 and 2214. The first side wall 2213 is provided with a first opening 2215, and the second side wall 2214 is provided with a second opening 2216, the two openings being interconnected. Thus, the first opening 2215, the second opening 2216, and the corresponding space within the outer frame 221 constitute the second slide groove 2212. The bent portion 212 of the oil cup 21 is inserted through the first opening 2215 and the second opening 2216 and can slide along the second slide groove 2212. The first opening 2215 corresponds to the bent portion 212 of the oil cup 21, and the second opening 2216 corresponds to the transition between the bent portion 212 of the oil cup 21 and the cup body 211. In the installed state, the first side wall 2213 faces the front, and the second side wall 2214 faces the outside (the side where the two mounting structures 22 are away from each other, such as the left side of the left mounting structure 22 is the outside, and the right side of the right mounting structure 22 is the outside). When sliding along the second slide groove 2212, the oil cup 21 slides from the first opening 2215 to the side opposite to the first side wall 2213 of the outer frame 221. During this process, the second opening 2216 can serve as a guide groove for the sliding of the oil cup 21.

[0039] The limit block 222 has a first end and a second end relative to each other along its own extension direction. The rotating shaft 223 is arranged at the first end of the limit block 222 or at a position close to the first end. The second end of the limit block 222 is formed with a positioning groove 2221 recessed toward the first end. The shape and size of the positioning column 213 of the oil cup 21 are adapted to the positioning groove 2221, so that the positioning column 213 can be snapped into the positioning groove 2221, so that when the oil cup 21 is pushed backward for installation, the oil cup 21 can drive the limit block 222 to rotate.

[0040] The extension direction of the rotating shaft 223 is consistent with the length direction of the oil cup 21, that is, it extends between the second side wall 2214 of the outer frame 221 and the opposite side. The above-mentioned torsion spring 224 is set on the rotating shaft 223. One end of the two free ends of the torsion spring 224 abuts against the outer frame 221, and the other end abuts against the limit block 222, thereby making the limit block 222 maintain the tendency of the second end to rotate toward the first side wall 2213. Figure 6As shown, one end of the torsion spring 224 abuts or is fixed to the top surface of the outer frame 221 and is located away from the first side wall 2213. The other end of the torsion spring 224 abuts or is fixed to a surface of the stop block 222 away from the first side wall 2213 (in this embodiment, it is fixed by being inserted into the stop block 222). The compression spring 225 is disposed between the rotating shaft 223 and the outer frame 221 and away from the stop block 222.

[0041] The first slide groove 2211 gradually extends from top to bottom in an inclined direction away from the first side wall 2213, and the compression spring 225 is located in the first slide groove 2211. Therefore, the compression spring 225 also gradually extends from top to bottom in an inclined direction away from the first side wall 2213. The rotating shaft 223 can slide up and down along the first slide groove 2211, so that the limit block 222 remains pressed against the bending portion 212, and the direction of the pressing force is the same as the extension direction of the limit block 222.

[0042] Other elastic members, such as tension springs, elastic pads, etc., may also be used to replace the tension spring 224 and compression spring 225 as long as the direction of the force is consistent.

[0043] A stopper 226 is also provided in the outer frame 221 and is located between the limit block 222 and the first side wall 2213 . It can press against the limit block 222 in front of the oil cup 21 to prevent it from rotating upward due to the force of the torsion spring 224 until the torsion spring 224 is in a natural state.

[0044] See also Figure 8 Figure 2 shows the initial installation state. The oil cup 21 is initially inserted, and its bent portion 212 is inserted into the second slot 2212. It is then pushed backward (away from the operator in the installed state, to the left in the figure) by an external thrust F. At this point, the torsion spring 224 exerts a forward force F1 on the oil cup 21 through the stopper 222 (toward the operator in the installed state, to the right in the figure), while the compression spring 225 exerts a force F2 on the oil cup 21 through the stopper 222. When the oil cup 21 is not fully installed, the combined force F3 acts on the oil cup 21, ensuring that it remains locked until fully installed. This prevents the oil cup 21 from being improperly installed and falling off after vibration during startup.

[0045] See also Figure 9 As the oil cup 21 continues to be pushed backward, the positioning column 213 is stuck in the positioning groove 2221, so that the oil cup 21 can drive the limit block 222 to rotate, and the rotating shaft 223 slides in the first slide groove 2211 and compresses the compression spring 225. When the limit block 222 is rotated to the dead point position, the limit block 222 extends vertically, and the force F2 applied by the compression spring 225 to the limit block 222 is vertically downward, and the compression of the compression spring 225 reaches the maximum.

[0046] See also Figure 10 The oil cup 21 is continuously pushed backward. After the limit block 222 is pushed past the dead point and installed in place, the force exerted by the torsion spring 224 and the compression spring 225 on the limit block 222 forms a self-locking state. The two forces form an angle of ≤90°, so that the resultant force F3 is vertically downward or backward, locking the limit block 222 and the oil cup 21, ensuring that the oil cup 21 is clamped and will not fall.

Claims

1. An oil cup mounting structure for a range hood, comprising an oil cup (21) and a mounting structure (22), wherein the oil cup (21) comprises a cup body (211) and a bent portion (212) formed at an end of the cup body (211); characterized in that: The mounting structure (22) comprises: An outer frame (221), the outer frame (221) having a first side wall (2213), the first side wall (2213) being provided with a first opening (2215) for inserting the bent portion (212); A limit block (222) and a rotating shaft (223), wherein the limit block (222) is rotatably arranged in the outer frame (221) via the rotating shaft (223), a positioning column (213) capable of engaging with the limit block (222) is formed on the bending portion (212), and the position where the limit block (222) engages with the positioning column (213) maintains a tendency to rotate toward the first side wall (2213), and the limit block (222) also maintains a tendency to press against the bending portion (212) along its own extension direction; The mounting structure (22) further comprises a torsion spring (224), the torsion spring (224) being arranged on the rotating shaft (223), the torsion spring (224) having two free ends and respectively abutting against the outer frame (221) and the limiting block (222), thereby causing the limiting block (222) to maintain a tendency to rotate in the direction of the first side wall (2213); The mounting structure (22) further comprises a compression spring (225), which is arranged between the rotating shaft (223) and the outer frame (221) and away from the limiting block (222), thereby enabling the limiting block (222) to maintain a tendency to press against the bending portion (212) along its own extension direction.

2. The oil cup mounting structure for a range hood according to claim 1, characterized in that: One free end of the torsion spring (224) is in contact with or fixed to the top surface of the outer frame (221) and is in contact with or fixed at a position away from the first side wall (2213), and the other free end of the torsion spring (224) is in contact with or fixed to a surface of the limit block (222) away from the first side wall (2213).

3. The oil cup mounting structure for a range hood according to claim 1, characterized in that: A stopper (226) is further provided in the outer frame (221). The stopper (226) is located between the limit block (222) and the first side wall (2213) and can abut against the limit block (222) before the oil cup (21) is installed.

4. The oil cup mounting structure for a range hood according to claim 1, characterized in that: A first sliding groove (2211) is also formed in the outer frame (221), and the rotating shaft (223) is slidably arranged in the first sliding groove (2211).

5. The oil cup mounting structure for a range hood according to claim 4, characterized in that: The first sliding groove (2211) gradually extends from top to bottom in a direction away from the first side wall (2213), and the compression spring (225) is located in the first sliding groove (2211). The compression spring (225) also gradually extends from top to bottom in a direction away from the first side wall (2213).

6. The oil cup mounting structure for a range hood according to claim 1, characterized in that: The limiting block (222) has a first end and a second end opposite to each other along its own extension direction; the rotating shaft (223) is arranged at the first end of the limiting block (222) or at a position close to the first end; the second end of the limiting block (222) is formed with a positioning groove (2221) recessed toward the first end; and the positioning column (213) of the oil cup (21) can be inserted into the positioning groove (2221).

7. The oil cup mounting structure for a range hood according to claim 6, characterized in that: The upper surface of the positioning column (213) is arc-shaped, and the shape and size of the positioning column (213) match the positioning groove (2221).

8. The oil cup mounting structure for a range hood according to claim 1, characterized in that: The bent portion (212) is formed by bending the end of the cup body (211) toward the middle of the cup body (211); the outer frame (221) has a second side wall (2214) adjacent to the first side wall (2213); a second opening (2216) is provided on the second side wall (2214); the first opening (2215) and the second opening (2216) are connected to each other; thus, the first opening (2215), the second opening (2216) and the corresponding space in the outer frame (221) constitute a second sliding groove (2212); the first opening (2215) corresponds to the bent portion (212) of the oil cup (21); and the second opening (2216) corresponds to the transition portion between the bent portion (212) of the oil cup (21) and the cup body (211).

9. The oil cup mounting structure for a range hood according to any one of claims 1 to 8, characterized in that: The cup body (211) of the oil cup (21) is in an elongated strip shape. Both ends of the cup body (211) in the length direction are formed with bending portions (212). The extending direction of the rotating shaft (223) is consistent with the length direction of the cup body (211).

10. A range hood, comprising a range hood body (1), characterized in that: The oil cup mounting structure according to any one of claims 1 to 9 is applied, and a mounting opening (11) for mounting the mounting structure (22) is provided at the bottom of the oil fume suction body (1).

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