Foot pad structure and range hood

Abstract

The utility model relates to a foot pad structure and range hood. The foot pad structure, including mounting plate, foot pad base and bolt, the mounting plate and foot pad base correspondingly set up installation through -hole, one installation through -hole is the threaded hole, and the bolt is threaded to the threaded hole screw connection with another installation through -hole, one of the mounting plate and foot pad base is fixed with the limit bulge, and the other sets up the limit recess corresponding with the limit bulge, and the limit bulge is inserted in the corresponding limit recess. Through the thread fastening of bolt and the concave - convex limit structure between the limit bulge and the limit recess, double anti - vibration is realized, on one hand, vibration energy is absorbed by the convex - concave limit structure, avoids single bolt to bear the alternating stress, prolongs the fastening life, on the other hand, the limit bulge is aligned automatically when installing the limit recess, can prevent the misplacement installation, reduces the installation difficulty.

Description

Technical Field

[0001] This utility model relates to the technical field of range hoods, and in particular to a foot structure and a range hood. Background Technology

[0002] In European-style and near-suction range hoods, the foot pad is an important component used to limit the closed position of the smoke baffle.

[0003] Currently, most range hood foot structures in the industry are directly fixed to the main frame with one or more screws. During the operation of the range hood, the alternating stress (vibration) generated by the fan and the whole machine will be directly transmitted to the threaded engagement position of the fixing screws, causing the screw preload to gradually lose, loosen, or even fall off and fail. Once the screws loosen, problems such as the smoke baffle not closing properly and abnormal noise will occur. Utility Model Content

[0004] Therefore, it is necessary to provide a non-detachable foot structure and range hood to address the current problem of foot pads easily coming loose.

[0005] This application first provides a foot structure, including a mounting plate, a foot base and a bolt. The mounting plate and the foot base are provided with corresponding mounting through holes, one of which is a threaded hole. The bolt passes through the other mounting through hole and is threadedly connected to the threaded hole.

[0006] One of the mounting plate and the foot pad is fixed with a limiting protrusion, and the other has a limiting groove corresponding to the limiting protrusion. The limiting protrusion is inserted into the corresponding limiting groove.

[0007] In one embodiment, the foot pad is fixed with the limiting protrusion, and the mounting plate is provided with the limiting groove.

[0008] In one embodiment, the foot pad is fixed with at least two of the limiting protrusions, each of the limiting protrusions being distributed circumferentially around the mounting through hole, and the mounting plate having at least two limiting grooves corresponding one-to-one with each of the limiting protrusions.

[0009] In one embodiment, the foot pad is fixed with two first limiting protrusions and one second limiting protrusion. The two first limiting protrusions are symmetrically arranged with the mounting through hole as the center, and the line connecting the second limiting protrusion and the mounting through hole is perpendicular to the line connecting the two first limiting protrusions.

[0010] In one embodiment, the mounting through hole on the mounting plate is a threaded hole, the pad seat has a bolt groove, the mounting through hole penetrates the bottom wall of the bolt groove, and the pad structure also includes a cover plate, which is used to cover the pad seat to enclose the bolt nut in the bolt groove.

[0011] In one embodiment, a support column is fixed to the bottom wall of the bolt groove and a slot is provided. A buckle is fixed to the bottom surface of the cover plate. When the cover plate is closed with the pad seat, the bottom surface of the cover plate abuts against the top surface of the support column. The buckle passes through the bolt groove and engages with the inner wall of the slot.

[0012] In one embodiment, the cover plate is fixed with a cover plate protrusion, and the pad seat is also provided with a cover plate limiting groove with the same opening direction as the bolt groove. The cover plate limiting groove is connected to the bolt groove and the outside. When the cover plate and the pad seat are closed, the cover plate protrusion is inserted into the cover plate limiting groove.

[0013] In one embodiment, the outer edge of the bottom wall of the cover plate limiting groove and / or the outer edge of the bottom surface of the cover plate protrusion are chamfered to form a disassembly groove between the bottom wall of the cover plate limiting groove and the bottom surface of the cover plate protrusion.

[0014] In one embodiment, the foot pad is further provided with an anti-collision protrusion located on the opposite side of the disassembly groove.

[0015] This application also provides a range hood, including a range hood body and the aforementioned foot structure, wherein the mounting plate is a side plate of the range hood body.

[0016] The aforementioned foot structure achieves dual vibration resistance through the threaded fastening of bolts and the concave-convex limiting structure between the limiting protrusion and the limiting groove. On the one hand, the vibration energy is absorbed by the concave-convex limiting structure, avoiding the single bolt bearing alternating stress and extending the fastening life. On the other hand, during installation, the limiting protrusion automatically aligns with the limiting groove, which can prevent misalignment and reduce installation difficulty. Attached Figure Description

[0017] Figure 1 This is a perspective view of the foot structure of this application;

[0018] Figure 2 for Figure 1 A 3D view showing the hidden foot pads in the middle;

[0019] Figure 3 for Figure 1 A three-dimensional view of the center foot pad from another angle;

[0020] Figure 4 for Figure 3A stereoscopic view from another angle;

[0021] Figure 5 for Figure 4 Exploded view of the center foot, bolts, and cover plate;

[0022] Figure 6 for Figure 3 Exploded view of the center foot, bolts, and cover plate.

[0023] Reference numerals: 10, mounting plate; 11, limiting groove; 20, foot pad; 21, limiting protrusion; 211, first limiting protrusion; 212, second limiting protrusion; 22, bolt groove; 221, support column; 222, slot; 23, cover plate limiting groove; 24, anti-collision protrusion; 30, bolt; 40, mounting through hole; 50, cover plate; 51, buckle; 52, cover plate protrusion; 60, disassembly groove. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Please combine Figure 1 , Figure 2 as well as Figure 3 As shown, this application first provides a foot pad structure, including a mounting plate 10, a foot pad seat 20, and a bolt 30. The mounting plate 10 and the foot pad seat 20 are provided with corresponding mounting through holes 40, one of which is a threaded hole. The bolt 30 passes through the other mounting through hole 40 and is threadedly connected to the threaded hole. One of the mounting plate 10 and the foot pad seat 20 is fixed with a limiting protrusion 21, and the other is provided with a limiting groove 11 corresponding to the limiting protrusion 21. The limiting protrusion 21 is inserted into the corresponding limiting groove 11.

[0031] In this application, dual vibration resistance is achieved through the threaded fastening of the bolt 30 and the concave-convex limiting structure between the limiting protrusion 21 and the limiting groove 11. On the one hand, the vibration energy is absorbed by the concave-convex limiting structure, avoiding the single bolt 30 from bearing alternating stress and extending the fastening life. On the other hand, during installation, the limiting protrusion 21 automatically aligns with the limiting groove 11, which can prevent misalignment and reduce the difficulty of installation.

[0032] Specifically, bolt 30 passes through the mounting through hole 40 of mounting plate 10 and pad seat 20, and is tightened through the threaded hole to provide initial rigidity and achieve threaded fastening; while limiting protrusion 21 and limiting groove 11 are inserted and engaged to form rotational constraint. During vibration, the side wall of limiting protrusion 21 and the inner wall of limiting groove 11 generate contact stress, which disperses the load of bolt 30 and inhibits bolt 30 from rotating and loosening.

[0033] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the foot pad 20 is fixed with a limiting protrusion 21, and the mounting plate 10 has a limiting groove 11.

[0034] It is not difficult to understand that the limiting protrusion 21 is fixed to the foot seat 20, and the cost of the two being integrally formed is relatively low (usually injection molding), while the limiting groove 11 is opened on the mounting plate 10 (usually a sheet metal part). By utilizing the characteristic that sheet metal parts are easy to stamp and groove, the processing difficulty of the limiting groove 11 is reduced.

[0035] In some other embodiments, a limiting groove 11 may be provided for the foot pad 20, and a limiting protrusion 21 may be fixed in place on the mounting plate 10.

[0036] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the foot pad 20 is fixed with at least two limiting protrusions 21, each limiting protrusion 21 is distributed circumferentially around the mounting through hole 40, and the mounting plate 10 has at least two limiting grooves 11 corresponding to each limiting protrusion 21.

[0037] By fixing at least two limiting protrusions 21 circumferentially distributed around the mounting through hole 40 to the foot base 20, the multiple limiting protrusions 21 form a ring constraint, and the multiple limiting protrusions 21 work together to resist tangential force, disperse vibration torque, and eliminate the risk of single-point failure.

[0038] In some embodiments, the limiting protrusion 21 contacts the sidewall of the limiting groove 11 around its entire circumference to suppress rotational tendency.

[0039] Please combine Figure 2 as well as Figure 3As shown, in some embodiments, the foot pad 20 is fixed with two first limiting protrusions 211 and one second limiting protrusion 212. The two first limiting protrusions 211 are symmetrically arranged with the mounting through hole 40 as the center, and the line connecting the second limiting protrusion 212 and the mounting through hole 40 is perpendicular to the line connecting the two first limiting protrusions 211.

[0040] For ease of description, the direction parallel to the line connecting the two first limiting protrusions 211 is defined as the X-axis direction, and the direction parallel to the line connecting the second limiting protrusion 212 and the mounting through hole 40 is defined as the Y-axis direction.

[0041] In this application, two symmetrical first limiting protrusions 211 are set to resist Y-axis torsional vibration, and on this basis, a vertical second limiting protrusion 212 is set to resist X-axis translation. It is easy to understand that an orthogonal anti-vibration triangle region can be formed between the two first limiting protrusions 211 and the second limiting protrusion 212, which significantly improves the load capacity of the main vibration axis through mechanical optimization.

[0042] Furthermore, in some embodiments, the bottom surface of the second limiting protrusion 212 is chamfered on the side near the mounting through hole 40 to facilitate the installation of the pad 20.

[0043] Of course, in other embodiments, other positions of the other limiting protrusions 21 can also be chamfered to reduce the installation difficulty, which will not be listed here.

[0044] Please combine Figure 4 as well as Figure 5 As shown, in some embodiments, the mounting through hole 40 on the mounting plate 10 is a threaded hole, the pad seat 20 has a bolt groove 22, the mounting through hole 40 penetrates the bottom wall of the bolt groove 22, and the pad structure also includes a cover plate 50, which is used to cover the pad seat 20 to close the nut of the bolt 30 in the bolt groove 22.

[0045] A recessed bolt groove 22 is created in the foot pad 20. After the bolt 30 is installed through it, the nut sinks into the groove. The cover plate 50 closes with the foot pad 20, completely sealing the bolt groove 22 and creating a flat surface. This design, as you can understand, prevents oil fumes and dust from corroding the threads of the bolt 30, delaying corrosion and extending the service life of the foot pad structure. Furthermore, with the cover plate 50 concealing the bolt 30, there is no exposed bolt, conforming to the aesthetic design trends of home appliances.

[0046] Of course, in some other embodiments, the mounting through hole 40 on the foot pad 20 may also be a threaded hole.

[0047] Please combine Figure 5 as well as Figure 6As shown, in some embodiments, a support column 221 is fixed to the bottom wall of the bolt groove 22 and a slot 222 is provided. A buckle 51 is fixed to the bottom surface of the cover plate 50. When the cover plate 50 is closed with the pad seat 20, the bottom surface of the cover plate 50 abuts against the top surface of the support column 221, and the buckle 51 penetrates the bolt groove 22 to engage with the inner wall of the slot 222.

[0048] By vertically fixing the support column 221 to the bottom wall of the bolt groove 22, it abuts against the bottom surface of the cover plate 50 to share the external pressure and prevent the cover plate 50 from sinking into the groove, thereby protecting the cover plate 50 and the internal bolts 30. The elastic buckle 51 fixed to the bottom surface of the cover plate 50 penetrates the bottom wall of the bolt groove 22 and is inserted into the inner wall of the buckle groove 222 through deformation, forming a mechanical self-locking. The support is automatically completed by simply pressing the cover plate 50, which is easy to install and can resist vibration and dislodgement.

[0049] In some embodiments, three support columns 221 are fixed to the bottom wall of the bolt groove 22, and the three support columns 221 are respectively fixed to the three inner sidewalls of the bolt groove 22.

[0050] In some embodiments, a reinforcing rib is also fixed between the buckle 51 and the cover plate 50 to improve the structural strength of the buckle 51 and prevent breakage; preferably, the reinforcing rib is perpendicular to the buckle 51.

[0051] In some embodiments, the height of the support column 221 is lower than the depth of the bolt groove 22, so that the cover plate 50 is sunk into the bolt groove 22 and the top surface of the cover plate 50 is flush with the top surface of the pad seat 20, so as to avoid the user being scratched due to the presence of sharp edges.

[0052] Please combine Figure 5 as well as Figure 6 As shown, in some embodiments, the cover plate 50 is fixedly provided with a cover plate protrusion 52, and the pad seat 20 is also provided with a cover plate limiting groove 23 with the same opening direction as the bolt groove 22. The cover plate limiting groove 23 connects the bolt groove 22 and the outside. When the cover plate 50 and the pad seat 20 are closed, the cover plate protrusion 52 is inserted into the cover plate limiting groove 23.

[0053] The cover plate protrusion 52 is inserted into the cover plate limiting groove 23 of the pad seat 20 to constrain the horizontal movement freedom of the cover plate 50. In addition, the presence of the cover plate protrusion 52 and the cover plate limiting groove 23 makes the structure asymmetrical, which can play a certain role in preventing mistakes and further reduce the difficulty of installation.

[0054] Please combine Figure 4 , Figure 5 as well as Figure 6 As shown, in some embodiments, the outer edge of the bottom wall of the cover plate limiting groove 23 and / or the outer edge of the bottom surface of the cover plate protrusion 52 are chamfered to form a disassembly groove 60 between the bottom wall of the cover plate limiting groove 23 and the bottom surface of the cover plate protrusion 52.

[0055] A chamfer is formed on the outer edge of the bottom wall of the cover plate limiting groove 23 and / or the outer edge of the bottom surface of the cover plate protrusion 52 to form a disassembly groove 60 that is wider on the outside and narrower on the inside, so that the user can easily reach in and disassemble the cover plate 50.

[0056] Please combine Figure 1 as well as Figure 4 As shown, in some embodiments, the foot pad 20 is also fixed with an anti-collision protrusion 24, which is located on the opposite side of the disassembly groove 60.

[0057] Specifically, the anti-collision protrusion 24 faces the opening side of the range hood and is used to abut against the smoke baffle to restrict the closed state of the smoke baffle. The anti-collision protrusion 24 is made of rubber or other elastic materials, and different examples are given in this application.

[0058] By placing the disassembly groove 60 on the opposite side of the anti-collision protrusion 24, that is, on the side away from the opening of the range hood, the occurrence of the cover plate 50 falling off due to user misoperation can be reduced.

[0059] This application also provides a range hood, including a range hood body and the aforementioned foot structure, wherein the mounting plate 10 is a side plate of the range hood body.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A foot pad structure, characterized in that, The device includes a mounting plate (10), a foot pad (20), and a bolt (30). The mounting plate (10) and the foot pad (20) are provided with mounting through holes (40) corresponding to each other. One of the mounting through holes (40) is a threaded hole, and the bolt (30) passes through the other mounting through hole (40) to be threadedly connected to the threaded hole. One of the mounting plate (10) and the foot pad (20) is fixed with a limiting protrusion (21), and the other has a limiting groove (11) corresponding to the limiting protrusion (21). The limiting protrusion (21) is inserted into the corresponding limiting groove (11).

2. The foot structure according to claim 1, characterized in that, The foot pad (20) is fixed with the limiting protrusion (21), and the mounting plate (10) is provided with the limiting groove (11).

3. The foot structure according to claim 2, characterized in that, The foot pad (20) is fixed with at least two limiting protrusions (21), each of the limiting protrusions (21) is distributed circumferentially around the mounting through hole (40), and the mounting plate (10) has at least two limiting grooves (11) corresponding to each of the limiting protrusions (21).

4. The foot structure according to claim 3, characterized in that, The foot pad (20) is fixed with two first limiting protrusions (211) and one second limiting protrusion (212). The two first limiting protrusions (211) are symmetrically arranged with the mounting through hole (40) as the center. The line connecting the second limiting protrusion (212) and the mounting through hole (40) is perpendicular to the line connecting the two first limiting protrusions (211).

5. The foot structure according to claim 2, characterized in that, The mounting through hole (40) on the mounting plate (10) is a threaded hole. The foot pad (20) has a bolt groove (22). The mounting through hole (40) penetrates the bottom wall of the bolt groove (22). The foot pad structure also includes a cover plate (50). The cover plate (50) is used to cover the foot pad (20) to enclose the nut of the bolt (30) in the bolt groove (22).

6. The foot structure according to claim 5, characterized in that, The bottom wall of the bolt groove (22) is fixed with a support column (221) and has a slot (222). The bottom surface of the cover plate (50) is fixed with a buckle (51). When the cover plate (50) is closed with the pad seat (20), the bottom surface of the cover plate (50) abuts against the top surface of the support column (221). The buckle (51) passes through the bolt groove (22) and engages with the inner wall of the slot (222).

7. The foot structure according to claim 6, characterized in that, The cover plate (50) is fixed with a cover plate protrusion (52), and the pad seat (20) is also provided with a cover plate limiting groove (23) with the same opening direction as the bolt groove (22). The cover plate limiting groove (23) connects the bolt groove (22) and the outside. When the cover plate (50) and the pad seat (20) are closed, the cover plate protrusion (52) is inserted into the cover plate limiting groove (23).

8. The foot structure according to claim 7, characterized in that, The outer edge of the bottom wall of the cover plate limiting groove (23) and / or the outer edge of the bottom surface of the cover plate protrusion (52) are chamfered to form a disassembly groove (60) between the bottom wall of the cover plate limiting groove (23) and the bottom surface of the cover plate protrusion (52).

9. The foot structure according to claim 8, characterized in that, The foot pad (20) is also fixed with an anti-collision protrusion (24), which is located on the opposite side of the disassembly groove (60).

10. A range hood, characterized in that, Includes a range hood body and a foot structure as described in any one of claims 1 to 9, wherein the mounting plate (10) is a side plate of the range hood body.

Images