Fixing frame and household appliance

Abstract

The invention discloses a fixing frame and a household appliance, and relates to the technical field of electrical equipment. A mounting threaded hole is formed in the fixing frame mounting opening; the fixing frame comprises a frame body and an installation piece, and the installation piece is provided with a threaded through hole for the fastening piece to penetrate through. The frame body is provided with a limiting hole, and the installation piece is arranged in the limiting hole in a split mode or in an integrated mode. The side wall of the limiting hole is constructed in the mode that under the condition that the fastening piece is screwed into the threaded through hole and connected with the installation threaded hole, the side wall of the installation piece abuts against the side wall of the limiting hole. When the fastening piece is screwed into the threaded through hole, the side wall of the mounting piece abuts against the side wall of the limiting hole, then acting force between the fastening piece and the frame body is dispersed to the side wall of the limiting hole from the threaded through hole, stress is prevented from being concentrated at the threaded through hole, local deformation of the frame body at the threaded through hole is reduced, and the service life of the frame body is prolonged. And the overall service life of the fixing frame and the corresponding household appliance can be prolonged.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and in particular to a mounting bracket and a household appliance. Background Technology

[0002] In the field of electrical equipment, household appliances such as switches and sockets typically consist of a mounting bracket and a functional module, with the functional module mounted on the mounting bracket. The mounting bracket is then connected to the mounting boxes or other structural elements such as walls and tables via bolts.

[0003] During the installation and use of the aforementioned household appliances, sometimes the mounting bracket may deform or the bolts may become difficult to remove, resulting in a reduction in the overall lifespan of the product. Summary of the Invention

[0004] The main purpose of this application is to provide a mounting bracket and a household appliance that can help extend the product's service life.

[0005] To achieve the above objectives, the fixing bracket proposed in this application is used for assembly with a fixing bracket mounting port, wherein the fixing bracket mounting port is provided with a mounting threaded hole; the fixing bracket includes a bracket body and a mounting component, wherein the mounting component is provided with a threaded through hole for fasteners to pass through; the bracket body is provided with a limiting hole, and the mounting component is separately or integrally disposed in the limiting hole; the sidewall of the limiting hole is constructed such that when the fastener is screwed into the threaded through hole and connected to the mounting threaded hole, the sidewall of the mounting component abuts against the sidewall of the limiting hole.

[0006] In some implementations, the fastener includes a threaded rod and an abutment body, the abutment body being disposed at the end of the threaded rod away from the mounting threaded hole; the mounting member has a first protrusion protruding from the side facing the abutment body, the first protrusion being located outside the threaded through hole, the abutment body abutting against the first protrusion; when the threaded rod is screwed into the mounting threaded hole, the abutment body is used to deform the first protrusion and / or the abutment body through the screwing action of the threaded rod and the mounting threaded hole.

[0007] In some implementations, the side of the mounting member facing away from the abutment is the mounting surface, and each cross-section of the first protrusion is perpendicular to the axis of the threaded through hole; from the mounting surface to the abutment, the area of ​​the cross-section of the first protrusion gradually decreases or gradually increases.

[0008] In some implementations, the end face of the first protrusion facing the abutment is designated as a first flat surface, which is configured to abut the abutment.

[0009] In some implementations, the frame body is provided with a receiving structure, and along the axial direction of the threaded through hole, the abutment of the fastener abuts against one side of the mounting member, and the receiving structure abuts against the other side of the mounting member to support the mounting member.

[0010] In some implementations, the sidewall of the limiting hole is provided with a snap-fit ​​structure, which abuts against one side of the mounting component along the axial direction of the threaded through hole, and the receiving structure abuts against the other side of the mounting component.

[0011] In some implementations, the receiving structure includes a support arm extending toward the mounting member in the radial direction of the limiting hole to abut against the side of the mounting member opposite to the abutment body.

[0012] In some implementations, a mounting boss is provided on the inner side of the limiting hole. The mounting boss protrudes along the direction of the axis of the limiting hole, and the inner side of the mounting boss encloses a retaining space. At least a portion of the receiving structure is provided on the side of the mounting boss facing the mounting threaded hole along the axial direction of the limiting hole. The mounting member is pressed into the retaining space by the driving action of the fastener, and the mounting member abuts against the receiving structure.

[0013] In some implementations, the limiting hole is provided with a relief groove in the direction of the axis of the limiting hole, and at least part of the relief groove is spaced apart from the mounting boss; after the fastener is screwed into the threaded through hole and connected to the mounting threaded hole, the mounting part rotates with the fastener; after the edge of the mounting part enters the relief groove, it is pressed into the enclosure space under the drive of the fastener.

[0014] In some implementations, the mounting member is polygonal, and at least one corner of the mounting member is a side-blocking structure, which is chamfered or rounded; along the radial direction of the limiting hole, the limiting hole has an movable gap between the hole wall next to the relief groove and the edge of the mounting member.

[0015] In some implementations, the mounting member has a second protrusion protruding from the side facing the abutment, and the second protrusion is located outside the threaded through hole; on the surface of the mounting member facing the abutment, the height of the second protrusion is less than the height of the first protrusion; when the threaded rod is screwed into the mounting threaded hole, the abutment causes the first protrusion to undergo plastic deformation, thereby causing the abutment to press against the second protrusion.

[0016] In some implementations, the mounting component is provided with at least two first protrusions and at least two second protrusions, and the first protrusions and the second protrusions are alternately arranged along the circumferential direction of the threaded through hole.

[0017] In some implementations, the mounting component is provided with at least one first protrusion and at least one second protrusion, which are arranged along the circumferential direction of the threaded through hole. Projected along the axial direction of the threaded rod, on a preset circumference, the first protrusion and the abutment body have a first abutment arc length, and the second protrusion and the abutment body have a second abutment arc length. The sum of the first abutment arc length and the second abutment arc length is greater than or equal to 40% and less than or equal to 60% of the circumference of the preset circumference.

[0018] In some implementations, the frame body includes a cylindrical body, the interior of which forms the threaded through hole; the cylindrical body includes at least two deformable portions spaced apart in the circumferential direction, at least one of the deformable portions having a first protrusion at one end facing the abutment; along the radial direction of the threaded through hole, the first protrusion has a bevel on the side facing away from the threaded through hole; when the fastener is connected to the mounting threaded hole, the fastener presses against the bevel of the first protrusion to move the corresponding deformable portion toward the center of the threaded through hole.

[0019] In some implementations, the frame body is provided with at least two limiting holes and at least two mounting parts, and the fasteners, the mounting parts, and the limiting holes are connected in a one-to-one correspondence.

[0020] This application also provides a household appliance, which includes the aforementioned mounting bracket.

[0021] In some implementations, the household appliance is a wall switch or a wall socket.

[0022] Analysis revealed that most current products have mounting holes directly drilled into the mounting bracket itself. In the pursuit of thinner and lighter products, the mounting bracket is made thinner. However, when using installation tools such as electric screwdrivers for installation, the tightening torque is sometimes too high. This causes the bolts to deform during the tightening process, and the deformation of the mounting bracket also makes the bolts more difficult to remove due to compression, thus reducing the overall service life of the product.

[0023] The technical solution of this application provides a limiting hole in the frame body, and a mounting component is located in the limiting hole. The mounting component has a threaded through hole for fasteners to pass through. During the process of screwing the fastener in, the side wall of the mounting component abuts against the side wall of the limiting hole. With this configuration, when the fastener is screwed into the threaded through hole, the side wall of the mounting component abuts against the side wall of the limiting hole, thereby dispersing the force between the fastener and the frame body from the threaded through hole to the side wall of the limiting hole, avoiding stress concentration at the threaded through hole. This helps to reduce the local deformation of the frame body at the threaded through hole and helps to extend the overall service life of the fixed frame and the corresponding household appliances. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application; for those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of an embodiment of the household appliance provided in this application; Figure 2 for Figure 1 A partial sectional view of the installation component at point AA being screwed into the enclosure space; Figure 3 for Figure 1 A partial sectional view at point BB; Figure 4 For the corresponding Figure 1 A partial sectional view of the mounting component at point AA when it has not been screwed into the enclosure space; Figure 5 A schematic diagram of the mounting component in one embodiment of the fixing frame provided in this application; Figure 6 A top view of the first protrusion in one embodiment of the fixture provided in this application; Figure 7 A side view of the first protrusion in one embodiment of the fixture provided in this application; Figure 8 A schematic diagram of the structure of an embodiment of the fixing frame provided in this application; Figure 9 for Figure 8 A magnified view of a section at point D; Figure 10 A perspective structural diagram of another embodiment of the fixing frame provided in this application; Figure 11 for Figure 10 A partial sectional view at point CC; Figure 12 A three-dimensional structural schematic diagram of the mounting component in another embodiment of the mounting bracket provided in this application; Figure 13 A top view of the mounting component in another embodiment of the mounting bracket provided in this application; Figure 14 A side view of the mounting component in another embodiment of the mounting bracket provided in this application; Figure 15 A perspective structural schematic diagram of yet another embodiment of the fixing frame provided in this application; Figure 16A three-dimensional structural schematic diagram of the mounting component in another embodiment of the fixing frame provided in this application; Figure 17 This is a cross-sectional view of the fixing bracket when the fastener is screwed into the threaded through hole in one embodiment of this application; Figure 18 This is a cross-sectional view of the mounting bracket when the fastener is screwed into the mounting threaded hole in one embodiment of this application; Figure 19 This is a cross-sectional view of the fixing frame when the fastener is pressed against the first protrusion in one embodiment of this application; Figure 20 This is a cross-sectional view of the fixing frame when the fastener crushes the first protrusion in one embodiment of this application.

[0026] Explanation of icon numbers: 10. Frame body; 101. Leaving groove; 11. First protrusion; 110. First flat surface; 12. Threaded through hole; 13. Second protrusion; 14. Limiting hole; 140. Movement clearance; 141. First sidewall; 142. Second sidewall; 15. Supporting structure; 150. Support arm; 16. Mounting component; 161. First side section; 162. Side guard structure; 17. Mounting boss; 170. Enclosure space; 18. Clip-on structure; 19. Deformation section; 190. Cylinder body; 191. Deformation groove; 20. Fasteners; 21. Threaded rods; 22. Abutment bodies; 30. Household appliances; 31. Mounting bracket opening; 310. Locking fasteners; 311. Mounting threaded holes.

[0027] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0031] In the field of electrical equipment, household appliances such as switches and sockets typically consist of a mounting bracket and a functional module, with the functional module mounted on the mounting bracket. The mounting bracket is then connected to the mounting boxes or other structural elements such as walls and tables via bolts.

[0032] During the installation and use of the aforementioned household appliances, sometimes the mounting bracket may deform or the bolts may become difficult to remove, resulting in a reduction in the overall lifespan of the product.

[0033] Therefore, this application proposes a mounting bracket and a household appliance to extend the product's lifespan. The household appliance includes, but is not limited to, a wall switch or a wall socket. Taking a wall switch as an example, a recessed mounting opening is formed in the wall during installation, within which a base box or other seat structure can be installed. After the initial decoration is completed, the mounting bracket is then connected to the base box or other seat structure within the mounting opening. It is understood that a base box may not be installed within the mounting opening; for example, a connecting piece or similar connecting component can be installed in the mounting opening.

[0034] Analysis revealed that most current products have mounting holes directly drilled into the mounting bracket itself. In the pursuit of thinner and lighter products, the mounting bracket is made thinner. However, when using installation tools such as electric screwdrivers for installation, the tightening torque is sometimes too high. This causes the bolts to deform during the tightening process, and the deformation of the mounting bracket also makes the bolts more difficult to remove due to compression, thus reducing the overall service life of the product.

[0035] Based on the above analysis, in one embodiment of this application, referring to... Figure 1 and Figure 2 ,in Figure 1 This embodiment shows a schematic diagram of the structure of the household appliance 30. Figure 2 Showing Figure 1 A partial sectional view of the mounting component 16 at point AA being screwed into the enclosed space 170; wherein the household appliance 30 includes a mounting bracket, and the mounting bracket includes a bracket body 10. The mounting bracket is used to assemble with a mounting bracket mounting port 31, wherein the mounting bracket mounting port 31 can be set as a mounting port on a component such as a wall or table.

[0036] In addition, refer to Figure 2 The mounting bracket also includes a mounting member 16; the bracket body 10 is provided with a limiting hole 14, and the mounting member 16 is either separately disposed or integrally disposed in the limiting hole 14; the mounting member 16 is provided with a threaded through hole 12 for the fastener 20 to pass through. Correspondingly, the mounting opening 31 of the mounting bracket is provided with a mounting threaded hole 311. The sidewall of the limiting hole 14 is configured such that when the fastener 20 is screwed into the threaded through hole 12 and connected to the mounting threaded hole 311, the sidewall of the mounting member 16 abuts against the sidewall of the limiting hole 14.

[0037] The mounting component 16 can be understood as a component used to install the fastener 20. The mounting component 16 can be made of materials such as metal or plastic. The mounting component 16 is separately set in the limiting hole 14. It can be understood that the mounting component 16 and the corresponding frame body 10 of the limiting hole 14 are formed in different processes, and then the mounting component 16 is installed into the limiting hole 14. In this case, the frame body 10 can be made of plastic to reduce weight, and the mounting component 16 can be made of metal materials such as copper, iron, or aluminum alloy to improve structural strength.

[0038] On the other hand, the mounting part 16 is integrally disposed in the limiting hole 14. It can be understood that the mounting part 16 and the corresponding frame body 10 of the limiting hole 14 are formed in the same process. The thickness of the mounting part 16 and the depth of the limiting hole 14 can be set to be unequal or equal. In addition, at least part of the side wall of the mounting part 16 can be spaced apart from the side wall (which can be understood as the hole wall) of the limiting hole 14, so as to facilitate the mounting part 16 to move to abut against the side wall of the limiting hole 14 under the action of external force.

[0039] It is understandable that, for the fixing bracket, the limiting hole 14 can be set as a through hole so that the fastener 20 can pass through; of course, the limiting hole 14 can also be set as a blind hole, and the fastener 20 can continue to pass through the corresponding solid part of the limiting hole 14 through the threaded through hole 12, for example, by using a fastener 20 in the form of a screw.

[0040] Corresponding to the frame body 10, a base box can be installed inside the mounting opening 31 of the fixing frame. The base box may include a locking fastener 310, which can be a sheet metal part, a rigid plastic part, etc. The locking fastener 310 may have the aforementioned mounting threaded hole 311, thereby forming an installation environment for the fixing frame (including the frame body 10). It is understood that the base box may not be installed inside the mounting opening 31 of the fixing frame. In addition, a nut can be provided on the locking fastener 310 to form the mounting threaded hole 311.

[0041] In this embodiment, when the installer uses a hand screwdriver, electric screwdriver, or other installation tools to tighten the fastener 20, the fastener 20 is screwed into the mounting threaded hole 311 in the mounting opening 31 of the fastener, and the fastener 20 presses against the threaded through hole 12 on the mounting member 16. As the fastener 20 continues to be screwed into the mounting threaded hole 311, the side wall of the mounting member 16 abuts against the side wall of the limiting hole 14, thereby dispersing the force between the fastener 20 and the frame body 10 from the threaded through hole 12 to the side wall of the limiting hole 14, avoiding stress concentration at the threaded through hole 12. This helps to reduce the local deformation of the frame body 10 at the threaded through hole 12, and helps to extend the overall service life of the fastener and the corresponding household appliance 30.

[0042] In some implementations, refer to Figure 3 and Figure 4 ,in Figure 3 Showing Figure 1 A partial sectional view at point BB. Figure 4 The corresponding Figure 1 A partial sectional view of the mounting component at point AA when it is not screwed into the enclosure space; the fastener 20 includes a threaded rod 21 and an abutment 22, the abutment 22 being located at the end of the threaded rod 21 away from the mounting threaded hole 311, for example, the abutment 22 being located at... Figure 3 Above. The threaded rod 21 can be a component with external threads and an overall rod shape; the fastener 20 can be a screw, bolt, etc., in which case the threaded rod 21 can be the threaded part of the screw or bolt, and the abutment 22 can be the nut of the screw or bolt. Of course, the abutment 22 can also be a rod segment, protrusion, or other structure, and then connected to the threaded rod 21 by welding, integral molding, or other methods.

[0043] Furthermore, the mounting member 16 has a first protrusion 11 protruding from the side facing the abutment 22, for example... Figure 3 , Figure 4The upper side of the mounting component 16 is provided with a first protrusion 11; the first protrusion 11 is located outside the threaded through hole 12, which can be understood as the first protrusion 11 being outside the hole wall surface of the threaded through hole 12, thereby avoiding interference with the helical engagement between the threaded rod 21 and the threaded through hole 12. In addition, the abutment body 22 abuts against the first protrusion 11; when the threaded rod 21 is screwed into the mounting threaded hole 311, the abutment body 22 is used to deform the first protrusion 11 and / or the abutment body 22 through the screwing action of the threaded rod 21 and the mounting threaded hole 311, including deforming one of the first protrusion 11 and the abutment body 22, and deforming both the first protrusion 11 and the abutment body 22; in addition, this deformation can be elastic deformation or plastic deformation.

[0044] In this embodiment, the deformed first protrusion 11 generates a reaction force to counteract the tightening force of the fastener 20; ultimately, the fastener 20 can be securely locked. Furthermore, since the tightening force of the fastener 20 is primarily absorbed and dissipated by the deformation of the first protrusion 11, the frame body 10 experiences less downward pulling force from the fastener 20. In contrast, the fixing frame primarily bears the radial force generated by the screwing in of the fastener 20, which attempts to push the fixing frame outward; as the foregoing analysis shows, this radial force is dispersed to the sidewall of the limiting hole 14 through the contact between the fastener 20 and the sidewall of the limiting hole 14, thereby helping to reduce local deformation of the frame body 10 at the threaded through hole 12.

[0045] When the first protrusion 11 undergoes plastic deformation due to the screwing action of the threaded rod 21 and the mounting threaded hole 311, the resistance generated by the first protrusion 11 can resist the screwing action of the fastener 20, which helps to control the deformation of the frame body 10, reduces the thickness requirement of the frame body 10, and thus facilitates the thin design of the frame body 10, the fixing frame, and the household appliances.

[0046] In some implementations, refer to Figure 3 and Figure 4 The side of the mounting member 16 facing away from the abutment body 22 is the mounting surface, for example, the bottom surface of the mounting member 16 in the figure is the mounting surface; each cross-section of the first protrusion 11 is perpendicular to the axis of the threaded through hole 12, for example, each cross-section of the first protrusion 11 in the figure is parallel to the horizontal plane. From the mounting surface to the abutment body 22, for example, along the upward direction in the figure, the area of ​​the cross-section of the first protrusion 11 gradually decreases, which can be understood as the first protrusion 11 being frustum-shaped or cone-shaped; of course, from the mounting surface to the abutment body 22, the area of ​​the cross-section of the first protrusion 11 can also gradually increase, which can be understood as the first protrusion 11 being inverted frustum-shaped or inverted cone-shaped.

[0047] In this embodiment, the cross-sectional area of ​​the first protrusion 11 gradually decreases or increases from the mounting surface to the abutment 22, which facilitates the rapid deformation of the first protrusion 11 through the portion with a smaller cross-sectional area. This allows for faster absorption and dissipation of the tightening force of the fastener 20, thereby improving the deformation of the frame body 10 caused by the fastener 20 during tightening and thus helping to maintain the stability of the frame body 10 during the tightening process of the fastener 20.

[0048] With the cross-sectional area of ​​the first protrusion 11 gradually decreasing from the mounting surface to the abutment 22, it is advantageous to concentrate and controllably cause deformation mainly in the top region of the first protrusion 11, thereby reducing the risk of accidental deformation of the first protrusion 11 interfering with the fastener 20. In some embodiments, the side of the first protrusion 11 facing away from the axis of the threaded through hole 12 may have a slope, so as to accommodate the deformation structure of the first protrusion 11 at the slope, thereby further reducing the risk of accidental deformation of the first protrusion 11 interfering with the fastener 20.

[0049] In some implementations, refer to Figure 4 The end face of the first protrusion 11 facing the abutment 22 is designated as a first flat surface 110. For example, the upper end of the first protrusion 11 in the figure is provided with the first flat surface 110. The first flat surface 110 can be understood as a relatively flat surface. The first flat surface 110 is constructed to abut the abutment 22, which helps to prevent the end of the first protrusion 11 from being too sharp and small and deforming prematurely.

[0050] In some implementations, refer to Figure 5 , Figure 6 and Figure 7 ,in Figure 5 A schematic diagram of the structure of the mounting component 16 in this embodiment is shown. Figure 6 A top view of the first protrusion 11 in this embodiment is shown. Figure 7 A side view of the first protrusion 11 in this embodiment is shown; wherein the first protrusion 11 can be made to form a first platform.

[0051] The parameters of the first platform are: A, the cross-sectional area of ​​the first platform; b, the width of the first flat surface 110; and h, the length of the first platform. For example, h = 0.4 mm and b = 0.1 mm can be used, then at the first flat surface 110... mm 2 .

[0052] The first protrusion 11 can be made of metal; specifically, it can be made of steel, such as Q235 steel. The yield strength of Q235 steel is 235 MPa, and its elastic modulus is 2.06 GPa. Furthermore, the number of first protrusions 11 can be eight.

[0053] Please see Figure 5 , Figure 6 and Figure 7 The calculation for the crushing and locking mechanism of the first protrusion 11 is as follows: Step 1: Using the formula for calculating the moment of inertia, calculate the slenderness ratio of the first protrusion 11: .

[0054] Where L is the effective length of the columnar structure; i is the radius of gyration of the column cross-section; and I is the moment of inertia of the cross-section about the buckling axis.

[0055] Step 2: Calculate the critical crushing stress of the first protrusion 11, which can be done using the Johnson formula for short columns:

[0056] .

[0057] in, The yield strength of the material. Where R is the radius from the central axis of the fastener 20 to the inner wall of the threaded through hole 12, B is the number of first protrusions 11, E is the elastic modulus of the material, F is the critical load on the cross-section, and P is the corresponding torque of the fastener 20. In one embodiment, please refer to... Figure 2 This allows for R=2mm and B=8.

[0058] Step 3: Calculate the structural shape to achieve the standard torque of 1.2 N·m: Based on actual needs Actual width requirement The height was reduced in, Therefore, by controlling the initial b and the inclined plane angle θ, the height L1 of the first protrusion 11 can be controlled to prevent it from being crushed.

[0059] In one embodiment, the slope angle of the first protrusion 11 is θ = 25°, b = 0.1, and b_s = 0.8; therefore, .

[0060] Therefore, it can be seen that the first protrusion 11 is crushed by the fastener 20 by 0.3mm, and the first protrusion 11 can resist the tightening torque of 1.2N·m, which is also the tightening torque usually used by the above-mentioned fixing bracket.

[0061] As can be seen from this embodiment, although the first protrusion 11 is small in volume, it can withstand considerable pressure before being flattened. Even when the first protrusion 11 is compressed by only a small distance, it can generate a large reaction force to balance the force exerted by the fastener 20. In one embodiment, when the first protrusion 11 is flattened by the fastener 20 by a distance of 0.3 mm, it can generate a force to resist a tightening torque equivalent to 1.2 N·m.

[0062] In some implementations, refer to Figure 3 , Figure 8 and Figure 9 ,in Figure 8 A schematic diagram of the fixing frame in this embodiment is shown. Figure 9 Showing Figure 8 A partial enlarged view at point D; the frame body 10 is provided with a receiving structure 15; along the axial direction of the threaded through hole 12, for example along the up and down direction in the figure, the abutment body 22 of the fastener 20 abuts against one side of the mounting member 16, for example against the upper side of the mounting member 16 in the figure; the receiving structure 15 abuts against the other side of the mounting member 16 to support the mounting member 16, for example against the lower side of the mounting member 16 in the figure, thereby improving the support stability of the mounting member 16.

[0063] In some embodiments, at least a portion of the receiving structure 15 may be supported by an elastic material, thereby facilitating the transfer of clamping force from the fastener 20 to the frame body 10, and thus facilitating the fixation of components such as the fixing frame and the wall that cooperates with the fixing frame. The portion of the receiving structure 15 supported by the elastic material may be achieved by having a relatively elongated shape.

[0064] In some implementations, refer to Figure 9 The receiving structure 15 includes a support arm 150 extending radially toward the mounting member 16 along the limiting hole 14 to abut against the side of the mounting member 16 facing away from the abutment body 22. For example, in Figure 9 In this embodiment, the support arm 150 is generally L-shaped, and the support arm 150 can extend from the inner wall of the aforementioned limiting hole 14 towards the center of the limiting hole 14; of course, the support arm 150 can also be arc-shaped, oblique straight-line-shaped, etc. The support arm 150 and the supporting structure 15 can be integrally formed with other parts of the frame body 10 or separately formed, and this embodiment does not limit this.

[0065] In this embodiment, the support arm 150 helps to make the structure 15 more flexible, which makes it easier to fix components such as the fixing frame and the wall that cooperates with the fixing frame.

[0066] In some implementations, refer to Figure 3 and Figure 9 The side wall of the limiting hole 14 is provided with a snap-fit ​​structure 18. Along the axial direction of the threaded through hole 12, for example, along the up-down direction in the figure, the snap-fit ​​structure 18 abuts against one side of the mounting member 16, for example, against the upper side of the mounting member 16; the receiving structure 15 abuts against the other side of the mounting member 16, for example, against the lower side of the mounting member 16. The snap-fit ​​structure 18 can be configured as a protrusion on the limiting hole 14, abutting arm, or other structures. The snap-fit ​​structure 18 can be integrally formed with other parts of the frame body 10 or separately formed. This embodiment does not impose any restrictions on this.

[0067] In this embodiment, the snap-fit ​​structure 18 can abut against the mounting member 16, thereby helping to prevent the mounting member 16 from coming off.

[0068] In some implementations, refer to Figure 3 and Figure 9 The snap-fit ​​structure 18 has an installation slope on the side opposite to the mounting threaded hole 311. For example, the upper surface of the snap-fit ​​structure 18 in the figure has this installation slope, which makes it easy to snap the mounting part 16 into the limiting hole 14.

[0069] In some implementations, combined Figure 9 And refer to Figure 10 and Figure 11 ,in Figure 10 This diagram illustrates a three-dimensional structure of the mounting bracket in this embodiment. Figure 11 Showing Figure 10 A partial sectional view at point CC; a mounting boss 17 is provided on the inner side of the limiting hole 14. The mounting boss 17 protrudes along the direction towards the axis of the limiting hole 14, which can be understood as the mounting boss 17 protruding from the hole wall of the limiting hole 14; wherein, refer to Figure 11 The inner side of the mounting boss 17 is enclosed to form a enclosure space 170.

[0070] Combination Figure 9 Along the axial direction of the limiting hole 14, for example along Figure 9In the vertical direction, at least part of the receiving structure 15 is provided on the side of the mounting boss 17 facing the mounting threaded hole 311, for example, on the lower side of the mounting boss 17; the mounting member 16 is pressed into the enclosure space 170 by the driving action of the fastener 20, and the mounting member 16 abuts against the receiving structure 15. In this embodiment, the mounting member 16 is pressed into the enclosure space 170 by the driving action of the fastener 20, so that after the mounting member 16 is installed in place, it can be limited by the mounting boss 17, thereby helping to prevent the mounting member 16 from moving accidentally.

[0071] In some implementations, combined Figure 9 The limiting hole 14 has a relief groove 101 in the direction of its axis. This can be understood as the relief groove 101 being provided on the hole wall of the limiting hole 14, extending outward from the hole wall. At least a portion of the relief groove 101 is spaced apart from the mounting boss 17, for example, spaced apart along the radial direction of the limiting hole 14. After the fastener 20 is screwed into the threaded through hole 12 and connected to the mounting threaded hole 311, the mounting member 16 rotates with the fastener 20. After the edge of the mounting member 16 enters the relief groove 101, it is pressed into the enclosure space 170 under the drive of the fastener 20.

[0072] During installation, the fastener 20 and the mounting part 16 are initially in contact. At this time, because the mounting part 16 is above the mounting boss 17 and the elastic support arm 150, it is not subjected to lateral force and is rotated by the fastener 20, slowly pressing the frame body 10. When tightened further, the force pressing the frame body 10 is greater than the force of the support arm 150, and the edge of the mounting part 16 rotates to be roughly flush with the edge of the mounting boss 17. The mounting part 16 then begins to fall into the enclosure space 170 inside the mounting boss 17. The side of the mounting part 16 is fixed by the mounting boss 17, the rotation is restricted, and it is finally tightened, pressing the frame body 10 against the bottom box and other components. When the mounting part 16 enters the enclosure space 170 inside the mounting boss 17, the rotational torque is transferred to the frame body 10.

[0073] Therefore, in the above embodiment, the mounting boss 17 can provide a large installation space for the mounting member 16 on the side opposite to the mounting threaded hole 311 (e.g., the upper part in the figure), which facilitates the installation of the mounting member 16; in addition, the enclosure space 170 inside the mounting boss 17 can effectively fix the installed member 16, which helps to prevent the installation member 16 from rotating accidentally.

[0074] In some implementations, combined Figure 6 The mounting component 16 is polygonal, such as a rectangle, triangle, pentagon, hexagon, etc.; at least one corner of the mounting component 16 is a side guard structure 162, which is chamfered or rounded. (Refer to...) Figure 10 , Figure 11 Along the radial direction of the limiting hole 14, for example along Figure 11 In the left and right directions, the limiting hole 14 has a movable gap 140 between the hole wall next to the relief groove 101 and the edge of the mounting part 16.

[0075] In some implementations, refer to Figure 10 , Figure 11 The limiting hole 14 can have two opposing first sidewalls 141, and the limiting hole 14 also has a second sidewall 142 adjacent to the two sidewalls. The mounting member 16 is provided with a first side portion 161 and a second side portion corresponding to the first sidewall 141 and the second sidewall 142, respectively, and there is a movable gap 140 between the first side portion 161 and the first sidewall 141. For example, the size of the movable gap 140 between the first sidewall 141 and the first side portion 161 of each limiting hole 14 is 0.1 to 3 mm, which can be understood as the single-sided gap between the limiting hole 14 and the first side portion 161 is 0.1 to 3 mm. For example, the mounting member 16 can be set as a rectangular plate structure, with a 1 mm gap between the first side portion 161 of the mounting member 16 and the first sidewall 141 of the limiting hole 14, so that the mounting member 16 has a 2 mm movable space in the length direction, thereby facilitating the adjustment of the position of the mounting member 16.

[0076] In this embodiment, there is a movable gap 140 between the wall of the limiting hole 14 and the edge of the mounting member 16, so that the mounting member 16 can adaptively make fine adjustments to its position within the limiting hole 14.

[0077] Understandably, when the installer inserts the fastener 20 into the threaded through hole 12 of the mounting part 16 and attempts to screw it into the mounting threaded hole 311 of the fastener 310, due to the movable gap 140 between the side wall of the limiting hole 14 and the mounting part 16, the mounting part 16 can adaptively make minor position adjustments within the limiting hole 14 through the coaxial alignment effect when the fastener 20 enters the mounting threaded hole 311; correspondingly, the central axis of the threaded through hole 12 on the fastener 20 will also be aligned with the central axis of the mounting threaded hole 311.

[0078] In some implementations, refer to Figure 12 and Figure 13 ,in Figure 12 This diagram illustrates a three-dimensional structure of the mounting component 16 in this embodiment. Figure 13 A top view of the mounting component 16 in this embodiment is shown; combined with Figure 3 The mounting component 16 has a second protrusion 13 protruding from the side facing the abutment 22, for example... Figure 12The upper surface of the mounting component 16 is provided with the second protrusion 13; wherein, the second protrusion 13 is located outside the threaded through hole 12, which can be understood as the second protrusion 13 being outside the hole wall of the threaded through hole 12, thereby avoiding interference with the helical engagement between the threaded rod 21 and the threaded through hole 12.

[0079] Furthermore, on the surface of the mounting member 16 facing the abutment 22, for example on Figure 12 On the upper surface of the mounting component 16, the height of the second protrusion 13 is less than the height of the first protrusion 11, which can be understood as the second protrusion 13 being relatively shorter; when the threaded rod 21 is screwed into the mounting threaded hole 311, the abutment 22 causes the first protrusion 11 to undergo plastic deformation, thereby causing the abutment 22 to press against the second protrusion 13. This can be understood as the abutment 22 first crushing the first protrusion 11 and then pressing against the second protrusion 13.

[0080] In this embodiment, when the installer tightens the fastener 20, the abutment 22 of the fastener 20 first contacts the first protrusion 11, which is positioned higher. As the fastener 20 continues to be screwed into the second mounting threaded hole 311, the pressure applied by the abutment 22 forces the first protrusion 11 to crush. The crushing process continues until the first protrusion 11 is compressed to a sufficiently low position. At this point, the height difference between the crushed height of the first protrusion 11 and the second protrusion 13 is zero, and the bottom surface of the abutment 22 falls onto the top surface of the second protrusion 13. The abutment 22 presses against both the first protrusion 11 and the second protrusion 13, significantly increasing the frictional force, thereby facilitating the stopping of the fastener 20 and limiting its further screwing in.

[0081] In some embodiments, the mounting member 16 is provided with at least two first protrusions 11 and at least two second protrusions 13, which are alternately arranged along the circumferential direction of the threaded through hole 12, thereby making it more advantageous to stop the fastener 20.

[0082] In some embodiments, multiple second protrusions 13 may be provided coaxially with the first protrusion 11, and the second protrusions 13 may be configured as annular bosses. For example, multiple second protrusions 13 may be arranged at equal intervals along the circumferential direction of the threaded through hole 12, which is more conducive to stopping the fastener 20. The second protrusions 13 may be configured as circular protrusions or the like, which is more conducive to stopping the fastener 20.

[0083] In some embodiments, the height difference between the second protrusion 13 and the first protrusion 11 can be 0.1 to 0.5 mm, which is more conducive to stopping the fastener 20; for example, the height difference between the second protrusion 13 and the surface of the frame body 10 can be 0.1 to 0.3 mm, and correspondingly the height difference between the first flat surface 110 of the first protrusion 11 and the surface of the frame body 10 can be 0.3 to 0.7 mm.

[0084] In some embodiments, the mounting member 16 is provided with at least one first protrusion 11 and at least one second protrusion 13, which are arranged along the circumferential direction of the threaded through hole 12. Projected along the axial direction of the threaded rod 21, on a preset circumference, the first protrusion 11 and the abutment body 22 have a first abutment arc length, and the second protrusion 13 and the abutment body 22 have a second abutment arc length. The sum of the first abutment arc length and the second abutment arc length is greater than or equal to 40% and less than or equal to 60% of the circumference of the preset circumference. The first protrusion 11 and the second protrusion 13 can be arranged on the outer edge of the threaded through hole 12 with the center of the threaded through hole 12 as the center.

[0085] In this embodiment, the ratio of the sum of the first abutment arc length and the second abutment arc length to the circumference of the preset circumference is greater than or equal to 40% and less than or equal to 60%. The first protrusion 11 and the second protrusion 13 can provide greater frictional force, but can also avoid jamming due to excessive contact area.

[0086] The first protrusion 11 and the second protrusion 13 can be integrally formed with the mounting part 16; for example, the first protrusion 11, the second protrusion 13 and the mounting part 16 can be made of metal material, thereby providing greater friction to the abutment body 22 of the fastener 20 and making it easier to stop.

[0087] In some implementations, refer to Figure 14 ,in Figure 14 A side view of the mounting member 16 in this embodiment is shown; the end face of the second protrusion 13 facing the abutment 22 is set as a second flat surface, which is configured to abut the abutment 22 to withstand the pressure applied by the abutment 22, thereby facilitating the increase of friction through the second flat surface, which is more conducive to stopping the fastener 20.

[0088] In some implementations, refer to Figure 15 and Figure 16 ,in Figure 15 This diagram illustrates a three-dimensional structure of the mounting bracket in this embodiment. Figure 16 A three-dimensional structural schematic diagram of the mounting member 16 in this embodiment is shown; the frame body 10 includes a cylindrical body 190, the interior of which forms the aforementioned threaded through hole 12; the cylindrical body 190 includes at least two deformable portions 19 spaced apart in the circumferential direction, wherein adjacent deformable portions 19 can be separated from each other by a deformation groove 191 in the form of a notch or the like. Furthermore, at least one deformable portion 19 has the aforementioned first protrusion 11 at one end facing the abutment body 22; along the radial direction of the threaded through hole 12, for example along... Figure 16In the horizontal direction, the first protrusion 11 has a bevel on the side facing away from the threaded through hole; when the fastener 20 is connected to the mounting threaded hole 311, the fastener 20 presses the bevel of the first protrusion 11 so that the corresponding deformed part 19 moves toward the center of the threaded through hole 12.

[0089] When the installer tightens the fastener 20, the threaded rod 21 screws into the mounting threaded hole 311, and the abutment 22 of the fastener 20 presses against the first protrusion 11. At this time, the pressure applied by the abutment 22 acts on the inclined surface of the first protrusion 11, forcing the deformable part 19 to bend or move towards the center of the threaded through hole 12. Since adjacent deformable parts 19 are separated, each deformable part 19 has a certain independent deformation capacity; therefore, under the pressure generated by the screwing action of the threaded rod 21 and the mounting threaded hole 311, one or more deformable parts 19 overcome the elastic resistance of their own material under the pressure applied by the abutment 22, and deform towards the central axis of the cylinder 190, so that the cylinder 190 can be closed as a whole to hold the fastener 20 tightly, thereby enhancing the stability of the connection between the fastener 20 and the deformable part 19. At the same time, the deformable part 19 also absorbs part of the force from the fastener 20 through deformation, so as to ensure that the deformation of the frame body 10 is controllable.

[0090] In some implementations, refer to Figure 15 The frame body 10 is provided with at least two limiting holes 14 and at least two mounting parts 16, and the fasteners 20, mounting parts 16, and limiting holes 14 are connected in a one-to-one correspondence. For example, the at least two limiting holes 14 can be symmetrically distributed on the frame body 10 to balance the tension generated when the fasteners 20 are tightened and various external forces during use, thereby reducing the undesirable deformation such as twisting and bending of the frame body 10 caused by uneven force, and ensuring that the frame body 10 is flat and firm after installation.

[0091] In addition, at least two limiting holes 14 and at least two mounting pieces 16 help to prevent the frame body 10 from rotating due to the fasteners 20 during the installation of the fasteners 20.

[0092] Among them, reference Figure 17 , Figure 18 , Figure 19 and Figure 20 ,in Figure 17 A cross-sectional view of the frame body 10 is shown when the fastener 20 is screwed into the threaded through hole 12 in the above embodiment. Figure 18 A cross-sectional view of the fixing bracket is shown when the fastener 20 is screwed into the mounting threaded hole 311 in the above embodiment. Figure 19 A cross-sectional view of the fixing frame is shown when the fastener 20 is pressed against the first protrusion 11 in the above embodiment. Figure 20A cross-sectional view of the fixing bracket is shown when the fastener 20 crushes the first protrusion 11 in the above embodiment; the fixing bracket in the above embodiment is used with reference to Figure 17 The fastener 20 is first screwed into the threaded through hole 12 of the mounting part 16 by an electric screwdriver or other installation tool. At the same time, the fastener 20 is subjected to downward pressure, so the fastener 20 presses the fixing bracket against the wall or other structure through the mounting part 16; see reference. Figure 18 The fastener 20 is further screwed downwards into the mounting threaded hole 311 of the mounting bracket mounting opening. The distance between the mounting part 16 and the corresponding entity (e.g., nut, plate) of the mounting threaded hole 311 is locked at H, and the position of the mounting bracket is fixed; refer to Figure 19 The fastener 20 is screwed further downwards, and the bottom of the abutment 22 of the fastener 20 is attached to the first protrusion 11 on the mounting piece 16; see reference. Figure 20 As the fastener 20 is screwed further down, the bottom of the abutment body 22 of the fastener 20 crushes the first protrusion 11 with a preset crushing amount (for example, the preset crushing amount is 0.3mm, corresponding to a torque of 1.2N·M for installation tools such as electric screwdrivers, which is then stopped). At this time, the bottom of the abutment body 22 of the fastener 20 can abut against the second protrusion 13 and further stop. Figure 18 The distance H in the middle is reduced to H-preset crushing amount (e.g. H-0.3mm), the frame body 10 deforms by the preset crushing amount (e.g., deformation of 0.3mm), the frame body 10 is compressed and the deformation amount is controllable.

[0093] It is understood that since the household appliances adopt all the technical solutions of all the above-mentioned mounting bracket embodiments, they have at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0094] The above description is merely an exemplary embodiment of this application and does not limit the scope of protection of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A fixing frame, characterized in that, The fixing bracket is used to assemble with the fixing bracket mounting port (31), and the fixing bracket mounting port (31) is provided with a mounting threaded hole (311). The fixing frame includes a frame body (10) and a mounting component (16). The mounting component (16) is provided with a threaded through hole (12) for fasteners (20) to pass through. The frame body (10) is provided with a limiting hole (14). The mounting component (16) is separately provided or integrally provided in the limiting hole (14). The sidewall of the limiting hole (14) is configured such that, when the fastener (20) is screwed into the threaded through hole (12) and connected to the mounting threaded hole (311), the sidewall of the mounting member (16) abuts against the sidewall of the limiting hole (14).

2. The fixing frame as described in claim 1, characterized in that, The fastener (20) includes a threaded rod (21) and an abutment (22), the abutment (22) being disposed at the end of the threaded rod (21) away from the mounting threaded hole (311); The mounting component (16) has a first protrusion (11) protruding from the side facing the abutment (22). The first protrusion (11) is located outside the threaded through hole (12), and the abutment (22) abuts against the first protrusion (11). When the threaded rod (21) is engaged with the mounting threaded hole (311), the abutment (22) is used to deform the first protrusion (11) and / or the abutment (22) by the engagement of the threaded rod (21) with the mounting threaded hole (311).

3. The fixing frame as described in claim 2, characterized in that, The side of the mounting component (16) facing away from the abutment (22) is the mounting surface, and each cross section of the first protrusion (11) is perpendicular to the axis of the threaded through hole (12). From the mounting surface to the abutment (22), the cross-sectional area of ​​the first protrusion (11) gradually decreases or gradually increases.

4. The fixing frame as described in claim 3, characterized in that, The end face of the first protrusion (11) facing the abutment (22) is set as a first flat surface (110), and the first flat surface (110) is configured to abut the abutment (22).

5. The fixing frame as described in any one of claims 1 to 4, characterized in that, The frame body (10) is provided with a receiving structure (15). Along the axial direction of the threaded through hole (12), the abutment body (22) of the fastener (20) abuts against one side of the mounting part (16), and the receiving structure (15) abuts against the other side of the mounting part (16) to support the mounting part (16).

6. The fixing frame as described in claim 5, characterized in that, The side wall of the limiting hole (14) is provided with a snap-fit ​​structure (18). Along the axial direction of the threaded through hole (12), the snap-fit ​​structure (18) abuts against one side of the mounting part (16), and the receiving structure (15) abuts against the other side of the mounting part (16).

7. The fixing frame as described in claim 5, characterized in that, The receiving structure (15) includes a support arm (150) extending toward the mounting member (16) in the radial direction of the limiting hole (14) to abut against the side of the mounting member (16) away from the abutment body (22).

8. The fixing frame as described in claim 5, characterized in that, The inner side of the limiting hole (14) is provided with a mounting boss (17), the mounting boss (17) is provided to protrude along the direction of the axis of the limiting hole (14), and the inner side of the mounting boss (17) encloses to form a retaining space (170); along the axial direction of the limiting hole (14), at least part of the receiving structure (15) is provided on the side of the mounting boss (17) facing the mounting threaded hole (311); The mounting component (16) is pressed into the enclosure space (170) by the driving action of the fastener (20), and the mounting component (16) abuts against the receiving structure (15).

9. The fixing frame as described in claim 8, characterized in that, The limiting hole (14) is provided with a relief groove (101) in the direction of the axis of the limiting hole (14), and at least part of the relief groove (101) is spaced apart from the mounting boss (17). After the fastener (20) is screwed into the threaded through hole (12) and connected to the mounting threaded hole (311), the mounting part (16) rotates with the fastener (20); after the edge of the mounting part (16) enters the relief groove (101), it is pressed into the enclosure space (170) under the drive of the fastener (20).

10. The fixing frame as described in claim 9, characterized in that, The mounting component (16) is polygonal, and at least one corner of the mounting component (16) is a side guard structure (162), which is chamfered or rounded; along the radial direction of the limiting hole (14), the limiting hole (14) has an movable gap (140) between the hole wall next to the relief groove (101) and the edge of the mounting component (16).

11. The fixing frame as described in any one of claims 2 to 4, characterized in that, The mounting member (16) has a second protrusion (13) protruding from the side facing the abutment (22), and the second protrusion (13) is located outside the threaded through hole (12); on the surface of the mounting member (16) facing the abutment (22), the height of the second protrusion (13) is less than the height of the first protrusion (11); When the threaded rod (21) is engaged with the mounting threaded hole (311), the abutment (22) causes the first protrusion (11) to undergo plastic deformation, thereby causing the abutment (22) to press against the second protrusion (13).

12. The fixing frame as described in claim 11, characterized in that, The mounting component (16) is provided with at least two first protrusions (11) and at least two second protrusions (13), and the first protrusions (11) and the second protrusions (13) are alternately arranged along the circumferential direction of the threaded through hole (12).

13. The fixing frame as described in claim 11, characterized in that, The mounting component (16) is provided with at least one first protrusion (11) and at least one second protrusion (13), and the first protrusion (11) and the second protrusion (13) are arranged along the circumferential direction of the threaded through hole (12); Projecting along the axial direction of the threaded rod (21), on a preset circumference, the first protrusion (11) and the abutment (22) have a first abutment arc length, and the second protrusion (13) and the abutment (22) have a second abutment arc length; the sum of the first abutment arc length and the second abutment arc length is greater than or equal to 40% and less than or equal to 60% of the circumference of the preset circumference.

14. The fixing frame as described in claim 12, characterized in that, The end face of the second protrusion (13) facing the abutment (22) is configured as a second flat surface, which is configured to abut the abutment (22) to withstand the pressure applied by the abutment (22).

15. The fixing frame as described in any one of claims 2 to 4, characterized in that, The frame body (10) includes a cylindrical body (190), and the threaded through hole (12) is formed inside the cylindrical body (190); the cylindrical body (190) includes at least two deformable portions (19) spaced apart in the circumferential direction, and at least one of the deformable portions (19) has the first protrusion (11) at one end facing the abutment (22). Along the radial direction of the threaded through hole (12), the first protrusion (11) has a bevel on the side facing away from the threaded through hole; when the fastener (20) is connected to the mounting threaded hole (311), the fastener (20) presses the bevel of the first protrusion (11) so that the corresponding deformed part (19) moves toward the center of the threaded through hole (12).

16. The fixing frame as described in any one of claims 1 to 4, characterized in that, The frame body (10) is provided with at least two limiting holes (14) and at least two mounting parts (16), and the fasteners (20), the mounting parts (16) and the limiting holes (14) are connected in a one-to-one correspondence.

17. A household appliance, characterized in that, The household appliance includes a mounting bracket as described in any one of claims 1 to 16.

18. The household appliance as described in claim 17, characterized in that, The household appliance is a wall switch or a wall socket.

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