Connecting structure of metal outer shell and plastic inner shell of fan

Abstract

The utility model relates to the technical field of household appliance manufacturing, in particular to a connecting structure of a metal outer shell and a plastic inner shell of a fan. The connecting structure for the metal outer shell and the plastic inner shell of the fan specifically comprises the metal outer shell and the plastic inner shell, the metal outer shell wraps the plastic inner shell; a plurality of buckles are arranged on the annular outer wall of the plastic inner shell, the metal outer shell is provided with an inward annular folded edge, and the annular folded edge is matched with the buckles in an abutting mode. During installation, the plastic inner shell is pressed into the metal outer shell, the annular folded edge of the metal outer shell clamps the buckle on the outer wall of the plastic inner shell, the stability of the connection structure is guaranteed through buckle connection of the annular folded edge and the buckle, and under the condition that it is guaranteed that the appearance of a product is not changed, bonding uncertainty caused by failure due to the fact that an adhesive is independently used is avoided; meanwhile, the use cost of the adhesive is also reduced. The utility model has the advantage that the metal outer shell and the plastic inner shell are stably connected.

Description

Technical Field

[0001] This utility model relates to the field of home appliance manufacturing technology, and in particular to a connection structure between a fan's metal outer shell and a plastic inner shell. Background Technology

[0002] Fans typically consist of a metal outer shell and a plastic inner shell. During installation, adhesive is applied between the metal outer shell and the plastic inner shell for secure bonding. During operation, the rapid rotation of the fan blades causes vibration in the fan casing. After prolonged use, this can easily lead to instability, adhesive failure, and ultimately, separation or even detachment of the metal outer shell from the plastic inner shell.

[0003] Therefore, a connection structure between the metal outer shell and the plastic inner shell of a fan is provided to address the shortcomings of the existing technology. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a connection structure between the metal outer shell and the plastic inner shell of a fan, which aims to solve the problem that the metal outer shell and the plastic inner shell connected by adhesive are prone to falling off.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A connection structure between a metal outer shell and a plastic inner shell for a fan includes: a metal outer shell and a plastic inner shell;

[0007] The metal outer shell encloses the plastic inner shell;

[0008] The plastic inner shell has several buckles on its annular outer wall, and the metal outer shell has an inward annular folded edge, which abuts against the buckles.

[0009] As a further improvement to the technical solution of this utility model, the metal outer shell and the plastic inner shell are interference-fitted.

[0010] As a further improvement to the technical solution of this utility model, the buckle is provided with a guide slope, which is used to guide the installation of the metal outer shell and the plastic inner shell.

[0011] As a further improvement to the technical solution of this utility model, the annular fold is less than 90°, and the top of the buckle is adapted to the annular fold.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In the connection structure between the metal outer shell and the plastic inner shell of the fan provided by this utility model, during installation, the plastic inner shell is pressed into the metal outer shell. The annular folded edge of the metal outer shell engages with the buckle on the outer wall of the plastic inner shell. The connection between the annular folded edge and the buckle ensures the stability of the connection structure. This avoids the bonding uncertainty caused by adhesive failure when using adhesive alone, while also reducing adhesive costs, and ensures that the product appearance remains unchanged. The connection structure between the metal outer shell and the plastic inner shell of this utility model features a stable connection between the two. Attached Figure Description

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0015] Figure 1 This is a three-dimensional structural diagram of the metal outer shell and plastic inner shell of the fan of this utility model;

[0016] Figure 2 This is a cross-sectional view of Embodiment 1 of this utility model;

[0017] Figure 3 This is a cross-sectional view of Embodiment 2 of this utility model;

[0018] Figure 4 This is a cross-sectional view of Embodiment 3 of this utility model;

[0019] Figure 5 yes Figure 4 A magnified structural diagram of point A in the middle.

[0020] In the picture:

[0021] 1. Metal casing; 11. Circular folded edge; 111. Protrusion;

[0022] 2. Plastic inner shell; 21. Buckle; 211. Guide slope; 212. Groove;

[0023] 3. Adhesives. Detailed Implementation

[0024] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0025] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0026] Reference Figures 1 to 5 A connection structure between a fan metal outer shell 1 and a plastic inner shell 2, comprising a metal outer shell 1 and a plastic inner shell 2;

[0027] The metal outer shell 1 encloses the plastic inner shell 2; the annular outer wall of the plastic inner shell 2 is provided with several buckles 21, and the metal outer shell 1 is provided with an inward annular folded edge 11, which abuts and cooperates with the buckles 21.

[0028] During installation, the plastic inner shell 2 is pressed into the metal outer shell 1. The annular folded edge 11 of the metal outer shell 1 engages with the buckle 21 on the outer wall of the plastic inner shell 2. The connection between the annular folded edge 11 and the buckle 21 ensures the stability of the connection structure. This avoids the bonding uncertainty caused by the failure of adhesive 3 when used alone, while also reducing the cost of adhesive 3, and ensuring that the product appearance remains unchanged. The connection structure between the metal outer shell 1 and the plastic inner shell 2 of this invention features a stable connection between the metal outer shell 1 and the plastic inner shell 2.

[0029] In one embodiment, the metal outer shell 1 and the plastic inner shell 2 are interference-fitted, with the inner diameter of the metal outer shell 1 being smaller than the outer diameter of the plastic inner shell 2. The plastic inner shell 2 is flexible and is secured by the clip 21 after being pressed into the metal outer shell 1, making it difficult for it to fall off.

[0030] In one embodiment, refer to Figure 2 As shown, the buckle 21 is provided with a guide slope 211, which is used to guide the installation of the metal outer shell 1 and the plastic inner shell 2. Preferably, the angle of the guide slope 211 is 15°. The conical transition formed by the guide slope 211 avoids the annular fold 11 from rubbing and damaging the outer wall of the plastic inner shell 2.

[0031] Preferably, an adhesive 3, which is epoxy resin or structural adhesive, can be applied to the bottom inner side of the metal outer shell 1 and the bottom outer side of the plastic inner shell 2. The adhesive 3 can also be applied to the connection between the annular fold 11 and the buckle 21.

[0032] In Example 2, refer to Figure 3 As shown, the difference between this embodiment and embodiment 1 is that the annular fold 11 is less than 90°, and the top of the buckle 21 is adapted to the annular fold 11, effectively preventing the annular buckle 21 from falling off.

[0033] In Example 3, refer to Figures 4-5 As shown, the difference between this embodiment and embodiment 1 is that the annular folded edge 11 is provided with a protrusion 111, and the top of the buckle 21 is provided with a groove 212 that matches the protrusion 111, which effectively prevents the annular buckle 21 from falling off.

[0034] Other aspects of the connection structure between the fan's metal outer shell and the plastic inner shell described in this utility model are found in the prior art and will not be repeated here.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

[0036] 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.

[0037] 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.

Claims

1. A connection structure between a fan's metal outer shell and a plastic inner shell, characterized in that, include: Metal outer shell and plastic inner shell; The metal outer shell encloses the plastic inner shell; The plastic inner shell has several buckles on its annular outer wall, and the metal outer shell has an inward annular folded edge, which abuts against the buckles.

2. The connection structure between the metal outer shell and the plastic inner shell of a fan according to claim 1, characterized in that, The metal outer shell and the plastic inner shell are interference-fitted.

3. The connection structure between the metal outer shell and the plastic inner shell of a fan according to claim 1, characterized in that, The buckle is provided with a guide slope, which is used to guide the installation of the metal outer shell and the plastic inner shell.

4. The connection structure between the metal outer shell and the plastic inner shell of a fan according to claim 1, characterized in that, The annular fold is less than 90°, and the top of the buckle is adapted to the annular fold.

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