Protective film and electric appliance

Abstract

The utility model relates to a protective film and an electric appliance, and the protective film comprises a base part which is disposed on the outer side of a housing, covers an insertion hole, and covers at least one of a horn hole and an air hole, the base part is provided with a first opening matched with the insertion hole in shape, and the first opening is communicated with the insertion hole; the connecting part is arranged on the side, facing the shell, of the base part, the base part is connected with the outer side of the shell through the connecting part, the covering area of the protective film on the shell can be increased, meanwhile, the contact area of the connecting part and the outer side of the shell is increased, and therefore the bonding force is improved, the protective film is stably connected to the outer side of the shell, and the service life of the protective film is prolonged. Abrasion of the appearance of the shell caused by plugging and unplugging of the testing head in the testing process is avoided.

Description

Technical Field

[0001] This application relates to the field of consumer electronics technology, and more particularly to a protective film and an electrical appliance. Background Technology

[0002] Currently, consumer electronics products such as mobile phones and Bluetooth headsets require multiple plug-in / unplug tests during assembly and testing to check the functionality of the product's connectors.

[0003] In related technologies, the charging port protective film used only covers the plug hole. However, due to the small area of ​​the protective film, it is easy for the film to peel up or fall off naturally. If adhesive is added, the adhesion will be too strong, which will increase the proportion of defective residual adhesive and result in poor product appearance. Utility Model Content

[0004] This application provides a protective film and an electrical appliance to solve the existing technical problems.

[0005] In a first aspect, this application provides a protective film for protecting electrical appliances. The electrical appliance includes a housing, which has a connector hole, a vent hole, and a vent. The protective film includes:

[0006] The base portion is disposed on the outside of the housing. The base portion covers the insertion hole and covers at least one of the horn hole and the vent hole. The base portion is provided with a first opening that matches the shape of the insertion hole and communicates with the insertion hole.

[0007] A connecting part is provided on the side of the base part facing the shell, and the base part is connected to the outside of the shell through the connecting part.

[0008] In one possible implementation, a blue membrane is provided on the outer side of the shell, and the base is connected to the blue membrane through a connecting part.

[0009] In one possible implementation, the blue membrane is provided with a second opening communicating with the plug hole, and there is a one-sided gap between the second opening and the plug hole, the one-sided gap being less than or equal to 0.25 mm.

[0010] In one possible implementation, the blue membrane has a first orthographic projection area on the housing, and the connecting part has a second orthographic projection area on the housing, the second orthographic projection area being smaller than the first orthographic projection area.

[0011] In one possible implementation, the circumference of the first opening is smaller than the circumference of the insertion hole, and the base portion has multiple cuts at the first opening, with the multiple cuts spaced apart around the circumferential direction of the first opening.

[0012] In one possible implementation, the protective film also includes multiple inward folds that connect to the edge of the cut.

[0013] In one possible implementation, the first opening is a waist-shaped structure formed by an arc segment and a straight segment, with the cut located at the junction of the arc segment and the straight segment; and / or, the cut is located on the arc segment.

[0014] In one possible implementation, the thickness of the base portion is set to 0.15mm-0.25mm.

[0015] In one possible implementation, the protective film also includes a tear-off portion disposed at the edge of the substrate portion.

[0016] Secondly, this application also provides an electrical appliance, including a housing and a protective film as described above.

[0017] The technical solutions provided in this application have the following advantages compared with the prior art:

[0018] The protective film and electrical appliance provided in this application embodiment include a base portion and a connecting portion. The base portion is connected to the outer side of the housing via the connecting portion, protecting the housing of the electrical appliance during testing and preventing wear and tear on the housing caused by test head misalignment, thus avoiding damage to the appearance. Since the base portion covers the insertion hole and at least one of the flare hole and vent hole, the coverage area of ​​the protective film on the housing is maximized, while the contact area between the connecting portion and the outer side of the housing is increased, thereby improving adhesion and ensuring a stable connection of the protective film to the outer side of the housing, preventing wear and tear on the housing appearance caused by test head insertion and removal during testing. During the insertion and removal test of the insertion hole, the test head of the testing equipment passes through the first opening and the insertion hole sequentially, and then is inserted into the receiving cavity. When the test head passes through the first opening, the edge portion of the base portion at the first opening is pushed by the test head, folding towards the inner wall of the insertion hole and abutting against the inner wall of the insertion hole, thereby preventing wear and tear on the housing and the inner wall of the insertion hole caused by the test head. In addition, since the base portion covers the insertion hole, the base portion covers at least one of the horn hole and the vent hole, the area of ​​the base portion is large. The test head abuts against the side of the base portion away from the shell, and the edge of the base portion will not interfere with the test head. This increases the sealing area of ​​the airtightness test, improves the stability of the test, and avoids retesting due to interference from the edge of the protective film.

[0019] The appliance includes a housing and a protective film as described above, and therefore naturally possesses the technical effects of the aforementioned protective film. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0023] Figure 1 A perspective view of an electrical appliance provided in an embodiment of this application;

[0024] Figure 2 A three-dimensional protective film provided in the embodiments of this application Figure 1 ;

[0025] Figure 3 for Figure 2 The protective film shown in three dimensions Figure 2 ;

[0026] Figure 4 for Figure 1 Exploded view of the structure of Zhongdian Electric;

[0027] Figure 5 for Figure 4 A three-dimensional view of the electrical appliance is shown;

[0028] Figure 6 This is a schematic diagram showing the connection between the protective film and the electrical appliance provided in an embodiment of this application;

[0029] Figure 7 for Figure 3 The front view of the protective film is shown.

[0030] Figure 8 for Figure 7 A cross-sectional view along the AA direction;

[0031] Figure 9 for Figure 8 Enlarged diagram of section B;

[0032] Figure 10 A front view of a protective film provided in another embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100. Protective film;

[0035] 1. Base section; 11. First opening; 111. Arc segment; 112. Straight segment; 12. Cut; 13. Third opening; 14. Fourth opening; 2. Connecting part; 3. Inward fold; 4. Tear handle;

[0036] 200. Electrical appliance; 210. Housing; 211. Plug-in hole; 212. Horn hole; 213. Vent hole; 220. Blue film; 221. Second opening. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0039] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0040] In related technologies, the charging port protective film used only covers the plug hole. However, due to the small area of ​​the protective film, it is easy for the protective film to naturally peel up or fall off. If adhesive is added, the adhesion force will be too large, which will increase the proportion of defective residual adhesive, resulting in poor product appearance.

[0041] In addition, during the airtightness test, some test heads of the test equipment need to come into contact with the vents and horn holes of the electronic product. Especially when the distance between the vent and the plug hole, or the distance between the horn hole and the plug hole, is small, interference occurs between the protective film and the test head. The test head will come into contact with the edge of the protective film. Since the protective film has a certain thickness, there is a step between the test head and the vent or horn hole, which affects the stability of the test data.

[0042] To address the technical problems of existing protective films having small areas, being prone to peeling or falling off, and having excessive adhesive leading to a higher proportion of undesirable residue and poor product appearance, this application provides a protective film and an electrical appliance. The protective film includes a base portion and a connecting portion. The base portion is disposed on the outer side of the housing, covering the insertion hole and at least one of a flare hole and a vent hole. This maximizes the coverage area of ​​the protective film on the housing and increases the contact area between the connecting portion and the outer side of the housing, thereby improving adhesion and ensuring a stable connection of the protective film to the outer side of the housing. This prevents wear and tear on the housing surface caused by the insertion and removal of the test head during testing.

[0043] like Figure 1 As shown, this application provides a protective film 100, which protects the electrical appliance 200 from wear and tear by the testing equipment during assembly and testing. The electrical appliance 200 includes a housing 210, which has a plug-in hole 211, a speaker hole 212, and a vent hole 213. Generally, the housing 210 has an accommodating cavity, and the plug-in hole 211 extends from the accommodating cavity to the outside of the housing 210. The plug-in hole 211 can be configured as a USB interface such as Type-A, Type-B, Type-C, miniUSB, or microUSB to realize functions such as charging and data transmission. The electrical appliance 200 has a speaker inside, and sound can be transmitted and played out through the speaker hole 212. By providing the vent hole 213, air can circulate, preventing air pressure from suffocating and causing deformation of the speaker diaphragm, resulting in better bass performance.

[0044] like Figures 2 to 3As shown, the protective film 100 includes a base portion 1 and a connecting portion 2. The base portion 1 is disposed on the outer side of the housing 210, covering the insertion hole 211, and covering at least one of the horn hole 212 and the vent hole 213. The base portion 1 is provided with a first opening 11 that matches the shape of the insertion hole 211, and the first opening 11 communicates with the insertion hole 211. The connecting portion 2 is disposed on the side of the base portion 1 facing the housing 210, and the base portion 1 is connected to the outer side of the housing 210 through the connecting portion 2.

[0045] The base portion 1 covers the insertion hole 211, and the base portion 1 covers at least one of the flared hole 212 and the vent hole 213. Specifically, in one example, the base portion 1 covers both the insertion hole 211 and the flared hole 212; in another example, the base portion 1 covers both the insertion hole 211 and the vent hole 213; in yet another example, such as Figure 1 As shown, the base part 1 simultaneously covers the insertion hole 211, the vent hole 213 and the horn hole 212.

[0046] Understandably, the base portion 1 is connected to the outside of the housing 210 via the connecting portion 2, protecting the housing 210 of the electrical appliance 200 during testing and preventing wear and tear on the housing 210 due to test head misalignment, thus avoiding cosmetic damage. Since the base portion 1 covers the insertion hole 211 and at least one of the horn hole 212 and the vent hole 213, the coverage area of ​​the protective film 100 on the housing 210 is maximized, while simultaneously increasing the contact area between the connecting portion 2 and the outside of the housing 210, thereby enhancing adhesion and ensuring a stable connection of the protective film 100 to the outside of the housing 210. This prevents wear and tear on the housing 210 caused by test head insertion and removal during testing. During the insertion / removal test of the insertion hole 211, the test head of the testing equipment passes sequentially through the first opening 11 and the insertion hole 211, and then is inserted into the receiving cavity. When the test head passes through the first opening 11, the edge portion of the base portion 1 at the first opening 11 is pushed by the test head, and then folds towards the inner wall of the insertion hole 211, and abuts against the inner wall of the insertion hole 211, thereby avoiding wear of the housing 210 and the inner wall of the housing 210 on the insertion hole 211 by the test head. In addition, since the base portion 1 covers the insertion hole 211, and the base portion 1 covers at least one of the horn hole 212 and the vent hole 213, the area of ​​the base portion 1 is large. The test head abuts against the side of the base portion 1 away from the housing 210, and the edge of the base portion 1 will not interfere with the test head, increasing the sealing area of ​​the airtightness test, improving the stability of the test, and avoiding retesting due to interference from the edge of the protective film 100.

[0047] It should be noted that the substrate 1 is a sheet made of thermoplastic resin, for example, polyethylene (PE). The connecting part 2 can be made of pressure-sensitive adhesive (PSA).

[0048] In the prior art, a blue film 220 is generally provided on the outer side of the housing 210. If there are air bubbles between the blue film 220 and the housing 210, after the test head of the testing equipment is connected to the insertion hole 211, part of the air bubble may be pressed down by the test head, while the other part may be exposed on the outside of the test head, which will affect the accuracy of the airtightness test. Therefore, in order to cooperate with the airtightness test, the single-sided gap between the blue film 220 and the insertion hole 211 is generally set at 5mm to avoid air bubbles in the blue film 220 interfering with the airtightness test. Furthermore, due to the large single-sided gap, the protective film 100 is prone to leaving residual adhesive in the area of ​​the single-sided gap of the blue film 220.

[0049] In some embodiments, such as Figures 4 to 5 As shown, a blue film 220 is provided on the outer side of the housing 210, and the base part 1 is connected to the blue film 220 through the connecting part 2. Since the base part 1 is connected to the blue film 220 through the connecting part 2, and the protective film 100 is attached to the side of the blue film 220 away from the housing 210, the base part 1 has a large area and can suppress the air bubbles in the blue film 220. When the test head of the test equipment is connected to the insertion hole 211, the test head can press all the air bubbles in the blue film 220 into its interior, thereby ensuring the stability of the airtightness test.

[0050] Furthermore, such as Figure 5 As shown, the blue film 220 has a second opening 221 that matches the shape of the insertion hole 211. The second opening 221 communicates with the insertion hole 211, and there is a one-sided gap L between the second opening 221 and the insertion hole 211. The one-sided gap L is less than or equal to 0.25 mm. Since the substrate 1 can suppress air bubbles in the blue film 220, the one-sided gap of the blue film 220 can be reduced to 0.25 mm. In this way, the appearance of the housing 210 is better protected from the insertion and removal test without affecting the adhesion of the protective film 100, and the problem of residual adhesive is also solved. During the insertion and removal test of the insertion hole 211, the test head of the test equipment passes through the first opening 11, the second opening 221 and the insertion hole 211 in sequence, and then is inserted into the receiving cavity.

[0051] In some embodiments, the blue film 220 has a first projected area on the housing 210, and the connecting portion 2 has a second projected area on the housing 210, the second projected area being smaller than the first projected area. It should be noted that the second projected area can be 95%-99% of the first projected area; for example, the second projected area can be set to 96%, 97%, 98%, 99%, etc., of the first projected area. Since the base portion 1 of the protective film 100 has a large area, and the base portion 1 is connected to the housing 210 via the connecting portion 2, the bonding area of ​​the connecting portion 2 is large, resulting in strong adhesion of the protective film 100. Because the second projected area of ​​the connecting portion 2 is smaller than the first projected area of ​​the blue film 220, excess adhesive or residual adhesive can be avoided on the outside of the housing 210.

[0052] In some embodiments, such as Figure 6 As shown, the circumference of the first opening 11 is smaller than the circumference of the insertion hole 211. Generally, the housing 210 is provided with a metal ring at the insertion hole 211. Since the circumference of the first opening 11 is smaller than the circumference of the insertion hole 211, during testing, the edge portion of the base portion 1 at the first opening 11 is pushed by the test head and covers the metal ring of the insertion hole 211, preventing the metal ring from becoming worn and causing poor appearance during testing. Figure 7 As shown, the base portion 1 has multiple cuts 12 at the first opening 11, and the multiple cuts 12 are spaced apart around the first opening 11 in the circumferential direction. By providing multiple cuts 12, the base portion 1 will not wrinkle due to the insertion and removal of the test head, avoiding the test head being stuck and difficult to remove, and also preventing the protective film 100 from being lifted by the test head and causing the housing 210 to lose protection.

[0053] In some embodiments, such as Figure 10 As shown, the protective film 100 also includes a plurality of inward folds 3, which are connected to the edge of the cutout 12. When the test head passes through the first opening 11, the inward folds 3 are pushed by the test head and folded against the inner wall of the insertion hole 211, and abut against the wall of the metal ring at the insertion hole 211, thereby preventing the test head from wearing down the housing 210 and the metal ring at the insertion hole 211.

[0054] Furthermore, such as Figure 10 As shown, the first opening 11 is waist-shaped, formed by an arc segment 111 and a straight segment 112. The cut 12 is located at the connection between the arc segment 111 and the straight segment 112; and / or, the cut 12 is located on the arc segment. Since the connection between the arc segment 111 and the straight segment 112 experiences greater stress during insertion and removal testing, placing the cut 12 at the connection between the arc segment 111 and the straight segment 112 can prevent the protective film 100 from being lifted by the test head, thus preventing the housing 210 from losing its protection. Similarly, placing part of the cut 12 on the arc segment can also prevent the protective film 100 from being lifted by the test head.

[0055] In some embodiments, such as Figure 8 and Figure 9 As shown, the thickness T of the base portion 1 is set to 0.15mm-0.25mm. Tests have shown that when the thickness of the base portion 1 is less than 0.15mm, inserting or removing the test head will cause damage to the protective film 100, scratching the appearance of the housing 210 at the insertion hole 211, resulting in the entire machine being scrapped. Therefore, the thickness of the base portion 1 is set to 0.15mm-0.25mm. It is understandable that the thickness of the base portion 1 cannot be set too thick, otherwise it will lead to increased costs; the thickness of the base portion 1 cannot be set too thin either, otherwise it will cause damage to the protective film 100. Optionally, the thickness of the base portion 1 can be set to 0.175mm, 0.18mm, 0.2mm, 0.22mm, etc.

[0056] In some embodiments, such as Figure 3 As shown, the protective film 100 also includes a tear handle 4, which is disposed at the edge of the substrate portion 1. Figure 2 As shown, the tear handle 4 can be designed on the side near the ventilation hole 213. When inspecting the appearance, simply tear it in half from the tear handle, inspect it, and then reattach it.

[0057] In some embodiments, such as Figure 2 As shown, the base part 1 is also provided with a third opening 13 communicating with the horn hole 212 and a fourth opening 14 communicating with the vent hole 213.

[0058] like Figure 1 As shown, this application also provides an electrical appliance 200, including a housing 210 and a protective film 100 as described above. The housing 210 is provided with a plug hole 211, a flare hole 212, and a vent hole 213. Since the protective film 100 includes a base portion 1 and a connecting portion 2, the base portion 1 covers the plug hole 211, and the base portion 1 covers at least one of the flare hole 212 and the vent hole 213. Therefore, it naturally has the technical effects of the above-described protective film 100 embodiment, which will not be elaborated here.

[0059] Appliance 200 can be a wireless Bluetooth headset charging case, and housing 210 is the body of the wireless Bluetooth headset charging case; appliance 200 can also be a mobile phone, and housing 210 is the housing of the mobile phone.

[0060] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a specific order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0061] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0062] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A protective film (100) for protecting an electrical appliance (200), the electrical appliance (200) comprising a housing (210) having a plug-in hole (211), a horn hole (212), and a vent hole (213), characterized in that, The protective film (100) includes: A base portion (1) is disposed on the outside of the housing (210). The base portion (1) covers the insertion hole (211) and covers at least one of the horn hole (212) and the vent hole (213). The base portion (1) is provided with a first opening (11) that matches the shape of the insertion hole (211). The first opening (11) communicates with the insertion hole (211). A connecting part (2) is provided on the side of the base part (1) facing the housing (210), and the base part (1) is connected to the outside of the housing (210) through the connecting part (2).

2. The protective film according to claim 1, characterized in that, A blue membrane (220) is provided on the outer side of the housing (210), and the base part (1) is connected to the blue membrane (220) through the connecting part (2).

3. The protective film according to claim 2, characterized in that, The blue membrane (220) is provided with a second opening (221) communicating with the insertion hole (211), and there is a one-sided gap between the second opening (221) and the insertion hole (211), the one-sided gap being less than or equal to 0.25mm.

4. The protective film according to claim 2, characterized in that, The blue film (220) has a first orthographic projection area on the housing (210), and the connecting part (2) has a second orthographic projection area on the housing (210), the second orthographic projection area being smaller than the first orthographic projection area.

5. The protective film according to claim 1, characterized in that, The circumference of the first opening (11) is smaller than the circumference of the insertion hole (211). The base part (1) is provided with a plurality of cuts (12) at the first opening (11). The plurality of cuts (12) are spaced apart around the circumferential direction of the first opening (11).

6. The protective film according to claim 5, characterized in that, The protective film (100) also includes a plurality of inward folds (3), which are connected to the edge of the cut (12).

7. The protective film according to claim 5, characterized in that, The first opening (11) is waist-shaped, formed by an arc segment (111) and a straight segment (112), and the cut (12) is located at the connection between the arc segment (111) and the straight segment (112); and / or, The cut (12) is provided on the arc segment (111).

8. The protective film according to claim 1, characterized in that, The thickness of the base portion (1) is set to 0.15mm-0.25mm.

9. The protective film according to claim 1, characterized in that, The protective film (100) also includes a tearing handle (4), which is disposed at the edge of the base portion (1).

10. An electrical appliance, characterized in that, It includes a housing (210) and a protective film (100) as described in any one of claims 1 to 9.

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