Middle frame assembly and electronic equipment

Abstract

The utility model discloses a middle frame assembly and electronic equipment, the middle frame assembly comprises a middle frame and a protection layer, the inner side wall of the middle frame is provided with a containing groove, the groove bottom of the containing groove is provided with a weight reducing groove, the protection layer is fixed in the containing groove, the side, away from the groove bottom of the containing groove, of the protection layer is flush with a groove opening of the containing groove, and the groove opening of the containing groove is blocked. The protective layer is used for being attached to the battery. The accommodating groove is formed in the side wall of the middle frame, and the protective layer is fixed in the accommodating groove, so that the protective layer can be prevented from occupying the mounting space of the battery, the size of the battery can be further increased, and the capacity of the battery is improved.

Description

Technical Field

[0001] This disclosure relates to the field of electronic device technology, and in particular to a mid-frame assembly and an electronic device. Background Technology

[0002] With the development of mobile phones and other electronic devices, people have increasingly higher demands for thinner and lighter electronic devices.

[0003] In related technologies, the mid-frame assembly of electronic devices includes a mid-frame and a battery fixed within it. The sidewall of the mid-frame that contacts the battery often has a significant thickness. To reduce the weight of the electronic device, weight-reduction grooves are often cut into the inner sidewall of the mid-frame where the battery contacts the battery. However, if the battery directly contacts the inner sidewall of the mid-frame after the weight-reduction groove is cut, the groove opening will come into contact with the battery. In the event of a collision, the weight-reduction groove will exert a shearing force on the battery, potentially causing damage. Therefore, a protective layer (such as Mylar tape) needs to be adhered to the inner sidewall of the mid-frame to ensure a flat contact surface between the battery and the mid-frame, thus eliminating potential safety hazards.

[0004] In the above structure, the protective layer has a certain thickness, which occupies the battery installation space, thus limiting the battery size and consequently limiting the battery capacity. Utility Model Content

[0005] This disclosure provides a mid-frame component and an electronic device, which can solve the aforementioned technical problems existing in related technologies. The technical solution is as follows:

[0006] In a first aspect, a mid-frame assembly is provided, the mid-frame assembly including a mid-frame and a protective layer;

[0007] The inner sidewall of the middle frame has a receiving groove, and the bottom of the receiving groove has a weight reduction groove;

[0008] The protective layer is fixed inside the receiving groove. The side of the protective layer away from the bottom of the receiving groove is flush with the opening of the receiving groove and forms a seal on the opening of the receiving groove. The protective layer is used to adhere to the battery.

[0009] In one possible implementation, the depth of the receiving groove is a, where 0.05 mm ≤ a ≤ 0.15 mm.

[0010] In one possible implementation, the distance between the bottom of the weight-reducing groove and the outer wall of the middle frame is b, where b ≥ 1.5 mm.

[0011] In one possible implementation, the width of the receiving groove is c, and the dimension of the weight-reducing groove in the width direction of the receiving groove is d, where 0.5mm≤cd≤2mm.

[0012] In one possible implementation, the two walls of the weight-reducing groove in the length direction are arc-shaped, and the distance between the two walls decreases as the depth increases.

[0013] In one possible implementation, the bottom of the receiving tank has a plurality of weight-reducing grooves, which are spaced apart along the length of the receiving tank.

[0014] In one possible implementation, the distance between two adjacent weight-reducing slots in the plurality of weight-reducing slots is e, where 0.5mm ≤ e ≤ 2mm.

[0015] In one possible implementation, the plurality of weight-reducing grooves have different dimensions along the length of the receiving groove.

[0016] In one possible implementation, the sidewall of the middle frame has a functional opening, and there are reinforcing ribs between the plurality of weight-reducing grooves, with at least a portion of the functional opening located between the reinforcing ribs and the outer sidewall of the middle frame.

[0017] In a second aspect, an electronic device is provided, the electronic device including the mid-frame assembly described in the first aspect, wherein the battery is fixed within the mid-frame and is attached to the protective layer.

[0018] The beneficial effects of the technical solution provided in this disclosure include at least the following:

[0019] By using the technical solution provided in this disclosure, a receiving groove is opened in the side wall of the middle frame, and the protective layer is fixed in the receiving groove, thereby reducing the space occupied by the battery installation and increasing the size of the battery to improve its capacity.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an exploded view of a mid-frame assembly provided in an embodiment of this disclosure;

[0023] Figure 2 This is a partial cross-sectional schematic diagram of a mid-frame component provided in an embodiment of this disclosure;

[0024] Figure 3 This is a schematic diagram of the structure of a mid-frame component provided in an embodiment of this disclosure.

[0025] Figure label:

[0026] 1. Middle frame;

[0027] 11. Receiving groove; 12. Weight reduction groove; 13. Functional opening; 14. Reinforcing rib;

[0028] 1a. First mounting plate; 1b. Second mounting plate;

[0029] 2. Protective layer. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other. This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] In related technologies, the mid-frame assembly of electronic devices includes a mid-frame and a battery fixed within the mid-frame. The sidewall of the mid-frame that contacts the battery often has a significant thickness. To reduce the weight of the electronic device, weight-reduction grooves are often cut into the inner sidewall of the mid-frame where the battery contacts the battery. However, if the battery directly contacts the inner sidewall of the mid-frame after the weight-reduction groove is cut, the groove opening will come into contact with the battery. In the event of a collision, the weight-reduction groove will exert a shearing force on the battery, potentially causing damage. Therefore, a protective layer needs to be adhered to the inner sidewall of the mid-frame to ensure a flat contact surface between the battery and the mid-frame, thus eliminating potential safety hazards.

[0033] The wall thickness of the mid-frame is uniform in all locations. In order to accommodate the structural requirements of installing certain components (such as volume buttons) in certain locations on the mid-frame, the overall wall thickness of the mid-frame is relatively thick. This limits the installation space of the battery. The protective layer fixed on the inner side wall of the mid-frame further limits the installation space of the battery, resulting in a limitation on the size of the battery, and consequently a limitation on the capacity of the battery.

[0034] To address the problems in related technologies, this disclosure provides a mid-frame component, please refer to... Figure 1 The middle frame assembly includes a middle frame 1 and a protective layer 2. The inner sidewall of the middle frame 1 has a receiving groove 11, and the bottom of the receiving groove 11 has a weight-reducing groove 12. Further details can be found in the following references. Figure 3 The protective layer 2 is fixed inside the receiving groove 11. The side of the protective layer 2 away from the bottom of the receiving groove 11 is flush with the opening of the receiving groove 11 and forms a seal on the opening of the receiving groove 11. The protective layer 2 is used to adhere to the battery.

[0035] By creating a weight-reducing groove 12 on the inner sidewall of the middle frame 1, the weight of the middle frame 1 can be effectively reduced, thereby effectively reducing the weight of the middle frame assembly and achieving the goal of weight reduction. Furthermore, the protective layer 2 can seal the openings of the weight-reducing groove 12 and the receiving groove 11, thereby ensuring that the contact surface between the middle frame assembly and the battery is a plane, thus guaranteeing the safety performance of the battery.

[0036] Furthermore, by creating a receiving groove 11 in the side wall of the middle frame 1 and fixing the protective layer 2 within the receiving groove 11, the protective layer 2 can be prevented from occupying the battery installation space, thereby increasing the battery size and capacity. Moreover, since the receiving groove 11 is only used to accommodate the protective layer 2, its depth is typically very small, and its impact on the structural strength of the side wall of the middle frame 1 is minimal. In other words, using the middle frame assembly provided in this embodiment can reduce the battery space required by the protective layer 2 without sacrificing the strength of the middle frame 1.

[0037] Optionally, the two sidewalls of the middle frame 1 adjacent to the battery each have a receiving groove 11 and a weight reduction groove 12.

[0038] This disclosure does not limit the material and molding method of the middle frame 1. Optionally, the middle frame 1 is made of metal and is formed by CNC (Computer Numerical Control) technology. Optionally, the middle frame 1 is made of plastic and is formed by injection molding.

[0039] The material of the protective layer 2 is not limited in this embodiment. Optionally, the protective layer 2 is Mylar tape, which is directly adhered and fixed to the bottom of the receiving groove 11 and seals the opening of the receiving groove 11.

[0040] The statement in this disclosure that "the side of the protective layer 2 away from the bottom of the receiving groove 11 is flush with the opening of the receiving groove 11" is an ideal scenario. During manufacturing, due to tolerances, the depth of the receiving groove 11 may be slightly larger or smaller. This could cause the side of the protective layer 2 away from the bottom of the receiving groove 11 to be slightly lower or slightly higher than the opening of the receiving groove 11. However, since the thickness of the protective layer 2 and the depth of the receiving groove 11 are relatively small, it will not affect the safety of the battery and should be considered a solution protected by this disclosure.

[0041] The mid-frame component provided in the embodiments of this disclosure will be described in detail below with reference to some examples.

[0042] In some examples, please refer to Figure 1The middle frame 1 also includes a first mounting plate 1a and a second mounting plate 1b spaced apart. The first mounting plate 1a is located between the two side walls of the middle frame 1 and is connected to both side walls. The second mounting plate 1b is located between the two side walls of the middle frame 1 and is connected to both side walls. The first mounting plate 1a, the second mounting plate 1b and the two side walls of the middle frame 1 enclose a battery mounting space.

[0043] The first mounting plate 1a is used to connect to the main circuit board, and the second mounting plate 1b is used to connect to the sub-circuit board, meaning the main circuit board and the sub-circuit board are located on opposite sides of the battery. The receiving slot 11 is located on the side wall of the middle frame 1 between the first mounting plate 1a and the second mounting plate 1b.

[0044] In some examples, please refer to Figure 2 The depth of the receiving groove 11 is a, where 0.05mm≤a≤0.15mm.

[0045] If a < 0.05 mm, the thickness of the protective layer 2 is too small, making it difficult to guarantee the flatness of the contact surface between the middle frame assembly and the battery; if a > 0.15 mm, the depth of the receiving groove 11 is too large, which will reduce the structural strength of the middle frame 1. Ensuring that 0.05 mm ≤ a ≤ 0.15 mm guarantees that the flatness of the contact surface between the middle frame assembly and the battery is maintained while ensuring that the structural strength of the middle frame 1 is not affected.

[0046] Optionally, a = 0.1 mm.

[0047] In some examples, please refer to Figure 1 and Figure 2 The distance between the bottom of the weight-reducing groove 12 and the outer wall of the middle frame 1 is b, where b ≥ 1.5 mm.

[0048] For example, please refer to Figure 1 and Figure 3 The side wall thickness of the middle frame 1 is 5.56mm, the depth a of the receiving groove 11 is 0.1mm, the distance b between the bottom of the weight reduction groove 12 and the outer side wall of the middle frame 1 is 3.16mm, and the maximum depth of the weight reduction groove 12 is 2.3mm.

[0049] If b < 1.5 mm, the distance between the bottom of the weight-reducing groove 12 and the outer wall of the middle frame 1 is too small, which will significantly reduce the structural strength of the middle frame 1. Making b ≥ 1.5 mm allows the middle frame 1 to achieve weight reduction through the weight-reducing groove 12 while ensuring that the middle frame 1 has a certain structural strength.

[0050] In some examples, please refer to Figure 1 The width of the receiving groove 11 is c, and the dimension of the weight reduction groove 12 in the width direction of the receiving groove 11 is d, 0.5mm≤cd≤2mm.

[0051] If cd < 0.5 mm, the dimension of the weight-reducing groove 12 in the width direction of the receiving groove 11 is too large, which will significantly reduce the structural strength of the middle frame 1; if cd > 2 mm, the dimension of the weight-reducing groove 12 in the width direction of the receiving groove 11 is too small, which will reduce the weight-reducing effect of the weight-reducing groove 12. Ensuring that 0.5 mm ≤ cd ≤ 2 mm guarantees the weight-reducing effect of the weight-reducing groove 12 while maintaining the structural strength of the middle frame 1.

[0052] Optionally, the value of cd can be 1mm or 1.5mm.

[0053] Optionally, in the width direction of the receiving groove 11, the weight reduction groove 12 is located in the middle of the receiving groove 11.

[0054] In some examples, please refer to Figure 1 The two walls of the weight reduction groove 12 in the length direction are arc-shaped, and the distance between the two walls decreases as the depth increases.

[0055] In this way, the thickness of the side wall of the middle frame 1 gradually decreases from the opening of the weight reduction groove 12 to the bottom of the groove. Compared with the method of perpendicular side wall to the bottom of the groove, it can effectively prevent the side wall of the middle frame 1 from having obvious stress concentration at the opening of the groove, and thus effectively prevent the middle frame 1 from deforming during use.

[0056] Furthermore, when the forming process of the middle frame 1 is CNC machining, this setup also makes it easier to carve grooves on the side walls of the middle frame 1, thereby improving the production efficiency of the middle frame 1. For example, the weight-reducing groove 12 can be machined using a T-shaped tool. The tool is circular, and the weight-reducing groove 12 is carved out by rotating and cutting.

[0057] In some examples, please refer to Figure 1 The bottom of the receiving tank 11 has multiple weight-reducing tanks 12, which are arranged at intervals along the length of the receiving tank 11.

[0058] In this way, by setting multiple weight-reducing grooves 12 at the bottom of the receiving groove 11, and by spacing between the multiple weight-reducing grooves 12, the structural strength of the middle frame 1 can be guaranteed through the spacing between the multiple weight-reducing grooves 12. That is, compared with setting a large weight-reducing groove 12 at the bottom of the receiving groove 11, the structural strength of the middle frame 1 can be effectively guaranteed; compared with setting a small weight-reducing groove 12 at the bottom of the receiving groove 11, the weight reduction effect of the middle frame component can be effectively improved.

[0059] For further details, please refer to Figure 1 and Figure 2The distance between two adjacent weight reduction grooves 12 in the plurality of weight reduction grooves 12 is e, 0.5mm≤e≤2mm.

[0060] If e < 0.5 mm, the distance between two adjacent weight-reducing grooves 12 is too small, which will significantly reduce the structural strength of the middle frame 1; if e > 2 mm, the distance between two adjacent weight-reducing grooves 12 is too large, resulting in the weight-reducing grooves 12 being too small, thus reducing their weight-reducing effect. Ensuring that 0.5 mm ≤ e ≤ 2 mm allows for weight reduction of the middle frame 1 through the weight-reducing grooves 12 while maintaining a certain structural strength.

[0061] When the bottom of the receiving tank 11 has three or more weight-reducing tanks 12, the distance between the first weight-reducing tank 12 and the second weight-reducing tank 12 and the distance between the second weight-reducing tank 12 and the third weight-reducing tank 12 can take different values, and the distance between other weight-reducing tanks 12 can be deduced in the same way.

[0062] Furthermore, the multiple weight-reducing grooves 12 have different dimensions along the length of the receiving groove 11.

[0063] In this way, the dimensions of each weight-reducing groove 12 can be designed according to the structural strength requirements of the side wall of the middle frame 1. For example, in areas with lower structural strength, the dimension of the weight-reducing groove 12 in the length direction of the receiving groove 11 can be set to a smaller value to ensure the structural strength of the side wall of the middle frame 1; in areas with higher structural strength, the dimension of the weight-reducing groove 12 in the length direction of the receiving groove 11 can be set to a larger value to improve the weight-reducing effect of the weight-reducing groove 12.

[0064] In some examples, please refer to Figure 1 and Figure 3 The side wall of the middle frame 1 has a functional opening 13, and there are reinforcing ribs 14 between the multiple weight-reducing grooves 12. At least a portion of the functional opening 13 is located between the reinforcing ribs 14 and the outer side wall of the middle frame 1.

[0065] Specifically, at the functional opening 13, the thickness of the side wall of the middle frame 1 is reduced, so that at least part of the functional opening 13 is located between the reinforcing rib 14 and the outer side wall of the middle frame 1, which can effectively increase the thickness of the side wall of the middle frame 1 at the functional opening 13, thereby improving the structural strength of the middle frame 1.

[0066] Optionally, the functional opening 13 can be a signal hole, which is used to allow electromagnetic waves to pass through.

[0067] Based on the same concept, this disclosure also provides an electronic device, which includes the aforementioned mid-frame assembly, with the battery fixed inside the mid-frame 1 and attached to the protective layer 2.

[0068] The electronic devices involved in this disclosure may also be referred to as terminals, mobile terminals, terminal devices, user equipment (UE), etc. For example, a terminal device may be a smartphone, tablet computer, etc. It should be understood that this disclosure does not specifically limit the specific technology or device form adopted by the terminal device. In the description of the above embodiments, a mobile phone is used as an example, but this disclosure is not limited thereto.

[0069] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0070] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0071] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0072] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0073] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0074] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A mid-frame component, characterized in that, The middle frame assembly includes a middle frame (1) and a protective layer (2); The inner sidewall of the middle frame (1) has a receiving groove (11), and the bottom of the receiving groove (11) has a weight reduction groove (12). The protective layer (2) is fixed inside the receiving groove (11). The side of the protective layer (2) away from the bottom of the receiving groove (11) is flush with the opening of the receiving groove (11) and forms a seal on the opening of the receiving groove (11). The protective layer (2) is used to be in contact with the battery.

2. The mid-frame assembly according to claim 1, characterized in that, The depth of the receiving groove (11) is a, 0.05mm≤a≤0.15mm.

3. The mid-frame assembly according to claim 1, characterized in that, The distance between the bottom of the weight-reducing groove (12) and the outer wall of the middle frame (1) is b, where b ≥ 1.5 mm.

4. The mid-frame assembly according to claim 1, characterized in that, The width of the receiving groove (11) is c, and the dimension of the weight reduction groove (12) in the width direction of the receiving groove (11) is d, 0.5mm≤cd≤2mm.

5. The mid-frame assembly according to claim 1, characterized in that, The two walls of the weight reduction groove (12) in the length direction are arc-shaped, and the distance between the two walls decreases as the depth increases.

6. The mid-frame assembly according to claim 1, characterized in that, The bottom of the receiving tank (11) has a plurality of weight-reducing grooves (12), which are spaced apart along the length of the receiving tank (11).

7. The mid-frame assembly according to claim 6, characterized in that, The distance between two adjacent weight-reducing grooves (12) in the plurality of weight-reducing grooves (12) is e, 0.5mm≤e≤2mm.

8. The mid-frame assembly according to claim 6, characterized in that, The multiple weight-reducing grooves (12) have different dimensions along the length of the receiving groove (11).

9. The mid-frame assembly according to claim 6, characterized in that, The sidewall of the middle frame (1) has a functional opening (13), and there is a reinforcing rib (14) between the plurality of weight-reducing grooves (12). At least a portion of the functional opening (13) is located between the reinforcing rib (14) and the outer sidewall of the middle frame (1).

10. An electronic device, characterized in that, The electronic device includes a battery and a mid-frame assembly according to any one of claims 1-9, wherein the battery is fixed inside the mid-frame (1) and is attached to the protective layer (2).

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