High-sealing anti-leakage BOX sound cavity

Abstract

The utility model discloses a high-sealing anti-leakage BOX sound cavity. The loudspeaker comprises a first shell and a second shell which are buckled with each other, a loudspeaker assembly is fixedly arranged between the first shell and the second shell, the loudspeaker assembly comprises magnetic steel and a base frame, the second shell is provided with a hollow part used for exposing the magnetic steel, the periphery of the hollow part extends towards the base frame and is provided with a first rib, and the first rib is provided with a second rib. The base frame is correspondingly provided with a second rib, and the first rib and the second rib are fused and jointed, so that the joint surface between the base frame and the second shell has no gap; the base frame and the second shell are welded through ultrasonic waves; the first rib is arranged on the second shell, the second rib is correspondingly arranged on the base frame, the first rib and the second rib are connected in a fusion mode, so that no gap exists on the joint face between the base frame and the second shell, the base frame and the second shell are welded through ultrasonic wave, ultrasonic wave energy is used for welding in the ultrasonic wave welding process, and additives such as glue do not need to be used.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a highly sealed and leak-proof BOX sound cavity. Background Art

[0002] BOX sound cavity refers to a technology that can effectively maximize the vibration space volume of speakers in a small space. It is widely used in portable mobile electronic products such as mobile phones and tablets. The BOX sound cavity mainly includes speakers and shells. The speaker is the core component of the BOX sound cavity and is responsible for converting electrical signals into sound signals. In conventional full-cavity BOX, the magnets in the speakers are usually exposed outside the shell to meet the stacking height of the whole machine. The exposed periphery of the magnets needs to be sealed to prevent leakage from the rear cavity.

[0003] At present, sealants are usually used for sealing. During the sealing process, if the operation is improper or the control is inaccurate, excessive glue may be applied, exceeding the expected thickness or height, forming an uneven or too high glue layer, which not only wastes materials but also may affect the appearance and performance of the product. Utility Model Content

[0004] In view of the problems existing in the above-mentioned prior art, the utility model provides a highly sealed and leak-proof BOX sound cavity, which can effectively solve the problems existing in the above-mentioned prior art.

[0005] The technical solution of the utility model is:

[0006] According to one aspect of the utility model, it includes: a first shell and a second shell that are interlocked, a speaker assembly is fixed between the first shell and the second shell, the speaker assembly includes a magnet and a base, the second shell is provided with a hollow portion for exposing the magnet, a first rib is extended around the hollow portion toward the base, the base is correspondingly provided with a second rib, the first rib is fused with the second rib, so that there is no gap on the joint surface between the base and the second shell.

[0007] Furthermore, the base frame and the second shell are welded by ultrasonic welding.

[0008] Furthermore, two sides of the first rib gradually shrink toward the base frame, and a cross-section of the first rib is triangular.

[0009] Furthermore, at least one boss is fixedly disposed on the inner side wall of the first shell, and one end of the base frame away from the magnetic steel is fixedly disposed on the boss.

[0010] Furthermore, the number of the bosses is two, and the two bosses are symmetrically arranged on the inner wall of the first shell.

[0011] Furthermore, the base frame is glued to the boss.

[0012] By adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0013] Firstly, by arranging the first rib on the second shell, the base frame is correspondingly provided with the second rib, and the first rib and the second rib are melt-bonded, so that there is no gap in the joint surface between the base frame and the second shell, and the base frame and the second shell are welded by ultrasonic welding. Ultrasonic welding uses ultrasonic energy for welding, and no additives such as glue are required, so it can reduce environmental pollution. Compared with glue sealing, ultrasonic welding does not require additional glue drying or curing process, thereby saving electricity and energy consumption, and avoiding excessive application of glue, which exceeds the expected thickness or height. Ultrasonic welding can achieve seamless welding, reduce the welding interface, and improve the sealing.

[0014] Secondly, the two sides of the first rib gradually shrink toward the base frame, and the cross-section of the first rib is triangular. The top point of the first rib can limit its initial contact area with the second rib to a very small area, so that the ultrasonic energy can act more concentratedly on this point. This energy concentration is conducive to the melting of plastic during welding and improves welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 The explosion structure of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 3 The explosion structure of the utility model is shown in FIG. Figure 2 ;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] In the figure: a first shell 1, a boss 11, a second shell 2, a hollow portion 21, a first rib 22, a speaker assembly 3, a base frame 31, a second rib 32, and a magnet 33. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is particularly noted that the following embodiments are only used to illustrate the present invention, but do not limit the scope of the present invention. Similarly, the following embodiments are only partial embodiments of the present invention rather than all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figures 1 to 4 As shown, this solution provides a highly sealed and leak-proof BOX sound cavity.

[0023] See also Figures 1 to 4 , comprising: a first shell 1 and a second shell 2 that are interlocked, a speaker assembly 3 is fixed between the first shell 1 and the second shell 2, the speaker assembly 3 includes a magnetic steel 33 and a base frame 31, the second shell 2 is provided with a hollow portion 21 for exposing the magnetic steel 33, a first rib 22 is provided around the hollow portion 21 extending toward the base frame 31, the base frame 31 is correspondingly provided with a second rib 32, the first rib 22 and the second rib 32 are melt-bonded, so that there is no gap on the joint surface between the base frame 31 and the second shell 2. Preferably, the base frame 31 and the second shell 2 are welded by ultrasonic welding.

[0024] See also Figure 3 and Figure 4 The two sides of the first rib 22 gradually shrink toward the base frame 31, and the cross-section of the first rib 22 is triangular. The top point of the first rib 22 can limit its initial contact area with the second rib 32 to a very small area, so that the ultrasonic energy can act more concentratedly on this point. This energy concentration is conducive to the melting of plastic during the welding process and improves the welding efficiency.

[0025] See also Figure 2 and Figure 4 At least one boss 11 is fixedly disposed on the inner side wall of the first housing 1, and one end of the base frame 31 away from the magnetic steel 33 is fixedly disposed on the boss 11. There are two bosses 11, which are symmetrically disposed on the inner side wall of the first housing 1, so as to increase the contact area between the base frame 31 and the boss 11 and improve the stability of the base frame 31 installed on the first housing 1. The base frame 31 is glued to the boss 11.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A highly sealed and leak-proof BOX sound cavity, comprising: A first shell (1) and a second shell (2) are interlocked, a speaker assembly (3) is fixed between the first shell (1) and the second shell (2), the speaker assembly (3) comprises a magnetic steel (33) and a base frame (31), the second shell (2) is provided with a hollow portion (21) for exposing the magnetic steel (33), characterized in that a first rib (22) is provided around the hollow portion (21) and extends toward the base frame (31), the base frame (31) is correspondingly provided with a second rib (32), the first rib (22) and the second rib (32) are fused and joined, so that there is no gap on the joint surface between the base frame (31) and the second shell (2).

2. A highly sealed and leakproof BOX sound cavity as claimed in claim 1, characterized in that: The base frame (31) and the second shell (2) are welded by ultrasonic welding.

3. A highly sealed and leakproof BOX sound cavity as claimed in claim 1, characterized in that: Both sides of the first rib (22) gradually shrink towards the base frame (31), and the cross-section of the first rib (22) is triangular.

4. A highly sealed and leakproof BOX sound cavity as claimed in claim 1, characterized in that: At least one boss (11) is fixedly provided on the inner side wall of the first shell (1), and one end of the base frame (31) away from the magnetic steel (33) is fixedly provided on the boss (11).

5. A highly sealed and leakproof BOX sound cavity as claimed in claim 4, characterized in that: The number of the bosses (11) is two, and the two bosses (11) are symmetrically arranged on the inner side wall of the first shell (1).

6. A highly sealed and leakproof BOX sound cavity as claimed in claim 4 or 5, characterized in that: The base frame (31) is glued to the boss (11).

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